Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 44. Отображено 44.
09-06-2023 дата публикации

Conference cooperation tool processing system, method and device

Номер: CN116244010A
Автор: LI YAXIN, LIU CHENGFENG, LI KAI, YANG FAN, ZHANG CHEN, FU CHANGWEI, PAN ZIXUAN
Принадлежит:

The invention discloses a conference collaboration tool developing method, a publishing method, a registering method, a using method, an updating method, a sharing method, a processing method and a system. According to the development method, a collaborative tool development kit is obtained, and the development kit provides a collaborative tool application layer program interface; determining a target user; obtaining a webpage code of a collaboration tool of the target user written based on the application layer program interface; wherein the webpage code is used for a conference client to load a collaboration tool page through a webpage container, the collaboration tool page calls a collaboration tool local layer program interface through the application layer program interface, and the local layer program interface calls a conference layer program interface. And the collaborative tool content is shared between the conference clients through the conference server. By adopting the processing ...

Подробнее
Номер записи: 1
04-04-2023 дата публикации

Converter process alloy adding method based on dynamic adjustment of production conditions

Номер: CN115906628A
Автор: FU CHANGWEI, ZHANG PEI, WANG ZHONGXUE, LI SIJUN, HU BIN, NING WEI
Принадлежит:

The invention provides a converter process alloy adding method based on dynamic adjustment of production conditions, and belongs to the technical field of converter production in the ferrous metallurgy industry. The alloy adding method comprises the following steps: acquiring alloy detection data, and establishing an alloy database based on alloy components; collecting converter production data, and establishing a prediction model database; performing data cleaning on the acquired converter production data; establishing a prediction model of the yield of each element of the neural network; each element yield prediction model is trained; and according to alloy detection components, the alloy yield predicted by each element prediction model is combined, and the alloy addition amount is calculated. Through the prediction model based on the neural network, the problem of converter alloy addition according to operation experience in a production field is solved, the alloy use efficiency is improved ...

Подробнее
Номер записи: 2
26-03-2014 дата публикации

Hot-rolled J-type steel and application of hot-rolled J-type steel

Номер: CN103663284A
Автор: FU CHANGWEI, ZHAO XINHUA, YUAN PENGJU, JI JINLI, HUO XIWEI
Принадлежит:

The invention relates to hot-rolled J-type steel which comprises a web plate and wing plates. The wing plates include the first wing plate, the second wing plate and the third wing plate. The two ends of the web plate are connected with the first wing plate and the third wing plate respectively, the first wing plate and the third wing plate are located on the same side of the web plate, are mutually parallel and are perpendicular to the web plate, the second wing plate is connected with the first wing plate and connected with the end portion of the web plate, and the second wing plate and the first wing plate are located on the same vertical plane and also perpendicular to the web plate. The hot-rolled J-type steel is used for manufacturing forklift portals, in the hot-rolling production process, a groove is not required to be formed in a finish-rolling plain roller, the first wing plate and the second wing plate are located on the same vertical plane, and therefore the size, the position ...

Подробнее
Номер записи: 3
06-06-2023 дата публикации

Method for improving ferro-molybdenum recovery rate in converter process

Номер: CN116219103A
Автор: FU CHANGWEI, ZHANG PEI, WANG ZHONGXUE, HU BIN, NING WEI, LI SIJUN, HAO SHUAI, DU JINKE, LI PING
Принадлежит:

The invention belongs to the technical field of steel smelting, and particularly relates to a method for improving the recovery rate of ferromolybdenum in a converter process. According to the method for improving the recovery rate of the ferromolybdenum alloy in the converter procedure, alloying is carried out in the tapping process, bottom argon blowing is started for a steel ladle, the control mode that the argon flow is in a small-large-small mode is adopted, and when converter tapping reaches 1/2, ferromolybdenum alloy is added in batches. The method solves the problems of low molybdenum element recovery rate and large fluctuation of the ferro-molybdenum alloy in the converter process, not only can provide a basis for improvement and stability of subsequent product performance, but also can reduce alloy consumption in the converter process and reduce the alloy use cost.

Подробнее
Номер записи: 4
23-06-2023 дата публикации

Noise processing method and device for audio signal, frequency band division method and device for audio signal, and electronic equipment

Номер: CN116312593A
Автор: LIANG QIDONG, HU FEIYANG, LUO WEIRU, FU CHANGWEI, LI SONGLIN, DONG LINRONG, TENG LONGBIN, TANG XIAOJUN
Принадлежит:

The embodiment of the invention discloses a noise processing method and device of an audio signal, a frequency band division method and device, an audio noise reduction processing method and device of an online conference, a computer readable storage medium and electronic equipment. The method comprises the following steps: acquiring an audio signal generated in a real-time communication process, and extracting a frequency domain feature of the audio signal; according to the frequency domain characteristics, obtaining energy values correspondingly distributed in a plurality of preset frequency bands of the audio signal; determining a target frequency band from the plurality of preset frequency bands, wherein an energy value corresponding to the target frequency band is not lower than a preset energy value; and if the plurality of preset frequency bands include the target frequency band and the audio signal is determined to include noise according to the number of the target frequency bands ...

Подробнее
Номер записи: 5
08-04-2015 дата публикации

H-section steel

Номер: CN104499642A
Автор: FU CHANGWEI, YANG QIN, SONG ZHIGUO
Принадлежит:

The invention discloses an H-section steel. The H-section steel comprises a web, a top flange and a bottom flange; the web is located between the top flange and the bottom flange; the surface of each of the top flange and the bottom flange comprises an inner side surface and an outer side surface opposite to the inner side surface; the inner side surfaces of the top flange and the bottom flange both are connected with the web; lugs are arranged on the outer surface of the top flange and/or the outer surface of the bottom flange; a groove is formed in the outer side surface of the web; the outer side surface of the web is parallel to the length direction of the web. According to the H-section steel, the binding force between the H-section steel and the concrete is increased.

Подробнее
Номер записи: 6
18-06-2014 дата публикации

Low-temperature-resistant channel steel for forklift mast, and manufacturing method of channel steel

Номер: CN103866186A
Автор: FU CHANGWEI, WANG ZHONGXUE, ZHAO XINHUA, MA WEN, FANG JINLIN, PU HONGBING
Принадлежит:

The invention discloses a low-temperature-resistant channel steel for a forklift mast, and a manufacturing method of the channel steel. The low-temperature-resistant channel steel for the forklift mast comprises the following chemical components in percentage by weight: 0.12-0.18% of C, 0.20-0.40% of Si, 1.35-1.55% of Mn, no more than 0.030% of P, no more than 0.020% of S, 0,090-0.12% of V, 0.005-0.025% of Ti, and the balance of ferrum and trace impurities. The production of the low-temperature-resistant channel steel for the forklift mast can be realized through low-carbon content by applying aluminum deoxidizing and vanadium-titanium composite microalloying technology and combining controlled heating and after-rolled controlled cooling, the produced channel steel is good in mechanical performance, greater than 460MPa in yield strength, greater than 605MPa in tensile strength, and greater than 127J in minus 5DEG C longitudinal impact energy.

Подробнее
Номер записи: 7
27-06-2023 дата публикации

Screen projection processing method, screen projection information configuration method, storage medium and electronic equipment

Номер: CN116347141A
Автор: HU FEIYANG, FU CHANGWEI, TANG XIAOJUN, LUO WEIRU
Принадлежит:

The embodiment of the invention discloses a screen projection processing method and device, a screen projection information configuration method and device, a computer readable storage medium and electronic equipment. The method comprises the following steps: determining identification information of a target process corresponding to a target file to be subjected to screen projection from terminal equipment associated with a speaker; according to the identification information of the target process, when it is determined that application program processes running on the terminal equipment comprise the target process, an application program window associated with the target process is obtained; and when determining that the application window is a slide window, obtaining image data of the slide window, and sending the image data to a projection display screen. Thus, the single-screen projection function in the speaker mode can be realized, the compatibility problem and the delay problem ...

Подробнее
Номер записи: 8
20-04-2011 дата публикации

Hot-rolled H-shaped steel for low temperature-resisting structure and preparation method thereof

Номер: CN0102021475A
Автор: Zhang Jie, Yuan Pengju, Song Yuqing, Fu Changwei, Deng Cunshan, Li Chao
Принадлежит:

The invention relates to low temperature-resisting H-shaped steel and a preparation method thereof, wherein the steel comprises the following chemical components in percentage by weight: 0.12-0.22 percent of C, 0.10-0.40 percent of Si, 1.1-1.50 percent of Mn, not more than 0.025 percent of P, not more than 0.025 percent of S, 0.02-0.05 percent of Nb and the balance of iron and trace impurities. The preparation method of the low temperature-resisting H-shaped steel comprises the following steps of: desulfurizing, smelting by using a 120-ton top and bottom combined blown converter, refining by using an LF (Ladle Furnace), continuously casting shaped blanks and rolling large H-shaped steel, wherein after the refinement outside the furnace, the oxygen content in molten steel is not more than 10ppm, and in the continuously-casting process, the superheat degree is controlled to be 20-30 DEG C, the specifications of casting blanks are 555*440*90, 750*370*90 and 1024*390*90, the soaking temperature ...

Подробнее
Номер записи: 9
02-05-2023 дата публикации

Low-cost high-strength H-shaped steel and production method thereof

Номер: CN116043110A
Автор: FU CHANGWEI, WANG ZHONGXUE, ZHANG PEI, LI SIJUN, HU BIN, NING WEI, DU JINKE, ZOU CHUNFENG, LI PING, SHI HONGYAN
Принадлежит:

The invention provides low-cost high-strength H-shaped steel and a production method thereof, and belongs to the technical field of metallurgy. The low-cost high-strength H-shaped steel comprises the following elements in percentage by weight: 0.14 to 0.20 percent of C, 0.10 to 0.50 percent of Si, 1.2 to 1.40 percent of Mn, less than or equal to 0.025 percent of P, less than or equal to 0.025 percent of S, 0.015 to 0.035 percent of Nb, 0.010 to 0.030 percent of Ti, less than or equal to 0.006 percent of N, less than or equal to 0.015 percent of Als and the balance of iron and trace impurities. The production method mainly comprises the following steps: feeding a titanium wire in a refining process, wherein the titanium wire feeding position is above a bottom blowing port; controlling the wire feeding speed; controlling the bottom blowing flow during wire feeding; according to the chemical components and the production method of the low-cost high-strength H-shaped steel, the problems that ...

Подробнее
Номер записи: 10
23-12-2015 дата публикации

Blast furnace gas washing water dehydrogenation control system

Номер: CN0204904101U
Автор: FU CHANGWEI
Принадлежит:

The utility model discloses a blast furnace gas washing water dehydrogenation control system, the signal output part of its pH value sensor connect programmable logic controler's pH value feedback signal input, and the signal output part of oxido reduction potential sensor connects programmable logic controler's oxido reduction potential value feedback signal input, programmable logic controler's three frequency conversion control signal output part connects the frequency conversion control signal input part of corresponding first converter, second converter and third converter respectively, and the control signal output part of first converter connects the control end of hydrogen chloride dosing pump, and the control signal output part of second converter connects the control end of naoh dosing pump, and the control signal output part of third converter connects the control end of sodium hypochlorite dosing pump. The utility model discloses a to the long -range centralized monitoring of ...

Подробнее
Номер записи: 11
29-10-2014 дата публикации

Submersed nozzle for casting rectangular blank and arrangement mode thereof

Номер: CN104117666A
Автор: FU CHANGWEI
Принадлежит:

The invention discloses a submersed nozzle for casting a rectangular blank and an arrangement mode of the submersed nozzle. The submersed nozzle comprises a ring-shaped side wall with a hollow inner cavity, a first round opening is formed in the upper end face of the side wall, a second cross-shaped opening is formed in the lower end face of the side wall, the circle center of the first opening and the enter of the second opening are both arranged on the axis of the side wall, and the area of the first opening is equal to that of the second opening. The hollow inner cavity is formed by correspondingly extending the edge of the first opening to the edge of the second opening in the direction of a quasi bus in a communicated mode. According to the scheme, a stable and even flow field can be formed in a crystallizer, the heat center of molten steel and the section of the crystallizer are heightened, the temperature and ingredient uniformity in the cross direction are especially improved, floating ...

Подробнее
Номер записи: 12
27-03-2018 дата публикации

High -speed packagine machine novel briquetting of facing slip conveying system and backplate

Номер: CN0207141604U
Автор: FU CHANGWEI, LI MENGYIN, GUO YUYUAN, WANG JIGUI
Принадлежит: HONGTA TOBACCO GROUP CO LTD, HONGTA TOBACCO (GROUP) CO., LTD.

The utility model relates to a high -speed packagine machine novel briquetting of facing slip conveying system and backplate, it is including the area of induced drafting, briquetting and facing slip,the facing slip is attached to be set up in the area of induced drafting, the briquetting is attached to be set up in the facing slip side surface, the cross -section of briquetting is a right trapezoid and has a hypotenuse, and this hypotenuse is the opening inclined plane, and this opening inclined plane is formed with a contained angle with the facing slip side surface, the thickness of briquetting, this right trapezoid's height is 3mm promptly. Novel briquetting and backplate can protect after the smooth transport of facing slip to the briquetting that spouts jiao zui and the protection rubberizing that the facing slip is smooth accomplishes vertical the transport and cross feed to the backplate that joins with the tobacco bale.

Подробнее
Номер записи: 13
08-12-2010 дата публикации

Packed column and vapor phase chromatograph, preparation and analysis method for mellow wine

Номер: CN0101314125B
Автор: FU CHANGWEI, CHANGWEI FU
Принадлежит:

The invention provides a packed column, comprising a hollow tube body and immobile phases which are distributed in the tube body, wherein, the immobile phases are immobile phases formed by metal salts of fatty acid and non-polarity high-molecular porous microsphere inert carriers. The invention adopts the packed column provided with the immobile phases which are formed by the metal salts of the fatty acid and the non-polarity high-molecular porous microsphere inert carriers to replace a capillary column in the prior art, the capillary column is used to quantitatively analyze the content of trace small-molecular alcohol impurities in a battery solution or in an organic substance for preparing the battery solution, thus the packed column not only greatly reduces the analysis cost, but also improves the precision of quantitative analysis, thereby further contributing to ensuring the battery quality.

Подробнее
Номер записи: 14
05-06-2020 дата публикации

Converter sampling device capable of preventing arms from being burnt

Номер: CN0210683835U
Автор: DU JINKE, YAN QING, LI SIJUN, HU BIN, FU CHANGWEI, LI PING, SHI HONGYAN, ZOU CHUNFENG
Принадлежит: SHANDONG IRON & STEEL CO LTD, SHANDONG IRON AND STEEL COMPANY LTD.

The utility model relates to a converter sampling device capable of preventing arms from being burnt and scalded. The sampling device comprises a sampling rod inserted from a sampling opening in a furnace mouth door, wherein the upper shielding door is located in the furnace mouth door and slides into the sampling opening from the upper portion, the lower shielding door slides into the sampling opening from the lower portion, the driving device drives the upper shielding door and the lower shielding door to slide, and the top end of the lower shielding door is provided with a penetrating holewhich allows the sampling rod to penetrate through and inclines downwards to face the furnace mouth. Through the arrangement of the upper shielding door, the lower shielding door and the driving device, the sampling opening is shielded, splashed steel slag or leaked furnace fire is shielded, and arms of a person are protected from being scalded; a guide plate is arranged, so that the sampling rodcan ...

Подробнее
Номер записи: 15
22-08-2023 дата публикации

Transmission connection construction method and system

Номер: CN116633908A
Автор: FU CHANGWEI, YANG FAN, HU FEIYANG, LIANG QIDONG, LUO WEIRU, LI SONGLIN, ZHANG TINGTING, YU XIAO, TANG XIAOJUN, TENG LONGBIN
Принадлежит:

The embodiment of the invention provides a transmission connection construction method and device, and the method comprises the steps: submitting a service obtaining request to a conference server; establishing communication connection with the conference server according to service information fed back by the conference server for the service acquisition request; and in response to a device connection request sent by a client, establishing a transmission connection between the conference device and the client.

Подробнее
Номер записи: 16
06-06-2023 дата публикации

Wire feeder guide pipe capable of guaranteeing advancing and retreating of core-spun yarn and using method of wire feeder guide pipe

Номер: CN116219112A
Автор: ZOU CHUNFENG, HAN LEILEI, LI SIJUN, HAO SHUAI, FU CHANGWEI, LI PING, SHI HONGYAN, DU JINKE, HU BIN
Принадлежит:

The invention relates to the technical field of ferrous metallurgy steelmaking, and particularly discloses a wire feeder guide pipe capable of guaranteeing advancing and retreating of a cored wire and a using method.The wire feeder guide pipe comprises two sets of slag scraping devices and a wire feeding guide pipe body, the two sets of slag scraping devices are symmetrically arranged at the tail end of the wire feeding guide pipe body, and each slag scraping device is provided with a scraper frame, a balancing weight, a support and a rotating shaft; one end of the support is fixed to the outer wall of the wire feeding guide pipe, the other end of the support is rotationally connected with the middle of the scraper frame through a rotating shaft, one side of the scraper frame is a blade section, the other side of the scraper frame is a balance weight section, and the blade section covers the outlet section of the tail end of the wire feeding guide pipe under the action of the balance weight ...

Подробнее
Номер записи: 17
04-06-2014 дата публикации

H-shaped steel with rib and concrete structure of H-shaped steel with rib

Номер: CN103835434A
Автор: ZHAO XINHUA, WANG ZHONGXUE, YUAN PENGJU, HUO XIWEI, KONG LINGKUN, FU CHANGWEI, JI JINLI, REN WEIJIE, GU FENGBO, SONG YUQING, FANG JINLIN, SUN XIAOQING
Принадлежит:

The invention discloses H-shaped steel with a rib and a concrete structure of the H-shaped steel with the rib. The H-shaped steel with the rib comprises a web, a top flange and a bottom flange, wherein the web is located between the top and bottom flanges and is respectively connected with the top and bottom flanges. The H-shaped steel with the rib further comprises an upper rib formed in an upper included angle formed by connecting the web and the top flange and a lower rib formed in a lower included angle formed by connecting the web and the lower flange. The upper and lower ribs are integrally formed with the web, the top and bottom flanges through hot rolling. The concrete structure of the H-shaped steel with the rib comprises a reinforcing steel bar, concrete and the H-shaped steel with the rib. The reinforcing steel bar is arranged around the H-shaped steel with the rib, the concrete is poured between the H-shaped steel with the rib and the reinforcing steel bar, and the H-shaped ...

Подробнее
Номер записи: 18
03-12-2008 дата публикации

Packed column and vapor phase chromatograph, preparation and analysis method for mellow wine

Номер: CN0101314125A
Автор: FU CHANGWEI, CHANGWEI FU
Принадлежит:

The invention provides a packed column, comprising a hollow tube body and immobile phases which are distributed in the tube body, wherein, the immobile phases are immobile phases formed by metal salts of fatty acid and non-polarity high-molecular porous microsphere inert carriers. The invention adopts the packed column provided with the immobile phases which are formed by the metal salts of the fatty acid and the non-polarity high-molecular porous microsphere inert carriers to replace a capillary column in the prior art, the capillary column is used to quantitatively analyze the content of trace small-molecular alcohol impurities in a battery solution or in an organic substance for preparing the battery solution, thus the packed column not only greatly reduces the analysis cost, but also improves the precision of quantitative analysis, thereby further contributing to ensuring the battery quality.

Подробнее
Номер записи: 19
16-01-2008 дата публикации

Filler column and gas chromatography and its preparation and organic analysis method

Номер: CN0101105483A
Автор: FU CHANGWEI, CHANGWEI FU
Принадлежит:

A packed column comprises a hollow pipe body and a stationary phase distributed in the pipe body; wherein the stationary phases comprises a stationary phase (A) and a stationary phase (B), both of which are mixed together; the stationary phase (A) is composed of polyethylene glycol and a carrier thereof; the stationary phase (B) is composed of phenyl methyl polysiloxane and the carrier thereof. The invention substitutes the mixed stationary phase packed column comprising polyethylene glycol and phenyl methyl polysiloxane for an organic substance in a capillary tube column quantitative analysis battery electrolyte solution in the prior art, which greatly lowers analysis cost, improves the accuracy of quantitative analysis and guarantees the quality of a battery.

Подробнее
Номер записи: 20
01-04-2009 дата публикации

Method for detecting potassium and/or sodium content in soluble lithium compounds

Номер: CN0101398373A
Автор: FU CHANGWEI, CHANGWEI FU
Принадлежит:

The invention provides a method used for measuring the content of kalium and/or sodium in soluble lithium compound, comprising the steps as follows: an atomic absorption spectrometry is used for measuring the absorbance of kalium and/or sodium in the sample solution of the soluble lithium compound to be measured; subsequently, the absorbance is compared with the working curve of the kalium and/or sodium so as to determine the concentration of the kalium and/or sodium in the sample water solution of soluble lithium compound to be measured; the content of the kalium and/or sodium in the soluble lithium compound is calculated according to the content of kalium or sodium is equal to 100 percent multiplied by concentration of the sample solution of the soluble lithium compound to be measured multiplied by the total volume of the sample solution of the soluble lithium compound to be measured multiplied by the total volume of the sample solution of the soluble lithium compound to be measured divided ...

Подробнее
Номер записи: 21
23-12-2009 дата публикации

Method for testing nickel and cobalt contents in nickel compound by titration

Номер: CN0101609049A
Автор: FU CHANGWEI, CHANGWEI FU
Принадлежит:

The invention relates to a method for testing nickel and cobalt contents in a nickel compound by a titration, which comprises the following steps of: 1) dissolving the nickel compound to obtain nickel solution; 2) taking the partial nickel solution obtained in step 1), and carrying out complexometric titration on the nickel solution to test the nickel and cobalt metal total content; 3) taking the partial nickel solution obtained in step 1), adding ammonium persulfate, and testing the nickel metal content by using the complexometric titration again; and 4) subtracting the nickel metal content in step 3) from the nickel and cobalt metal total content tested in step 2), and obtaining the cobalt metal content. The nickel and cobalt contents in samples tested by the testing method have the advantages of small relative error and high accuracy. The testing method has the advantages of good repeatability and lower requirements of test conditions at the same time, and is suitable for work and production ...

Подробнее
Номер записи: 22
16-10-2002 дата публикации

Indusrialized anjd standardized Chinese medicine decoction supplying scheme

Номер: CN0001374116A
Автор: FU CHANGWEI, CHANGWEI FU
Принадлежит:

The said industrialized and standardized Chinese medicine decoction supplying scheme is mainly to change available traditional Chinese medicine materials supplying into supplying processed single ingredients bolus or tablet with different medicine content for further dispensation of formula. The industrialized and standardized production of Chinese medicine decoction material is favorable to the modernized development of Chinese medicine.

Подробнее
Номер записи: 23
21-01-2015 дата публикации

350MPa-level low temperature resistant H-shaped steel and preparation method thereof

Номер: CN104294149A
Автор: YUAN PENGJU, FU CHANGWEI, LI CHAO, HAN LEILEI, GU FENGBO, ZHANG PEI, ZHAO CHUANDONG, ZHAO XINHUA, FANG JINLIN, YANG DONG, ZU YONG, TONG LIZHEN, ZHANG XUEMIN, SONG YUQING, ZHAO SHENGGONG, WU YULI, HAN WENXI, SHI LEI
Принадлежит:

The invention belongs to the technical field of steel, and particularly relates to 350MPa-level low temperature resistant H-shaped steel and a preparation method thereof. The 350MPa-level low temperature resistant H-shaped steel comprises the following chemical components in percentage by weight: 0.05-0.09% of carbon, 0.20-0.35% of silicon, 1.35-1.50% of manganese, 0.020-0.035% of niobium, 0.015-0.025% of vanadium, 0.005-0.025% of titanium, smaller than and equal to 0.020% of phosphorus, smaller than and equal to 0.015% of sulfur, and iron and inevitable impurities for balance. According to the 350MPa-level low temperature resistant H-shaped steel and the preparation method thereof, mainly through the low carbon content, and the application of niobium-titanium complex microalloying technology, the production of the 350MPa-level low temperature resistant H-shaped steel is realized; a prepared product has a yielding strength larger than 380 MPa, is good in low temperature resistant steel ...

Подробнее
Номер записи: 24
02-01-2008 дата публикации

Method for quantitative analyzing metallic element in alloy

Номер: CN0101097203A
Автор: FU CHANGWEI, CHANGWEI FU
Принадлежит:

A kind of method of analyzing metal element in alloy, the method includes alloy is dissolved in a event metal salt solution, using atom absorbing spectrometer to analyze density of the metal to be measured in the metal salt solution under absorbing wavelength of metal to be measured, calculated as content of metal to be measured in alloy= 100 %X(density of metal to be measured Xvolume of alloy sample metal salt solution)/quality of metal sample to calculate content of metal element in alloy, thereinto, content of metal element is not lower than 0.5 % of weight, absorbing wavelength of metal is hypo- sensitive absorbing line of metal to be measured. The invention selects hypo- sensitive absorbing line of metal to be measured to analyze by the atom absorbing spectrometer, so alloy sample metal salt solution is diluted for direct analysis, so error induced by dilutedness can be decreased greatly, operation is easy, fast and accuracy is high.

Подробнее
Номер записи: 25
08-04-2015 дата публикации

H-section steel

Номер: CN104499643A
Автор: FU CHANGWEI, SONG ZHIGUO, YANG QIN
Принадлежит:

The invention discloses an H-section steel. The H-section steel comprises a web, a top flange and a bottom flange; the web is located between the top flange and the bottom flange, and connected with the top flange and the bottom flange, respectively; the surface of each of the top flange and the bottom flange comprises an inner side surface and an outer side surface opposite to the inner side surface; the inner side surfaces of the top flange and the bottom flange both are connected with the web; lugs are arranged on the outer surface of the top flange and/or the outer surface of the bottom flange. According to the H-section steel, the surface of a component using the H-section steel is skid-resistant, sound-proof, and capable of relieving impact load.

Подробнее
Номер записи: 26
18-06-2014 дата публикации

Channel steel used in high-strength forklift gantry and preparation method thereof

Номер: CN103866183A
Автор: FU CHANGWEI, ZHAO XINHUA, ZHANG TAO, YANG ZHIJIE, WU YULI
Принадлежит:

The invention discloses channel steel used in a high-strength forklift gantry and a preparation method of the channel steel. The channel steel used in the high-strength forklift gantry comprises the following chemical components in percentage by weight: 0.14-0.20% of C, 0.30-0.50% of Si, 1.35-1.55% of Mn, less than or equal to 0.030% of P, less than or equal to 0.020% of S, 0.090-0.12% of V and the balance of iron and microimpurities. A channel steel product used in the high-strength forklift gantry is produced by using a vanadium-nitrogen microalloying process in combination with controlled heating and after-rolling cooling control, the produced channel steel is good in mechanical property, the yield strength is greater than 480MPa, the tensile strength is greater than 635MPa, and the HB hardness is greater than 190.

Подробнее
Номер записи: 27
05-02-2014 дата публикации

Hot-rolled inequilateral channel steel and application thereof

Номер: CN103557428A
Автор: FU CHANGWEI, YANG ZHIJIE, HAN LEILEI, SONG YUQING, WANG GANG, LIU CHUNWEI
Принадлежит:

The invention relates to hot-rolled inequilateral channel steel. The hot-rolled inequilateral channel steel comprises a web and wing plates, wherein the wing plates comprise a first wing plate and a second wing plate; two ends of the web are connected with the first wing plate and the second wing plate respectively; the first wing plate and the second wing plate are located on the same side of the web, are parallel to each other and perpendicular to the web; and the height of the first wing plate is larger than that of the second wing plate. According to the hot-rolled inequilateral channel steel, the first wing plate and the second wing plate adopt an inequilateral design, the first wing plate is higher than the second wing plate by 5-30 mm, so that in combination production of a forklift truck gantry and under the same bearing capacity, steel material consumption is reduced, dead weight of a gantry system is reduced wholly, and the manufacturing cost of the gantry is reduced; and meanwhile ...

Подробнее
Номер записи: 28
14-04-2023 дата публикации

Method for improving nitrogen element recovery rate and stability of vanadium-nitrogen alloy in converter steelmaking

Номер: CN115961114A
Автор: FU CHANGWEI, ZHANG PEI, WANG ZHONGXUE, NING WEI, LI SIJUN, HU BIN, HAO SHUAI, DU JINKE
Принадлежит:

The invention belongs to the technical field of steel smelting, and particularly relates to a method for improving the nitrogen element recovery rate and stability of vanadium-nitrogen alloy. The method comprises the following steps: (1) pretreating molten iron; (2) converter steelmaking; (3) refining; and (4) continuous casting. The method solves the problems of low recovery rate and instability of vanadium and nitrogen elements in the converter steelmaking process, not only can provide a basis for improvement and stability of subsequent product performance, but also can reduce alloy consumption in the steelmaking process and reduce the alloy use cost.

Подробнее
Номер записи: 29
04-06-2014 дата публикации

320MPa low-temperature resistant hot-rolled H-shaped steel and preparation method thereof

Номер: CN103834861A
Автор: FU CHANGWEI, WANG ZHONGXUE, HAN LEILEI, ZHANG TAO, FANG JINLIN, SONG HENGJUN
Принадлежит:

The invention discloses a 320MPa low-temperature resistant hot-rolled H-shaped steel and a preparation method thereof, the 320MPa low-temperature resistant hot-rolled H-shaped steel comprises the following chemical components by weight percent: 0.05-0.11% of C, 0.20-0.35% of Si, 1.05-1.30% of Mn, not more than 0.020% of P, not more than 0.015% of S, 0.020-0.035% of Nb, 0.005-0.025% of Ti, and the balanced of Fe and trace impurity. The production of the 320MPa low-temperature resistant hot-rolled H-shaped steel is realized by using niobium-titanium composite microalloying process through low-carbon content under the high hot-rolling temperature condition, the prepared low-temperature resistant steel is good in mechanical property, and the longitudinal impact is greater than 165J at -30 DEG C.

Подробнее
Номер записи: 30
17-08-2011 дата публикации

Analysis method for organic in battery electrolyte

Номер: CN0101105483B
Автор: FU CHANGWEI, CHANGWEI FU
Принадлежит:

A method for analyzing organics in a battery electrolyte comprises: adjusting carrier gas flow of a gas chromatograph, sampling, temperature programming, recording detecting results. The organics includes at least two of the dimethyl carbonate, methyl ethyl carbonate, diethyl carbonate, ethylene carbonate, propylene carbonate, vinylene carbonate, ethylene sulfite, propane sultone, phenylcyclohexane and diphenyl. The gas chromatograph includes a packed column which comprises a hollow pipe body and a stationary phase distributed in the pipe body; wherein the stationary phases comprises a stationary phase (A) and a stationary phase (B), both of which are mixed together; the stationary phase (A) is composed of polyethylene glycol and a carrier thereof; the stationary phase (B) is composed of phenyl methyl polysiloxane and the carrier thereof. The invention adopts the mixed stationary phase packed column comprising polyethylene glycol and phenyl methyl polysiloxane, which not only greatly lowers ...

Подробнее
Номер записи: 31
16-05-2023 дата публикации

Fine-grain spring steel strip for coil spring and preparation method of fine-grain spring steel strip

Номер: CN116121661A
Автор: HAO SHUAI, CONG YUWEI, LIU ZHAOWA, LI SIJUN, LI YUGONG, FU CHANGWEI, HU BIN, SHI HONGYAN, ZOU CHUNFENG, DU JINKE, LI PING, WANG XIAOKE
Принадлежит:

The invention belongs to the technical field of steel and iron, and particularly relates to a fine grain spring steel strip for a coil spring and a preparation method of the fine grain spring steel strip for the coil spring, and the fine grain spring steel strip comprises the following chemical components in percentage by weight: 0.62%-0.64% of C, 1.90%-2.00% of Si, 0.80%-0.90% of Mn, less than or equal to 0.010% of S, less than or equal to 0.015% of P, 0.12%-0.20% of Cr, 0.010%-0.020% of Nb, less than or equal to 0.008% of Al and the balance of iron and inevitable impurities. The grain size is not less than 10 grades, and the total grade of non-metallic inclusions is not more than 2.5 grades. By adding microalloying elements, strictly controlling the content of Al in the steel, reducing the grade of non-plastic inclusions and adopting a high-reduction-rate hot rolling process and a slow cooling process, the product has the characteristics of high grain size, pure steel, excellent banded ...

Подробнее
Номер записи: 32
04-06-2014 дата публикации

235MPa-level low temperature resisting hot-rolled H-shaped steel and preparation method thereof

Номер: CN103834860A
Автор: FU CHANGWEI, HAN LEILEI, MA WEN, ZHANG TAO, SONG ZHIGUO, SONG HENGJUN, FANG JINLIN
Принадлежит:

The invention discloses 235MPa-level low temperature resisting hot-rolled H-shaped steel and a preparation method thereof. The 235MPa-level low temperature resisting hot-rolled H-shaped steel comprises the following chemical components in percentage by weight: 0.08-0.16 percent of C, 0.10-0.30 percent of Si, 0.65-1.20 percent of Mn, not higher than 0.025 percent of P, not higher than 0.025 percent of S, 0.015-0.035 percent of Nb, 0.005-0.030 percent of Ti and the balance of iron and trace impurities. Through main processes of reducing the content of carbon and manganese and applying a niobium-titanium composite micro-alloying technique, the preparation method disclosed by the invention realizes the production of a 235MPa-level low temperature resisting hot-rolled H-shaped steel product at a high final hot rolling temperature; the produced low temperature resisting hot-rolled H-shaped steel has good mechanical property and the longitudinal impact power at -20 DEG C is larger than 206J.

Подробнее
Номер записи: 33
29-10-2014 дата публикации

Submerged nozzle for special-shaped blank casting and arrangement mode thereof

Номер: CN104117665A
Автор: YANG ZHIJIE, FU CHANGWEI, HAN LEILEI, ZHAO XINHUA, SONG YUQING
Принадлежит:

The invention discloses a submerged nozzle for special-shaped blank casting and an arrangement mode thereof. The submerged nozzle is annular, and a side wall with a hollow inner cavity is formed. A circular first opening is formed in the upper end face of the side wall, and a T-shaped second opening is formed in the lower end face of the side wall. A vertical part and a horizontal part which is connected with the middle of the vertical part are arranged on the edge of the second opening, the center of the circle of the first opening and the center of the second opening are both placed on the axis of the side wall, and the area of the first opening is equal to the area of the second opening. The hollow inner cavity is formed by correspondingly extending to the edge of the second opening from the edge of the first opening in the quasi-generatrix direction in a cut-through mode. According to the scheme, a stable and even flow field can be formed in a crystallizer, particularly the temperature ...

Подробнее
Номер записи: 34
27-06-2023 дата публикации

Screen projection processing method and device and electronic equipment

Номер: CN116347132A
Автор: TANG XIAOJUN, FU CHANGWEI, HU FEIYANG, LUO WEIRU
Принадлежит:

The embodiment of the invention discloses a screen projection processing method and device, a computer readable storage medium and electronic equipment. The method comprises the following steps: a screen projection box obtains a watching request sent by target watching end equipment, establishes connection with a media server, and sends a pull stream address corresponding to the media server to the target watching end equipment; and obtaining a screen projection stream sent by a screen projection end device, and sending the screen projection stream to a screen projection display screen and the media server, so that the target watching end device obtains the screen projection stream from the media server according to the stream pulling address. According to the scheme, participants can view the file shared by the screen projection end equipment through different equipment according to own requirements, so that the conference participation experience of users can be improved, and the problem ...

Подробнее
Номер записи: 35
23-06-2023 дата публикации

Audio data processing method, storage medium and electronic equipment

Номер: CN116312579A
Автор: LIANG QIDONG, FU CHANGWEI, HU FEIYANG, TANG XIAOJUN, LI SONGLIN, LUO WEIRU, TENG LONGBIN, ZHANG TINGTING
Принадлежит:

The invention discloses an audio data processing method, a storage medium and electronic equipment. The method comprises the steps that multiple paths of first audio data from multiple first terminals are received, and audio processing parameters of each path of first audio data are adaptively adjusted based on the uplink network state between each first terminal and an adaptive network audio mixing server; performing sound mixing processing on the multiple paths of first audio data to obtain second audio data; and sending the second audio data to a plurality of second terminals, the audio processing parameters of the second audio data being adaptively adjusted based on the downlink network state between the adaptive network audio mixing server and each second terminal. According to the invention, the technical problems of low audio data transmission efficiency and poor transmission quality caused by only processing low-frequency band audio in a normal network state in an audio data processing ...

Подробнее
Номер записи: 36
24-03-2010 дата публикации

Method for quantitative analyzing metallic element in alloy

Номер: CN0100595567C
Автор: FU CHANGWEI, CHANGWEI FU
Принадлежит:

A kind of method of analyzing metal element in alloy, the method includes alloy is dissolved in a event metal salt solution, using atom absorbing spectrometer to analyze density of the metal to be measured in the metal salt solution under absorbing wavelength of metal to be measured, calculated as content of metal to be measured in alloy= 100 %X(density of metal to be measured Xvolume of alloy sample metal salt solution)/quality of metal sample to calculate content of metal element in alloy, thereinto, content of metal element is not lower than 0.5 % of weight, absorbing wavelength of metal ishypo- sensitive absorbing line of metal to be measured. The invention selects hypo- sensitive absorbing line of metal to be measured to analyze by the atom absorbing spectrometer, so alloy sample metal salt solution is diluted for direct analysis, so error induced by dilutedness can be decreased greatly, operation is easy, fast and accuracy is high.

Подробнее
Номер записи: 37
07-01-2015 дата публикации

Dedicated low-temperature-resistant H-shaped steel for alpine region and preparation method thereof

Номер: CN104264030A
Автор: YUAN PENGJU, FU CHANGWEI, LI CHAO, HAN LEILEI, GU FENGBO, ZHANG PEI, ZHAO CHUANDONG, ZHAO XINHUA, FANG JINLIN, YANG DONG, ZU YONG, TONG LIZHEN, ZHANG XUEMIN, SONG YUQING, ZHAO SHENGGONG, WU YULI, HAN WENXI, SHI LEI
Принадлежит:

The invention belongs to the technical field of steel, and discloses a preparation method of dedicated low-temperature-resistant H-shaped steel for an alpine region. The preparation method comprises the following steps: 1) after preliminary desulfurization of molten iron, according to the steel component requirements of Canadian standards G 40.21-13, smelting in a converter, and conducting LF (Ladle Furnace) refining; 2) after refining, conducting a near-net-shape beam blank continuous casting to prepare H-shaped near-net-shape continuous casting blank; 3) placing the continuous casting blank in a furnace, heating the blank, taking the blank out of the furnace, and then descaling; 4) rolling the descaled blank, wherein the specifications and the permissible variation in dimension of the rolled product are in accordance with Chinese standards GB/T 1591-2008; 5) air-cooling on the rolled product, and straightening the product to obtain the low-temperature-resistant H-shaped steel. According ...

Подробнее
Номер записи: 38
22-08-2023 дата публикации

Smelting method of titanium microalloyed Q355B steel

Номер: CN116623069A
Автор: LI PING, ZHOU HAO, LI SHAOSHUAI, LI SIJUN, ZOU CHUNFENG, FU CHANGWEI, HU BIN, WU XUPENG, LU FANGZHOU, HAO SHUAI, DU JINKE, SHI HONGYAN
Принадлежит:

The invention belongs to the technical field of metallurgy, and relates to a smelting method of titanium microalloyed Q355B steel. Comprising the following steps: 1) converter smelting: adopting bottom blowing nitrogen in the whole smelting process; the endpoint carbon content of the converter is controlled to be 0.06-0.10%, the oxygen content is 300-450ppm, and the endpoint molten steel temperature is controlled to be 1630-1640 DEG C; (2) LF refining: controlling the entering temperature of the LF to be 1550-1570 DEG C; the LF refining adopts whole-course bottom argon blowing stirring; after refining and entering the station, deoxidizing and slagging; and 3) continuous casting. The method is used for reducing the smelting cost, stabilizing the effective titanium content in the steel and improving the product performance stability.

Подробнее
Номер записи: 39
09-09-2015 дата публикации

Cooling device of high -quality continuous casting billet

Номер: CN0204621037U
Автор: WANG ZHONGXUE, HAN LEILEI, ZOU CHUNFENG, FU CHANGWEI, HUO XIWEI, JI RUIDONG, LIANG JINYUE, LIU ZHIMIN
Принадлежит:

The utility model discloses a cooling device of high -quality continuous casting billet, the device is including setting up the flame shield that the two is relative (1) on piling up neatly the position, arbitrary flame shield (1) bottom sets up a plurality of guide pulleys (2), all place on guide rail (3) guide pulley (2), makes flame shield (1) slide along guide rail (3). The utility model discloses can guarantee that the continuous casting billet carries out the slow cooling under the high temperature mode, effectively alleviate the segregation of continuous casting billet solute element, improve the even degree of organizing, gas content in controlling the continuous casting billet macrostructure and reducing the steel.

Подробнее
Номер записи: 40
07-07-2023 дата публикации

Method and device for determining steel feeding temperature

Номер: CN116393661A
Автор: ZOU CHUNFENG, HAN LEILEI, LI PING, HAO SHUAI, FU CHANGWEI, SHI HONGYAN, DU JINKE, HU BIN
Принадлежит:

The invention discloses a method and a device for determining steel feeding temperature, which are applied to the steel smelting industry and comprise the following steps: determining the nth refining steel feeding temperature of a steel ladle, n being an integer not less than 1; influence factors on the temperature in the steel ladle turnover process and the temperature influenced by the influence factors are determined, wherein the influence factors comprise one or a combination of more of the power-on amount in the refining process, the temperature drop in the casting process and the empty ladle operation time; and determining the steel feeding temperature of the (n + 1) th refining of the steel ladle according to the steel feeding temperature of the nth refining and the temperature influenced by the influence factors. The factors influencing the temperature exist in the steel ladle turnover process, the influence factors and the temperature values influenced by the influence factors ...

Подробнее
Номер записи: 41
24-11-2010 дата публикации

Method for detecting potassium and/or sodium content in soluble lithium compounds

Номер: CN0101398373B
Автор: FU CHANGWEI, CHANGWEI FU
Принадлежит:

The invention provides a method used for measuring the content of kalium and/or sodium in soluble lithium compound, comprising the steps as follows: an atomic absorption spectrometry is used for measuring the absorbance of kalium and/or sodium in the sample solution of the soluble lithium compound to be measured; subsequently, the absorbance is compared with the working curve of the kalium and/orsodium so as to determine the concentration of the kalium and/or sodium in the sample water solution of soluble lithium compound to be measured; the content of the kalium and/or sodium in the solublelithium compound is calculated according to the content of kalium or sodium is equal to 100 percent multiplied by concentration of the sample solution of the soluble lithium compound to be measured multiplied by the total volume of the sample solution of the soluble lithium compound to be measured multiplied by the total volume of the sample solution of the soluble lithium compound to be measureddivided ...

Подробнее
Номер записи: 42
04-06-2014 дата публикации

Rolling equipment of H-shaped steel with ribs and production method of H-shaped steel with ribs

Номер: CN103831295A
Автор: ZHAO XINHUA, WANG ZHONGXUE, YUAN PENGJU, FU CHANGWEI, YANG DONG, KONG LINGKUN, JI JINLI, LI CHAO, GU FENGBO, TONG SONGZE, PU HONGBING, YANG ZHIJIE
Принадлежит:

The invention discloses a rolling equipment of H-shaped steel with ribs and a production method of the H-shaped steel with the ribs. The rolling equipment comprises a rolling device and a rib rolling machine, wherein the rolling device is used for rolling an H-shaped steel body with the ribs, and the rib rolling machine is used for rolling upper ribs and lower ribs on the H-shaped steel body with the ribs; the rib rolling machine is provided with an upper horizontal rolling roller and a lower horizontal rolling roller, and the axis of the upper horizontal rolling roller and the axis of the lower horizontal rolling roller are parallel to each other and are symmetrical with respect to a web in the vertical direction. The rolling method comprises a BD cogging rolling technology and an all-powerful finish rolling technology, wherein rough rolling is conducted on a blank in the BD cogging rolling technology; in the all-powerful finish rolling technology, after rough rolling is conducted on the ...

Подробнее
Номер записи: 43
14-01-2015 дата публикации

345MPa low-yield-tensile ratio H-shaped steel and preparation method thereof

Номер: CN104278195A
Автор: DU XIANBIN, FU CHANGWEI, HAN LEILEI, WU YULI, GU FENGBO
Принадлежит:

The invention provides a 345MPa low-yield-tensile ratio H-shaped steel and a preparation method thereof. The H-shaped steel comprises the following chemical components in percentage by weight: 0.10-0.19% of C, 0.18-0.40% of Si, 1.20-1.55% of Mn, at most 0.035% of P, at most 0.030% of S, 0.010-0.020% of V, and the balance of iron and trace impurities. By optimizing the component design and combining the controlled heating and rolling, the 345MPa low-yield-tensile ratio H-shaped steel can be produced under the technological conditions of upward argon blowing and high finishing temperature, thereby implementing low-cost production of the products.

Подробнее
Номер записи: 44