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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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 13. Отображено 13.
23-05-2023 дата публикации

Titanium-based tubular alloy target material and preparation method thereof

Номер: CN116145090A
Автор: ZHANG FENGGE, WEI TIEFENG, YUE WANXIANG, ZHANG QIANNAN, ZHANG XUEHUA, MENG XIAOTING
Принадлежит:

Compared with a conventional powder loading tube target production process, the titanium-based tubular alloy target material and the preparation method have the advantages that powder is firstly subjected to compression molding, then subjected to cold isostatic pressing densification and finally subjected to hot isostatic pressing sintering, and the problems that Ti-based powder is large in shrinkage, prone to bending and difficult to machine after hot isostatic pressing are solved. The relative density of the finally obtained titanium-based tubular alloy target material is larger than or equal to 99%, the grain size is uniform, and the average grain size is 30-200 microns.

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Номер записи: 1
04-04-2023 дата публикации

Preparation method of titanium-aluminum alloy, titanium-aluminum alloy and application

Номер: CN115896501A
Автор: ZHANG FENGGE, ZHANG XUEHUA, WEI TIEFENG, LI JIANKUI, YAO WEI, ZHAO HONG
Принадлежит:

The invention discloses a preparation method of a titanium-aluminum alloy, the titanium-aluminum alloy and application of the titanium-aluminum alloy. The method comprises the following steps: a first vacuum consumable electric arc melting step: fixing an electrode prepared from a titanium-aluminum raw material in a vacuum consumable electric arc furnace for primary melting to form a first blank; a vacuum suspension smelting step: carrying out vacuum suspension smelting on the first blank to form a second blank; and a second vacuum consumable electric arc melting step: taking the second blank as an electrode, fixing the second blank in the vacuum consumable electric arc furnace, and carrying out vacuum consumable electric arc melting again to form the titanium-aluminum alloy. By means of the preparation method, the titanium-aluminum alloy which is high in density, free of air holes, segregation and cracks, good in machining performance and uniform in structure can be obtained.

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Номер записи: 2
21-09-2011 дата публикации

Method for preparing zinc oxide-based sputtering target material

Номер: CN0101845614B
Автор: WEIJIE SONG, RUIQIN TAN, TIEFENG WEI, YE YANG, XIANPENG ZHANG, YVLONG ZHANG, SONG WEIJIE, TAN RUIQIN, WEI TIEFENG, YANG YE, ZHANG XIANPENG, ZHANG YVLONG
Принадлежит:

The invention discloses a method for preparing a zinc oxide-based sputtering target material. The method comprises the following steps of: performing die pressing on doped zinc oxide nano-powder at the pressure of between 30 and 150 MPa and maintaining the pressure for 30 to 300 seconds; performing isostatic cool pressing on the doped zinc oxide nano-powder at the pressure of between 120 and 300 MPa and maintaining the pressure for 60 to 600 seconds; heating the doped zinc oxide nano-powder to the temperature of between 950 and 1,300 DEG C at a heating rate of between 5 and 10 DEG C per minute, and maintaining the temperature for 1 to 30 minutes; cooling the doped zinc oxide nano-powder to the temperature of between 650 and 1,100 DEG C at a cooling rate of between 10 and 100 DEG C per minute and maintaining the temperature for 2 to 40 hours; and finally, cooling the doped zinc oxide nano-powder to the room temperature at a cooling rate of between 0.5 and 10 DEG C per minute, and performing ...

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Номер записи: 3
29-09-2010 дата публикации

Preparation method of doped zinc oxide nano powder

Номер: CN0101844917A
Автор: WEIJIE SONG, RUIQIN TAN, JIANLIN WANG, TIEFENG WEI, YE YANG, XIANPENG ZHANG, YVLONG ZHANG, JUNHUA ZHAO, SONG WEIJIE, TAN RUIQIN, WANG JIANLIN, WEI TIEFENG, YANG YE, ZHANG XIANPENG, ZHANG YVLONG, ZHAO JUNHUA
Принадлежит:

The invention discloses a preparation method of doped zinc oxide nano powder, which comprises the following steps that: doped metal salt and zinc salt are dissolved in water to form salt solution; under intense stirring, the salt solution is uniformly dripped into precipitant solution, the pH value of a mixed system is kept to be 5 to 10 and the temperature is kept to be 10 to 80DEG C during the dripping process to obtain a coprecipitation product; after the coprecipitation product is aged for 10 to 30h, precipitate is sequentially washed by deionzied water and absolute ethyl alcohol and is dried to obtain a white product; and the white product is calcined for 1 to 5h at 400 to 800DEG C to prepare the doped zinc oxide nano powder. The method has the advantages of low cost, simple used equipment and easy large-scale industrial production, and the prepared doped zinc oxide nano powder has the advantages of uniform distribution, high purity and no non-conductive second phase, and can be used ...

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Номер записи: 4
29-09-2010 дата публикации

Method for preparing zinc oxide-based sputtering target material

Номер: CN0101845614A
Автор: WEIJIE SONG, RUIQIN TAN, TIEFENG WEI, YE YANG, XIANPENG ZHANG, YVLONG ZHANG, SONG WEIJIE, TAN RUIQIN, WEI TIEFENG, YANG YE, ZHANG XIANPENG, ZHANG YVLONG
Принадлежит:

The invention discloses a method for preparing a zinc oxide-based sputtering target material. The method comprises the following steps of: performing die pressing on doped zinc oxide nano-powder at the pressure of between 30 and 150 MPa and maintaining the pressure for 30 to 300 seconds; performing isostatic cool pressing on the doped zinc oxide nano-powder at the pressure of between 120 and 300 MPa and maintaining the pressure for 60 to 600 seconds; heating the doped zinc oxide nano-powder to the temperature of between 950 and 1,300 DEG C at a heating rate of between 5 and 10 DEG C per minute, and maintaining the temperature for 1 to 30 minutes; cooling the doped zinc oxide nano-powder to the temperature of between 650 and 1,100 DEG C at a cooling rate of between 10 and 100 DEG C per minute and maintaining the temperature for 2 to 40 hours; and finally, cooling the doped zinc oxide nano-powder to the room temperature at a cooling rate of between 0.5 and 10 DEG C per minute, and performing ...

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Номер записи: 5
30-05-2023 дата публикации

TiAlN/CrAlLaBN composite coating, preparation method thereof and cutter

Номер: CN116180006A
Автор: ZHANG FENGGE, MENG XIAOTING, WEI TIEFENG, MIAO LEI
Принадлежит:

The invention provides a TiAlN/CrAlLaBN composite coating, a preparation method of the TiAlN/CrAlLaBN composite coating and a tool, and relates to the technical field of coatings. The TiAlN/CrAlLaBN composite coating comprises a TiAlN binding layer, a TiAlN/CrAlLaBN transition layer and a CrAlLaBN top layer which are sequentially arranged on the surface of a base body from inside to outside. Through compounding of the three layers, the prepared composite coating has certain hardness, also has high toughness and coating binding force, is excellent in comprehensive performance, and can meet the requirements of subsequent harsh application scenes. The invention further provides a preparation method of the TiAlN/CrAlLaBN composite coating layer.

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Номер записи: 6
25-08-2010 дата публикации

Co-doped nanometer zinc oxide powder body and preparation method thereof

Номер: CN0101811660A
Автор: WEIJIE SONG, JIANLIN WANG, TIEFENG WEI, YE YANG, XIANPENG ZHANG, YULONG ZHANG, SONG WEIJIE, WANG JIANLIN, WEI TIEFENG, YANG YE, ZHANG XIANPENG, ZHANG YULONG
Принадлежит:

The invention discloses a co-doped nanometer zinc oxide powder body and a preparation method thereof. The co-coped elements include a first metal element and a second metal element, wherein the first metal element is titanium, and the second metal element is aluminum, gallium, indium or tin; by total amount of substance, the sum of the first metal element, the second metal element and zinc in zinc oxide is 100 parts, wherein the sum of the first metal element and the second metal element accounts for 0.005-30 parts, and the scope of the part ratio of the first metal element and the second metal element is 1:100 to 100:1. Compared with the prior art, the method has accurately controllable reaction conditions, and the applied device is simple, has low cost, can control pollution conveniently, and is suitable for large-scale industrial production; and the doping uniformity of the obtained co-doped zinc oxide powder body is high, the powder body particles are uniform and in approximate ball ...

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Номер записи: 7
09-05-2023 дата публикации

CrAlFe-based alloy target material and preparation method thereof

Номер: CN116079055A
Автор: ZHANG FENGGE, ZHANG QIANNAN, WEI TIEFENG, ZHANG XUEHUA, YUE WANXIANG, GAO ZHONG
Принадлежит:

The invention belongs to the technical field of powder metallurgy materials and manufacturing thereof, and particularly relates to a CrAlFe-based alloy target material and a preparation method thereof.The preparation method comprises the following steps that S1, Al powder and Fe powder are subjected to high-energy ball milling treatment, and pre-alloyed AlFe alloy powder is obtained; s2, the AlFe alloy powder and the remaining raw material powder of the CrAlFe-based alloy target material are mixed to be uniform, and CrAlFe-based alloy powder is obtained; s3, under the vacuum condition, hot pressed sintering is conducted on the CrAlFe-based alloy powder, after hot pressed sintering is finished, pressure relief is conducted, then cooling and demolding are conducted, and a CrAlFe-based alloy sintered blank is obtained; and S4, the CrAlFe-based alloy sintered blank is machined, and the CrAlFe-based alloy target material is obtained. According to the method, the pressure is relieved before cooling ...

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Номер записи: 8
10-02-2016 дата публикации

Steam schizolysis simulation experiment stove heating tube in section of convection chamber structure

Номер: CN0205024168U
Автор: LIU JIAN, JI YONGGANG, DAI YUELI, CHU HONGLING, DU HAI, SUN SHUKUN, ZHANG YONGJUN, WANG SIHAN, XU XIANMING, WANG GUIZHI, WAN SHUBAO, WEI TAO, ZHAO YULONG, WEI TIEFENG, YU JIATAO, KANG QINGHUA, CHEN LIJING, HE DEFU, WANG FENGRONG, MA LI NA, LI WENPENG, BAI YUJIE, LIU YUXIANG, CHANG YUHONG, SHAN YIMING, ZHU LI NA, LI JI, MA LI'NA, ZHU LI'NA
Принадлежит:

The utility model provides a steam schizolysis simulation experiment stove heating tube in section of convection chamber structure, the convection current boiler tube includes a downspout, a distributor pipe, a U -shaped coil pipe, the U -shaped coil pipe with the distributor pipe arranges from top to bottom, and set up in one side of convection current boiler tube, the downspout for the U -shaped coil pipe with the distributor pipe set up in the opposite side of convection current boiler tube, the U -shaped coil pipe with the downspout respectively with the entry end and the exit end intercommunication of distributor pipe.

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Номер записи: 9
28-04-2023 дата публикации

Tungsten carbide target material as well as preparation method and special mold thereof

Номер: CN116023142A
Автор: ZHANG FENGGE, ZHANG XUEHUA, WEI TIEFENG, WANG JIANFENG, MIAO LEI, SHI ZHENG
Принадлежит:

The invention provides a tungsten carbide target as well as a preparation method and a special mold thereof. The preparation method of the target material comprises the following steps: a mold pressing step: carrying out mold pressing on tungsten carbide powder to obtain a first blank; a loading step: loading a plurality of first blanks into a mold in a manner of superposing or/and regularly arranging; hot-pressing sintering: putting the mold filled with the first blank into a hot-pressing furnace, and carrying out hot-pressing sintering to obtain a second blank; and a machining step: machining the second blank to obtain the tungsten carbide target material with the required size. According to the preparation method, a special hot-pressing mold is adopted for hot pressing, and the prepared tungsten carbide target material has the advantages of near-net-shape forming, low cost, high density, no pore, no crack, good processing performance, uniform structure and the like.

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Номер записи: 10
19-11-2014 дата публикации

Starting emission reduction method for ethene device

Номер: CN104152173A
Автор: WEI TAO, XU QIANG, ZHAO JINSONG, WEI TIEFENG, LI GUYAN, QIU TONG, HONG JINHUI, ZHANG JIAN, CHEN BINGZHEN, SUI FENGWEI, WANG SUJING, SONG GUANG, YU JIATAO, FU JIE, ZHAO YONGCHEN, ZHANG ZHONGBAO, WANG MEIQIAN, HE DING, ZHAO CHUANYU, DING HAQUAN, ZHANG SHUJING
Принадлежит:

The invention relates to a starting emission reduction method for an ethene device. The method comprises the following steps: first, an ethene and propylene refrigeration system is started and a refrigerating capacity is supplemented for cold box precooling; second, the cold box precooling is started; third, total reflux of an ethene rectifying tower, a propylene rectifying tower and an ethane removing tower is established; fourth, a cracking furnace is started; fifth, a cracked gas compressor is started; sixth, a subsequent device is started and starting of the ethene device is finished. Because the cold box is subjected to cooling before formal feeding, the product qualified time of the cold box is shortened greatly, the cooling process of the cold box is controllable, and leakage dangers are avoided. Through establishment of total reflux of a low-temperature depropanization tower, the total qualified time of a high-low-pressure depropanization tower is shortened. Because natural gases ...

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Номер записи: 11
12-05-2023 дата публикации

Quenching oil pump of ethylene unit

Номер: CN116104767A
Автор: ZUO GUANGFENG, WEI TIEFENG, ZHOU YU, FENG ZHONGLIANG, AN GUANGSHAN, LIU SHUQING, WANG DEJIAN, WANG YANPENG, YAN YAN, ZHANG YUHUI, GUO AN, LIU QUANFU, YAN WENZE, ZHANG SHI, WANG JUN, TONG KUIJIANG, CHU ZHENGHUI, LI BOYU, WANG HAIMING, LI BOYUAN, LIU BO, SUN DAZHI, GU ZUPENG, LI MING, LENG ZHIQIANG, LYU QINGMING, WANG JIAHANG, LI HETING, MEN YANAN
Принадлежит:

The invention discloses an ethylene unit quenching oil pump which comprises a double-volute pump body, a pump cover, a double-suction staggered impeller and a center shaft. The double-suction staggered impeller is located in the double-volute pump body, and the pump covers are installed on the two sides of the double-volute pump body respectively. The center shaft penetrates through the pump covers on the two sides of the pump body and the double-suction staggered impeller in the pump body, and one end of the center shaft is connected with a driving mechanism. An impeller wear ring is mounted on the peripheral surface of the outer side of the annular convex edge at the impeller inlet; the outer side of the impeller wear ring is sleeved with a cover wear ring, the outer side of the cover wear ring is connected with the pump cover, and the outer side surface of the impeller wear ring and the inner side surface of the cover wear ring are each provided with a protective layer. The problems ...

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Номер записи: 12
02-06-2023 дата публикации

CrW alloy target material and preparation method thereof

Номер: CN116200639A
Автор: ZHANG FENGGE, YUE WANXIANG, WEI TIEFENG, ZHANG QIANNAN, SHI ZHENG, YAO WEI
Принадлежит:

The invention discloses a CrW alloy target material and a preparation method thereof. Specifically, the CrW alloy target material with the W atomic ratio up to 50% is prepared by optimizing the powder granularity and a forming process. The CrW alloy target material is uniform in structure, free of segregation, free of agglomeration and the like, and the density is 99% or above. Besides, a layer of material easy to machine is welded at the bottom of the target material, so that the problem that the target material is crisp and hard and is not easy to machine into the target material with a complex shape is solved, and the target material can be widely applied.

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Номер записи: 13