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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 25. Отображено 25.
13-06-2023 дата публикации

Mold shell for directional solidification of high-inertia TiAl alloy and preparation method of mold shell

Номер: CN116251926A
Автор: DING XIANFEI, LIU HAN, HUANG HONG, ZONG XIAO, HU HAITAO, NAN HAI
Принадлежит:

The invention provides a mold shell for directional solidification of a high-inertia TiAl alloy and a preparation method of the mold shell. The mold shell sequentially comprises a surface layer, a transition layer and a back layer from inside to outside, the surface of the surface layer is filled with a yttrium oxide sand layer, the surface of the transition layer is filled with a yttrium oxide sand layer, the surface of the back layer is filled with a zirconium oxide sand layer, and all the sand layers are tightly combined without cracks. According to the mold shell coating, yttrium oxide is adopted as a surface layer and transition layer refractory material, zirconium oxide is adopted as a back layer refractory material, and yttrium sol is adopted as a binder; meanwhile, the dispersing agent, the surfactant and the defoaming agent of specific types and proportions are added, so that the slurry is uniform and good in wettability, pores and bubbles of a mold shell are effectively eliminated ...

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Номер записи: 1
11-08-2023 дата публикации

Automobile active suspension system, control method and vehicle

Номер: CN116572689A
Автор: LU JUN, DONG HAOMIN, LIU RU, LAN CHAO, NAN HAI, YUE ZHENDONG, WANG JINBIAO, ZHANG LIANG, YANG WENLI, YIN BINGJIANG
Принадлежит:

The invention relates to an automobile active suspension system, a control method and a vehicle, the automobile active suspension system comprises a simulation state simulation center arranged in a domain controller in a vehicle body, and the simulation state simulation center is respectively connected with a suspension adjusting system, an active suspension simulation system, a suspension feedback system and a moment road condition feedback system; the suspension adjusting system is arranged on an automobile and connected with the simulation state simulation center, the suspension module and the signal collecting system. The controller is respectively connected with the suspension receiving module and the suspension feedback system; and the active suspension simulation system is connected with the real-time road condition feedback. The control method comprises the following steps: a driving willingness: the controller reports a preliminary driving suspension adjustment scheme to the suspension ...

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Номер записи: 2
01-05-2014 дата публикации

CALCIUM OXIDE-BASED CERAMIC CORE AND PREPARATION METHOD THEREOF

Номер: WO2014063491A1
Автор: WU, Guoqing, ZHOU, Pengpeng, ZHAO, Jiaqi, NAN, Hai
Принадлежит:

Disclosed are a calcium oxide-based ceramic core and a preparation method thereof, belonging to the technical field of precision casting of titanium alloy. The preparation method comprises: firstly preparing rare-earth-oxide-coated calcium oxide powder; secondly modeling and sintering the rare-earth-oxide-coated calcium oxide powder; and finally obtaining the calcium oxide-based ceramic core, wherein the calcium oxide-based ceramic core is prepared from the following raw materials in percentage by weight: 5-15% of plasticizer, 0.001-20% of mineralizer, and the balance of rare-earth-oxide-coated calcium oxide powder, and the sum of the raw materials is 100% in percentage by weight. The calcium oxide-based ceramic core prepared by the method has excellent mechanical properties and can effectively overcome the defect that calcium oxide is easy to hydrate when meeting water.

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Номер записи: 3
02-05-2023 дата публикации

Method and system for diagnosing cooling capacity of dual-motor hybrid power motor

Номер: CN116039354A
Автор: MENG FANYU, SHENG ZHENXING, WANG DEPING, ZHU HAO, LI QUAN, NAN HAI, WANG JINBIAO, LU JUN, JU HAO
Принадлежит:

The invention relates to the technical field of new energy motors, in particular to a dual-motor hybrid power motor cooling capacity diagnosis method and system. The method comprises a cooling loop used for diagnosis, the cooling loop comprises a radiator, an electronic water pump, a DCDC, a generator inverter, a driving motor inverter, a generator and a driving motor which are connected in sequence, and the driving motor is connected with the radiator; according to the scheme, the cooling loop is divided into main parts, in the running process of the whole vehicle, when the temperature of all parts is too high, the electronic water pump can be started, the electronic water pump rotates to dissipate heat of the parts needing to be cooled through cooling liquid flow, and the heat is dissipated into the air through the radiator; the cooling capacity of the five parts is diagnosed, so that the situation that the performance of the motor system is reduced due to the fact that the motor system ...

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Номер записи: 4
11-07-2023 дата публикации

Vehicle safety monitoring system and vehicle with same

Номер: CN116409271A
Автор: LU JUN, DONG HAOMIN, YUE ZHENDONG, LIU RU, NAN HAI, LAN CHAO, YANG WENLI, WANG JINBIAO, YIN BINGJIANG, ZHANG LIANG
Принадлежит:

The invention provides a vehicle safety monitoring system and a vehicle with the same, and the system comprises a strain module which is connected with a to-be-detected part of the vehicle and generates elastic deformation under the thermal deformation of the to-be-detected part; the phase change module is connected with the strain module, and the strain module is used for extruding the phase change module to change the internal pressure of the phase change module; and the detection module is in signal connection with the phase change module and a whole vehicle control unit of the vehicle, and the detection module is used for feeding back the first phase change state in the phase change module to the whole vehicle control unit. According to the invention, force transmission is carried out between the strain module and the to-be-tested component and between the strain module and the phase change module through direct contact, a conversion process from thermal parameters to force is not needed ...

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Номер записи: 5
11-07-2023 дата публикации

Big data automobile orbit determination system and method, electronic equipment and storage medium

Номер: CN116409344A
Автор: LU JUN, DONG HAOMIN, NAN HAI, YUE ZHENDONG, WANG JUNJUN, ZHANG LIANG, YIN BINGJIANG, WANG JINBIAO
Принадлежит:

The invention discloses a big data automobile orbit determination system and method, electronic equipment and a storage medium, and belongs to the technical field of automatic driving, the big data automobile orbit determination system comprises an intelligent driving module, a signal acquisition system, an automobile orbit determination system, a cloud big data management center, an orbit determination route simulation system and an orbit determination feedback system, the route acquisition module is used for acquiring the driving willingness of a current driver, acquiring a current initial route according to the driving willingness of the driver and sending the current initial route to the automobile orbit determination system; and the signal acquisition system is used for acquiring related road condition data of a working area of the automobile orbit determination system and sending the related road condition data to the automobile orbit determination system. According to the big data ...

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Номер записи: 6
04-07-2023 дата публикации

Method for connecting titanium-aluminum alloy charging turbine and steel shaft and titanium-aluminum alloy charging turbine

Номер: CN116372143A
Автор: HUANG DONG, JI ZHIJUN, HU HAITAO, ZUO JIABIN, HUANG HONG, ZHAO WENZHENG, SUN ZHIYU, NAN HAI
Принадлежит:

The invention discloses a connecting method for a titanium-aluminum alloy charging turbine and a steel shaft and the titanium-aluminum alloy charging turbine. The method comprises the following steps that a master alloy ingot is cast according to the required TiAl alloy composition proportion; a ceramic shell used for pouring the titanium-aluminum alloy charging turbine is prepared, and in the preparation process of the ceramic shell, a steel shaft for connection is embedded into the ceramic shell, so that the connecting part of the titanium-aluminum alloy charging turbine and the steel shaft is located in the ceramic shell; the ceramic shell and the steel shaft are integrally preheated; titanium-aluminum alloy liquid is poured into the ceramic shell, so that the titanium-aluminum alloy is tightly wrapped on the steel shaft, and connection of the titanium-aluminum alloy charging turbine and the steel shaft is completed; and the titanium-aluminum alloy charging turbine and the steel shaft ...

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Номер записи: 7
05-05-2023 дата публикации

Magnetic suspension battery fixing device, control method and vehicle

Номер: CN116061671A
Автор: LU JUN, LI LILI, DONG HAOMIN, SUN HUANLI, NAN HAI, YUE ZHENDONG, CHEN BEINA, YIN BINGJIANG, WANG JINBIAO
Принадлежит:

The invention relates to a magnetic suspension battery fixing device, a control method and a vehicle, the fixing device comprises a power battery, a vehicle body, a top end detector, a rear end door and a plurality of magnetic suspension mechanisms arranged around the power battery; the power battery is arranged below the vehicle body, and permanent magnets are arranged on the front portion, the rear portion, the bottom, the left portion and the right portion of the vehicle body. The top end detector is arranged at the bottom of the vehicle body and at the upper end of the power battery and used for detecting the position height of the power battery and sending height information to the control unit; the rear end door is composed of two parts, and the two parts can be controlled by the control unit to be separated, so that the power battery is pushed in from the outside; the multiple magnetic suspension mechanisms can form a closed space capable of containing a power battery, supply power ...

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Номер записи: 8
02-06-2023 дата публикации

Steering-by-wire automobile control system based on mobile phone simulation, control method and automobile

Номер: CN116198505A
Автор: LU JUN, LI LILI, WANG CHONG, NAN HAI, CHEN BEINA, YUE ZHENDONG, WANG JINBIAO, YIN BINGJIANG
Принадлежит:

The invention relates to a steering-by-wire automobile control system based on mobile phone simulation, a control method and an automobile. The system comprises an automobile provided with a signal acquisition module and a controller. The signal acquisition module acquires an environment vehicle condition signal of an automobile and reports the environment vehicle condition signal to the controller, the controller receives a signal of the navigation system and fits the signal with a signal of the signal acquisition module, and a novel universe vehicle is simulated; the system further comprises a mobile phone simulation system, a verification system, a steer-by-wire mechanism and an intelligent correction mechanism. The universe vehicles are completely mapped to a mobile phone simulation system according to 100%; the mobile phone simulates interaction with a driver and sends an automobile steering control signal to the verification system for automobile steering operation control; and the ...

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Номер записи: 9
02-05-2023 дата публикации

Engine rotating speed control method and device, vehicle and electronic device

Номер: CN116039607A
Автор: SHENG ZHENXING, YU CHANGHONG, ZHU HAO, ZHAO DONGFENG, NAN HAI, JU HAO, LU JUN, GONG JISHAN, LI LILI
Принадлежит:

The invention discloses an engine rotating speed control method and device, a vehicle and an electronic device, and relates to the technical field of vehicles. The method comprises the steps that the target rotating speed and the first execution torque of an engine of the vehicle are determined according to the running working condition of the vehicle; second execution torque of the generator of the vehicle is determined according to the current rotating speed and the target rotating speed of the engine, and the torque difference between the first execution torque and the second execution torque is used for adjusting the rotating speed of the engine; torque of the engine and torque of the generator are adjusted based on the first execution torque and the second execution torque. The technical problems that the maximum torque of a generator in the prior art is generally larger than the maximum torque of an engine, consequently, the power of the generator is large, the power of the generator ...

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Номер записи: 10
04-04-2023 дата публикации

BMS fault elimination system, battery assembly, electric vehicle and elimination method

Номер: CN115903740A
Автор: LU JUN, YU CHANGHONG, SUN HUANLI, LI LILI, NAN HAI, LIU YIXIN, SONG BOHAN, CHEN BEINA
Принадлежит:

The invention relates to the technical field of automobiles, in particular to a BMS fault removal system, a battery assembly, an electric vehicle and a removal method. The elimination system comprises a machine center, a matrix parent body, an architecture design center, a fault early warning center, a diagnosis center, a fault center, a system searching and killing center, a system architecture center, an antivirus center and a battery management system. The elimination method comprises the following steps: step 1, signal excitation; step 2, fault attack; step 3, fault processing; and step 4, feeding back and analyzing that the whole execution process accords with the battery safety fault management level, and if violation occurs, clearing all the steps and returning to signal excitation. According to the invention, the fault of the BMS can be eliminated, and the problems of insufficient fault discovery capability and insufficient system fault elimination capability of the system architecture ...

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Номер записи: 11
09-05-2023 дата публикации

Vehicle fault automatic identification system and method based on remote projection

Номер: CN116080671A
Автор: LU JUN, DONG HAOMIN, LI LILI, NAN HAI, CHEN BEINA, YIN BINGJIANG, YANG JINGBO, SONG BOHAN
Принадлежит:

The invention discloses an automatic vehicle fault recognition system and method based on remote projection, and belongs to the technical field of automobiles, and the system comprises an automobile, a VCU, a projection system, a forward mode module, a reverse mode module, an input parameter module, a projection calculation module, a fault early warning module, a judgment center module and a big data center module. A VCU is arranged in an automobile, the VCU is used for collecting physical signals of the automobile, a projection system is arranged in the VCU and comprises a forward mode module and a reverse mode module, signals collected by the forward mode module and the reverse mode module are sent to an input parameter module, the input parameter module outputs the collected signals to a projection calculation module, and the projection calculation module is used for calculating the physical signals of the automobile. The projection calculation module sends calculation result signals ...

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Номер записи: 12
16-05-2023 дата публикации

Method for analyzing shrinkage size of workpiece

Номер: CN116129078A
Автор: ZHU MENGXIU, NAN HAI, SHI YUELIANG, LI XUESONG
Принадлежит:

The invention discloses a method for analyzing the shrinkage size of a workpiece, which belongs to the field of precision casting and comprises the following steps: acquiring point cloud data of the workpiece by using blue light scanning equipment; establishing a local coordinate system on the original mathematical model and the point cloud by using the same reference elements according to the product features; local optimum fitting is carried out on product contour sub-regions; after the curved surfaces are compared, the shape and size variation of the corresponding area are obtained through up-down deviation and modes; according to the deviation values of the six degrees of freedom of the point cloud local reference coordinate system, obtaining the position of the corresponding analysis area and the variable quantity of the variable direction; and the accurate size change of the different areas of the product can be obtained by integrating the variation of the shapes, sizes, positions ...

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Номер записи: 13
30-06-2023 дата публикации

Assistant decision-making method and system for injury control resuscitation

Номер: CN116364293A
Автор: ZONG ZHAOWEN, YANG HAOYANG, DU WENQIONG, NAN HAI, CHEN LIN, MA YUNFEI, ZHONG XIN, JIA YIJUN, JIANG RENQING, CHEN CAN, KANG NA, XUE ZHIJIAN
Принадлежит:

The invention discloses an auxiliary decision-making method and system for injury control resuscitation, and relates to the technical field of decision making, and the method comprises the steps: constructing an auxiliary decision-making model; the auxiliary decision-making model comprises a text auxiliary decision-making model, an image auxiliary decision-making model and an index auxiliary decision-making model; acquiring injury condition data; the injury condition data comprises text data, image data and index data; based on the text data and the text aided decision-making model, obtaining a text aided decision-making result; based on the image data and the image aided decision-making model, obtaining an image aided decision-making result; based on the index data and the index auxiliary decision-making model, obtaining an index auxiliary decision-making result; and constructing an auxiliary decision-making scheme based on the text auxiliary decision-making result, the image auxiliary ...

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Номер записи: 14
11-08-2023 дата публикации

Vehicle driving route determination method and device and vehicle

Номер: CN116578077A
Автор: LU JUN, DONG HAOMIN, NAN HAI, SUN HUANLI, YUE ZHENDONG, YIN BINGJIANG, ZHANG LIANG, SONG BOHAN
Принадлежит:

The invention discloses a vehicle driving route determination method and device and a vehicle. The method comprises the steps that driving demand data of at least one vehicle are acquired, and the driving demand data are used for representing the driving demand of a target object for the corresponding vehicle; determining a candidate driving route of the corresponding vehicle based on the driving demand data; based on road condition data of roads where the candidate driving routes of the at least one vehicle at the same moment are located, simulation testing is conducted on the candidate driving routes of the at least one vehicle at the same moment, a testing result is obtained, and the road condition data comprise vehicle condition data of the at least one vehicle at the same moment; and in response to the test result that the road condition of the road where the candidate driving route of the at least one vehicle is located at the same moment is safe, the candidate driving route is determined ...

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Номер записи: 15
30-06-2023 дата публикации

TiAl alloy single crystal based on self-seed crystal method and preparation method thereof

Номер: CN116356424A
Автор: DING XIANFEI, LIU HAN, HUANG HONG, ZONG XIAO, HU HAITAO, NAN HAI
Принадлежит:

The invention provides a preparation method of a TiAl alloy single crystal based on a self-seed crystal method. The preparation method sequentially comprises the steps of mother alloy cast ingot preparation, mold shell preparation, seed crystal preparation, seed crystal assembly, mother alloy remelting, single crystal growth and single crystal directional solidification. The invention further provides the TiAl alloy single crystal with specific components. The preparation method of the TiAl alloy single crystal provided by the invention can be used for enhancing the high-temperature mechanical property of a directional solidification structural part of a titanium-aluminum alloy, can promote the research on controlling the orientation of a lamella in the directional solidification process, and has important guiding significance on research, development and production of the directional solidification part with a complex structure.

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Номер записи: 16
07-04-2023 дата публикации

Surface grinding machine capable of recycling cooling liquid

Номер: CN115922568A
Автор: CHOI EUN-HO, NAN HAI, ZHAO CHIMING
Принадлежит:

The surface grinding machine capable of recycling the cooling liquid relates to the field of grinding machining equipment and comprises a working platform, the lower surface of the working platform is fixedly connected with a liquid storage tank used for storing the cooling liquid, and the upper surface of the working platform is provided with a backflow opening communicating with the liquid storage tank; the upper surface of the working platform inclines towards the direction close to the backflow port, a first-stage filtering assembly and a second-stage filtering assembly which are arranged up and down are installed in the liquid storage box, the first-stage filtering assembly comprises a filtering drawing box with an opening in the upper surface, a bottom plate of the filtering drawing box is a screen plate, and the second-stage filtering assembly comprises a supporting box with openings in the upper surface and the lower surface. And filter cloth is mounted in the supporting box. The ...

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Номер записи: 17
15-08-2023 дата публикации

Optical fiber distribution socket identification method, system and equipment based on color space fusion

Номер: CN116597172A
Автор: YE QILANG, NAN HAI, WANG AIJUAN, BAI LING, XIAO ZHAOHUI
Принадлежит:

The invention discloses an optical fiber distribution socket identification method, system and device based on color space fusion, and relates to the field of computer vision and optical fiber distribution socket identification, and the method comprises the steps: processing a target optical fiber distribution box picture, and obtaining a plurality of first target regions corresponding to the target optical fiber distribution box picture; the first target area is an area where a red fiber insertion dustproof cap may exist; inputting each first target area into a pre-trained color space fusion network to obtain a plurality of second target areas; the second target area is an area with a red fiber insertion dustproof cap; calculating the Euclidean distance of each second target area relative to other second target areas through a Minkowski distance formula; performing hierarchical clustering on each second target region according to the Euclidean distance to obtain a clustering result region ...

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Номер записи: 18
02-06-2023 дата публикации

Forming method of titanium-aluminum alloy complex component

Номер: CN116197361A
Автор: HUANG DONG, ZUO JIABIN, HU HAITAO, HUANG HONG, ZHAO WENZHENG, SUN ZHIYU, NAN HAI
Принадлежит:

The invention discloses a forming method of a titanium-aluminum alloy complex component. The forming method comprises the following steps that a graphite shell and a graphite pouring cup are manufactured; the surface of an inner cavity of the graphite shell and the surface of an inner cavity of the graphite pouring cup are coated with high-temperature-resistant ceramic coatings correspondingly; the graphite shell and the graphite pouring cup are subjected to vacuum degassing treatment; a titanium-aluminum alloy material is put into a graphite pouring cup above the graphite shell; the graphite shell, the graphite pouring cup and the titanium-aluminum alloy material in the graphite pouring cup are integrally put into a crucible in a vacuum induction melting furnace to be subjected to gas washing treatment; the vacuum induction melting furnace is started for heating, and pouring mold filling of the titanium-aluminum alloy material is accompanied in the heating process; the graphite shell, ...

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Номер записи: 19
16-05-2023 дата публикации

Intelligent driving system based on brain waves, control method and vehicle

Номер: CN116118735A
Автор: LU JUN, LI LILI, SUN HUANLI, WANG CHONG, NAN HAI, YUE ZHENDONG, CHEN BEINA, SUN SHIJIE
Принадлежит:

The invention relates to an intelligent driving system based on brain waves, a control method and a vehicle, and the intelligent driving system comprises an automobile with a steering-by-wire mechanism as a control system; the automobile is provided with an intelligent driving system in control connection with the steering-by-wire mechanism, and the intelligent driving system can control steering and driving of the steering-by-wire mechanism. The system further comprises a brain wave compiler, a verification system, a big data remote monitoring mechanism, an authorized action mechanism and a function safety mechanism. The verification system receives the driving signal compiled by the brain wave compiler and transmits the driving signal to the authorized action mechanism; the big data remote monitoring mechanism remotely monitors the brain wave compiler and the authorized action mechanism; the function safety mechanism can monitor the operation states of all the modules, and once an abnormal ...

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Номер записи: 20
02-06-2023 дата публикации

Thin-wall graphite shell for manufacturing titanium and titanium alloy castings and preparation method of thin-wall graphite shell

Номер: CN116197356A
Автор: HUANG DONG, HU HAITAO, ZUO JIABIN, HUANG HONG, JI ZHIJUN, ZHAO WENZHENG, NAN HAI
Принадлежит:

The invention discloses a thin-wall graphite shell for manufacturing titanium and titanium alloy castings and a preparation method of the thin-wall graphite shell, the thin-wall graphite shell comprises an inner mold and an outer mold, a cavity is formed between the inner mold and the outer mold, and the shell formed by the inner mold and the outer mold is of a thin-wall random structure. The preparation method comprises the following steps: designing the structure and the wall thickness of a thin-wall graphite shell; manufacturing a thin-wall graphite shell assembly by adopting a machining method; the thin-wall graphite shell assembly is subjected to vacuum degassing treatment; the thin-wall graphite shell assembly is assembled; carrying out preheating treatment on the whole thin-wall graphite shell; the whole thin-wall graphite shell is put into a vacuum consumable electric arc furnace or a vacuum induction furnace, and then titanium and titanium alloy pouring and mold filling are conducted ...

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Номер записи: 21
04-04-2023 дата публикации

Battery box body explosion-proof valve and control method thereof, battery assembly and electric vehicle

Номер: CN115911742A
Автор: WANG DEPING, LU JUN, YU CHANGHONG, SUN HUANLI, LI LILI, NAN HAI, CHEN BEINA, WANG JINBIAO, SONG BOHAN
Принадлежит:

The invention relates to a battery box body explosion-proof valve and a control method thereof, a battery assembly, an electric vehicle and an electromagnetic explosion-proof valve. The electromagnetic explosion-proof valve mainly comprises a discharge pipe, a pressure acquisition pipe, a gas absorption pipe, a plate passing structure, a gas cut-off structure and an electromagnetic regulator, the electromagnetic explosion-proof valve is connected with the BMS and can receive a signal instruction of the battery BMS to control the electromagnetic regulator; the electromagnetic explosion-proof valve is powered by a low-voltage wire harness of the battery assembly; the gas cut-off structure is a pressure threshold opening protection structure; the pressure acquisition tube is connected with the BMS and can acquire the pressure in the battery pack and feed back signals to the BMS, the time interval of pressure signal acquisition of the pressure acquisition tube is 0.5 s, and the action time ...

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Номер записи: 22
27-06-2023 дата публикации

Preparation method of high-entropy alloy directional solidification component

Номер: CN116329525A
Автор: ZONG XIAO, DING XIANFEI, ZHANG QIANG, HUANG HONG, FENG XIN, NAN HAI
Принадлежит:

The invention relates to the technical field of alloy manufacturing, in particular to a preparation method of a high-entropy alloy directional solidification component. The preparation method of the high-entropy alloy directional solidification component comprises the following steps: (1) mixing raw material powder for preparing the high-entropy alloy directional solidification component to obtain a mixture, and putting the mixture into a casting mold; and (2) directional solidification is conducted, and the high-entropy alloy directional solidification component is obtained. Compared with the prior art, the preparation method has the advantages that the directional solidification technological process is greatly shortened, the manufacturing period is shortened, the energy consumption is reduced, and meanwhile, the uniformity of the prepared directional solidification component is good.

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Номер записи: 23
07-04-2023 дата публикации

Titanium-zirconium alloy casting and precision casting forming method thereof

Номер: CN115921784A
Автор: ZHANG NING, JI ZHIJUN, ZHANG JIANHUI, ZHAO YIQUN, NAN HAI
Принадлежит:

The invention belongs to the technical field of titanium-zirconium alloy precision casting, and particularly relates to a titanium-zirconium alloy casting and a precision casting forming method thereof.The method sequentially comprises the following steps of wax mold preparation, shell preparation, dewaxing roasting, smelting pouring and aftertreatment. Wherein the shell preparation comprises the following steps: preparing a surface layer shell, namely coating the surface layer slurry on the surface of a wax mold, spraying sand on the surface layer of the wax mold, and drying to form the surface layer shell; the surface layer slurry contains yttrium oxide powder; a back layer shell is prepared, specifically, the surface of the surface layer shell is coated with back layer slurry, and back layer sand spraying and drying are conducted on the surface layer shell; repeating the back layer shell preparation step for multiple times to form a back layer shell; the smelting and pouring step comprises ...

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Номер записи: 24
11-04-2023 дата публикации

Preparation method of molding sand for titanium alloy sand mold casting and selective laser sintering forming method of composite sand mold/core of molding sand

Номер: CN115945641A
Автор: XIAO QIANGWEI, LI SHEN, NAN HAI, ZHANG SHOUYIN, FAN SHIXI, XU ZHIFENG, SUN CHU, LEE JUNG-HOON
Принадлежит:

The invention discloses preparation of molding sand for titanium alloy sand mold casting and a selective laser sintering forming method of a composite sand mold/core of the molding sand, and adopts a process thought of preparing an organic binder and inorganic binder type sand material, and the inorganic binder, a processing aid, a sintering aid and an additive are added into a 3D printed molding sand material; through low-temperature and high-temperature sand burying roasting, a sand mold/core suitable for titanium alloy casting is rapidly prepared without a mold; the sand mold/core prepared through the method has the advantages of being excellent in high-temperature strength, low in gas-forming property, high in size precision, free of cracking, stable in inert coating, high in production efficiency, low in cost, safe and the like, and therefore casting of the titanium alloy sand mold of a complex structure is achieved.

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Номер записи: 25