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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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Применить Всего найдено 3. Отображено 3.
21-04-2023 дата публикации

Self-adaptive powder spreading system and method for improving additive manufacturing forming precision

Номер: CN115990673A
Автор: CHEN WEI, LI HUAIXUE, XING YISI, YANG YANG, LIN BOCHAO, WU FAN
Принадлежит:

The invention relates to a self-adaptive powder laying system and method for improving the forming precision of additive manufacturing, and the forming method comprises the steps: setting an initial powder laying height and initial high-energy laser or electron beam parameters, setting the initial position of a forming substrate based on the focal position and the powder laying height of the laser or electron beam, and setting the initial position of the forming substrate at the beginning of a first processing period, the forming base plate is moved to the initial position, high-degree forming material powder is laid on the forming base plate and is melted, solidified, stacked and formed, and the height of a formed part is collected and fed back to a control unit; at the beginning of the Xth forming processing cycle, after the forming substrate is controlled to descend by a certain height, powder with the actual height is laid on the forming substrate, data are collected in real time, the ...

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Номер записи: 1
09-05-2023 дата публикации

Electron beam selective melting additive manufacturing method and equipment for TiAl-Ti2AlNb gradient material

Номер: CN116079071A
Автор: CHEN WEI, YANG YANG, LIN BOCHAO, WU FAN, XING YISI, FU PENGFEI
Принадлежит:

The invention relates to an electron beam selective melting additive manufacturing method and equipment for a TiAl-Ti2AlNb gradient material, and a forming method at least comprises the following steps: dividing a part structure into a TiAl region and a Ti2AlNb region according to gradient regions, and setting a forming process sequence and corresponding parameters of the TiAl region and the Ti2AlNb region according to structural characteristics and material characteristics; the method comprises the following steps: respectively filling powder of TiAl and Ti2AlNb materials into two independent powder cylinders in a forming cabin; according to a set process sequence and corresponding parameters, Ti2AlNb powder and TiAl powder are subjected to layer-by-layer powder laying, melting, solidifying, stacking and forming, and when the Ti2AlNb powder is subjected to powder laying and melting forming processes, a recycling unit of the Ti2AlNb powder is in a closed state, and a recycling unit of the ...

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Номер записи: 2
28-04-2023 дата публикации

High-strength TiAl alloy with tensile strength larger than 750 MPa and additive manufacturing method of high-strength TiAl alloy

Номер: CN116024457A
Автор: CHEN WEI, YANG YANG, TANG BIN, LIN BOCHAO, FU PENGFEI
Принадлежит:

The invention relates to a high-strength TiAl alloy with the tensile strength larger than 750 MPa and an additive manufacturing method of the high-strength TiAl alloy with the tensile strength larger than 750 MPa. The powder component of the high-strength TiAl alloy with the tensile strength larger than 750 MPa is Ti-47.5 Al-6.8 Nb-0.2 W, and the high-strength TiAl alloy with the tensile strength larger than 750 MPa comprises, by weight, 30.96% of aluminum, 16.02% of niobium, 0.94% of tungsten, 0.02% of iron, 0.0055% of carbon, 0.0158% of nitrogen, 0.0021% of hydrogen and the balance titanium and inevitable impurity elements. By adjusting the content of element components, the high-strength TiAl alloy component scheme designed for the EBM process is Ti-47. 5Al-6.8 Nb-0.2 W; compared with a TNM alloy, the high-content Al (47.5 at.%) ensures that peritectic solidification of the alloy occurs to avoid formation of a texture, so that the room-temperature plasticity is improved; compared with ...

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Номер записи: 3