Multifunctional integrated part and method for preparing same

A multifunctional, part technology, applied in the field of additive manufacturing, which can solve the problems of inability to customize local performance, complex structure, and inability to use, and achieve the effect of easy operation, obvious effect, and high-quality overall forming.

Active Publication Date: 2022-01-25
AECC SHANGHAI COMML AIRCRAFT ENGINE MFG CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design of new engine parts is becoming more and more compact, and the structure is becoming more and more complex, which can no longer be realized by traditional machining and welding processes. The mainstream laser selective melting equipment can realize the overall manufacturing of complex configurations, but cannot customize local performance

Method used

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  • Multifunctional integrated part and method for preparing same
  • Multifunctional integrated part and method for preparing same
  • Multifunctional integrated part and method for preparing same

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Embodiment Construction

[0022] Selective Laser Melting (SLM) is considered to be one of the most potential metal additive manufacturing technologies. SLM technology mainly uses high-power or high-brightness laser as a heat source to melt metal powder layer by layer to directly manufacture parts with complex shapes. SLM technology uses a laser beam with a finely focused spot as the forming energy source, a high-speed and high-precision scanning galvanometer as the processing beam control unit, and adopts thinner layer thickness control technology. SLM technology has more advantages in obtaining high-density and high-precision formed parts. , can complete the direct forming of complex cavity, profile, thin wall and variable cross-section parts, such as aero-engine pre-swirl nozzles, fuel nozzles, turbine blades and other parts.

[0023] In view of the problem that the local performance of a single part cannot be customized in the existing part manufacturing process, the following embodiments provide a ...

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Abstract

The invention provides a multifunctional integrated part and a method for preparing same. According to the method, a cobalt-chromium alloy or 0Cr16Ni4Cu3Nb powder material is used for executing a forming process of the part in a selective laser melting forming system; in the forming process, mixed gas of nitrogen and argon serves as protective atmosphere, printing partition is conducted on the part according to the service condition of the part, the protective atmosphere with different nitrogen concentrations is provided and designed according to different printing partitions, in at least one printing partition, and nitrogen permeates into a molten pool and chemically reacts with molten metal to control the element N of the part to be increased in the printing partition, so that the gamma phase of the part is inhibited from being converted into other phases in the printing process.

Description

【Technical field】 [0001] The invention relates to the technical field related to additive manufacturing, in particular to a laser selective melting forming system, a multifunctional integrated part and a preparation method thereof. 【Background technique】 [0002] At present, the mainstream laser selective melting equipment on the market uses a single material to print parts. The parts are closely combined, such as the wall of the combustion chamber of the space shuttle burning ramjet engine, the side contacting thousands of degrees of high-temperature gas is made of ceramics, and the side contacting cooling hydrogen is made of metal, so that the whole part has good heat resistance and high mechanical strength new features. Therefore, multifunctional integrated parts with excellent performance have extremely high application value and research prospects. [0003] Advanced aero-engine pre-rotating nozzles, fuel nozzles, turbine blades and other parts have different service c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F10/28B22F10/32B22F10/85B22F5/10B22F5/04B33Y10/00B33Y50/02B33Y80/00B33Y70/00
CPCB22F3/1039B22F3/101B22F5/10B22F5/04B33Y10/00B33Y50/02B33Y80/00B33Y70/00B22F2999/00Y02P10/25
Inventor 郑寅岚雷力明常斐陈晓晖何艳丽
Owner AECC SHANGHAI COMML AIRCRAFT ENGINE MFG CO LTD
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