TC4 titanium alloy multi-channel valve body laser selective area melting forming method

Abstract

The invention discloses a TC4 titanium alloy multi-channel valve body laser selective area melting forming method. A multi-channel valve body three-dimensional model is established, manufacturabilitycompensation is added, and the size precision and the shape precision are improved; meanwhile, the valve body character and a complex stress and strain environment formed in the valve body in the forming process are aimed, a stress/strain simulation result is utilized, and the forming direction is determined, a specially-made process support is arranged, alleviating the stress concentration phenomenon is optimized, and machining parameters with the minimum stress strain are selected; and then laser scanning path data of each slice layer are obtained by means of slicing software, and laser selective area melting forming is carried out according to the scanning path data; and finally, after the valve body removes floating powder and is subjected to thermal stress treatment, a substrate plateof the valve body is separated, and the problem that the size precision of the forming valve body is low by utilizing the laser selective area melting forming technology is solved.

Description

technical field [0001] The invention relates to a TC4 titanium alloy multi-channel valve body laser selective melting forming method, which belongs to the technical field of metal forming. Background technique [0002] The multi-channel valve body is a part with an integrated design of structure and function. It can effectively control a variety of media materials in a small space. It is a key part of precision control units in aerospace, electronic communication and other fields. It is related to the control system. overall pros and cons. Depending on the different application occasions, the material for manufacturing multi-channel valve body can be plastic, iron, steel and titanium alloy, etc. Among them, the multi-channel valve body made of TC4 titanium alloy has the broadest application prospect. At present, the main methods of using TC4 titanium alloy to manufacture multi-channel valve bodies are casting + machining, forging + machining, and there are problems such as ...

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Problems solved by technology

[0004] The technical problem solved by the present invention is: Aiming at the problems in the current prior art that the quality of the traditional manufacturing process is difficult to control, the manufacturing cycle is long, the utilization rate of materials is low, and the deformation and cracking of the valve body caused by thermal stress cannot be solved, a TC4 titanium alloy is proposed. Laser selective melting forming method for alloy multi-channel valve body

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