Additive and subtractive manufacturing based metal part repair method

A metal parts and repair method technology, applied in the field of metal parts repair, can solve problems such as low material utilization rate, achieve the effects of high material utilization rate, solve interference problems, and avoid error accumulation

Active Publication Date: 2017-08-29
西安博恩生物科技有限公司
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Problems solved by technology

[0007] In order to overcome the deficiency of low material utilization rate of existing metal parts repairing methods, the present invention provides a metal parts repairing method based on additive and subtractive material manufacturing
The invention avoids the error accumulation caused b

Method used

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Embodiment Construction

[0028] The specific steps of the method for repairing metal parts based on additive and subtractive material manufacturing in the present invention are as follows:

[0029] The TC4 titanium alloy part is repaired. The size of the TC4 titanium alloy part is 300mm×200mm×200mm, and the size of the damaged part is 50mm×40mm×50mm.

[0030] Step 1. Grinding the surface of the TC4 titanium alloy parts to remove the oxide film, cleaning with acetone, drying, and vacuumizing the forming chamber to make the vacuum degree reach 10 -3 Pa level;

[0031] Step 2. Clamp the damaged TC4 titanium alloy parts processed in step 1 and fix them on the increase and decrease material fixing mechanism of the workbench in the vacuum chamber;

[0032] Step 3: Use non-destructive scanning technology to scan the damaged TC4 part to determine the boundary of the damaged part, and establish a cutting model on the computer and plan the cutting path.

[0033] Step 4: The drive rod of the sliding table driv...

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Abstract

The invention discloses an additive and subtractive manufacturing based metal part repair method. The additive and subtractive manufacturing based metal part repair method is used for solving the technical problem of the low material utilization rate of an existing metal part repair method. According to the technical scheme, firstly, after to-be-repaired model three-dimensional data are obtained through three-dimensional scanning, subtractive machining is carried out on the worn part of a part, that is, the part is worn through dry high-speed cutting, and a regular surface is obtained; and then additive manufacturing is carried out through an electron beam fuse wire additive process, the deposition additive repair process of the part is completed, meanwhile, the part surface is machined through dry high-speed cutting machining, and a repair part with high surface quality is obtained. According to the additive and subtractive manufacturing based metal part repair method, error accumulation brought by workpiece clamping, taking and placing during original multi-platform machining is avoided, meanwhile, the interference problem happening in the subtractive process of parts of complex structures is solved, and the mechanical performance of the damaged part achieves the level of normal parts. According to the method, the repair process is carried out in a vacuum environment, workpiece clamping only needs to be carried out once, and the material utilization rate is high.

Description

technical field [0001] The invention relates to a method for repairing metal parts, in particular to a method for repairing metal parts based on additive and subtractive material manufacturing. Background technique [0002] With the development of aerospace technology and the improvement of space station construction speed, it is necessary to improve the rocket carrying capacity. The new generation of high-thrust liquid oxygen kerosene rocket engine is the core component of the entire rocket manufacturing, and the turbo pump blisk is the key component. The working environment of the turbine pump blisk is extremely harsh. In addition, the traditional processing method usually adopts precision casting combined with manual polishing, which has low processing efficiency and poor surface quality consistency. Cracks, wear and corrosion pits occur during service, resulting in Very serious accident. Part restoration work is especially important in the aviation sector. [0003] In ...

Claims

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Application Information

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IPC IPC(8): B23P6/04B23K15/00B23K15/06
Inventor 汪焰恩张坤魏庆华杨明明柴卫红李欣培王淑志车煜
Owner 西安博恩生物科技有限公司
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