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A method for growing complex structures on the surface of castings and forgings based on wire 3D printing

A 3D printing and surface growth technology, applied in the direction of additive processing, process efficiency improvement, additive manufacturing, etc., can solve the problems of low material utilization rate, low finished product qualification rate, long production cycle, etc., and achieve high material utilization rate, The effect of large part size range and short production cycle

Active Publication Date: 2021-01-22
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that a single manufacturing method causes coarse structure and concentrated stress; low material utilization rate and high cost; long production cycle; low qualified rate of finished products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Using 316L stainless steel rod-shaped castings as blanks, the base structural parts are prepared by machining, and the base structural parts are subjected to a heat treatment process of 850 ° C ~ 985 ° C / 0.5 h ~ 2 h / oil cooling or air cooling. Then, the structure and composition of the matrix structural parts are determined through composition and structure detection. Then use high-precision three-dimensional scanning or three-coordinate machine to scan the matrix structure, and form the matrix structure model through data processing software such as GomInspect. Using Cero / ProE, UG or other 3D model design software, based on the matrix structure model, carry out the required complex structure design on it, and finally synthesize an integrated 3D model. Use Magics or other software to perform two-dimensional slicing processing on the three-dimensional model, that is, to divide the model data into a series of two-dimensional data along the Z-axis direction according t...

Embodiment 2

[0032] The cake-shaped casting made of TC4 titanium alloy is used as the blank, and the base structure is prepared by machining, and the base structure is subjected to a heat treatment process of 900°C~985°C / 0.5h~2.5h / oil cooling or air cooling. Then, the structure and composition of the matrix structural parts are determined through composition and structure detection. Then use high-precision three-dimensional scanning or three-coordinate machine to scan the matrix structure, and form the matrix structure model through data processing software such as GomInspect. Using Cero / ProE, UG or other 3D model design software, based on the matrix structure model, carry out the required complex structure design on it, and finally synthesize an integrated 3D model. Use Magics or other software to perform two-dimensional slicing processing on the three-dimensional model, that is, to divide the model data into a series of two-dimensional data along the Z-axis direction according to equal l...

Embodiment 3

[0034]The square casting made of Inconel625 nickel-based alloy is used as the blank, and the base structure is prepared by machining, and the base structure is subjected to a heat treatment process of 780°C~1080°C / 0.5h~3.5h / oil cooling or air cooling. Then, the structure and composition of the matrix structural parts are determined through composition and structure detection. Then use high-precision three-dimensional scanning or three-coordinate machine to scan the matrix structure, and form the matrix structure model through data processing software such as GomInspect. Using Cero / ProE, UG or other 3D model design software, based on the matrix structure model, carry out the required complex structure design on it, and finally synthesize an integrated 3D model. Use the high-energy arc 3D printing platform to start additive manufacturing processing on the base material according to the processing path described. The wire is made of nickel-based Inconel625, and the diameter of t...

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Abstract

The invention relates to a method for growing complex structures on the surface of castings and forgings based on wire 3D printing, comprising the following steps: a. preparing a base structure; b. performing three-dimensional scanning or three-coordinate machine modeling on the base structure to obtain the base Structural part model; c. Perform structural design on the surface of the matrix structural part model to obtain the 3D model of the final part; d. Carry out two-dimensional slice processing of the 3D model, import the obtained parameters into the 3D printer, and import the material of the same matrix structural part The same filament is ready for printing; e. Place the base structure in the 3D printer, and perform additive manufacturing on the surface of the base structure. In this method, a complex structure is generated on the surface of the base structural part by a 3D printer. At the same time, the material of the wire material and the base structural part is the same, so that the printed complex parts and the base structural part are metallurgically bonded and tightly connected, and the coarse structure and stress of the casting are avoided. Concentration and low material utilization caused by forgings and machining.

Description

technical field [0001] The invention relates to a method for growing complex structures on the surface of castings and forgings based on wire 3D printing, and belongs to the technical field of metal forming and manufacturing. Background technique [0002] At present, there are four commonly used methods for the industrial production of parts with complex shapes and structures: 1. Using precision casting to prepare complex precision castings; 2. Using forged blanks to remove materials through mechanical processing to obtain the final Parts; 3. By powder metallurgy, the powder is put into the mold and manufactured by high-temperature sintering; 4. Using additive manufacturing technology, it is processed by 3D printing platform. However, the above methods are not applicable to large parts and parts with complex structures on the inner wall or outside, and there are the following problems: 1. Precision castings will cause the parts to have coarse structures, stress concentration...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B22F7/08B33Y10/00
CPCB22F7/08B33Y10/00B22F10/00B22F10/36B22F10/68B22F10/25B22F10/64Y02P10/25
Inventor 卢东黄云钟兵吴旺
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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