Method for quick additive manufacturing of large-scale bimetal spare parts

A technology for additive manufacturing and metal parts, which is applied in the field of rapid additive manufacturing of large parts and the preparation of new metal parts, which can solve the problems of unsuitable printing accuracy and slow printing speed.

Active Publication Date: 2019-05-17
上海汉邦联航激光科技有限公司
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Problems solved by technology

[0004] Chinese patent CN201611115889.3 proposes a method of powder metallurgy forming functionally graded materials based on selective laser melting, but this method does not introduce technology that can increase the printing speed, so the printing speed is relatively slow
[0007] Chinese patents CN201720730439.9, CN201610458932.X, CN20161045893

Method used

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  • Method for quick additive manufacturing of large-scale bimetal spare parts
  • Method for quick additive manufacturing of large-scale bimetal spare parts

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preparation example Construction

[0032] The process of the preparation method of the present invention is as follows:

[0033] S1. In a sealed chamber, use the Selective Laser Melting (SLM) process to print the bottom and side walls of the bottom contour of the metal part on a stainless steel metal substrate, and the bottom and sides of the printed contour The wall thickness is controlled between 0.5mm-5mm, and the height of the printed outer contour is controlled between 5-20mm.

[0034] S2. After the printing is completed, use the powder suction device 9 in the working chamber 1 to suck away the metal powder within the outer contour of the bottom.

[0035] S3. Use a plasma arc additive process to fill the inner space of the outer contour 4 with a metal material 10, and the top surface of the filled metal material 10 is slightly lower than the top surface of the outer contour. Among them, the height of the filled metal material 10 is controlled between 1.5-9mm, and the height difference between the metal material ...

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Abstract

The invention provides a method for quick additive manufacturing of large-scale bimetal spare parts. The technological process of the method mainly comprises the following steps of respectively usinga selecting region laser melting shaping technique and a plasma arc additive manufacturing technique to print an outermost layer and an internal structure of a spare part: after the outermost layer structure in a current circulation is printed through the selecting region laser melting shaping, sucking metal powder in the outline of the outermost layer with an internal powder sucking machine, thenprinting and stuffing the internal structure through plasma arc additive manufacturing, and continuing circulating until printing of the spare part is completed. The method disclosed by the inventionhas the beneficial effects of having the capacity of quickly printing large-scale complex-shape spare parts, having the capacity of quickly printing large-scale spare parts which are high in surfaceaccuracy requirements, and having the capacity of printing multi-material spare parts of which the outermost layer materials and the internal materials are different.

Description

Technical field [0001] The invention relates to a method for preparing a new type of metal parts, in particular to a rapid additive manufacturing method for large parts that combines a plasma arc additive process and a selective laser melting forming process, and belongs to the field of metal materials. Background technique [0002] Selective laser melting molding technology is a high-precision metal additive manufacturing method. The printed samples have a smooth surface and fine structure, but the printing speed is very slow, and it is difficult to print large parts efficiently, and it is difficult to print parts composed of multiple materials. [0003] Plasma arc additive manufacturing technology is an efficient metal additive manufacturing method, but the printing accuracy is lower than that of selective laser melting forming technology. It is suitable for printing finished or blank parts with larger size but lower accuracy requirements. [0004] Chinese patent CN201611115889.3 p...

Claims

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Application Information

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IPC IPC(8): B22F3/105B22F3/24B23K10/02B33Y10/00B33Y70/00
CPCY02P10/25
Inventor 张超群刘建业毛丽乐心怡柴芊芊王序杨培轩徐金涛王良龙马义柏威·尼亚迪穆罕默德·哈里斯·扎赫尔姜星辰何家鹏易俊杰
Owner 上海汉邦联航激光科技有限公司
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