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Surface molding metal material additive manufacturing method

A metal additive and manufacturing method technology, applied in the field of metal additive manufacturing, can solve problems such as uneven temperature field distribution, warpage and fracture of molded parts, and achieve improved manufacturing efficiency, high controllability, and surface array forming process. simple effect

Active Publication Date: 2019-11-12
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0005] In order to overcome the disadvantages of uneven temperature field distribution and large temperature gradient caused by existing wire forming in metal additive manufacturing, the present invention proposes a metal laser additive manufacturing method for surface forming, which can be used in Improve the efficiency of additive manufacturing on the basis of solving the above problems, so as to improve the temperature field distribution and temperature gradient during the part forming process while improving manufacturing efficiency

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] refer to Figure 1 to Figure 6 , a surface forming metal additive manufacturing method, comprising the following steps:

[0030] 1) Parameter setting: Compared with the parameter setting of traditional metal additive manufacturing, the present invention needs to perform parameters related to laser beam control. According to the molding requirements, the number m of laser beams in the x direction and the number n of laser beams in the y direction should be set first; secondly, the spot size of the original laser beam should be set according to the precision and shape of the molded part to control the beam splitting The spot size of the laser; finally, the appropriate laser power, linear energy density, scanning speed and other parameters should be set according to different molding materials.

[0031] 2) Slicing processing: import the printable CAD model of the...

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Abstract

The invention provides a surface molding metal material additive manufacturing method. The surface molding metal material additive manufacturing method comprises the following steps of (1) parameter setting; (2) slicing treatment; (3) laser beam splitting in the x-direction; (4) laser beam splitting in the Y-direction; (5) shading; and (6) part molding. Through the surface molding metal material additive manufacturing method, the heating mechanism of parts in the molding process is improved, the temperature field of the parts is distributed more evenly, the temperature gradient is reduced, andgeneration of warping and fracture defects of the molded parts due to heat stress and heat deformation is reduced. Compared with a traditional laser dot matrix scanning from-point-to-plane and layer-by-layer stacking molding method, a layer of the cross section of each part can be directly molded through area array molding, and then the part is subjected to stacking molding layer by layer. Thus,the area array molding process is simpler, and the metal material additive manufacturing efficiency can be improved.

Description

technical field [0001] The present invention relates to the field of metal additive manufacturing, and more specifically, to a surface forming method for metal additive manufacturing. Background technique [0002] Additive manufacturing technology (also known as 3D printing technology) is a new manufacturing technology that has developed rapidly in recent years. Compared with traditional manufacturing technology, it has significant advantages in terms of high flexibility, high degree of digitalization and informatization, and high degree of personalization. At present, there are many types of additive manufacturing technologies according to different processing materials and energy sources. Among them, metal additive manufacturing technology represented by SLM technology has been widely used in aerospace, automobile, medical equipment and other fields. The most widely used energy source in metal additive manufacturing is the laser. The forming process forms a spot for the l...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y10/00
CPCB33Y10/00B22F10/00B22F10/85B22F10/80Y02P10/25
Inventor 董星涛姜献峰张滨斌唐展陈宾宾
Owner ZHEJIANG UNIV OF TECH
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