Laser selected area fusion forming method for weldless metal dot matrix component

Abstract

The invention discloses a laser selected area fusion forming method for a weldless metal dot matrix component. The method includes the following steps that a three-dimensional entity model of the weldless metal dot matrix components is established; slicing treatment is conducted, and the cross section messages of all layers of slices are obtained; a scanning path is generated according to the cross section messages of all the layers; a base plate and metal powder are placed into laser selected area fusion forming equipment, and atmosphere protection is conducted on a forming cavity; a first entity slice layer is prepared; a forming cylinder descends by a layer thickness, the next entity slice layer is prepared, and in this way, the metal dot matrix component is formed by overlapping a plurality of layers ultimately; after preparing is completed, cooling is conducted for 30 minutes, unformed powder is removed, then the base plate is taken out, and the weldless metal dot matrix component is obtained through a wire-electrode cutting method. According to the method, the technology is simple and easy to control, operation is easy and reliable, the production period is short, production efficiency is high, and the repeatability is high. The weldless metal dot matrix structural component formed through the method is excellent in mechanical property, and not prone to deformation or collapse.

Description

technical field [0001] The invention belongs to the technical field of rapid prototyping of metal components, in particular to a laser selective melting forming method for metal lattice components without welds. Background technique [0002] At present, the stamping deformation forming method and investment casting method are mainly used for metal lattice structural parts. The stamping deformation forming method needs to be connected by welding, which is prone to weld defects, low forming quality, and the formed lattice structure is single. [0003] The purpose of the present invention is to overcome the shortcomings of traditional manufacturing methods for preparing metal lattice structures, and provide a laser selective melting molding method, which directly forms metal lattice structures on the surface of the substrate through computer programming control. This method can overcome the waste of raw materials caused by traditional subtractive manufacturing, and has many exc...

AI Technical Summary

Problems solved by technology

[0002] At present, the stamping deformation forming method and investment casting method are mainly used for metal lattice structural parts. The stamping deformation forming method needs to be connected by welding, which is prone to weld defects, low forming quality, and the formed lattice structure is single.

[0003] The purpose of the present invention is to overcome the shortcomings of traditional manufacturing methods to prepare metal lattice structures, and to provide a laser selective melting molding method, which can directly form metal lattice structures on the surface of the substrate through computer programming.

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