Metal part three-dimensional forming method based on sheet lamination connection

Abstract

The invention discloses a metal part three-dimensional forming method based on sheet lamination connection. The metal part three-dimensional forming method based on sheet lamination connection specifically comprises the following steps that S1, laser cutting is carried out on 0.1 mm stainless steel sheets 304, shell solid layers consistent with the outline of a virtual layer generated by a computer are formed, the machined multiple layers of metal sheets are subjected to sanding, impurities on the surfaces are removed, meanwhile, the surface smooth is guaranteed, oil contamination is removed,and ultrasonic cleaning is carried out so that the surface finish can meet the standard required by an experiment; S2, the sheets are fixed through positioning pins and are welded through laser layerby layer, and a part model is obtained; and S3, after the sheets are fixed through the positioning pins and a self-made clamp, the sheets are put into a high-temperature thermal diffusion furnace to be subjected to long-time pressure vacuum diffusion welding.

Description

technical field [0001] The invention relates to a method for three-dimensional forming of metal parts based on laminar lamination connection. Background technique [0002] With the rapid development of information technology and industrialization level, metal 3D printing technology has entered a prosperous period of blooming flowers. According to different forming methods and characteristics, metal forming technologies mainly include: Selective Laser Melting (Selective Laser Melting, SLM), Selective Laser Sintering (Selective Laser Sintering, SLS), layered object manufacturing (Laminated Object Manufac-turing) , LOM), three-dimensional printing technology (3D Printing, 3DP), among them layered entity manufacturing technology (Laminated Object Manufacturing, LOM), also known as thin material selective cutting, is one of several most mature rapid prototyping manufacturing technologies. The traditional layered entity manufacturing technology uses paper materials with a thickne...

AI Technical Summary

Problems solved by technology

The traditional layered entity manufacturing technology uses paper materials with a thickness of 0.05 to 0.1mm as raw materials, forms single-layer two-dimensional graphics through wire cutting and other processing techniques, and then uses hot melt adhesives and additives for bonding and molding. Due to the manufacture of simple molds and parts, the manufacturing cycle is long, and it is impossible to directly form metal parts with complex inner cavities

In response to this problem, in recent years, thin metal sheets have been traditionally machined and cut into a series of two-dimensional graphics, and then laminated and connected by various forms of welding such as pressure thermal diffusion welding and laser spot welding, thus forming Metal parts with higher modeling precision and more complex shapes

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