Method for rapid preparation of metal composite molded parts by selective laser melting additive manufacturing

Abstract

The invention provides a method for rapid preparation of metal composite material molded parts by selective laser melting additive manufacturing. Place a small amount of metal or metal composite material powder on the molding substrate instead of the powder storage chamber; operate the selected area laser melting equipment externally without opening the door of the part molding chamber. The software controls the powder rollers in the part molding chamber to move the powder and the molding cylinder It drives the lifting of the substrate; without opening the door of the part molding chamber, the software of the externally operated selective laser melting equipment controls the laser to selectively melt the powder. The invention improves the operation method of the traditional selective laser melting additive manufacturing equipment. By modifying the software of the selective laser melting additive manufacturing equipment, the powder roller in the part forming room is controlled to move and spread powder, the forming cylinder drives the lifting of the substrate and laser selective melting Powder layers, shaped test pieces, small-sized workpieces or complex structures. The invention can shorten the manufacturing cycle, save raw material powder and ensure the quality of molded parts.

Description

technical field [0001] The invention relates to a metal or metal matrix composite material additive manufacturing method, in particular to a selective laser melting (SLM) additive manufacturing method for forming metal or metal matrix composite material moldings. Background technique [0002] Selective Laser Melting (SLM) is a typical rapid prototyping technology, that is, a kind of additive manufacturing, also known as powder-coating additive manufacturing technology, which can be used without fixtures or molds. Under the control of computer software, laser beams are used to melt and accumulate powder materials to quickly form three-dimensional parts of arbitrary complex shapes. The ability to form complex metal structures is a major feature that distinguishes it from other additive manufacturing forming technologies. At the same time, its production cycle is shorter than other processes, and its material utilization rate is high, so it can be used for direct forming of met...

AI Technical Summary

Problems solved by technology

This not only consumes a large amount of composite powder raw materials, but also needs to clean the powder feeding system every time to avoid the influence of the residual powder in the powder feeding system on the percentage of particles when replacing the mixed powder with different proportions of particles. A lot of time, which leads to the complexity of the research process and the long cycle of preparing molded parts

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