Method for precinct laser sintering fast manufacture metal die

Abstract

The invention relates to a method for quickly producing metal mould with laser sintering, which comprises: first, using at least two kinds of different metal powders with different diameters, to be mixed with different mass percentages; using physical or chemical modification to treat the surface of metal powder; then mixing the modified metal powders, the adhesive formed by organic resin and inorganic with different fusion points, and the lubricant uniformly to obtain the metal molding powder; then designing the three-dimension CAD mode of mould, to slice the mode, and laser sintering the metal molding powder; the laser sintered element is baked at 300-800Deg. C; using vacuum pressure penetration to penetrate the metal, to obtain the high-accuracy metal mould.

Description

technical field

[0001] The invention relates to rapid manufacturing of metal molds, in particular to a method for rapid manufacturing of metal molds by selective laser sintering (Selective laser sintering, SLS). Background technique:

[0002] With the globalization of the market and the intensification of competition, the speed of product replacement is accelerating. The development, research, production cycle of new products, small batches, and fast updates have become one of the main trends in the development of manufacturing technology. Small batches will become an important production mode in the manufacturing industry. In this case, the manufacturing industry puts forward higher requirements for the rapid manufacturing of product prototypes and rapid manufacturing technology of molds, and proposes high-efficiency, high-precision, and high-life three-high molds. The goal of metal mold rapid manufacturing technology is to directly manufacture high-precision durable metal...