Laser selective melting additive manufacturing equipment and method for heterogeneous materials

Abstract

The invention discloses a laser selective melting additive manufacturing equipment for heterogeneous materials, which includes a molding chamber, a laser, a scanner, a lifting platform of the molding chamber, a scraper, a powder feeding bin, a recovery bin, and a negative pressure device. At the same time, the invention Also provided is a laser selective melting additive manufacturing method for a heterogeneous tool, the manufacturing steps including, S1, establishing a three-dimensional solid model of the tool and a 3D printing additive manufacturing scheme; S2, adjusting the powder outlet of the first powder feeding chamber And the opening and closing of the powder outlet of the second powder feeding bin, complete the powder spreading, and print layer by layer; S3, open the negative pressure device, and recycle the excess powder flowing out of the powder outlet of the second powder feeding bin into the second recovery bin ; The present invention improves the precision and quality of the processing tool by alternately spreading powders of different materials, and reclaiming the unformed redundant powder of different materials before powder spreading, and at the same time, the tool is made of two materials, which has both properties of a material.

Description

technical field [0001] The present invention relates to the technical field of three-dimensional printing equipment, in particular to a heterogeneous material laser selective melting additive manufacturing equipment, and also relates to a heterogeneous tool laser selective melting additive manufacturing method. Background technique [0002] Laser selective melting has high dimensional accuracy and surface quality due to the small size of the powder used and thin layers, and can achieve no margin processing. However, many engineering parts are difficult to use a single material, and require dual performance and double effects. Different parts require different properties, and different parts of parts use different materials, that is, functionally graded materials. [0003] In order to meet the requirements for the manufacture of functionally graded materials, those skilled in the art have designed additive manufacturing equipment capable of realizing selective laser melting o...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the technical problems of the complex structure of the powder bin, the cumbersome powder discharge process, and the mixing and melting of the manufactured tools to reduce the gradient performance in the existing equipment, in order to facilitate the separation of powders of different materials and realize the rapid prototyping of different materials by laser selective melting, and provide A laser selective melting additive manufacturing equipment for heterogeneous materials, and a laser selective melting additive manufacturing method for heterogeneous tools

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