Selective laser melting forming method of multi-material part

Abstract

The invention relates to the field of a part forming process, and discloses a selective laser melting forming method of a multi-material part. The method comprises the following steps of S1, part model design, wherein during modeling, materials meeting forming needs are combined to be arranged according to the proper distribution rule, and part model design is finished in an optimized manner; S2,process model obtaining, wherein a designed part model is subjected to size and shape compensation, chamfering, remaining adding, process support design and the like, and a process model is obtained;S3, control file generation, wherein the obtained process model is subjected to layered slicing, the material kind, material distribution and material boundary information contained in each layer areextracted, and a control file guiding an additive manufacturing forming process is generated; S4, additive manufacturing forming; and S5, forming aftertreatment. According to the method, through the selective laser melting forming technology, the high-precision high-quality multi-material part can be formed.

Description

technical field [0001] The invention belongs to the field of parts forming technology, and in particular relates to a method for forming multi-material parts. Background technique [0002] Multi-material parts, also known as heterogeneous material parts, are a type of functional parts that are composed of a variety of materials distributed according to certain rules, and have the characteristics of material control, shape control, and controllability. As the modern industry has higher and higher requirements for product functions and performance, it is difficult for parts made of a single material to meet the needs of use. Therefore, the forming method of multi-material parts has become a hot spot that people pay more and more attention to. At present, the methods that can be used for forming multi-material parts mainly include centrifugal casting method, physical and chemical vapor deposition method, self-propagating high-temperature synthesis method, powder metallurgy meth...

AI Technical Summary

Problems solved by technology

As the modern industry has higher and higher requirements for product functions and performance, it is difficult for parts made of a single material to meet the needs of use. Therefore, the forming method of multi-material parts has increasingly become a hot spot of concern.

At present, the methods that can be used for forming multi-material parts mainly include centrifugal casting method, physical and chemical vapor deposition method, self-propagating high-temperature synthesis method, powder metallurgy method, plasma spraying method, laser cladding method, etc., but these methods generally have different types of materials to choose from. Less, low bonding strength between materials, uncontrollable material distribution, too simple shape of parts, dimensional accuracy of parts cannot be guaranteed, etc.

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