Forming method for selective laser melting forming technology

Abstract

The invention discloses a forming method for a selective laser melting forming technology, and belongs to the technical field of additive manufacturing. The forming method comprises the steps of according to the actual design size of a target part, carrying out allowance compensation to optimize a three-dimensional model, and constructing a three-dimensional entity model suitable for selective laser melting forming; according to the obtained three-dimensional entity model, designing and slicing a supporting structure suitable for the target part; after the supporting structure is designed, carrying out process arrangement to form a model file, and slicing the obtained model file; and setting process parameters of the selective laser melting forming technology, and carrying out integrated printing forming, wherein the target part is of a cavity thin-wall structure. Through the forming method, the defect that in the integrated forming process of the part with the cavity thin-wall structure, the part is prone to being scratched by a scraper due to thermal stress can be effectively overcome, and the percent of pass is increased.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and relates to a molding method for laser selective melting molding technology. Background technique [0002] With the increasing demand and application development of rapid prototyping production technology, more and more industrial parts are expected to be applied in rapid prototyping production technology. Among them, selective laser melting technology (Selective Laser Melting, SLM) has received high attention because it can be well applied to laser 3D printing technology for metal parts. It has the characteristics of high processing precision and almost no subsequent mechanical processing, and can be used in Manufacture all kinds of complex precision metal parts, realize the integration of structure and function, light weight, and are widely used in the field of aerospace. In addition, laser selective melting molding technology, as a representative of additive manufacturing te...

AI Technical Summary

Problems solved by technology

The production process has the disadvantages of long process flow, high production cost and low pass rate.

However, due to the cavity and thin-walled structure of the above-mentioned fuel nozzle, it is easy to produce defects due to thermal stress and scraping of the scraper during the molding process, which will easily cause the scrap rate of the produced parts, reduce the production efficiency, and increase the cost input

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