Method and device for manufacturing metal additive materials

Abstract

The invention discloses a method for manufacturing metal additive materials. The method includes the steps that a part structure and a supporting structure are built layer by layer, wherein the supporting structure is built by using an adhesive agent for bonding metal powder materials; and after part formation is completed, the adhesive agent is melted by high-temperature heating or dissolved by an organic solvent, and the supporting structure is removed. The invention further discloses a device for manufacturing the metal additive materials, and the device is included in the method. The device comprises a high-energy beam source, an optical unit, a forming chamber, a forming cylinder and a powder laying device, wherein the forming cylinder and the powder laying device are located in the forming chamber; the forming chamber is further provided with an adhesive spraying device which is used for providing the adhesive agent needed for building the supporting structure included in the method. The supporting structure built by the adoption of the method and device can be removed only by making the adhesive agent melted with high-temperature heating or dissolved with the organic solvent after part formation is completed, and no subsequent machining treatment is needed, so that cost for the subsequent treatment is reduced, and the forming efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of metal additive manufacturing, and in particular relates to a metal additive manufacturing method and a metal additive manufacturing device used in the method. Background technique [0002] Additive manufacturing technology, born in the late 1980s, is a rapid prototyping process based on the principle of material accumulation. It is based on digital model files, using non-metallic bonding materials such as powdered metal or plastic, through layer-by-layer accumulation. The technology of constructing objects in a unique way has the characteristics of not being limited by the complexity of parts and fully digitalized control. [0003] As an important part of additive manufacturing technology, metal additive manufacturing mainly uses metal powder, granules or wire as raw materials, pre-layered processing of CAD models, and high-power laser beams are used to melt and accumulate to form three-dimensional object...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a metal additive manufacturing method, the support structure generated by this method is easy to remove, which solves the problem that the existing support structure needs to be removed by machining and affects the forming quality of the parts

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