Powder bed electron beam additive manufacturing equipment and method

Abstract

The invention discloses powder bed electron beam additive manufacturing equipment and method, belongs to the field of powder bed additive manufacturing equipment, and solves the problem that an existing powder bed electron beam additive manufacturing equipment can only print a single material and cannot print two materials. The equipment comprises a first powder spreading unit, a second powder spreading unit and a forming cylinder, wherein the first powder spreading unit is located on the first side in a forming chamber; the second powder spreading unit is located on the second side in the forming chamber and used for containing second powder; the forming cylinder is located in the middle of the forming chamber, and the upper surface of the forming cylinder makes contact with the first powder spreading unit and the second powder spreading unit; and the forming cylinder is located in the forming chamber and used for driving a third powder spreading platform arranged on the upper surfaceof the forming cylinder to rotate through a bearing arranged on the forming cylinder and sequentially scraping first powder and the second powder into the forming cylinder, and the upper surface of the third powder spreading platform makes contact with the first powder spreading unit and the second powder spreading unit.

Description

technical field [0001] The invention relates to the field of powder bed additive manufacturing equipment, and more specifically relates to a powder bed electron beam additive manufacturing equipment and method. Background technique [0002] Powder bed electron beam metal additive manufacturing technology is one of the mainstream technologies of metal additive manufacturing. The powder bed electron beam additive manufacturing technology is similar to the laser printing powder making process. First, a layer of metal powder is laid, and then the electron beam scans and prints. The powder bed electron beam additive manufacturing technology is different from the laser printing powder making process. The bed electron beam can preheat the powder bed, so there is an intermediate preheating process in the powder bed electron beam additive manufacturing technology; moreover, compared with the laser printing powder, the powder bed electron beam additive manufacturing technology also ha...

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Problems solved by technology

[0004] The embodiment of the present invention provides a powder bed electron beam additive manufacturing equipment and method, which is used to solve the problem that the existing powder bed electron beam additive manufacturing equipment can only print a single material and cannot print two materials

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