Scanning method for electronic beam selective melting

A technology of electronic area selection and scanning method, which is applied in the field of 3D printing, can solve problems such as pore defects and molding interruptions of molding parts, and achieve the effects of improving molding accuracy, uniform heating, and ensuring normal progress

Active Publication Date: 2018-05-22
YUANMENG PRECISION TECH SHENZHEN INST
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Problems solved by technology

[0004] The purpose of the present invention is to provide a scanning method for electronic selective melting to solve the technical problem in the prior

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  • Scanning method for electronic beam selective melting
  • Scanning method for electronic beam selective melting
  • Scanning method for electronic beam selective melting

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[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is said to be "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "Bottom", "Inner", "Outer" and other indications of the orientation ...

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Abstract

The invention provides a scanning method for electronic beam selective melting. A preheated substrate is involved in the scanning method for electronic beam selective melting; powder is laid on the substrate, and a powder laying area is formed; the powder laying area is divided into multiple powder scanning areas along the first axis, each powder scanning area is provided with M powder scanning lines which are spaced; the first powder scanning lines of all the powder scanning areas are sequentially scanned along the first axis, the second powder scanning lines of all the powder scanning areasare sequentially scanned along the first axis, and scanning is not stopped until all the powder scanning lines in each powder scanning area are sequentially scanned along the first axis. According tothe scanning method for electronic beam selective melting, through division of the multiple powder scanning areas and arrangement of the multiple powder scanning lines, powder is heated more evenly, the powder scattering phenomenon is restrained, and the forming precision of a part is improved.

Description

Technical field [0001] The invention belongs to the field of 3D printing technology, and more specifically, relates to a scanning method for electronically selected area melting. Background technique [0002] 3D printing technology is a kind of rapid prototyping technology that uses raw materials such as powdered metal or plastic to construct objects by printing layer by layer. When manufacturing metal parts, methods such as electron beam selective melting of metal (EBSM) are usually used. EBSM technology is a direct molding technology for metal parts that uses high-energy electron beams as the processing heat source, and controls the electron beams to quickly scan the substrate according to a predetermined trajectory to quickly solidify the powder after melting. By scanning the powder on the substrate layer by layer, three-dimensional metal parts can be manufactured. [0003] However, when the electron beam bombards the powder, the powder is charged and the powder with the same ...

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Application Information

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IPC IPC(8): B22F3/105B33Y10/00
CPCB33Y10/00B22F10/00B22F10/28B22F10/366B22F10/362B22F12/33Y02P10/25
Inventor 李军旗聂炎陈伟邹杰
Owner YUANMENG PRECISION TECH SHENZHEN INST
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