A laser cladding etching preparation method for 3D printing formed parts
A laser cladding, 3D printing technology, applied in the directions of additive manufacturing, process efficiency improvement, energy efficiency improvement, etc., to achieve the effect of improving wear resistance and lubrication performance, high degree of automation, and good tribological performance
Active Publication Date: 2017-11-28
四川三阳激光增材制造技术有限公司
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[0003] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a laser cladding and etching preparation method for 3D printing formed parts, which has the advantages of reducing processing time, improving work efficiency, and durability of formed parts. The overall improvement of abrasiveness and lubrication performance, overcoming the problem of poor lateral forming accuracy of additive manufacturing formed parts, and greatly improving the hardness of the edge of the hole, etc., make it reliable in performance, stable in operation, no noise, no pollution, etc. in the actual application process Beneficial effect
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[0021] Attached below Figure 1-2 A laser cladding and etching preparation method for 3D printing shaped parts of the present invention will be described in detail.
[0022] A preparation method for laser cladding etching of 3D printed parts, the preparation method comprising the following steps,
[0023] 1) Powder feeding: Use acetone to clean and absolute ethanol to clean the surface of the metal or alloy substrate, and dry it with cold air; use a sandblasting machine or a polishing machine to uniformly roughen the surface of the cleaned metal or alloy substrate, so that Its surface roughness Ra<10μm; according to the functional design requirements of the formed part, calculate the distribution ratio of each component in the composite powder at different positions, and use a ball mill to fully and uniformly mix the composite powder, and place the mixed powder at 100-200°C Dry in a drying box for 1-1.5 hours; place the dried composite powder in the powder cylinder of the 3D ...
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Abstract
The invention relates to a preparation method of laser cladding etching for 3D printing formed parts, comprising: 1) powder feeding; 2) layered slicing processing; 3) layered laser cladding; 4) layered multi-scale porous structure laser Etching treatment; 5) After all the above steps are completed, the workbench controls the laser, inert gas protection device and powder feeder of the 3D printer to be closed, and the wear resistance and / or lubricity testing of the final formed part is carried out. It proposes to use laser cladding in additive manufacturing, supplemented by laser etching with higher precision, to manufacture parts with special multi-scale porous surface structures, which can reduce processing time, improve operating efficiency, and wear-resistant formed parts. It has the advantages of improved overall performance and lubricating performance, overcomes the problem of poor lateral forming accuracy of additively manufactured parts, and greatly improves the hardness of the edge of the hole, making it reliable in performance, stable in operation, noise-free, and pollution-free in practical applications. Effect.
Description
technical field [0001] The invention relates to the technical field of forming and manufacturing of 3D printing metal parts, in particular to a preparation method for laser cladding and etching of 3D printing formed parts. Background technique [0002] 3D printing technology has become one of the most concerned emerging technologies in the world. This emerging technology, together with other digital production models, has accelerated the development of manufacturing. The new technology of additive manufacturing technology is developing at an unprecedented speed. Among them, laser cladding has attracted special attention because of its advantages over other laser additive manufacturing technologies. Laser selective sintering / laser selective melting (SLS / SLM) and laser near-net shaping (LENS, laser cladding LCD) both use metal powder as the material to form metal parts. However, there is a big difference between the two. The former uses a powder bed and cannot form larger par...
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IPC IPC(8): B22F3/105B22F3/24B33Y10/00
CPCB22F3/24B33Y10/00B22F2003/247B22F10/00B22F10/38B22F12/45B22F10/25B22F10/36B22F10/366B22F10/50B22F10/32Y02P10/25
Inventor 顾德阳
Owner 四川三阳激光增材制造技术有限公司