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Laser cladding 316L stainless steel optimizing process

A technology of laser cladding and stainless steel, which is applied in the direction of metal material coating process and coating, can solve the problems of not paying attention to the factors of shielding gas, and achieve the effect of excellent dual waveguide confinement mechanism, long service life and reduced powder oxidation

Active Publication Date: 2017-09-29
NORTHEASTERN UNIV
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AI Technical Summary

Problems solved by technology

[0003] At present, the existing laser cladding technology does not focus on the shielding gas factor, nor does it comprehensively consider the shielding gas factor as a factor affecting the stainless steel processing technology

Method used

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  • Laser cladding 316L stainless steel optimizing process
  • Laser cladding 316L stainless steel optimizing process
  • Laser cladding 316L stainless steel optimizing process

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] A laser cladding 316L stainless steel optimization process has the following steps,

[0028] S1. Carry out necessary machining and grinding treatment on the cladding surface of No. 45 steel base material and its contact surface with the workbench, and initially remove surface rust and oxidation, and at the same time ensure that the hei...

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Abstract

The invention discloses a laser cladding 316L stainless steel optimizing process. The laser cladding 316L stainless steel optimizing process comprises the following steps that the cladding surface of No.45 steel base material and the contact surface of the No.45 steel base material and platforms are essentially pretreated; 316L stainless steel powder is dried for 4 hours to guarantee full drying of the powder; off-line programming for a processing track is conducted; an orthogonal test is conducted; a range analysis is conducted on the shape coefficient zeta; the range analysis is conducted on the dilution ratio D; and a metallurgical structure analysis is conducted. According to the laser cladding 316L stainless steel optimizing process, a shielding gas factor which is not valued enough before is considered emphatically and is taken as the factor which influences a stainless steel processing process for overall consideration; 316L stainless steel is obtained after cladding with the adoption of optimum process parameters obtained from the laser cladding 316L stainless steel optimizing process, it is guaranteed that a good surface appearance can be obtained on the premise that the mechanical property of the 316L stainless steel is not influenced, meanwhile the defects such as surface powder sticking, pores and cracks can be overcome, and a specific optimizing scheme is provided for process optimization of laser cladding stainless steel parts.

Description

technical field [0001] The invention relates to laser surface cladding technology, in particular to a laser cladding 316L stainless steel optimization process. Background technique [0002] Laser cladding technology is a processing method that accumulates materials layer by layer from bottom to top. Compared with traditional manufacturing methods, it reduces the constraints of parts manufacturing, has a high degree of design freedom, and can manufacture complex inner cavity parts and tiny medical parts. Reduce the process, one-step forming manufacturing, improve the stability and life of parts. Functionally graded materials with continuously changing chemical composition can be manufactured, which expands the field of special two-piece manufacturing. To solve the problems of low utilization rate and difficult forming of aerospace materials, laser cladding technology can improve the utilization rate of precious metals. The formed parts have a fine and dense microstructure ...

Claims

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Application Information

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IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 孙佳钰毕晓夕赵雨杨林于天彪
Owner NORTHEASTERN UNIV
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