Method and equipment for laser cladding formation of columnar metal parts in streamline direction
A metal parts, laser cladding technology, applied in the field of additive manufacturing, can solve the problem of parts performance degradation
Inactive Publication Date: 2018-08-03
JIANGSU UNIV
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Problems solved by technology
[0006] In order to solve the above problems, the present invention provides a method and equipment for forming by laser cladding along the optimal streamline direction of columnar metal parts, which can solve the performance degradation in a specific direction of the part due to internal streamline defects of the part.
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[0024] The present invention will be further described below in conjunction with specific examples, but the protection scope of the present invention is not limited to the examples.
[0025] See attached figure 2 As shown, what is described in this embodiment is a method and equipment for forming a columnar metal part by laser cladding along the streamline direction. A M30×90 outer hexagon flat head bolt is now selected as a model. Bolt size: nominal diameter 30mm, nominal length 90mm, width across sides 46mm, head height 18.7mm, pitch 3.5mm;
[0026] An example of using the above-mentioned M30×90 outer hexagon flat-head bolts for laser cladding along the streamline, the specific steps are:
[0027] (1) Design, simulate and optimize the three-dimensional streamline model of the bolt, and cut the model into layers of slices from the inside to the outside, which are divided into 15 layers in total, and finally plan the laser scanning path suitable for processing and the load-b...
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Abstract
The invention relates to laser cladding additive manufacturing technologies, in particular to a method and equipment for laser cladding formation of columnar metal parts in the streamline direction. According to the method, a bearing part and a core are formed at the middle axis of a to-be-machined part in a laser cladding mode to serve as a substrate, and the streamline is simulated in a softwaredesign mode and optimized to obtain an optimal laser scanning path. The axis where the bearing part and the core are located can rotate by 360 degrees on a base; a laser head, a metal powder sprayerand a shielding gas sprayer are coaxially fixed to a three-axis linked manipulator, laser cladding forming is conducted layer by layer from inside to outside along the optimal laser scanning path, anda computer assists in controlling the cladding speed and the cladding area width. By means of the method, the optimal streamline distribution inside the parts is spatially simulated to the greatest extent, and thus the purpose that the mechanical property of the columnar metal parts approximates to and even reaches the level of forged pieces is achieved.
Description
technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a method and equipment for laser cladding forming of columnar metal parts along the streamline direction. Background technique [0002] Laser cladding forming technology is a new surface modification technology. The essence is to place coating materials on the surface of the cladding substrate in different ways, and melt it and the thin layer of the substrate surface at the same time through laser irradiation. After rapid solidification, a surface coating with extremely low dilution and metallurgical combination with the substrate is formed, which significantly improves the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical properties of the base layer surface, so as to achieve the effect of surface modification or repair. The purpose is to not only meet the requirements for the specific performance of the material surface, ...
Claims
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IPC IPC(8): C23C24/10B22F3/105B33Y10/00B33Y30/00
CPCC23C24/103B33Y10/00B33Y30/00B22F10/00B22F10/366B22F10/25B22F10/80Y02P10/25
Inventor 鲁金忠张晓磊罗开玉顾成义沈华宾
Owner JIANGSU UNIV