Machining method for manufacturing regular microtexture on surface of metal matrix or coating

A metal matrix and processing method technology, applied in the field of regular micro-textured surface processing, can solve the problems of workpiece surface accuracy, high size requirements, difficult mold preparation, affecting the overall efficiency of texture processing, etc.

Active Publication Date: 2013-04-17
北京睿曼科技有限公司 +2
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  • Abstract
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Problems solved by technology

Due to the complex preparation process of the mask and the high requirements on the surface accuracy and size of the workpiece, the photolithography technology limits its application range
Although mechanical rolling and oth...

Method used

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  • Machining method for manufacturing regular microtexture on surface of metal matrix or coating
  • Machining method for manufacturing regular microtexture on surface of metal matrix or coating
  • Machining method for manufacturing regular microtexture on surface of metal matrix or coating

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Embodiment Construction

[0051] The invention is a processing method for processing regular micro-textures on the surface of metal substrates or coatings. The method combines laser processing technology and micro-abrasive jet processing technology, and uses metal sheets with different shapes and scales as masks. The surface of the substrate or coating is prepared with a pit-shaped micro-texture with different densities, Figure 5 It is a schematic diagram of the processing process, which mainly includes two steps of mask preparation and texture processing:

[0052] Step 1: Mask preparation: process a 304 stainless steel plate with a thickness of 150 μm, polish the surface of the plate, and clean it with chemical reagents. Circular textures with different diameters and spacings are designed and processed by a pulsed Nd:YAG laser processing system laser with a laser wavelength of 1064nm, an average power of 10W, a pulse width range of 5-25ns, and a pulse frequency of 10kHz. Figure 6 , Figure 7 This ...

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Abstract

The invention discloses a machining method for manufacturing a regular microtexture on the surface of a metal matrix or coating, and belongs to the technical field of laser machining and micro-abrasive jet machining. The machining method includes steps of manufacturing a mask, and machining a texture. In the step of manufacturing the mask, a metal material or an inorganic material is used as a mask plate material, patterns are machined on the plate material by a laser machining process, the thickness of a mask plate ranges from 50 micrometers to 300 micrometers, and a ratio of the thickness of the mask plate to the diameter of the smallest pattern of the texture is required to range from 0.5 to 1.2. In the step of machining the texture, the mask is fixed onto the surface of the metal matrix or coating to be machined after the surface of the metal matrix or coating is ground and cleaned, erosion machining is carried out by a micro-abrasive jet machining technology, the erosion pressure ranges from 0.3MPa to 0.8MPa, hard abrasive grains with grain sizes smaller than 50 micrometers are selected, and the diameter of a gas jet nozzle of a spray gun ranges from 1 millimeter to 3 millimeters. The machining method has the advantages of wide application range, high machining efficiency and precision, low cost, good repeatability, controllable machined patterns and the like.

Description

Technical field: [0001] The invention relates to a method for processing a regular micro-textured surface with excellent tribological performance, and belongs to the technical fields of laser processing technology and micro-abrasive jet processing. Background technique [0002] Environment, resources and population are the three main problems facing human society today. The mechanical and electrical product manufacturing industry is the largest application field of energy and resources, and it is also an important source of environmental pollution. The operation of mechanical equipment cannot do without friction. Friction plays a beneficial role in the braking of vehicles, closing of clutches, and tightening of bolts and nuts; while friction in engines, gears, bearings, and seals not only consumes a lot of energy, but even causes parts failure, resulting in equipment failure. It is well known that the surface morphology of a friction pair has a great influence on its fric...

Claims

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Application Information

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IPC IPC(8): B23P17/00
Inventor 张伟于鹤龙吉小超魏敏郭永明汪勇王红美宋占永周新远
Owner 北京睿曼科技有限公司
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