Preparation method for laser cladding soft and hard composite coating self-lubricating cutter

A laser cladding, soft and hard composite technology, applied in coatings, chemical instruments and methods, metal material coating processes, etc., can solve problems such as laser cladding soft and hard composite coatings

Inactive Publication Date: 2015-06-03
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no reports of laser cladding soft and hard composite coating self-lubricating tools at home and abroad

Method used

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  • Preparation method for laser cladding soft and hard composite coating self-lubricating cutter

Examples

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Effect test

example 1

[0018] A preparation method of laser cladding soft-hard composite coating self-lubricating tool, the base material is W18Cr4V high-speed steel tool; the surface self-lubricating soft coating material is nickel-coated MoS 2 , the hard coating material is nano-Al 2 o 3 Ceramic; cladding method is CO 2 Laser synchronous powder feeding method cladding. Its preparation method is as follows:

[0019] (1) Put the W18Cr4V high-speed steel tool in the alcohol and acetone solution for 20 minutes to ultrasonically clean it for degreasing treatment.

[0020] (2) The experiment uses CO with a wavelength of 10.6 μm 2 For the laser, the laser parameters are adjusted as follows: the laser power is 600W, the spot diameter is 2mm, the scanning speed is 5mm / s, and the overlap rate Φ=25%.

[0021] (3) Al with a particle size of 100-150nm 2 o 3 The ceramic powder is fully mixed, and its main component (weight percent): 97% Al 2 o 3 , 2% Ni and 1% Al; the prepared nano-Al 2 o 3 Ceramic p...

example 2

[0026] A preparation method of self-lubricating tool with laser cladding soft-hard composite coating. The base material is W6Mo5Cr4V2 high-speed steel tool; the surface self-lubricating soft coating material is nickel-coated WS 2 , the hard coating material is ultrafine cemented carbide; the cladding method is CO 2 Laser synchronous powder feeding method cladding. Its preparation method is as follows:

[0027] (1) Put the W6Mo5Cr4V2 high-speed steel tool in the alcohol and acetone solution for 20 minutes and ultrasonically clean it for degreasing treatment.

[0028] (2) The experiment uses CO with a wavelength of 10.6 μm 2 laser. The laser parameters were adjusted as follows: the laser power was 600W, the spot diameter was 3mm, the scanning speed was 4mm / s, and the overlapping rate Φ=30%.

[0029] (3) Fully mix ultrafine cemented carbide powder with a particle size of 100-500nm, its main components (weight percent): 80% WC, 10% Co, 5% W, 1.5% VC, 1% Cr 3 C 2 And 1% Ni, 1...

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Abstract

The invention belongs to the field of machinery cutting cutter manufacturing, and relates to a preparation method for a laser cladding soft and hard composite coating self-lubricating cutter. A rake face coating of the cutter is a multi-layer structure. Firstly, a hard coating of nano Al2O3 ceramic or an ultrafine cemented carbide, etc. is clad on the rake face of the cutter by utilization of a CO2 laser synchronous feeding manner, and then a self-lubricating soft coating is clad by utilization of nickel-covered MoS2 powder or nickel-covered WS2 powder. The cutter has characteristics of good toughness, high hardness, a self-lubrication function, and the like. During a drying cutting process, the hard coating bears loads and the rake face self-lubricating soft coating has low shearing strength, thus reducing friction between the cutter and chips, reducing the cutting temperature and the cutting force, and therefore cutter abrasion is reduced. The cutter can be widely used for dry cutting and cutting machining of difficult-to-machine materials.

Description

technical field [0001] The invention belongs to the field of mechanical cutting tool manufacturing, and relates to a preparation method of a self-lubricating tool with a laser cladding soft and hard composite coating. Background technique [0002] Due to the high cost of cutting fluid and environmental pollution, dry cutting has become a research hotspot in green processing. However, during high-speed dry cutting, the friction between the chips on the rake face is extremely severe, which generates a lot of heat, resulting in rapid wear of the tool. Therefore, there is an urgent need to research and develop new tools that are non-polluting, efficient, and have high hardness and high wear resistance, so as to reduce friction during high-speed dry cutting and improve tool life. [0003] At present, the cutting tool materials widely used at home and abroad mainly include high-speed steel, cemented carbide, ceramics and diamond tools. High-speed steel has poor thermal conductiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/04B32B9/04C23C24/10
Inventor 邢佑强邓建新
Owner SHANDONG UNIV
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