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A knife that uses laser cladding technology to strengthen the blade

A laser cladding and technology technology, applied in the direction of metal material coating process, coating, metal processing, etc., can solve the problems of high requirements for cladding powder, production powder does not meet the requirements, etc., to achieve low cost, corrosion resistance and resistance. The effect of improved abrasiveness and low dilution rate

Active Publication Date: 2022-02-11
YANGJIANG KNIFESCISSOR HARDWARE RES INSTITUTION OF IND TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Some foreign product companies have begun to use laser cladding technology to prepare tool cladding layers, but the requirements for cladding powder are relatively high, and domestic production powder has not yet met the requirements

Method used

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  • A knife that uses laser cladding technology to strengthen the blade
  • A knife that uses laser cladding technology to strengthen the blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The cemented carbide mixed powder is a mixture of nickel-based alloy powder and tungsten carbide powder. The nickel-based alloy powder accounts for 70% by mass, and the tungsten carbide powder accounts for 30% by mass. The nickel-based alloy powder is composed of Cr : 18%, Fe: 5%, Nb: 2%, Mo: 8%, Al: 0.2%, Ti: 1.5%, C: 0.4%, Si: 0.2%, Mn: 0.2%, V: 1.5%, remaining The amount is Ni. The material of the cutter body to be clad is 3Cr13 and the thickness is 2.5mm; the cutter body is pretreated and polished with sandpaper to remove the oxide skin or rust spots on the cutting edge line 1, and the cladding part of the cutter body is cleaned with acetone to remove the surface dust and Oil stains, etc.; choose equipment and parameters for laser cladding on the blade: the laser is a semiconductor laser, coaxial powder feeding, laser cladding parameters: laser power 1300W, defocusing distance 10mm, cladding speed 5mm / s, The protective gas pressure is 0.1Mpa, the laser spot diamete...

Embodiment 2

[0023] The cemented carbide mixed powder is a mixture of nickel-based alloy powder and tungsten carbide powder. The nickel-based alloy powder accounts for 60% by mass, and the tungsten carbide powder accounts for 40% by mass. The nickel-based alloy powder is composed of Cr : 20%, Fe: 5%, Nb: 3%, Mo: 9.5%, Al: 0.3%, Ti: 2.0%, C: 0.5%, Si: 0.3%, Mn: 0.4%, V: 2.0%, remaining The amount is Ni. The material of the cutter body to be clad is 4Cr13 and the thickness is 3.0 mm; the cutter body is pretreated and polished with sandpaper to remove the oxide skin or rust spots on the cutting edge line 1, and the cladding part of the cutter body is cleaned with acetone to remove the surface dust and Oil stains, etc.; choose equipment and parameters for laser cladding on the blade: the laser is a fiber laser, using lateral powder feeding laser cladding, the laser cladding parameters are: laser power 1500W, defocusing distance 12mm, cladding speed 6 ㎜ / s, the protective gas pressure is 0.1Mpa...

Embodiment 3

[0026] The cemented carbide mixed powder is a mixture of nickel-based alloy powder and tungsten carbide powder. The nickel-based alloy powder accounts for 40% by mass, and the tungsten carbide powder accounts for 60% by mass. The nickel-based alloy powder is composed of Cr : 23%, Fe: 6%, Nb: 4.5%, Mo: 11%, Al: 0.4%, Ti: 2.5%, C: 0.6%, Si: 0.5%, Mn: 0.6%, V: 2.5%, remaining The amount is Ni. The material of the knife body to be clad is 4Cr13, and the thickness is 3.0mm; the knife body is pretreated and polished with sandpaper to remove the oxide skin or rust spots on the edge line 1, and the cladding part of the knife edge is cleaned with acetone to remove the dust and oil on the surface etc.; select the equipment and parameters for laser cladding on the blade: the laser is a fiber laser, using side-feeding laser cladding, the laser cladding parameters are: laser power 1800W, defocus distance 12mm, cladding speed 8mm / s, the protective gas pressure is 0.1Mpa, the laser spot di...

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Abstract

The invention discloses a cutting tool which utilizes laser cladding technology to strengthen the cutting edge. Including the cutter body and the handle body, the cutting edge line position of the cutter body is clad with a layer of cladding layer formed by wear-resistant cemented carbide mixed powder, and the cemented carbide mixed powder is composed of nickel-based alloy powder and tungsten carbide powder The mass percentage of nickel-based alloy powder is 40%-70%, and the mass percentage of tungsten carbide powder is 30%-60%. The nickel-based alloy powder is composed of Cr: 18%-23%, Fe : 4%~7%, Nb: 2%~4.5%, Mo: 8%~11.5%, Al: 0.2%~0.4%, Ti: 1%~2.5%, C: 0.1%~0.6%, Si: 0.2 %~0.5%, Mn: 0.2%~0.6%, V: 1.5%~2.5%, the balance is Ni. The advantages of the present invention are that the cladding layer and the cutter body achieve good metallurgical bonding, the cladding layer structure is fine and uniform, and the dilution rate is low; after the cutter body is sharpened, the hardness, sharpness, corrosion resistance and wear resistance of the blade are improved. Both have been greatly improved, the cost is low, and the toughness will not be reduced while increasing the hardness of the blade.

Description

technical field [0001] The invention belongs to the field of cutting tool manufacturing, and more specifically relates to a cutting tool that uses laser cladding technology to strengthen the cutting edge. Background technique [0002] At present, the domestically developed and relatively mature methods of strengthening the blade of the tool include heat treatment, surface quenching, thermal expansion and infiltration technology, electroplating and thermal spraying, etc. Heat treatment, surface quenching and thermal infiltration technology all change the performance of the blade without changing the base material. The extent to which these methods improve the performance of the blade is very limited. Although electroplating and thermal spraying can use special alloy powder to form a coating layer, but The bonding strength between the coating layer and the substrate is limited. [0003] The above-mentioned methods have their own shortcomings and deficiencies, and the degree o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10B26B9/00
CPCC23C24/103B26B9/00
Inventor 张瑞华路超尹燕屈岳波刘鹏宇栗子林蔡伟军刘燕红
Owner YANGJIANG KNIFESCISSOR HARDWARE RES INSTITUTION OF IND TECH
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