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Welding wire with ultrahigh abrasion resistance and application thereof

A kind of welding wire, super strong technology, applied in the field of material surface modification plate, can solve the problem of not improving the hardness, strength and wear resistance of the surfacing layer, reducing the toughness, reducing the fatigue strength and wear resistance of the hard surface layer, etc. problems, to achieve the effect of reducing material cost and processing time, reducing wear, and reducing the cost and time of replacement

Pending Publication Date: 2019-03-29
EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The appearance of these cracks greatly reduces the fatigue strength and wear resistance of the hard surface layer
Moreover, a large number of carbide points are easy to gather at the grain boundary, which not only cannot improve the hardness, strength and wear resistance of the surfacing layer, but also significantly reduces its toughness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a super wear-resistant welding wire, the welding powder blank is composed of a matrix metal and a reinforcing phase, and the reinforcing phase is uniformly dispersed in the matrix metal, in terms of the mass percentage of the welding powder blank, the matrix metal The chemical components include: Cu: 50%, Ni: 15%, Mn: 15%, and the remaining 20% ​​is a reinforcement phase, the reinforcement phase is tungsten carbide particles, and the particle size of the tungsten carbide particles is 400 mesh.

[0032] Perform a performance test on the super wear-resistant welding wire provided in this example, and conduct a performance test on the purchased commercial welding wire under the same test conditions as a comparison, as follows:

[0033] Umt-tribolab friction and wear instrument is used for dry friction and wear test. The instrument is equipped with a variety of test modules, which can perform normal high temperature friction and wear tests, and can p...

Embodiment 2

[0037]This embodiment provides a super wear-resistant welding wire, the welding powder blank is composed of a matrix metal and a reinforcing phase, and the reinforcing phase is uniformly dispersed in the matrix metal, in terms of the mass percentage of the welding powder blank, the matrix metal The chemical components include: Cu: 43%, Ni: 18%, Mn: 11%, Fe: 2%, and the remaining 26% is a reinforcement phase, the reinforcement phase is tungsten carbide particles, and the particle size of the tungsten carbide particles is It is 325 mesh.

[0038] Under the same test conditions as in Example 1, the wear resistance of the wear-resistant welding wire described in this example is basically the same as that in Example 1. The super wear-resistant welding wire can repair the surface of damaged parts through the method of additive manufacturing.

Embodiment 3

[0040] This embodiment provides a super wear-resistant welding wire, the welding powder blank is composed of a matrix metal and a reinforcing phase, and the reinforcing phase is uniformly dispersed in the matrix metal, in terms of the mass percentage of the welding powder blank, the matrix metal The chemical components include: Cu: 62%, Ni: 13%, Mn: 12%, graphite: 0.7%, and the remaining 12.3% is a reinforcing phase, the reinforcing phase is tungsten carbide particles, and the particle size of the tungsten carbide particles is It is 140 mesh.

[0041] The wear resistance of the wear-resistant welding wire described in this embodiment is good, which is basically consistent with that of Embodiment 1. The super wear-resistant welding wire is melted under the action of heat to produce a chemical reaction, and a wear-resistant coating is formed on the surface of the mechanical parts parent body. The coating is not easy to peel off and has stable quality.

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PUM

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Abstract

The invention provides a welding wire with ultrahigh abrasion resistance. A welding powder billet of the welding wire with ultrahigh abrasion resistance is composed of base metal and a reinforced phase. The base metal comprises, by mass, 40-70% of Cu, 10-20% of Ni and 10-20% of Mn. The reinforced phase serves as the balance and is made of tungsten carbide particles. An abrasion-resistant layer formed by surfacing the welding wire with ultrahigh abrasion resistance has excellent abrasion resistance, high corrosion resistance and toughness, and good impact resistance, and the abrasion-resistantlayer is not prone to peeling and stable in quality by combining with a matrix. The welding wire with ultrahigh abrasion resistance has remarkable advantages on the aspect of additive manufacturing.

Description

technical field [0001] The invention belongs to the technical field of material surface modification plates, and relates to a super wear-resistant welding wire and its application. The super wear-resistant welding wire can be used for additive manufacturing. Background technique [0002] According to statistics, the steel equipment scrapped due to wear and corrosion in the world is equivalent to about 40% of the annual steel output, and the workpieces that fail due to wear and corrosion account for about 70% of the total failure workpieces in my country every year. Wear is one of the main forms of failure of equipment components. According to the classification of abrasive wear proposed by Avery in 1961, the most serious abrasive wear is chisel wear, which is caused by high-stress collisions generated by the abrasive against the surface of the worn part, and a block of material is chiseled from the surface of the part. This kind of wear is often accompanied by strong impact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
CPCB23K35/0261B23K35/302
Inventor 夏卫生孟学伟龚福建黄增涛张进叶
Owner EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH
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