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High-hardness wear-resistant overlaying welding electrode and preparation method thereof

A high-hardness, welding rod technology, applied in the direction of welding equipment, welding media, manufacturing tools, etc., can solve the problems of weld crack resistance, hardness and wear resistance that cannot meet the standards, so as to improve the hardness, refine the grain, The effect of improving crack resistance

Active Publication Date: 2020-11-13
内蒙古一机集团神鹿焊业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to provide a high-hardness wear-resistant surfacing welding electrode, which is used to solve the problem that the crack resistance, hardness and wear resistance of the welding seam filled with the existing electrode cannot meet the standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In this embodiment, the high-hardness wear-resistant surfacing welding electrode provided includes a welding core and a coating coated on the surface of the welding core. The coating is composed of the following components in mass percentages: 25% marble, 20% fluorite %, zircon 1%, graphite 4%, quartz 3%, tungsten carbide 21%, titanium iron 1%, molybdenum iron 3%, high carbon ferrochrome 10%, vanadium iron 12%.

[0022] The welding rod preparation process that present embodiment provides is as follows:

[0023] (1) Weigh each component according to the mass percentage of the drug skin formula in this embodiment, and after mixing evenly, add potassium sodium water glass to the uniformly mixed material, and after stirring evenly, obtain the drug skin mixture, wherein the potassium sodium water glass The addition amount is 25% of the total weight of the drug skin material;

[0024] (2) Press-coat the coating mixture on the outside of the welding core, and dry it at a high...

Embodiment 2

[0030] In this embodiment, the high-hardness wear-resistant surfacing welding electrode provided includes a welding core and a coating coated on the surface of the welding core. The coating is composed of the following components in mass percentages: marble 27%, fluorite 22% , 2% zircon, 3% graphite, 1% quartz, 18% tungsten carbide, 2% ferro-titanium, 3% ferro-molybdenum, 11% high-carbon ferrochrome, and 11% ferro-vanadium.

[0031] The preparation process is as described in Example 1.

[0032] At the same time, through the detection of the deposited metal of the high-hardness wear-resistant surfacing welding electrode, the hardness of the deposited metal is HRC 60, and the mass percentage content of the following components can be known through chemical composition analysis:

[0033] C: 1.60%; Cr: 4.70%; Mo: 1.06%; V: 4.20%; W: 9.50%;

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Abstract

The invention discloses a high-hardness wear-resistant overlaying welding electrode, and relates to the technical field of special welding electrodes. The high-hardness wear-resistant overlaying welding electrode comprises a welding core and a coating coated onto the surface layer of the welding core, wherein the coating is composed of the following components in percentage by mass: 24%-28% of marble, 19%-23% of fluorite, 1%-3% of zirconite, 2%-5% of graphite, 1%-3% of quartz stone, 17%-21% of tungsten carbide, 1%-4% of ferrotitanium, 1%-5% of ferromolybdenum, 9%-13% of high-carbon ferrochromeand 10%-14% of ferrovanadium. The invention further provides a preparation method of the high-hardness wear-resistant overlaying welding electrode. According to the high-hardness wear-resistant overlaying welding electrode, lots of tungsten carbide, chromium carbide, vanadium carbide and other carbides are formed in deposited metal after the welding electrode is welded, by adding a certain amountof carbon, tungsten, chromium, vanadium and other substances into the coating of the welding electrode, so that the hardness and the wear resistance of the deposited metal are improved; and meanwhile, the effect of refining crystal grains is achieved by adding a certain amount of molybdenum, so that the crack resistance of the deposited metal is further improved.

Description

technical field [0001] The invention relates to the technical field of special welding electrodes, in particular to a high-hardness wear-resistant surfacing welding electrode and a preparation method thereof. Background technique [0002] Welding rods are metal strips that are melted and filled at the joints of welding workpieces during gas welding or electric welding. In special fields, the requirements for welding rods are also different. In production practice, the driving wheels of a crawler vehicle produced by a customer adopt C, Si , Mn, Cr, Ni alloy system is integrally cast. In order to make the hardness and wear resistance of the meshing parts on both sides of the gear teeth meet the requirements of use, the process adopts arc welding surface welding, which can greatly reduce the cost and make the active The overall working life of the gear is extended. However, due to the complex force of this part, after surfacing welding, it is required that the weld metal has h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/02B23K35/362B23K35/40
CPCB23K35/0266B23K35/362B23K35/40
Inventor 张敏王建功郭耀刘成东闫俊峰康海龙
Owner 内蒙古一机集团神鹿焊业有限公司
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