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Anti-corrosion and wear-resistant coating and coating method thereof

An anti-corrosion and wear-resistant, coating technology, applied in the direction of coating, superimposed layer plating, metal material coating process, etc., can solve the problem of high price, and achieve the effect of low cost, high surface hardness and good bonding

Active Publication Date: 2016-01-27
LINHAI SHENGTIAN WASHING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ni-based and Co-based alloy powders with good wear resistance and corrosion resistance are usually used in laser cladding on the surface of metal substrates, but due to their high price, it is difficult to popularize and apply them in the field of surface strengthening.

Method used

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  • Anti-corrosion and wear-resistant coating and coating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Surface pretreatment

[0029] Grind the H13 steel surface to be processed with a grinding wheel or sandpaper, remove rust, and remove oil stains with alcohol or acetone.

[0030] (2) Laser cladding surface strengthening coating preparation

[0031] Mixed powder: Fe-Mn-Cr alloy powder, powder ratio:

[0032] Fe powder: 35%

[0033] Mn powder: 25%

[0034] Cr powder: 10%

[0035] Al powder: 10%

[0036] Iron boron powder: 17%

[0037] Nano-Al 2 o 3 Powder: 2%

[0038] Ferrosilicon powder: 1%

[0039] Dry the powder at 100~120℃ for 1.5~2h to remove the moisture adsorbed on the powder surface;

[0040] Laser process parameters during the test: the output current is 130A, the scan rate is 180mm / min, the laser frequency is 10Hz, and the pulse width is 6.0ms. Using large-area multi-pass cladding method, the lap rate is 40%~80%;

[0041] (3) Post-treatment of cladding layer

[0042] The surface is ground and polished, and the surface of the sample is finely gro...

Embodiment 2

[0051] (1) Surface pretreatment

[0052] Grinding the surface of NAK80 mold steel to be processed with grinding wheel or sandpaper, removing rust, and removing oil stains with alcohol or acetone

[0053] (2) Laser cladding surface strengthening coating preparation

[0054] Mixed powder: Fe-Mn-Cr alloy powder, powder ratio:

[0055] Fe powder: 31.5%

[0056] Mn powder: 30%

[0057] Cr powder: 12%

[0058] Al powder: 12%

[0059] Iron boron powder: 10%

[0060] Nano Al2O3 powder: 4%

[0061] Ferrosilicon powder: 0.5%

[0062] Dry the powder at 100~120℃ for 1.5~2h to remove the moisture adsorbed on the powder surface;

[0063] Laser process parameters during the test: the output current is 110A, the scan rate is 100mm / min, the laser frequency is 6Hz, and the pulse width is 6.0ms. Using large-area multi-pass cladding method, the lap rate is 40%~80%;

[0064] (3) Post-treatment of cladding layer

[0065] The surface is ground and polished, and the surface of the sample i...

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Abstract

The invention discloses a metal surface anti-corrosion wear-resisting coating which is prepared from the following raw material components in percentage by mass: 20-30% of Mn powder, 7-12% of Cr powder, 7-12% of Al powder, 10-25% of ferro-boron powder, 1-4% of nano Al2O3 powder and 0.5-1.0% of silicon iron powder. By adopting the coating disclosed by the invention, a substrate, a cladding layer and a nitriding layer are well combined without gap, looseness or crack, and the coating is fine in texture structure crystal grain, high in surface hardness, good in corrosion resistance and atmosphere corrosion resistance, and stable in coating quality. In addition, the coating disclosed by the invention is low in cost of a machining method and free of waste gas or waste slag discharge in the machining process.

Description

technical field [0001] The invention relates to the surface treatment technology of metal parts, in particular to an anti-corrosion and wear-resistant coating and a coating method thereof. Background technique [0002] Corrosion and wear of metal materials have become the main failure modes, and the economic losses caused are astonishing. According to statistics, the annual loss of steel due to corrosion and wear accounts for 1 / 10 of the world's steel production, and the annual loss due to corrosion and wear in my country is nearly 400 billion yuan. Therefore, in order to improve the corrosion resistance and wear resistance of steel, it is an economical and effective way to prepare anti-corrosion and wear-resistant coatings on the surface of metal substrates. [0003] Ni-based and Co-based alloy powders with good wear resistance and corrosion resistance are usually used in laser cladding on the surface of metal substrates, but due to their high price, it is difficult to pop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/38C23C28/00C23C24/10C23C8/38
Inventor 戴晟朱流方淳王金芳高玉新方志刚程虎王佳伟秦未王刚
Owner LINHAI SHENGTIAN WASHING MACHINERY
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