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Powder for laser-cladding aluminum bronze alloy gradient coating layer and preparation method

A laser cladding and gradient coating technology, applied in metal material coating process, coating and other directions, can solve the problems of shortening the service life and affecting the service life of the furnace roll and the surface quality of the processed steel plate, and achieves excellent corrosion resistance, high Effect of hardness, high environmental resistance

Active Publication Date: 2018-07-24
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the long-term operation of ships and submarines in the seawater environment, seawater corrosion leads to a reduction in their service life
The high-temperature annealing furnace rolls in the metallurgical industry are exposed to high-temperature environments for a long time and early failure due to friction and wear during operation, resulting in various defects on the surface of the furnace rolls, which seriously affect the service life of the furnace rolls and the surface quality of the processed steel plate

Method used

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  • Powder for laser-cladding aluminum bronze alloy gradient coating layer and preparation method
  • Powder for laser-cladding aluminum bronze alloy gradient coating layer and preparation method
  • Powder for laser-cladding aluminum bronze alloy gradient coating layer and preparation method

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Effect test

Embodiment 1

[0033] The alloy powder is composed of nine elements: Al, Cu, Fe, Ni, Mn, Si, Cr, B and Mo, among which the Al element is 7%wt, Fe and Ni are equal mass fractions, and the total amount of Fe and Ni elements is 1 %wt, the total amount of Mn, Si, Cr, B and Mo elements is 0.5%wt, and the balance is Cu. The purity of the alloy powder is not lower than 99.9%, and the particle size of the powder used is 45-100 μm.

[0034] The method for preparing an aluminum bronze alloy gradient coating by laser cladding of the above-mentioned alloy powder is as follows:

[0035] 1) Base material pretreatment, use CNC wire cutting machine to process 316 stainless steel base material into the required sample size, and the surface of the base material to be laser treated is polished with 100#, 200# SiC metallographic sandpaper to remove the oxide layer until the metal is exposed gloss, then sandblasting, ultrasonic cleaning with alcohol or acetone, and drying for later use;

[0036] 2) Weigh the two...

Embodiment 2

[0041] The alloy powder is prepared by vacuum atomization method, including Al, Cu, Fe, Ni, Mn, Si, Cr, B and Mo elements, wherein the Al element is 6.72%wt, Fe and Ni are equal mass fractions, Fe and The total amount of Ni elements is 4%wt, the total amount of Mn, Si, Cr, B and Mo elements is 0.8%wt, and the balance is Cu. The purity of the alloy powder is not lower than 99.9%, and the particle size of the powder used is 45-100 μm.

[0042] The method for preparing an aluminum bronze alloy gradient coating by laser cladding of the above-mentioned alloy powder is as follows:

[0043] 1) Base material pretreatment, use CNC wire cutting machine to process 316 stainless steel base material into the required sample size, and the surface of the base material to be laser treated is polished with 100#, 200# SiC metallographic sandpaper to remove the oxide layer until it is exposed Metallic luster, then sandblasting, ultrasonic cleaning with alcohol or acetone, drying for later use; ...

Embodiment 3

[0049] The alloy powder is composed of nine elements: Al, Cu, Fe, Ni, Mn, Si, Cr, B and Mo, among which the Al element is 6.44%wt, Fe and Ni are equal mass fractions, and the total amount of Fe and Ni elements is 8 %wt, the total amount of Mn, Si, Cr, B and Mo elements is 1.5%wt, and the balance is Cu. The purity of the alloy powder is not lower than 99.9%, and the particle size of the coating powder is 45-100 μm.

[0050] The method for preparing an aluminum bronze alloy gradient coating by laser cladding of the above-mentioned alloy powder is as follows:

[0051] 1) Base material pretreatment, use CNC wire cutting machine to process 316 stainless steel base material into the required sample size, and the surface of the base material to be laser treated is polished with 100#, 200# SiC metallographic sandpaper to remove the oxide layer until the metal is exposed gloss, then sandblasting, ultrasonic cleaning with alcohol or acetone, and drying for later use;

[0052] 2) Weigh...

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Abstract

The invention relates to a powder for a laser-cladding aluminum bronze alloy gradient coating layer and a preparation technology method. The alloy powder is prepared from nine elements, such as Al (aluminum), Cu (copper), Fe (iron), Ni (nickel), Mn (manganese), Si (silicon), Cr (cobalt), B (boron) and Mo (molybdenum),wherein the amount of Al element is 6 to 7%; the amount of Fe element is equal tothe amount of Ni element; the total amount of Fe element and Ni element is 1 to 12wt%; the total amount of Mn element, Si element, Cr element, B element and Mo element is 0.5 to 2wt%; the balance element is Cu. The novel aluminum bronze alloy gradient coating layer prepared by a laser cladding technique has the advantages that the hardness is high, the corrosion-resistant property, abrasion-resistant property and high temperature oxidizing-resistance property are excellent, and the like; the novel aluminum bronze alloy gradient coating layer can be widely applied to the repair and re-manufacturing of mechanical equipment in the fields of metallurgy, power, ocean transportation and the like, and the obvious economic benefits and social benefits are realized.

Description

technical field [0001] The invention belongs to the technical field of surface engineering, and in particular relates to a powder used for preparing an aluminum bronze alloy gradient coating on the surface of austenitic stainless steel by laser cladding and a preparation method thereof. Background technique [0002] Laser surface cladding, also known as laser coating, refers to the high energy density greater than 10 4 W / cm 2 Under the action of the laser beam, the powder with special properties such as wear resistance, corrosion resistance, and high temperature oxidation resistance is rapidly melted and solidified, so that a metallurgical bonding alloy layer without cracks, pores, and other defects is obtained on the surface of the substrate. The gradient coating prepared by laser cladding has the characteristics of low dilution rate, small heat-affected zone, and gradient changes in composition and performance. After the base material is treated by laser cladding, its we...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C9/01
CPCC22C9/01C23C24/103C23C24/106
Inventor 张松陶稀鹏王冲宗洧安崔雪吴臣亮张春华
Owner SHENYANG POLYTECHNIC UNIV
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