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Laser deposited alloy welding powder

A technology of laser cladding and alloying, which is applied in the direction of welding medium, welding equipment, metal processing equipment, etc., can solve the problems of metal layer hardness, strength and matrix bonding fastness not meeting the requirements, not applicable, etc., and achieve considerable economic benefits, Cost saving, high hardness effect

Inactive Publication Date: 2008-11-05
上海市紧固件和焊接材料技术研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the alloy welding powder used in laser cladding technology still uses the welding powder used in the thermal spraying or plasma spraying process, but these welding powders are not suitable for repairing the worn surface of the roll in the rolling equipment, and the roll needs to be used in the rolling process. Withstanding dozens of tons of pressure, the metal layer formed by the current alloy welding powder on the wear surface by laser cladding technology cannot meet the requirements in hardness, strength and bonding fastness with the substrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A laser cladding alloy welding powder, composed of nickel, silicon, boron, chromium, manganese, molybdenum, carbon and iron, wherein each component is 0.001% by weight, nickel is 0.5%, silicon is 0.5%, boron is 1.2% , chromium is 11.5%, manganese is 0.001%, molybdenum is 0.5%, carbon is 0.1%, and iron is 86.198%.

[0016] The preparation method of laser cladding alloy welding powder is as follows: select metal materials according to the above-mentioned raw material ratio, crush the metal materials into small materials, smelt them into liquids at high temperature in the smelting furnace, spray them with high-pressure water pumps, and cool them in the nozzle holes to form Metallurgical powder, screening (100-300 mesh), component inspection, packaging, and delivery.

[0017] The powder particle size of the final laser cladding alloy welding powder is 200 mesh; the hardness is 75HRC; the bonding strength is 92% of the original base material.

Embodiment 2

[0019] A laser cladding alloy welding powder, which is composed of nickel, silicon, boron, chromium, manganese, molybdenum, carbon and iron, wherein the components are 1.0% by weight, 1.2% by silicon, and 1.5% by boron , chromium is 13.0%, manganese is 0.5%, molybdenum is 1.0%, carbon is 0.18%, and iron is 81.62%.

[0020] The preparation method is as in Example 1.

[0021] The powder particle size of the final laser cladding alloy welding powder is 250 mesh; the hardness is 85HRC; the bonding strength is 96% of the original base material.

Embodiment 3

[0023] A laser cladding alloy welding powder, which is composed of nickel, silicon, boron, chromium, manganese, molybdenum, carbon and iron, wherein each component is 2.0% by weight, nickel is 2.0%, silicon is 1.6%, boron is 2.1% , chromium is 15.0%, manganese is 0.9%, molybdenum is 1.5%, carbon is 0.28%, and iron is 76.62%.

[0024] The preparation method is as in Example 1.

[0025] The powder particle size of the final laser cladding alloy welding powder is 300 mesh; the hardness is 80HRC; the bonding strength is 97% of the original base material.

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Abstract

The invention discloses laser deposited alloy welding powder, consisting of nickel, silicon, boron, chrome, manganese, molybdenum, carbon and iron, wherein, according to the weight percentage, all components are respectively 0.001 to 2.0 percent of nickel, 0.5 to 1.6 percent of silicon, 1.2 to 2.1 percent of boron, 11.5 to 15.0 percent of chrome, 0.001 to 0.9 percent of manganese, 0.5 to 1.5 percent of molybdenum, 0.1 to 0.28 percent of carbon and residual quantity of iron; the powder granularity of the laser deposited alloy welding powder is 100 to 300 meshes, the hardness thereof is not less than 55HRC and the adhesion strength thereof is not less than 90 percent of that of the original basic material. The laser deposited alloy welding powder has the advantages of being used for repairing the abraded surface of the roller parts of rolled steel equipments in the laser deposited technology process and saving the cost.

Description

【Technical field】 [0001] The invention relates to the field of welding powder, in particular to a laser cladding alloy welding powder. 【Background technique】 [0002] When mechanical equipment is in operation, large parts will wear out due to long-term operation. If they are not repaired, they will be scrapped. Therefore, countries all over the world attach great importance to the repair of worn parts. The common method is to use thermal spray welding, thermal spraying or plasma on the worn surface Spraying and other processes. A coat of metal is sprayed and then finished. Since the end of the 1990s, a new process, laser cladding, has emerged in the world. Its technical principle is to use high-energy-density laser beams to rapidly melt metal powders with different properties and the surface of the substrate, and the gold-containing layer and the substrate Forms a metallurgically bonded alloy cladding layer. Laser cladding has less thermal influence on the substrate and c...

Claims

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Application Information

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IPC IPC(8): B23K35/30
Inventor 李根荣姚富良刘汉光张志芸李少文陈捷
Owner 上海市紧固件和焊接材料技术研究所有限公司
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