Wear-resistant anti-corrosion electric arc spraying cored wire for protecting surface of copper matrix
A powder core wire, arc spraying technology, applied in coating, fusion spraying, metal material coating technology and other directions, can solve the problems of low bonding strength, decreased thermal conductivity of tuyere, poor bonding between reinforcement layer and substrate, etc. Antioxidant properties are improved, bonding strength is improved, and bonding strength is high
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[0016] Example 1
[0017] The outer cover is made of a copper-aluminum alloy strip with a width of 10mm and a thickness of 0.2mm (the mass percentage of aluminum is 2%), which is made into a powder core wire of Ф2mm, and the powder core filling rate is 32%. The content of the powder core wire medicinal powder by mass percentage is as follows: metallic chromium: 1%; metallic zirconium: 0.5%; metallic silver: 0.1%; metallic copper: 98.4%.
[0018] The powder core wire made according to the above specifications is arc sprayed on the pure copper substrate, and then the sprayed layer is formed by heat treatment. The HV hardness is 215, the softening temperature is 805°C, the bonding strength is 60MPa, and the thermal conductivity is 86% of pure copper.
Example Embodiment
[0019] Example 2
[0020] The outer cover is made of a copper-aluminum alloy strip with a width of 10mm and a thickness of 0.2mm (the mass percentage of aluminum is 2.5%), which is made into a powder core wire of Ф2mm, and the powder core filling rate is 34%. The content of the powder core wire medicinal powder by mass percentage is as follows: metallic chromium: 1.2%; metallic zirconium: 0.8%; metallic silver: 0.3%; metallic copper: 97.7%.
[0021] The powder core wire made according to the above specifications is arc sprayed on the pure copper substrate, and then the sprayed layer is formed by heat treatment. The HV hardness is 229, the softening temperature is 806°C, the bonding strength is 57MPa, and the thermal conductivity is 84% of pure copper.
Example Embodiment
[0022] Example 3
[0023] The outer cover is made of a copper-aluminum alloy strip with a width of 10mm and a thickness of 0.2mm (the mass percentage of aluminum is 3%), which is made into a powder-cored wire of Ф2mm, and the powder-core filling rate is 35%. The content of the powder core wire medicinal powder by mass percentage is as follows: metallic chromium: 1.5%; metallic zirconium: 1%; metallic silver: 0.5%; metallic copper: 97%.
[0024] The powder-cored wire made according to the above specifications is arc sprayed on the pure copper substrate, and then the sprayed layer is formed by heat treatment. The HV hardness is 243, the softening temperature is 810°C, the bonding strength is 54MPa, and the thermal conductivity is 82% of pure copper.
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