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脱节滑轨是管轧机中的重要零件,它要求在A3钢上堆焊6mm厚的高强度耐磨铜合金。原工艺规定用美产AMPCO焊条手工堆焊,在分析了堆焊层的化学成份和机械性能的基础上,选择了国产的几种铝青铜焊丝,进行熔化极氩弧自动堆焊试验。与手工堆焊相比,熔化极氩弧自动堆焊预热温度低,操作简单,焊缝成型美观,性能满足要求。 1.钢上堆焊铝青铜的可焊性
Off-slide is an important part of the tube rolling mill, which requires the hard surfacing on the A3 steel 6mm thick high-strength wear-resistant copper alloy. The original process regulations with the American AMPCO electrode manual surfacing, welding layer in the analysis of the chemical composition and mechanical properties based on the selection of several domestic aluminum bronze wire, the welding of automatic welding of argon arc welding test. Compared with manual surfacing, automatic melting of argon arc welding submerged arc preheating temperature is low, simple operation, weld appearance, performance to meet the requirements. 1. Steel welding aluminum bronze weldability