本文在充分地研究钢管冷轧辊的技术条件和市售的等离子弧堆焊粉末性质的基础上,更换了目前冷轧辊的基体材料,研制了适合堆焊钢管冷轧辊曲面型工作面的小型等离子弧粉末焊枪,选出了合适的合金粉末,确定了最佳工艺参数,并拟定了防止堆焊层裂纹的工艺措施,为钢管冷轧辊延长使用寿命、降低成本、修复旧轧辊开辟了一个新的途径。 On the basis of fully researching the technical conditions of cold rolled steel tube and the properties of commercially available plasma arc surfacing powder, the current base material of cold roll was replaced and a small plasma arc suitable for cold rolled surfacing surface of surfacing steel tube was developed Powder welding gun, selected the appropriate alloy powder, determined the best process parameters, and developed measures to prevent the crack of the surfacing layer of steel pipe cold roll to extend the service life, reduce costs and repair the old roll opened up a new way .