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川畸钢铁公司在水岛钢铁厂冷轧厂和千叶钢铁厂热轧厂的酸洗线上安装了日本钢铁界最大输出功率的激光焊接机,最近投入使用。冷轧厂在钢板轧制之前为清除表面氧化层要经过酸洗线处理,而实现酸洗线连续处理,就要将板卷的尾部同下一板卷的头部相焊接。这种情况过去一般采用将两个板卷端部对在一起施加电压的闪光电阻对焊,这种焊接方法的缺点是:①输入热量大;②由于合金钢焊接部分强度下降,不能通过酸
Chugai Steel Co., Ltd. recently installed a laser welding machine with the maximum output of the Japanese steel industry installed on the pickling line of the Shimashima Plant and the Chiba Plant’s hot-rolling mill. Cold rolling mill in the steel rolling before the surface to remove the oxide layer to go through the pickling line processing, and to achieve continuous pickling line, it is necessary to the end of the coil with the next roll of the first phase welding. In the past, the flash resistance butt welding which applied voltage to the ends of the two coils was used in the past. The disadvantages of this welding method are: (1) the heat input is large; (2) the welding strength of the alloy steel can not be reduced by the acid