国产长久久久久久_亚洲热日韩精品在线_国产一级高清视频免费在线观看_岛国黄色国产中文在线观看_国产性爱网站亚洲黄色一级片_日韩精品无码av成人观看_日本制服丝袜一区二区三区_久久人妻视频网黑人_亚洲成年少妇丰满网_99riav9精品香蕉免费大视频

The increase in welding current of the automatic spot welding machine is not large, and it cannot affect the decrease in heat generation caused by the decrease in R. Whether the spot welding machine chooses a hard specification or a soft specification depends on the properties, thickness of the metal and the power of the welding machine used. The process of the spot welding machine is to turn on the cooling water; clean the surface of the weldment. When the workpiece and the electrode of the spot welding machine are fixed, the resistance of the workpiece depends on its resistivity. The welding time and welding current of the spot welding machine are within a certain range Can complement each other. Spot welders have upper and lower limits for the current and time required for metals with different properties and thicknesses. ---Zhongbang Welding Machine