我厂使用的3台DN-25型点焊机,由于是采用地下水对电极头进行冷却,所以,使用一年后就出现了上下电极头每点焊1～2天就需要修复一次,数天后就需要更换电极头的现象。既影响生产又浪费材料。分析其原因,我们认为:我们使用的冷却水是未经过软化处理的硬水,在地下水中含有较多的矿物质。在点焊机工作时,冷却泵抽出的冷却水通过点焊机上下电极座水道孔,送到电极头,然后返回到冷却水箱进行循环冷 I use three DN-25 spot welding machine, because the groundwater is used to cool the electrode tip, so the use of the electrode tip appears after a year, each welding 1 to 2 days need to be repaired once, a few days later You need to replace the tip of the phenomenon. Both affect the production and waste of materials. Analysis of the reasons, we think: We use the cooling water is not softened hard water, groundwater contains more minerals. In spot welder work, the cooling water drawn by the cooling pump passes through the water hole of the top and bottom electrode seat of the spot welding machine, and is sent to the electrode tip, and then returned to the cooling water tank for circulating cooling