通常点焊嘴材料为紫铜,这种嘴子导电性好,加工方便,但是硬度较低,每个嘴子只能焊200个产品,满足不了生产的需要。采用新研制的铬青铜焊嘴;平均每个嘴子能焊500多个产品,提高效率20多倍,并提高了焊接质量,减少了修、锉嘴子时间。工艺过程 1.配料加铬粉1～2%,其余为紫铜。用木炭、碎玻璃做覆盖剂。 2.熔化熔化是在二硅化钼炉和碳硅棒,箱式SRJX-4-13电炉内进行,坩埚为石墨坩 Usually point welding nozzle material is copper, the mouth of good conductivity, easy processing, but lower hardness, each nozzle can only be welded 200 products, can not meet the production needs. The newly developed chrome bronze tip; the average per nozzle can be welded more than 500 products, improve efficiency 20 times, and improve the welding quality, reduce repair, file mouth time. Process 1. Ingredients plus chromium 1 ~ 2%, the rest is copper. Cover with charcoal, broken glass. 2. Melting and melting is carried out in a molybdenum disilicide furnace and carbon silicon rod, box SRJX-4-13 electric furnace, the crucible is a graphite crucible