在铌酸锂、钽酸锂单晶和其他高温制取晶体的生产中,供周转使用的铂坩埚,经常会遇到渗漏或破裂等现象。一般采取重熔后再加工,不仅造成经济损失,而且影响生产的正常进行。采用补焊方法修复坩埚,收到了一定经济效果,仅工业化单晶生产中,每年可节约一万元以上。现将补焊工艺介绍如下: 1.火焰和焊炬的选择 In the production of lithium niobate, lithium tantalate single crystals and other high-temperature production crystals, platinum crucibles for turnaround often encounter leakage or rupture. Generally take remelting and then processing, not only cause economic losses, but also affect the normal production. The use of repair welding method crucible repair, received a certain economic effect, only the industrialization of single crystal production, annual savings of more than ten thousand yuan. Bonding process will now be introduced as follows: 1 flame and torch selection