Adding no ore powders which helps to act as stable arc,slagging and creating gas,the electrode core is with high resistance and easy to occur red or the coating crack,and so on.

• 自行研制了一种特殊的堆焊焊条,其药皮中没有加入任何用于稳弧、造渣和造气等作用的矿石粉,焊芯电阻大,焊接时极易出现焊芯和药皮发红、药皮开裂等现象,说明了该焊条的工艺性能复杂。