铸铁件焊接坡口的设计很大程度上影响焊缝的特性并最终影响其服役性能。在薄型铸铁件的焊接时 ,应当开出单面V形或单面U形坡口。用镍基填充金属 (焊条 )焊接时 ,考虑到熔池流动性偏低的因素 ,坡口角度应有所增加。同样 ,由于用镍基电极 (焊条 )焊接比用标准的钢电极焊接获得的 The design of the welding groove of the cast iron greatly affects the characteristics of the weld and ultimately its serviceability. In the thin cast iron welding, should be opened out of single-sided V-shaped or U-shaped groove. Nickel-based filler metal (electrode) welding, taking into account the pool of low mobility factors, bevel angle should be increased. Also, since nickel-based electrodes (electrodes) are welded as compared with standard steel electrodes