采取严格清理焊接区、高焊材纯净度、强熔池保护及控制线能量等措施消除了蒙乃尔合金焊接中的气孔和热裂纹，保证了产品焊接质量。
By strictly clearing up weld zone, improving welding material's purity, strengthening molten pool's shield and controlling energy input etc measures, weld zone's hot crack and blowhole were prevented.
结果表明，在侧吹保护气体的条件下，激光深熔焊接能有效地避免高强度镀锌钢热影响区的软化和控制焊缝气孔及焊接接头裂纹的产生。
By adopting blowing side protective gas, the problem that gas hole was easy to form owed to evaporation of zinc and moisture of circumstances in laser...
焊接方法为脉冲熔化极混合气体保护焊，焊接板的中心裂纹处于焊缝与热影响区之间的熔合区。
The welding method used was a PC-GMAW process with mixture gases shielding. Central crack for the welded plate was located in the fusion zone between welding seam and heat-affected zone.
CO2气体保护焊接头的硬度值明显较双丝埋弧焊接头的硬度值高，硬度值在热影响区出现峰值。
The hardness of welded joints obtained by double-wire submerged arc welding is significantly better than that obtained by CO2 gas shielded. The peak hardness appears in the heat affected zone.
CO2气体保护焊接头的硬度值明显较双丝埋弧焊接头的硬度值高，硬度值在热影响区出现峰值。
The hardness of welded joints obtained by double-wire submerged arc welding is significantly better than that obtained by CO2 gas shielded. The peak hardness appears in the heat affected zone.
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