气焊是各个厂矿普遍使用的焊接方法之一,而且以手工操作为主。尤其是有色金属及其合金的焊接技术较难掌握,特别是在焊接时有害气体对焊缝金属的影响很大,导致焊缝金属的机械性能及焊接质量发生重大变化。主要对炼铁厂煤粉车间空压机和氮压机的压力表连接接头,在气焊时各有害气体及化合物对焊缝质量影响及消除预防的有效措施加以论述。 Gas welding is commonly used in various factories and mines one of the welding methods, and mainly manual operation. In particular, non-ferrous metals and their alloys welding technology is more difficult to grasp, especially in the welding of harmful gases on the weld metal has a great impact, resulting in weld metal mechanical properties and welding quality have undergone major changes. Mainly on the coal pulverizer pulverizer pressure cooker and nitrogen pressure gauge connector, the gas in the harmful gases and compounds on the weld quality and elimination of effective measures to be discussed.