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一、前言近年来,为了焊接施工的合理化、省力化,CO_2焊接达到了非常普及的程度。但是CO_2焊接飞溅大,焊缝外观不好。针对这些严重缺点,想采用以高纯氩与10～20％CO_2的混合气体为保护介质的MAG焊接来解决这一问题。但是,因高纯氩价格昂贵,而且使用高纯氩的MAG焊接仅用于高级构件制造上。鉴于这种情况,又研制了经济的焊接用粗氩。焊接用粗氩是高纯氩的原料,其成分详见表1: 这种粗氩已在施工现场应用。下面就这种
I. Introduction In recent years, in order to rationalize the welding construction, labor-saving, CO_2 welding has reached a very popular level. However, CO_2 welding spatter, the weld appearance is not good. In response to these serious shortcomings, we wanted to solve this problem by using MAG welding with a mixture of high-purity argon and 10-20% CO 2 as a protective medium. However, MAG welding, which is expensive due to high-purity argon and uses high-purity argon, is only used for manufacturing of higher-grade components. In view of this situation, but also developed an economical welding of crude argon. Welding crude argon is the raw material of high purity argon, its composition see Table 1: This crude argon has been applied in the construction site. Here’s what it is