非氧化性气体等离子弧切割法指氩-氢、氮、氮、-氢和氮-氩等离子弧切割,主要用于加工不锈钢、铝及其合金和铜等有色金属。 一、氩、氢等离子弧切割法的工艺特性 氩-氢等离于弧切割系使用Ar和H_2,的混合气(一般Ar占2/3、H_2,占1/3)作为工作气体的。如第二讲所述。Ar容易电离,因其原子量大,故等离子弧的动量,即冲力也大。而H_2的导热性和携热 Non-oxidizing gas plasma arc cutting means argon-hydrogen, nitrogen, nitrogen, hydrogen and nitrogen-argon plasma arc cutting, mainly used for processing stainless steel, aluminum and its alloys and copper and other non-ferrous metals. First, argon, hydrogen plasma arc cutting process characteristics Argon - hydrogen plasma cutting arc cutting using Ar and H_2, the mixture of gas (usually Ar accounted for 2/3, H_2, accounting for 1/3) as a working gas. As described in the second lesson. Ar easily ionized, because of its large atomic mass, so the momentum of the plasma arc, that is, the impact is also large. The H 2 thermal conductivity and heat