一、用途与特点1.NZA 7—300—9型程控脉冲钨极氩弧全位置焊管机是为我国电站锅炉,石油化工,原子能和造船等工业中的管道焊接而研制的。本焊机能对管径为(?)30～45毫米的不锈钢,合金钢,炭钢等进行全位置对接焊,不加填丝,不开剖口,一次可焊造管厚为1～5毫米。加填丝后,管壁厚度可适当增加。焊接(?)42的管子时,焊矩可通过的最小管壁距为54毫米。 First, the use and features 1. NZA 7-300-9-type program-controlled pulse TIG full position welding machine for China’s power plant boilers, petrochemicals, nuclear and shipbuilding industries such as pipe welding developed. The welding machine can diameter (?) 30 ~ 45 mm of stainless steel, alloy steel, carbon steel, such as all-position butt welding, without filling wire, not open section, a weld pipe thickness can be 1 to 5 Mm. After filling wire, the wall thickness may be appropriate to increase. When welding the tube of (?) 42, the minimum wall distance through which the welding torch can pass is 54 mm.