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一、填空1 电渣焊焊剂的作用有 :、、。2 立焊有两种焊接方向 ,一种是 ,另一种是。目前使用最广泛的是。3 ＺＸＧ— 30 0型焊机 ,其中Ｚ代表、Ｘ代表、Ｇ代表、30 0代表。4 ＣＯ2 气体保护焊时 ,为减少焊缝的氢气孔 ,必须彻底清除焊丝及焊接表面的以及对ＣＯ2 气体进行。二、
First, fill in the blank 1 Electroslag welding flux role: ,,. Two vertical welding There are two kinds of welding direction, one is, the other is. Currently the most widely used is. 3 ZXG-30 0-type welder, where Z representatives, X representatives, G representatives, 30 0 representatives. 4 CO2 gas shielded welding, in order to reduce the weld hydrogen hole, the wire and welding surfaces must be completely removed and the CO2 gas. two,