Flux-cored wire for all position  Welding Electrode, the continuous process for automated production.
The main advantages of the process:

(1) good quality welding defects are usually produced in welded joints. Equal to the diameter of the pipe welded by hand under the head a few more than the number of semi-automatic welding head, the use of semi-automatic welding reduces the defect generation probability. Usually applied NR204, NR207 metal wire is a low hydrogen, while the more traditional manual welding using cellulosic type electrode. It can be seen, semi-automatic welding can reduce the hydrogen content of the weld. Meanwhile, the semi-automatic welding heat input is high, can reduce the weld cooling rate, hydrogen escape, and to help reduce and prevent cold cracking.

Table 3 Semi-automatic flux-cored self-protection under the reference to the welding process parameters

(2) high efficiency flux cored wire welding process into the continuous intermittent mode of production. Semi-automatic welding deposition volume, less than the manual welding bead, melting faster than cellulose under manual welding increased by 15% to 20%. Welding slag is thin, easy slag removal, slag layer to reduce the time.

(3) integrated, low cost semi-automatic welding equipment is versatile and can be used semi-automatic welding, arc welding can also be used for welding or other welding methods. Thickness of 8.7mm steel pipe by welding, for example; SMAW welders to complete at least three groups, only Group 2 semi-automatic welding welders, welders at least reduce the two, but also a corresponding reduction in the number of welders and auxiliary tooling number. At the same time. Effective utilization of high flux-cored welding groove is small, saving the use of filler metal, but also improves the welding speed, arc overall cost is only half the hand.

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