Horizontal shaft should be level,vertical shaft should be straight; Roller position is stable,slider flexible but not swing, and smooth to adjust.
Position of inductor (1 ~ 3 coils ):
Distance from fore-end to squeeze roller center line is 1~1.5 times pipe diameter;inner diameter is 1.2~1.5 times pipe’s outer diameter.
Ferrite rods (impedor)’s position:fore-end line up with the squeezing roller center line,cross section is bigger than 70% inner diameter of tubes, minimum length is longer than the length that squeezing roller diameter plus inductor length.
V opening angle: for carbon steel material , it should be 30o~40o; For stainless steel anonferrous metal , it should be 50o~80o.
Methods to increase welding speed :
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