whether torsion angle － torque curve can be used as a method for judging the steel wire delamination?
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of course, it can be used as a method for judging the steel wire delamination，and the appearance of fracture after delamination steel wire is spiral，the peak decline is because steel wire surface occurs cracks. The wire drawing die cone angle and pass compression ratio have influence on steel wire delamination．drawing die nibs find in wococarbide. The steel wire delamination can be delayed by adopting the method of multi-pass and small compression ratio．
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