Analysis of Cracking Causes and Control for Cracking of Round Steel
In view of the problem of cracking on the surface of round steel processing,through cold heading experiment,metallographic structure analysis,electron microscope fracture morphology and EDS inclusion analysis,and on-site process adjustment and production tracking,the genetic law of round steel surface defect process was found,and the results showed that the surface crack of round steel was caused by the existence of subcutaneous bubbles or surface pinhole defects in the casting billet,and the subsequent rupture and expansion in the rolling process.
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