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Analysis on Cause of Quenching Crack of Clutch Friction Flake Manufactured by 50CrVA
Pages: 215-217+222
Year: Issue:  4
Journal: Hot Working Technology

Keyword:  50CrVA steelquenching crackmicrostructure;
Abstract: The quenching crack of clutch friction flake was studied by OM and SEM. The inclusions, fracture surface morphology and microstructure of the original hot rolled sample and the quenched sample were analyzed. The mechanism of quenching crack was also discussed. The results show that the reasons for quenching crack are the inclusions of MnS in the hot rolled and quenched sampless; the uneven distribution of carbides and the sectional size of the sample for the quenching. Controlling the original steel and the ball annealing process can reduce or prevent the quenching crack.
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