汽车曲轴用非调质钢铸坏裂纹控制与冷却系统的优化研究
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中图分类号：U461 收稿日期：2025-04-17
DOI： 10.19999/j.cnki.1004-0226.2025.06.027
Abstract：In this paper，the surface crack of untempered steel 38MnVS6 for automotive crankshaft during continuous casting was studied.Themechanismofcrackinducedbyhightemperaturemechanicalpropertiesandunevencoolingwasanalyzed.Byoptimizing theheightoftenoleadajustingteaterdtributionintesecondarycoingzone，theolinguiforityoftebiletsefec tivelyimprovedandthetemperaturereturnrateandtransversetemperaturedierenearereduced.Theresultsshowthatasoable controlofcooling conditions can significantly improve the surface qualityofthe biletandreduce thecrack defects.
Key words：Automobile crankshaft;Non-tempered steel;Continuous casting crack;High temperature plasticity
1前言
汽车曲轴对材料性能要求极高，非调质钢因其良好的强韧性与经济性，成为优选材料。（剩余4009字）