汽車曲軸用非調(diào)質(zhì)鋼鑄壞裂紋控制與冷卻系統(tǒng)的優(yōu)化研究

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中圖分類號：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

汽車曲軸對材料性能要求極高，非調(diào)質(zhì)鋼因其良好的強韌性與經(jīng)濟性，成為優(yōu)選材料。（剩余4009字）