60Si2Mn彈簧鋼加工開(kāi)裂原因分析

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中圖分類號(hào)：TF76 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1008-9500（2025）04-0078-03

DOI：10.3969/j.issn.1008-9500.2025.04.022

Analysis of Cracking Causes in 6oSi2Mn Spring Steel Processing

YANRuopu，CHEN Zhiyue （HBIS Group TangSteel Company，Tangshan ，China）

Abstract：The6OSi2Mnhot-rolledcoilpurchasedbyadomesticautomotive parts manufacturing planthas serious cracking problemsduringacidpickling，coldrolling，andcross cutting processesandcannotbeused.Acomprehensiveanalysisof the heating process，rollingproces，factorydecarburizationlayerdata，annealing process，ndpostannealingdecarburiation layerdata of6OSi2Mn springsteel shows thatusing fullhydrogenannealingonhot-rolledrawcoils （withoutacid washing） leads to severedecarburizationand abnormal growthofsurface feritegrainsonthesurfaceof the strip steel.Thesurface decarburizationlayerandabnormally grown feritegrains weakenthe intergranularbonding force，and whenthematerial bendsand deforms，cracks occur along the surface grainboundaries，ultimatelyresulting inquenchingfailureand processing cracking of the steel plate.

Keywords： spring steel; processing cracking; decarburized layer

隨著汽車行業(yè)的飛速發(fā)展，在保證車身強(qiáng)度的前提下，汽車輕量化逐漸成為眾多車企的關(guān)注點(diǎn)。（剩余1911字）