An anti-wrinkle structure with a pre-coated steel sheet and production method thereof
2013
一种抗折皱结构用预涂层钢板,其组分及wt%含量为:C:0.03~0.08%,Si≤0.03%,Mn:0.35~0.60%,P≤0.025%,S≤0.015%,solAl:0.02~0.06%,N≤0.007%,Ti:0.015~0.030%;生产步骤:铁水脱硫后经转炉冶炼并连铸成坯;经常规热轧后进行酸洗;冷轧;热镀锌;连续退火;光整、拉矫、彩涂。 本发明经加入微量Ti,并在冷轧热镀锌中控制光整延伸率在0.8~1.2%,能够保证本发明预涂层钢板的强度及抗折皱性能,而且还能满足力学性能在屈服强度RP0.2(或ReH)为250~300MPa,抗拉强度Rm为330~400MPa,断后伸长率A80mm为28%~40%,正面涂层膜厚为20~25μm,正面涂层性能:T弯值≤2T,杯突值≥8.0mm,且具有优良的冲压加工及耐蚀性能。
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