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熱鍍鋅板及其生產(chǎn)方法與流程

文檔序號:11900148閱讀:來源:國知局

技術(shù)特征:

1.一種熱鍍鋅板,其特征在于,所述熱鍍鋅板的化學(xué)成分質(zhì)量百分比為:C,0.010-0.016%;Si≤0.03%;Mn,0.15-0.25%;P≤0.010%;S≤0.010%;Alt,0.045-0.08%;N≤0.0030%;B,0.0018-0.0028%;余量為Fe和不可避免的雜質(zhì)。

2.根據(jù)權(quán)利要求1所述的熱鍍鋅板,其特征在于:所述熱鍍鋅板的化學(xué)成分質(zhì)量百分比為:C,0.01%;Si,0.015%;Mn,0.25%;P,0.008%;S,0.01%;Alt,0.08%;N,0.003%;B,0.0028%;余量為Fe和不可避免的雜質(zhì)。

3.根據(jù)權(quán)利要求1所述的熱鍍鋅板,其特征在于:所述熱鍍鋅板的化學(xué)成分質(zhì)量百分比為:C,0.012%;Si,0.02%;Mn,0.2%;P,0.009%;S,0.008%;Alt,0.06%;N,0.0025%;B,0.0022%;余量為Fe和不可避免的雜質(zhì)。

4.根據(jù)權(quán)利要求1所述的熱鍍鋅板,其特征在于:所述熱鍍鋅板的化學(xué)成分質(zhì)量百分比為:C,0.016%;Si,0.03%;Mn,0.15%;P,0.01%;S,0.01%;Alt,0.045%;N,0.0015%;B,0.0018%;余量為Fe和不可避免的雜質(zhì)。

5.一種權(quán)利要求1~4任一項(xiàng)所述熱鍍鋅板的生產(chǎn)方法,包括以下步驟:鐵水預(yù)處理→轉(zhuǎn)爐→RH精煉→板坯澆注→鋼坯精整→板坯加熱→粗軋→精軋→精軋后卷曲→熱軋卷開卷→熱軋卷焊接→酸洗→冷軋→冷軋后卷曲→冷硬卷開卷→冷硬卷焊接→清洗→退火→熱鍍鋅→光整→拉矯→鈍化→涂油→卷曲成鋼卷,其特征在于,工藝中控制如下參數(shù):

熱軋階段,板坯加熱溫度為1150-1200℃,終軋溫度為910-930℃,

精軋后,層流冷卻階段采用后段稀疏冷卻,出精軋機(jī)組鋼板弛豫冷卻15~35s,

精軋后卷曲溫度為670-710℃,卷曲后進(jìn)入保溫坑保溫,出保溫坑的溫度控制在350-400℃,再冷卻至室溫。

6.根據(jù)權(quán)利要求5所述的熱鍍鋅板的生產(chǎn)方法,其特征在于:退火溫度采用705~715℃;退火后采用光整工藝,光整延伸率為0.8-1.6%。

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