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METHOD FOR MANUFACTURING COLD-ROLLED STEEL SHEET EXCELLENT IN TERMS OF CHEMICAL CONVERTIBILITY AND POST-COAT CORROSION RESISTANCE AND FAVORABLE IN TERMS OF SLIDABILITY
METHOD FOR MANUFACTURING COLD-ROLLED STEEL SHEET EXCELLENT IN TERMS OF CHEMICAL CONVERTIBILITY AND POST-COAT CORROSION RESISTANCE AND FAVORABLE IN TERMS OF SLIDABILITY
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机译:在化学对流性和涂层后耐蚀性方面以及在可滑动性方面有利的制造冷轧钢板的方法
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摘要
PROBLEM TO BE SOLVED: To provide a method for manufacturing a cold-rolled steel sheet excellent in terms of chemical convertibility and post-coat corrosion resistance and favorable in terms of slidability.;SOLUTION: A cold-rolled steel sheet including 0.5-2.0 mass% of Si is thermally annealed within a non-oxidative atmosphere, and after at least 0.5 g/m2 of the surface of the cold-rolled steel sheet has subsequently been dissolved via an acid wash, a Zn-Ni alloy having an Ni content of 5 wt.% or above and 20 wt.% or below is electrodeposited on the cold-rolled steel sheet surface at an adhesion rate of 100-5000 g/m2. The heating temperature of the thermal annealing is 900°C or below. The non-oxidative atmosphere is obtained by introducing a gaseous mixture of nitrogen and hydrogen. It is desirable for the hydrogen content of the non-oxidative atmosphere to be 10 vol.% or less.;COPYRIGHT: (C)2015,JPO&INPIT
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机译:解决的问题:提供一种化学转化率和涂后耐蚀性优异,滑动性优异的冷轧钢板的制造方法。解决方法:质量为0.5〜2.0的冷轧钢板。 %的Si在非氧化气氛中被热退火,并且在至少0.5g / m 2 Sup>的冷轧钢板的表面随后通过酸洗溶解后,Zn将Ni含量为5wt。%以上且20wt。%以下的-Ni合金以100-5000g / m 2 Sup>的附着率电沉积在冷轧钢板表面上。 。热退火的加热温度为900℃以下。通过引入氮气和氢气的气态混合物获得非氧化性气氛。非氧化性气氛中的氢含量优选为10体积%以下。版权所有:(C)2015,日本特许厅&INPIT
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