| 625合金冷轧板酸洗工艺研究 |
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| 引用本文： | 任书旺,罗利阳,王新鹏,张春林,宁天信.625合金冷轧板酸洗工艺研究[J].材料开发与应用,2017(6):56-61. |
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| 作者姓名： | 任书旺 罗利阳 王新鹏 张春林 宁天信 |
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| 作者单位： | 中国船舶重工集团公司第七二五研究所,河南洛阳,471023 |
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| 基金项目： | 河南省扶持企业自主创新资金项目 |
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| 摘 要： | 采用碱洗-混酸酸洗工艺对2 mm厚625合金冷轧板进行正交酸洗试验。结果表明:625合金冷轧板最佳的酸洗工艺为:首先在500℃~550℃质量分数为80%NaOH+20%NaNO_3的碱液中碱洗60 s~120 s,随后在45℃~50℃质量分数为20%HNO_3+4%HF的混酸溶液中酸洗30 s~60 s,酸洗及精整后板材表面质量达到2B级,各项性能指标与进口板材相当。
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| 关 键 词： | 625合金 碱洗 混酸酸洗 |
Pickling Process of Alloy 625 Cold-rolled Sheets |
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| Abstract: | The orthogonal pickling tests for 2 mm-thick 625 alloy cold-wlled sheets were conducted by using the alkali washingmixed acid pickling process.The results showed that the best pickling process for 625 alloy cold-rolled sheets is as follows:Firstly,the sheets should be alkali washed in 80％ NaOH + 20％ NaNO3 (w) for 60 ～ 120 s at 500 ～ 550 ℃ and then pickled 20％ HNO3 +4％ HF for 30 ～ 60 s at 45 ～ 50 ℃.After pickling and finishing,the sheet surfaces of 2B level could be ganed and performance indexes are equivalent to those of the imported sheets. |
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| Keywords: | 625 alloy alkali washing mixed-acid pickling |
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