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。
The orthogonal pickling tests for 2 mm-thick 625 alloy cold - rolled sheets were conducted by using the alkali washing- mixed acid pickhng 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℃. Mter pickling and finishing, the sheet surfaces of 2B level could be ganed and performance indexes are equivalent to those of the imported sheets.
作者
任书旺
罗利阳
王新鹏
张春林
宁天信
REN Shuwang;LUO Liyang;WANG Xinpeng;ZHANG Chunlin;NING Tianxin(Luoyang Ship Material Research Institute, Luoyang 471023, China)
出处
《材料开发与应用》
CAS
2017年第6期56-61,共6页
Development and Application of Materials
基金
河南省扶持企业自主创新资金项目(TZ-J11304)
关键词
625合金
碱洗
混酸酸洗
625 alloy
alkali washing
mixed-acid pickling
