热轧退火钛带酸洗工艺研究  

Study on the Pickling Process for Hot Rolled Annealed Titanium Strip

作　　者：刘自莲[1] 彭金辉[1] 郭胜惠[1] 常军[1] 曹占元 史亚鸣 陈楠[1] 

机构地区：[1]昆明理工大学,云南昆明650093 [2]云南钛业股份有限公司,云南楚雄651209

出　　处：《钛工业进展》2013年第4期19-23,共5页Titanium Industry Progress

基　　金：云南省省院省校科技合作专项项目(2011IB001);昆明理工大学分析测试基金(20130251)

摘　　要：酸洗是钛带冷轧前的重要工序之一,首先从酸的浓度及配比、酸洗时间、酸洗温度等方面对热轧退火后钛带卷的酸洗条件进行了实验室探究。结果表明,随着氢氟酸与硝酸体积比的降低,钛带的酸洗失重率逐渐降低,而酸洗所需时间逐渐增加。综合考虑酸洗的效果、速度及成本认为最佳酸洗工艺条件是:酸洗温度为40℃,酸洗液中氢氟酸体积分数为3%、硝酸体积分数为27%,酸洗时间为240 s时,酸洗效果最佳,此时,钛带试样失重率为1.12%。此外,研究发现,酸洗温度为25℃和55℃皆不利于钛带酸洗。之后,工业化试验表明,按照最佳的酸洗工艺条件对工业纯钛带进行酸洗,酸洗效果较好,表面氧化皮可被彻底洗尽。Pickling is one of the important processes before titanium strip coil cold rolling. Pickling conditions for hot rolled annealed titanium strip coil were first studied in laboratory, including the concentration of acid, pickling time, pickling temperature and so on. The results show that the rate of weight loss will decrease while the pickling time will increase with the decreasing of the ratio of HF： HNO3. The best condition for pickling is that the concentration of HF acid is 3% and HNO3 acid is 27% , the pickling temperature is 40 ℃ and the pickling time is 240 s. And under this treat condition, the rate of weight loss will only be 1.12%. Besides, the pickling temperature of 25 ℃ and 55 ℃ are both not benefit for the pickling of titanium strip coil. The industrialized experiment results show that the pickling effect is obvious based on the best treat condition, and the surface oxide layer can be removed thoroughly.

关 键 词：酸洗 钛带 氧化层 

分 类 号：TG156.6[金属学及工艺—热处理]