CN110344059A - 金属点蚀成孔处理方法 - Google Patents
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Abstract
本发明涉及金属点蚀成孔处理方法，包含以下处理步骤：A、用清洗液对金属表面进行清洗处理；B、在含有盐酸及三氯化铁的溶液中预处理，去除金属表面的氧化物及钝化膜；C、在含有三价铁酸液中点蚀成孔处理；D、在硝酸溶液中浸泡，除去孔内污渍及氢氧化铁沉淀。本发明的有益效果是：使金属与塑胶不仅有物理铆合力，还有化学键合力，增强塑胶与金属结合力，提升塑胶与金属气密性能。
Description
技术领域
本发明涉及金属表面处理技术领域，特别涉及金属点蚀成孔处理方法。
背景技术
现有金属塑胶结合技术大多是在金属表面形成纳米孔，或者形成凹凸结构来增强金属与塑胶的结合力，但是对非流动性塑胶，比如PAEK，IXEF，现有技术中纳米孔，孔径一般几十到几百纳米，非流动性塑料注塑时塑胶很难进入纳米孔，不能形成紧密结合力，现有技术中金属凹凸结构，一般凹凸尺寸不超过1um,与非流动性塑料也很难形成抓胶效果。本发明形成的金属点蚀孔与非流动性塑胶也能形成紧密的结合力。
发明内容
本发明在金属表面(包含铝合金，不锈钢，钛合金，镁合金)，形成孔径10-500um，孔深10-500um点蚀孔，且在孔表面形成含氮有机转化膜，金属与塑胶结合时，塑胶进入点蚀孔，且与有机转化膜发生化学反应，这样，金属与塑胶不仅有物理铆合力，还有化学键合力，增强塑胶与金属结合力，提升塑胶与金属气密性能。是通过如下技术方案实现的。
金属点蚀成孔处理方法，包含以下处理步骤：
A、用清洗液对金属表面进行清洗处理；
B,在含有盐酸及三氯化铁的溶液中预处理，去除金属表面的氧化物及钝化膜；
C.在含有三价铁酸液中点蚀成孔处理；
D、在硝酸溶液中浸泡,除去孔内污渍及氢氧化铁沉淀；
进一步的，所述步骤A中的清洗过程具体是：将金属在质量浓度为80～120g/L的氢氧化钠、葡萄糖酸钠及壬基酚聚氧乙烯醚混合溶液的脱脂剂溶液中浸泡5-8分钟,温度50-60℃。
进一步的，所述预处理溶液中,HCl浓度40-60g/L,FeCl3浓度80-120g/L，温度40-60℃，浸泡20秒。
进一步的，将金属放入所述处理溶液中,三价铁浓度为100g-300g/L,卤素离子浓度100-400g/L，含氮有机唑类浓度10-100g/L，时间120-300秒,温度85-120℃。
进一步的，所述步骤C,含氮有机唑类优选苯并三氮唑、咪唑、甲基咪唑，氯素离子优选氯离子、溴离子。
进一步的，含氮有机唑类在溶液中不仅能对金属起缓蚀作用，还能与金属形成有机转化膜。
具体实施方式
下面将结合本发明实施例，对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
金属点蚀成孔处理方法，包含以下处理步骤：
A、用清洗液对金属表面进行清洗处理，清洗掉金属表面的上的氧化皮和锈蚀物的方法，金属表面；
B、在含有盐酸及三氯化铁的溶液中预处理，去除金属表面的氧化物及钝化膜；
C、在含有三价铁酸液中点蚀成孔处理；
D、在硝酸溶液中浸泡，除去孔内污渍及氢氧化铁沉淀。
实施例一：
步骤A中的清洗过程具体是：将金属在质量浓度为80g/L的氢氧化钠、葡萄糖酸钠及壬基酚聚氧乙烯醚混合溶液的脱脂剂溶液中浸泡8分钟，溶液温度60℃。
在含有盐酸及三氯化铁的溶液中预处理，预处理溶液中：HCl浓度40g/L，FeCl3浓度80g/L，温度60℃，浸泡20秒。
在含有三价铁酸液中点蚀成孔处理：将金属放入所述处理溶液中，三价铁浓度为100g/L，卤素离子浓度100g/L，含氮有机唑类浓度10g/L，时间300秒，温度120℃。
最后在硝酸溶液中浸泡，除去孔内污渍及氢氧化铁沉。
实施例二：
步骤A中的清洗过程具体是：将金属在质量浓度为120g/L的氢氧化钠、葡萄糖酸钠及壬基酚聚氧乙烯醚混合溶液的脱脂剂溶液中浸泡5-8分钟，溶液温度50℃。
在含有盐酸及三氯化铁的溶液中预处理：预处理溶液中，HCl浓度60g/L，FeCl3浓度120g/L，溶液温度40℃，浸泡20秒。
在含有三价铁酸液中点蚀成孔处理，将金属放入处理溶液中，溶液中的三价铁浓度为300g/L，卤素离子浓度400g/L，含氮有机唑类浓度100g/L，时间120秒,温度85℃。
最后在硝酸溶液中浸泡，除去孔内污渍及氢氧化铁沉。
其中：含氮有机唑类优选苯并三氮唑、咪唑、甲基咪唑，氯素离子优选氯离子、溴离子。含氮有机唑类在溶液中不仅能对金属起缓蚀作用，还能与金属形成有机转化膜。
本发明是在金属表面(包含铝合金、不锈钢、钛合金、镁合金)形成均匀分布的孔口较小，孔内腔较大的点蚀孔，孔径10-500um，孔深10-500um，且在孔表面形成含氮有机转化膜，注塑时，塑胶进入孔内，塑胶与有机转化膜反应，塑胶与金属不仅有物理铆合力，还有化学键合力，提升结合力与气密性。该发明对流动性差的塑胶、陶瓷、铁氟龙等涂层与金属结合时形成紧密结合力。
对于改进的含有三价铁、卤素离子、含氮唑类混合溶液形成的金属点蚀孔均在本发明保护之列，除金属与塑胶结合外，金属点蚀孔与陶瓷，铁氟龙涂层结合均在本发明保护之列。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。
Claims (6)
1.金属点蚀成孔处理方法，包含以下处理步骤：
A、用清洗液对金属表面进行清洗处理；
B、在含有盐酸及三氯化铁的溶液中预处理，去除金属表面的氧化物及钝化膜；
C、在含有三价铁酸液中点蚀成孔处理；
D、在硝酸溶液中浸泡，除去孔内污渍及氢氧化铁沉淀。
2.根据权利要求1所述的金属点蚀成孔处理方法，其特征在于，所述步骤A中的清洗过程具体是：将金属在质量浓度为80～120g/L的氢氧化钠、葡萄糖酸钠及壬基酚聚氧乙烯醚混合溶液的脱脂剂溶液中浸泡5-8分钟，温度50-60℃。
3.根据权利要求1所述的金属点蚀成孔处理方法，其特征在于，所述步骤B中的预处理方法是：在含有HCl浓度40-60g/L、FeCl3浓度80-120g/L，温度40-60℃的预处理溶液中浸泡20秒。
4.根据权利要求1所述的金属点蚀成孔处理方法，其特征在于，所述步骤C中的点蚀成孔处理方法是：将金属放入处理溶液中，处理溶液中的三价铁浓度为100g-300g/L，卤素离子浓度100-400g/L，含氮有机唑类浓度10-100g/L，处理溶液的浸泡时间是120-300秒，溶液温度85-120℃。
5.根据权利要求4所述的金属点蚀成孔处理方法，其特征在于，所述含氮有机唑类包括：苯并三氮唑、咪唑、甲基咪唑，氯素离子优选氯离子、溴离子。
6.根据权利要求4所述的金属点蚀成孔处理方法，其特征在于，含氮有机唑类在溶液中用于对金属起缓蚀作用，还能与金属形成有机转化膜。
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| CN104583458A (zh) * | 2013-07-18 | 2015-04-29 | 三井化学株式会社 | 金属/树脂复合结构体及金属构件 |
| WO2018055970A1 (ja) * | 2016-09-26 | 2018-03-29 | 富士フイルム株式会社 | 孔あき金属箔の製造方法 |
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| CN104583458A (zh) * | 2013-07-18 | 2015-04-29 | 三井化学株式会社 | 金属/树脂复合结构体及金属构件 |
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