CN107419279A - 一种不锈钢酸洗钝化膏及其制备方法 - Google Patents
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Abstract
本发明公开了一种锈钢酸洗钝化膏,包括缓蚀剂和钝化剂,所述缓蚀剂的配方如下:二氧化硅0.5~1份、碳酸钙1~2份、谷氨酸1~2份、天冬氨酸1~3份、酪氨酸1~5份、磷酸氢二锌1~2份、磷酸1~2份、乌洛托品1~3份、苯胺1~1.5份、乙醇1~2份、水2~3份;所述钝化剂的配方如下:氟硅酸镁0.5~1份、2‑羟基膦酰基乙酸1~3份、铬酸钾0.1~0.3份、硝酸锌1~3份、硫酸钡0.1~0.5份、EDTA 0.1~0.2份、水3~6份。该不锈钢酸洗钝化膏使用时将两者混合,该钝化液具有无毒、环保,钝化效果好等优势。
Description
技术领域
本发明属于不锈钢制造技术领域,具体涉及一种不锈钢酸洗钝化膏及其制备方法。
背景技术
不锈钢有良好的耐腐蚀、耐高温、耐低温、耐磨损外观精美等特性,用途非常广泛,是过敏经济各部门发展的重要钢铁材料。不锈钢材料在宇航、原子能、海洋开发、石油化工、汽车、建筑装潢、家用电器、厨房器皿等行业得到了广泛的应用。
不锈钢在加工过程中会造成表面缺陷,腐蚀隐患,出现黑色氧化皮和其它金属化合物、黄色焊缝及冷拔时的油脂等,为了提高不锈钢的外观和耐蚀性,加工后的不锈钢必须进行酸洗钝化处理。使处理后的表面形成一层以铬为主要物质的钝化膜,阻止与其它物质反应,达到钝化目的,使之光亮洁白从而提高不锈钢制品的表面防腐质量,延长设备使用寿命。不锈钢酸洗一般是采用酸洗钝化膏和酸洗钝化液进行处理。
现有技术中的酸洗钝化液具有强烈的刺激性气味,不利于工人的身体健康,对环境有破坏作用,因此亟需提供一种环保、无毒的不锈钢酸洗钝化液。
发明内容
技术问题:提供一种环保、无毒的不锈钢酸洗钝化液及其制备方法。
技术方案:一种不锈钢酸洗钝化膏,包括缓蚀剂和钝化剂,所述缓蚀剂的配方如下:二氧化硅0.5~1份、碳酸钙1~2份、谷氨酸1~2份、天冬氨酸1~3份、酪氨酸1~5份、磷酸氢二锌1~2份、磷酸1~2份、乌洛托品1~3份、苯胺1~1.5份、乙醇1~2份、水2~3份;
所述钝化剂的配方如下:氟硅酸镁0.5~1份、2-羟基膦酰基乙酸1~3份、铬酸钾0.1~0.3份、硝酸锌1~3份、硫酸钡0.1~0.5份、EDTA 0.1~0.2份、水3~6份。
作为优选,所述缓蚀剂的配方如下:二氧化硅1份、碳酸钙2份、谷氨酸1份、天冬氨酸1份、酪氨酸1份、磷酸氢二锌1份、磷酸1份、乌洛托品1份、苯胺1份、乙醇1份、水2份;
所述钝化剂的配方如下:氟硅酸镁1份、2-羟基膦酰基乙酸1份、铬酸钾0.1份、硝酸锌1份、硫酸钡0.1份、EDTA 0.1份、水3份。
作为优选,所述缓蚀剂的配方如下:二氧化硅0.5份、碳酸钙1份、谷氨酸2份、天冬氨酸3份、酪氨酸5份、磷酸氢二锌2份、磷酸2份、乌洛托品3份、苯胺1.5份、乙醇2份、水3份;
所述钝化剂的配方如下:氟硅酸镁0.5份、2-羟基膦酰基乙酸3份、铬酸钾0.3份、硝酸锌3份、硫酸钡0.5份、EDTA 0.2份、水6份。
上述不锈钢酸洗钝化膏的制备方法,缓蚀剂的制备方法如下:
按质量比将二氧化硅、碳酸钙、谷氨酸、天冬氨酸、酪氨酸、磷酸氢二锌、磷酸二氢钾按比例加入水和乙醇的混合物中,升温至20~30℃,再依次加入乌洛托品、苯胺,搅拌混合均匀;
所述钝化剂的制备方法如下:按质量比将氟硅酸镁、2-羟基膦酰基乙酸、碳酸钙、铬酸钾、硝酸锌、硫酸钡、EDTA加入水中,搅拌混合均匀。
步骤(1)中,搅拌速度为20~50rpm。
步骤(2)中,搅拌速度为50~100rpm。
有益效果:
本发明提供了一种不锈钢酸洗钝化膏,该钝化液分为缓蚀剂和钝化剂,使用时将两者混合,该钝化液具有无毒、环保,钝化效果好等优势。
具体实施方式
根据下述实施例,可以更好地理解本发明。然而,本领域的技术人员容易理解,实施例所描述的内容仅用于说明本发明,而不应当也不会限制权利要求书中所详细描述的本发明。
实施例1:
所述缓蚀剂的配方如下:二氧化硅1份、碳酸钙2份、谷氨酸1份、天冬氨酸1份、酪氨酸1份、磷酸氢二锌1份、磷酸1份、乌洛托品1份、苯胺1份、乙醇1份、水2份;
所述钝化剂的配方如下:氟硅酸镁1份、2-羟基膦酰基乙酸1份、铬酸钾0.1份、硝酸锌1份、硫酸钡0.1份、EDTA 0.1份、水3份。
将缓蚀剂和钝化剂按照1:1的比例混合,既得到本发明所述的不锈钢酸洗钝化膏。
实施例2:
所述缓蚀剂的配方如下:二氧化硅0.5份、碳酸钙1份、谷氨酸2份、天冬氨酸3份、酪氨酸5份、磷酸氢二锌2份、磷酸2份、乌洛托品3份、苯胺1.5份、乙醇2份、水3份;
所述钝化剂的配方如下:氟硅酸镁0.5份、2-羟基膦酰基乙酸3份、铬酸钾0.3份、硝酸锌3份、硫酸钡0.5份、EDTA 0.2份、水6份。
将缓蚀剂和钝化剂按照1:1的比例混合,既得到本发明所述的不锈钢酸洗钝化膏。
实施例3:
调节缓蚀剂和钝化剂的配比,见表1,利用国标实验方法检测缓蚀剂和钝化剂的比例对钝化膜性能的影响,检测结果见表2。
表1 缓蚀剂和钝化的配比
编号 | 缓蚀剂 | 钝化剂 |
1 | 0 | 1 |
2 | 1 | 1 |
3 | 1 | 2 |
4 | 1 | 3 |
表2 常温处理条件下钝化膜性能对比
从表2中可以看出,调整缓蚀剂和钝化剂的比例,在没有缓蚀剂的情况下,钝化膜明显暗沉、没有光泽,说明缓蚀剂对钝化膜的形成也具有不可磨灭的作用。
实施例4:谷氨酸、天冬氨酸、酪氨酸对钝化膜性能的影响。
调节谷氨酸、天冬氨酸、酪氨酸在缓蚀剂中的比例,其余组分的比例如下:二氧化硅0.5份、碳酸钙1份、磷酸氢二锌1份、磷酸1份、乌洛托品1份、苯胺1份、乙醇1份、水2份。
调节比例如表3所示,检测结果见表4。
表3 谷氨酸、天冬氨酸、酪氨酸质量比例
编号 | 谷氨酸 | 天冬氨酸 | 酪氨酸 |
5 | 0 | 0 | 0 |
6 | 1 | 0 | 0 |
7 | 0 | 1 | 0 |
8 | 0 | 0 | 1 |
9 | 1 | 1 | 1 |
表4谷氨酸、天冬氨酸、酪氨酸对钝化膜性能的影响
实施例5:2-羟基膦酰基乙酸对钝化膜性能的影响
调节2-羟基膦酰基乙酸在钝化剂中的浓度,其余组分的含量按如下:氟硅酸镁1份、铬酸钾0.1份、硝酸锌1份、硫酸钡0.1份、EDTA 0.1份、水3份。
表5 2-羟基膦酰基乙酸的含量
编号 | 2-羟基膦酰基乙酸 |
9 | 0 |
10 | 1 |
11 | 2 |
12 | 3 |
表6 2-羟基膦酰基乙酸对钝化膜性能的影响
Claims (6)
1.一种不锈钢酸洗钝化膏,其特征在于,包括缓蚀剂和钝化剂,所述缓蚀剂的配方如下:二氧化硅0.5~1份、碳酸钙1~2份、谷氨酸1~2份、天冬氨酸1~3份、酪氨酸1~5份、磷酸氢二锌1~2份、磷酸1~2份、乌洛托品1~3份、苯胺1~1.5份、乙醇1~2份、水2~3份;
所述钝化剂的配方如下:氟硅酸镁0.5~1份、2-羟基膦酰基乙酸1~3份、铬酸钾0.1~0.3份、硝酸锌1~3份、硫酸钡0.1~0.5份、EDTA 0.1~0.2份、水3~6份。
2.根据权利要求1所述的不锈钢酸洗钝化膏,其特征在于,所述缓蚀剂的配方如下:二氧化硅1份、碳酸钙2份、谷氨酸1份、天冬氨酸1份、酪氨酸1份、磷酸氢二锌1份、磷酸1份、乌洛托品1份、苯胺1份、乙醇1份、水2份;
所述钝化剂的配方如下:氟硅酸镁1份、2-羟基膦酰基乙酸1份、铬酸钾0.1份、硝酸锌1份、硫酸钡0.1份、EDTA 0.1份、水3份。
3.根据权利要求1所述的不锈钢酸洗钝化膏,其特征在于,所述缓蚀剂的配方如下:二氧化硅0.5份、碳酸钙1份、谷氨酸2份、天冬氨酸3份、酪氨酸5份、磷酸氢二锌2份、磷酸2份、乌洛托品3份、苯胺1.5份、乙醇2份、水3份;
所述钝化剂的配方如下:氟硅酸镁0.5份、2-羟基膦酰基乙酸3份、铬酸钾0.3份、硝酸锌3份、硫酸钡0.5份、EDTA 0.2份、水6份。
4.权利要求1所述不锈钢酸洗钝化膏的制备方法,其特征在于,缓蚀剂的制备方法如下:
(1) 按质量比将二氧化硅、碳酸钙、谷氨酸、天冬氨酸、酪氨酸、磷酸氢二锌、磷酸二氢钾按比例加入水和乙醇的混合物中,升温至20~30℃,再依次加入乌洛托品、苯胺,搅拌混合均匀;
(2) 所述钝化剂的制备方法如下:按质量比将氟硅酸镁、2-羟基膦酰基乙酸、碳酸钙、铬酸钾、硝酸锌、硫酸钡、EDTA加入水中,搅拌混合均匀。
5.根据权利要求4所述不锈钢酸洗钝化膏的制备方法,其特征在于,步骤(1)中,搅拌速度为20~50rpm。
6.根据权利要求4所述不锈钢酸洗钝化膏的制备方法,其特征在于,步骤(2)中,搅拌速度为50~100rpm。
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