CN106435559A - 一种化学泵不锈钢外壳的防腐处理工艺 - Google Patents

一种化学泵不锈钢外壳的防腐处理工艺 Download PDF

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CN106435559A
CN106435559A CN201610871656.XA CN201610871656A CN106435559A CN 106435559 A CN106435559 A CN 106435559A CN 201610871656 A CN201610871656 A CN 201610871656A CN 106435559 A CN106435559 A CN 106435559A
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吴俊�
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SUZHOU CAMES CHEMICAL MATERIALS CO., LTD.
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Abstract

发明公开了一种化学泵不锈钢外壳的防腐处理工艺，包括以下步骤：（1）采用碳酸氢钠溶液对不锈钢外壳进行清洗（2）酸洗（3）采用处理液A处理（4）采用碳酸钠溶液清洗，再采用清水清洗（5）采用防腐剂处理。本发明提供的不锈钢外壳表面处理工艺简单，通过在防腐剂处理前进行的处理，能够提升1倍防腐效果，结合使用本发明配制的防腐剂可以明显提高防腐剂抵抗外界环境侵蚀的能力，使整个膜层更加均匀致密，能有效抑制膜层表面的微电化学反应，从而耐腐蚀性能得到很大提高，防腐层致密度高，防腐性能更好。

Description

一种化学泵不锈钢外壳的防腐处理工艺
技术领域
本发明涉及化学泵泵壳表面处理领域，特别是涉及一种化学泵不锈钢外壳的防腐处理工艺。
背景技术
化工泵是全国联合设计的节能泵，泵的性能，技术要求，根据国际标准ISO2858所规定的性能和尺寸设计的，其优点：全系列水利性能布局合理，用户选择范围宽，“后开式”结构，检修方便、效率和吸程达到国际先进水平。化工泵分类：不锈钢化工泵，塑料化工泵，氟塑料化工泵，电动化工泵，气动化工泵。在很多领域中，化工泵采用20号不锈钢制备，在加工时，需要对不锈钢表面进行表面处理，提升防腐蚀性能。
发明内容
本发明通过以下技术方案实现：
一种化学泵不锈钢外壳的防腐处理工艺，包括以下步骤：
（1）、将不锈钢外壳使用温度为16℃的质量分数1.8%的碳酸氢钠水溶液中浸泡，并使用22kHz的超声波处理12min后，添加碳酸氢钠质量55%的异丙醇，然后将温度升高至78℃，并使用25kHz的超声波处理18min后，使用清水清洗；通过采用一定浓度的碳酸氢钠溶液配合超声波对不锈钢外壳进行处理，不仅清洗更加干净，还能提高不锈钢外壳表面性能，从而提高防腐效果；
（2）、将步骤（1）处理好的不锈钢外壳使用质量分数0.1%的醋酸溶液对其表面进行一次酸洗，一次酸洗时间10min，静置12min后，使用质量分数0.2%的柠檬酸溶液对其表面进行二次酸洗，同时使用15kHz的超声处理10min，然后使用清水清洗；
(3)、将酸洗后的不锈钢外壳，使用处理液A在30℃下浸泡处理18min并以200r/min转速转动，所述处理液A按重量份计由氨水1.6、尿素2.5、十二碳醇酯1.6、烷基磺酸钠2.3、莲子草叶提取物0.1、水30；采用处理液A的处理，能够进一步提高防腐效果，使得防腐膜耐蚀性能得到极大的提升，能够提高防腐层硬度0.6倍；
（4）、将步骤（3）处理完成的不锈钢外壳采用温度为30℃、质量分数0.5%的碳酸钠溶液冲洗5min，然后再采用温度为8℃的清水冲洗2min，再在60℃下进行干燥；
（5）、将步骤（4）处理好的不锈钢外壳采用防腐剂进行均匀涂刷处理，涂刷好后，采用30kHz的超声波处理10s，然后置于110℃的烘箱中烘烤15分钟，取出，自然冷却至室温，即可，防腐剂按重量份计由以下成分制成：硅烷偶联剂10、苯甲酸3、焦磷酸钠3、聚酰亚胺1、焦磷酸钠1、丙三醇80、二烷基二硫代磷酸锌0.5、二氧化钛0.3；采用本发明配制的防腐剂并配合超声波处理可使得不锈钢外壳表面形成的防腐膜稳定性得到极大的提高，膜耐盐雾时间长，处理后的耐盐雾时间相较于普通防腐剂处理提高了2倍以上，同时防腐膜附着力非常高，不易脱落。
进一步的，所述步骤（3）中莲子草叶提取物制备方法为：由莲子草叶采用60%体积百分比浓度乙醇溶剂，料液比1: 20，60℃回流提取1h，离心得上清液，然后旋转蒸发浓缩，然后冷冻干燥制得。
进一步的，所述步骤（4）中干燥为真空干燥。
本发明的有益效果是：本发明提供的不锈钢外壳表面处理工艺简单，通过在防腐剂处理前进行的处理，能够提升1倍防腐效果，结合使用本发明配制的防腐剂可以明显提高防腐剂抵抗外界环境侵蚀的能力，使整个膜层更加均匀致密，能有效抑制膜层表面的微电化学反应，从而耐腐蚀性能得到很大提高，防腐层致密度高，防腐性能更好，防腐剂制备结合不锈钢材质的特点进行调配，可以进一步提高不锈钢的防腐蚀能力，防腐层的硬度提高了1倍，同时工艺简单，能耗低，防腐剂利用率高，无污染，经过本发明处理的化学泵不锈钢外壳的使用寿命相较于普通防腐处理提高了2倍，极大的节约了生产成本，具有极高的经济效益。
具体实施方式
一种化学泵不锈钢外壳的防腐处理工艺，包括以下步骤：
（1）、将不锈钢外壳使用温度为16℃的质量分数1.8%的碳酸氢钠水溶液中浸泡，并使用22kHz的超声波处理12min后，添加碳酸氢钠质量55%的异丙醇，然后将温度升高至78℃，并使用25kHz的超声波处理18min后，使用清水清洗；通过采用一定浓度的碳酸氢钠溶液配合超声波对不锈钢外壳进行处理，不仅清洗更加干净，还能提高不锈钢外壳表面性能，从而提高防腐效果；
（2）、将步骤（1）处理好的不锈钢外壳使用质量分数0.1%的醋酸溶液对其表面进行一次酸洗，一次酸洗时间10min，静置12min后，使用质量分数0.2%的柠檬酸溶液对其表面进行二次酸洗，同时使用15kHz的超声处理10min，然后使用清水清洗；
(3)、将酸洗后的不锈钢外壳，使用处理液A在30℃下浸泡处理18min并以200r/min转速转动，所述处理液A按重量份计由氨水1.6、尿素2.5、十二碳醇酯1.6、烷基磺酸钠2.3、莲子草叶提取物0.1、水30；采用处理液A的处理，能够进一步提高防腐效果，使得防腐膜耐蚀性能得到极大的提升，能够提高防腐层硬度0.6倍；
（4）、将步骤（3）处理完成的不锈钢外壳采用温度为30℃、质量分数0.5%的碳酸钠溶液冲洗5min，然后再采用温度为8℃的清水冲洗2min，再在60℃下进行干燥；
（5）、将步骤（4）处理好的不锈钢外壳采用防腐剂进行均匀涂刷处理，涂刷好后，采用30kHz的超声波处理10s，然后置于110℃的烘箱中烘烤15分钟，取出，自然冷却至室温，即可，防腐剂按重量份计由以下成分制成：硅烷偶联剂10、苯甲酸3、焦磷酸钠3、聚酰亚胺1、焦磷酸钠1、丙三醇80、二烷基二硫代磷酸锌0.5、二氧化钛0.3；采用本发明配制的防腐剂并配合超声波处理可使得不锈钢外壳表面形成的防腐膜稳定性得到极大的提高，膜耐盐雾时间长，处理后的耐盐雾时间相较于普通防腐剂处理提高了2倍以上，同时防腐膜附着力非常高，不易脱落。
步骤（3）中莲子草叶提取物制备方法为：由莲子草叶采用60%体积百分比浓度乙醇溶剂，料液比1: 20，60℃回流提取1h，离心得上清液，然后旋转蒸发浓缩，然后冷冻干燥制得。
步骤（4）中干燥为真空干燥。
性能测试
对本发明和对比例处理的不锈钢外壳进行性能测试，结果见表1。
将盛有20%硝酸铵溶液水浴加热至70℃，将经过处理的不锈钢外壳浸入硝酸铵溶液中，观察明显出现锈蚀斑点的时间。
表1：
耐硝酸铵溶液时间/min
本发明 488
对比例1 420
对比例2 413
对比例3 404
其中，对比例1为：将本发明步骤（1）更改为：将不锈钢外壳使用温度为16℃的质量分数1.8%的碳酸氢钠水溶液中浸泡，并使用22kHz的超声波处理12min，使用清水清洗，其余处理步骤不变；
对比例2为：将本发明步骤（3）中处理液A中不添加莲子草叶提取物和尿素，其它成分不变，其余处理步骤不变；
对比例3为：将本发明步骤（5）中除去采用30kHz的超声波处理10s的处理步骤，其余不变，其余处理步骤不变；
通过表1可以看出，更改本发明处理步骤，明显降低防腐剂处理后的不锈钢外壳的防腐蚀性能。
经过本发明防腐剂处理后的不锈钢外壳耐盐雾性能高达118小时(5％NaCl溶液连续喷雾，温度35℃），当将本发明步
骤（5）中除去采用30kHz的超声波处理10s的处理步骤，其余不变，其余处理步骤不变时，处理后的不锈钢外壳耐盐雾时间为97小时，耐盐雾性能明显降低。

Claims (3)

1.一种化学泵不锈钢外壳的防腐处理工艺，其特征在于，包括以下步骤：
（1）、将不锈钢外壳使用温度为16℃的质量分数1.8%的碳酸氢钠水溶液中浸泡，并使用22kHz的超声波处理12min后，添加碳酸氢钠质量55%的异丙醇，然后将温度升高至78℃，并使用25kHz的超声波处理18min后，使用清水清洗；
（2）、将步骤（1）处理好的不锈钢外壳使用质量分数0.1%的醋酸溶液对其表面进行一次酸洗，一次酸洗时间10min，静置12min后，使用质量分数0.2%的柠檬酸溶液对其表面进行二次酸洗，同时使用15kHz的超声处理10min，然后使用清水清洗；
(3)、将酸洗后的不锈钢外壳，使用处理液A在30℃下浸泡处理18min并以200r/min转速转动，所述处理液A按重量份计由氨水1.6、尿素2.5、十二碳醇酯1.6、烷基磺酸钠2.3、莲子草叶提取物0.1、水30；
（4）、将步骤（3）处理完成的不锈钢外壳采用温度为30℃、质量分数0.5%的碳酸钠溶液冲洗5min，然后再采用温度为8℃的清水冲洗2min，再在60℃下进行干燥；
（5）、将步骤（4）处理好的不锈钢外壳采用防腐剂进行均匀涂刷处理，涂刷好后，采用30kHz的超声波处理10s，然后置于110℃的烘箱中烘烤15分钟，取出，自然冷却至室温，即可，防腐剂按重量份计由以下成分制成：硅烷偶联剂10、苯甲酸3、焦磷酸钠3、聚酰亚胺1、焦磷酸钠1、丙三醇80、二烷基二硫代磷酸锌0.5、二氧化钛0.5。
2.根据权利要求1所述的一种化学泵不锈钢外壳的防腐处理工艺，其特征在于，所述步骤（3）中莲子草叶提取物制备方法为：由莲子草叶采用60%体积百分比浓度乙醇溶剂，料液比1: 20，60℃回流提取1h，离心得上清液，然后旋转蒸发浓缩，然后冷冻干燥制得。
3.根据权利要求1所述的一种化学泵不锈钢外壳的防腐处理工艺，其特征在于，所述步骤（4）中干燥为真空干燥。
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