CN108048799A - 一种耐腐蚀不锈钢滤网的加工方法 - Google Patents
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Abstract
本发明属于不锈钢滤网加工技术领域,具体涉及一种耐腐蚀不锈钢滤网的加工方法,包括不锈钢滤网清洗、蒸镀多晶硅薄膜和蒸镀二硅化钼陶瓷粉。本发明相比现有技术具有以下优点:本发明中利用茶麸水对不锈钢滤网进行清洗,能够提高清洗效率,除油、除锈效果显著,相比现有的清洗剂能够减少对工件的腐蚀;依次在其表面蒸镀多晶硅薄膜和二硅化钼膜层,能够减少二硅化钼膜层的蒸镀时间,加工后的不锈钢滤网硬度达到240HV以上,在潮湿环境下使用不容易被腐蚀,不易被划伤。
Description
技术领域
本发明属于不锈钢滤网加工技术领域,具体涉及一种耐腐蚀不锈钢滤网的加工方法。
背景技术
不锈钢是一种典型的耐蚀合金,一般指含铬量在12-30%的铁基合金,不锈钢综合性能优良,不仅耐蚀抗磨,外观精美,而且机械性及加工性优良,广泛应用于国防、航空、化工、石化、冶金、海洋、机械、交通、建筑、轻工、食品、医疗及日常生活等各个领域,在国民经济中占有重要地位,随着经济的发展和人民生活水平的不断提高,其用量逐年大幅增加,但在使用苛刻的条件下,仍会有大量的不锈钢设备受腐蚀破坏,其中过滤网在水池过滤中应用广泛,能够有效阻隔污染物,污染物可能包括铁锈、大颗粒物等,由于使用环境问题,容易被划伤或腐蚀,影响过滤网的正常使用,因此,应当对长时间在潮湿环境下使用的过滤网进一步改进。
发明内容
本发明的目的是针对现有的问题,提供了一种耐腐蚀不锈钢滤网的加工方法。
本发明是通过以下技术方案实现的: 一种耐腐蚀不锈钢滤网的加工方法,包括以下内容:
(1)用不锈钢网丝与不锈钢板材按常规方法制备成不锈钢滤网,然后在茶麸水中用超声波清洗,用去离子水冲洗后将其表面烘干;
(2)预热到100-120℃后移入蒸镀设备中,抽真空为0.002-0.008Pa,在温度为140-160℃的条件下在不锈钢滤网表面沉淀多晶硅薄膜;
(3)调节蒸镀设备真空度为0.08-0.2Pa,在温度为85-90℃的条件下在不锈钢滤网表面沉淀二硅化钼陶瓷粉,所述退火温度为470-520℃。
作为对上述方案的进一步改进,所述超声波清洗时的功率密度为0.4-0.5W/cm²,清洗时间不超过4分钟。
作为对上述方案的进一步改进,所述茶麸水的制备方法为将清洗后的茶麸在压力为0.4-0.6MPa的容器中进行加热,加热到105-110℃后保持2.5-3小时,然后将茶麸取出,在温度为65-75℃、相当于其重量5-6倍的热水中浸泡6-8小时,过滤,即得。
用以上方法制备后的茶麸在热水中浸泡不易散裂,有助于有效物质的析出。
作为对上述方案的进一步改进,所述多晶硅薄膜中晶粒尺寸不大于0.4μm,晶化率达到95%。
作为对上述方案的进一步改进,所述步骤(3)中的蒸镀时间为3-4小时,蒸镀层厚度为350-450nm,蒸镀时间会影响蒸镀层的厚度及其表面结构,进而影响不锈钢表面的性质。
作为对上述方案的进一步改进,所述步骤(2)和步骤(3)均在氩气保护的条件下进行。
所述二硅化钼陶瓷粉具有较强的耐蚀抗氧化性能,直接蒸镀于不锈钢表面需要较长时间的蒸镀过程,才能达到相应效果,本申请中在蒸镀二硅化钼陶瓷粉前在不锈钢表面包覆一层致密的多晶硅薄膜,能够大大减少二硅化钼陶瓷粉蒸镀的时间,使不锈钢具有较强的耐腐蚀性。
本发明相比现有技术具有以下优点:本发明中利用茶麸水对不锈钢滤网进行清洗,能够提高清洗效率,除油、除锈效果显著,相比现有的清洗剂能够减少对工件的腐蚀;依次在其表面蒸镀多晶硅薄膜和二硅化钼膜层,能够减少二硅化钼膜层的蒸镀时间,加工后的不锈钢滤网硬度达到240HV以上,在潮湿环境下使用不容易被腐蚀,不易被划伤。
具体实施方式
实施例1
一种耐腐蚀不锈钢滤网的加工方法,包括以下内容:
(1)用不锈钢网丝与不锈钢板材按常规方法制备成不锈钢滤网,然后在茶麸水中用超声波清洗,用去离子水冲洗后将其表面烘干;
所述超声波清洗时的功率密度为0.4W/cm²,清洗时间不超过4分钟;
(2)预热到120℃后移入蒸镀设备中,在氩气保护的条件下,抽真空为0.005Pa,在温度为150℃的条件下在不锈钢滤网表面沉淀多晶硅薄膜;
(3)在氩气保护的条件下,调节蒸镀设备真空度为0.14Pa,在温度为88℃的条件下在不锈钢滤网表面沉淀二硅化钼陶瓷粉,蒸镀时间为3.5小时,所述退火温度为500℃。
其中,所述茶麸水的制备方法为将清洗后的茶麸在压力为0.5MPa的容器中进行加热,加热到108℃后保持2.8小时,然后将茶麸取出,在温度为70℃、相当于其重量5.5倍的热水中浸泡7小时,过滤,即得。
实施例2
一种耐腐蚀不锈钢滤网的加工方法,包括以下内容:
(1)用不锈钢网丝与不锈钢板材按常规方法制备成不锈钢滤网,然后在茶麸水中用超声波清洗,用去离子水冲洗后将其表面烘干;
所述超声波清洗时的功率密度为0.4W/cm²,清洗时间不超过4分钟;
(2)预热到120℃后移入蒸镀设备中,在氩气保护的条件下,抽真空为0.002Pa,在温度为160℃的条件下在不锈钢滤网表面沉淀多晶硅薄膜;
(3)在氩气保护的条件下,调节蒸镀设备真空度为0.08Pa,在温度为90℃的条件下在不锈钢滤网表面沉淀二硅化钼陶瓷粉,蒸镀时间为4小时,所述退火温度为470℃。
其中,所述茶麸水的制备方法为将清洗后的茶麸在压力为0.6MPa的容器中进行加热,加热到110℃后保持2.5小时,然后将茶麸取出,在温度为70℃、相当于其重量5倍的热水中浸泡8小时,过滤,即得。
实施例3
一种耐腐蚀不锈钢滤网的加工方法,包括以下内容:
(1)用不锈钢网丝与不锈钢板材按常规方法制备成不锈钢滤网,然后在茶麸水中用超声波清洗,用去离子水冲洗后将其表面烘干;
所述超声波清洗时的功率密度为0.5W/cm²,清洗时间不超过4分钟;
(2)预热到100℃后移入蒸镀设备中,在氩气保护的条件下,抽真空为0.008Pa,在温度为140℃的条件下在不锈钢滤网表面沉淀多晶硅薄膜;
(3)在氩气保护的条件下,调节蒸镀设备真空度为0.2Pa,在温度为85℃的条件下在不锈钢滤网表面沉淀二硅化钼陶瓷粉,蒸镀时间为3小时,所述退火温度为520℃。
其中,所述茶麸水的制备方法为将清洗后的茶麸在压力为0.4MPa的容器中进行加热,加热到105℃后保持3小时,然后将茶麸取出,在温度为75℃、相当于其重量6倍的热水中浸泡6小时,过滤,即得。
设置对照组1,将实施例1中茶麸水替换为清水,其余内容不变;设置对照组2,将实施例1中茶麸水替换为有机碱性溶剂,其余内容不变;设置对照组3,将实施例1中步骤(2)去掉,其余内容不变;设置对照组4,将实施例1中步骤(3)去掉,其余内容不变;设置空白组,即为未处理的不锈钢滤网;所述不锈钢原料为316L不锈钢,设置实验,对各组加工后的不锈钢滤网进行检测,得到以下结果:
表1
通过以上数据可以看出,本发明中方法能够有效提高不锈钢的耐腐蚀性能和硬度,在潮湿环境下的使用寿命大大延长。
Claims (6)
1.一种耐腐蚀不锈钢滤网的加工方法,其特征在于,包括以下内容:
(1)用不锈钢网丝与不锈钢板材按常规方法制备成不锈钢滤网,然后在茶麸水中用超声波清洗,用去离子水冲洗后将其表面烘干;
(2)预热到100-120℃后移入蒸镀设备中,抽真空为0.002-0.008Pa,在温度为140-160℃的条件下在不锈钢滤网表面沉淀多晶硅薄膜;
(3)调节蒸镀设备真空度为0.08-0.2Pa,在温度为85-90℃的条件下在不锈钢滤网表面沉淀二硅化钼陶瓷粉,所述退火温度为470-520℃。
2.如权利要求1所述一种耐腐蚀不锈钢滤网的加工方法,其特征在于,所述超声波清洗时的功率密度为0.4-0.5W/cm²,清洗时间不超过4分钟。
3.如权利要求1所述一种耐腐蚀不锈钢滤网的加工方法,其特征在于,所述茶麸水的制备方法为将清洗后的茶麸在压力为0.4-0.6MPa的容器中进行加热,加热到105-110℃后保持2.5-3小时,然后将茶麸取出,在温度为65-75℃、相当于其重量5-6倍的热水中浸泡6-8小时,过滤,即得。
4.如权利要求1所述一种耐腐蚀不锈钢滤网的加工方法,其特征在于,所述多晶硅薄膜中晶粒尺寸不大于0.4μm,晶化率达到95%。
5.如权利要求1所述一种耐腐蚀不锈钢滤网的加工方法,其特征在于,所述步骤(3)中的蒸镀时间为3-4小时,蒸镀层厚度为350-450nm。
6.如权利要求1所述一种耐腐蚀不锈钢滤网的加工方法,其特征在于,所述步骤(2)和步骤(3)均在氩气保护的条件下进行。
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