CN109338349A - 一种镀锌钝化膜修复的工艺方法 - Google Patents

一种镀锌钝化膜修复的工艺方法 Download PDF

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CN109338349A
CN109338349A CN201811019231.1A CN201811019231A CN109338349A CN 109338349 A CN109338349 A CN 109338349A CN 201811019231 A CN201811019231 A CN 201811019231A CN 109338349 A CN109338349 A CN 109338349A
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film
zinc coating
passive film
passivating
passivating solution
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李忠山
毛玉龙
李宇飞
郑昭卓
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BEIJING SHUGUANG AERO ELECTRICAL Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • C23C22/37—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also hexavalent chromium compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/78—Pretreatment of the material to be coated

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

本发明属于表面处理技术领域，涉及一种镀锌钝化膜修复的工艺方法，以解决镀锌钝化膜局部损伤修复的工艺方法问题。钝化液为比重为1.84的硫酸0.3‑0.6克/升，铬酐4‑6克/升，比重为1.42的硝酸2‑4克/升，氟化盐1‑2克/升。本发明配制的钝化液生成的膜层厚，抗蚀性能高，盐雾试验96小时，新膜光亮如新，旧膜出现花斑氧化，盐雾试验180小时，新膜没有出现氧化现象。本发明修复方法，适合小零件也适合大型零件，操作方法简单成本低，修复时间短,合格率高。可推广用于军工、航天、船舶、民用等各种局部镀锌钝化膜损伤零件的修复处理，效果好不伤基体,不用分解零件。

Description

一种镀锌钝化膜修复的工艺方法
技术领域
本发明属于表面处理技术领域，涉及一种镀锌钝化膜修复的工艺方法，以解决镀锌钝化膜局部损伤修复的工艺方法问题。
背景技术
目前一些钢铁材料的壳体、端盖镀锌钝化后，还要加工、组装，当组装成电机时发现电机外表面镀层划伤破损现象。传统工艺，零件只能靠镀膜保护，如果出现外表面镀层划伤破损现象，只能分解电机，零件退除镀膜之后重新镀锌钝化。有些零件可以返修再用，但大多数零件由于是压装无法分解，还有些零件分解后变形或尺寸精度发生变化等，总之无返修价值。
发明内容
本发明的目的是：解决镀锌钝化膜局部损伤修复的工艺问题。本发明的技术解决方案是，
(1)配制钝化液
依次加入硫酸、铬酐、硝酸、氟化盐，每加入一种化学药品时，同时搅拌均匀，搅拌均匀后再加入下一化学药品，液体的施工温度为30-40℃；
(2)修补前处理
将需要修补处用汽油擦洗干净，用脱脂棉浸水再蘸清洗去污用百洁粉，把划伤处打磨干净，之后再用脱脂棉蘸无水酒精清洗打磨处，直到修补处擦洗干净；
(3)修补钝化膜
将配制好的钝化液涂覆在修复表面，保持5-10秒后用脱脂棉粘无水酒精清洗钝化处，用吹风机吹干即可。
所述钝化液调配时加入硫酸后，待溶液冷却后再按顺序填加其它药品。
所述修补钝化膜过程中，修补前处理后要马上进行钝化处理,放置时间小于3分钟。
本发明具有的优点和有益效果，本发明配制的钝化液生成的膜层厚，抗蚀性能高，盐雾试验96小时，新膜光亮如新，旧膜出现花斑氧化，盐雾试验180小时，新膜没有出现氧化现象。本发明修复方法，适合小零件也适合大型零件，操作方法简单成本低，修复时间短,合格率高。可推广用于军工、航天、船舶、民用等各种局部镀锌钝化膜损伤零件的修复处理，效果好不伤基体,不用分解零件。
具体实施方式
本发明工艺方法要经过以下工序：
除油—打磨—无水酒精清洗—钝化—无水酒精清洗—吹干
首先，把需要修补处用汽油擦洗干净，脱脂棉用水浸湿粘适量清洗去污用百洁粉轻轻把划伤处打磨干净，之后用脱脂棉粘无水酒精清洗打磨处，再把调配好的钝化液均匀涂在打磨处5-10秒，用脱脂棉粘无水酒精清洗钝化处，用吹风机吹干即可。
钝化槽液成份
钝化液和修补注意事项：
(1、)钝化液调配时严格按顺序加入药品，填加药品同时不断搅拌溶液。
(2、)加入硫酸后，待溶液冷却后再按顺序填加其它药品。
(3、)调配钝化液可存放6个月，使用后的钝化液严禁再倒回存放溶器。
(4、)局部修复过程中要配戴干净橡胶手套，避免污染零件。
(5、)局部修复过程中镀膜完好部分要适当保护,避免擦伤镀膜或钝化液损伤镀膜。
(6、)局部修复过程中前处理后要马上进行钝化处理,放置时间过长镀膜会被氧化从而影响修复膜质量。
实施例
例1
用45钢材料生产的壳体外径ф150，镀锌5-8um钝化,组装后局钝化膜有划伤破损现象。
工艺方法要经过以下工序：
除油—打磨—无水酒精清洗—钝化—无水酒精清洗—吹干
1、除油：把需要修补处用汽油擦洗干净。
2、打磨：脱脂棉用水浸湿粘适量清洗去污用百洁粉轻轻把划伤处打磨干净。
3、无水酒精清洗：之后用脱脂棉粘无水酒精清洗打磨处。
4、钝化：把调配好的钝化液均匀涂在打磨处5秒。
钝化槽液成份
5、无水酒精清洗：用脱脂棉粘无水酒精清洗钝化处。
6、吹干：用吹风机吹干即可。
经过上述方法补修的钝化膜光量完整符合工艺要求。
例2
用20钢材料生产的壳体外径ф650，镀锌8-12um钝化,组装后局钝化膜有划伤坡损现象。工艺方法要经过以下工序：
除油—打磨—无水酒精清洗—钝化—无水酒精清洗—吹干
1、除油：把需要修补处用汽油擦洗干净。
2、打磨：脱脂棉用水浸湿粘适量清洗去污用百洁粉轻轻把划伤处打磨干净。
3、无水酒精清洗：之后用脱脂棉粘无水酒精清洗打磨处。
4、钝化：把调配好的钝化液均匀涂在打磨处5秒。
钝化槽液成份
5、无水酒精清洗：用脱脂棉粘无水酒精清洗钝化处。
6、吹干：用吹风机吹干即可。
经过上述方法补修的钝化膜光量完整符合工艺要求。
例3
用45钢材料生产的壳体外径ф150，镀锌5-8um钝化,组装后局钝化膜有损伤发黑现象。工艺方法要经过以下工序：
除油—打磨—无水酒精清洗—钝化—无水酒精清洗—吹干
1、除油：把需要修补处用汽油擦洗干净。
2、打磨：脱脂棉用水浸湿粘适量清洗去污用百洁粉轻轻把划伤处打磨干净。
3、无水酒精清洗：之后用脱脂棉粘无水酒精清洗打磨处。
4、钝化：把调配好的钝化液均匀涂在打磨处6秒。
钝化槽液成份
5、无水酒精清洗：用脱脂棉粘无水酒精清洗钝化处。
6、吹干：用吹风机吹干即可。
经过上述方法补修的钝化膜光量完整符合工艺要求。

Claims (3)

1.一种镀锌钝化膜修复的工艺方法，其特征是，
(1)配制钝化液
依次加入硫酸、铬酐、硝酸、氟化盐，每加入一种化学药品时，同时搅拌均匀，搅拌均匀后再加入下一化学药品，液体的施工温度为30-40℃；
(2)修补前处理
将需要修补处用汽油擦洗干净，用脱脂棉浸水再蘸清洗去污用百洁粉，把划伤处打磨干净，之后再用脱脂棉蘸无水酒精清洗打磨处，直至修补处擦洗干净；
(3)修补钝化膜
将配制好的钝化液涂覆在修复表面，保持5-10秒后用脱脂棉粘无水酒精清洗钝化处，用吹风机吹干即可。
2.根据权利要求1所述的一种镀锌钝化膜修复的工艺方法，其特征是，所述钝化液调配时加入硫酸后，待溶液冷却后再按顺序填加其它药品。
3.根据权利要求1所述的一种镀锌钝化膜修复的工艺方法，其特征是，所述修补钝化膜过程中，修补前处理后要马上进行钝化处理,放置时间小于3分钟。
CN201811019231.1A 2018-08-31 2018-08-31 一种镀锌钝化膜修复的工艺方法 Pending CN109338349A (zh)

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CN115595523A (zh) * 2022-10-28 2023-01-13 安徽实友电力金具有限公司（Cn） 一种三角联板连接金具的生产方法

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