CN107557780A - A kind of surface full non-chromium inactivating technique of zinc-plated handware - Google Patents
A kind of surface full non-chromium inactivating technique of zinc-plated handware Download PDFInfo
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- CN107557780A CN107557780A CN201710810343.8A CN201710810343A CN107557780A CN 107557780 A CN107557780 A CN 107557780A CN 201710810343 A CN201710810343 A CN 201710810343A CN 107557780 A CN107557780 A CN 107557780A
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- chromium
- handware
- passivation
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Abstract
The invention discloses a kind of full non-chromium inactivating technique in surface of galvanizing handware, comprise the following steps：1）Activation；2）Washing, drying；3）Passivation：By step 2）Handware after drying is impregnated into full chromium-free passivation liquid, and natural air drying is taken out after 35 50s of dipping passivation, i.e., the galvanizing handware one layer of corrosion resistance of surface attachment completely without chromium passivation film；Wherein, the formula of the full chromium-free passivation liquid is：The 30g/L of phytic acid 25, the 22g/L of tannic acid 15, the 15g/L of nano silicon 10, the 24g/L of sodium nitrate 20, the 8g/L of brightener 4, the 9g/L of complexing agent 5.By the above-mentioned means, present invention process is simple and easy to control, cost is low, using the full chromium-free passivation liquid of reasonable mixture ratio, and carry out before passivation activating preceding processing, the conjugation of passivating film and handware matrix can be improved, and the passivating film is free of the chromium of any valence state, safety and environmental protection, while corrosion resistance and good.
Description
Technical field
It is blunt completely without chromium more particularly to a kind of surface of zinc-plated handware the present invention relates to hardware processing technology field
Chemical industry skill.
Background technology
To improve the decay resistance of galvanizing handware, it is necessary to carry out surface passivating treatment to it, and existing passivation
Generally use chromating is handled, due to containing Cr VI in chromate, it has very strong carcinogenicity, and the world is each in recent years
State all formulates the use that regulation strictly limits chromate, and existing chromium-free deactivation processing cost is high, and obtain passivating film with
The defects of certain be present in the adhesive force and corrosion resistance of matrix.
The content of the invention
, can the present invention solves the technical problem of a kind of full non-chromium inactivating technique in surface of zinc-plated handware is provided
Solves drawbacks described above existing for existing passivation technology.
In order to solve the above technical problems, one aspect of the present invention is：A kind of galvanizing handware is provided
The full non-chromium inactivating technique in surface, comprises the following steps：
1）Activation：The handware that galvanizing terminates is impregnated into rapidly in 50% sodium hydroxide solution and carries out activation 20-30s；
2）Washing, drying：With deionized water to step 1）Handware after activation carries out high pressure washing, removes the hydrogen of remained on surface
Sodium hydroxide solution, then take out and dried at 80-100 DEG C；
3）Passivation：By step 2）Handware after drying is impregnated into full chromium-free passivation liquid, is taken out certainly after dipping passivation 35-50s
So air-dry, i.e., the galvanizing handware one layer of corrosion resistance of surface attachment completely without chromium passivation film；Wherein, it is described completely without chromium
The formula of passivating solution is：Phytic acid 25-30g/L, tannic acid 15-22g/L, nano silicon 10-15g/L, sodium nitrate 20-24g/
L, brightener 4-8g/L, complexing agent 5-9g/L.
In a preferred embodiment of the present invention, step 3）In, the temperature of the full chromium-free passivation liquid is 75-80 DEG C.
In a preferred embodiment of the present invention, the formula of the full chromium-free passivation liquid is：Phytic acid 28g/L, tannic acid
18g/L, nano silicon 13/L, sodium nitrate 23g/L, brightener 6g/L, complexing agent 7g/L.
In a preferred embodiment of the present invention, affiliated corrosion resistance is 12-18 μm completely without the thickness of chromium passivation film.
The beneficial effects of the invention are as follows：Present invention process is simple and easy to control, and cost is low, using reasonable mixture ratio completely without chromium passivating
Liquid, and carry out before passivation activating preceding processing, can improve the conjugation of passivating film and handware matrix, and the passivating film is without appointing
The chromium of what valence state, safety and environmental protection, while corrosion resistance and good.
Embodiment
Presently preferred embodiments of the present invention is described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that apparent clearly defined so as to be made to protection scope of the present invention.
The embodiment of the present invention includes：
Embodiment one
A kind of full non-chromium inactivating technique in surface of galvanizing handware, comprises the following steps：
1）Activation：The handware that galvanizing terminates is impregnated into rapidly in 50% sodium hydroxide solution and carries out activation process 25s；
2）Washing, drying：With deionized water to step 1）Handware after activation carries out high pressure washing, removes the hydrogen of remained on surface
Sodium hydroxide solution, then take out and dried at 80 DEG C；
3）Passivation：By step 2）Handware after drying is impregnated into the full chromium-free passivation liquid that temperature is 75 DEG C, dipping passivation 35s
After take out natural air drying, i.e., surface attachment a layer thickness of the galvanizing handware be 15 μm corrosion resistance it is blunt completely without chromium
Change film；Wherein, the formula of the full chromium-free passivation liquid is：Phytic acid 28g/L, tannic acid 18g/L, nano silicon 13/L, nitre
Sour sodium 23g/L, brightener 6g/L, complexing agent 7g/L.
Embodiment two
A kind of full non-chromium inactivating technique in surface of galvanizing handware, comprises the following steps：
1）Activation：The handware that galvanizing terminates is impregnated into rapidly in 50% sodium hydroxide solution and carries out activation process 28s；
2）Washing, drying：With deionized water to step 1）Handware after activation carries out high pressure washing, removes the hydrogen of remained on surface
Sodium hydroxide solution, then take out and dried at 90 DEG C；
3）Passivation：By step 2）Handware after drying is impregnated into the full chromium-free passivation liquid that temperature is 80 DEG C, dipping passivation 40s
After take out natural air drying, i.e., surface attachment a layer thickness of the galvanizing handware be 17 μm corrosion resistance it is blunt completely without chromium
Change film；Wherein, the formula of the full chromium-free passivation liquid is：Phytic acid 26g/L, tannic acid 20g/L, nano silicon 12/L, nitre
Sour sodium 22g/L, brightener 5g/L, complexing agent 8g/L.
Present invention is disclosed a kind of full non-chromium inactivating technique in surface of galvanizing handware, technique is simple and easy to control, and cost is low,
Using the full chromium-free passivation liquid of reasonable mixture ratio, and carry out before passivation activating preceding processing, passivating film and handware matrix can be improved
Conjugation, and the passivating film is free of the chromium of any valence state, safety and environmental protection, while corrosion resistance and good.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, it is included within the scope of the present invention.
Claims (4)
1. the full non-chromium inactivating technique in surface of a kind of galvanizing handware, it is characterised in that comprise the following steps：
1）Activation：The handware that galvanizing terminates is impregnated into rapidly in 50% sodium hydroxide solution and carries out activation 20-30s；
2）Washing, drying：With deionized water to step 1）Handware after activation carries out high pressure washing, removes the hydrogen of remained on surface
Sodium hydroxide solution, then take out and dried at 80-100 DEG C；
3）Passivation：By step 2）Handware after drying is impregnated into full chromium-free passivation liquid, is taken out certainly after dipping passivation 35-50s
So air-dry, i.e., the galvanizing handware one layer of corrosion resistance of surface attachment completely without chromium passivation film；Wherein, it is described completely without chromium
The formula of passivating solution is：Phytic acid 25-30g/L, tannic acid 15-22g/L, nano silicon 10-15g/L, sodium nitrate 20-24g/
L, brightener 4-8g/L, complexing agent 5-9g/L.
2. the full non-chromium inactivating technique in surface of galvanizing handware according to claim 1, it is characterised in that step 3）
In, the temperature of the full chromium-free passivation liquid is 75-80 DEG C.
3. the full non-chromium inactivating technique in surface of galvanizing handware according to claim 1, it is characterised in that it is described completely without
The formula of chromium passivating liquid is：Phytic acid 28g/L, tannic acid 18g/L, nano silicon 13/L, sodium nitrate 23g/L, brightener 6g/
L, complexing agent 7g/L.
4. the full non-chromium inactivating technique in surface of galvanizing handware according to claim 1, it is characterised in that affiliated corrosion resistant
Corrosion is 12-18 μm completely without the thickness of chromium passivation film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710810343.8A CN107557780A (en) | 2017-09-11 | 2017-09-11 | A kind of surface full non-chromium inactivating technique of zinc-plated handware |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710810343.8A CN107557780A (en) | 2017-09-11 | 2017-09-11 | A kind of surface full non-chromium inactivating technique of zinc-plated handware |
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| CN107557780A true CN107557780A (en) | 2018-01-09 |
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| CN201710810343.8A Pending CN107557780A (en) | 2017-09-11 | 2017-09-11 | A kind of surface full non-chromium inactivating technique of zinc-plated handware |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044896A (en) * | 2022-06-23 | 2022-09-13 | 上海聚丰热镀锌有限公司 | Hot galvanizing passivation solution and passivation method |
Citations (5)
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|---|---|---|---|---|
| CN101886260A (en) * | 2010-07-08 | 2010-11-17 | 南通飞拓生物科技有限公司 | Composite film chromium-free passivant |
| CN102373453A (en) * | 2010-08-05 | 2012-03-14 | 攀钢集团钢铁钒钛股份有限公司 | Chromium-free passivation solution and hot-dip galvanized metal material |
| CN102747352A (en) * | 2012-07-03 | 2012-10-24 | 中国人民解放军国防科学技术大学 | Passivator and passivation for hot galvanized sheet |
| CN104018148A (en) * | 2014-06-25 | 2014-09-03 | 钱宏彬 | Batch hot-dip galvanizing chromium-free passivator and application method thereof |
| CN104451632A (en) * | 2014-11-14 | 2015-03-25 | 无锡伊佩克科技有限公司 | Low-temperature passivating agent for galvanized steel sheet and preparation method of low-temperature passivating agent |
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2017
- 2017-09-11 CN CN201710810343.8A patent/CN107557780A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886260A (en) * | 2010-07-08 | 2010-11-17 | 南通飞拓生物科技有限公司 | Composite film chromium-free passivant |
| CN102373453A (en) * | 2010-08-05 | 2012-03-14 | 攀钢集团钢铁钒钛股份有限公司 | Chromium-free passivation solution and hot-dip galvanized metal material |
| CN102747352A (en) * | 2012-07-03 | 2012-10-24 | 中国人民解放军国防科学技术大学 | Passivator and passivation for hot galvanized sheet |
| CN104018148A (en) * | 2014-06-25 | 2014-09-03 | 钱宏彬 | Batch hot-dip galvanizing chromium-free passivator and application method thereof |
| CN104451632A (en) * | 2014-11-14 | 2015-03-25 | 无锡伊佩克科技有限公司 | Low-temperature passivating agent for galvanized steel sheet and preparation method of low-temperature passivating agent |
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| Title |
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| 张英杰等: "《镀锌无铬钝化技术》", 31 October 2014, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044896A (en) * | 2022-06-23 | 2022-09-13 | 上海聚丰热镀锌有限公司 | Hot galvanizing passivation solution and passivation method |
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Application publication date: 20180109 |