CN105441927A - Chromate-free passivant for cold-roll steel sheet and galvanized steel sheet roller coating before coating and preparing method - Google Patents
Chromate-free passivant for cold-roll steel sheet and galvanized steel sheet roller coating before coating and preparing method Download PDFInfo
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- CN105441927A CN105441927A CN201510880368.6A CN201510880368A CN105441927A CN 105441927 A CN105441927 A CN 105441927A CN 201510880368 A CN201510880368 A CN 201510880368A CN 105441927 A CN105441927 A CN 105441927A
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Abstract
The invention discloses chromate-free passivant for cold-roll steel sheet and galvanized steel sheet roller coating before coating. According to the chromate-free passivant for cold-roll steel sheet and galvanized steel sheet roller coating, the bonding force between a surface and a roller coating film can reach the level 0. The chromate-free passivant includes, by mass percent, 4-8% of hexafluorozirconic acid with the mass concentration being 50%, 0.1-0.6% of phytic acid with the mass concentration being 50%, 0.1-0.8% of citric acid, 0.5-1.5% of sodium bromated, 0.1-0.5% of ammonium molybdate, 0.5-1.5% of manganous nitrate, 0.1-0.5% of ferric nitrate, 1-2.5% of ammonium bicarbonate, 1-2.5% of ammonium bifluoride and the balance pure water. The preparing method includes the steps that the pure water which is calculated and weighed is added into a stainless steel reaction kettle, a stirrer is started, and the rotating speed is controlled to be 60-80 turns per minute; and then the hexafluorozirconic acid, the phytic acid, the citric acid, the sodium bromated, the ammonium molybdate, the manganous nitrate, the ferric nitrate, the ammonium bicarbonate and the ammonium bifluoride which are calculated and weighed are slowly added into the reaction kettle in sequence, and stirring is conducted while adding is performed till a solution is in a maize-yellow or light brown transparent state.
Description
Technical field
The present invention relates to a kind of metal epithelium treatment agent, especially a kind of surface and roller coat film layer bonding force of making reaches chrome-free tanning agent and preparation method before the cold-rolled steel sheet galvanized steel sheet roller painting application of 0 grade.
Background technology
The sheet metal surfaces such as cold-rolled steel sheet steel plate galvanized have grease, floating rust, heavily rust, oxide skin etc., therefore before the art breading such as roller coat application, all need above-mentioned oily scale etc. is disposed and mostly needs Passivation Treatment, its Surface Creation one deck is made to have the passive film of certain roughness, porousness, adsorptivity, to strengthen workpiece surface rotproofness, to improve workpiece surface and the sticking power being coated with interlayer or other organic surface treatment interlayers.Technical process as the roller coat application automatic production line of existing process for processing color steel (cold-rolled steel sheet, steel plate galvanized etc.) is: spray degreasing (bistrichiasis brush round brush) → spray washing → spray degreasing (bistrichiasis brush round brush) → spray washing → spray washing → spray washing → spray chromate treating → high bake → strong wind cooling → roller coat application → baking and curing.Wherein spraying chromate treating all adopts containing hypertoxic chromating technique substantially, and wastewater treatment is complicated and cost is large, is unfavorable for environment protection.And indivedual enterprise employs chrome-free tanning agent, but the bonding force of roller coat application paint film does not reach 0 grade standard.
Summary of the invention
The present invention is the above-mentioned technical problem in order to solve existing for prior art, provides a kind of surface and roller coat film layer bonding force of making to reach chrome-free tanning agent and preparation method before the cold-rolled steel sheet galvanized steel sheet roller painting application of 0 grade.。
Technical solution of the present invention is: chrome-free tanning agent before the application of a kind of cold-rolled steel sheet galvanized steel sheet roller painting, it is characterized in that raw materials used and mass percent is as follows: mass concentration 50% fluorine zirconic acid 4 ~ 8%, mass concentration 50% phytic acid 0.1 ~ 0.6%, citric acid 0.1 ~ 0.8%, sodium bromate 0.5 ~ 1.5%, ammonium molybdate 0.1 ~ 0.5%, manganous nitrate 0.5 ~ 1.5%, iron nitrate 0.1 ~ 0.5%, bicarbonate of ammonia 1 ~ 2.5%, ammonium bifluoride 1 ~ 2.5%, pure water surplus.
The preparation method of chrome-free tanning agent before a kind of above-mentioned cold-rolled steel sheet galvanized steel sheet roller painting application, it is characterized in that carrying out in accordance with the following steps: first join in stainless steel cauldron by calculating the pure water weighed, start agitator and control rotating speed 60 ~ 80 revs/min, then fluorine zirconic acid calculating weighed successively, phytic acid, citric acid, sodium bromate, ammonium molybdate, manganous nitrate, iron nitrate, bicarbonate of ammonia, ammonium bifluoride join in reactor slowly, stir while adding, until solution is beige or light brown clear shape.
The present invention containing components such as chromic salt, does not save cost for wastewater treatment, is beneficial to environment protection; Each component interaction, can make the bonding force of the cold-rolled steel sheet galvanized steel sheet surface after Passivation Treatment and roller coat film layer can reach 0 grade.
Embodiment
Embodiment 1:
Raw materials used and mass percent is as follows: mass concentration 50% fluorine zirconic acid 8%, mass concentration 50% phytic acid 0.1%, citric acid 0.8%, sodium bromate 0.5%, ammonium molybdate 0.5%, manganous nitrate 0.5%, iron nitrate 0.5%, bicarbonate of ammonia 1%, ammonium bifluoride 2.5%, pure water surplus.
Preparation method carries out in accordance with the following steps: first join in stainless steel cauldron by calculating the pure water weighed, start agitator and control rotating speed 60 ~ 80 revs/min, then fluorine zirconic acid calculating weighed successively, phytic acid, citric acid, sodium bromate, ammonium molybdate, manganous nitrate, iron nitrate, bicarbonate of ammonia, ammonium bifluoride join in reactor slowly, stir while adding, until solution is beige or light brown clear shape.
Embodiment 2:
Raw materials used and mass percent is as follows: mass concentration 50% fluorine zirconic acid 4%, mass concentration 50% phytic acid 0.6%, citric acid 0.8%, sodium bromate 0.5%, ammonium molybdate 0.1%, manganous nitrate 1.5%, iron nitrate 0.1%, bicarbonate of ammonia 2.5%, ammonium bifluoride 1%, pure water surplus.
Preparation method is with embodiment 1.
Embodiment 3:
Raw materials used and mass percent is as follows: mass concentration 50% fluorine zirconic acid 6%, mass concentration 50% phytic acid 0.4%, citric acid 0.5%, sodium bromate 1%, ammonium molybdate 0.25%, manganous nitrate 1%, iron nitrate 0.25%, bicarbonate of ammonia 1.5%, ammonium bifluoride 2%, pure water surplus.
Preparation method is with embodiment 1.
During use, the embodiment of the present invention 1,2 or 3 is added water by mass percentage 3 ~ 6%, normal temperature sprays 20 seconds.After tested, the cold-rolled steel sheet galvanized steel sheet surface after Passivation Treatment and the bonding force of roller coat film layer reach 0 grade.
Claims (2)
1. chrome-free tanning agent before cold-rolled steel sheet galvanized steel sheet roller painting application, it is characterized in that raw materials used and mass percent is as follows: mass concentration 50% fluorine zirconic acid 4 ~ 8%, mass concentration 50% phytic acid 0.1 ~ 0.6%, citric acid 0.1 ~ 0.8%, sodium bromate 0.5 ~ 1.5%, ammonium molybdate 0.1 ~ 0.5%, manganous nitrate 0.5 ~ 1.5%, iron nitrate 0.1 ~ 0.5%, bicarbonate of ammonia 1 ~ 2.5%, ammonium bifluoride 1 ~ 2.5%, pure water surplus.
2. the preparation method of chrome-free tanning agent before a cold-rolled steel sheet galvanized steel sheet roller painting as claimed in claim 1 application, it is characterized in that carrying out in accordance with the following steps: first join in stainless steel cauldron by calculating the pure water weighed, start agitator and control rotating speed 60 ~ 80 revs/min, then fluorine zirconic acid calculating weighed successively, phytic acid, citric acid, sodium bromate, ammonium molybdate, manganous nitrate, iron nitrate, bicarbonate of ammonia, ammonium bifluoride join in reactor slowly, stir while adding, until solution is beige or light brown clear shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510880368.6A CN105441927A (en) | 2015-12-04 | 2015-12-04 | Chromate-free passivant for cold-roll steel sheet and galvanized steel sheet roller coating before coating and preparing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510880368.6A CN105441927A (en) | 2015-12-04 | 2015-12-04 | Chromate-free passivant for cold-roll steel sheet and galvanized steel sheet roller coating before coating and preparing method |
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| CN105441927A true CN105441927A (en) | 2016-03-30 |
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| CN201510880368.6A Pending CN105441927A (en) | 2015-12-04 | 2015-12-04 | Chromate-free passivant for cold-roll steel sheet and galvanized steel sheet roller coating before coating and preparing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835098A (en) * | 2016-12-01 | 2017-06-13 | 三达奥克化学股份有限公司 | Environmentally friendly vitrification inorganic agent and production method before iron and steel parts electrophoretic painting |
| CN111005013A (en) * | 2019-12-23 | 2020-04-14 | 三达奥克化学股份有限公司 | Steel-aluminum universal environment-friendly rare earth metal chemical conversion film treating agent |
| CN114507860A (en) * | 2022-02-14 | 2022-05-17 | 浙江天地环保科技股份有限公司 | For CO2Novel corrosion inhibitor of chemical absorption device, preparation method and application |
Citations (4)
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| DE3222532C2 (en) * | 1982-06-16 | 1987-11-05 | Arno 5042 Erftstadt De Kuhlmann | |
| CN101665935A (en) * | 2009-09-27 | 2010-03-10 | 大连三达奥克化学股份有限公司 | Normal-temperature film passivating agent for processing before electro-coating of iron and steel workpiece and preparation method thereof |
| CN102719836A (en) * | 2012-06-21 | 2012-10-10 | 大连三达奥克化学股份有限公司 | High-pressure spraying treating agent before spray coating of mine truck tipping bin and preparation method |
| CN104711103A (en) * | 2013-12-14 | 2015-06-17 | 三达奥克化学股份有限公司 | Synthetic steel die chemical milling liquid and production method thereof |
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2015
- 2015-12-04 CN CN201510880368.6A patent/CN105441927A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3222532C2 (en) * | 1982-06-16 | 1987-11-05 | Arno 5042 Erftstadt De Kuhlmann | |
| CN101665935A (en) * | 2009-09-27 | 2010-03-10 | 大连三达奥克化学股份有限公司 | Normal-temperature film passivating agent for processing before electro-coating of iron and steel workpiece and preparation method thereof |
| CN102719836A (en) * | 2012-06-21 | 2012-10-10 | 大连三达奥克化学股份有限公司 | High-pressure spraying treating agent before spray coating of mine truck tipping bin and preparation method |
| CN104711103A (en) * | 2013-12-14 | 2015-06-17 | 三达奥克化学股份有限公司 | Synthetic steel die chemical milling liquid and production method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835098A (en) * | 2016-12-01 | 2017-06-13 | 三达奥克化学股份有限公司 | Environmentally friendly vitrification inorganic agent and production method before iron and steel parts electrophoretic painting |
| CN111005013A (en) * | 2019-12-23 | 2020-04-14 | 三达奥克化学股份有限公司 | Steel-aluminum universal environment-friendly rare earth metal chemical conversion film treating agent |
| CN111005013B (en) * | 2019-12-23 | 2021-11-23 | 三达奥克化学股份有限公司 | Steel-aluminum universal environment-friendly rare earth metal chemical conversion film treating agent |
| CN114507860A (en) * | 2022-02-14 | 2022-05-17 | 浙江天地环保科技股份有限公司 | For CO2Novel corrosion inhibitor of chemical absorption device, preparation method and application |
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Application publication date: 20160330 |