CN102877078A - Cleaning agent for surface coating films of non-oriented electrical steels and cleaning method - Google Patents
Cleaning agent for surface coating films of non-oriented electrical steels and cleaning method Download PDFInfo
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- CN102877078A CN102877078A CN2012103458652A CN201210345865A CN102877078A CN 102877078 A CN102877078 A CN 102877078A CN 2012103458652 A CN2012103458652 A CN 2012103458652A CN 201210345865 A CN201210345865 A CN 201210345865A CN 102877078 A CN102877078 A CN 102877078A
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- electrical steel
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- cleaning
- coating films
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Abstract
The invention relates to a cleaning agent for surface coating films of non-oriented electrical steels, consisting of the following components by weight percentage: 2-10% of sodium hexametaphosphate, 3-15% of sodium carbonate, 8-20% of sodium polyphosphate; 10-30% of caustic soda, 1-3% of poly-oxylethyleneallkylphenyl ether, 0.1-0.3% of tributyl phosphate and the balance of water. Prepared preparation is poured into a cleaning groove and heated to 80-90 DEGC; electrical steel pieces with the coating films to be cleaned are vertically put into the cleaning agent, dipped for 30-50 s and then taken out; the surfaces of the electrical steel pieces are rapidly cleaned in the water and wiped by assisting while cleaning; and the coating films fall off fully. The cleaning agent is operated simply and high-efficiency and has no corrosion for the surfaces of the electrical steels so as to achieve the purpose of fully cleaning the surface coating films.
Description
Technical field
The present invention relates to the environment-friendly coating membrane washing agent of a kind of non-oriented electrical steel surface, belong to exotic materials and clean the field.
Background technology
Cold rolling non-oriented electrical steel mainly is used in all kinds motor, and when motor moved under certain frequency, alternating magnetic field caused the generation of eddy-current loss.For reducing the generation of eddy-current loss, need to apply insulating coating at surface of steel plate, insulating coating not only has good insulativity, tack, solidity to corrosion, simultaneously for satisfying the demand of motor user processing and motor operation itself, also need it that some other performance such as punching, weldability, cohesiveness, thermotolerance, oil-proofness etc. are arranged.
Insulating coating is generally half inorganic coating that contains chromium.Such as T4, the T5 coating of Wuhan Iron and Steel Plant, the G2 coating of the A of Baosteel, H coating and Taiyuan Iron and Steel Co..Progress along with science and technology, people recognize the serious consequence that chromium brings to environment gradually, especially European Union released WEEE and two instructions of ROHS of environmental requirement in 2003, stipulate must not contain in the electric equipment products of import in the end of the year 2006 European Union after six kinds of harmful elements such as sexavalent chrome, electrical steel manufacturer carries out the development, on probation of chromium-free environment-friendly coating one after another both at home and abroad.In the last few years, the electrical steel product of chromium-free environment-friendly coating was put on market successively, and along with increasingly strict with environmental regulation of improving constantly of people's environmental consciousness, it will be the inexorable trend of electrical steel development that the chromium-free environment-friendly coating replaces Chromium coating.
Generally speaking, adopt half inorganic environment-friendly coating liquid, use rubber rollers to apply under certain pressure, then carry out at a certain temperature oven dry and the sintering of coating, it is the insulating coating film of 0.5～5um that the electrical steel surface forms thickness.
But in order to detect carbon content in the electrical steel finished product and the purpose of other research, need to wash its surperficial environment-friendly coating film, also not have a kind of preparation and method for cleaning the electrical steel surface and do not contain chromium environment-friendly coating film at present.
Summary of the invention
The invention reside in provides a kind of easy and simple to handle, efficient and to cleaning agent and the purging method of the free from corrosion non-oriented electrical steel top coat in metallic surface, reaches the purpose of thorough removing top coat film.
Technical scheme
1, a kind of preparation that cleans non-oriented electrical steel surface environment-friendly coating film forms (weight percentage) by following prescription:
Sodium hexametaphosphate 99 2～10%
Yellow soda ash 3～15%
Sodium polyphosphate 8～20%
Caustic soda 10～30%
Nonionogenic tenside 1～3%
Tributyl phosphate 0.1～0.3%
All the other are water
Coating cleaning film preparation of the present invention mixes in the ratio of said components, and stirring gets final product.
Described nonionogenic tenside is polyoxyethylene octyl phenolic ether.
2, the method for cleaning non-oriented electrical steel surface environment-friendly coating film is:
1) above-mentioned cleaning agent is poured in the rinse bath, be heated to 80～90 ℃;
2) electrical sheet that scribbles coated membrane to be cleaned is vertically put into rinse bath, make it to be immersed in the cleaning agent, take out behind immersion 30～50s;
3) under flowing water the electrical sheet surface is washed rapidly, can be assisted effects on surface to carry out wiping in the time of flushing, coated membrane can all come off, and the surface presents the bright look of metal;
Avoid washing the electrical steel surface oxidisation of coated membrane, should place it in immediately and contain in the spirituous pallet, immediately oven dry after the taking-up.
Purging method of the present invention is easy and simple to handle, efficient and to the electrical steel metallic surface without corrosion, reach the purpose of thorough removing top coat film.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1:
Sodium hexametaphosphate 99 5%
Yellow soda ash 10%
Sodium polyphosphate 13%
Caustic soda 20%
Polyoxyethylene octyl phenolic ether 2%
Tributyl phosphate 0.2%
All the other are water.
According to the prescription of above-mentioned weight percent, stirring obtains cleaning agent.
The cleaning agent that has prepared is poured in the rinse bath, be heated to 80 ℃, the electrical sheet that scribbles coated membrane to be cleaned is vertically put into clean-out system, take out after soaking 35s, under flowing water, the electrical sheet surface is washed rapidly, can assist effects on surface to carry out wiping in the time of flushing, coated membrane can all come off, for avoiding washing the electrical steel surface oxidisation of coated membrane, should be immediately the print of the coated membrane that comes off be placed on and contains in the spirituous pallet, immediately oven dry after the taking-up, at this moment the non-oriented electrical steel surface presents the bright look of metal.
Embodiment 2:
Sodium hexametaphosphate 99 3%
Yellow soda ash 7%
Sodium polyphosphate 10%
Caustic soda 15%
Polyoxyethylene octyl phenolic ether 1%
Tributyl phosphate 0.1%
All the other are water.
According to above-mentioned weight percent batching, stirring obtains cleaning agent.
The cleaning agent that has prepared is poured in the rinse bath, be heated to 90 ℃, the electrical sheet that scribbles coated membrane to be cleaned is vertically put into clean-out system, take out after soaking 40s, under flowing water, the electrical sheet surface is washed rapidly, can assist effects on surface to carry out wiping in the time of flushing, coated membrane can all come off, for avoiding washing the electrical steel surface oxidisation of coated membrane, should be immediately the print of the coated membrane that comes off be placed on and contains in the spirituous pallet, immediately oven dry after the taking-up, at this moment the non-oriented electrical steel surface presents the bright look of metal.
Claims (2)
1. a non-oriented electrical steel top coat film cleaning agent is characterized in that preparing burden by weight percentage: Sodium hexametaphosphate 99 2～10%, yellow soda ash 3～15%, sodium polyphosphate 8～20%, caustic soda 10～30%, polyoxyethylene octyl phenolic ether 1～3%, tributyl phosphate 0.1～0.3%, all the other are water.
2. non-oriented electrical steel top coat film purging method, it is characterized in that a kind of non-oriented electrical steel top coat film cleaning agent mixing claimed in claim 1 is poured in the rinse bath, be heated to 80～90 ℃, the non-oriented electrical steel sheet that scribbles coated membrane to be cleaned is vertically put into clean-out system, take out after soaking 30～50s, under flowing water, the electrical sheet surface is washed rapidly, can assist effects on surface to carry out wiping in the time of flushing, after coated membrane can all come off, immediately the non-oriented electrical steel sheet is placed on and contains in the spirituous pallet, take out post-drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210345865.2A CN102877078B (en) | 2012-09-18 | 2012-09-18 | Cleaning agent for surface coating films of non-oriented electrical steels and cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210345865.2A CN102877078B (en) | 2012-09-18 | 2012-09-18 | Cleaning agent for surface coating films of non-oriented electrical steels and cleaning method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102877078A true CN102877078A (en) | 2013-01-16 |
| CN102877078B CN102877078B (en) | 2014-06-04 |
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| CN201210345865.2A Active CN102877078B (en) | 2012-09-18 | 2012-09-18 | Cleaning agent for surface coating films of non-oriented electrical steels and cleaning method |
Country Status (1)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035442C (en) * | 1993-08-12 | 1997-07-16 | 武汉钢铁(集团)公司 | Cleaning agent for cold-rolled silicon steel plate |
| CN101092729A (en) * | 2007-04-11 | 2007-12-26 | 姜堰市德美化工有限公司 | Electrolytic spent meal in use for processing surfaces of ferrous metal, and preparation method |
| JP2010155904A (en) * | 2008-12-26 | 2010-07-15 | Kao Corp | Detergent composition for hard surface |
-
2012
- 2012-09-18 CN CN201210345865.2A patent/CN102877078B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035442C (en) * | 1993-08-12 | 1997-07-16 | 武汉钢铁(集团)公司 | Cleaning agent for cold-rolled silicon steel plate |
| CN101092729A (en) * | 2007-04-11 | 2007-12-26 | 姜堰市德美化工有限公司 | Electrolytic spent meal in use for processing surfaces of ferrous metal, and preparation method |
| JP2010155904A (en) * | 2008-12-26 | 2010-07-15 | Kao Corp | Detergent composition for hard surface |
Non-Patent Citations (2)
| Title |
|---|
| 徐樟松: "磷酸盐在金属清洗剂中的应用", 《适用技术市场》, no. 6, 30 June 1995 (1995-06-30) * |
| 贾成义: "电工钢的化学脱脂", 《河北化工》, no. 4, 31 December 2005 (2005-12-31), pages 31 - 33 * |
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| CN102877078B (en) | 2014-06-04 |
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