CN103484878B - A kind of method removing paint layer on surface of workpiece - Google Patents
A kind of method removing paint layer on surface of workpiece Download PDFInfo
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- CN103484878B CN103484878B CN201310441167.7A CN201310441167A CN103484878B CN 103484878 B CN103484878 B CN 103484878B CN 201310441167 A CN201310441167 A CN 201310441167A CN 103484878 B CN103484878 B CN 103484878B
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- paint
- workpiece
- removing liquid
- paint layer
- enamelled coating
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Abstract
The present invention discloses a kind of method removing paint layer on surface of workpiece, after the method comprises the steps: that workpiece is incubated 10 ~ 20 minutes at-20 ~-30 DEG C, be immersed into ultrasonication 30 ~ 50min in paint-removing liquid, wherein, described paint-removing liquid is containing the sodium hydroxide of 2 ~ 5wt%, the sodium laurylsulfonate of 0.5 ~ 1.5wt%, the disodium-hydrogen of 0.01 ~ 1wt%, surplus is water.The inventive method is simple to operate, and paint removal is effective, applied widely, and environmental pollution is few.
Description
Technical field
The present invention relates to a kind of method removing paint layer on surface of workpiece.
Background technology
The phenomenons such as the enamelled coating of workpiece surface is aging because long-term exposure can go out, come off, or workpiece is when keeping in repair, and as welding, needs the enamelled coating of workpiece surface thoroughly to remove, again to spray paint or to keep in repair.Existing method of chemical treatment paint remover used is mostly organic solvent type, big for environment pollution.Baking thermal treatment rule easily produces obnoxious flavour, and has a negative impact to workpiece substrate.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of method removing paint layer on surface of workpiece.
To achieve these goals, the invention provides following technical scheme:
A kind of method removing paint layer on surface of workpiece, after comprising the steps: that workpiece is incubated 10 ~ 20 minutes at-20 ~-30 DEG C, be immersed into ultrasonication 30 ~ 50min in paint-removing liquid, wherein, described paint-removing liquid is containing the sodium hydroxide of 2 ~ 5wt%, the sodium laurylsulfonate of 0.5 ~ 1.5wt%, the disodium-hydrogen of 0.01 ~ 1wt%, surplus is water.
Further, the temperature of described paint-removing liquid is 35 ~ 45 DEG C.
Further, described hyperacoustic frequency is 1 ~ 10MHz.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment 1
The preparation of sample: spray the enamelled coating that one deck 0.2mm is thick on the steel plate through sanding and polishing process, paint vehicle is red lion board alcohol acid antirust paint, carries out spraying operation according to the description of product.
The steel plate of spraying enamelled coating is cooled to-30 DEG C, keep at such a temperature after 15 minutes, immersing temperature is rapidly that in the paint-removing liquid of 35 DEG C, (in paint-removing liquid, the concentration of sodium hydroxide is 5wt%, and the concentration of sodium laurylsulfonate is 1wt%, the concentration of disodium-hydrogen is 0.01wt%, 100% is supplied with water), be the ultrasonication 30min of 5MHz by frequency simultaneously, take out, rinse, the enamelled coating of surface of steel plate comes off completely, places after 2 hours, does not return rust.
Reference examples 1: the steel plate of spraying enamelled coating is without cooling process, direct immersion temperature is in the paint-removing liquid of 35 DEG C, paint-removing liquid is that (concentration of sodium hydroxide is 5wt% for the mixed aqueous solution of sodium hydroxide and sodium laurylsulfonate, the concentration of sodium laurylsulfonate is 1wt%), be the ultrasonication 30min of 5MHz by frequency simultaneously, take out, rinse, the enamelled coating of surface of steel plate removes area 73 ~ 75%, places after 2 hours, exists and slightly returns rust.
Embodiment 2
The preparation of sample: spray the enamelled coating that one deck 0.3mm is thick on the steel plate through sanding and polishing process, paint vehicle is old man's board epoxy-based lacquers 15570, carries out spraying operation according to the description of product.
The steel plate of spraying enamelled coating is cooled to-20 DEG C, keep at such a temperature after 20 minutes, immersing temperature is rapidly that in the paint-removing liquid of 45 DEG C, (in paint-removing liquid, the concentration of sodium hydroxide is 2wt%, and the concentration of sodium laurylsulfonate is 1.5wt%, the concentration of disodium-hydrogen is 0.05wt%, 100% is supplied with water), be the ultrasonication 30min of 10MHz by frequency simultaneously, take out, rinse, the enamelled coating of surface of steel plate comes off completely, places after 2 hours, does not return rust.
Reference examples 2: the steel plate of spraying enamelled coating is without cooling process, direct immersion temperature is in the paint-removing liquid of 45 DEG C, paint-removing liquid is that (concentration of sodium hydroxide is 2wt% for the mixed aqueous solution of sodium hydroxide and sodium laurylsulfonate, the concentration of sodium laurylsulfonate is 1.5wt%), be the ultrasonication 30min of 10MHz by frequency simultaneously, take out, rinse, the enamelled coating of surface of steel plate removes area 77 ~ 78%, places after 2 hours, exists and slightly returns rust.
Embodiment 3
The preparation of sample: spray the enamelled coating that one deck 0.4mm is thick on the steel plate through sanding and polishing process, paint vehicle is red lion board alcohol acid antirust paint, carries out spraying operation according to the description of product.
The steel plate of spraying enamelled coating is cooled to-25 DEG C, keep at such a temperature after 10 minutes, immersing temperature is rapidly that in the paint-removing liquid of 45 DEG C, (in paint-removing liquid, the concentration of sodium hydroxide is 4wt%, and the concentration of sodium laurylsulfonate is 0.5wt%, the concentration of disodium-hydrogen is 0.1wt%, 100% is supplied with water), be the ultrasonication 50min of 1MHz by frequency simultaneously, take out, rinse, the enamelled coating of surface of steel plate comes off completely, places after 2 hours, does not return rust.
Reference examples 3: the steel plate of spraying enamelled coating is without cooling process, direct immersion temperature is in the paint-removing liquid of 45 DEG C, paint-removing liquid is that (concentration of sodium hydroxide is 4wt% for the mixed aqueous solution of sodium hydroxide and sodium laurylsulfonate, the concentration of sodium laurylsulfonate is 0.5wt%), be the ultrasonication 50min of 1MHz by frequency simultaneously, take out, rinse, the enamelled coating of surface of steel plate removes area 77 ~ 78%, places after 2 hours, exists and slightly returns rust.
Method of the present invention is mainly used in removing the epoxy-based lacquers of surface of workpiece, alkyd paint or unsaturated polyester lacquering, and simple to operate, paint removal is effective, applied widely, and environmental pollution is few.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. remove the method for paint layer on surface of workpiece for one kind, it is characterized in that, after comprising the steps: that workpiece is incubated 10 ~ 20 minutes at-20 ~-30 DEG C, be immersed into ultrasonication 30 ~ 50min in paint-removing liquid, wherein, described paint-removing liquid contains the sodium hydroxide of 2 ~ 5wt%, the sodium laurylsulfonate of 0.5 ~ 1.5wt%, the disodium-hydrogen of 0.01 ~ 1wt%, surplus is water.
2. remove the method for paint layer on surface of workpiece according to claim 1, it is characterized in that, the temperature of described paint-removing liquid is 35 ~ 45 DEG C.
3. remove the method for paint layer on surface of workpiece according to claim 1, it is characterized in that, described hyperacoustic frequency is 1 ~ 10MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310441167.7A CN103484878B (en) | 2013-09-26 | 2013-09-26 | A kind of method removing paint layer on surface of workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310441167.7A CN103484878B (en) | 2013-09-26 | 2013-09-26 | A kind of method removing paint layer on surface of workpiece |
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| Publication Number | Publication Date |
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| CN103484878A CN103484878A (en) | 2014-01-01 |
| CN103484878B true CN103484878B (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310441167.7A Active CN103484878B (en) | 2013-09-26 | 2013-09-26 | A kind of method removing paint layer on surface of workpiece |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104327588B (en) * | 2014-10-23 | 2016-09-28 | 青岛金智高新技术有限公司 | A kind of powdered metallurgical material paint stripper and preparation method thereof |
| CN107299350A (en) * | 2017-06-20 | 2017-10-27 | 江苏军威电子科技有限公司 | A kind of metal tools surface anti-corrosion treatment process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887979A (en) * | 2006-07-14 | 2007-01-03 | 北京科技大学 | Green alkaline paint remover for eliminating coating from electronic circuit board and its prepn and usage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09131578A (en) * | 1995-11-10 | 1997-05-20 | Yoshino Shokai:Kk | Removing method of coating material on coating jig or hanger |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887979A (en) * | 2006-07-14 | 2007-01-03 | 北京科技大学 | Green alkaline paint remover for eliminating coating from electronic circuit board and its prepn and usage |
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| CN103484878A (en) | 2014-01-01 |
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Effective date of registration: 20170516 Address after: 226623 Chengbei Industrial Zone, Haian County, Jiangsu, Nantong Patentee after: JIANGSU PENGFEI GROUP Co.,Ltd. Address before: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20170516 Address after: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 214000 Jiangsu city in Wuxi Province Economic Development Zone Huishan Spring Road No. 588 Patentee before: WUXI YANGGONG MACHINERY MANUFACTURING Co.,Ltd. |