CN1075566C - Treating method for oxide layer on aluminium far-infrared reflector - Google Patents
Treating method for oxide layer on aluminium far-infrared reflector Download PDFInfo
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- CN1075566C CN1075566C CN98113836A CN98113836A CN1075566C CN 1075566 C CN1075566 C CN 1075566C CN 98113836 A CN98113836 A CN 98113836A CN 98113836 A CN98113836 A CN 98113836A CN 1075566 C CN1075566 C CN 1075566C
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- reflector
- mixed solution
- far infrared
- aluminium
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Abstract
The present invention relates to a processing method for an oxide layer on an aluminium far infrared reflecting cover. Firstly, the surface of a far infrared reflecting cover which is oxygenized, carbonized and less effective is washed by clear water; then, the surface is scrubbed by sulfuric acid solution, hydrochloric acid solution and sodium sulphate solution; subsequently, the surface is coated with citric acid solution and caustic soda solution to be bright, the luster of the reflecting cover is recovered, and the original design level is reached.
Description
The present invention relates to a kind of method of removing the aluminium surface oxide layer, particularly remove the lip-deep zone of oxidation method of far infrared rays reflector aluminium.
A few days ago, big-and-middle-sized fuel-burning power plant, part has adopted the far infra-red heater coal that thaws.Aluminium far-infrared reflector is housed in greenhouse.Because of infrared ray heating tube can reach 400-800 ℃, the temperature height has quickened oxidation, the carbonization on aluminum reflector surface, uses just tarnish after 2 years, surface blackening, and reflection efficiency descends.As, it is thick that 300-400mm is frozen on the coal surface, and former just can melt with 3-4 hour, and because of reflector surface oxidation, carbonization, changing same coal needs 5-6 hour, and reflection efficiency drops to 30%.Recover the gloss of reflector, reach original design level, must change reflector, need ten thousand yuan of cost 60-74.
For overcoming above-mentioned shortcoming, the invention provides a kind of treatment process of oxide layer on aluminium far-infrared reflector.
The object of the present invention is achieved like this: at first far infrared rays reflector surface already oxidised, carbonization is washed with clear water earlier, use the sulfuric acid of 10-20% (weight), the mixed solution of hydrochloric acid to mix then with the metabisulfite solution of 80-90% (weight), forming mixed solution cleans, smear to light with citric acid and caustic soda mixed solution again, use flushing with clean water at last.
In the mixed solution of sulfuric acid, hydrochloric acid, sulfuric acid 60% (weight), hydrochloric acid 40% (weight).In citric acid and caustic soda mixed solution, citric acid 10-15% (weight), caustic soda 85-90% (weight).
Treatment process of the present invention is simple, can make full use of the reflector that falls effect, less investment, instant effect.As, be loaded with the railway carriage that dress in the 13-16 joint freezes coal, by the greenhouse that aluminium far-infrared reflector the is housed coal that thaws, need reflector 3744-4608 piece (288 of every joint parking stalls), every 160 yuan, need Renminbi 599040-737280 unit, change reflector and need ten thousand yuan of 60-74.As, use the inventive method, handle the reflector that falls effect and only need ten thousand yuan of 10--15, save great amount of investment.Handle once, can use 2 years.Owing to use certain density acid limitedly, use flushing with clean water again, make cover body injury-free, the reflector of a 0.5-0.7mm can be handled 15-20 time.
The invention will be further described below in conjunction with embodiment.
Embodiment: at first claim sulfuric acid 600 grams, hydrochloric acid 400 grams, sodium sulfate 9000 grams are mixed with 10000 gram scouring solutions.With citric acid 150 grams, caustic soda 850 grams, be mixed with the glazing solution of 1000 grams.Decontamination is washed with clear water earlier in already oxidised far infrared rays reflector surface, clean with above-mentioned sulfuric acid, hydrochloric acid and sodium sulfate mixed solution then, smear to light with citric acid and caustic soda mixed solution again, get final product with flushing with clean water at last.
Claims (3)
1, the lip-deep zone of oxidation method of a kind of removal far infrared rays reflector aluminium, it is characterized in that far infrared rays reflector surface is washed with clear water earlier, use the sulfuric acid of 10-20% (weight), the mixed solution of hydrochloric acid to mix then with the metabisulfite solution of 80-90% (weight), forming mixed solution cleans, smear to light with citric acid and caustic soda mixed solution again, use flushing with clean water at last.
2, by the lip-deep zone of oxidation method of the described removal far infrared rays of claim 1 reflector aluminium, it is characterized in that in the mixed solution of sulfuric acid, hydrochloric acid sulfuric acid 60% (weight), hydrochloric acid 40% (weight).
3, by the lip-deep zone of oxidation method of the described removal far infrared rays of claim 1 reflector aluminium, it is characterized in that in citric acid and the caustic soda mixed solution citric acid 10-15% (weight), caustic soda 85-90% (weight)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113836A CN1075566C (en) | 1998-03-13 | 1998-03-13 | Treating method for oxide layer on aluminium far-infrared reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113836A CN1075566C (en) | 1998-03-13 | 1998-03-13 | Treating method for oxide layer on aluminium far-infrared reflector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1229149A CN1229149A (en) | 1999-09-22 |
| CN1075566C true CN1075566C (en) | 2001-11-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98113836A Expired - Fee Related CN1075566C (en) | 1998-03-13 | 1998-03-13 | Treating method for oxide layer on aluminium far-infrared reflector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1075566C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259977A (en) * | 2012-11-23 | 2015-01-07 | 江苏顺发电热材料有限公司 | Electric heating tube roll finish treatment process capable of prolonging service life of electric heating tube |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047115A (en) * | 1989-05-11 | 1990-11-21 | 郑小达 | Remove the pickling agent of oxide layer on stainless steel surface |
| CN1152632A (en) * | 1996-10-17 | 1997-06-25 | 周国桢 | One stage method pretreating liquid for aluminium material oxidation pretreatment |
| CN1185762A (en) * | 1995-05-30 | 1998-06-24 | 亨凯尔公司 | Acidic cleaning composition and process for aluminiferous metals |
-
1998
- 1998-03-13 CN CN98113836A patent/CN1075566C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047115A (en) * | 1989-05-11 | 1990-11-21 | 郑小达 | Remove the pickling agent of oxide layer on stainless steel surface |
| CN1185762A (en) * | 1995-05-30 | 1998-06-24 | 亨凯尔公司 | Acidic cleaning composition and process for aluminiferous metals |
| CN1152632A (en) * | 1996-10-17 | 1997-06-25 | 周国桢 | One stage method pretreating liquid for aluminium material oxidation pretreatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1229149A (en) | 1999-09-22 |
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