CN105696004A - Method for removing brass oxidation film - Google Patents
Method for removing brass oxidation film Download PDFInfo
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- CN105696004A CN105696004A CN201410701685.2A CN201410701685A CN105696004A CN 105696004 A CN105696004 A CN 105696004A CN 201410701685 A CN201410701685 A CN 201410701685A CN 105696004 A CN105696004 A CN 105696004A
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- water
- sulphuric acid
- concentrated sulphuric
- brass
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Abstract
The invention discloses a method for removing a brass oxidation film. The method is characterized in that the process of the method comprises the following steps that (1) degreasing treatment is conducted, and specifically, soaking is conducted in a degreasant for 10-20 min; (2) after degreasing, brass is put into a solution composed of ferric sulfate, concentrated sulfuric acid and water and soaked for 10-15 min at the indoor temperature; (3) the brass is put into a solution composed of sodium dichromate, concentrated sulfuric acid and water and soaked for 5-6 min at the indoor temperature; (4) the brass is put into cold water to be washed for 5-8 min; and (5) the brass is soaked into an ammonium hydroxide solution for 10-15 min, washed through distilled water and dried at the temperature of 30-40 DEG C. According to the method for removing the brass oxidation film, the process of the method is simple, through strict process parameter control, oxide skin can be removed fast, damage to a part substrate can be reduced, and removal is more thorough.
Description
Technical field
The invention belongs to field of surface treatment, specifically a kind of method removing pyrite oxide-film。
Background technology
Pyrite, its surface is susceptible to oxidation, generate the oxide-film of a kind of densification, its oxide-film is loose porous, it is necessary to this flavonod to be carried out anti-oxidation measure, the meeting pyrite parts to some very temperature sensitive in existing measure process, piece surface can be made to reach significantly high temperature, cause brass part deformation or crack, affecting the dimensional accuracy of part and normal use, time serious, also result in part breaking。In prior art, brass surfaces oxidation processing technique being had complex process, step is many, and part base solid damage is serious, removes the shortcomings such as not thorough。
Summary of the invention
It is an object of the invention to for Shortcomings part in above-mentioned technology, the present invention provides a kind of method removing pyrite oxide-film, and its technique is simple, can descale, and can reduce part base solid damage, remove the advantages such as more thorough。
The technical scheme realizing the object of the invention is as follows:
A kind of method removing pyrite oxide-film, it is characterised in that its technique comprises the following steps:
(1) ungrease treatment, impregnates 10-20min in degreasing agent；
(2) after defat, put in the solution being made up of iron sulfate, concentrated sulphuric acid, water, under ambient temperature, impregnate 10-15min；
(3) put in the solution being made up of sodium dichromate, concentrated sulphuric acid, water, under ambient temperature, impregnate 5-6min；
(4) put in 5-8 DEG C of cold water and wash 5-8min；
(5) immersing 10-15min in Ammonia, distilled water is cleaned, dry at 30-40 DEG C of temperature。
Preferably, described degreasing agent according to following material with components by weight percent: sodium gluconate 7-8 part, oleic acid triethanolamine amide 6-8 part, enuatrol 10-15 part, water 80-100 part, sodium metasilicate 8-10 part, sodium hydroxide 10-12 part。
Preferably, the solution of described iron sulfate, concentrated sulphuric acid, water composition；Described iron sulfate, concentrated sulphuric acid, water ratio of weight and number be 4-4.5:3-5:300-350。
Preferably, the solution of described concentrated sulphuric acid, sodium dichromate, water composition；Described concentrated sulphuric acid, sodium dichromate, water ratio of weight and number are 5-6:10-12:85-90。
A kind of method removing pyrite oxide-film of the present invention, its technique is simple, and by strict process parameter control, the speed that can descale is fast, can reduce part base solid damage, removes more thorough。
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
A kind of method removing pyrite oxide-film, it is characterised in that its technique comprises the following steps:
(1) ungrease treatment, impregnates 15min in degreasing agent；
(2) after defat, put in the solution being made up of iron sulfate, concentrated sulphuric acid, water, under ambient temperature, impregnate 12min；
(3) put in the solution being made up of sodium dichromate, concentrated sulphuric acid, water, under ambient temperature, impregnate 5min；
(4) put in 5 DEG C of cold water and wash 6min；
(5) immersing 12min in Ammonia, distilled water is cleaned, dry at 35 DEG C of temperature；
Described degreasing agent according to following material with components by weight percent: sodium gluconate 7 parts, oleic acid triethanolamine amide 6 parts, enuatrol 12 parts, 90 parts of water, sodium metasilicate 9 parts, sodium hydroxide 11 parts；
The solution of described iron sulfate, concentrated sulphuric acid, water composition；Described iron sulfate, concentrated sulphuric acid, water ratio of weight and number be 4:4:320；
The solution of described concentrated sulphuric acid, sodium dichromate, water composition；Described concentrated sulphuric acid, sodium dichromate, water ratio of weight and number are 6:11:86。
A kind of method removing pyrite oxide-film of the present invention, its technique is simple, and by strict process parameter control, the speed that can descale is fast, can reduce part base solid damage, removes more thorough。
The preferred embodiment of the present invention described in detail above。Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work。All technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment。
Claims (4)
1. the method removing pyrite oxide-film, it is characterised in that its technique comprises the following steps:
(1) ungrease treatment, impregnates 10-20min in degreasing agent；
(2) after defat, put in the solution being made up of iron sulfate, concentrated sulphuric acid, water, under ambient temperature, impregnate 10-15min；
(3) put in the solution being made up of sodium dichromate, concentrated sulphuric acid, water, under ambient temperature, impregnate 5-6min；
(4) put in 5-8 DEG C of cold water and wash 5-8min；
(5) immersing 10-15min in Ammonia, distilled water is cleaned, dry at 30-40 DEG C of temperature。
2. a kind of method removing pyrite oxide-film according to claim 1, it is characterized in that: described degreasing agent according to following material with components by weight percent: sodium gluconate 7-8 part, oleic acid triethanolamine amide 6-8 part, enuatrol 10-15 part, water 80-100 part, sodium metasilicate 8-10 part, sodium hydroxide 10-12 part。
3. a kind of method removing pyrite oxide-film according to claim 1, it is characterised in that: the solution of described iron sulfate, concentrated sulphuric acid, water composition；Described iron sulfate, concentrated sulphuric acid, water ratio of weight and number be 4-4.5:3-5:300-350。
4. a kind of method removing pyrite oxide-film according to claim 1, it is characterised in that: the solution of described concentrated sulphuric acid, sodium dichromate, water composition；Described concentrated sulphuric acid, sodium dichromate, water ratio of weight and number are 5-6:10-12:85-90。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410701685.2A CN105696004A (en) | 2014-11-28 | 2014-11-28 | Method for removing brass oxidation film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410701685.2A CN105696004A (en) | 2014-11-28 | 2014-11-28 | Method for removing brass oxidation film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105696004A true CN105696004A (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410701685.2A Pending CN105696004A (en) | 2014-11-28 | 2014-11-28 | Method for removing brass oxidation film |
Country Status (1)
| Country | Link |
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| CN (1) | CN105696004A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528037A (en) * | 2019-10-09 | 2019-12-03 | 柳州市旭平首饰有限公司 | A method of it improving water and plates copper ornament quality |
| CN110541178A (en) * | 2019-09-10 | 2019-12-06 | 柳州市旭平首饰有限公司 | copper decoration brightener and preparation method thereof |
| CN115283309B (en) * | 2022-07-06 | 2024-04-02 | 中船重工龙江广瀚燃气轮机有限公司 | Method for removing residual scale and paint layer on surface of gas turbine casing by chemical method |
-
2014
- 2014-11-28 CN CN201410701685.2A patent/CN105696004A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541178A (en) * | 2019-09-10 | 2019-12-06 | 柳州市旭平首饰有限公司 | copper decoration brightener and preparation method thereof |
| CN110528037A (en) * | 2019-10-09 | 2019-12-03 | 柳州市旭平首饰有限公司 | A method of it improving water and plates copper ornament quality |
| CN115283309B (en) * | 2022-07-06 | 2024-04-02 | 中船重工龙江广瀚燃气轮机有限公司 | Method for removing residual scale and paint layer on surface of gas turbine casing by chemical method |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160622 |