CN106637167A - Stainless steel passivation technology - Google Patents
Stainless steel passivation technology Download PDFInfo
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- CN106637167A CN106637167A CN201510710176.0A CN201510710176A CN106637167A CN 106637167 A CN106637167 A CN 106637167A CN 201510710176 A CN201510710176 A CN 201510710176A CN 106637167 A CN106637167 A CN 106637167A
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Abstract
The invention relates to a stainless steel passivation technology. The stainless steel passivation technology comprises the following steps: 1) degreasing: immersing a stainless steel workpiece in an alkaline degreasing solution for 120 min at the temperature of 50 DEG C; 2) washing by deionized water: immersing the workpiece in deionized water for 5 min; 3) sandblasting: performing sand-blast treatment on the surface of the stainless steel workpiece so that the surface roughness Ra of the processed stainless steel workpiece can reach 3.2; 4) washing by deionized water: immersing the workpiece in deionized water for immersion for 5 min; 5) passivating: adjusting the pH value of a passivating solution to 3-4, immersing the workpiece in the passivating solution at normal temperature for 20 min; 6) washing by deionized water: immersing the workpiece in the deionized water for 5 min, cleaning the passivating solution on the surface of the workpiece; and 7) drying: heating the deionized water to the temperature of more than 80 DEG C, placing the passivated workpiece, immersing the workpiece for 8 min and taking the workpiece out, and drying the workpiece in air. The above technical operation increases the corrosion resistance of the stainless steel workpiece and solves the problem of poor fingerprint pollution resistance on the surface of the stainless steel.
Description
Technical field
The present invention relates to a kind of be used for stainless process of surface treatment, specifically a kind of stainless steel passivation process.
Background technology
Stainless steel product is after the operations such as machining, surface can produce substantial amounts of cut, sleek etc., and there is substantial amounts of greasy dirt, iron rust, polishing dust etc. in surface, the stainless steel work-piece of prior art is when being surface-treated, the removal abilities such as cut, the sleek of surface of the work are poor, the anti-finger line poor-performing of surface of the work, and surface corrosion resistance is poor, workpiece surface quality is poor.
The content of the invention
It is an object of the invention to provide a kind of stainless steel passivation process, can improve workpiece gloss degree, remove cut, the sleek of surface of the work, resistance to corrosion is improved.
The technical scheme is that, stainless steel surfaces process is carried out in following processing steps：
1）Degreasing：Stainless steel work-piece is immersed in 10-30 minutes in 40-60 DEG C of alkali degreasing solution；
2）Deionization is washed：Workpiece is soaked in deionized water 3-5 minutes；
3）Sandblasting：Stainless steel work-piece surface is carried out into blasting treatment, makes the stainless steel work-piece surface roughness Ra after process reach 3.2；
4）Deionization is washed：Workpiece is soaked in deionized water 3-5 minutes；
5）Passivation：The pH value of adjustment passivating solution is at normal temperatures immersed in workpiece in passivating solution to 3-4, and soak time is 15-25 minutes；
6）Deionization is washed：Workpiece is soaked in deionized water 3-5 minutes, the passivating solution of surface of the work is cleaned up；
7）It is dried：Deionized water is heated into more than 80 DEG C, the workpiece after passivation is put into, taken out after immersion 6-8 minutes, dried.
Preferential, step 1）In, described degreaser is the alkali degreasing solution of the NaOH containing 3.5wt%-5wt%, sodium carbonate.
Preferential, step 3）In, described sandblasting is 60# glass sands, and under being 7.5GK in injection air pressure surface of the work is ejected into.
Preferential, step 5）In, described passivating solution is containing 350-500g/l, the solution of sodium dichromate 20-30g/l.
The invention has the beneficial effects as follows, through the stainless steel passivation process of patent of the present invention, cut, the sleek on stainless steel work-piece surface are eliminated, it is ensured that the dicoration of stainless steel work-piece, the corrosion resistance of stainless steel work-piece is improve, solves the problems, such as that the anti-hand fingerprint pollution of stainless steel surfaces is poor.
Specific embodiment
The present invention is carried out according to following processing step：
1）Degreasing：Stainless steel work-piece is immersed in 120 minutes in 50 DEG C of alkali degreasing solution；
2）Deionization is washed：Workpiece is soaked in deionized water 5 minutes；
3）Sandblasting：Stainless steel work-piece surface is carried out into blasting treatment, makes the stainless steel work-piece surface roughness Ra after process reach 3.2；
4）Deionization is washed：Workpiece is soaked in deionized water 5 minutes；
5）Passivation：The pH value of adjustment passivating solution is at normal temperatures immersed in workpiece in passivating solution to 3-4, and soak time is 20 minutes；
6）Deionization is washed：Workpiece is soaked in deionized water 5 minutes, the passivating solution of surface of the work is cleaned up；
7）It is dried：Deionized water is heated into more than 80 DEG C, the workpiece after passivation is put into, immersion is taken out after 8 minutes, is dried.
The present invention is operated by process above, improves the corrosion resistance of stainless steel work-piece, solves the problems, such as that the anti-hand fingerprint pollution of stainless steel surfaces is poor.
It should be noted that, above example is only to illustrate technical scheme and unrestricted, although being described in detail to the present invention with reference to above-described embodiment, still technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention, all should cover in the middle of scope of the presently claimed invention.
Claims (1)
1. a kind of stainless steel passivation process, it is characterised in that carry out in following processing steps：
1）Degreasing：Stainless steel work-piece is immersed in 10-30 minutes in 40-60 DEG C of alkali degreasing solution；
2）Deionization is washed：Workpiece is soaked in deionized water 3-5 minutes；
3）Sandblasting：Stainless steel work-piece surface is carried out into blasting treatment, makes the stainless steel work-piece surface roughness Ra after process reach 3.2；
4）Deionization is washed：Workpiece is soaked in deionized water 3-5 minutes；
5）Passivation：The pH value of adjustment passivating solution is at normal temperatures immersed in workpiece in passivating solution to 3-4, and soak time is 15-25 minutes；
6）Deionization is washed：Workpiece is soaked in deionized water 3-5 minutes, the passivating solution of surface of the work is cleaned up；
7）It is dried：Deionized water is heated into more than 80 DEG C, the workpiece after passivation is put into, taken out after immersion 6-8 minutes, dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510710176.0A CN106637167A (en) | 2015-10-28 | 2015-10-28 | Stainless steel passivation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510710176.0A CN106637167A (en) | 2015-10-28 | 2015-10-28 | Stainless steel passivation technology |
Publications (1)
| Publication Number | Publication Date |
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| CN106637167A true CN106637167A (en) | 2017-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510710176.0A Pending CN106637167A (en) | 2015-10-28 | 2015-10-28 | Stainless steel passivation technology |
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| CN (1) | CN106637167A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676533A (en) * | 2018-12-29 | 2019-04-26 | 深圳仕上电子科技有限公司 | The surface treatment method of metal works |
| CN110760834A (en) * | 2019-12-04 | 2020-02-07 | 嘉善永金金属制品有限公司 | Metal part surface treatment process |
| TWI689632B (en) * | 2018-10-22 | 2020-04-01 | 國立中興大學 | Method for the layered double hydroxide growing on the surface of stainless steel |
| CN111733409A (en) * | 2020-06-04 | 2020-10-02 | 太仓托普斯特金属制品有限公司 | Vitrification process of automobile parts made of carbon steel material |
| CN113373455A (en) * | 2021-06-19 | 2021-09-10 | 贵州航箭电子产品有限公司 | Surface polishing process for high-temperature packaged electronic component |
-
2015
- 2015-10-28 CN CN201510710176.0A patent/CN106637167A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI689632B (en) * | 2018-10-22 | 2020-04-01 | 國立中興大學 | Method for the layered double hydroxide growing on the surface of stainless steel |
| CN109676533A (en) * | 2018-12-29 | 2019-04-26 | 深圳仕上电子科技有限公司 | The surface treatment method of metal works |
| CN110760834A (en) * | 2019-12-04 | 2020-02-07 | 嘉善永金金属制品有限公司 | Metal part surface treatment process |
| CN111733409A (en) * | 2020-06-04 | 2020-10-02 | 太仓托普斯特金属制品有限公司 | Vitrification process of automobile parts made of carbon steel material |
| CN113373455A (en) * | 2021-06-19 | 2021-09-10 | 贵州航箭电子产品有限公司 | Surface polishing process for high-temperature packaged electronic component |
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Application publication date: 20170510 |