CN104388917A - Oxidation protection method for bearing surface - Google Patents
Oxidation protection method for bearing surface Download PDFInfo
- Publication number
- CN104388917A CN104388917A CN201410614084.8A CN201410614084A CN104388917A CN 104388917 A CN104388917 A CN 104388917A CN 201410614084 A CN201410614084 A CN 201410614084A CN 104388917 A CN104388917 A CN 104388917A
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- CN
- China
- Prior art keywords
- bearing
- acidic solution
- protection method
- oxidation protection
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/37—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also hexavalent chromium compounds
- C23C22/38—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also hexavalent chromium compounds containing also phosphates
Abstract
The invention discloses an oxidation protection method for a bearing surface and belongs to the technical field of machine manufacturing. The method comprises the processing steps: (1) preparing an acidic solution; (2) preparing a bearing material; (3) carrying out surface treatment; (4) carrying out oxidation after-treatment; (5) carrying out after-treatment. According to the method, the problem of fatigue failure caused by long-time rolling friction between internal surfaces of the existing bearings and rolling balls is solved; the method has the advantages of simplicity, low cost and easiness in processing.
Description
Technical field
The invention belongs to machinery manufacturing technology field, more particularly, relate to a kind of oxidation treatment method of bearing surface.
Background technology
The main failure forms of engineering materials is surface failure, comprise wearing and tearing, burn into surface damage etc., and general fatigue fracture failure is also from surface.Make the ability inside and outside all with opposing surface failure of material, both add technical difficulty to manufacturing processed, also uneconomical.Under material body keeps original performance, resist it by surface treatment and lost efficacy, there is positive economic implications.
Bearing uses extensively at mechanical field, and the material that bearing mnanufacture is conventional has soft matrix Hard Inclusion bearing metal and the hard soft spot bearing alloy of matrix.For the soft spot bearing alloy of hard matrix, wherein conventional is high tin Z-alloy, wherein containing the aluminium of 79%, the tin of 20% and 1% copper.Because the bearing of hard matrix soft spot bearing alloy manufacture has stronger supporting capacity, and be widely used, but its internal surface is because causing fatigue failure with the long rolling resistance of ball, the process for this reason for its surface is quite important.
Summary of the invention
Cause the problem of fatigue failure because of long-time and ball generation rolling resistance for the internal surface of existing bearing; the invention provides a kind of oxidation protection method of bearing surface; by to bearing inner surface oxide treatment; to obtain hard oxide film; thus improve its wear resistance, delay the generation of the fatigue failure of bearing.
For solving the problem, the present invention adopts following technical scheme.
An oxidation protection method for bearing surface, comprises the following steps:
(1) preparation of acidic solution:
Acidic solution is by phosphoric acid 58-63mL/L, chromic anhydride 40-50 g/L, ammonium bifluoride 4-5 g/L, Secondary ammonium phosphate 3-3.5 g/L, boric acid 1.3-1.6 g/L, and excess water composition;
(2) preparation of bearing materials:
After bearing precision work, clean;
(3) surface treatment:
Bearing is put into acidic solution, and the temperature of acidic solution is 30-36 DEG C, and the treatment time is 3-6min;
(4) oxidative work-up:
Bearing after surface treatment is put into potassium bichromate solution, places 5-9min;
(5) post-processed:
Bearing is taken out from acidic solution, and cleans with clear water, dry.
Preferably, in described step (1), acidic solution by phosphoric acid 60mL/L, chromic anhydride 43g/L, ammonium bifluoride 4.5 g/L, Secondary ammonium phosphate 3.3 g/L, boric acid 1.4 g/L, and excess water composition.
Preferably, in described step (3), the temperature of acidic solution is 34 DEG C, and the treatment time is 4min.
Preferably, in described step (4), putting into the potassium bichromate solution time is 8min.
Compared to prior art, beneficial effect of the present invention is:
(1) the present invention is processed aluminum-based bearing material by the acidic solution of configuration, and utilize potassium bichromate solution to strengthen further after treatment, its surface is made to produce oxide film, and be combined firmly with base aluminum, improve the anticorrosive and wear resisting property on surface, thus delay the generation of the fatigue failure of bearing.
(2) the inventive method is simple, and cost is low, handling ease.
Embodiment
Describe the present invention below in conjunction with embodiment.
embodiment 1
An oxidation protection method for bearing surface, is characterized in that following steps:
(1) preparation of acidic solution:
Acidic solution by phosphoric acid 58mL/L, chromic anhydride 40g/L, ammonium bifluoride 4g/L, Secondary ammonium phosphate 3g/L, boric acid 1.3g/L, and excess water composition;
(2) preparation of bearing materials:
After bearing precision work, clean;
(3) surface treatment:
Bearing is put into acidic solution, and the temperature of acidic solution is 30 DEG C, and the treatment time is 3min;
(4) oxidative work-up:
Bearing after surface treatment is put into potassium bichromate solution, places 5min;
(5) post-processed:
Bearing is taken out from acidic solution, and cleans with clear water, dry.
embodiment 2
An oxidation protection method for bearing surface, is characterized in that following steps:
(1) preparation of acidic solution:
Acidic solution by phosphoric acid 63mL/L, chromic anhydride 50 g/L, ammonium bifluoride 5 g/L, Secondary ammonium phosphate 3.5 g/L, boric acid 1.6 g/L, and excess water composition;
(2) preparation of bearing materials:
After bearing precision work, clean;
(3) surface treatment:
Bearing is put into acidic solution, and the temperature of acidic solution is 36 DEG C, and the treatment time is 6min;
(4) oxidative work-up:
Bearing after surface treatment is put into potassium bichromate solution, places 9min;
(5) post-processed:
Bearing is taken out from acidic solution, and cleans with clear water, dry.
embodiment 3
An oxidation protection method for bearing surface, is characterized in that following steps:
(1) preparation of acidic solution:
Acidic solution by phosphoric acid 60mL/L, chromic anhydride 45g/L, ammonium bifluoride 4.5g/L, Secondary ammonium phosphate 3.3g/L, boric acid 1.5g/L, and excess water composition;
(2) preparation of bearing materials:
After bearing precision work, clean;
(3) surface treatment:
Bearing is put into acidic solution, and the temperature of acidic solution is 34 DEG C, and the treatment time is 5min;
(4) oxidative work-up:
Bearing after surface treatment is put into potassium bichromate solution, places 7min;
(5) post-processed:
Bearing is taken out from acidic solution, and cleans with clear water, dry.
Claims (4)
1. an oxidation protection method for bearing surface, is characterized in that following steps:
(1) preparation of acidic solution:
Acidic solution is by phosphoric acid 58-63mL/L, chromic anhydride 40-50 g/L, ammonium bifluoride 4-5 g/L, Secondary ammonium phosphate 3-3.5 g/L, boric acid 1.3-1.6 g/L, and excess water composition;
(2) preparation of bearing materials:
After bearing precision work, clean;
(3) surface treatment:
Bearing is put into acidic solution, and the temperature of acidic solution is 30-36 DEG C, and the treatment time is 3-6min;
(4) oxidative work-up:
Bearing after surface treatment is put into potassium bichromate solution, places 5-9min;
(5) post-processed:
Bearing is taken out from acidic solution, and cleans with clear water, dry.
2. the oxidation protection method of a kind of bearing surface according to claim 1; it is characterized in that, in described step (1), acidic solution is by phosphoric acid 60mL/L, chromic anhydride 43g/L, ammonium bifluoride 4.5 g/L, Secondary ammonium phosphate 3.3 g/L; boric acid 1.4 g/L, and excess water composition.
3. the oxidation protection method of a kind of bearing surface according to claim 1, is characterized in that, in described step (3), the temperature of acidic solution is 34 DEG C, and the treatment time is 4min.
4. the oxidation protection method of a kind of bearing surface according to claim 1, is characterized in that, in described step (4), putting into the potassium bichromate solution time is 8min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614084.8A CN104388917A (en) | 2014-11-05 | 2014-11-05 | Oxidation protection method for bearing surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614084.8A CN104388917A (en) | 2014-11-05 | 2014-11-05 | Oxidation protection method for bearing surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104388917A true CN104388917A (en) | 2015-03-04 |
Family
ID=52606871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410614084.8A Pending CN104388917A (en) | 2014-11-05 | 2014-11-05 | Oxidation protection method for bearing surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104388917A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047114A (en) * | 1990-04-05 | 1990-11-21 | 青海省新能源研究所 | A kind of chemical oxidation method for aluminium plating film |
| CN1217032A (en) * | 1996-04-26 | 1999-05-19 | 亨凯尔公司 | Chromate passivating and storage stable concentrate solutions thereof |
-
2014
- 2014-11-05 CN CN201410614084.8A patent/CN104388917A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047114A (en) * | 1990-04-05 | 1990-11-21 | 青海省新能源研究所 | A kind of chemical oxidation method for aluminium plating film |
| CN1217032A (en) * | 1996-04-26 | 1999-05-19 | 亨凯尔公司 | Chromate passivating and storage stable concentrate solutions thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈兴娟 等: "《环保型涂料生产工艺及应用》", 30 September 2004, 化学工业出版社 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 605-606 room 35, electronic Pioneer Park, Hengshan Road, Wuhu economic and Technological Development Zone, Anhui 241006, China Applicant after: Wuhu Jinlong Mold Forging Co.,Ltd. Address before: 241006 Anhui Province, Wuhu City Development Zone, Wuyi Road No. 13 (City Industrial Park) Applicant before: Wuhu Jinlong Mold Forging Co.,Ltd. |
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| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150304 |
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| WD01 | Invention patent application deemed withdrawn after publication |