CN104259977A - Electric heating tube roll finish treatment process capable of prolonging service life of electric heating tube - Google Patents
Electric heating tube roll finish treatment process capable of prolonging service life of electric heating tube Download PDFInfo
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- CN104259977A CN104259977A CN201410442453.XA CN201410442453A CN104259977A CN 104259977 A CN104259977 A CN 104259977A CN 201410442453 A CN201410442453 A CN 201410442453A CN 104259977 A CN104259977 A CN 104259977A
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- Prior art keywords
- electric heating
- electrothermal tube
- heating tube
- tumbling
- treatment process
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
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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
- C23C22/68—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 solutions with pH between 6 and 8
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to an electric heating tube roll finish treatment process, in particular to an electric heating tube roll finish treatment process capable of prolonging the service life of an electric heating tube. The electric heating tube roll finish treatment process comprises the following steps that A, the electric heating tube is firstly placed in white molten steel solutions of 65 DEG C to be soaked for 12 minutes, then is placed in concentrated nitric acid solutions to be soaked for five seconds and then is flushed, and the surface of the electric heating tube is cleaned; B, roll finish treatment is carried out on the electric heating tube with roll finish pretreatment carried out, and then the electric heating tube obtained after roll finish is placed in dilute citric acid solutions with the temperature of 80 DEG C and the concentration of five percent to be soaked for five minutes and is flushed; C, passivating treatment is carried out on the electric heating tube, the electric heating tube is spin-dried, during passivating treatment, the electric heating tube is firstly placed in dilute nitric acid solutions to be soaked for 10 seconds, then placed in corrosion inhibition solutions to be soaked for 10 seconds and then filtered and washed, and the corrosion inhibition solutions are formed by potassium iodide, benzotriazole and water according to the mass ratio of 0.1:60:100 in a preparation mode. According to the process, welding dirt, spots, dirt and rust on the surface of the electric heating tube can be cleaned away effectively, and the plating quality of the electric heating tube can be improved to a certain degree.
Description
The application is divisional application, the application number of original application: 201210481561.9, the applying date: 2012-11-23, denomination of invention: electrothermal tube tumbling treatment process.
Technical field
The present invention relates to a kind of chemically treated method in metal surface.
Background technology
Metal material needed first to carry out tumbling process before carrying out plating.Tumbling process is that bulk of components is made low speed rotation together with grinding medium in cylinder, and the process that light adorns process is carried out in the relative motion by part and abrasive material.In tumbling processing procedure, the normal wet method processing grinding medium used contains abrasive material, chemical promoter (brightener) and water.Good tumbling process can ensure the quality of plating effectively, prevents metal material by corrosion.Electrothermal tube is the workpiece worked under hot and humid environment for a long time, and during manufacture, there is weldering dirt metal surface, if removing surface does not totally directly carry out tumbling, plating, electric heating optical surface very easily gets rusty, and just cannot use once by corrosion.How providing a kind of tumbling treatment process of better effects if to carry out tumbling process to electrothermal tube, is the problem that those skilled in the art needs to solve.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind ofly effectively can clear up weldering dirt, spot, the stain on electrothermal tube surface and get rusty, the electrothermal tube tumbling treatment process that the quality of electrothermal tube plating is promoted to some extent.
In order to solve the problems of the technologies described above, the invention provides a kind of electrothermal tube tumbling treatment process, there are following steps:
A. tumbling pre-treatment is carried out to electrothermal tube;
White molten steel solution electrothermal tube first being put into 50 DEG C to 80 DEG C soaks 6min to 12min, then puts into concentrated nitric acid solution and soak 4s to 6s, and then rinse, effects on surface is cleared up; Described white molten steel solution be by concentration be 12% white molten steel and clear water according to 12 to 16: 100 mass ratio configure;
B. tumbling process is carried out to the electrothermal tube through tumbling pre-treatment, then the electrothermal tube after tumbling is put into rare citric acid solution that temperature is more than or equal to 80 DEG C and soak 3min to 5min, then rinse;
C. Passivation Treatment carried out to electrothermal tube and dry; During described Passivation Treatment, first electrothermal tube is put into dilute nitric acid solution and soak 8s to 12s, then put into corrosion inhibiting solution and soak 8s to 12s, then filter cleaning; Described corrosion inhibiting solution be by KI, BTA and water according to 0.08 to 0.12: 55 to 65: 100 mass ratio configure.
In order to the tumbling better effects if of electrothermal tube, thus obtain better anticorrosion effect, a kind of preferred technical scheme is: the tumbling process in above-mentioned steps B is that electrothermal tube is put into cleaning mill, adds steel ball and electrothermal tube covers by clear water completely; Add the polishing agent of 160g to 200g and the citric acid powder of 80g to 120g before tumbling starts, tumbling 10min to 20min, tumbling proceeds to a half, again adds the polishing agent of 160g to 200g and the citric acid powder of 80g to 120g.Adding brightener at twice can make the amount of brightener in whole tumbling processes be all sufficient, is conducive to the quality ensureing tumbling.
In order to the Passivation Treatment of electrothermal tube is later better dry, ensure anticorrosion effect, a kind of preferred technical scheme is: the drying in above-mentioned steps C is that electrothermal tube is put into spin dryer tube, and spin dryer tube heating-up temperature is 60 DEG C to 70 DEG C, dries 5min to 10min.
In order to the pickling effect of electrothermal tube before tumbling is better, and the better effects if of Passivation Treatment, a kind of preferred technical scheme is: above-mentioned concentrated nitric acid solution be by concentration be 70% nitric acid and water according to 65 to 75: 25 to 35 mass ratio configure; Described dilute nitric acid solution be by concentration be 11% nitric acid and water according to 11 to 15: 100 mass ratio configure.
The present invention has positive effect: electrothermal tube tumbling treatment process of the present invention carries out pickling de-sludging process to electrothermal tube before tumbling, successively soak in white molten steel and red fuming nitric acid (RFNA), before tumbling, fully can remove the weldering dirt on electrothermal tube surface, be conducive to the effect promoting tumbling process.Electrothermal tube tumbling treatment process of the present invention carries out pickling with rare citric acid solution immediately after tumbling, and electrothermal tube surface can be made brighter, smooth, promotes the effect of tumbling process further.Electrothermal tube tumbling treatment process of the present invention, when passivation, successively soaks, can make the corrosion resistance of electrothermal tube, oxidative resistance improves greatly in dilute nitric acid solution and inhibiting solution.Through the electrothermal tube of present invention process process, the salt spray test of 48h can be smoothly through very much, there will not be the phenomenon of corrosion, be conducive to the quality promoting electrothermal tube plating, the service life of electrothermal tube is obviously extended.
Detailed description of the invention
(embodiment 1)
The concrete steps of the electrothermal tube tumbling treatment process of the present embodiment are as follows:
A. tumbling pre-treatment:
The white molten steel solution that made by welding fabrication technique 50 electrothermal tubes first put into 65 DEG C is soaked 12min, then puts into concentrated nitric acid solution and soak 5s, then rinse with clear water, and effects on surface is cleared up.After process, electrothermal tube appearance turns white, and welds dirty available toothbrush and brushes off.
Bai Gangshui solution be by concentration be 12% white molten steel and clear water according to 14: 100 mass ratio configure.The composition of Bai Gangshui is the nitric acid of the phosphoric acid of 30wt%, 10wt%, the hydrochloric acid of 15wt%, and all the other are water.Concentrated nitric acid solution be by concentration be 70% nitric acid and clear water according to 70: 30 mass ratio configure.
B. tumbling process and cleaning:
400 electrothermal tubes through tumbling pre-treatment are put into cleaning mill, adds steel ball and electrothermal tube covers by clear water completely.Add the polishing agent of 180g and the citric acid powder of 100g before tumbling starts, tumbling 15min, tumbling proceeds to a half, again adds the polishing agent of 180g and the citric acid powder of 100g.Then the electrothermal tube after tumbling is put into the citric acid solution that temperature is 80 DEG C, concentration is 5% and soak 5min, then rinse with clear water.After tumbling process, electrothermal tube surface-brightening, smooth, to be speckless, stain and getting rusty.The model that polishing agent adopts Xingxing Abrasive Co., Ltd., Huzhou to produce is LGL-5 stainless-steel grinding brightener.
C. passivation and drying:
Electrothermal tube through tumbling process is put into dilute nitric acid solution and soaks 10s, then put into corrosion inhibiting solution and soak 10s, then filter cleaning with clear water.Then cleaned 90 electrothermal tubes are put into spin dryer tube, spin dryer tube heating-up temperature is 60 DEG C, dries 10min.
Dilute nitric acid solution be by concentration be 11% nitric acid and clear water according to 13: 100 mass ratio configure.Corrosion inhibiting solution be by KI, BTA and clear water according to 0.1: 60: 100 mass ratio configure.
(embodiment 2)
The concrete steps of the electrothermal tube tumbling treatment process of the present embodiment are as follows:
A. tumbling pre-treatment:
The white molten steel solution that made by welding fabrication technique 50 electrothermal tubes first put into 50 DEG C is soaked 6min, then puts into concentrated nitric acid solution and soak 5s, then rinse with clear water, and effects on surface is cleared up.
Bai Gangshui solution be by concentration be 12% white molten steel and clear water according to 12: 100 mass ratio configure.Concentrated nitric acid solution be by concentration be 70% nitric acid and clear water according to 65: 35 mass ratio configure.
B. tumbling process and cleaning:
400 electrothermal tubes through tumbling pre-treatment are put into cleaning mill, adds steel ball and electrothermal tube covers by clear water completely.Add the polishing agent of 160g and the citric acid powder of 80g before tumbling starts, tumbling 12min, tumbling proceeds to a half, again adds the polishing agent of 160g and the citric acid powder of 80g.Then the electrothermal tube after tumbling is put into the citric acid solution that temperature is 100 DEG C, concentration is 5% and soak 3min, then rinse with clear water.
C. passivation and drying:
Electrothermal tube through tumbling process is put into dilute nitric acid solution and soaks 8s, then put into corrosion inhibiting solution and soak 8s, then filter cleaning with clear water.Then cleaned 90 electrothermal tubes are put into spin dryer tube, spin dryer tube heating-up temperature is 70 DEG C, dries 5min.
Dilute nitric acid solution be by concentration be 11% nitric acid and clear water according to 11: 100 mass ratio configure.Corrosion inhibiting solution be by KI, BTA and clear water according to 0.08: 55: 100 mass ratio configure.
(embodiment 3)
The concrete steps of the electrothermal tube tumbling treatment process of the present embodiment are as follows:
A. tumbling pre-treatment:
The white molten steel solution that made by welding fabrication technique 50 electrothermal tubes first put into 80 DEG C is soaked 8min, then puts into concentrated nitric acid solution and soak 5s, then rinse with clear water, and effects on surface is cleared up.
Bai Gangshui solution be by concentration be 12% white molten steel and clear water according to 16: 100 mass ratio configure.Concentrated nitric acid solution be by concentration be 70% nitric acid and clear water according to 75: 25 mass ratio configure.
B. tumbling process and cleaning:
400 electrothermal tubes through tumbling pre-treatment are put into cleaning mill, adds steel ball and electrothermal tube covers by clear water completely.Add the polishing agent of 200g and the citric acid powder of 120g before tumbling starts, tumbling 18min, tumbling proceeds to a half, again adds the polishing agent of 200g and the citric acid powder of 120g.Then the electrothermal tube after tumbling is put into the citric acid solution that temperature is 90 DEG C, concentration is 5% and soak 4min, then rinse with clear water.
C. passivation and drying:
Electrothermal tube through tumbling process is put into dilute nitric acid solution and soaks 12s, then put into corrosion inhibiting solution and soak 12s, then filter cleaning with clear water.Then cleaned 90 electrothermal tubes are put into spin dryer tube, spin dryer tube heating-up temperature is 65 DEG C, dries 8min.
Dilute nitric acid solution be by concentration be 11% nitric acid and clear water according to 15: 100 mass ratio configure.Corrosion inhibiting solution be by KI, BTA and clear water according to 0.12: 65: 100 mass ratio configure.
(comparative example 1)
The concrete steps of the electrothermal tube tumbling treatment process of this comparative example are as follows:
Electrothermal tube is put into cleaning mill, adds steel ball and electrothermal tube covers by clear water completely.And add the polishing agent of 350g, tumbling 15min, then rinse with clear water.Again electrothermal tube is put into dilute nitric acid solution to soak 10s and carry out passivation, then dry.
Carry out salt spray test respectively to the electrothermal tube of the tumbling treatment process through embodiment 1 to 3 and comparative example 1, sample is put into salt spray test chamber, adopt the NaCl solution of 5%, humidity is 80%, and temperature is 45 DEG C, continues spraying 24h, 48h and 96h.
Table 1 is the decay resistance table of comparisons of the electrothermal tube of embodiment 1 to 3 and comparative example 1
| The salt spray test time | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 |
| 24h | Without rust staining | Without rust staining | Without rust staining | Without rust staining |
| 48h | Without rust staining | Without rust staining | Without rust staining | A small amount of rust staining |
| 96h | Without rust staining | A small amount of rust staining | Without rust staining | A large amount of rust staining |
Claims (4)
1. an electrothermal tube treatment process, is characterized in that comprising:
A. tumbling pre-treatment is carried out to electrothermal tube;
White molten steel solution electrothermal tube first being put into 50 DEG C soaks 6 min, then puts into concentrated nitric acid solution and soak 5s, and then rinse, effects on surface is cleared up;
B. tumbling adds the polishing agent of 160g and the citric acid powder of 80g, tumbling 12min before starting, and tumbling proceeds to a half, again adds the polishing agent of 160g and the citric acid powder of 80g; Carry out tumbling process to the electrothermal tube through tumbling pre-treatment, the citric acid solution then electrothermal tube after tumbling being put into 100 DEG C soaks 3 min, then rinses;
C. Passivation Treatment carried out to electrothermal tube and dry; During described Passivation Treatment, first electrothermal tube is put into dilute nitric acid solution and soak 8s, then put into corrosion inhibiting solution and soak 8s, then filter cleaning; Described corrosion inhibiting solution be by KI, BTA and water according to 0.08: 55: 100 mass ratio configure.
2. according to the electrothermal tube treatment process described in claim 1, it is characterized in that: the tumbling process in described step B is that electrothermal tube is put into cleaning mill, add steel ball and electrothermal tube covers by water completely.
3. according to the electrothermal tube treatment process described in claim 1, it is characterized in that: the drying in described step C is that electrothermal tube is put into spin dryer tube, spin dryer tube heating-up temperature is 60 DEG C, dries 10min.
4. an electrothermal tube, is characterized in that: this electrothermal tube treatment process according to claim 1 is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410442453.XA CN104259977A (en) | 2012-11-23 | 2012-11-23 | Electric heating tube roll finish treatment process capable of prolonging service life of electric heating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410442453.XA CN104259977A (en) | 2012-11-23 | 2012-11-23 | Electric heating tube roll finish treatment process capable of prolonging service life of electric heating tube |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210481561.9A Division CN102941525B (en) | 2012-11-23 | 2012-11-23 | Electrothermal tube barrel burnishing process |
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| Publication Number | Publication Date |
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| CN104259977A true CN104259977A (en) | 2015-01-07 |
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| CN201410442453.XA Pending CN104259977A (en) | 2012-11-23 | 2012-11-23 | Electric heating tube roll finish treatment process capable of prolonging service life of electric heating tube |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86103910A (en) * | 1986-06-02 | 1987-12-16 | 中国科学院金属腐蚀与防护研究所 | Surface passivation treatment method for copper and copper alloy |
| US5411677A (en) * | 1993-04-26 | 1995-05-02 | The Penn State Research Foundation | Method and composition for preventing copper corrosion |
| CN1229149A (en) * | 1998-03-13 | 1999-09-22 | 董景金 | Treating method for oxide layer on aluminium far-infrared reflector |
| CN101275231A (en) * | 2008-05-27 | 2008-10-01 | 洛阳双瑞金属复合材料有限公司 | Method for spray pickling, polishing and passivating stainless steel composite board and devices thereof |
-
2012
- 2012-11-23 CN CN201410442453.XA patent/CN104259977A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86103910A (en) * | 1986-06-02 | 1987-12-16 | 中国科学院金属腐蚀与防护研究所 | Surface passivation treatment method for copper and copper alloy |
| US5411677A (en) * | 1993-04-26 | 1995-05-02 | The Penn State Research Foundation | Method and composition for preventing copper corrosion |
| CN1229149A (en) * | 1998-03-13 | 1999-09-22 | 董景金 | Treating method for oxide layer on aluminium far-infrared reflector |
| CN101275231A (en) * | 2008-05-27 | 2008-10-01 | 洛阳双瑞金属复合材料有限公司 | Method for spray pickling, polishing and passivating stainless steel composite board and devices thereof |
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Application publication date: 20150107 |
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