CN104149014A - Tubular electric heating element tumbling technology capable of improving plating quality of tubular electric heating element - Google Patents
Tubular electric heating element tumbling technology capable of improving plating quality of tubular electric heating element Download PDFInfo
- Publication number
- CN104149014A CN104149014A CN201410442410.1A CN201410442410A CN104149014A CN 104149014 A CN104149014 A CN 104149014A CN 201410442410 A CN201410442410 A CN 201410442410A CN 104149014 A CN104149014 A CN 104149014A
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- China
- Prior art keywords
- heating element
- electric heating
- tumbling
- tubular electric
- electrothermal tube
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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
- C23C22/06—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
- C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
-
- 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 a tubular electric heating element tumbling technology. The tubular electric heating element tumbling technology comprises the following steps that A, a tubular electric heating element is soaked in a stainless steel cleaning solution at the temperature of 65 DEG C for 12 minutes firstly, the tubular electric heating element is soaked in a concentrated nitric acid solution for five seconds secondly, the tubular electric heating element is flushed thirdly, and then the surface of the tubular electric heating element is cleaned; B, firstly, tumbling is conducted on the tubular electric heating element which has been handled before tumbling, secondly, the tubular electric heating element obtained after tumbling is soaked in a dilute citric acid solution which is at the temperature of 80 DEG C and has the concentration of 5% for five minutes, and then the tubular electric heating element is flushed; C, passivation treatment and spin-drying are conducted on the tubular electric heating element, wherein when passivation treatment is conducted, the tubular electric heating element is soaked in a dilute nitric acid solution for ten seconds and then are placed in a corrosion inhibition solution to be soaked for 10 seconds, the tubular electric heating element is filtered and washed, and the corrosion inhibition solution comprises potassium iodide, benzotriazole and water at the mass ratio of 0.1:60:100. By the adoption of the tubular electric heating element tumbling technology, welding dirt, spots, stains and rust on the surface of the tubular electric heating element can be effectively removed, and therefore the plating quality of the tubular electric heating element is improved.
Description
The application is divisional application, the application number of original application: 201210481561.9, and 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 processing before carrying out plating.Tumbling processing is bulk of components to be made together with grinding medium in cylinder to low speed rotation, carries out by the relative motion of part and abrasive material the process that light decorations are processed.In tumbling processing procedure, the normal wet method processing grinding medium using contains abrasive material, chemical promoter (brightener) and water.Good tumbling processing can ensure the quality of plating effectively, prevents that metal material is by corrosion.Electrothermal tube is the workpiece of working under hot and humid environment for a long time, and when manufacture, there is weldering dirt metal surface, if tumbling, plating are not totally directly carried out in removing surface, electric heating optical surface very easily gets rusty, once just cannot be used by corrosion.How providing a kind of tumbling treatment process of better effects if to carry out tumbling processing to electrothermal tube, is the problem that those skilled in the art need to solve.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind ofly can effectively 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. electrothermal tube is carried out to tumbling pre-treatment;
The white molten steel solution that electrothermal tube is first 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, then rinses, and effects on surface is cleared up; The white molten steel that described white molten steel solution is is 12% by concentration and clear water form according to the mass ratio configuration of 12 to 16: 100;
B. the electrothermal tube through tumbling pre-treatment is carried out to tumbling processing, 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 soaked 3min to 5min, then rinse;
C. electrothermal tube is carried out Passivation Treatment and dried; When 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 and clean; Described corrosion inhibiting solution is to be formed according to the mass ratio configuration of 0.08 to 0.12: 55 to 65: 100 by KI, BTA and water.
For the tumbling better effects if of electrothermal tube, thereby obtain better anticorrosion effect, a kind of preferred technical scheme is: the tumbling processing in above-mentioned steps B is that electrothermal tube is put into cleaning mill, adds steel ball and clear water that electrothermal tube is covered completely; Before starting, tumbling adds the polishing agent of 160g to 200g and the citric acid powder of 80g to 120g, tumbling 10min to 20min, and tumbling proceeds to a half, again adds the polishing agent of 160g to 200g and the citric acid powder of 80g to 120g.Adding at twice brightener can make the amount of brightener in whole tumbling process is all fully, is conducive to ensure the quality of tumbling.
Later better dry for the Passivation Treatment of electrothermal tube, 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.
For the pickling effect of electrothermal tube before tumbling better, and the better effects if of Passivation Treatment, a kind of preferred technical scheme is: the nitric acid that above-mentioned concentrated nitric acid solution is is 70% by concentration and water configured and form to 35 mass ratio according to 65 to 75: 25; The nitric acid that described dilute nitric acid solution is is 11% by concentration and water form according to the mass ratio configuration of 11 to 15: 100.
The present invention has positive effect: electrothermal tube tumbling treatment process of the present invention carries out pickling de-sludging processing to electrothermal tube before tumbling, successively in white molten steel and red fuming nitric acid (RFNA), soak, can before tumbling, fully remove the weldering dirt on electrothermal tube surface, be conducive to promote the effect of tumbling processing.Electrothermal tube tumbling treatment process of the present invention carries out pickling with rare citric acid solution immediately after tumbling, can make electrothermal tube surface brighter, smooth, further promotes the effect of tumbling processing.Electrothermal tube tumbling treatment process of the present invention, in the time of passivation, successively soaks in dilute nitric acid solution and inhibiting solution, can make the corrosion resistance of electrothermal tube, oxidative resistance greatly improve.Through the electrothermal tube of PROCESS FOR TREATMENT of the present invention, can be smoothly through very much the salt spray test of 48h, there will not be the phenomenon of corrosion, be conducive to promote the quality of electrothermal tube plating, obviously extended the service life of electrothermal tube.
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 50 electrothermal tubes making by welding fabrication technique are first put into 65 DEG C soaks 12min, then puts into concentrated nitric acid solution and soak 5s, then rinse with clear water, and effects on surface is cleared up.After processing, electrothermal tube appearance turns white, and welds dirty available toothbrush and brushes off.
The white molten steel that Bai Gangshui solution is is 12% by concentration and clear water form according to the mass ratio configuration of 14: 100.The composition of Bai Gangshui is the phosphoric acid of 30wt%, the nitric acid of 10wt%, and the hydrochloric acid of 15wt%, all the other are water.The nitric acid that concentrated nitric acid solution is is 70% by concentration and clear water form according to the mass ratio configuration of 70: 30.
B. tumbling is processed and is cleaned:
By putting into cleaning mill through 400 electrothermal tubes of tumbling pre-treatment, add steel ball and clear water that electrothermal tube is covered completely.Before starting, tumbling adds the polishing agent of 180g and the citric acid powder of 100g, tumbling 15min, and tumbling proceeds to a half, again adds the polishing agent of 180g and the citric acid powder of 100g.The citric acid solution that then electrothermal tube after tumbling to be put into temperature and be 80 DEG C, concentration be 5% soaks 5min, then rinses with clear water.After tumbling is processed, electrothermal tube surface-brightening, smooth, is 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:
Soak 10s by putting into dilute nitric acid solution through the electrothermal tube of tumbling processing, then put into corrosion inhibiting solution and soak 10s, then filter and clean with clear water.Then 90 electrothermal tubes that cleaned are put into spin dryer tube, spin dryer tube heating-up temperature is 60 DEG C, dries 10min.
The nitric acid that dilute nitric acid solution is is 11% by concentration and clear water form according to the mass ratio configuration of 13: 100.Corrosion inhibiting solution is to be formed according to the mass ratio configuration of 0.1: 60: 100 by KI, BTA and clear water.
(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 50 electrothermal tubes making by welding fabrication technique are first put into 50 DEG C soaks 6min, then puts into concentrated nitric acid solution and soak 5s, then rinse with clear water, and effects on surface is cleared up.
The white molten steel that Bai Gangshui solution is is 12% by concentration and clear water form according to the mass ratio configuration of 12: 100.The nitric acid that concentrated nitric acid solution is is 70% by concentration and clear water form according to the mass ratio configuration of 65: 35.
B. tumbling is processed and is cleaned:
By putting into cleaning mill through 400 electrothermal tubes of tumbling pre-treatment, add steel ball and clear water that electrothermal tube is covered completely.Before starting, tumbling adds the polishing agent of 160g and the citric acid powder of 80g, tumbling 12min, and tumbling proceeds to a half, again adds the polishing agent of 160g and the citric acid powder of 80g.The citric acid solution that then electrothermal tube after tumbling to be put into temperature and be 100 DEG C, concentration be 5% soaks 3min, then rinses with clear water.
C. passivation and drying:
Soak 8s by putting into dilute nitric acid solution through the electrothermal tube of tumbling processing, then put into corrosion inhibiting solution and soak 8s, then filter and clean with clear water.Then 90 electrothermal tubes that cleaned are put into spin dryer tube, spin dryer tube heating-up temperature is 70 DEG C, dries 5min.
The nitric acid that dilute nitric acid solution is is 11% by concentration and clear water form according to the mass ratio configuration of 11: 100.Corrosion inhibiting solution is to be formed according to the mass ratio configuration of 0.08: 55: 100 by KI, BTA and clear water.
(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 50 electrothermal tubes making by welding fabrication technique are first put into 80 DEG C soaks 8min, then puts into concentrated nitric acid solution and soak 5s, then rinse with clear water, and effects on surface is cleared up.
The white molten steel that Bai Gangshui solution is is 12% by concentration and clear water form according to the mass ratio configuration of 16: 100.The nitric acid that concentrated nitric acid solution is is 70% by concentration and clear water form according to the mass ratio configuration of 75: 25.
B. tumbling is processed and is cleaned:
By putting into cleaning mill through 400 electrothermal tubes of tumbling pre-treatment, add steel ball and clear water that electrothermal tube is covered completely.Before starting, tumbling adds the polishing agent of 200g and the citric acid powder of 120g, tumbling 18min, and tumbling proceeds to a half, again adds the polishing agent of 200g and the citric acid powder of 120g.The citric acid solution that then electrothermal tube after tumbling to be put into temperature and be 90 DEG C, concentration be 5% soaks 4min, then rinses with clear water.
C. passivation and drying:
Soak 12s by putting into dilute nitric acid solution through the electrothermal tube of tumbling processing, then put into corrosion inhibiting solution and soak 12s, then filter and clean with clear water.Then 90 electrothermal tubes that cleaned are put into spin dryer tube, spin dryer tube heating-up temperature is 65 DEG C, dries 8min.
The nitric acid that dilute nitric acid solution is is 11% by concentration and clear water form according to the mass ratio configuration of 15: 100.Corrosion inhibiting solution is to be formed according to the mass ratio configuration of 0.12: 65: 100 by KI, BTA and clear water.
(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, add steel ball and clear water that electrothermal tube is covered completely.And adding the polishing agent of 350g, tumbling 15min, then rinses with clear water.Again electrothermal tube is put into dilute nitric acid solution and soaked 10s and carry out passivation, then dry.
Electrothermal tube to the tumbling treatment process through embodiment 1 to 3 and comparative example 1 carries out respectively salt spray test, and sample is put into salt spray test chamber, adopts 5% NaCl solution, and 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 stainings |
Claims (3)
1. an electrothermal tube treatment process, is characterized in that comprising:
A. electrothermal tube is carried out to tumbling pre-treatment;
The white molten steel solution that electrothermal tube is first put into 80 DEG C soaks 8 min, then puts into concentrated nitric acid solution and soak 5s, then rinses, and effects on surface is cleared up;
B. the electrothermal tube through tumbling pre-treatment is carried out to tumbling processing, rare citric acid solution that then electrothermal tube after tumbling to be put into 90 DEG C, concentration be 5% soaks 4min, then rinses;
C. electrothermal tube is carried out Passivation Treatment and dried; When described Passivation Treatment, first electrothermal tube is put into dilute nitric acid solution and soak 12s, then put into corrosion inhibiting solution and soak 12s, then filter and clean; Described corrosion inhibiting solution is to be formed according to the mass ratio configuration of 0.12: 65: 100 by KI, BTA and water.
2. according to the electrothermal tube treatment process described in claim 1, it is characterized in that: the nitric acid that described concentrated nitric acid solution is is 70% by concentration and water form according to the mass ratio configuration of 75: 25; The nitric acid that described dilute nitric acid solution is is 11% by concentration and water form according to the mass ratio configuration of 11 to 15: 100.
3. 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 |
|---|---|---|---|
| CN201410442410.1A CN104149014A (en) | 2012-11-23 | 2012-11-23 | Tubular electric heating element tumbling technology capable of improving plating quality of tubular electric heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410442410.1A CN104149014A (en) | 2012-11-23 | 2012-11-23 | Tubular electric heating element tumbling technology capable of improving plating quality of tubular electric heating element |
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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| CN104149014A true CN104149014A (en) | 2014-11-19 |
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| CN201410442410.1A Pending CN104149014A (en) | 2012-11-23 | 2012-11-23 | Tubular electric heating element tumbling technology capable of improving plating quality of tubular electric heating element |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000096272A (en) * | 1998-07-24 | 2000-04-04 | Asahi Kagaku Kogyo Co Ltd | Corrosion inhibitor for acid washing of metal, washing solution composition containing same and method for washing metal using same |
| DE10043148A1 (en) * | 2000-08-31 | 2002-03-14 | Volkswagen Ag | Process for increasing the corrosion resistance of a workpiece made of titanium or titanium alloy contaminated with metallic iron comprises treating the workpiece with a pickling solution of concentrated nitric acid in concentrated ethanol |
| CN1912029A (en) * | 2006-09-01 | 2007-02-14 | 北京科技大学 | Preparation method of environmental protection corrosion resistant paint |
| 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 |
| EP2283969A1 (en) * | 2009-07-30 | 2011-02-16 | REM Technologies, Inc. | High throughput finishing of metal components |
| CN102653868A (en) * | 2012-03-14 | 2012-09-05 | 王福平 | Novel stainless steel acid-washing passivation liquid |
-
2012
- 2012-11-23 CN CN201410442410.1A patent/CN104149014A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000096272A (en) * | 1998-07-24 | 2000-04-04 | Asahi Kagaku Kogyo Co Ltd | Corrosion inhibitor for acid washing of metal, washing solution composition containing same and method for washing metal using same |
| DE10043148A1 (en) * | 2000-08-31 | 2002-03-14 | Volkswagen Ag | Process for increasing the corrosion resistance of a workpiece made of titanium or titanium alloy contaminated with metallic iron comprises treating the workpiece with a pickling solution of concentrated nitric acid in concentrated ethanol |
| CN1912029A (en) * | 2006-09-01 | 2007-02-14 | 北京科技大学 | Preparation method of environmental protection corrosion resistant paint |
| 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 |
| EP2283969A1 (en) * | 2009-07-30 | 2011-02-16 | REM Technologies, Inc. | High throughput finishing of metal components |
| CN102653868A (en) * | 2012-03-14 | 2012-09-05 | 王福平 | Novel stainless steel acid-washing passivation liquid |
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Application publication date: 20141119 |