CN100464005C - Surface treatment method for silencer internal wall - Google Patents
Surface treatment method for silencer internal wall Download PDFInfo
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- CN100464005C CN100464005C CNB2006100545085A CN200610054508A CN100464005C CN 100464005 C CN100464005 C CN 100464005C CN B2006100545085 A CNB2006100545085 A CN B2006100545085A CN 200610054508 A CN200610054508 A CN 200610054508A CN 100464005 C CN100464005 C CN 100464005C
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Abstract
The invention relates to a surface process method for muffler inner wall. It includes the following steps: taking surface adjusting by manganese phosphate to muffler that has plated decorated chromium and the surface adjusting temperature is 40-60 degree centigrade, taking black phosphorization for 10-15 minutes and the temperature is at 95-100 degree centigrade, taking hot washing at 60-80 degree centigrade, and dipping into water 3-5 times; alkali burning to dry at 80 degree centigrade boiling condition, and drying at over 80 degree centigrade condition. Thus, a layer of phosphorization antisepsis film would be formed on the inner wall of muffler. And the decorated chromium would not pollute the bath. The method has the advantages of high efficiency, simple device and low cost.
Description
Technical field
The present invention relates to a kind of field of metal surface treatment, particularly a kind of method that forms the phosphatize phosphate coat preservative coat on the silencer internal wall surface.
Background technology
When usually sourdine being carried out surface treatment, all be the outside surface decorative chromium plating after, at silencer internal wall coated with high temperature lacquer, or do not do any rotproofing.If silencer internal wall is not done any rotproofing, then silencer internal wall will get rusty fast, make sourdine corrosion from inside to outside, or make the inside weld corrosion, and part comes off, and cause sourdine to produce abnormal sound, the work-ing life of reducing sourdine greatly.And at silencer internal wall coated with high temperature lacquer (hereinafter to be referred as high temperature varnish), though preservative activity is arranged, but the high temperature varnish cost is higher and high temperature varnish requires to being higher than 650 ℃ tailor-made paint. when coated with high temperature coats with lacquer, need outside electroplating assembly line, be equipped with special messenger's operation, increase by 1～3 workman, except that need are equipped with special-purpose spray gun, also need be equipped with 150～250 ℃ the electric oven that solidifies enamelled coating, production cost height not only, efficient is lower, and inwall coated with high temperature lacquer, when coating need be reprocessed or heavily plate, must remove enamelled coating with chemical process, simultaneously when coating is reprocessed or heavily plate, residual enamelled coating and pharmaceutical chemicals can pollute plating bath, often only scrap whole sourdine, so the sourdine of inwall coated with high temperature lacquer can not carry out, and coating is reprocessed or heavily plating.
Summary of the invention
The purpose of this invention is to provide a kind of surface process method for muffler inner wall, it can form one deck phosphatization corrosion prevention film at silencer internal wall, when the sourdine of decorative chromium plating when coating is reprocessed or heavily plate, can not pollute plating bath, and enhance productivity in addition, equipment is simple, the advantage that cost is low.
Realize that technical scheme of the present invention is:
The sourdine of decorative chromium plating is transferred with manganous phosphate table adjustment table, and the temperature that table is transferred is 40～60 ℃, and manganous phosphate table adjustment concentration is 0.8～2 grams per liter;
Carry out black phosphating with distributing bath solution, the temperature of black phosphating is 95 ℃～100 ℃, and the time is 10～15 minutes, and the distributing bath solution strength of solution is 140～160 grams per liters;
Heat is washed in 60 ℃～80 ℃ water, and heat is washed to carry in the process and soaked 3～5 times;
Temperature is under 80 ℃～boiling condition, and alkali scalds to be done;
Dry under the condition more than 80 ℃.
Adopt the inventive method, can form one deck phosphatization corrosion prevention film at the inwall of sourdine, its favorable anti-corrosion effect, and also have following advantage:
1. equipment is simple, and cost is low, is 1/10th of high temperature varnish technology cost.Reason be A. the inventive method used be the general chemical raw material, price is low; B. the production process equipment of the inventive method input is low, and the device just of the inventive method technology increases by 5 on electroplating assembly line
-7 common metal troughs and 1 are lined with the polyvinyl chloride metal trough; C. the inventive method can directly be carried out on electroplating assembly line, need not increase the workman.
2, environmental pollution is little.The main chemical reagent of the inventive method adopts inorganic salt mostly, compares with high temperature varnish, and smell and all less to the harm of human body, and very easily handle.
3, preservative coat more easily takes off and removes. and very easily handle with the anticorrosion rete of phosphatization that this aspect method forms, when the decorative chromium layer need be mended plating or heavily plate, only need to use sulfuric acid, can thoroughly take off except that the phosphatization rete, when mending plating or heavily plating, can not pollute electroplate liquid, can not destroy electrodeposited chromium layers yet.
The present invention is described further below by embodiment. but the present invention is not limited only to these examples.
Embodiment
The product of the same name that distributing bath solution adopts Paccar to produce, main component is the phosphoric acid salt that contains manganese, iron, zinc.
Following chemical reagent adopts the technical pure of commercially available product of the same name or chemical pure all can.
Embodiment 1
Get a sourdine of decorative chromium plating, transfer with manganous phosphate table adjustment table, manganous phosphate table adjustment concentration is 0.8～2 grams per liter, the temperature that table is transferred is 40～60 ℃, time is 20～60 seconds. carry out black phosphating with distributing bath solution, the distributing bath solution strength of solution is 140 grams per liters, and the temperature of black phosphating is 100 ℃, and the time is 15 minutes.With temperature is that 60 ℃～80 ℃ hydro-thermal is washed, and heat is washed in the process sourdine carried in hot water and soaked 3～5 times.Scald in alkaline solution then and do, the time is 1～3 minute.80 ℃～boiling of the temperature of alkaline solution, wherein the concentration of alkaline solution is: yellow soda ash 3～5 grams per liters, industrial soap 3～5 grams per liters.Oven dry, its temperature is more than 80 ℃, and the time is 5～10 minutes. and products obtained therefrom is dissected immediately, observes, and phosphorization membrane is complete, fine and smooth, even, is qualified product.
Embodiment 2
Get a sourdine of decorative chromium plating, transfer with manganous phosphate table adjustment table, manganous phosphate table adjustment concentration is 0.8～2 grams per liter, the temperature that table is transferred is 40～60 ℃, time is 20～60 seconds. carry out black phosphating with distributing bath solution, the distributing bath solution strength of solution is 160 grams per liters, and the temperature of black phosphating is 95 ℃, and the time is 10 minutes.With temperature is that 60 ℃～80 ℃ hydro-thermal is washed, and heat is washed in the process sourdine carried in hot water and soaked 3～5 times.In alkaline solution, scald then and do, time is 1～3 minute, 80 ℃～boiling of the temperature of alkaline solution, wherein the concentration of alkaline solution is: yellow soda ash 3～5 grams per liters, industrial soap 3～5 grams per liters. oven dry, and its temperature is more than 80 ℃, time is 5～10 minutes. products obtained therefrom is dissected immediately, observe, phosphorization membrane is complete, fine and smooth, even, is qualified product.
Embodiment 3
Get a sourdine of decorative chromium plating, transfer with manganous phosphate table adjustment table, manganous phosphate table adjustment concentration is 0.8～2 grams per liter, the temperature that table is transferred is 40～60 ℃, time is 20～60 seconds. carry out black phosphating with distributing bath solution, the distributing bath solution strength of solution is 145 grams per liters, and the temperature of black phosphating is 99 ℃, and the time is 14 minutes.With temperature is that 60 ℃～80 ℃ hydro-thermal is washed, heat is washed in the process sourdine carried in hot water and is soaked 3～5 times. and scald in alkaline solution then and do, the time is 1～3 minute, 80 ℃～boiling of the temperature of alkaline solution, wherein the concentration of alkaline solution is: yellow soda ash 3～5 grams per liters, industry soap 3～5 grams per liters. oven dry, its temperature is more than 80 ℃, and the time is 5～10 minutes. and products obtained therefrom is done experiment of sourdine power loss and discharging experiment, dissect immediately after qualified, observe, inwall is black, non-corroding.
Embodiment 4
Get a sourdine of decorative chromium plating, adjust with the manganous phosphate table and show to transfer, manganous phosphate table adjustment concentration is 0.8～2 grams per liter, and the temperature that table is transferred is 40～60 ℃, and the time is 20～60 seconds.Carry out black phosphating with distributing bath solution, the distributing bath solution strength of solution is 150 grams per liters, and the temperature of black phosphating is 98 ℃, and the time is 13 minutes.With temperature is that 60 ℃～80 ℃ hydro-thermal is washed, heat is washed in the process sourdine carried in hot water and is soaked 3～5 times. and scald in alkaline solution then and do, the time is 1～3 minute, 80 ℃～boiling of the temperature of alkaline solution, wherein the concentration of alkaline solution is: yellow soda ash 3～5 grams per liters, industrial soap 3～5 grams per liters.Oven dry, its temperature is more than 80 ℃, and the time is 5～10 minutes. and products obtained therefrom is dissected immediately, observes, and phosphorization membrane is complete, fine and smooth, even.Sourdine after dissecting is positioned over dark moist vault half a year, observes, phosphorization membrane does not have considerable change, non-corroding.
Embodiment 5
Get a sourdine of decorative chromium plating, adjust with the manganous phosphate table and show to transfer, manganous phosphate table adjustment concentration is 0.8～2 grams per liter, and the temperature that table is transferred is 40～60 ℃, and the time is 20～60 seconds.Carry out black phosphating with distributing bath solution, the distributing bath solution strength of solution is 155 grams per liters, and the temperature of black phosphating is 97 ℃, and the time is 12 minutes.With temperature is that 60 ℃～80 ℃ hydro-thermal is washed, and heat is washed in the process sourdine carried in hot water and soaked 3～5 times.Scald in alkaline solution then and do, the time is 1～3 minute, 80 ℃～boiling of the temperature of alkaline solution, and wherein the concentration of alkaline solution is: yellow soda ash 3～5 grams per liters, industrial soap 3～5 grams per liters.Oven dry, its temperature is more than 80 ℃, and the time is 5～10 minutes. and products obtained therefrom is assembled to after laboratory vehicle runs the examination of 10,000 kilometers roads, anatomic observation, inwall is black, non-corroding.
Embodiment 6
Get a sourdine of decorative chromium plating, adjust with the manganous phosphate table and show to transfer, manganous phosphate table adjustment concentration is 0.8～2 grams per liter, and the temperature that table is transferred is 40～60 ℃, and the time is 20～60 seconds.Carry out black phosphating with distributing bath solution, the distributing bath solution strength of solution is 158 grams per liters, and the temperature of black phosphating is 96 ℃, and the time is 11 minutes.With temperature is that 60 ℃～80 ℃ hydro-thermal is washed, heat is washed in the process sourdine carried in hot water and is soaked 3～5 times. and scald in alkaline solution then and do, the time is 1～3 minute, 80 ℃～boiling of the temperature of alkaline solution, wherein the concentration of alkaline solution is: yellow soda ash 3～5 grams per liters, industrial soap 3～5 grams per liters.Oven dry, its temperature is more than 80 ℃, and the time is 5～10 minutes. and products obtained therefrom is dissected immediately, observes, and the inwall phosphorization membrane is complete, fine and smooth, evenly be qualified product. and another sourdine decorative chromium plating, inwall do not carry out the processing of phosphatization corrosion prevention film.The outside surface decorative chromium layer indistinction of two sourdines.Two sourdines are done Kesternich test-CASS test, are the R8 level, and anatomic observation, inwall have a sourdine of phosphatization corrosion prevention film, and phosphorization membrane is complete, fine and smooth, even, non-corroding; The inwall of another sourdine has red rust.
But the inventive method is done except that alkali scalds when operation → is dried the intermittent operation, and all the other flow processs should operate continuously.
Claims (4)
1. surface process method for muffler inner wall is characterized in that may further comprise the steps:
The sourdine of decorative chromium plating is adjusted with the manganous phosphate table and is shown to transfer, and the temperature that table is transferred is 40～60 ℃;
Carry out black phosphating with distributing bath solution, the temperature of black phosphating is 95 ℃～100 ℃, and the time is 10～15 minutes, and the distributing bath solution strength of solution is 140～160 grams per liters;
Heat is washed in 60 ℃～80 ℃ water, and heat is washed to carry in the process and soaked 3～5 times;
Temperature is under 80 ℃～boiling condition, and alkali scalds to be done;
Dry under the condition more than 80 ℃.
2. surface process method for muffler inner wall according to claim 1 is characterized in that: manganous phosphate table adjustment concentration is 0.8～2 grams per liter, is 20～60 seconds between the table accent.
3. surface process method for muffler inner wall according to claim 1 is characterized in that: it is yellow soda ash 3～5 grams per liters that alkali scalds dried strength of solution, industrial soap 3～5 grams per liters.
4. surface process method for muffler inner wall according to claim 1 is characterized in that: the time of oven dry is 5～10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100545085A CN100464005C (en) | 2006-10-18 | 2006-10-18 | Surface treatment method for silencer internal wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100545085A CN100464005C (en) | 2006-10-18 | 2006-10-18 | Surface treatment method for silencer internal wall |
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| Publication Number | Publication Date |
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| CN1936080A CN1936080A (en) | 2007-03-28 |
| CN100464005C true CN100464005C (en) | 2009-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100545085A Expired - Fee Related CN100464005C (en) | 2006-10-18 | 2006-10-18 | Surface treatment method for silencer internal wall |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094196B (en) * | 2011-03-24 | 2012-07-04 | 上海奉贤钢管厂 | Process for parkerising internal surface of long thin steel tube with manganese phosphate |
| CN106319510B (en) * | 2016-09-20 | 2018-12-18 | 安徽机电职业技术学院 | A kind of iron picture surface anticorrosion trailing and iron picture |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686640A (en) * | 2005-03-28 | 2005-10-26 | 建设工业(集团)有限责任公司 | Black phosphate coating treatment method of power melallugical workpiece |
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2006
- 2006-10-18 CN CNB2006100545085A patent/CN100464005C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686640A (en) * | 2005-03-28 | 2005-10-26 | 建设工业(集团)有限责任公司 | Black phosphate coating treatment method of power melallugical workpiece |
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| CN1936080A (en) | 2007-03-28 |
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Assignee: Chongqing Jianshe Motorcycle Co. Ltd. Assignor: Zhuzhou construction YAMAHA Motorcycle Co., Ltd. Contract record no.: 2010430000136 Denomination of invention: Surface treatment method for silencer internal wall Granted publication date: 20090225 License type: Exclusive License Open date: 20070328 Record date: 20101028 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhuzhou construction YAMAHA Motorcycle Co., Ltd. Assignor: Chongqing Jianshe Motorcycle Co. Ltd. Contract record no.: 2010430000136 Denomination of invention: Surface treatment method for silencer internal wall Granted publication date: 20090225 License type: Exclusive License Open date: 20070328 Record date: 20101028 |
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Effective date of registration: 20151123 Address after: 400054 Banan District, Chongqing building Avenue, No. 2, building 1 Patentee after: CHONGQING CONSTRUCTION ELECTROMECHANICAL CO., LTD. Address before: Zheng Jie 400050 Xiejiawan Jiulongpo District of Chongqing City No. 47 Patentee before: Chongqing Jianshe Motorcycle Co., Ltd. |
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Granted publication date: 20090225 Termination date: 20181018 |
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