CN105441918B - Automobile passivation of copper alloy technique - Google Patents
Automobile passivation of copper alloy technique Download PDFInfo
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- CN105441918B CN105441918B CN201510702084.8A CN201510702084A CN105441918B CN 105441918 B CN105441918 B CN 105441918B CN 201510702084 A CN201510702084 A CN 201510702084A CN 105441918 B CN105441918 B CN 105441918B
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Abstract
The invention discloses automobile passivation of copper alloy technique, it include deoil, the cleaning of multiple clear water, acid adding cleaning, using the Passivation Treatment in secondary different solvents, drying storage.Treated applies not easy to change on auto parts and components for the copper alloy, and corrosion resistance is strong, the technique that surface passivation effect is better than single solvent processing, the solvent used is free from environmental pollution, recyclable recycling, and cost price is cheap, it is short to produce process cycle, there are good market prospects.
Description
Technical field
The present invention relates to alloy treatment technique more particularly to automobile passivation of copper alloy techniques.
Background technology
China Copper and copper alloy processing capacity are annual 10000000 tons or so, and 600,000,000,000 yuan are more than per annual value of production.Generally, machine
It after tool worked copper and copper alloy workpiece, needs to be passivated it processing, to improve its resistance to discoloration and corrosion resistance.At present,
Copper and copper alloy products passivation are mainly cleaned using the treatment fluids such as chromic acid or its mixture, but use these treatment fluids
It carries out containing hexavalent chromium in Cleaning and Passivation treated waste water, the serious body for polluting environment and influencing operating personnel is good for
Health.Therefore, the hexavalent chromium in waste water after being passivated how is eliminated, is the pass that copper and copper alloy surface treatment technology needs solve
Key problem.
Invention content
The object of the present invention is to provide automobile passivation of copper alloy technique, for overcome the deficiencies in the prior art, through peroxidating
After processing, film layer is wear-resisting and corrosion resistance and good.
To solve technical problem described in background technology, the present invention uses following technical scheme：
Automobile passivation of copper alloy technique, it is characterised in that including following operating procedure：
1) it deoils：Organic solvent is carried out to workpiece first, chemical solvent deoils；
2) it cleans：Then flowing Rinsing Area cleaning is put the workpiece in, workpiece is cleaned into 10-15s in Rinsing Area is flowed,
Water temperature is 20-27 degrees Celsius；
3) acid adding is cleaned：It puts the workpiece in the hydrochloric acid of 63-67ml/L and impregnates 3-5s, temperature is 25-27 degrees Celsius；
4) oxidation technology：
The first step is put into oxidation pond one, soaking time 2-5s, and temperature is 15-25 degrees Celsius；
Second step is put into oxidation pond two, soaking time 5-10s, and soaking temperature is 25-45 degrees Celsius；
5) recovery and rinsing：Workpiece after oxidation is put into 20-25 degrees Celsius of flowing Rinsing Area and cleans 10-15s, then
It is put into the flowing hot water storgae that water temperature is 70-95 degrees Celsius and workpiece is cleaned into 10-15s；
6) drying and processing：It puts the workpiece in the baking oven that temperature is 80-98 degrees Celsius and carries out drying and processing；
7) it examines：Copper alloy surface is in semi-glossy shape, surface is not allowed piebald and apparent water mark occur, welding crack is not
Allow unwashed oxide skin occur；
8) it stores：It is put into progress stacking preservation under dry environment.
Preferably, the solution formula in the oxidation pond one is：Potassium bichromate 120-150g/L, sulfuric acid 2.2-3.2ml/
L。
Preferably, the solution formula in the oxidation pond two is：Chromic anhydride 150-200g/L, nitric acid 11-14ml/L, sulfuric acid
5-8ml/L。
Preferably, suitable for the Passivation Treatment of tin-phosphor bronze, the solution formula in the oxidation pond one is：Sodium dichromate
150g/L, sulfuric acid 10ml/L, soaking time 5-10s, temperature are 15-25 degrees Celsius.
The beneficial effects of the invention are as follows：The copper alloy treated apply it is not easy to change on auto parts and components, it is corrosion-resistant
Property it is strong, surface passivation effect be better than single solvent processing technique, the solvent used is free from environmental pollution, recyclable recycling, into
This is cheap, and production process cycle is short, has good market prospects.
Specific embodiment
In order to which those skilled in the art is made to more fully understand technical scheme of the present invention, the present invention will be made into one below
Step is discussed in detail.
In a kind of specific embodiment, automobile passivation of copper alloy technique provided by the invention, it is characterised in that including with
Lower operating procedure：
1) it deoils：Organic solvent is carried out to workpiece first, chemical solvent deoils；
2) it cleans：Then flowing Rinsing Area cleaning is put the workpiece in, workpiece is cleaned into 10s, water in Rinsing Area is flowed
Temperature is 20 degrees Celsius；
3) acid adding is cleaned：It puts the workpiece in the hydrochloric acid of 63ml/L and impregnates 3s, temperature is 25 degrees Celsius；
4) oxidation technology：
The first step is put into oxidation pond one, soaking time 2s, and temperature is 15 degrees Celsius；
Second step is put into oxidation pond two, soaking time 5s, and soaking temperature is 25 degrees Celsius；
5) recovery and rinsing：Workpiece after oxidation is put into 20 degrees Celsius of flowing Rinsing Area and cleans 10s, placed into
Workpiece is cleaned into 10s in the flowing hot water storgae that water temperature is 70 degrees Celsius；
6) drying and processing：It puts the workpiece in the baking oven that temperature is 80 degrees Celsius and carries out drying and processing；
7) it examines：Copper alloy surface is in semi-glossy shape, surface is not allowed piebald and apparent water mark occur, welding crack is not
Allow unwashed oxide skin occur；
8) it stores：It is put into progress stacking preservation under dry environment.
Preferably, the solution formula in the oxidation pond one is：Potassium bichromate 120g/L, sulfuric acid 2.2ml/L.
Preferably, the solution formula in the oxidation pond two is：Chromic anhydride 150g/L, nitric acid 11ml/L, sulfuric acid 5ml/L.
Preferably, suitable for the Passivation Treatment of tin-phosphor bronze, the solution formula in the oxidation pond one is：Sodium dichromate
150g/L, sulfuric acid 10ml/L, soaking time 5s, temperature are 15 degrees Celsius.
Embodiment two
Automobile passivation of copper alloy technique, it is characterised in that including following operating procedure：
1) it deoils：Organic solvent is carried out to workpiece first, chemical solvent deoils；
2) it cleans：Then flowing Rinsing Area cleaning is put the workpiece in, workpiece is cleaned into 15s, water in Rinsing Area is flowed
Temperature is 27 degrees Celsius；
3) acid adding is cleaned：It puts the workpiece in the hydrochloric acid of 67ml/L and impregnates 5s, temperature is 27 degrees Celsius；
4) oxidation technology：
The first step is put into oxidation pond one, soaking time 5s, and temperature is 25 degrees Celsius；
Second step is put into oxidation pond two, soaking time 10s, and soaking temperature is 45 degrees Celsius；
5) recovery and rinsing：Workpiece after oxidation is put into 20-25 degrees Celsius of flowing Rinsing Area and cleans 15s, then put
Enter and workpiece is cleaned into 15s into the flowing hot water storgae that water temperature is 95 degrees Celsius；
6) drying and processing：It puts the workpiece in the baking oven that temperature is 98 degrees Celsius and carries out drying and processing；
7) it examines：Copper alloy surface is in semi-glossy shape, surface is not allowed piebald and apparent water mark occur, welding crack is not
Allow unwashed oxide skin occur；
8) it stores：It is put into progress stacking preservation under dry environment.
Preferably, the solution formula in the oxidation pond one is：Potassium bichromate 150g/L, sulfuric acid 3.2ml/L.
Preferably, the solution formula in the oxidation pond two is：Chromic anhydride 200g/L, nitric acid 14ml/L, sulfuric acid 8ml/L.
Preferably, suitable for the Passivation Treatment of tin-phosphor bronze, the solution formula in the oxidation pond one is：Sodium dichromate
150g/L, sulfuric acid 10ml/L, soaking time 10s, temperature are 25 degrees Celsius.
Embodiment three
Automobile passivation of copper alloy technique, it is characterised in that including following operating procedure：
1) it deoils：Organic solvent is carried out to workpiece first, chemical solvent deoils；
2) it cleans：Then flowing Rinsing Area cleaning is put the workpiece in, workpiece is cleaned into 12s, water in Rinsing Area is flowed
Temperature is 25 degrees Celsius；
3) acid adding is cleaned：It puts the workpiece in the hydrochloric acid of 65ml/L and impregnates 5s, temperature is 25 degrees Celsius；
4) oxidation technology：
The first step is put into oxidation pond one, soaking time 4s, and temperature is 18 degrees Celsius；
Second step is put into oxidation pond two, soaking time 9s, and soaking temperature is 30 degrees Celsius；
5) recovery and rinsing：Workpiece after oxidation is put into 22 degrees Celsius of flowing Rinsing Area and cleans 12s, placed into
Workpiece is cleaned into 12s in the flowing hot water storgae that water temperature is 75 degrees Celsius；
6) drying and processing：It puts the workpiece in the baking oven that temperature is 90 degrees Celsius and carries out drying and processing；
7) it examines：Copper alloy surface is in semi-glossy shape, surface is not allowed piebald and apparent water mark occur, welding crack is not
Allow unwashed oxide skin occur；
8) it stores：It is put into progress stacking preservation under dry environment.
Preferably, the solution formula in the oxidation pond one is：Potassium bichromate 140g/L, sulfuric acid 3.0ml/L.
Preferably, the solution formula in the oxidation pond two is：Chromic anhydride 180g/L, nitric acid 12ml/L, sulfuric acid 7ml/L.
Preferably, suitable for the Passivation Treatment of tin-phosphor bronze, the solution formula in the oxidation pond one is：Sodium dichromate
150g/L, sulfuric acid 10ml/L, soaking time 8s, temperature are 20 degrees Celsius.
Above certain exemplary embodiments that the present invention is only described by way of explanation, undoubtedly, for ability
The those of ordinary skill in domain, without departing from the spirit and scope of the present invention, can be with a variety of different modes to institute
The embodiment of description is modified.Therefore, description is regarded as illustrative in nature, and should not be construed as protecting the claims in the present invention
Protect the limitation of range.
Claims (1)
1. automobile passivation of copper alloy technique, it is characterised in that including following operating procedure：
1）It deoils：Organic solvent is carried out to workpiece first to deoil；
2）Cleaning：Then flowing Rinsing Area cleaning is put the workpiece in, workpiece is cleaned into 10-15s, water temperature in Rinsing Area is flowed
It is 20-27 degrees Celsius；
3）Acid adding is cleaned：It puts the workpiece in the hydrochloric acid of 63-67ml/L and impregnates 3-5s, temperature is 25-27 degrees Celsius；
4）Oxidation technology：
The first step is put into oxidation pond one, and the solution formula in the oxidation pond one is：Potassium bichromate 120-150g/L, sulfuric acid
2.2-3.2ml/L, soaking time 2-5s, temperature are 15-25 degrees Celsius；
Second step is put into oxidation pond two, and the solution formula in the oxidation pond two is：Chromic anhydride 150-200g/L, nitric acid 11-
14ml/L, sulfuric acid 5-8ml/L, soaking time 5-10s, soaking temperature are 25-45 degrees Celsius；
5）Recovery and rinsing：Workpiece after oxidation is put into 20-25 degrees Celsius of flowing Rinsing Area and cleans 10-15s, placed into
Workpiece is cleaned into 10-15s into the flowing hot water storgae that water temperature is 70-95 degrees Celsius；
6）Drying and processing：It puts the workpiece in the baking oven that temperature is 80-98 degrees Celsius and carries out drying and processing；
7) it examines：Copper alloy surface is in semi-glossy shape, and surface is not allowed piebald and apparent water mark occur, and welding crack does not allow
There is unwashed oxide skin；
8）Storage：It is put into progress stacking preservation under dry environment.
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| CN201510702084.8A CN105441918B (en) | 2015-10-26 | 2015-10-26 | Automobile passivation of copper alloy technique |
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| CN201510702084.8A CN105441918B (en) | 2015-10-26 | 2015-10-26 | Automobile passivation of copper alloy technique |
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| CN105441918A CN105441918A (en) | 2016-03-30 |
| CN105441918B true CN105441918B (en) | 2018-06-15 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498383A (en) * | 2016-11-04 | 2017-03-15 | 江西保太有色金属集团有限公司 | A kind of red copper arranges environment-friendly type fastness processing method |
| CN107245733A (en) * | 2017-06-27 | 2017-10-13 | 中国人民解放军第五七九工厂 | A kind of method of the crisp cadmium plating of high-strength steel low hydrogen |
| CN109023330A (en) * | 2018-08-31 | 2018-12-18 | 北京曙光航空电气有限责任公司 | A kind of process of precision copper piece passivation |
| CN112011797A (en) * | 2020-09-24 | 2020-12-01 | 安博科(佛山)金属有限公司 | Corrosion-resistant copper alloy surface treatment method |
| CN116377542A (en) * | 2023-03-29 | 2023-07-04 | 扬州市景杨表面工程有限公司 | Passivation treatment process for new energy automobile workpiece |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4070193A (en) * | 1975-09-19 | 1978-01-24 | Kaddis Mfg. Co. | Corrosion resistant metal sealing formulation |
| CN102321860A (en) * | 2011-09-25 | 2012-01-18 | 宁波市鄞州锡青铜带制品有限公司 | Method for preparing high-performance tin phosphorus bronze band |
| CN102453891A (en) * | 2010-10-18 | 2012-05-16 | 王振宇 | Surface treatment method of copper and copper alloy having strong corrosion resistance |
| CN102679705A (en) * | 2012-05-30 | 2012-09-19 | 中宇建材集团有限公司 | New surface treatment method of copper product |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS648278A (en) * | 1987-06-29 | 1989-01-12 | Mitsui Mining & Smelting Co | Chromate treatment |
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2015
- 2015-10-26 CN CN201510702084.8A patent/CN105441918B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4070193A (en) * | 1975-09-19 | 1978-01-24 | Kaddis Mfg. Co. | Corrosion resistant metal sealing formulation |
| CN102453891A (en) * | 2010-10-18 | 2012-05-16 | 王振宇 | Surface treatment method of copper and copper alloy having strong corrosion resistance |
| CN102321860A (en) * | 2011-09-25 | 2012-01-18 | 宁波市鄞州锡青铜带制品有限公司 | Method for preparing high-performance tin phosphorus bronze band |
| CN102679705A (en) * | 2012-05-30 | 2012-09-19 | 中宇建材集团有限公司 | New surface treatment method of copper product |
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Effective date of registration: 20220516 Address after: 237000 south of Qianjin Road and east of jingsan North Road, Lu'an economic and Technological Development Zone, Anhui Province (in Anhui Bowei Chang'an Electronics Co., Ltd.) Patentee after: Anhui Bowei Chang'an Electronics Co.,Ltd. special purpose vehicle manufacturing branch Address before: 237000 south of Qianjin Road and east of jingsan North Road, Lu'an Economic Development Zone, Anhui Province Patentee before: ANHUI CHANG'AN SPECIAL PURPOSE AUTOMOBILE MANUFACTURING Co.,Ltd. |
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Effective date of registration: 20221116 Address after: 237101 WenWeng Road, economic development zone, Lu'an City, Anhui Province Patentee after: ANHUI BOWEI CHANGAN ELECTRONICS Co.,Ltd. Address before: 237000 south of Qianjin Road and east of jingsan North Road, Lu'an economic and Technological Development Zone, Anhui Province (in Anhui Bowei Chang'an Electronics Co., Ltd.) Patentee before: Anhui Bowei Chang'an Electronics Co.,Ltd. special purpose vehicle manufacturing branch |
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