CN1359769A - Process for manufacturing non-cyanogen electroplated low-tin bronze steel wire for rim - Google Patents
Process for manufacturing non-cyanogen electroplated low-tin bronze steel wire for rim Download PDFInfo
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- CN1359769A CN1359769A CN 00128134 CN00128134A CN1359769A CN 1359769 A CN1359769 A CN 1359769A CN 00128134 CN00128134 CN 00128134 CN 00128134 A CN00128134 A CN 00128134A CN 1359769 A CN1359769 A CN 1359769A
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- steel wire
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- pickling
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Abstract
A technology for preparing steel wire for rime includes drawing, high-temp lead bath annealing, electrolytic pickling, electrolytic alkali washing, non-cyanogen electroplating of low-tin bronze, coating and electrothermal baking, and is characterized by use of proper complexing agent and additive in electroplating for higher stability of tin ions in electroplating liquid. Its advantages are long service life of electroplating liquid, less pollution, low cost and high quality of product.
Description
The invention belongs to the production field of radial tyre bead steel wire, is a kind of production technology of non-cyanogen electroplated low-tin bronze steel wire for rim specifically.
Tempered bead steel wire is the indispensable metallic framework material with radial such as various motor vehicles, aircraft, and first generation product is the red copper plating tempered bead steel wire, and second generation product is a plating low tin bronze tempered bead steel wire.External product is low tin bronze coating more than 95%, and China is the red copper plating product mostly, owing to the resistant to thermal aging performance of the tempered bead steel wire of plating low tin bronze, be better than the red copper plating product with the bonding force of rubber, corrosion resistance etc., so update work is imperative.The production technology of low tin bronze tempered bead steel wire is immersion plating (displacement plating) method at present, and the deficiency of existence is: 1. tank liquor is aging fast, needs to bring in constant renewal in, and constantly discharges waste liquid; 2. use toxicant, pollute more serious; 3. resource utilization is low, and particularly the waste of copper is bigger; 4. plating bath mainly is made up of copper sulphate and stannous sulfate, product coating porous; 5. domestic no maturation process, as introduce an external production line and need spend 1,000,000 dollars of foreign exchanges, one-time investment height.
The object of the present invention is to provide a kind of production technology of non-cyanogen electroplated low-tin bronze steel wire for rim, this technology is carried out cyanideless electro-plating, and environmental pollution is little, and properties of product are superior, invests little.
Technical conceive of the present invention is: use no cyanogen auxiliary material as bath solution, adopt reasonable process conditions and prescription, make electrode potential differ bigger copper tin two metals, in the presence of suitable complexing agent and additive, be subjected to different polarizations, the electrode potential during electro-deposition is approaching mutually, thereby realizes the codeposition of copper tin two metals, coating is combined on the steel wire matrix securely, forms the bronze plating of stanniferous≤3%.
Technical scheme of the present invention comprises unwrapping wire, aligning, lead tempering, it is characterized in that: 1. cathodic pickling: the steel wire after the lead tempering is inserted acid tank, in acid tank, carry out the cathodic pickling of contactless power transformation polarity, to peel off the oxide-film of Steel Wire Surface, the concentration of pickle is sulfuric acid 200 ± 20g/l, 20～40 ℃ of pickling temperatures, electric current 50～100A/ root (adjustable), voltage 8～10V, the steel wire after the pickling remove the acid on surface through washing;
2. electrolytic alkaline cleaning: the steel wire behind the washing disacidify enters the electrolytic alkali washing trough, steel wire is connected the male or female of electrolyte, utilize the polarization of electrode effect, reduce the surface tension at oil solution interface, so that the removing greasy dirt, the technological parameter of this operation is: NaOH 40g/l Na
2CO
340g/l Na
3PO
430g/l, 50～60 ℃ of temperature, electric current 50～100A/ root (adjustable), voltage 6～10v; Again through hot water wash and washing, obtain clean steel wire matrix after the alkali cleaning;
3. electroplate: above-mentioned steel wire matrix is inserted in the electroplating bath electroplate, electroplate liquid comprises potassium pyrophosphate, cupric pyrophosphate, complexing agent D, complexing agent DH
1, additive DS forms P in the electroplate liquid
2O
7 4+180～210g/l, Ca
+ 219～22g/l, ammoniacal liquor 2g/l, effective tin 0.12～0.4g/l, DH
12～4ml/, DS1～2ml/l, D1～2ml/l PH8.8～9.4, its electroplating temperature are 20～40 ℃, signal bronze is separated out jointly in this operation, forms the bronze plating of stanniferous≤3%;
4. answer film: after tempered bead steel wire is electroplated, remove surperficial tank liquor, enter multiple film and handle, adhere to one deck organic film, carry out hot water wash again in Steel Wire Surface through washing, traction, lead-in wire, packing promptly gets product.
Its process route such as figure below:
Unwrapping wire → aligning → lead tempering → washing → cathodic pickling → washing → electrolytic alkaline cleaning → hot water wash → tinning bronze → washing → multiple membranization → oven dry → traction → take-up → packing
In the production technology of tempered bead, steel wire goes out groove from lead pan, the surface is the condition of high temperature, generated thicker oxide-film very soon in air, in production technology of the present invention by cathodic pickling thoroughly to remove passivation film, guarantee the strong bonded of coating and matrix steel wire, strengthen the bonding force of steel bead wire and rubber; Steel wire after the pickling is removed the acid on surface through washing, enter electrolytic alkaline cleaning (being electrochemical degreasing) technology, because polarization of electrode effect, reduce the surface tension at oil solution interface, during electrolysis, hydrogen of being separated out on the electrode or oxygen bubbles have the strong effect of tearing to oil film, can impel oil film to transform rapidly and become tiny oil droplet, mechanical agitation when bubble rises, further strengthen the oil removing process, thereby remove the steel wire greasy dirt that the surface attaches in drawing and acid cleaning process, removed the impurity on coating wire surface, thereby improved the bonding force of steel wire and rubber.Because of tin ion easily reacts with copper ion in tank liquor can not stable existence, complexing agent of the present invention select the stability that has guaranteed tank liquor for use, can make copper ion and tin ion with the firm surface that is combined in steel wire of the ratio of same stable, thereby reach the coating state of copper tin combination.The present invention is the membranization aftertreatment technology again, has strengthened the corrosion resistance of steel wire.
Process stabilizing of the present invention, the every index of product of producing all is higher than international standard, particularly the bonding force with rubber exceeds about 30% than red copper tempered bead steel wire, it is low to have overcome the bonding force that the red copper tempered bead steel wire exists, and heat ageing is poor, problem such as easily blow out, can keeing relative stability property in the high-speed cruising tire, higher with the bonding force of rubber for tire, guaranteed the intensity of tire and the reliability of high-speed cruising, prolonged the service life of tire.
The comparison of product of the present invention and domestic foreign series products technical performance
1. the novelty assessment report that provides according to Hubei Province research institute of scientific-technical information shows, the production of electroless plating low tin bronze tempered steel wire still in the domestic steel wire industry, and being compared as follows of product of the present invention and domestic red copper tempered bead steel wire performance:
| Project name | Product of the present invention | Domestic like product |
| Name of product | Non-cyanogen electroplated low-tin bronze steel wire for rim (Ф 0.96) | Red copper tempered bead steel wire (Ф 0.96) |
| Bonding force (N) | ???????????960-1100 | ?????????800-900 |
| Heat aging performance | Good | Generally |
| Decay resistance | Good | Poor |
2. with the comparison of external like product:
| Project name | Product of the present invention | External like product |
| Name of product | Non-cyanogen electroplated low-tin bronze steel wire for rim | Immersion plating (i.e. displacement plating) low tin bronze tempered bead steel wire |
| Tank liquor life-span and environmental protection | The employing galvanoplastic are produced, substantially there are not other harmful substance, stationary phase long in the tank liquor, electroplate liquid can realize that zero-emission, heavy metals emission amount are small, pollute for a short time, environment protection treating infusion of financial resources is few. | Adopt immersion plating (being displacement method) production, the iron that displaces all enters tank liquor, make the tank liquor composition very unstable, causing plating bath to wear out scraps, need change tank liquor in about 4-6 days, discharge capacity is big, and is seriously polluted, and the environment protection treating difficulty is big.Still have secondary pollution after general the improvement. |
| Quality of coating | Good | Generally |
| Bonding force, N (diameter 1.0) | 960-1100 | 850-900 |
Compared with prior art, the present invention has following advantage: 1. tank liquor long service life, and discharge capacity is minimum; 2. using no cyanogen auxiliary material to make electroplate liquid pollutes little; 3. reduce the wasting of resources; 4. it is little to produce investment; 5. good product performance, bonding force is strong; 6. production cost is low etc.
Embodiment: the steel wire of 6.5 millimeters of diameters is at first passed through broken line, remove the rusty scale and the oxide-film thereof on surface, carry out pickling then, coating lime after further purifying, by rough, is that 6.5 millimeters steel wire is pulled to 2.5 millimeters with diameter, through Overheating Treatment, improve the performance of steel wire.Be coated with boron technology again, reduce steel wire and be pulled to 0.96 millimeter resistance the process from 2.5 millimeters of diameters, obtain diameter and be 0.96 millimeter steel wire, by lead tempering, 390～420 ℃ of temperatures, steel wire after the tempering is inserted acid tank, carry out the cathodic pickling of contactless power transformation polarity in acid tank, pickle concentration is sulfuric acid 200g/l, and pickling temperature is 30 ℃, electric current 100A/ root, voltage 8V; Steel wire behind the washing disacidify enters the electrolytic alkali washing trough, and the male or female of steel wire being connected electrolyte carries out electrolytic alkaline cleaning, and technological parameter is: NaOH 40g/l, Na
2CO
340g/l, Na
3PO
430g/l, 50 ℃ of temperature, electric current 20A/ root (adjustable), voltage 10v; Through hot water wash and washing, obtain clean steel wire matrix again; Above-mentioned steel wire matrix inserted in the electroplating bath electroplate P in the electroplate liquid
2O
7 4+200g/l, Cu
+ 220g/l, ammoniacal liquor 2g/l, effective tin 0.04g/l, DH
12ml/, DS 1ml/l, D1ml/l pH value are 9.0,40 ℃ of electroplating temperatures, the thickness of coating that forms stanniferous≤3% is the bronze plating of 0.10 μ m; Product after the plating is removed the tank liquor on surface through washing, enters multiple film and handles, and adheres to one deck organic film in Steel Wire Surface, gets final product through hot water wash, traction, take-up again.
Claims (1)
- A kind of production technology of non-cyanogen electroplated low-tin bronze steel wire for rim, comprise unwrapping wire, aligning, lead tempering, it is characterized in that: 1. cathodic pickling: the steel wire after the lead tempering is inserted acid tank, carry out the cathodic pickling of contactless power transformation polarity in acid tank, to peel off the oxide-film of Steel Wire Surface, the concentration of pickle is sulfuric acid 200 ± 20g/l, 20～40 ℃ of pickling temperatures, electric current 50～100A/ root, voltage 8～10V, the steel wire after the pickling remove the acid on surface through washing;2. electrolytic alkaline cleaning: the steel wire behind the washing disacidify enters the electrolytic alkali washing trough, steel wire is connected the male or female of electrolyte, utilize the polarization of electrode effect, reduce the surface tension at oil solution interface, so that the removing greasy dirt, the technological parameter of this operation is: NaOH 40g/l Na 2CO 340g/l Na 3PO 430g/l, 50～60 ℃ of temperature, electric current 50～100A/ root (adjustable), voltage 6～10v; Through hot water wash and washing, obtain clean steel wire matrix again;3. electroplate: above-mentioned steel wire matrix is inserted in the electroplating bath electroplate, electroplate liquid comprises potassium pyrophosphate, cupric pyrophosphate, complexing agent D, complexing agent DH 1, additive DS forms P in the electroplate liquid 2O 7 4+180～210g/l, Cu + 219～22g/l, ammoniacal liquor 2g/l, effective tin 0.12～0.4g/l, DH 12～4ml/, DS1～2ml/l, D1～2ml/l PH8.8～9.4, its electroplating temperature are 20～40 ℃, signal bronze is separated out jointly in this operation, forms the bronze plating of stanniferous≤3%;4. answer film: after tempered bead steel wire is electroplated, remove surperficial tank liquor, enter multiple film and handle, adhere to one deck organic film in Steel Wire Surface through washing, again through hot water wash, traction, lead-in wire, packing promptly gets product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00128134 CN1359769A (en) | 2000-12-22 | 2000-12-22 | Process for manufacturing non-cyanogen electroplated low-tin bronze steel wire for rim |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00128134 CN1359769A (en) | 2000-12-22 | 2000-12-22 | Process for manufacturing non-cyanogen electroplated low-tin bronze steel wire for rim |
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|---|---|
| CN1359769A true CN1359769A (en) | 2002-07-24 |
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|---|---|---|---|
| CN 00128134 Pending CN1359769A (en) | 2000-12-22 | 2000-12-22 | Process for manufacturing non-cyanogen electroplated low-tin bronze steel wire for rim |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824612A (en) * | 2010-05-24 | 2010-09-08 | 张家港市胜达钢绳有限公司 | Plating solution suitable for plating high tin bronze coating on bead wire surface in chemical replacement mode |
| CN102319763A (en) * | 2011-07-19 | 2012-01-18 | 江苏胜达科技有限公司 | Processing method of phi 2.10mmHT tempered bead wire |
| CN102517581A (en) * | 2011-12-27 | 2012-06-27 | 山东大业股份有限公司 | High-strength tin-plated bronze tire bead steel wire and preparation method thereof |
| CN102586787A (en) * | 2012-03-27 | 2012-07-18 | 张家港市胜达钢绳有限公司 | Method for producing tin bronze tempering tire bead steel wires highly bonded with rubber |
| CN103805970A (en) * | 2014-01-23 | 2014-05-21 | 江苏兴达钢帘线股份有限公司 | Surface treatment method for tire bead wires before being plated |
| CN110935742A (en) * | 2019-11-25 | 2020-03-31 | 盐城璟盛电线电缆有限公司 | Copper wire drawing process |
| CN114686899A (en) * | 2022-04-08 | 2022-07-01 | 江苏胜达科技有限公司 | All-weather low-rolling-resistance high-strength bead wire for semi-steel radial tire and production process thereof |
-
2000
- 2000-12-22 CN CN 00128134 patent/CN1359769A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824612A (en) * | 2010-05-24 | 2010-09-08 | 张家港市胜达钢绳有限公司 | Plating solution suitable for plating high tin bronze coating on bead wire surface in chemical replacement mode |
| CN101824612B (en) * | 2010-05-24 | 2011-08-17 | 张家港市胜达钢绳有限公司 | Plating solution suitable for plating high tin bronze coating on bead wire surface in chemical replacement mode |
| CN102319763A (en) * | 2011-07-19 | 2012-01-18 | 江苏胜达科技有限公司 | Processing method of phi 2.10mmHT tempered bead wire |
| CN102517581A (en) * | 2011-12-27 | 2012-06-27 | 山东大业股份有限公司 | High-strength tin-plated bronze tire bead steel wire and preparation method thereof |
| CN102586787A (en) * | 2012-03-27 | 2012-07-18 | 张家港市胜达钢绳有限公司 | Method for producing tin bronze tempering tire bead steel wires highly bonded with rubber |
| CN103805970A (en) * | 2014-01-23 | 2014-05-21 | 江苏兴达钢帘线股份有限公司 | Surface treatment method for tire bead wires before being plated |
| CN103805970B (en) * | 2014-01-23 | 2016-04-06 | 江苏兴达钢帘线股份有限公司 | Steel bead wire plating front surface treatment process |
| CN110935742A (en) * | 2019-11-25 | 2020-03-31 | 盐城璟盛电线电缆有限公司 | Copper wire drawing process |
| CN114686899A (en) * | 2022-04-08 | 2022-07-01 | 江苏胜达科技有限公司 | All-weather low-rolling-resistance high-strength bead wire for semi-steel radial tire and production process thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |