CN103160899A - Tinning technology - Google Patents
Tinning technology Download PDFInfo
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- CN103160899A CN103160899A CN 201110423821 CN201110423821A CN103160899A CN 103160899 A CN103160899 A CN 103160899A CN 201110423821 CN201110423821 CN 201110423821 CN 201110423821 A CN201110423821 A CN 201110423821A CN 103160899 A CN103160899 A CN 103160899A
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- Prior art keywords
- tinning
- controlled
- passivation
- tin plating
- degreasing
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Abstract
The invention relates to a tinning technique. The tinning technology is characterized by comprising the following steps: 1, degreasing and de-oiling, 2, acid cleaning, 3, water washing, 4, soft heat, 5, passivation, 6, tinning, namely, immediately placing passivated and cleaned copper clad steel wires into a tinning solution with temperature of 20-40 DEG C, transmission speed controlled within 2-5m/s, and current density controlled within 5-15a/dm2, 7, water washing, 8, drying. The tinning technology is capable of enabling produced products not to be prone to bluing and growing whiskers and to have high quality.
Description
Technical field
The invention belongs to the electroplating chemical technical field, be specifically related to a kind of tin plating technique.
Background technology
The universal demand that has strengthened lead-in wire electron-like element of electronic product, for weldability and the electroconductibility that improves electronic component, leads of electronic component need to carry out zinc-plated processing, but tin plating technique easily causes coating blackout and growth whisker at present, affects quality product and use properties.
Summary of the invention
The object of the present invention is to provide a kind of technique reasonable, the high tin plating technique that is difficult for blackout and growth whisker of the quality product of producing.
The technical solution used in the present invention is:
A kind of tin plating technique, it is characterized in that: comprise the steps, 1, degreasing degreasing, 2, pickling, 3, washing, 4, soft heat, 5, passivation, 6, zinc-plated, the copper clad steel wire that is about to after passivation is cleaned is put into temperature immediately at 20 ℃～40 ℃ tin plating electrolytes, transmission speed is controlled at 2 ~ 5m/s, and current density is controlled at 5～15a/dm
2, 7, washing, 8, drying.
The component of described tin plating electrolyte is tin protochloride 20-50g/L, hydrochloric acid 150-250g/L, Bismuth trinitrate 5-10g/L, complexing agent 120-180g/L, stablizer 50-100g/L, brightening agent 5-15g/L, surplus deionized water.Described complexing agent is: the aqueous solution of hydroxy ethylene diphosphonic acid, citric acid tri potassium, boric acid, stablizer are the aqueous solution of inferior sodium phosphate, polyoxyethylene glycol, and brightening agent is the diluting soln of polyoxyethylene aliphatic alcohol ether and methyl alcohol.
Technique of the present invention is reasonable, high blackout and the growth whisker of being difficult for of the quality product of producing.
Embodiment:
The invention will be further described below in conjunction with embodiment.
Embodiment 1
1, preparation tin plating electrolyte: tin protochloride 25g/L, hydrochloric acid 150g/L, Bismuth trinitrate 5g/L, complexing agent 150g/L, stablizer 60g/L, brightening agent 5g/L, surplus deionized water.Described complexing agent is: the aqueous solution of hydroxy ethylene diphosphonic acid, citric acid tri potassium, boric acid, stablizer are the aqueous solution of inferior sodium phosphate, polyoxyethylene glycol, and brightening agent is the diluting soln of polyoxyethylene aliphatic alcohol ether and methyl alcohol.
2, tin plating technique:
With starting material in turn through 1, degreasing degreasing, it is that 80 ℃ of chemical solventss soak 5 minutes 2, pickling that copper clad steel wire is put into temperature, 3, washing, namely rinse 4, soft heat, 5, passivation with the water that flows, 6, zinc-plated, the copper clad steel wire that is about to after passivation is cleaned is put into temperature immediately at 40 ℃ of tin plating electrolytes, and transmission speed is controlled at 3m/s, and current density is controlled at 5a/dm
2, 7, washing, namely rinse 8, drying with the water that flows.
Claims (1)
1. tin plating technique, it is characterized in that: comprise the steps, (1) degreasing degreasing, (2) pickling, (3) washing, (4) soft heat, (5) passivation, (6) are zinc-plated, and the copper clad steel wire that is about to after passivation is cleaned is put into temperature immediately at 20 ℃～40 ℃ tin plating electrolytes, transmission speed is controlled at 2 ~ 5m/s, and current density is controlled at 5～15a/dm
2, (7) washing, (8) drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110423821 CN103160899A (en) | 2011-12-18 | 2011-12-18 | Tinning technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110423821 CN103160899A (en) | 2011-12-18 | 2011-12-18 | Tinning technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103160899A true CN103160899A (en) | 2013-06-19 |
Family
ID=48584419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110423821 Pending CN103160899A (en) | 2011-12-18 | 2011-12-18 | Tinning technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103160899A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107109651A (en) * | 2014-12-25 | 2017-08-29 | Mec股份有限公司 | The detergent remover on electroless tin plating envelope surface and its forming method of bulking liquor and tin coating |
| CN110004437A (en) * | 2019-04-17 | 2019-07-12 | 惠州华跃科技有限公司 | A kind of tab surfaces of metallic strip processing method |
-
2011
- 2011-12-18 CN CN 201110423821 patent/CN103160899A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107109651A (en) * | 2014-12-25 | 2017-08-29 | Mec股份有限公司 | The detergent remover on electroless tin plating envelope surface and its forming method of bulking liquor and tin coating |
| CN110004437A (en) * | 2019-04-17 | 2019-07-12 | 惠州华跃科技有限公司 | A kind of tab surfaces of metallic strip processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130619 |