CN103184493A - Tin plating method - Google Patents
Tin plating method Download PDFInfo
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- CN103184493A CN103184493A CN 201110458883 CN201110458883A CN103184493A CN 103184493 A CN103184493 A CN 103184493A CN 201110458883 CN201110458883 CN 201110458883 CN 201110458883 A CN201110458883 A CN 201110458883A CN 103184493 A CN103184493 A CN 103184493A
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- Prior art keywords
- tin plating
- washing
- tin
- plating method
- passivation
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- Electroplating And Plating Baths Therefor (AREA)
Abstract
The invention relates to a tin plating process which is characterized by comprising the following steps of 1. removing dust and oil; 2. pickling and phosphating; 3. washing with water; 4. passivating; 5. plating tin, that is, putting a cleaned product processed by passivation in a tin plating solution with a certain temperature, controlling a conveying speed at 1-3 m/s and a current density at 2-5 a/dm<2>; 6. washing with water; and 7. packaging. The tin plating method is reasonable in process, and a product produced by the method has high quality and is not easy to blacken and grow crystal whiskers.
Description
Technical field
The invention belongs to the electroplating chemical technical field, be specifically related to a kind of tin plating method.
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 carry out zinc-plated processing, but tin plating technique causes coating blackout and growth whisker easily at present, influences quality product and use properties.
Summary of the invention
The object of the present invention is to provide a kind of technology reasonable, the high tin plating method 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 method is characterized in that: comprise the steps 1, the dedusting oil removing, 2, acid washing phosphorization, 3, washing, 4, passivation, 5, zinc-plated, the product that is about to after passivation is cleaned is put into temperature at tin plating electrolyte, and transmission speed is controlled at 1 ~ 3m/s, and current density is controlled at 2～5a/dm
2, 6, the washing, 8, the packing.
The component of described tin plating electrolyte is the inferior tin 5～20g/L of hydroxyl methanesulfonic; Ethane sulfonic acid 100～200g/L; Ethylene thiourea 30～100g/L; Formaldehyde 50～100g/L; Polymine polyoxyethylene glycol 0.1～2g/L; Cresol sulfonic acid 0.1～2g/L; Hydroxyl methane sulfonates 20～100g/L; Polyoxyethylene aliphatic alcohol ether 1～3g/L; Surplus distilled water.
Processing method 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: the inferior tin 10g/L of hydroxyl methanesulfonic; Ethane sulfonic acid 150g/L; Ethylene thiourea 50g/L; Formaldehyde 50g/L; Polymine polyoxyethylene glycol 1g/L; Cresol sulfonic acid 1g/L; Hydroxyl methane sulfonates 50g/L; Polyoxyethylene aliphatic alcohol ether 2g/L mixes with surplus distilled water and gets final product.
2, tin plating method:
With starting material in turn through 1, the dedusting oil removing, 2, acid washing phosphorization, 3, washing, 4, passivation, 5, zinc-plated, the product that is about to after passivation is cleaned is put into temperature at tin plating electrolyte, transmission speed is controlled at 1 ~ 3m/s, current density is controlled at 2～5a/dm
2, 6, the washing, 8, the packing.
Claims (1)
1. tin plating method is characterized in that: comprise the steps 1, the dedusting oil removing, 2, acid washing phosphorization, 3, washing, 4, passivation, 5, zinc-plated, the product that is about to after passivation is cleaned is put into temperature at tin plating electrolyte, and transmission speed is controlled at 1 ~ 3m/s, and current density is controlled at 2～5a/dm
2, 6, the washing, 8, the packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110458883 CN103184493A (en) | 2011-12-31 | 2011-12-31 | Tin plating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110458883 CN103184493A (en) | 2011-12-31 | 2011-12-31 | Tin plating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103184493A true CN103184493A (en) | 2013-07-03 |
Family
ID=48675929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110458883 Pending CN103184493A (en) | 2011-12-31 | 2011-12-31 | Tin plating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103184493A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060304A (en) * | 2014-06-13 | 2014-09-24 | 安徽省宁国天成电工有限公司 | Acid tinning electrolyte |
-
2011
- 2011-12-31 CN CN 201110458883 patent/CN103184493A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060304A (en) * | 2014-06-13 | 2014-09-24 | 安徽省宁国天成电工有限公司 | Acid tinning electrolyte |
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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: 20130703 |