CN102330129B - Tin plating process of aluminum base bearing bush - Google Patents
Tin plating process of aluminum base bearing bush Download PDFInfo
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- CN102330129B CN102330129B CN201110266465.8A CN201110266465A CN102330129B CN 102330129 B CN102330129 B CN 102330129B CN 201110266465 A CN201110266465 A CN 201110266465A CN 102330129 B CN102330129 B CN 102330129B
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- tin plating
- washing
- film forming
- oil removing
- caustic solution
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Abstract
The invention discloses a kind of tin plating process of aluminum base bearing bush, comprise the steps of A, pickling；B, washing；C, oil removing film forming: boiled by weak caustic solution, boil workpiece 5～10 minutes in the weak caustic solution boiled, to surface of the work brilliant white or micro-Huang；D, washing；E, tin plating；F, washing；G, dry；H, drying.Traditional handicraft is adjusted by the present invention, the method using oil removing film forming before tin plating, one layer of closing membrane is defined at surface of the work, in ensuing plating, utilize the principle of potential difference, inner surface the most whether go up stannum, and outer surface steel layer electroplating quality also significantly improves, and has accomplished oil removing film forming one-time-reach-place simultaneously.The present invention compared with the prior art, can be greatly saved the non-ferrous metal stannum that country is valuable, increase economic efficiency simultaneously.
Description
Technical field
The invention belongs to electroplating technology field, particularly to a kind of tin plating process of aluminum base bearing bush.
Background technology
The material of aluminum standard shaft watt is composite, deciliter layer gold and steel layer, and including alloy-layer, steel layer is outside.Alloy-layer
Being mainly composed of: stannum 18.5～22.5%, copper 0.8～1.2%, the trace element such as ferrum, manganese, zinc, remaining is aluminum；Steel layer is No. 08
Steel.Two kinds of different metals, its characteristic also has bigger difference, and aluminum is active metal, poor stability, and ferrum is the most stable, specifically
It is reacted in plating aspect, as electrical conductivity, electrode potential all differ greatly.The effect that aluminum standard shaft watt is tin plating, the most antirust and
Decoration, traditional technological process is: 1, oil removing；2, washing；3, pickling；4, washing；5, tin plating；6, washing；7, dry；8, dry
Dry；The most tin plating is the plating of common sulfate light.The advantage of traditional handicraft is that deposition velocity is fast, and current efficiency is high；Shortcoming is axle
Watt surfaces externally and internally plates last layer stannum together, and the one of inner surface layer of stannum to be caused greatly by boring during polish
Waste, cost is high.
Summary of the invention
The tin plating process of aluminum base bearing bush that the technical issues that need to address of the present invention are traditional makes bearing shell surfaces externally and internally one plating
Last layer stannum, and the one of inner surface layer of stannum to be caused waste greatly by boring during polish, cost is high.
For solving above-mentioned technical problem, the invention provides a kind of tin plating process of aluminum base bearing bush, comprise the steps of
A, pickling；
B, washing；
C, oil removing film forming: boiled by weak caustic solution, boil workpiece 5～10 minutes, to workpiece in the weak caustic solution boiled
Surface brilliant white or micro-Huang；
D, washing；
E, tin plating；
F, washing；
G, dry；
H, drying.
As optimal technical scheme, the weak caustic solution of the present invention is the solution containing 10%～15%NaOH.
Traditional handicraft is adjusted by the present invention, and the method using oil removing film forming before tin plating, in surface of the work shape
Become one layer of closing membrane, in ensuing plating, utilize the principle of potential difference, inner surface the most whether go up stannum, and outer surface
Steel layer electroplating quality also significantly improves, and has accomplished oil removing film forming one-time-reach-place simultaneously.The present invention compared with the prior art, can be significantly
Save the non-ferrous metal stannum that country is valuable, increase economic efficiency simultaneously.
Detailed description of the invention
The invention provides a kind of tin plating process of aluminum base bearing bush, comprise the steps of
A, pickling；
B, washing；
C, oil removing film forming: boiled by weak caustic solution, boil workpiece 5～10 minutes, to workpiece in the weak caustic solution boiled
Surface brilliant white or micro-Huang；
D, washing；
E, tin plating；
F, washing；
G, dry；
H, drying.
Wherein weak caustic solution is the solution containing 10%～15%NaOH, and tin plating is the plating of common sulfate light.
With weak caustic solution (NaOH containing 10%～15%) in the case of temperature boiling point, workpiece is allowed to boil 5～10 minutes,
Time depending on the concentration of solution, to bearing shell surface brilliant white or slightly yellow.Material is thus formed one layer of closing membrane, connecing
In the plating got off, utilize the principle of potential difference, inner surface the most whether go up stannum, and outer surface steel layer electroplating quality the most substantially carries
Height, has accomplished oil removing film forming one-time-reach-place simultaneously, has killed two birds with one stone.
This technique can be greatly saved the non-ferrous metal stannum that country is valuable, increases economic efficiency simultaneously.
Claims (1)
1. a tin plating process of aluminum base bearing bush, it is characterised in that: comprise the steps of
A, pickling；
B, washing；
C, oil removing film forming: boiled by weak caustic solution, boil workpiece 5～10 minutes, to surface of the work in the weak caustic solution boiled
Brilliant white or micro-Huang, described weak caustic solution is the solution containing 10%～15%NaOH；
D, washing；
E, tin plating；
F, washing；
G, dry；
H, drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110266465.8A CN102330129B (en) | 2011-09-09 | 2011-09-09 | Tin plating process of aluminum base bearing bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110266465.8A CN102330129B (en) | 2011-09-09 | 2011-09-09 | Tin plating process of aluminum base bearing bush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102330129A CN102330129A (en) | 2012-01-25 |
| CN102330129B true CN102330129B (en) | 2016-08-10 |
Family
ID=45482087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110266465.8A Active CN102330129B (en) | 2011-09-09 | 2011-09-09 | Tin plating process of aluminum base bearing bush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102330129B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108103515A (en) * | 2017-12-25 | 2018-06-01 | 横琴国际知识产权交易中心有限公司 | A kind of processing method of aluminium alloy |
| CN108677226A (en) * | 2018-06-26 | 2018-10-19 | 重庆红江机械有限责任公司 | A kind of method of high tin aluminium base bearing shell plating matte tin |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09272988A (en) * | 1996-04-05 | 1997-10-21 | Sankyo Seiki Mfg Co Ltd | Method for plating aluminum die-cast body |
| CN101503811A (en) * | 2009-02-04 | 2009-08-12 | 嘉应学院 | Method for electroplating shaft bushing antifriction layer by metilsulfate plating bath |
-
2011
- 2011-09-09 CN CN201110266465.8A patent/CN102330129B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09272988A (en) * | 1996-04-05 | 1997-10-21 | Sankyo Seiki Mfg Co Ltd | Method for plating aluminum die-cast body |
| CN101503811A (en) * | 2009-02-04 | 2009-08-12 | 嘉应学院 | Method for electroplating shaft bushing antifriction layer by metilsulfate plating bath |
Non-Patent Citations (3)
| Title |
|---|
| 如何提高不锈钢轴瓦镀锡质量;陈冬石 等;《材料保护》;19960530;第29卷(第5期);第34页 * |
| 汽轮机轴瓦背的电镀镀锡;代友成 等;《铸造技术》;19961231;第30-31页 * |
| 轴瓦三元合金电镀工艺及挂具的研究;王会文 等;《内燃机配件》;19930402(第1期);第1-7页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102330129A (en) | 2012-01-25 |
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