CN104278307A - Copper plating method of part with waved end surface - Google Patents
Copper plating method of part with waved end surface Download PDFInfo
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- CN104278307A CN104278307A CN201410534572.8A CN201410534572A CN104278307A CN 104278307 A CN104278307 A CN 104278307A CN 201410534572 A CN201410534572 A CN 201410534572A CN 104278307 A CN104278307 A CN 104278307A
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- face
- wax
- copper
- end surface
- copper plating
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Abstract
The invention belongs to the technical field of copper plating processing, and relates to a copper plating method of a part with a waved end surface. The copper plating method particularly comprises the following steps of deoiling before the part is plated, immersing the part in hot water, then blow-drying, placing, and increasing temperature to 60-90 DEG C; heating wax rosin for melting, and treating the end surface for trimming an inclined angle of 45 degrees on the combined part of the wax rosin and the end surface along the periphery of the end surface; grinding the end surface by using a gold-phase sand paper so that no wax rosin residue is positioned on the end surface, and cleaning the end surface by adopting a water aqua; etching the end surface by adopting weak acid, and then placing the part into a copper plating groove; when the copper plating is started, firstly adopting impact current with current intensity 2-3 times higher than that of a single part, and reducing the current intensity to normal current intensity after 1-2 minutes for the copper plating; taking the part out after 180-240 minutes, and carrying out emitted light passivating treatment; carrying out drying treatment on the part by using warm wind and compressed air, and inspecting a copper plating layer of the end surface of the part. The copper plating method disclosed by the invention can effectively prevent the phenomena of copper layer desquamation and crumbling which are generated due to poor bonding force of a base body during the copper plating and can be widely used for the protection of other peculiar parts before plating.
Description
Technical field
The invention belongs to plating copper facing processing technology, relate to a kind of wave end face copper facing part treatment before plating and copper electroplating method.
Background technology
Copper plate is light red or rose-colored, is rich in ductility, soft plastic metal level.Copper plate has small grains structure, has the characteristic that planarization is good, toughness is high, for increasing conductivity and lubricity, thus becomes one of plating main in electroplating industry.General copper-plating technique does not use separately copper as protective coating, the middle layer of other coating of Chang Zuowei, to improve the bonding force of overlay coating and matrix metal.Certain undercarriage framework wave end face copper plate requires that copper facing thickness reaches 50-100 micron; only carry out copper plating treatment at framework wave end face; copper plating treatment is not carried out in other position of part, becomes assembly framework end face copper plate to play antistatic protection and shock absorption with other assembling parts.Because framework end face becomes wavy, before conventional plating, guard method cannot meet frame parts particular requirement, and simultaneously owing to requiring that coating thickeies, treatment before plating improper very easily generation coating comes off and collapses broken phenomenon.
Summary of the invention
The object of the invention: provide a kind of undaform end face copper facing pre-treating process, what before solving plating, the improper leakage copper phenomenon that causes of protection and bonding force difference produced comes off.
Technical solution of the present invention: a kind of copper electroplating method of wave end face part, concrete steps are as follows:
Step 1: plate front inspection to part, carries out thorough oil removing to inside and outside part, cleans specially the carrying out of part end face;
Step 2: part dries up immediately after immersing more than 60 DEG C hot water to put into and is warming up to 60-90 DEG C of baking oven and carries out drying treatment; Take out wave end face part after 30 minutes, cool stand-by;
Step 3: wax pine is heated fusing, when being warmed to 120-150 DEG C, waxdip is carried out to wave end face one end of part, the waxdip degree of depth is 8-10cm, after wax pine cooling condensation, carry out the waxdip of to twice again to increase the thickness of wax pine, until on part wax pine layer thickness reach 4-6mm, guarantee plating time wax pine protection part do not plate part do not reveal copper;
Step 4: remove the wax pine layer on the wave end face of clean part; The oblique angle of 30-60 degree is repaired in residual wax pine layer and the edge that part wave end face is combined;
Step 5: clean the wave end face of part and carry out end face polishing, makes end face not have wax pine residue;
Step 6: oil removal treatment is carried out to the wave end face of part;
Step 7: after adopting the wave end face of mild acid etching part, copper plating groove is put in wave end face one end of part, should ensure that the wave end face of part immerses copper facing tank liquor completely and immersion depth can not exceed the waxdip degree of depth described in step 3;
Step 8: when copper facing starts, according to copper-plating technique requirement, regulates the temperature of copper facing tank liquor, adopts strength of current 2-3 electric current doubly needed for the single wave end face part of plating to carry out impact plating; After one to two minute, strength of current is down to strength of current needed for the single wave end face part of plating to electroplate;
Step 9: according to copper-plating technique requirement, electroplates and takes out part after 180-240 minute, carry out bright dipping Passivation Treatment, removes wax pine after washing is clean with steam;
Step 10: warm braw, compressed air drying process are carried out to part, inspection part wave end face copper plate quality.
Advantage of the present invention: use the front sfgd. of wax pine dip-coating plating; solve when conventional plastic tape protection cannot meet the copper facing of framework special end face and protect the improper dew copper phenomenon caused, effectively prevent the layers of copper produced because basal body binding force is poor during copper facing to come off and collapse broken phenomenon.Protect before can being widely used in the plating of other peculiar part.
Embodiment
Front examination is plated to part, adopts manual oil removing mode solvent to be that 180# aero-washing gasoline carries out thorough oil removing to inside and outside part, especially to the cleaning of part end face.
Dry up immediately to put into after part leaching hot water and be warming up to 60-90 DEG C of baking oven and carry out drying treatment.Take out part after 30 minutes, cool stand-by.
To heat fusing to wax pine, carry out repeatedly waxdip when being warmed to 120-150 DEG C to part, until wax thickness reaches 5mm, when guaranteeing plating, wax pine protection part does not plate part and does not reveal copper.
Process end face, carefully scrape off the wax layer of part wave end face, scrape guarantees that wax layer is removed clean several times repeatedly.45 degree of oblique angles (preventing coating from piling up the overstocked copper plate local that causes collapses crisp) are repaired along end face surrounding wax pine and end face joint portion.
Clean end face with aero-washing gasoline or industrial spirit, to polish end face with abrasive paper for metallograph after waiting gasoline or alcohol volatilization, make end face there is no wax pine residue.
Use industrial cleaning agent to carry out water solvent cleaning to end face, washing is clean, and this step can replace electrolytic degreasing.
After mild acid etching end face, part is put into copper plating groove, notice that tank liquor does not cover the wax pine degree of depth.
First adopt when copper facing starts and be greater than one-piece part strength of current 2-3 rush current doubly.After one to two minute, strength of current is down to normal current intensity and carries out copper facing.
Take out part after 180-240 minute, carry out bright dipping Passivation Treatment, after washing is clean, remove wax pine, recycling with steam.
Compressed air drying process is added to part warm braw, checks part end face copper plate, qualified rear submission inspection.
Claims (1)
1. a copper electroplating method for wave end face part, is characterized in that, concrete steps are as follows:
Step 1: plate front inspection to part, carries out thorough oil removing to inside and outside part, cleans specially the carrying out of part end face;
Step 2: part dries up immediately after immersing more than 60 DEG C hot water to put into and is warming up to 60-90 DEG C of baking oven and carries out drying treatment; Take out wave end face part after 30 minutes, cool stand-by;
Step 3: wax pine is heated fusing, when being warmed to 120-150 DEG C, waxdip is carried out to wave end face one end of part, the waxdip degree of depth is 8-10cm, after wax pine cooling condensation, carry out the waxdip of to twice again to increase the thickness of wax pine, until on part wax pine layer thickness reach 4-6mm, guarantee plating time wax pine protection part do not plate part do not reveal copper;
Step 4: remove the wax pine layer on the wave end face of clean part; The oblique angle of 30-60 degree is repaired in residual wax pine layer and the edge that part wave end face is combined;
Step 5: clean the wave end face of part and carry out end face polishing, makes end face not have wax pine residue;
Step 6: oil removal treatment is carried out to the wave end face of part;
Step 7: after adopting the wave end face of mild acid etching part, copper plating groove is put in wave end face one end of part, should ensure that the wave end face of part immerses copper facing tank liquor completely and immersion depth can not exceed the waxdip degree of depth described in step 3;
Step 8: when copper facing starts, according to copper-plating technique requirement, regulates the temperature of copper facing tank liquor, adopts strength of current 2-3 electric current doubly needed for the single wave end face part of plating to carry out impact plating; After one to two minute, strength of current is down to strength of current needed for the single wave end face part of plating to electroplate;
Step 9: according to copper-plating technique requirement, electroplates and takes out part after 180-240 minute, carry out bright dipping Passivation Treatment, removes wax pine after washing is clean with steam;
Step 10: warm braw, compressed air drying process are carried out to part, inspection part wave end face copper plate quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410534572.8A CN104278307A (en) | 2014-10-11 | 2014-10-11 | Copper plating method of part with waved end surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410534572.8A CN104278307A (en) | 2014-10-11 | 2014-10-11 | Copper plating method of part with waved end surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104278307A true CN104278307A (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410534572.8A Pending CN104278307A (en) | 2014-10-11 | 2014-10-11 | Copper plating method of part with waved end surface |
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| CN (1) | CN104278307A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106929837A (en) * | 2017-03-18 | 2017-07-07 | 大同新成新材料股份有限公司 | A kind of copper electroplating method of carbon draw runner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797022A (en) * | 2012-08-24 | 2012-11-28 | 深圳市常兴技术股份有限公司 | Insulation shielding method in grinding head plating process and coating |
-
2014
- 2014-10-11 CN CN201410534572.8A patent/CN104278307A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797022A (en) * | 2012-08-24 | 2012-11-28 | 深圳市常兴技术股份有限公司 | Insulation shielding method in grinding head plating process and coating |
Non-Patent Citations (3)
| Title |
|---|
| 曹相锋: "浅谈局部电镀的保护", 《ELECTROPLATING &POLLUTION CONTROL 》, vol. 24, no. 1, 31 January 2004 (2004-01-31) * |
| 裘钧: "局部电镀件绝缘工艺及方法初探", 《中国新技术新产品》, no. 13, 31 December 2011 (2011-12-31) * |
| 郑瑞庭: "局部电镀件的绝缘", 《电镀与涂饰》, vol. 21, no. 3, 30 June 2002 (2002-06-30) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106929837A (en) * | 2017-03-18 | 2017-07-07 | 大同新成新材料股份有限公司 | A kind of copper electroplating method of carbon draw runner |
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Application publication date: 20150114 |