CN102231348A - Method for improving surface roughness of silver coating layer of cylindrical contact terminal of breaker - Google Patents
Method for improving surface roughness of silver coating layer of cylindrical contact terminal of breaker Download PDFInfo
- Publication number
- CN102231348A CN102231348A CN2011101703443A CN201110170344A CN102231348A CN 102231348 A CN102231348 A CN 102231348A CN 2011101703443 A CN2011101703443 A CN 2011101703443A CN 201110170344 A CN201110170344 A CN 201110170344A CN 102231348 A CN102231348 A CN 102231348A
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- China
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- contact
- radially
- roll extrusion
- contact terminal
- silver coating
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Abstract
The invention relates to a method for improving the surface roughness of a silver coating layer of a cylindrical contact terminal of a breaker. The method is characterized by comprising the following steps: firstly, placing a contact terminal on a lathe spindle, and utilizing the lathe spindle to drive the contact terminal to rotate; and propping against the surface of the contact terminal by use of a radial rolling tool, driving a radial rolling tool to feed a certain depth along the radial direction of the contact terminal, and simultaneously, driving the radial rolling tool to move at constant speed along the axial direction of the content terminal so as to achieve the rolling of the silver coating layer on the surface of the contact terminal. The surface of the cylindrical contact terminal is rolled by utilizing the radial rolling tool so as to improve the roughness of the coating layer on the surface of the contact terminal; and simultaneously, the hardness of the coating layer is improved, the service life of the coating layer is prolonged, the surface roughness of the coating layer is improved to less than 0.2mu m from traditional 1.6-3.2 mu m, and the hardness of the coating layer is improved to Vickers hardness (HV) 120-130 from HV70.
Description
Technical field
The present invention relates to a kind of contact of breaker surface treatment method, particularly a kind of method that improves cylindrical contact silver coating surface roughness.
Background technology
Circuit breaker is realized control and protection to electric power system in order to cut off rated current, fault current or conversion line, also can be used as network interconnecting circuit and uses.It comprises that mainly a pair of moving contact and the fixed contact of can be chimeric mutually or separating realize divide-shut brake.Traditional contact, fingertip surface are coated with one deck silver coating, can avoid the corrosion of contact, fingertip.Need to improve its surface roughness after contact surface is silver-plated, traditional method is carried out surface finish, inefficiency by artificial employing scouring pad, hand labor intensity height, contact surface roughness after the polishing between 1.6-3.2 μ m, the surface roughness instability, case hardness is constant.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method that improves cylindrical contact silver coating surface roughness.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of method that improves the cylindrical contact silver coating of circuit breaker surface roughness, and its innovative point is that described step is: at first contact is placed on the lathe spindle, drive contact by lathe spindle and rotate; Adopt radially that the roll extrusion cutter props up contact surface, drive radially the roll extrusion cutter along the contact certain degree of depth of feed radially, driving radially simultaneously, the roll extrusion cutter at the uniform velocity moves axially the roll extrusion that realizes the contact surface silver coating along contact.
Further, the rolling speed of described radially roll extrusion cutter is 60-90m/min.
Further, the radially depth of cut of described radially roll extrusion cutter is 0.2-0.3mm.
Further, the axial feed speed of described radially roll extrusion cutter transfers benchmark to contact revolution one, radially the mobile vertically 0.05-0.15mm of roll extrusion cutter.
The invention has the advantages that: utilizing radially, the roll extrusion cutter carries out roll extrusion to cylindrical contact surface, to improve its overlay coating roughness, simultaneously, can improve the hardness of coating, increase the service life, the coating surface roughness is brought up to less than 0.2 μ m from traditional 1.6-3.2 μ m, and hardness is brought up to HV120-130 from HV70.
Embodiment
Embodiment 1:
At first contact is placed on the lathe spindle, drive contact by lathe spindle and rotate, radially the rolling speed of roll extrusion cutter is 60 m/min;
The radially roll extrusion cutter that mechanical field is common is fixed on the knife rest of lathe, after roll extrusion cutter outer surface props up contact surface, drives radially the roll extrusion cutter along the contact certain degree of depth of feed radially, and this depth of cut is 0.2mm;
Drive roll extrusion cutter radially simultaneously and at the uniform velocity move axially the roll extrusion that realizes the contact surface silver coating along contact, radially the axial feed speed of roll extrusion cutter transfers benchmark to contact revolution one, radially the mobile vertically 0.15mm of roll extrusion cutter;
Contact surface silver coating roughness after the roll extrusion is 0.15 μ m, and case hardness arrives HV123.
Embodiment 2:
At first contact is placed on the lathe spindle, drive contact by lathe spindle and rotate, radially the rolling speed of roll extrusion cutter is 80 m/min;
The radially roll extrusion cutter that mechanical field is common is fixed on the knife rest of lathe, after roll extrusion cutter outer surface props up contact surface, drives radially the roll extrusion cutter along the contact certain degree of depth of feed radially, and this depth of cut is 0.25mm;
Drive roll extrusion cutter radially simultaneously and at the uniform velocity move axially the roll extrusion that realizes the contact surface silver coating along contact, radially the axial feed speed of roll extrusion cutter transfers benchmark to contact revolution one, radially the mobile vertically 0.1mm of roll extrusion cutter;
Contact surface silver coating roughness after the roll extrusion is 0.1 μ m, and case hardness arrives HV124.
Embodiment 3:
At first contact is placed on the lathe spindle, drive contact by lathe spindle and rotate, radially the rolling speed of roll extrusion cutter is 90 m/min;
The radially roll extrusion cutter that mechanical field is common is fixed on the knife rest of lathe, after roll extrusion cutter outer surface props up contact surface, drives radially the roll extrusion cutter along the contact certain degree of depth of feed radially, and this depth of cut is 0.3mm;
Drive roll extrusion cutter radially simultaneously and at the uniform velocity move axially the roll extrusion that realizes the contact surface silver coating along contact, radially the axial feed speed of roll extrusion cutter transfers benchmark to contact revolution one, radially the mobile vertically 0.05mm of roll extrusion cutter;
Contact surface silver coating roughness after the roll extrusion is 0.08 μ m, and case hardness arrives HV130.
Claims (4)
1. method that improves the cylindrical contact silver coating of circuit breaker surface roughness is characterized in that described step is:
A) at first contact is placed on the lathe spindle, drive contact by lathe spindle and rotate;
B) adopt radially that the roll extrusion cutter props up contact surface, drive radially the roll extrusion cutter along the contact certain degree of depth of feed radially, driving radially simultaneously, the roll extrusion cutter at the uniform velocity moves axially the roll extrusion that realizes the contact surface silver coating along contact.
2. the method for the cylindrical contact silver coating of raising circuit breaker according to claim 1 surface roughness, it is characterized in that: the rolling speed of described radially roll extrusion cutter is 60-90m/min.
3. the method for the cylindrical contact silver coating of raising circuit breaker according to claim 1 surface roughness, it is characterized in that: the radially depth of cut of described radially roll extrusion cutter is 0.2-0.3mm.
4. the method for the cylindrical contact silver coating of raising circuit breaker according to claim 1 surface roughness, it is characterized in that: the axial feed speed of described radially roll extrusion cutter transfers benchmark to contact revolution one, radially the mobile vertically 0.05-0.15mm of roll extrusion cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101703443A CN102231348A (en) | 2011-06-23 | 2011-06-23 | Method for improving surface roughness of silver coating layer of cylindrical contact terminal of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101703443A CN102231348A (en) | 2011-06-23 | 2011-06-23 | Method for improving surface roughness of silver coating layer of cylindrical contact terminal of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102231348A true CN102231348A (en) | 2011-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101703443A Pending CN102231348A (en) | 2011-06-23 | 2011-06-23 | Method for improving surface roughness of silver coating layer of cylindrical contact terminal of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102231348A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598481A (en) * | 2017-09-27 | 2018-01-19 | 湖北三环锻造有限公司 | Knuckle axle journal rolling technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030171198A1 (en) * | 2001-03-31 | 2003-09-11 | Siegfried Bagusche | Method for producing a deep rolling roller, and deep rolling roller |
| CN1835165A (en) * | 2006-03-03 | 2006-09-20 | 段沛林 | Prepn. method copper-aluminum composite conductive pole |
| CN1913070A (en) * | 2006-08-26 | 2007-02-14 | 郭建厂 | Vacuum circuit breaker of sealed type outdoor high-tension phase control synchronous permanent magnetic mechanism |
| CN101032794A (en) * | 2006-05-19 | 2007-09-12 | 上海采埃孚伦福德底盘技术有限公司 | Technique of processing ball pin |
| CN101345141A (en) * | 2008-08-25 | 2009-01-14 | 倪树春 | Electrical contact material with Ti3SiC2 three-layer compound structure and preparation technique |
-
2011
- 2011-06-23 CN CN2011101703443A patent/CN102231348A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030171198A1 (en) * | 2001-03-31 | 2003-09-11 | Siegfried Bagusche | Method for producing a deep rolling roller, and deep rolling roller |
| CN1835165A (en) * | 2006-03-03 | 2006-09-20 | 段沛林 | Prepn. method copper-aluminum composite conductive pole |
| CN101032794A (en) * | 2006-05-19 | 2007-09-12 | 上海采埃孚伦福德底盘技术有限公司 | Technique of processing ball pin |
| CN1913070A (en) * | 2006-08-26 | 2007-02-14 | 郭建厂 | Vacuum circuit breaker of sealed type outdoor high-tension phase control synchronous permanent magnetic mechanism |
| CN101345141A (en) * | 2008-08-25 | 2009-01-14 | 倪树春 | Electrical contact material with Ti3SiC2 three-layer compound structure and preparation technique |
Non-Patent Citations (1)
| Title |
|---|
| 徐康友 编译: "《滚压加工》", 31 May 1960, article "《滚压加工》" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598481A (en) * | 2017-09-27 | 2018-01-19 | 湖北三环锻造有限公司 | Knuckle axle journal rolling technology |
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Application publication date: 20111102 |