CN104400312B - A kind of inefficacy AgSnO2The restorative procedure of the surface failure of contact material - Google Patents
A kind of inefficacy AgSnO2The restorative procedure of the surface failure of contact material Download PDFInfo
- Publication number
- CN104400312B CN104400312B CN201410634204.0A CN201410634204A CN104400312B CN 104400312 B CN104400312 B CN 104400312B CN 201410634204 A CN201410634204 A CN 201410634204A CN 104400312 B CN104400312 B CN 104400312B
- Authority
- CN
- China
- Prior art keywords
- contact material
- agsno
- inefficacy
- pulse laser
- restorative procedure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Contacts (AREA)
- Manufacture Of Switches (AREA)
Abstract
This patent relate to a kind of inefficacy AgSnO2The restorative procedure of the surface failure of contact material, belongs to material surface modifying technology field; For AgSnO2Contact material is on active service after using and lost efficacy is concentrated mainly on alloy surface 20-100 ��m, and the top layer Ag content after inefficacy reduces, and presents SnO2Situation about reuniting adopts the method that pulse laser carries out remelting reparation; Adopt coating process or electrodeposition process or dip coating etc. to be coated with the pure Ag layer of 20-40 ��m on the contact material surface lost efficacy, then adopt argon as protective gas, utilize pulse laser to inefficacy AgSnO in pulse laser operating room2Contact material surface carries out remelting; Finally, by the AgSnO after reparation2Surface adopts machining smooth. The AgSnO that the present invention repairs2Contact material properties of product are stable, simple to operate, form the remelted layer that crystal grain is tiny on surface, and the performance such as the microhardness on contact material top layer and wearability is greatly improved, and can realize the reparation of batch.
Description
Technical field
The present invention relates to a kind of inefficacy AgSnO2The process of contact material surface reconditioning, the method is by adopting pulse laser at the AgSnO lost efficacy2Contact material surface forms the remelted layer that crystal grain is tiny, belongs to technical field of material surface treatment.
Background technology
AgCdO is widely used for as contact material in mesolow electrical equipment using excellent electric property for a long time, but is replaced by other material gradually owing to it does not meet environmental requirement. AgSnO2It is by Ag and SnO2For a kind of metal-base composites that main component is made, it it is the first-selected environmental protection contact material substituting poisonous AgCdO in current low-voltage electrical apparatus. Current AgSnO2 contact material is prepared mainly through powder technology. Mainly include powder pressing forming, sintering increases intensity and multiple pressure is to improve density further. Often it is also performed to extruded to improve bond strength between consistency and different constituent element further. Extrusion ingot can be made required variously-shaped then through wire drawing, rolling, swaged forging etc. AgSnO2Contact material has excellent resistance fusion welding and an anti electric arc corrosion performance, but topmost one drawback is that machining property is poor, it is impossible to meet the requirement of miniaturization switch day by day; Another major drawback is that in use procedure, contact resistance is too high, reduces the reliability of electrical contact. Therefore add trace meter oxide (such as rare earth oxide etc.) and become preparation and research AgSnO2The main flow of contact material. As Xie Ming etc. has invented the preparation method (ZL200410079614.X) of a kind of silver-tin oxide electrical contact material; Wang Jun suddenly waits by adopting plasma spraying method to be prepared for nano combined AgSnO at copper-based surfaces2Contact material (ZL200810231645.0) and employing high-energy ball milling method prepare ultra-fine miserable assorted AgSnO2Contact material (publication No.: CN103276235A); Huang Xiwen etc. disclose a kind of AgSnO2The preparation method (publication No.: CN103639232A) of wire rod;Face Xiao Fang etc. by techniques such as drawing, heat treatments, repeatedly extruding, jumping-up to AgSnO2The crystal grain of contact material has refined. Therefore, AgSnO2Contact material in use lost efficacy, and the surface mainly due to contact material takes the lead in losing efficacy and causes whole inefficacy. Trace it to its cause, mainly due to AgSnO2Often it is enriched with SnO on top layer after contact material a period of time under arms2So that it is resistance fusion welding can improve but also raise along with contact resistance. SnO2Reunion degree and size to controlling final microscopic structure and SnO2Granule distribution in Ag matrix is extremely important, therefore AgSnO2The microscopic structure on surface and performance seem and are even more important.
Pulse laser process for treating surface is that the laser beam of high-energy-density is bombarded material surface, and adopt the mode of high-velocity scanning, make the thin layer of material surface and matrix rapid melting simultaneously, mix, form the surface melting layer that thickness is 10-1000 ��m, surface melting layer rapid solidification again, thus improving nucleation rate inhibiting grain growth can obtain, at material surface, the tissue that crystal grain is tiny. Pulse laser process for treating surface is well applied in machinery manufacturing industry, as on gas turbine blades, on mould and various instrument carry out surface peening, reach to improve the performances such as it is heat-resisting, anti-corrosion, wear-resisting. The positive application pulsed laser surface hardening technology of many researcheres carries out the research of high temperature alloy and functional material in recent years. Up to now, yet there are no employing pulse laser to AgSnO2Contact material is modified processing.
Summary of the invention
It is an object of the invention to provide a kind of by adopting pulse laser equipment to AgSnO2Contact material carries out surface remelting repair process method, thus at AgSnO2The surface of contact material forms the remelted layer that a layer crystal grain is tiny, it is achieved to inefficacy AgSnO2Contact material surface reconditioning.
To achieve these goals, this patent is by the following technical solutions: inefficacy AgSnO2The restorative procedure of contact material surface failure, comprises the steps:
1. choose the AgSnO of inefficacy2Contact material, such as the AgSnO of low-voltage circuit breaker2Contact material, forms Ag film on the surface of contact material. Concrete employing coating process of the prior art or electrodeposition process or spraying process etc., form the Ag film of 20-40 �� m-thick on the surface of contact material.
2. by the above-mentioned AgSnO prepared2Contact material is contained on the fixture of adapted, puts into the operating room of pulse laser equipment, and passes into protective gas in operating room; Conventional protective gas is inertia or nitrogen; As selected conventional argon, open argon bottle, pulse laser operating room (working region) is sprayed argon as protective gas.
3. starting impulse laser equipment, on-load voltage, to AgSnO2The surface of contact material carries out Alloy by Laser Surface Remelting repair process. The main parameters ranges of pulse laser surface remelting repair process: pulse energy 20-30J, pulse width 5-6ns, scanning speed 10-30mm/s, 15-25 �� of inclination angle, defocusing amount 3-5mm.
4. by the AgSnO after reparation2Surface, adopts machining smooth.
Further feature is: adopt coating process or electrodeposition process or spraying process at inefficacy AgSnO2Surface form the pure Ag layer of 20 ��m.
The main parameters ranges of pulse laser surface treatment: pulse energy 20-30J, pulse width 5-6ns, scanning speed 10-30mm/s, 15-25 �� of inclination angle, defocusing amount 3-5mm.
The AgSnO that the present invention repairs2Contact material properties of product are stable, simple to operate, form the remelted layer that crystal grain is tiny on surface, and the performance such as the microhardness on contact material top layer and wearability is greatly improved, and can realize the reparation of batch.
Detailed description of the invention
One inefficacy AgSnO of the present invention2The restorative procedure of contact material surface failure, it is characterised in that comprise the steps:
1) AgSnO of inefficacy is chosen2Contact material, such as the AgSnO of low-voltage circuit breaker2Contact material, on the surface of contact material, adopts coating process or electrodeposition process or spraying process, forms the Ag film of 20-40 �� m-thick on the surface of contact material;
2) by the above-mentioned AgSnO prepared2Contact material is contained on the fixture of adapted, puts into the operating room of pulse laser equipment, and passes into protective gas in operating room;
3) starting impulse laser equipment, on-load voltage, to AgSnO2The surface of contact material carries out Alloy by Laser Surface Remelting repair process.
4) by the AgSnO after reparation2Surface, adopts machining smooth; Carry out machining according to technological requirement, make the surface of contact material reach requirement.
Adopt coating process or electrodeposition process or spraying process at inefficacy AgSnO2Surface form the pure Ag layer of 20 ��m. Coating process, electrodeposition process, spraying process etc., be all the technology of prior art, will not be discussed further at this.
The main parameters ranges of pulse laser surface treatment: pulse energy 20-30J, pulse width 5-6ns, scanning speed 10-30mm/s, 15-25 �� of inclination angle, defocusing amount 3-5mm.
Embodiment 1:
Choose Ag alloy powder, with liquid glue or employing acetic acid silicate binder, at AgSnO2Contact material surface is stained with the Ag powder bed that a layer thickness is 40 ��m; Being contained on the fixture of adapted by dried alloy sample, the surface of alloy carries out Alloy by Laser Surface Remelting repair process. Being contained on the fixture of adapted by sample, put into YAGHWLW-600A pulse laser operating room, then blow protective gas argon, starting impulse laser equipment to the place of laser focusing, the surface of alloy carries out Alloy by Laser Surface Remelting repair process. AgSnO after remelting2Contact material surface defines thickness about 200 ��m and the original SnO reunited2Again disperse uniformly under the remelting of pulse laser, it is achieved that repair. The major parameter that pulsed laser surface hardening processes is: pulse energy 25J, pulse width 5ns, scanning speed 15mm/s, 20 �� of inclination angle, defocusing amount 4mm. To the AgSnO after repairing2Surface, adopts that machining is smooth obtains.
Embodiment 2:
By the AgSnO adopting the electro-deposition method of AgNO3 to lose efficacy under arms2The sample that thickness is 20 ��m is prepared on contact material surface. Being contained on special fixture by sample, put into YAGHWLW-600A pulse laser operating room, then blow protective gas argon, starting impulse laser equipment to the place of laser focusing, the surface of alloy carries out Alloy by Laser Surface Remelting repair process. The major parameter that pulsed laser surface hardening processes is: pulse energy 20J, pulse width 5ns, scanning speed 20mm/s, 25 �� of inclination angle, defocusing amount 5mm. By the AgSnO after reparation2Surface, adopts machining to carry out smooth, obtains the AgSnO of surface reconditioning2Contact material.
What finally illustrate is; above example is only in order to illustrate technical scheme and unrestricted; although the present invention being described in detail with reference to preferred embodiment; it will be understood by those within the art that, all should fall among the scope of protection of present invention for the replacement/amendment without departing from technical solution of the present invention.
Claims (3)
1. an inefficacy AgSnO2The restorative procedure of contact material surface failure, it is characterised in that comprise the steps:
1) AgSnO of inefficacy is chosen2Contact material, adopts coating process or electrodeposition process or spraying process, forms the Ag film of 20-40 �� m-thick on the surface of contact material;
2) by the above-mentioned AgSnO prepared2Contact material is contained on the fixture of adapted, puts into the operating room of pulse laser equipment, and passes into protective gas in operating room;
3) starting impulse laser equipment, on-load voltage, to AgSnO2The surface of contact material carries out Alloy by Laser Surface Remelting repair process;
4) by the AgSnO after reparation2Surface, adopts machining smooth.
2. inefficacy AgSnO according to claim 12The restorative procedure of contact material surface failure, it is characterised in that: adopt coating process or electrodeposition process or spraying process at inefficacy AgSnO2The surface of contact material forms the pure Ag layer of 20 ��m.
3. inefficacy AgSnO according to claim 1 and 22The restorative procedure of contact material surface failure, it is characterised in that: the main parameters ranges of pulse laser surface treatment: pulse energy 20-30J, pulse width 5-6ns, scanning speed 10-30mm/s, 15-25 �� of inclination angle, defocusing amount 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634204.0A CN104400312B (en) | 2014-11-12 | 2014-11-12 | A kind of inefficacy AgSnO2The restorative procedure of the surface failure of contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634204.0A CN104400312B (en) | 2014-11-12 | 2014-11-12 | A kind of inefficacy AgSnO2The restorative procedure of the surface failure of contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104400312A CN104400312A (en) | 2015-03-11 |
| CN104400312B true CN104400312B (en) | 2016-06-08 |
Family
ID=52638011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410634204.0A Expired - Fee Related CN104400312B (en) | 2014-11-12 | 2014-11-12 | A kind of inefficacy AgSnO2The restorative procedure of the surface failure of contact material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104400312B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344011B (en) * | 2019-07-29 | 2021-04-27 | 福建阿石创新材料股份有限公司 | Tin oxide-doped silver target material and preparation method and application thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59116344A (en) * | 1982-11-30 | 1984-07-05 | Matsushita Electric Works Ltd | Contact material |
| CN100431773C (en) * | 2005-11-17 | 2008-11-12 | 沈阳黎明航空发动机(集团)有限责任公司 | Laser melting rehabilitation method for titanium alloy thin-wall case |
| CN101635210B (en) * | 2009-08-24 | 2011-03-09 | 西安理工大学 | Method for repairing defect in tungsten copper-copper integral electric contact material |
| GB2477154B (en) * | 2010-01-26 | 2012-03-21 | Rolls Royce Plc | A method of restoring a metallic component |
| CN102059500A (en) * | 2010-11-25 | 2011-05-18 | 秦皇岛洪川实业有限公司 | Laser repairing method for tooth corona reconstructing of transmission tooth roller of single-roller crusher |
-
2014
- 2014-11-12 CN CN201410634204.0A patent/CN104400312B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104400312A (en) | 2015-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107498045B (en) | A kind of increasing material manufacturing method of the high-strength brass alloys of leadless environment-friendly | |
| CN111850543B (en) | Laser cladding seven-element high-entropy alloy coating and preparation method thereof | |
| CN106834974A (en) | iron-based alloy coating and method for forming the same | |
| CN106756999B (en) | A kind of method that laser remolten improves refractory metal surfaces silicide coating surface quality | |
| CN101838807A (en) | Laser cladding coating material for inlet valve and exhaust valve of engine and coating thereof | |
| US10150183B2 (en) | Method of forming a coating or of three-dimensional structural elements on substrate surfaces, which is/are formed by TiAl, by laser build-up welding | |
| US9175169B2 (en) | Thermally sprayed completely amorphic oxide coating | |
| CN111636061A (en) | Preparation method for producing CuCr composite contact through batch type laser cladding | |
| CN105603354A (en) | Method for preparing metal zinc alloy target by arc-spraying process | |
| JP2009280842A (en) | Method of manufacturing electrode for electrical discharge surface treatment, and electrode for electrical discharge surface treatment | |
| CN105562932A (en) | Method for carrying out lap-jointing on laser cladding composite coating by adopting friction-stir welding technology | |
| CN104400312B (en) | A kind of inefficacy AgSnO2The restorative procedure of the surface failure of contact material | |
| US20200407834A1 (en) | COMPOSITE COATING CONTAINING Ba2-xSrxSmTaO6 CERAMIC AND PREPARATION METHOD THEREOF | |
| CN102127729B (en) | Soldering strengthening method for thermal sprayed coating on surface of metal material | |
| EP1722003A1 (en) | Alloy target for PVD-process, method for producing said alloy target and PVD-proces using said alloy target | |
| CN116356313B (en) | Pulse plasma arc cladding layer and cladding process thereof | |
| CN105297010B (en) | A kind of method that glassy metal coating is prepared using electric spark deposition technique | |
| CN103540933B (en) | The preparation method of a kind of Cr-Ni-Mo system stainless steel surface Functional Graded Ceramics wear-resistant coating | |
| KR102662193B1 (en) | Vacuum insulated glass (VIG) unit with metallic peripheral edge seal and/or method of making the same | |
| EP0911424A1 (en) | Making of composite materials | |
| CN112222552A (en) | Gamma electrode wire and preparation method thereof | |
| CN112159963A (en) | TZO target material and preparation method thereof | |
| CN110735103A (en) | titanium-based powder core wire and preparation and spraying methods thereof | |
| DE19958424A1 (en) | Composite material for thin-film coating of large substrates comprises a base layer of titanium or primed steel or copper, a transitional layer of primer and titanium dioxide and a working layer of titanium dioxide and metal | |
| CN117305829B (en) | Preparation method of nano ceramic particle reinforced high-entropy alloy-based composite powder suitable for cold spraying |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20161112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |