CN102024592B - Preparation technology for fixed contact - Google Patents
Preparation technology for fixed contact Download PDFInfo
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- CN102024592B CN102024592B CN 201010572062 CN201010572062A CN102024592B CN 102024592 B CN102024592 B CN 102024592B CN 201010572062 CN201010572062 CN 201010572062 CN 201010572062 A CN201010572062 A CN 201010572062A CN 102024592 B CN102024592 B CN 102024592B
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Abstract
The invention discloses a preparation technology for a fixed contact, comprising the steps of casting, hot pressing, cold pressing, surface waste side removing, polishing, and the like; and the fixed contact prepared by the preparation technology in the invention has better electrical conductivity.
Description
Technical field
The present invention relates to a kind of preparation technology of fixed contact, the preparation technology of the fixed contact of the production high conductivity that particularly a kind of usefulness casting, red pressure and cold-press process combine.
Background technology
The fixed contact of existing high-pressure aerated cabinet generally is with copper billet fusing, and the mode through die casting prepares then, this preparation technology height that consumes energy, and also the fixed contact inside of casting usually has trachoma, influences the quality and the electric conductivity of fixed contact.
Summary of the invention
The objective of the invention is to ropy problem, a kind of preparation technology of fixed contact is provided to existence in the existing fixed contact preparation described in the background technology.
Realize that technical scheme of the present invention is following:
A kind of preparation technology of fixed contact, this technology may further comprise the steps:
The 1st step, be raw material,, water and cast from the fixed contact blank casting die that graphite material processes, form the fixed contact blank its high temperature melting with useless red copper;
The 2nd step, amputate the unnecessary part of blank casting gate;
The 3rd step, blank surface sand-blasting are removed the impurity on blank surface, guarantee the bright and clean smooth of surface;
The 4th step, blank heating burning is red is placed on then and carries out die casting on the hydraulic press, and its thickness is pressed onto 19.0～20.0mm;
The 5th step, the slitter edge that excision die casting forms on punch press;
The impurity on blank surface is removed in the 6th step, secondary sandblast, makes its any surface finish smooth;
The 7th step, blank is placed on the hydraulic press repeated multiple times colds pressing, after colding pressing, blank is cut edge at every turn, reach 18.3～18.7mm up to the thickness of blank;
The 8th step, on punch press, the blank surface is flattened processing, make blank thickness reach 18.0～18.2mm;
The 9th step, the blank surface is further handled, make its smooth surface smooth, and thickness guarantees to process finished product at 17.9～18.1mm;
With the fixed contact electroplate of the described finished product of step 9, further promote the conductive effect of blank.
The described surface treatment of step 9 comprises polishing product surrounded surface, corner and slitter edge, makes the blank surfacing.
The described surface treatment of step 9 also is included in the further slitter edge of the enterprising row of milling machine and handles and on lathe, machine, and smart then the throwing guaranteed the blank lustrous surface.
Beneficial effect of the present invention is for because the preparation technology of fixed contact of the present invention at first utilizes copper raw material to cast, and casts from the mould that graphite material processes watering after the copper fusing, processes blank; Then blank is carried out surface treatment, carry out hot pressing and colding pressing repeatedly then, make the blank moulding; And in hot pressing and cold pressure procedure, eliminate its inner trachoma, and make the fixed contact internal structure of finished product fine and close, there is not trachoma; Guarantee the performance of its conduction, in this process, through repeatedly cold pressing and surface treatment makes the geomery of fixed contact satisfy the needs of design; And smooth surface, simultaneously, in order to strengthen the conductivity of fixed contact; At the fixed contact electroplate of finished product, because the electric conductivity and the heat transfer property of silver are more a lot of by force than the conductivity and the thermal conductivity of copper, therefore; Through at finished product fixed contact electroplate, the electric conductivity of fixed contact and heat dispersion can obviously be promoted, improve the quality of finished product fixed contact.
Embodiment
Followingly further narrate according to the preparation technology of embodiment to fixed contact of the present invention:
When selecting materials, select red copper, because red copper is the simple substance of copper, electric conductivity will be got well much than the electric conductivity of the copper that contains impurity, therefore, in the preparation fixed contact, should select red copper for use.With the red copper high temperature melting, water and cast from the blank casting die that graphite material processes, prepare the blank of fixed contact; Want big because this blank size is compared with actual demand, the thickness of blank is generally about 20mm, and the size of actual fixed contact is generally 18mm; And in casting cycle, because of may there be trachoma in the reason inside of steam, therefore; To carry out deep processing to blank, just can prepare the fixed contact that meets application requirements.After the blank casting was accomplished, the redundance that the casting gate around it is gone out removed, and then blasting treatment is carried out on its surface, removed the impurity on blank surface, guaranteed its surfacing and free from foreign meter.Then blank is burnt redly, on hydraulic press, carry out hot pressing,, the thickness of blank is handled between the 19mm to 20mm through hot pressing; Remove the slitter edge that produces in the hot pressing then, and then sandblast is carried out on the blank surface, remove the impurity on surface, make its any surface finish smooth; Then, blank is placed on carries out colding pressing repeatedly on the hydraulic press, after colding pressing at every turn; Cut edge, the slitter edge that produces of will colding pressing removes, and handles between the 18.3mm to 18.7mm up to the thickness of blank; Stop to cold pressing, on punch press, the blank surface is flattened processing, make blank thickness reach 18.0～18.2mm; Then to around the blank, surface, corner and slitter edge polish, make the blank smooth surface, and then machine on the lathe; Make the actual demand of size conforms at its each position, smart then the throwing processed finished product; Make the finished surface light, attractive in appearance, and thickness is at 17.9～18.1mm; For the electric conductivity that strengthens fixed contact can also carry out silver-platedly on the fixed contact surface, make it more attractive in appearance, electric conductivity is better.
Claims (4)
1. the preparation technology of a fixed contact, it is characterized in that: this technology may further comprise the steps:
The 1st step, be raw material,, water and cast from the fixed contact blank casting die that graphite material processes, form the fixed contact blank its high temperature melting with useless red copper;
The 2nd step, amputate the unnecessary part of blank casting gate;
The 3rd step, blank surface sand-blasting are removed the impurity on blank surface, guarantee the bright and clean smooth of surface;
The 4th step, blank heating burning is red is placed on then and carries out die casting on the hydraulic press, and its thickness is pressed onto 19.0～20.0mm;
The 5th step, the slitter edge that excision die casting forms on punch press;
The impurity on blank surface is removed in the 6th step, secondary sandblast, makes its any surface finish smooth;
The 7th step, blank is placed on the hydraulic press repeated multiple times colds pressing, after colding pressing, blank is cut edge at every turn, reach 18.3～18.7mm up to the thickness of blank;
The 8th step, on punch press, the blank surface is flattened processing, make blank thickness reach 18.0～18.2mm;
The 9th step, the blank surface is further handled, make its smooth surface smooth, and thickness guarantees to process finished product at 17.9～18.1mm.
2. the preparation technology of fixed contact according to claim 1 is characterized in that: with the fixed contact electroplate of the described finished product of step 9, further promote the conductive effect of blank.
3. the preparation technology of fixed contact according to claim 1 is characterized in that: the described surface treatment of step 9 comprises polishing product surrounded surface, corner and slitter edge, makes the blank surfacing.
4. the preparation technology of fixed contact according to claim 1 is characterized in that: the described surface treatment of step 9 also is included in the further slitter edge of the enterprising row of milling machine and handles and on lathe, machine, and smart then the throwing guaranteed the blank lustrous surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010572062 CN102024592B (en) | 2010-12-02 | 2010-12-02 | Preparation technology for fixed contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010572062 CN102024592B (en) | 2010-12-02 | 2010-12-02 | Preparation technology for fixed contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102024592A CN102024592A (en) | 2011-04-20 |
| CN102024592B true CN102024592B (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010572062 Active CN102024592B (en) | 2010-12-02 | 2010-12-02 | Preparation technology for fixed contact |
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| CN (1) | CN102024592B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008984B (en) * | 2012-11-27 | 2015-05-27 | 靖江市海源有色金属材料有限公司 | Processing method of special-shaped bar material of fixed arcing contact |
| CN103769585B (en) * | 2014-01-15 | 2016-08-03 | 瑞安市永明电工合金厂 | A kind of multiple press of silver alloy contact of breaker |
| CN104117748B (en) * | 2014-08-19 | 2016-10-19 | 郑州机械研究所 | A kind of high voltage power transmission and transforming contact and welding method thereof |
| CN105023783A (en) * | 2015-07-24 | 2015-11-04 | 宁波耀华电气科技有限责任公司 | Conveying mechanism of polishing and shaping machine for static contacts |
| CN108231459A (en) * | 2018-01-05 | 2018-06-29 | 万沙电气有限公司 | A kind of connector contact moulding process |
| CN113369498B (en) * | 2021-08-10 | 2021-11-02 | 陕西斯瑞新材料股份有限公司 | Surface post-treatment method for 3D printing copper alloy contact material |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264143A (en) * | 2000-02-24 | 2000-08-23 | 周武平 | Technology for making Cu-Cr contact materials for vacuum switch |
| CN1239723C (en) * | 2000-12-20 | 2006-02-01 | 昆明贵金属研究所 | Copper base alloy electric vacuum contact material and method for making same |
| CN1260382C (en) * | 2002-04-10 | 2006-06-21 | 贵研铂业股份有限公司 | Copper base alloy electric vacuum contact material and preparation method thereof |
| CN1209778C (en) * | 2003-07-29 | 2005-07-06 | 哈尔滨工业大学 | Process for preparation of copper-based powder electrical contact |
| CN101290838A (en) * | 2008-06-19 | 2008-10-22 | 河南科技大学 | Preparing method of contact tip composite material of vacuum switch based on dispersed copper |
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| CN102024592A (en) | 2011-04-20 |
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Address after: 213138 Jiangsu province Changzhou new North Menghe River town of Fumin Industrial Park Tang Jia Er Road No. 58 Patentee after: Jiangsu spring power Polytron Technologies Inc Address before: 213138 Jiangsu province Changzhou new North Menghe River town of Fumin Industrial Park Tang Jia Er Road No. 58 Patentee before: Jiangsu Dechun Power Electric Co., Ltd. |