CN103028604A - Hot rolling processing method for copper-based electrical contact material - Google Patents
Hot rolling processing method for copper-based electrical contact material Download PDFInfo
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- CN103028604A CN103028604A CN201210403407XA CN201210403407A CN103028604A CN 103028604 A CN103028604 A CN 103028604A CN 201210403407X A CN201210403407X A CN 201210403407XA CN 201210403407 A CN201210403407 A CN 201210403407A CN 103028604 A CN103028604 A CN 103028604A
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Abstract
The invention discloses a hot rolling processing method for a copper-based electrical contact material, which comprises the following processing steps of: (1) heating a belt material (sheet material), which is subjected to hot extrusion surface treatment, in an electric stove under the protection of inert gas; (2) quickly performing hot rolling processing on the heated belt material (sheet material) wherein the passes of primary discharging rolling do not exceed four passes; (3) performing surface cleaning treatment on the belt material (sheet material) which is subjected to hot rolling processing; and (4) performing cold finish rolling on the belt material (sheet material) which is subjected to surface cleaning treatment to a required size. Compared with an electrical contact material prepared by a primary particle pressing method and a cold rolling processing method, the hot rolling processing method for the copper-based electrical contact material increases utilization rate of the material, reduces rolling passes and annealing times, and can greatly reduce energy consumption and production cost. Grains and component phases of the material which is prepared by high plasticity thermal deformation are further refined, and the nonporous electrical contact material which basically reaches a theoretical density can be produced. Compared with the material which is prepared by the current rolling processing method, the electrical conductivity and the mechanical strength of the material are increased obviously, fusion-welding resistance and abrasion resistance are strengthened, and reliability and working life are improved obviously.
Description
Technical field:
The present invention relates to a kind of preparation method of the electrical contact material for low-pressure electronic equipment product, specifically refer to a kind of hot rolling processing method of copper-based electrical contact material.
Background technology:
The used copper-base contact material of low-pressure electronic equipment product forms mainly with the powder metallurgical technique production and processing.Hardness, breaking capacity, anti-melting welding ability and raising working life for improving material are added with graphite, diamond, carbide, metal oxide etc.Its processing method has the compacting of powder simple grain, presses again through sintering to form.Although stock utilization is high, there are the not high shortcoming of density and deficiency, even repeatedly answer the existence that pressure also has hole, cause the conductance of material and mechanical strength to reduce, anti-melting welding is indifferent, and working life shortens.
Other has it to form band (sheet material) by hot extrusion, carries out the cold deformation strengthening of multi-pass through cold rolling, and the contact product is made in final punching press.Although the mechanical performance of material is improved, but because the wetability of above-mentioned additive is bad, it is poor to cause with the matrix binding ability, and plasticity and ductility descend to extrusion strip (sheet material) cold roling reduction being increased band (sheet material) crack at edge will occur and the fish tail crackle occurs.Loss is increased, reduced the utilization rate of material, product quality can not be guaranteed.The little cold rolling pass of drafts must increase, the length that expends time in, and the annealing increased frequency, specific energy consumption rises, and production cost is strengthened.
Summary of the invention:
The objective of the invention is to overcome the copper-based electrical contact reliability of material of the rolling processing of prior art and defective and the deficiency that working life is low and stock utilization is low, energy consumption is large and production cost is high.Provide that a kind of reliability and working life are high and stock utilization is high and the hot rolling processing method of the rolling processing method of the low-voltage electrical apparatus copper-based composition used as electric contacts that energy consumption and production cost are low-a kind of copper-based electrical contact material
Hot rolling processing method of the present invention is as follows for achieving the above object;
1, hot rolling processing may further comprise the steps:
(1), in electric furnace, heats under inert gas shielding through hot extrusion surface-treated band (sheet material).
(2), will carry out rapidly through the band (sheet material) of heating hot rolling processing, the rolling four-pass that is no more than of once coming out of the stove.
(3), will carry out surface cleaning processing through the band (sheet material) after the hot rolling processing.
(4), will carry out cold essence through the band (sheet material) of surface cleaning processing and be rolling to required size.
2, but used hot-rolling mill is inverse operation control hot-rolling mill.
3, initial band (sheet material) thickness before the hot rolling processing is 3mm～20mm.
The heating by electric cooker temperature of step in described 1 (1) is 480 ℃～900 ℃; Inert gas is argon gas or nitrogen; Be 1.5 hours～6.5 hours heat time heating time.
The hot rolling processing passage of step in described 1 (2) is: the first reduction in pass is 40%～55%; The second reduction in pass is 30%～39%; The 3rd reduction in pass is 20%～29%; The four-pass drafts is 10%～19%.
The invention has the beneficial effects as follows:
Hot rolling processing method of the present invention compare with powder simple grain press working method have advantages of high-compactness, mechanical strength is high and resistivity is low; Compare with the cold rolling processing method that to have a loss little, improved the utilization rate of material, rolling pass and annealing number of times are few, and per-unit production energy consumption is little, makes the production cost decrease, and economic effect and social benefit are obvious.
Hot rolling processing method of the present invention is to make crystal grain and form mutually further refinement by High Efficiency Thermal plastic deformation meeting, can process substantially to reach the imporous electrical contact material of solid density.Conductance and the mechanical strength of comparing material with present processing method have obvious rising, and anti-melting welding ability and antiwear property are strengthened, and reliability and working life are improved significantly.
The specific embodiment:
Below by embodiment the present invention is carried out concrete description, only be used for further specifying of the present invention, can not be considered as the restriction to protection domain of the present invention.Those skilled in the art can make some nonessential improvement and adjustment to the present invention according to the content of foregoing invention.
Embodiment is undertaken by following processing method:
(1), in electric furnace, heats under inert gas shielding through hot extrusion surface-treated band (sheet material).
(2), will carry out rapidly through the band (sheet material) of heating hot rolling processing, the rolling four-pass that is no more than of once coming out of the stove.
(3), will carry out surface cleaning processing through the band (sheet material) after the hot rolling processing.
(4), will carry out cold essence through the band (sheet material) of surface cleaning processing and be rolling to required size.
Design parameter such as following table:
But the used hot-rolling mill of above-described embodiment is inverse operation control hot-rolling mill.
The Cu-base composites performance comparison of the same race of three kinds of different processing methods preparations is as follows:
Contrast numeral as seen from table, Cu-base composites relative density and the hardness number of the preparation of hot rolling method are relatively high, and the contact resistance between resistivity and the dynamic/static contact is relatively low.These all come from hot rolling processing High Efficiency Thermal plastic deformation meeting and make crystal grain and form mutually the further result of refinement.
Claims (5)
1. the hot rolling processing method of a copper-based electrical contact material is characterized in that may further comprise the steps:
(1), in electric furnace, heats under inert gas shielding through hot extrusion surface-treated band (sheet material);
(2), will carry out rapidly through the band (sheet material) of heating hot rolling processing, the rolling four-pass that is no more than of once coming out of the stove;
(3), will carry out surface cleaning processing through the band (sheet material) after the hot rolling processing;
(4), will carry out through the band (sheet material) of surface cleaning processing cold finish rolling system and obtain the desired thickness size.
2. a kind of hot rolling processing method of copper-based electrical contact material is characterized in that the heating by electric cooker temperature of described step (1) is 480 ℃～900 ℃ as claimed in claim 1; Inert gas is argon gas or nitrogen; Be 1.5 hours～6.5 hours heat time heating time.
3. a kind of hot rolling processing method of copper-based electrical contact material is characterized in that the hot rolling processing passage of described step (2) is as claimed in claim 1: the first reduction in pass is 40%～55%; The second reduction in pass is 30%～39%; The 3rd reduction in pass is 20%～29%; The four-pass drafts is 10%～19%.
4. a kind of hot rolling processing method of copper-based electrical contact material is characterized in that initial band (sheet material) thickness before the hot rolling processing is 3mm～20mm as claimed in claim 1.
5. but used hot-rolling mill was inverse operation control hot-rolling mill when a kind of hot rolling processing method of copper-based electrical contact material is characterized in that hot rolling as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210403407.XA CN103028604B (en) | 2012-10-16 | 2012-10-16 | A kind of hot rolling processing method of copper-based electrical contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210403407.XA CN103028604B (en) | 2012-10-16 | 2012-10-16 | A kind of hot rolling processing method of copper-based electrical contact material |
Publications (2)
| Publication Number | Publication Date |
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| CN103028604A true CN103028604A (en) | 2013-04-10 |
| CN103028604B CN103028604B (en) | 2016-01-06 |
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| CN201210403407.XA Expired - Fee Related CN103028604B (en) | 2012-10-16 | 2012-10-16 | A kind of hot rolling processing method of copper-based electrical contact material |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62151209A (en) * | 1985-12-25 | 1987-07-06 | Sumitomo Metal Ind Ltd | Rolling method for steel sheet |
| US6033626A (en) * | 1998-09-25 | 2000-03-07 | Kubota Corporation | Heat-resistant cast steel having high resistance to surface spalling |
| CN101274332A (en) * | 2008-02-22 | 2008-10-01 | 中南大学 | Moulding method of magnesium alloy ultrathin sheet material |
| CN102426867A (en) * | 2011-08-25 | 2012-04-25 | 哈尔滨东大高新材料股份有限公司 | Whisker reinforced copper-based electrical contact material and preparation method thereof |
-
2012
- 2012-10-16 CN CN201210403407.XA patent/CN103028604B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62151209A (en) * | 1985-12-25 | 1987-07-06 | Sumitomo Metal Ind Ltd | Rolling method for steel sheet |
| US6033626A (en) * | 1998-09-25 | 2000-03-07 | Kubota Corporation | Heat-resistant cast steel having high resistance to surface spalling |
| CN101274332A (en) * | 2008-02-22 | 2008-10-01 | 中南大学 | Moulding method of magnesium alloy ultrathin sheet material |
| CN102426867A (en) * | 2011-08-25 | 2012-04-25 | 哈尔滨东大高新材料股份有限公司 | Whisker reinforced copper-based electrical contact material and preparation method thereof |
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| CN103028604B (en) | 2016-01-06 |
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Effective date of registration: 20160206 Address after: Yueqing City, Zhejiang province 325600 Yuecheng town public security Road No. 84 Patentee after: Zhou Chaogui Patentee after: Zhang Shutang Address before: 325600 Zhejiang province Yueqing City Chengnan Street Community Dai Industrial Zone Patentee before: Zhejiang Yueyin Alloy Co., Ltd. Patentee before: Zhang Shutang |
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Granted publication date: 20160106 Termination date: 20161016 |
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