CN101745791A - Non-vacuum smelting technology of copper alloy - Google Patents
Non-vacuum smelting technology of copper alloy Download PDFInfo
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- CN101745791A CN101745791A CN200810162577A CN200810162577A CN101745791A CN 101745791 A CN101745791 A CN 101745791A CN 200810162577 A CN200810162577 A CN 200810162577A CN 200810162577 A CN200810162577 A CN 200810162577A CN 101745791 A CN101745791 A CN 101745791A
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Abstract
The invention discloses a non-vacuum smelting technology of copper alloy. The method mainly adopts non-vacuum smelting technology; in particular, the method uses a composite agent of borax and glass as covering agent and metal magnesium and rare earth element as additives to smelt under protective gas, then a small amount of alloy element chromium and zirconium are added in copper under the non-vacuum condition to strengthen through dispersion and precipitation and finally high-strength high-conductivity copper-chromium-zirconium alloy can be prepared through smelting. The main production technology of the non-vacuum smelting technology comprises the following steps: smelting copper-chromium-zirconium alloy through non-vacuum induction, performing semicontinuous ingot casting, performing hot extrusion with a hydraulic press to obtain bar blank, performing cold drawing several times, aging under protective atmosphere, analyzing product performance and metallographic structure, measuring conductivity and warehousing the product. The invention is suitable for the production of high-strength high-conductivity copper-chromium-zirconium alloy bar section.
Description
Technical field
The present invention relates to a kind of melting technique of alloyed copper, especially relate to a kind of non-vacuum melting technique of alloyed copper
Background technology
Copper has outstanding electric conductivity, be widely used in industries such as electric power, electronics, welding, it is low that but the shortcoming of copper is an intensity, wear no resistance, along with science and technology development, electronic information technology, communications and transportation, defense sector are increasing to the demand of various high property copper alloy lead performances, and most advanced and sophisticated digital communication equipment, senior household electrical appliance need use the high-fidelity lead.Press for novel Cu alloy material, it has high conductance simultaneously, has high intensity, hardness, anti-wear performance again.All be to adopt the method for vacuum melting to obtain the high strength and high conductivity Cu alloy material at present both at home and abroad, the shortcoming of this method is the production cost height, and yield rate is low, complex manufacturing.
Summary of the invention
The objective of the invention is to requirement, a kind of non-vacuum melting technique of alloyed copper is provided at above-mentioned copper alloy.
In order to achieve the above object, the present invention has mainly adopted non-vacuum melting technique to finish.Adopt special flux to cover; the protective gas melting; described special flux; the complexing agent that adopts borax+glass exactly adopts magnesium metal+rare earth element as additive, the protective gas melting as coverture; under antivacuum state; in copper, add a spot of chromium, zircaloy element,, melt out the Cu-Cr-Zr alloy of high-strength high conductivity by the disperse precipitation strength.The main production of described non-vacuum melting technique is: antivacuum induction melting Cu-Cr-Zr alloy-→ semicontinuous ingot casting-→ hydraulic press hot extrude pressure bar parison material-→ repeatedly cold stretch-→ protective atmosphere under timeliness-→ properties of product, metallographic structure research, electric conductivity measuring-→ the finished product warehouse-in.
1, antivacuum induction melting Cu-Cr-Zr alloy
With copper is raw material, and Cu is more than 99%; Add Cr 0.5%; Zr 0.1%, adopts special flux to cover, and the complexing agent that promptly adds borax+glass adopts magnesium metal+rare earth element as additive, the protective gas melting as coverture.Continuous directional solidification prepares alloy blank.
2, semicontinuous ingot casting
Special protection in crystallizer.
3, hydraulic press hot extrude pressure bar parison material
Use hydraulic press crimp, ingot casting eddy-current heating before the extruding, extruding back product will quench.
4, repeatedly cold stretch
Adopt cold rolling and method drawing, under the condition that does not produce crystallization again, obtain big extensional, make the thick continuous columnar behind the solidification forming, after distortion, become the continuous fiber crystalline substance, the bar base can be machined directly into the wire rod below the 0.1mm, the thinnest 20 μ m that reach, and handle without any need for intermediate annealing, cold working rate is greater than 50%, through the cold drawn excellent section bar that is stretched into user's needs.
5, timeliness under the protective atmosphere
Aging temp is 450-500 ℃.Adopt heat treatment method to improve alloy strength and conductance.
6, properties of product, metallographic structure research, electric conductivity measuring
Product is carried out finished product detection, and the key technical indexes is as follows: chemical analysis: Cu is more than 99%; Cr 0.5%; Zr 0.1%; Tensile strength: б ъ 〉=450Mpa; Brinell hardness: HB 〉=140kg/cm; Conductance: λ 〉=80%IACS; Rod section bar gauge lattice kind: pole, square, rectangle bar, specification φ 6-φ 30cm.
7, finished product warehouse-in
The key technical indexes of the present invention is as follows:
Chemical analysis: Cu is more than 99%; Cr 0.3-0.8%; Zr 0.1-0.3%
Tensile strength: б ъ 〉=450Mpa
Brinell hardness: HB 〉=140kg/cm
Conductance: λ 〉=80%IACS
Rod section bar gauge lattice kind: pole, square, rectangle bar, specification φ 6-φ 30cm.
The present invention compared with prior art has following obvious advantage and innovation.(1) advanced technology.The present invention adopts the non-vacuum melting technique of alloy copper rod section bar, owing to chromium, two kinds of elements of zirconium are as easy as rolling off a log and oxidation is closed and formed oxide, this will cause into one is the alloying element scaling loss, is difficult to add among the alloy, the 2nd, formed oxide worsens alloy property, causes oxide inclusions.Therefore all still adopt at present the technology of vacuum melting both at home and abroad, but this technology production cost of alloy is too high, yield rate is extremely low again, and complex manufacturing.And the inventive method is the utilization non-vacuum melting technique; adopt special flux to cover; the complexing agent that promptly adopts borax+glass is as coverture; adopt magnesium metal+rare earth element as additive; the protective gas melting under antivacuum state, adds a spot of chromium, zircaloy element in copper; by the disperse precipitation strength, melt out the Cu-Cr-Zr alloy of high-strength high conductivity.(2), quality is good.The present invention adopts cold rolling and method drawing, under the condition that does not produce crystallization again, obtain big extensional, make the thick continuous columnar behind the solidification forming, after distortion, become the continuous fiber crystalline substance, the bar base can be machined directly into the wire rod below the 0.1mm, the thinnest 20 μ m that reach, and handle without any need for intermediate annealing, the phenomenon that breaks end can not appear.(3) purposes is wide.High strength and high conductivity Cu-Cr-Zr alloy rod section bar has the market demand widely, mainly process material in the application aspect electronics, the electric power soldering appliance with excellent type, as the spot-wedling electrode in the industry, connector, the connector of commutator, electronics industry, mould in the metallurgical industry, the magnetron cavity in the electrovacuum etc.
The present invention is applicable to and produces high strength and high conductivity Cu-Cr-Zr alloy rod section bar.
Claims (4)
1. the non-vacuum melting technique of an alloyed copper is characterized in that the main production of described non-vacuum melting technique is: antivacuum induction melting Cu-Cr-Zr alloy-→ semicontinuous ingot casting-→ hydraulic press hot extrude pressure bar parison material-→ repeatedly cold stretch-→ protective atmosphere under timeliness-→ properties of product, metallographic structure research, electric conductivity measuring-→ the finished product warehouse-in.
2. the non-vacuum melting technique of alloyed copper according to claim 1 is characterized in that described antivacuum induction melting Cu-Cr-Zr alloy, adopts non-vacuum melting technique to finish, and in fusion process, is raw material with copper, and Cu is more than 99%; Add Cr 0.5%; Zr 0.1%, and the complexing agent that adopts borax+glass is as coverture, and magnesium metal+rare earth element is as additive; the protective gas melting promptly under antivacuum state, adds a spot of chromium, zircaloy element in copper; by the disperse precipitation strength, melt out the Cu-Cr-Zr alloy of high-strength high conductivity.
3. the non-vacuum melting technique of alloyed copper according to claim 1, it is characterized in that its Cu-Cr-Zr alloy the key technical indexes is as follows: chemical analysis: Cu is more than 99%; Cr0.5%; Zr 0.1%; Tensile strength: б ь 〉=450Mpa; Brinell hardness: HB 〉=140kg/cm; Conductance: λ 〉=80%IACS; Rod section bar gauge lattice kind: pole, square, rectangle bar, specification φ 6-φ 30cm.
4. the non-vacuum melting technique of alloyed copper according to claim 1, it is characterized in that described repeatedly cold stretch is the method that adopts cold rolling and drawing, under the condition that does not produce crystallization, obtains big extensional, make the continuous columnar behind the solidification forming, after distortion, become the continuous fiber crystalline substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810162577A CN101745791A (en) | 2008-12-04 | 2008-12-04 | Non-vacuum smelting technology of copper alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810162577A CN101745791A (en) | 2008-12-04 | 2008-12-04 | Non-vacuum smelting technology of copper alloy |
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| CN101745791A true CN101745791A (en) | 2010-06-23 |
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| CN200810162577A Pending CN101745791A (en) | 2008-12-04 | 2008-12-04 | Non-vacuum smelting technology of copper alloy |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266922A (en) * | 2011-06-17 | 2011-12-07 | 九星控股集团有限公司 | Non-vacuum casting and forming method of chromium zirconium copper alloy plate for continuous casting crystallizer |
| CN105543546A (en) * | 2016-02-29 | 2016-05-04 | 沈阳有色金属加工有限公司 | Technology for smelting and casting C18150 alloy under atmosphere condition |
| CN107475559A (en) * | 2017-09-21 | 2017-12-15 | 中国西电电气股份有限公司 | A kind of high-strength highly-conductive high thermal stability chrome zirconium copper alloy and preparation method thereof |
| CN108339953A (en) * | 2018-02-09 | 2018-07-31 | 陕西斯瑞新材料股份有限公司 | It is a kind of it is antivacuum under draw the production technology of continuous casting chromium-zirconium-copper slab ingot |
| CN111774539A (en) * | 2020-06-08 | 2020-10-16 | 西安斯瑞先进铜合金科技有限公司 | Preparation method of non-vacuum downward-drawing copper-zirconium alloy slab ingot |
| CN112831686A (en) * | 2021-01-07 | 2021-05-25 | 宁波金田铜业(集团)股份有限公司 | Preparation method of high-strength high-conductivity copper-chromium-zirconium bar |
| CN114807671A (en) * | 2022-06-14 | 2022-07-29 | 西安理工大学 | Method for preparing high-strength and high-wear-resistance copper-boron alloy through hot extrusion and cold forging |
-
2008
- 2008-12-04 CN CN200810162577A patent/CN101745791A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266922A (en) * | 2011-06-17 | 2011-12-07 | 九星控股集团有限公司 | Non-vacuum casting and forming method of chromium zirconium copper alloy plate for continuous casting crystallizer |
| CN105543546A (en) * | 2016-02-29 | 2016-05-04 | 沈阳有色金属加工有限公司 | Technology for smelting and casting C18150 alloy under atmosphere condition |
| CN105543546B (en) * | 2016-02-29 | 2017-05-03 | 沈阳有色金属加工有限公司 | Technology for smelting and casting C18150 alloy under atmosphere condition |
| CN107475559A (en) * | 2017-09-21 | 2017-12-15 | 中国西电电气股份有限公司 | A kind of high-strength highly-conductive high thermal stability chrome zirconium copper alloy and preparation method thereof |
| CN107475559B (en) * | 2017-09-21 | 2019-06-18 | 中国西电电气股份有限公司 | A kind of high-strength highly-conductive high thermal stability chrome zirconium copper alloy and preparation method thereof |
| CN108339953A (en) * | 2018-02-09 | 2018-07-31 | 陕西斯瑞新材料股份有限公司 | It is a kind of it is antivacuum under draw the production technology of continuous casting chromium-zirconium-copper slab ingot |
| CN111774539A (en) * | 2020-06-08 | 2020-10-16 | 西安斯瑞先进铜合金科技有限公司 | Preparation method of non-vacuum downward-drawing copper-zirconium alloy slab ingot |
| CN111774539B (en) * | 2020-06-08 | 2021-10-29 | 西安斯瑞先进铜合金科技有限公司 | Preparation method of non-vacuum downward-drawing copper-zirconium alloy slab ingot |
| CN112831686A (en) * | 2021-01-07 | 2021-05-25 | 宁波金田铜业(集团)股份有限公司 | Preparation method of high-strength high-conductivity copper-chromium-zirconium bar |
| CN112831686B (en) * | 2021-01-07 | 2022-03-11 | 宁波金田铜业(集团)股份有限公司 | Preparation method of high-strength high-conductivity copper-chromium-zirconium bar |
| CN114807671A (en) * | 2022-06-14 | 2022-07-29 | 西安理工大学 | Method for preparing high-strength and high-wear-resistance copper-boron alloy through hot extrusion and cold forging |
| CN114807671B (en) * | 2022-06-14 | 2022-09-30 | 西安理工大学 | Method for preparing high-strength and high-wear-resistance copper-boron alloy through hot extrusion and cold forging |
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Application publication date: 20100623 |