CN102644003A - High-strength high-conductivity corrosion-resistant rare earth-copper alloy and manufacturing method thereof - Google Patents

High-strength high-conductivity corrosion-resistant rare earth-copper alloy and manufacturing method thereof Download PDF

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Publication number
CN102644003A
CN102644003A CN201110038816XA CN201110038816A CN102644003A CN 102644003 A CN102644003 A CN 102644003A CN 201110038816X A CN201110038816X A CN 201110038816XA CN 201110038816 A CN201110038816 A CN 201110038816A CN 102644003 A CN102644003 A CN 102644003A
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China
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alloy
copper
strength
add
melting
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CN201110038816XA
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Chinese (zh)
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宋东升
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宋东升
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Publication of CN102644003A publication Critical patent/CN102644003A/en

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Abstract

High-strength high-conductivity corrosion-resistant rare earth-copper alloy and a manufacturing method thereof relate to copper-based alloy and production technology thereof. The technical scheme adopted by the invention is that: trace alloy elements of La and Zn are added on the basis of traditional CuCrZr alloy; the comprehensive performance of the alloy is balanced through processes of hot rolling, solid solution treatment, cold rolling, aging, and the like, and the cost is reduced; extensive applications in lead frames, electrode alloy, contact wires, connectors, and the like in the electronics industry are realized. The beneficial effects of the invention are that: the high-temperature strength and wear resistance of the copper alloy are enhanced; the flatness of the copper alloy is high; and the comprehensive breaking force and operation security and reliability of the rare earth-copper alloy are improved.

Description

Corrosion resistant rare-earth copper alloy of high-strength high conductivity and method of manufacture thereof
Technical field
The present invention relates to copper base alloy and production technique thereof, relate in particular to corrosion resistant rare-earth copper alloy of a kind of high-strength high conductivity and method of manufacture thereof.
Background technology
Because metallic copper has favorable conductive heat conductivility, corrosion resistance nature and is easy to characteristics such as preparation, copper has obtained application widely in electronics, electric power, machinery and field of aerospace, becomes the important electron metallic substance.But metallic copper often requires to have HS in Application Areas, and HS and high conductivity are a pair of conflicting characteristics.Cu alloy material not only has high intensity but also have high electroconductibility; Directly be the target that everybody pursues, copper alloy adds alloying element such as silver, tin and processes in copper, owing to added these alloying elements; Aggravated lattice distortion; Thereby improved the hot strength and the wear resistance of osculatory, thereby be suitable for high-intensity requirement, but added after the alloying elements such as silver, tin; Brought problems such as composition segregation and crystal grain is thick, thereby made the planeness of copper alloy and comprehensive breaking strength also be difficult to meet the demands fully.
Summary of the invention
The objective of the invention is to overcome above technical deficiency, corrosion resistant rare-earth copper alloy of a kind of high-strength high conductivity and method of manufacture thereof are provided.The technical scheme of employing of the present invention is:
On the basis of traditional CuCrZr alloy, add trace alloying element La, Zn; And through technologies such as hot rolling, solution treatment, cold rolling, timeliness; Make the over-all properties of its alloy reach balance; And cost is reduced, thereby realize the widespread use of its lead frame, electrode metal, osculatory and junctor etc. in electron trade.
The corrosion resistant rare-earth copper alloy of high-strength high conductivity that the present invention proposes, the weight percent that contains composition is: the 0.01-0.30% rare-earth elements of lanthanum, 0.05-1.0% zinc, 0.01 one 1.0% chromium, 0.01 one 0.6% zirconium, all the other are copper.For further improving intensity, on the basis of said components, also can add weight percent is 0.1-1.0% iron or cobalt element and 0.05~0.8% titanium elements.
The present invention also provides a kind of method of making above-mentioned alloy, and this method comprises the steps:
The first step melting: at first add electrolytic copper, copper one chromium master alloy, melting 20~30 minutes adds copper one lanthanum master alloy then, and melting 1~3 minute adds copper one zinc master alloy and copper one zirconium master alloy at last, and melting was cast after 1~3 minute; Add pure iron, pure cobalt, pure titanium if desired, should add at initial period as bed material.
The second step hot rolling: " C is incubated 1~4 hour, and it is rolling on the hot rolls of routine, to carry out 50~80% distortion then 850~950 with above-mentioned cast alloys;
The 3rd step solution treatment: the sheet material after rolling is packed in the heat treatment furnace,, its alloying element is fully dissolved in the copper matrix, carry out quench treatment then 950~1050 ℃ of insulations 10~30 minutes down;
The 4th step is cold rolling: the alloy after will quenching carries out 60~90% deformation process;
The 5th step ageing treatment: alloy is incubated 1~24 hour at 400~600 ℃;
The 6th step finish to gauge: alloy carried out 30~50% deformation process.
Through above-mentioned measure, the invention has the beneficial effects as follows the hot strength and the wear resistance that have strengthened copper alloy, have higher planeness simultaneously, improved the comprehensive breaking strength of rare-earth copper alloy and the security and the safety of operation.
Embodiment
Further the present invention is explained according to embodiment below:
Embodiment: on the basis of traditional CuCrZr alloy, add trace alloying element La, Zn; And through technologies such as hot rolling, solution treatment, cold rolling, timeliness; Make the over-all properties of its alloy reach balance; And cost is reduced, thereby realize the widespread use of its lead frame, electrode metal, osculatory and junctor etc. in electron trade.
Preferred version is (weight ratio): 0.02% rare-earth elements of lanthanum, and 1.0% zinc, 0.5% chromium, 0.5% zirconium, 1.0% iron, 0.8% titanium, all the other are copper.
The effect of each metallic element is following in the corrosion resistant rare-earth copper alloy of high-strength high conductivity:
1, copper (Cu): be the residual harmful element as P, S generally.The existence of Cu can reduce the mechanical property of steel, destroys the welding property of steel, steel is added at forging rolling etc. produce red brittleness man-hour.Add a certain amount of Cu in the steel, can improve the annealing hardness of steel, reduce cost.If contain Cu0.15~0.25% o'clock, can make the performance of the atmospheric corrosion resistance of steel.
2, chromium (Cr): can increase the mechanical property and the wear resistance of steel, can increase the quenching degree of steel and the deformability after the quenching.Can increase simultaneously hardness, elasticity, the coercive force and anti-powerful of steel again, the solidity to corrosion of increase steel and thermotolerance etc.
3, titanium (Ti): can prevent and reduce the generation of bubble in the steel, timeliness susceptibility, cold shortness and the corrodibility of the hardness of raising steel, crystal grain thinning, reduction steel.Cobalt (Co): can improve and improve the high-temperature behavior of steel, increase its red hardness, the oxidation-resistance of raising steel and corrosion resisting property etc.
4, lanthanum increases performances such as hardness of alloy and tensile strength.

Claims (2)

1. corrosion resistant rare-earth copper alloy of high-strength high conductivity and method of manufacture thereof; Characteristic is that the weight percent that contains composition is: 0.01-0.30% rare-earth elements of lanthanum, 0.05-1.0% zinc, 0.01 one 1.0% chromium; 0.01 one 0.6% zirconium; All the other are copper, and for further improving intensity, on the basis of said components, also can add weight percent is 0.1-1.0% iron or cobalt element and 0.05~0.8% titanium elements.
2. corrosion resistant rare-earth copper alloy of high-strength high conductivity according to claim 1 and method of manufacture thereof; Characteristic is that this method comprises the steps: the first step melting: at first add electrolytic copper, copper one chromium master alloy; Melting 20~30 minutes adds copper one lanthanum master alloy, melting 1~3 minute then; Add copper one zinc master alloy and copper one zirconium master alloy at last, melting was cast after 1~3 minute; Add pure iron, pure cobalt, pure titanium if desired, should add at initial period as bed material; The second step hot rolling: " C is incubated 1~4 hour, and it is rolling on the hot rolls of routine, to carry out 50~80% distortion then 850~95 with above-mentioned cast alloys; The 3rd step solution treatment: the sheet material after rolling is packed in the heat treatment furnace,, its alloying element is fully dissolved in the copper matrix, carry out quench treatment then 950~1050 ℃ of insulations 10~30 minutes down; The 4th step is cold rolling: the alloy after will quenching carries out 60~90% deformation process; The 5th step ageing treatment: alloy is incubated 1~24 hour at 400~600 ℃; The 6th step finish to gauge: alloy carried out 30~50% deformation process.
CN201110038816XA 2011-02-16 2011-02-16 High-strength high-conductivity corrosion-resistant rare earth-copper alloy and manufacturing method thereof CN102644003A (en)

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CN201110038816XA CN102644003A (en) 2011-02-16 2011-02-16 High-strength high-conductivity corrosion-resistant rare earth-copper alloy and manufacturing method thereof

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CN201110038816XA CN102644003A (en) 2011-02-16 2011-02-16 High-strength high-conductivity corrosion-resistant rare earth-copper alloy and manufacturing method thereof

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CN102644003A true CN102644003A (en) 2012-08-22

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103131886A (en) * 2013-03-18 2013-06-05 湖南银联湘北铜业有限公司 Chromium/zirconium/iron/copper alloy electrode material, and preparation and application method thereof
CN104342575A (en) * 2014-10-11 2015-02-11 烟台万隆真空冶金股份有限公司 Electrified railway chromium-zirconium-copper contact line and machining process thereof
CN105562430A (en) * 2015-12-28 2016-05-11 河南师范大学 Method for improving mechanical strength of nonmagnetic textured copper-nickel alloy composite base band
CN107799496A (en) * 2017-09-01 2018-03-13 华南理工大学 A kind of high reliability copper alloy bonding wire used for electronic packaging and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002241873A (en) * 2001-02-16 2002-08-28 Hitachi Cable Ltd High strength and highly electrically conductive copper alloy and method for producing copper alloy material
CN1417357A (en) * 2002-11-15 2003-05-14 清华大学 High-strength and high-conductivity RE-Cu alloy and its production process
CN1730690A (en) * 2005-08-08 2006-02-08 河南科技大学 Rare earth copper alloy and its preparation method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002241873A (en) * 2001-02-16 2002-08-28 Hitachi Cable Ltd High strength and highly electrically conductive copper alloy and method for producing copper alloy material
CN1417357A (en) * 2002-11-15 2003-05-14 清华大学 High-strength and high-conductivity RE-Cu alloy and its production process
CN1730690A (en) * 2005-08-08 2006-02-08 河南科技大学 Rare earth copper alloy and its preparation method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103131886A (en) * 2013-03-18 2013-06-05 湖南银联湘北铜业有限公司 Chromium/zirconium/iron/copper alloy electrode material, and preparation and application method thereof
CN103131886B (en) * 2013-03-18 2015-12-02 湖南银联湘北铜业有限公司 A kind of chromium ferrozirconium copper alloy electrode material and methods for making and using same thereof
CN104342575A (en) * 2014-10-11 2015-02-11 烟台万隆真空冶金股份有限公司 Electrified railway chromium-zirconium-copper contact line and machining process thereof
CN105562430A (en) * 2015-12-28 2016-05-11 河南师范大学 Method for improving mechanical strength of nonmagnetic textured copper-nickel alloy composite base band
CN107799496A (en) * 2017-09-01 2018-03-13 华南理工大学 A kind of high reliability copper alloy bonding wire used for electronic packaging and preparation method thereof
CN107799496B (en) * 2017-09-01 2020-05-22 华南理工大学 High-reliability copper alloy bonding wire for electronic packaging and preparation method thereof

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