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CN106498227A - The preparation method of one Albatra metal - Google Patents

The preparation method of one Albatra metal Download PDF

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Publication number
CN106498227A
CN106498227A CN201610997786.8A CN201610997786A CN106498227A CN 106498227 A CN106498227 A CN 106498227A CN 201610997786 A CN201610997786 A CN 201610997786A CN 106498227 A CN106498227 A CN 106498227A
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China
Prior art keywords
copper
preparation
copper alloy
magnesium
hot rolling
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CN201610997786.8A
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Chinese (zh)
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CN106498227B (en
Inventor
颜承龙
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Ningbo zhanci New Material Technology Co.,Ltd.
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WUHU MINTAI COPPER INDUSTRY Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/02Making non-ferrous alloys by melting
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C9/00Alloys based on copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/026Alloys based on copper
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/44Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H01L2224/45001Core members of the connector
    • H01L2224/45099Material
    • H01L2224/451Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
    • H01L2224/45138Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
    • H01L2224/45147Copper (Cu) as principal constituent

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Conductive Materials (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)

Abstract

The invention discloses the preparation method of an Albatra metal, belongs to copper alloy preparing technical field.The copper alloy contain percentage by weight be containing percentage by weight be 0.05% lead, 0.7% iron, 0.04% magnesium, 0.4~0.5% chromium and 0.55~0.70% zirconium, remaining is copper.Preparation method is mixed smelting, ingot casting, hot rolling, solid solution, cold rolling and pickling processes by each component of above-mentioned weight ratio.Its conductance is 91~95%IACS, and elongation percentage is 12~20%, and tensile strength is 620~655MPa.Performance requirement of the electronics industry wire to Cu alloy material can preferably be met, it can also be used to have high demands the Cu alloy material field for leading high-elongation.And there is process is simple, advantage with low cost.

Description

The preparation method of one Albatra metal
Present patent application is for Application No.:2014106299394 divisional application, the applying date of original application For:2014-11-11, invention and created name is:A kind of high-strength highly-conductive wire copper alloy and preparation method thereof.
Technical field
The invention belongs to copper alloy preparing technical field, more particularly, it relates to the preparation method of an Albatra metal.
Background technology
Multi-element composite micro-alloying technology is the study hotspot of current high-performance copper alloy material.Copper conductor alloy material will Ask with high conductivity, higher intensity requirement and good elongation percentage.The Chinese patent application of Application No. 02133772.1 A kind of copper alloy material for contact net wire is disclosed, containing tellurium, lithium and magnesium in this kind of Cu alloy material, the intensity of copper alloy is made Increase, but conductance is low, only up to 76%IACS.The Chinese patent application of Application No. 02133772.1 is disclosed A kind of copper alloy material for contact net wire, not only contains tellurium in this kind of Cu alloy material, also containing lithium and magnesium, the addition of magnesium, Make the intensity of kuttern increase, but conductance is low, only up to 76%IACS.In Application No. 03135189.1 State's patent application discloses a kind of high electric material of copper, tellurium rare earth without containing silver, and which has the disadvantage to be difficult to high intensity and high connductivity The coupling of rate, especially when conductance reaches 94.5%IACS, intensity is substantially not enough, only 330MPa or so.Therefore develop A kind of alloy material of the high-strength highly-conductive of copper conductor is the problem solved required for inventor.
Content of the invention
, problem to be solved
For the above-mentioned problems in the prior art, the present invention provides the preparation method of an Albatra metal, containing weight percent Than for 0.05% lead, 0.7% iron, 0.04% magnesium, 0.4~0.5% chromium and 0.55~0.70% zirconium, remaining is copper, and with reference to special Technology for Heating Processing obtains the excellent wire Cu alloy material of conductance and elongation percentage.
, technical scheme
In order to solve the above problems, it is an object of the invention to provide a kind of high-strength highly-conductive wire copper alloy and preparation method thereof Material.
Another object of the present invention is to be to provide a kind of high-strength highly-conductive wire copper alloy and preparation method thereof material Preparation method.
In order to realize first technical purpose of the present invention, its technical scheme is:A kind of high-strength highly-conductive wire copper alloy Material, it is characterised in that containing percentage by weight be 0.05% lead, 0.7% iron, 0.04% magnesium, 0.4~0.5% chromium and 0.55~ 0.70% zirconium, remaining are copper.
A kind of optimization group of the technical scheme is divided into, containing percentage by weight be 0.05% lead, 0.7% iron, 0.04% magnesium, 0.4% chromium and 0.55% zirconium, remaining is copper.
A kind of optimization group of the technical scheme is divided into, containing percentage by weight be 0.05% lead, 0.7% iron, 0.04% magnesium, 0.45% chromium and 0.62% zirconium, remaining is copper.
A kind of optimization group of the technical scheme is divided into, containing percentage by weight be 0.05% lead, 0.7% iron, 0.04% magnesium, 0.5% chromium and 0.70% zirconium, remaining is copper.
In order to realize another technical purpose of the present invention, its technical scheme is:A kind of high-strength highly-conductive wire copper alloy Preparation method, it is characterised in that:Comprise the steps:
(1)Each component is weighed according to above-mentioned weight ratio, melting at 1200~1350 DEG C after mixing injects crystallizing wheel after melting, Form slab ingot;
(2)To slab ingot hot rolling, its temperature is 800~950 DEG C, carries out the hot rolling of 12 passages, and reduction ratio is 75%, obtains hot rolling Material;
(3)Solution treatment is carried out to hot rolling material, its temperature is 850~950 DEG C, and temperature retention time is 1~2h, and then water quenching obtains Arrive cold material;
(4)The cold-rolling treatment that 20~40% are carried out to the cold material, finally carries out pickling, removes the oxide on surface.
Can be had both using the electric conductivity and elongation percentage of the wire Cu alloy material of preparation method gained of the present invention, tissue is Even, precipitated phase small and dispersed, alloy are cheap, and its conductance reaches 91~95%IACS, and elongation percentage is 12~20%, and tension is strong Spend for 620~655MPa, can preferably meet performance requirement of the copper conductor to copper alloy in electronics industry.
, beneficial effect
Compared to prior art, beneficial effects of the present invention are:
(1)What the present invention was bold adds micro and cheap Element Lead in molten copper so as to the alloy material after melting Material conductance is greatly improved.
(2)Present invention adds elemental iron, because of its obvious solution strengthening effect and dispersion-strengthened effect, makes alloy material Obtain electric conductivity to be recovered, and elongation percentage is improved.
(3)The present invention is also added into element magnesium, and the alloy material specific strength which forms is high, damping good, thermal fatigue property Good, non-aging, there are good thermal conductivity and good extrusion process performance again.
(4)Add in the present invention, Cr and Zr acts primarily as Precipitation reinforcing and hinders the effect of recrystallization.In copper The middle alloying element for adding solubility with temperature to reduce and being obviously reduced(Such as Cr, Zr)Saturation is formed by higher temperature solid solution Solid solution, then by timeliness, decomposes supersaturated solid solution, and alloying element diffusion-precipitation in the form of precipitated phase is distributed in base In body.Precipitated phase can effectively prevent the movement of crystal boundary and dislocation, greatly improve alloy strength.
(5)The present invention has also combined water quenching and solution treatment so that the performance of alloy has obtained further raising, and this Invented technology is simple, with low cost.
Specific embodiment
The present invention is further described below with reference to specific embodiment.
Embodiment 1:0.05% lead, 0.7% iron, 0.04% magnesium, 0.4% chromium and 0.55% zirconium are weighed according to percentage by weight, remaining For copper.
Each component be blended in 1200-1350 DEG C at melting, after melting inject casting ladle, then by casting ladle injection crystallizing wheel crystallization, Slab ingot is formed, to slab ingot forge hot, it is 800~950 DEG C that its temperature is its temperature, carries out the hot rolling of 12 passages, and reduction ratio is 75%, obtain hot rolling material;Solution treatment is carried out to hot rolling material, its temperature is 850~950 DEG C, temperature retention time is 1~2h, so Water quenching afterwards, obtains cold material;Then 20~40% cold-rolling treatment is carried out to the cold material, pickling is finally carried out, and removes surface Oxide.Wire Cu alloy material is obtained, its conductance reaches 91%IACS, elongation percentage is 12%, and tensile strength is 630MPa.
Embodiment 2:0.05% lead, 0.7% iron, 0.04% magnesium, 0.45% chromium and 0.62% zirconium are weighed according to percentage by weight, its Yu Weitong, each component be blended in 1200-1350 DEG C at melting, after melting inject casting ladle, then by casting ladle injection crystallizing wheel crystallization, shape Into slab ingot, to slab ingot forge hot, it is 800~950 DEG C that its temperature is its temperature, carries out the hot rolling of 12 passages, and reduction ratio is 75%, Obtain hot rolling material;Solution treatment is carried out to hot rolling material, its temperature is 850~950 DEG C, temperature retention time is 1~2h, Ran Houshui Quench, obtain cold material;Then 20~40% cold-rolling treatment is carried out to the cold material, pickling is finally carried out, and removes the oxidation on surface Thing.Wire Cu alloy material is obtained, its conductance reaches 93%IACS, elongation percentage is 17%, and tensile strength is 655MPa.
Embodiment 3:0.05% lead, 0.7% iron, 0.04% magnesium, 0.5% chromium and 0.70% zirconium are weighed according to percentage by weight, remaining For copper, each component be blended in 1200-1350 DEG C at melting, inject casting ladle after melting, then by casting ladle injection crystallizing wheel crystallization, formed Slab ingot, to slab ingot forge hot, it is 800~950 DEG C that its temperature is its temperature, carries out the hot rolling of 12 passages, and reduction ratio is 75%, obtains Arrive hot rolling material;Solution treatment is carried out to hot rolling material, its temperature is 850~950 DEG C, temperature retention time is 1~2h, Ran Houshui Quench, obtain cold material;Then 20~40% cold-rolling treatment is carried out to the cold material, pickling is finally carried out, and removes the oxidation on surface Thing.Wire Cu alloy material is obtained, its conductance reaches 95%IACS, elongation percentage is 20%, and tensile strength is 620MPa.
The process is simple of the Cu alloy material of the present invention, with low cost, performance meets wire material property demand.But Protection scope of the present invention is not limited to and is applied to copper alloy wire field, it can also be used to have high demands the copper alloy for leading high-elongation Material Field.

Claims (5)

1. the preparation method of an Albatra metal, it is characterised in that:Comprise the steps:
(1)Each component is weighed according to weight ratio, melting at 1200~1350 DEG C after mixing injects crystallizing wheel after melting, is formed Slab ingot;
(2)To slab ingot hot rolling, its temperature is 800~950 DEG C, carries out the hot rolling of 12 passages, and reduction ratio is 75%, obtains hot rolling Material;
(3)Solution treatment is carried out to hot rolling material, its temperature is 850~950 DEG C, and temperature retention time is 1~2h, and then water quenching obtains Arrive cold material;
(4)The cold-rolling treatment that 20~40% are carried out to the cold material, finally carries out pickling, removes the oxide on surface;
For 89~95%IACS, elongation percentage is 12~20% to copper alloy its conductance for adopting above-mentioned steps to prepare, and tensile strength is 620~655MPa.
2. the preparation method of an Albatra metal according to claim 1 and 2, it is characterised in that:The copper alloy contains weight Amount percentage is 0.05% lead, 0.7% iron, 0.04% magnesium, 0.4~0.5% chromium and 0.55~0.70% zirconium, and remaining is copper etc..
3. the preparation method of an Albatra metal according to claim 2, it is characterised in that:The copper alloy contains weight hundred Divide than being 0.05% lead, 0.7% iron, 0.04% magnesium, 0.4% chromium and 0.55% zirconium, remaining is copper.
4. the preparation method of an Albatra metal according to claim 2, it is characterised in that:The copper alloy contains weight hundred Divide than being 0.05% lead, 0.7% iron, 0.04% magnesium, 0.45% chromium and 0.62% zirconium, remaining is copper.
5. the preparation method of an Albatra metal according to claim 2, it is characterised in that:The copper alloy contains weight hundred Divide than being 0.05% lead, 0.7% iron, 0.04% magnesium, 0.5% chromium and 0.70% zirconium, remaining is copper.
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CN201410629939.4A CN104328304B (en) 2014-11-11 2014-11-11 Copper alloy for high-strength and high-conductivity lead and preparation method of copper alloy
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114990376A (en) * 2022-06-02 2022-09-02 浙江大学 Ternary high-strength high-conductivity copper alloy and preparation method thereof

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* Cited by examiner, † Cited by third party
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CN106222484A (en) * 2016-07-20 2016-12-14 合肥恒研智能科技有限公司 A kind of built-in industrial control machine housing high-strength alloy
CN107204320B (en) * 2017-05-25 2019-11-29 京东方科技集团股份有限公司 Plain conductor, thin film transistor (TFT) and production method, array substrate and display device
JP2020133000A (en) * 2019-02-20 2020-08-31 三菱マテリアル株式会社 Copper alloy material, commutator segment, and electrode material
CN114606414B (en) * 2022-03-11 2022-12-02 北京理工大学 High-conductivity regenerated aluminum alloy conductor and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6152332A (en) * 1984-08-21 1986-03-15 Toshiba Corp Bonding wire
CN101629254A (en) * 2009-06-25 2010-01-20 中南大学 Multi-element composite micro-alloying copper alloy with high strength and high conductivity and preparation method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101265536A (en) * 2007-03-12 2008-09-17 北京有色金属研究总院 High-strength high-conductivity copper alloy and preparation method thereof
CN104004939A (en) * 2014-06-13 2014-08-27 甘肃大鑫铜业有限责任公司 High-strength and high-conductivity copper alloy and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6152332A (en) * 1984-08-21 1986-03-15 Toshiba Corp Bonding wire
CN101629254A (en) * 2009-06-25 2010-01-20 中南大学 Multi-element composite micro-alloying copper alloy with high strength and high conductivity and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114990376A (en) * 2022-06-02 2022-09-02 浙江大学 Ternary high-strength high-conductivity copper alloy and preparation method thereof
CN114990376B (en) * 2022-06-02 2023-08-22 浙江大学 A kind of ternary high-strength high-conductivity copper alloy and preparation method thereof

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CN106498227B (en) 2018-01-30
CN104328304B (en) 2017-01-11
CN106544533A (en) 2017-03-29
CN104328304A (en) 2015-02-04

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Inventor after: Pan Lifeng

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Inventor after: Liu Jianping

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