CN107739876A - A kind of polynary low beryllium content copper alloy and preparation method thereof - Google Patents
A kind of polynary low beryllium content copper alloy and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- C22C9/00—Alloys based on copper
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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Abstract
The present invention relates to a kind of polynary low beryllium content copper alloy and preparation method thereof, belong to Metallic Functional Materials technical field.The polynary low beryllium content copper alloy of the present invention, is made up of the component of following weight percentage：Be 0.2% 0.6%, Co 0.2% 1.5%, Zr 0.1% 0.5%, surplus is Cu and inevitable impurity.The polynary low beryllium content copper alloy of the present invention, while beryllium element content is reduced to greatest extent, by adding the alloying elements such as cobalt, zirconium, and control the dosage of each element, with high tensile strength while ensureing with high conductivity, the product demand in the fields such as high-efficiency and continuous Casting Roller, high-end connector is met.
Description
Technical field
The present invention relates to a kind of polynary low beryllium content copper alloy and preparation method thereof, belong to Metallic Functional Materials technical field.
Background technology
Beryllium-bronze is as typical Precipitation enhanced type copper alloy, because with high intensity and hardness, good conduction
Property and the performance characteristics such as thermal conductivity, excellent wearability, block resistance, be widely used in ocean engineering, Aero-Space, electronics electricity
The fields such as gas, petrochemical industry, haberdashery and hardware.The content of Be elements is typically in 0.2- in beryllium-bronze as defined in existing international standard
Between 2.0wt.%, because Be elements and its oxide are poisonous, environment is polluted, it is desirable to which Be contents are more low better, but significantly drop
Low Be contents can cause the reduction of alloy strength hardness, electrical and thermal conductivity performance increase, how reduce the acquisition of Be contents to greatest extent
While high electrical and thermal conductivity performance, make up caused by dropping Be that alloy mechanical property is too low, it met Casting Roller, connect
The basic mechanical performance requirement of the application fields such as plug-in unit, is the key for developing such alloy.
Application publication number be CN 101748311A Chinese invention patent disclose a kind of copper base alloy electrode material and its
Manufacturing process, the copper base alloy electrode material contain following component and content：Ni 1.0~1.5%, Co 0.2~0.5%, Zr
0.08~0.5%, Be≤0.35, remaining is Cu.The conductance of the copper base alloy electrode material is up to more than 50%, but tension is strong
The mechanical properties such as degree are not good enough.
The content of the invention
It is an object of the invention to provide it is a kind of while possessing high conductivity with polynary low compared with high-tensile
Beallon.
Second purpose of the present invention is to provide a kind of preparation method of above-mentioned polynary low beryllium content copper alloy.
To achieve the above object, the technical scheme of polynary low beryllium content copper alloy of the invention is：
A kind of polynary low beryllium content copper alloy, is made up of the component of following weight percentage：Be 0.2%-0.6%, Co
0.2%-1.5%, Zr 0.1%-0.5%, surplus are Cu and inevitable impurity.
Cobalt element and zr element, the addition of cobalt element are added in Copper substrate has castering action to hardness of copper alloy, and
There is attenuation to conductance, and as the increase of Co contents, hardness gradually increase, and conductance constantly declines；Zr element
(Zr) mechanical property of alloy, especially mechanical behavior under high temperature can be substantially improved；The polynary low beryllium content copper alloy of the present invention is in maximum
While limit reduces beryllium content (Be), cobalt element and zr element are added, further improves the tension of polynary low beryllium content copper alloy
Intensity and electric conductivity.
The inevitably impurity is Al, Si, Fe, Sn.Described Al, Si, Fe, Sn total content≤0.06%.
Above-mentioned polynary low beryllium content copper alloy, is preferably made up of the component of following weight percentage：Be 0.5%, Co
0.9%, Zr 0.3%, surplus are Cu and inevitable impurity.
The inevitably impurity is Al, Si, Fe, Sn.Described Al, Si, Fe, Sn total content≤0.04%.
The polynary low beryllium content copper alloy of the present invention leads high-strength beraloy for polynary low beryllium height.
The technical scheme of preparation method of the polynary low beryllium content copper alloy of the present invention is：
A kind of preparation method of above-mentioned polynary low beryllium content copper alloy, comprises the following steps：
1) by raw material in 1200~1300 DEG C of meltings 30~50 minutes, then moulding by casting, cool down to obtain polynary low beryllium copper and close
Golden ingot casting；
2) polynary low beryllium content copper alloy ingot casting obtained by step 1) is plastically deformed, carries out solution treatment, cold successively afterwards
Deformation process, Ageing Treatment produce.
Raw material in step 1) is raw copper, cobalt, intermediate alloy Cu-3.3Be, intermediate alloy Cu-40Zr.
The dosage of raw material is calculated according to the weight of each component in above-mentioned polynary low beryllium content copper alloy in step 1)
Arrive.
Raw copper in step 1) is electrolytic copper plate.Mass fraction >=99.95% of copper in the electrolytic copper plate.
Raw material cobalt in step 1) is pure cobalt piece.
Raw material in step 1) is clipped before melting, drying and surface degreasing processing.
Vacuum is maintained at -0.02MPa~-0.04MPa in step 1) fusion process.
Melting stands 1~3min after 30~50 minutes after molten surface is in mirror-like in step 1), is passed through argon gas, will be molten
Liquid is directly poured into metal mold.
The temperature of cast is 1250~1350 DEG C in step 1).
Polynary low beryllium content copper alloy ingot casting is machined out before being plastically deformed in step 2).
The machining includes the machining that alloy cast ingot is carried out to circumference and bottom end face.The circumference amount of machining is
Unilateral 2~4mm, end face amount of machining are 2~4mm.Then amputate ingot top rising head.The length amputated is that ingot casting is always high
The 1/5~1/3 of degree.
Being plastic deformation in step 2) is moulded the ingot casting after machining by horizontal extruder or free forging press
Property deformation, it is rectangular slab that section, which is made,.
The temperature of plastic deformation in step 2) is 900~970 DEG C, and the time is 1.0~1.5h.
The deflection of plastic deformation is 85%~95% in step 2).
Solution treatment is to be incubated 0.5~2h in 890 DEG C~970 DEG C under inert gas shielding in step 2), is then shifted
Cooled down into water；The transfer time is 3~5s.
890 DEG C~970 DEG C 0.5~2h of insulation are set forth in carry out in tube furnace.
The transfer time is that sample is taken out from tube furnace and is transferred to the time used in water.
The inert gas is nitrogen or argon gas.The water is the running water of flowing.
Cold deformation in step 2) is cold-rolling deformation.Specially：Alloy after solution treatment is enterprising in rolling testing machine
The reciprocating cold rolling of row, makes slab thickness constantly reduce.
The deflection of cold deformation is 10%~80% in step 2).
Ageing Treatment is to be incubated 0.5~8h in 400 DEG C~500 DEG C under inert gas shielding in step 2), then air cooling
To room temperature.
Inert gas in above-mentioned ageing process is nitrogen or argon gas.
The polynary low beryllium content copper alloy of the present invention, while beryllium element (Be) content is reduced to greatest extent, by adding cobalt
(Co), the alloying element such as zirconium (Zr), and the dosage of each element is controlled, with high tension while ensureing with high conductivity
Intensity, meet the product demand in the fields such as high-efficiency and continuous Casting Roller, high-end connector.The polynary low beryllium content copper alloy of the present invention,
Conductance >=45%IACS, room temperature tensile intensity >=750MPa, elongation percentage >=4%.
The preparation method of the polynary low beryllium content copper alloy of the present invention, raw material is simple, relative inexpensiveness, and passes through present invention side
Polynary low beryllium content copper alloy that method obtains while there is excellent electric conductivity and mechanical property.
Embodiment
Embodiment 1
The polynary low beryllium content copper alloy of the present embodiment, is made up of the component of following weight percentage：Be 0.5%, Co
0.9%, Zr 0.3%, impurity component Al, Si, Fe, Sn total content≤0.04%, surplus Cu.
The preparation method of the polynary low beryllium content copper alloy of the present embodiment, comprises the following steps：
1) founding：By raw material electrolytic copper plate (Cu >=99.95%), intermediate alloy Cu-3.3Be, pure cobalt piece (Co >=
99.8%) after, intermediate alloy Cu-40Zr, clipped, drying and surface degreasing processing, stocked up according to component content composition；
Melting is carried out using vacuum induction melting furnace afterwards, sequentially adds electrolytic copper plate, pure cobalt piece, intermediate alloy Cu-3.3Be, centre
Alloy Cu-40Zr, smelting temperature are 1200 DEG C, and 50 minutes duration, vacuum is maintained at -0.02MPa；Treated by observation window
Molten surface is passed through argon gas, liquation is directly poured into metal mold, pouring temperature is in standing 1 minute after mirror-like
1250 DEG C, cool down afterwards, take out, obtain polynary low beryllium content copper alloy ingot casting；
2) machine：The alloy cast ingot of preparation is carried out to the machining of circumference and bottom end face, circumference on engine lathe
Amount of machining is unilateral 2mm, and end face amount of machining is 2mm；Then, sample is put into sawing on sawing machine removes ingot top and emit
Mouthful, the length amputated is the 1/5 of ingot casting total height；
3) it is plastically deformed：Ingot casting after machining is plastically deformed by horizontal extruder, it is rectangular that section, which is made,
The slab of shape, plastic deformation temperatures control is at 900 DEG C, and the heating and thermal insulation time is 1.5 hours, and deformation amount controlling is 85%；
4) solution treatment：The copper alloy that will be prepared by founding and plastic deformation process, it is put into the tube furnace of nitrogen protection
In with stove be warming up to 950 DEG C, be incubated 1 hour, then be transferred quickly to be cooled down in the running water of flowing by sample, complete solid
Molten heat treatment, transfer time 3s；
5) cold-rolling deformation：By the alloy after solution treatment, reciprocating cold rolling is carried out on rolling testing machine, makes slab thick
Degree direction constantly reduces, deformation amount controlling 70%；
6) aging strengthening model：Alloy after cold rolling is handled, it is put into the tube furnace of nitrogen protection and is warming up to 480 with stove
DEG C, 4 hours are incubated, then sample is taken out from heating furnace, puts and is cooled to room temperature in atmosphere, is produced.
Embodiment 2
The polynary low beryllium content copper alloy of the present embodiment, is made up of the component of following weight percentage：Be 0.2%, Co
0.2%, Zr 0.1%, impurity component Al, Si, Fe, Sn total content≤0.05%, surplus Cu.
The preparation method of the polynary low beryllium content copper alloy of the present embodiment, comprises the following steps：
1) founding process：By raw material electrolytic copper plate (Cu >=99.95%), intermediate alloy Cu-3.3Be, pure cobalt piece (Co >=
99.8%) after, intermediate alloy Cu-40Zr, clipped, drying and surface degreasing processing, stocked up according to component content composition；
Melting is carried out using vacuum induction melting furnace afterwards, sequentially adds electrolytic copper plate, pure cobalt piece, intermediate alloy Cu-3.3Be, centre
Alloy Cu-40Zr, smelting temperature are 1300 DEG C, and 30 minutes duration, vacuum is maintained at -0.04MPa；Treated by observation window
Molten surface is passed through argon gas, liquation is directly poured into metal mold, pouring temperature is in standing 3 minutes after mirror-like
1350 DEG C, cool down afterwards, take out, obtain polynary low beryllium content copper alloy ingot casting；
2) machine：The alloy cast ingot of preparation is carried out to the machining of circumference and bottom end face, circumference on engine lathe
Amount of machining is unilateral 4mm, and end face amount of machining is 4mm；Then, sample is put into sawing on sawing machine removes ingot top and emit
Mouthful, the length amputated is the 1/3 of ingot casting total height；
3) it is plastically deformed：Ingot casting after machining is plastically deformed by free forging press, it is rectangular that section, which is made,
The slab of shape, plastic deformation temperatures control is at 970 DEG C, and the heating and thermal insulation time is 1.0 hours, and deformation amount controlling is 95%；
4) solution treatment：The copper alloy that will be prepared by founding and plastic deformation process, it is put into the tube furnace of nitrogen protection
In with stove be warming up to 890 DEG C, be incubated 0.5 hour, then be transferred quickly to be cooled down in the running water of flowing by sample, complete
Solution heat treatment, transfer time 5s；
5) cold-rolling deformation：By the alloy after solution treatment, reciprocating cold rolling is carried out on rolling testing machine, makes slab thick
Degree direction constantly reduces, deformation amount controlling 80%；
6) aging strengthening model：Alloy after cold rolling is handled, it is put into the tube furnace of nitrogen protection and is warming up to 400 with stove
DEG C, 8 hours are incubated, then sample is taken out from heating furnace, puts and is cooled to room temperature in atmosphere, is produced.
Embodiment 3
The polynary low beryllium content copper alloy of the present embodiment, is made up of the component of following weight percentage：Be 0.6%, Co
1.5%, Zr 0.5%, impurity component Al, Si, Fe, Sn total content≤0.06%, surplus Cu.
The preparation method of the polynary low beryllium content copper alloy of the present embodiment, comprises the following steps：
1) founding process：By raw material electrolytic copper plate (Cu >=99.95%), intermediate alloy Cu-3.3Be, pure cobalt piece (Co >=
99.8%) after, intermediate alloy Cu-40Zr, clipped, drying and surface degreasing processing, stocked up according to component content composition；
Melting is carried out using vacuum induction melting furnace afterwards, sequentially adds electrolytic copper plate, pure cobalt piece, intermediate alloy Cu-3.3Be, centre
Alloy Cu-40Zr, smelting temperature are 1250 DEG C, and 40 minutes duration, vacuum is maintained at -0.03MPa；Treated by observation window
Molten surface is passed through argon gas, liquation is directly poured into metal mold, pouring temperature is in standing 2 minutes after mirror-like
1300 DEG C, cool down afterwards, take out, obtain polynary low beryllium content copper alloy ingot casting；
2) machine：The alloy cast ingot of preparation is carried out to the machining of circumference and bottom end face, circumference on engine lathe
Amount of machining is unilateral 3mm, and end face amount of machining is 3mm；Then, sample is put into sawing on sawing machine removes ingot top and emit
Mouthful, the length amputated is the 1/4 of ingot casting total height；
3) it is plastically deformed：Ingot casting after machining is plastically deformed by free forging press, it is rectangular that section, which is made,
The slab of shape, plastic deformation temperatures control is at 900 DEG C, and the heating and thermal insulation time is 1.5 hours, and deformation amount controlling is 90%；
4) solution treatment：The copper alloy that will be prepared by founding and plastic deformation process, it is put into the tube furnace of argon gas protection
In with stove be warming up to 970 DEG C, be incubated 2 hours, then be transferred quickly to be cooled down in the running water of flowing by sample, during transfer
Between be 4s, complete solution heat treatment；
5) cold-rolling deformation：By the alloy after solution treatment, reciprocating cold rolling is carried out on rolling testing machine, makes slab thick
Degree direction constantly reduces, deformation amount controlling 10%；
6) aging strengthening model：Alloy after cold rolling is handled, it is put into the tube furnace of argon gas protection and is warming up to 500 with stove
DEG C, 5 hours are incubated, then sample is taken out from heating furnace, puts and is cooled to room temperature in atmosphere, is produced.
Experimental example
Conductance, elongation, room temperature tensile strength test are carried out to the polynary low beryllium content copper alloy in embodiment 1-3, as a result
As shown in table 1.
The performance test results of polynary low beryllium content copper alloy obtained by the embodiment 1-3 of table 1
| Project | Conductance (%IACS) | Room temperature tensile intensity (MPa) | Elongation (%) |
| Embodiment 1 | 47 | 766 | 16 |
| Embodiment 2 | 55 | 745 | 25 |
| Embodiment 3 | 45 | 782 | 12 |
From the content of table 1, polynary low beryllium content copper alloy of the invention has high resist while high electrical conductivity is kept
Tensile strength and elongation, the plasticity having had.
Claims (10)
1. a kind of polynary low beryllium content copper alloy, it is characterised in that be made up of the component of following weight percentage：Be 0.2%-
0.6%, Co 0.2%-1.5%, Zr 0.1%-0.5%, surplus are Cu and inevitable impurity.
2. polynary low beryllium content copper alloy according to claim 1, it is characterised in that by the component group of following weight percentage
Into：Be 0.5%, Co 0.9%, Zr 0.3%, surplus are Cu and inevitable impurity.
3. a kind of preparation method of polynary low beryllium content copper alloy as claimed in claim 1, it is characterised in that comprise the following steps：
1) by raw material in 1200~1300 DEG C of meltings 30~50 minutes, then moulding by casting, cools down to obtain polynary low beryllium content copper alloy casting
Ingot；
2) polynary low beryllium content copper alloy ingot casting obtained by step 1) is plastically deformed, carries out solution treatment, cold deformation successively afterwards
Processing, Ageing Treatment produce.
4. the preparation method of polynary low beryllium content copper alloy according to claim 3, it is characterised in that the temperature of cast in step 1)
Spend for 1250~1350 DEG C.
5. the preparation method of polynary low beryllium content copper alloy according to claim 3, it is characterised in that the plasticity in step 2) becomes
Shape is crimp or swaging deformation.
6. the preparation method of polynary low beryllium content copper alloy according to claim 3, it is characterised in that the plasticity in step 2) becomes
The temperature of shape is 900~970 DEG C, and the time is 1.0~1.5h.
7. the preparation method of polynary low beryllium content copper alloy according to claim 3, it is characterised in that be plastically deformed in step 2)
Deflection be 85%~95%.
8. the preparation method of polynary low beryllium content copper alloy according to claim 3, it is characterised in that solution treatment in step 2)
To be incubated 0.5~2h in 890 DEG C~970 DEG C under inert gas shielding, it is then transferred in water and cools down；The transfer time is
3~5s.
9. the preparation method of polynary low beryllium content copper alloy according to claim 3, it is characterised in that cold deformation in step 2)
Deflection is 10%~80%.
10. the preparation method of polynary low beryllium content copper alloy according to claim 3, it is characterised in that the timeliness in step 2)
Handle to be incubated 0.5~8h in 400 DEG C~500 DEG C under inert gas shielding, be then air-cooled to room temperature.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705688A (en) * | 2020-12-24 | 2021-04-27 | 国工恒昌新材料沧州有限公司 | Method for preparing forge piece by using electric slag beryllium copper ingot |
| CN113088753A (en) * | 2021-03-31 | 2021-07-09 | 五矿铍业股份有限公司 | Method for preparing beryllium-copper master alloy by adopting vacuum consumable arc melting |
| CN113136502A (en) * | 2021-04-22 | 2021-07-20 | 汕头华兴（饶平）铜业有限公司 | Rare earth alloying high-conductivity copper material for casting roll and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333609A (en) * | 2007-06-28 | 2008-12-31 | 周水军 | Low copper beryllium mold material for gravitation and low-pressure casting and production process thereof |
| CN101550504A (en) * | 2009-05-25 | 2009-10-07 | 扬中市利达合金制品有限公司 | Manufacturing method of high-conductivity low-beryllium bronze band |
| CN101705389A (en) * | 2009-12-03 | 2010-05-12 | 江苏科技大学 | Copper alloy for manufacturing mould and preparation method thereof |
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2017
- 2017-11-09 CN CN201711098250.3A patent/CN107739876A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333609A (en) * | 2007-06-28 | 2008-12-31 | 周水军 | Low copper beryllium mold material for gravitation and low-pressure casting and production process thereof |
| CN101550504A (en) * | 2009-05-25 | 2009-10-07 | 扬中市利达合金制品有限公司 | Manufacturing method of high-conductivity low-beryllium bronze band |
| CN101705389A (en) * | 2009-12-03 | 2010-05-12 | 江苏科技大学 | Copper alloy for manufacturing mould and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705688A (en) * | 2020-12-24 | 2021-04-27 | 国工恒昌新材料沧州有限公司 | Method for preparing forge piece by using electric slag beryllium copper ingot |
| CN113088753A (en) * | 2021-03-31 | 2021-07-09 | 五矿铍业股份有限公司 | Method for preparing beryllium-copper master alloy by adopting vacuum consumable arc melting |
| CN113136502A (en) * | 2021-04-22 | 2021-07-20 | 汕头华兴（饶平）铜业有限公司 | Rare earth alloying high-conductivity copper material for casting roll and preparation method thereof |
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