CN106086508A - A kind of sliver end ring high-strength highly-conductive Cu Cr Zr RE alloy and preparation method thereof - Google Patents
A kind of sliver end ring high-strength highly-conductive Cu Cr Zr RE alloy and preparation method thereof Download PDFInfo
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- CN106086508A CN106086508A CN201610401790.3A CN201610401790A CN106086508A CN 106086508 A CN106086508 A CN 106086508A CN 201610401790 A CN201610401790 A CN 201610401790A CN 106086508 A CN106086508 A CN 106086508A
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- alloy
- end ring
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
- B22D27/13—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of gas pressure
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- 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
- C22F1/08—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
Abstract
The present invention relates to a kind of sliver end ring high-strength highly-conductive Cu Cr Zr RE alloy and preparation method thereof.Including Cu, Cr, Zr and RE, described each material ratio in terms of wt% is: Cr 0.5 1.2, Zr 0.01 0.5, rare earth element 0 0.5, and surplus is copper or is copper and inevitable impurity element.The present invention uses vacuum melting operation, and overall process leads to argon shield, to greatest extent deoxygenation, deoxidation, solves solution air-breathing, purifying problem；Casting process of the present invention uses compression solidification technology, improves alloy structure consistency, improve element segregation situation；The present invention carries out material composition optimization design by means such as rare-earth element modified and smelting technology improvement, breaks through intensity and the conflicting relation of conductivity, significantly improves electric conductivity while ensureing sliver end ring high intensity.
Description
Technical field
The invention belongs to technical field of material, in particular, provide a kind of sliver end ring high-strength highly-conductive Cu-Cr-Zr-RE
Alloy and technology of preparing thereof.
Background technology
Sliver and end ring are high-speed asynchronous traction electric machine rotor critical component, owing to power of traction motor is big, rotating speed is high, rotor temperature
Rise up to 350-400 DEG C, it is desirable to the critical component material of rotor must have sufficiently high intensity and conductivity, and takes into account higher
High temperature resistance softening power.Along with electric railway develops to high speed, heavy duty direction, critical component material in traction electric machine rotor
Service condition harsher, the material property of the critical component such as sliver and end ring is proposed requirements at the higher level.But, material
Intensity and conductivity are a pair conflicting characteristics, improve materials conductive rate and intensity will be caused to reduce, improve the strength of materials then
Cause declining to a great extent of conductivity.Therefore, how to be obtained by the composition design meanses such as microalloying and advanced preparation technology
It is provided simultaneously with the alloy of high intensity and high conductivity, for the critical component such as sliver and end ring in high-speed asynchronous traction electric machine rotor
Exploitation significant.At present, sliver and end ring use high-strength highly-conductive Cu-Cr-Zr alloy mostly, use tradition melting casting
Make technique, owing to Cr, Zr alloying element fusing point is higher than Cu, easily aoxidize under molten state, air-breathing, component segregation etc. existing
As, cause the alloy of material preparation difficulty and preparation to there is the problems such as dense structure's degree is low, as cast condition defect is serious.Patent CN
201010181509.2 disclose a kind of high-power frequency-adjustable speed-adjustable asynchronous traction motor Cu-alloy conducting bar and end ring and preparation thereof
Method, uses Medium frequency induction melting+D.C.casting technology to prepare sliver and end ring Cu-Cr-Zr alloy material, and during by solid solution
Effect and processing mode are strengthened, and intensity can meet use requirement, but conductivity is the highest.
Summary of the invention
The present invention provides a kind of sliver end ring high-strength highly-conductive Cu-Cr-Zr-RE alloy and preparation method thereof, by Cu-
Cr-Zr alloy adds trace rare-earth element, and uses the techniques such as vacuum melting+compression solidification technology, to prepare tissue cause
Close, excellent performance, properties of product can be met require and the high-strength highly-conductive Cu-Cr-Zr-RE alloy of service condition.
For this technical solution used in the present invention it is: 1. high-strength highly-conductive Cu-Cr-Zr-RE alloying component (wt%) is: Cr
0.5-1.2, Zr 0.01-0.5, rare earth element 0-0.5, surplus is copper and inevitable impurity element.Its rare earth elements is
One or both in cerium, lanthanum, adjust the ratio that rare earth element is shared in the alloy, can obtain varying strength and conductivity phase
In conjunction with alloy, with meet actually used in different demands.
2. carrying out raw material preparation by said components, follow-up preparation technology key step includes:
1) dispensing: according to Cu-Cr-Zr-RE alloy each component requirements dispensing.Raw material selection 99.95% cathode copper, pure Cr plate, Zr
Add with intermediate alloy form with rare earth element.Before melting, raw material is carried out the pretreatment such as skin drying, degreasing and rust removal.
2) vacuum melting+compression solidification: the raw material prepared is put into vacuum induction melting furnace and carries out melting, feed suitable
Sequence is cathode copper, Cr plate, Zr and rare earth intermediate alloy, wherein, before adding Zr and rare earth element, will carry out liquation fully
Deoxidation, degasification, the pretreatment such as slagging-off, use infrared radiation thermometer thermometric, smelting temperature is 1200-1300 DEG C, and vacuum keeps
10-2Below MPa, after fusion process completes, pours into a mould in vacuum chamber, carries out gas pressurized while cast, and pressure is protected
Holding at 0.5-1.0MPa, pouring temperature controls at 1150-1200 DEG C, the demoulding after casting complete.
3) heat treatment: ingot casting loading step (2) obtained carries out solid-solution and aging heat treatment, and solid solubility temperature is 850-980
DEG C, it is incubated 1-2 hour, quick water-cooled；Aging temp is 300-600 DEG C, is incubated 2-6h, air cooling.Alloy after heat treatment is carried out
Performance test.
Sliver end ring high-strength highly-conductive Cu-Cr-Zr-RE alloy and the technology of preparing thereof that the present invention provides, at Cu-Cr-Zr
Adding trace rare-earth element on the basis of alloy, use vacuum melting+compression solidification technology, the combination of three can significantly improve
The combination property of the alloy material of preparation.The addition of rare earth element can not only change the smelting technology of alloy, beneficially refine, removes
Gas and microalloying etc. act on, it is also possible to carry heavy alloyed tensile strength, conductivity, softening temperature and elongation percentage etc..Use true
Empty melting+compression solidification technology, solves conventional casting techniques and prepares that alloy structure consistency is low, be easily generated element segregation and casting
The problems such as state defect.Sliver and end ring performance that the technology using the present invention to provide is prepared are higher than national standard, the fullest
Sliver and the end ring parts performance requirement to alloy material in the high-speed asynchronous traction electric machine rotor of foot, market application foreground is good.
The invention have the advantage that 1) use vacuum melting operation, overall process leads to argon shield, to greatest extent deoxygenation, de-
Oxygen, solves solution air-breathing, purifying problem；
2) casting process uses compression solidification technology, improve alloy structure consistency, improve element segregation situation；
3) carry out material composition optimization design by means such as rare-earth element modified and smelting technology improvement, break through intensity and conduction
The relation that rate is conflicting, significantly improves electric conductivity while ensureing sliver end ring high intensity.
Detailed description of the invention
Case study on implementation one: described in the implementation case, alloying ingredient ratio (wt%) is: Cr=0.8, Zr=0.1, RE=0, surplus be copper and
Inevitably impurity.
Concrete preparation method: first press component requirements dispensing, before melting, raw material is carried out skin drying, degreasing and rust removal etc.
Pretreatment；The raw material prepared being put into vacuum induction melting furnace and carries out melting, heating, (vacuum is maintained at 10 to evacuation- 2Below MPa), infrared radiation thermometer thermometric, fusion process is poured into a mould after completing in vacuum chamber, carries out gas while cast
Pressurization, pressure is maintained at 1.0MPa, and pouring temperature controls at 1200 DEG C, the demoulding after casting complete；Finally ingot casting is loaded and carry out
Solid-solution and aging heat treatment, solid solubility temperature is 950 DEG C, is incubated 1 hour, quick water-cooled；Aging temp is 450 DEG C, is incubated 4h, empty
Cold.Alloy after heat treatment is carried out performance test.
At ambient temperature, the resistance alloys rate of preparation is 2.9 μ Ω cm, and tensile strength and elongation percentage are respectively 350MPa
With 15%, under 350 DEG C of test temperatures, tensile strength and elongation percentage are respectively 300MPa and 12%.
Case study on implementation two: described in the implementation case, alloying ingredient ratio (wt%) is: Cr=0.8, Zr=0.1, RE=0.2, surplus
For copper and inevitable impurity.
Concrete preparation method: first press Cu-Cr-Zr-RE component requirements dispensing, before melting, raw material is carried out surface baking
The pretreatment such as dry, degreasing and rust removal；The raw material prepared being put into vacuum induction melting furnace and carries out melting, heating, evacuation is (true
Reciprocal of duty cycle is maintained at 10-2Below MPa), infrared radiation thermometer thermometric, fusion process pours into a mould after completing in vacuum chamber, cast
Carrying out gas pressurized, pressure is maintained at 1.0MPa simultaneously, and pouring temperature controls at 1200 DEG C, the demoulding after casting complete；Finally will
Ingot casting loading carries out solid-solution and aging heat treatment, and solid solubility temperature is 950 DEG C, is incubated 1 hour, quick water-cooled；Aging temp is 450
DEG C, it is incubated 4h, air cooling.Alloy after heat treatment is carried out performance test:
Case study on implementation three: described in the implementation case, alloying ingredient ratio (wt%) is: Cr=0.8, Zr=0.1, RE=0.5, surplus
For copper and inevitable impurity.
Concrete preparation method: first press Cu-Cr-Zr-RE component requirements dispensing, before melting, raw material is carried out surface baking
The pretreatment such as dry, degreasing and rust removal；The raw material prepared being put into vacuum induction melting furnace and carries out melting, heating, evacuation is (true
Reciprocal of duty cycle is maintained at 10-2Below MPa), infrared radiation thermometer thermometric, fusion process pours into a mould after completing in vacuum chamber, cast
Carrying out gas pressurized, pressure is maintained at 1.0MPa simultaneously, and pouring temperature controls at 1200 DEG C, the demoulding after casting complete；Finally will
Ingot casting loading carries out solid-solution and aging heat treatment, and solid solubility temperature is 950 DEG C, is incubated 1 hour, quick water-cooled；Aging temp is 450
DEG C, it is incubated 4h, air cooling.Alloy after heat treatment is carried out performance test:
Claims (7)
1. a sliver end ring high-strength highly-conductive Cu-Cr-Zr-RE alloy, it is characterised in that include Cu, Cr, Zr and RE, described
Each material ratio in terms of wt% is: Cr 0.5-1.2, Zr 0.01-0.5, rare earth element 0-0.5, and surplus is copper or for copper and not
Evitable impurity element.
A kind of sliver end ring high-strength highly-conductive Cu-Cr-Zr-RE alloy the most according to claim 1, it is characterised in that institute
Stating rare earth element is one or both in cerium, lanthanum.
A kind of sliver end ring high-strength highly-conductive Cu-Cr-Zr-RE alloy the most according to claim 1, it is characterised in that former
Material selection 99.95% cathode copper, pure Cr plate, Zr and rare earth element.
4. the sliver end ring preparation method of high-strength highly-conductive Cu-Cr-Zr-RE alloy, it is characterised in that enter according to the following steps
OK:
1) dispensing: according to Cu-Cr-Zr-RE alloy each component requirements dispensing；
2) vacuum melting+compression solidification: the raw material prepared is put into vacuum induction melting furnace and carries out melting, charging sequence is
Cathode copper, Cr plate, Zr and rare earth intermediate alloy, smelting temperature is 1200-1300 DEG C, and vacuum is maintained at 10-2Below MPa, molten
After refining process completes, pouring into a mould in vacuum chamber, carry out gas pressurized while cast, pressure is maintained at 0.5-1.0MPa,
Pouring temperature controls at 1150-1200 DEG C, the demoulding after casting complete；
3) heat treatment: ingot casting loading step (2) obtained carries out solid-solution and aging heat treatment, and solid solubility temperature is 850-980 DEG C, protects
Temperature 1-2 hour, quick water-cooled；Aging temp is 300-600 DEG C, is incubated 2-6h, air cooling.
The preparation method of a kind of sliver end ring high-strength highly-conductive Cu-Cr-Zr-RE alloy the most according to claim 4, it is special
Levy and be, described 1), in step, raw material selection 99.95% cathode copper, pure Cr plate, Zr and rare earth element are with intermediate alloy form
Add.
The preparation method of a kind of sliver end ring high-strength highly-conductive Cu-Cr-Zr-RE alloy the most according to claim 4, it is special
Levy and be, described 2) before step melting, raw material is carried out skin drying, degreasing and rust removal pretreatment.
The preparation method of a kind of sliver end ring high-strength highly-conductive Cu-Cr-Zr-RE alloy the most according to claim 4, it is special
Levy and be, described 2) in step before adding Zr and rare earth element, liquation to be carried out sufficient deoxidation, degasification, slagging-off pre-
Process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610401790.3A CN106086508A (en) | 2016-06-11 | 2016-06-11 | A kind of sliver end ring high-strength highly-conductive Cu Cr Zr RE alloy and preparation method thereof |
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|---|---|---|---|
| CN201610401790.3A CN106086508A (en) | 2016-06-11 | 2016-06-11 | A kind of sliver end ring high-strength highly-conductive Cu Cr Zr RE alloy and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521229A (en) * | 2016-11-24 | 2017-03-22 | 西安理工大学 | Method for preparing rare-earth-containing Cu-Cr-Zr alloy by adopting Cu-La intermediate alloy |
| CN106756208A (en) * | 2016-12-07 | 2017-05-31 | 山东大学 | A kind of copper chromium zirconium lanthanum alloy |
| CN110408812A (en) * | 2019-07-11 | 2019-11-05 | 陕西斯瑞新材料股份有限公司 | A kind of preparation method for squirrel-cage asynchronism traction electric machine end ring |
| CN111519061A (en) * | 2019-02-01 | 2020-08-11 | 内蒙金属材料研究所 | Rare earth doped Cu-Cr-Zr alloy material and preparation method and application thereof |
| CN111621665A (en) * | 2020-06-16 | 2020-09-04 | 西安斯瑞先进铜合金科技有限公司 | Preparation method of copper-zirconium end ring material for train asynchronous motor |
| CN114032414A (en) * | 2021-11-17 | 2022-02-11 | 湖南稀土金属材料研究院有限责任公司 | Modified copper-chromium alloy and preparation method and application thereof |
-
2016
- 2016-06-11 CN CN201610401790.3A patent/CN106086508A/en active Pending
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| 历长云等: "《特种铸造》", 31 May 2013 * |
| 梁群昌等: "差压铸造在我国的发展及应用", 《热加工工艺》 * |
| 潘振亚等: "Cu-0.81Cr-0.12Zr-0.05La-0.05Y合金形变与热处理工艺优化", 《材料热处理学报》 * |
| 邓至谦等: "《铜及铜合金物理冶金基础》", 31 December 2010, 中南大学出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521229A (en) * | 2016-11-24 | 2017-03-22 | 西安理工大学 | Method for preparing rare-earth-containing Cu-Cr-Zr alloy by adopting Cu-La intermediate alloy |
| CN106521229B (en) * | 2016-11-24 | 2018-07-06 | 西安理工大学 | The method that the Cu-Cr-Zr alloy containing rare earth is prepared using Cu-La intermediate alloys |
| CN106756208A (en) * | 2016-12-07 | 2017-05-31 | 山东大学 | A kind of copper chromium zirconium lanthanum alloy |
| CN111519061A (en) * | 2019-02-01 | 2020-08-11 | 内蒙金属材料研究所 | Rare earth doped Cu-Cr-Zr alloy material and preparation method and application thereof |
| CN110408812A (en) * | 2019-07-11 | 2019-11-05 | 陕西斯瑞新材料股份有限公司 | A kind of preparation method for squirrel-cage asynchronism traction electric machine end ring |
| CN111621665A (en) * | 2020-06-16 | 2020-09-04 | 西安斯瑞先进铜合金科技有限公司 | Preparation method of copper-zirconium end ring material for train asynchronous motor |
| CN114032414A (en) * | 2021-11-17 | 2022-02-11 | 湖南稀土金属材料研究院有限责任公司 | Modified copper-chromium alloy and preparation method and application thereof |
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Application publication date: 20161109 |
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