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
- Publication number
- 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
- Authority
- CN
- China
- Prior art keywords
- alloy
- end ring
- conductive
- sliver end
- strength highly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 229910000691 Re alloy Inorganic materials 0.000 title claims abstract description 15
- 229910019580 Cr Zr Inorganic materials 0.000 title abstract description 3
- 238000002844 melting Methods 0.000 claims abstract description 24
- 230000008018 melting Effects 0.000 claims abstract description 24
- 239000000956 alloy Substances 0.000 claims abstract description 23
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 20
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 18
- 238000005266 casting Methods 0.000 claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000007711 solidification Methods 0.000 claims abstract description 7
- 230000008023 solidification Effects 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 238000003723 Smelting Methods 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 13
- 230000032683 aging Effects 0.000 claims description 10
- 230000006698 induction Effects 0.000 claims description 6
- 239000006104 solid solution Substances 0.000 claims description 6
- 238000005238 degreasing Methods 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000007872 degassing Methods 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 2
- 150000002910 rare earth metals Chemical class 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005204 segregation Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 229910052786 argon Inorganic materials 0.000 abstract description 2
- 238000006392 deoxygenation reaction Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000005275 alloying Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000007499 fusion processing Methods 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 229910017526 Cu-Cr-Zr Inorganic materials 0.000 description 3
- 229910017810 Cu—Cr—Zr Inorganic materials 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910019817 Cr—Zr Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
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.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106086508A true CN106086508A (en) | 2016-11-09 |
Family
ID=57228238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610401790.3A Pending 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106086508A (en) |
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
Non-Patent Citations (4)
| Title |
|---|
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106086508A (en) | A kind of sliver end ring high-strength highly-conductive Cu Cr Zr RE alloy and preparation method thereof | |
| KR102763513B1 (en) | Non-vacuum down-drawing continuous casting production process of copper-iron alloy slab ingots | |
| CN105132772B (en) | Low-cost non-rare-earth type high-strength magnesium alloy and preparing method thereof | |
| CN106555076A (en) | A kind of resistance to 650 DEG C of high-temperature titanium alloy materials and preparation method thereof | |
| CN104889401A (en) | Method for preparing CuCr25 electrical contact | |
| CN105543540A (en) | Copper chromium zirconium alloy and preparing method thereof | |
| CN101709401B (en) | Boron, silver, rare earth element added Cu-Cr in-situ composite material and preparation method thereof | |
| CN106756372B (en) | A kind of high-performance aluminizing-preparation method of rare earth alloy and its product of preparation | |
| CN107586977B (en) | A kind of preparation method of high-strength and high-conductivity copper alloy rod | |
| CN100557063C (en) | Solution and aging treatment method for cold drawing of Cu-Ag alloy | |
| CN109234552B (en) | A method for preparing high-Cu content Al-Cu alloy by solidification under pressure | |
| CN114540729A (en) | Method for preparing alloy ingot for copper-chromium contact by adopting suspension smelting down-drawing process | |
| CN108950271B (en) | Chromium-zirconium-copper alloy and preparation method thereof | |
| CN102392205A (en) | Method for preparing precision copper part | |
| CN101871068B (en) | A kind of high-strength high-plasticity magnesium alloy containing tin and aluminum and preparation method thereof | |
| CN103556016A (en) | Moderate-intensity high-conductivity electrical aluminum wire material and preparation method thereof | |
| CN101215681A (en) | A Solution Aging Process for Improving Hardness and Electrical Conductivity of Cu-Ag Alloy | |
| CN103820666A (en) | Preparation method of fine-grain copper chromium alloy | |
| CN105154709B (en) | High chrome copper material and preparation method thereof | |
| CN104264082B (en) | A kind of nitrogen doped toughened metallic glass composite material and preparation method thereof | |
| CN107217204B (en) | A kind of preparation method of Fe-Mn-Al systems alloy | |
| CN113897567A (en) | Homogenization thermomechanical treatment method for rapidly refining and homogenizing cast aluminum-lithium alloy | |
| CN108118176B (en) | Copper-based amorphous alloy for high-speed railway contact line and preparation process thereof | |
| CN106756207A (en) | A kind of short process making method of high-strength highly-conductive deformation Cu Cr Ag in-situ composites | |
| CN102021359B (en) | Cu-Ni-Si alloy with high Ni and Si content and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |
|
| RJ01 | Rejection of invention patent application after publication |