CN110527867A - A kind of low tin-copper alloy and preparation method thereof that anaerobic is copper-based - Google Patents
A kind of low tin-copper alloy and preparation method thereof that anaerobic is copper-based Download PDFInfo
- Publication number
- CN110527867A CN110527867A CN201910871256.2A CN201910871256A CN110527867A CN 110527867 A CN110527867 A CN 110527867A CN 201910871256 A CN201910871256 A CN 201910871256A CN 110527867 A CN110527867 A CN 110527867A
- Authority
- CN
- China
- Prior art keywords
- copper
- furnace
- anaerobic
- tough cathode
- casting
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 77
- 239000010949 copper Substances 0.000 title claims abstract description 77
- 229910000597 tin-copper alloy Inorganic materials 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 238000005266 casting Methods 0.000 claims abstract description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000001301 oxygen Substances 0.000 claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 230000006698 induction Effects 0.000 claims abstract description 7
- 238000003723 Smelting Methods 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 6
- 229910000679 solder Inorganic materials 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 11
- 239000003610 charcoal Substances 0.000 claims description 10
- 238000005253 cladding Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 5
- 235000019504 cigarettes Nutrition 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 5
- 238000002425 crystallisation Methods 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 230000002180 anti-stress Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 229910000906 Bronze Inorganic materials 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 229910052714 tellurium Inorganic materials 0.000 description 3
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 3
- 101100136092 Drosophila melanogaster peng gene Proteins 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical class [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C22C9/02—Alloys based on copper with tin as the next major constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of low tin-copper alloys and preparation method thereof that anaerobic is copper-based, comprising the following steps: (1), selects A grades of tough cathode；(2) tough cathode is preheated by the preheating furnace that temperature is 450 DEG C, guarantees that tough cathode surface keeps drying；(3) the above-mentioned tough cathode come out of the stove is put into closed channel induction furnace melting again, guarantees the oxygen content in copper liquid in 5-20PPM；(4) copper liquid in smelting furnace is transferred to holding furnace, it is ensured that the oxygen content in copper liquid is in≤10PPM；(5) solder is quantitatively added in cup；(6) copper liquid flows into mould casting by pouring pipe.The beneficial effects of the invention are as follows the Sn by adding 0.1%~0.2% content to be added into oxygen-free copper, using the copper-based low tin-copper alloy ingot casting of closed channel induction furnace melting and vertical Total continuity foundry engieering production anaerobic, the finished product made intensity with higher, heat resistance, anti-stress relaxation properties and high conductivity.
Description
Technical field
The present invention relates to copper alloy field, more particularly, to power semiconductor, cable connector, battery fast charge,
The copper-based low tin-copper alloy and preparation method thereof of the anaerobic of connector, vehicle-mounted fuse and relay.
Background technique
Copper has good conductive, thermally conductive, anti-corrosion and solderable etc. excellent performances, is a kind of widely used metal material,
It is one of main selection of conductive material.It is impure in copper all to influence conductivity.Oxygen (150-300ppm) in copper is formed with copper
Crisp phasic property oxide Cu2O, not only reduces the conductivity of copper, but also copper is made to generate Hydrogen Brittleness Phenomena.Thus external conductive material is wide
It is general to apply oxygen-free copper.The conductivity of oxygen-free copper is only 98%IACS up to 102%IACS(red copper).Though but oxygen-free copper conductivity is very
Height, but intensity is not high, and softening temperature is low (230 DEG C), to research and develop anaerobic acid bronze alloy thus, and with intensity in acquisition, height is led
The conductive material of electricity, meets the needs of domestic market.
Chinese invention patent publication number CN103938019A discloses anaerobic acid bronze alloy and its production technology, and anaerobic is copper-based
Alloy is that tellurium, manganese , He peng are added in copper, and tellurium additional amount is 0.05w%-0.2w%；The additive amount of Mn is 0.01w%-0.02w%；B
Additional amount is 0.05W%-0.10W%.Its production technology includes cathode copper cleaning, shearing, melts, keeps the temperature and draw bar production stage,
In fusing, incubation step, additive is added when copper meltwater temperature is 2050 DEG C -2100 DEG C.One layer is covered on copper melt face
Ash wood completely cuts off oxygen in air.With green mock mechanical stirring or electromagnetic wand electromagnetic agitation, it is uniformly mixed molten liquid.Mixing is stirred
Mixing the time is 20-30min, which is to change the indices of oxygen-free copper by adding tellurium, manganese , He peng, although conductivity
It is improved, but tensile strength, elongation percentage and softening temperature are all unsatisfactory for the requirement of middle intensity, highly conductive copper material.
Summary of the invention
The technical problem to be solved by the present invention is to tensile strength, elongation percentage and the softening temperatures of existing anaerobic acid bronze alloy
Index is not able to satisfy the requirement of middle intensity, highly conductive copper material, provide thus a kind of low tin-copper alloy that anaerobic is copper-based and its
Preparation method.
The technical scheme is that a kind of production technology for casting for the low tin-copper alloy that anaerobic is copper-based, it includes following
Step: (1), A grade of tough cathode is selected, it is ensured that impurity element contained therein is within the scope of defined；(2), by tough cathode
It is preheated by the preheating furnace that temperature is 400 DEG C -500 DEG C, guarantees that tough cathode surface keeps drying；(3), again by the above-mentioned yin come out of the stove
Pole copper is put into closed channel induction furnace melting, calcines charcoal cladding thickness 100-150mm, and furnace bottom is passed through N2With CO gas, protect
Fusing furnace atmosphere is held in positive pressure, guarantees the oxygen content in copper liquid in 5-20PPM；(4), the copper liquid in smelting furnace is transferred to heat preservation
Furnace, calcines charcoal cladding thickness 100-150mm, and furnace bottom is passed through N2With CO gas, keeping fusing furnace atmosphere is in positive pressure, it is ensured that copper
Oxygen content in liquid is in≤10PPM；(5), the Sn of 0.06kg is added by feeder rationing solder per minute in cup,
Sn content is controlled in 0.10%~0.20% range, is cast after sampling analysis is qualified；(6), copper liquid flows into crystallization by pouring pipe
Device casting, crystallizer are protected using cigarette ash, and vertical Total continuity casting, casting speed is controlled in 60-80mm/min, hydraulic pressure control
In 80~130Kpa.
A kind of low tin-copper alloy that anaerobic is copper-based, it is prepared with above scheme.
The beneficial effects of the invention are as follows the Sn by adding 0.1%~0.2% content to be added into oxygen-free copper, and use is closed
Channel induction furnace melting and vertical Total continuity foundry engieering produce the copper-based low tin-copper alloy ingot casting of anaerobic, the oxygen content in copper liquid
Control in 20ppm hereinafter, minimum can be controlled in 5ppm, the finished product made intensity with higher, heat resistance, proof stress
Relaxation properties and high conductivity.
Specific embodiment
Below with reference to embodiment, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Those of ordinary skill in the art's every other embodiment without making creative work, belongs to protection of the invention
Range.
Embodiment 1: a kind of production technology for casting for the low tin-copper alloy that anaerobic is copper-based, it is the following steps are included: select A grades
Tough cathode, it is ensured that impurity element contained therein is within the scope of defined；It (2), is 400 DEG C by temperature by tough cathode
Preheating furnace preheating, guarantee tough cathode surface keep drying；(3), being again put into the above-mentioned tough cathode come out of the stove closed has core sense
Furnace melting is answered, charcoal cladding thickness 100mm is calcined, furnace bottom is passed through N2With CO gas, keeping fusing furnace atmosphere is in positive pressure, is guaranteed
Oxygen content in copper liquid is in 10PPM；(4), the copper liquid in smelting furnace is transferred to holding furnace, calcines charcoal cladding thickness 100mm, furnace
Bottom is passed through N2With CO gas, keeping fusing furnace atmosphere is in positive pressure, it is ensured that the oxygen content in copper liquid is in≤10PPM；(5), preceding
Room the Sn of 0.06kg is added, for control Sn content 0.10%, sampling analysis is qualified by feeder rationing solder per minute
After cast；(6), copper liquid flows into mould casting by pouring pipe, and crystallizer is protected using cigarette ash, vertical Total continuity casting, casting
Speed control is made in 60mm/min, hydraulic pressure control is in 80Kpa.
Embodiment 2: a kind of production technology for casting for the low tin-copper alloy that anaerobic is copper-based, it is characterized in that: it includes following step
It is rapid: to select A grades of tough cathode, it is ensured that impurity element contained therein is within the scope of defined；(2), tough cathode is passed through into temperature
Degree preheats for 450 DEG C of preheating furnace, guarantees that tough cathode surface keeps drying；(3), the above-mentioned tough cathode come out of the stove is put into again closed
Formula channel induction furnace melting, calcines charcoal cladding thickness 125mm, and furnace bottom is passed through N2With CO gas, holding fusing furnace atmosphere is in
Positive pressure guarantees the oxygen content in copper liquid in 15PPM；(4), the copper liquid in smelting furnace is transferred to holding furnace, calcining charcoal covering is thick
125mm is spent, furnace bottom is passed through N2With CO gas, keeping fusing furnace atmosphere is in positive pressure, it is ensured that oxygen content in copper liquid≤
10PPM；(5), the Sn of 0.06kg is added by feeder rationing solder in cup per minute, controls Sn content 0.15%
In range, cast after sampling analysis is qualified；(6), copper liquid flows into mould casting by pouring pipe, and crystallizer is protected using cigarette ash
Shield, vertical Total continuity casting, casting speed are controlled in 70mm/min, and hydraulic pressure control is in 100Kpa.
Embodiment 3: a kind of production technology for casting for the low tin-copper alloy that anaerobic is copper-based, it is characterized in that: it includes following step
It is rapid: to select A grades of tough cathode, it is ensured that impurity element contained therein is within the scope of defined；(2), tough cathode is passed through into temperature
Degree preheats for 500 DEG C of preheating furnace, guarantees that tough cathode surface keeps drying；(3), the above-mentioned tough cathode come out of the stove is put into again closed
Formula channel induction furnace melting, calcines charcoal cladding thickness 150mm, and furnace bottom is passed through N2With CO gas, holding fusing furnace atmosphere is in
Positive pressure guarantees the oxygen content in copper liquid in 20PPM；(4), the copper liquid in smelting furnace is transferred to holding furnace, calcining charcoal covering is thick
150mm is spent, furnace bottom is passed through N2With CO gas, keeping fusing furnace atmosphere is in positive pressure, it is ensured that oxygen content in copper liquid≤
10PPM；(5), the Sn of 0.06kg is added, control Sn content exists by feeder rationing solder per minute in cup
0.20%, it is cast after sampling analysis is qualified；(6), copper liquid flows into mould casting by pouring pipe, and crystallizer is protected using cigarette ash,
Vertical Total continuity casting, casting speed are controlled in 80mm/min, and hydraulic pressure control is in 130Kpa.
The copper-based low tin-copper alloy of anaerobic prepared by the present invention and red copper and the various performance parameters of oxygen-free copper are compared, such as
Following table:
| Alloy | State | Tensile strength/MPa | Elongation percentage/% | Softening temperature/DEG C | Conductivity/%IACS |
| Red copper (oxygen content 250ppm) | EH | 300 | 7 | 230 | 98 |
| Oxygen-free copper (oxygen content 10ppm) | EH | 300 | 7.5 | 220 | 102 |
| The copper-based low tin-copper alloy of anaerobic | EH | 420 | 4.5 | 425 | 90 |
As can be seen from the table, for the copper material of EH state, the copper-based low tin-copper alloy of anaerobic compares red copper and oxygen-free copper, tension
Strength enhancing 120MPa, softening temperature promote 200 DEG C or so, and conductivity is reduced only by 10%IACS or so, reached in it is strong
The requirement of degree, highly conductive copper material.
Sn line additional amount is a key link of alloy production, and anaerobic acid bronze alloy is that addition 0.1%~0.2% contains in copper
In the Sn of amount, Sn copper in solid solution, the intensity, heat resistance, anti-stress relaxation properties of material are promoted, while having 85~90IACS%'s
Conductivity.Simultaneously it is noted that the control of Oxygen in Oxygen-Free Copper content then easily reacts generation as contained higher oxygen in copper liquid with Sn
SnO causes skin effect phenomenon in subsequent Strip process, influences band quality, the oxygen content in copper liquid to control≤
10PPM controls another key link that oxygen content and stability in copper liquid are then alloy castings.
The copper-based low tin-copper alloy of anaerobic intensity with higher, heat resistance, anti-stress relaxation properties and high conduction
Rate is widely used in power semiconductor, the components such as cable connector, battery fast charge, connector, vehicle-mounted fuse and relay
Field.Demand of the client to high-quality copper-tin alloy is met, import substitutes realize industrialization production.
Claims (2)
1. a kind of production technology for casting for the low tin-copper alloy that anaerobic is copper-based, it is characterized in that: it is the following steps are included: (1) selects A
The tough cathode of grade, it is ensured that impurity element contained therein is within the scope of defined；It (2), is 400 by temperature by tough cathode
DEG C -500 DEG C of preheating furnace preheating, guarantees that tough cathode surface keeps drying；(3), the above-mentioned tough cathode come out of the stove is put into again closed
Formula channel induction furnace melting, calcines charcoal cladding thickness 100-150mm, and furnace bottom is passed through N2With CO gas, gas in melting furnace is kept
Atmosphere is in positive pressure, guarantees the oxygen content in copper liquid in 5-20PPM；(4), the copper liquid in smelting furnace is transferred to holding furnace, calcines charcoal
Cladding thickness 100-150mm, furnace bottom are passed through N2With CO gas, keeping fusing furnace atmosphere is in positive pressure, it is ensured that the oxygen in copper liquid contains
Amount is in≤10PPM；(5), the Sn of 0.06kg is added per minute, controls Sn content by feeder rationing solder in cup
In 0.10%~0.20% range, cast after sampling analysis is qualified；(6), copper liquid flows into mould casting, crystallization by pouring pipe
Device is protected using cigarette ash, and vertical Total continuity casting, casting speed is controlled in 60-80mm/min, and hydraulic pressure control is in 80~130Kpa
It is interior.
2. a kind of low tin-copper alloy that anaerobic is copper-based, it is characterized in that: it is with a kind of copper-based low of anaerobic as described in claim 1
The production technology for casting of gun-metal is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910871256.2A CN110527867A (en) | 2019-09-16 | 2019-09-16 | A kind of low tin-copper alloy and preparation method thereof that anaerobic is copper-based |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910871256.2A CN110527867A (en) | 2019-09-16 | 2019-09-16 | A kind of low tin-copper alloy and preparation method thereof that anaerobic is copper-based |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110527867A true CN110527867A (en) | 2019-12-03 |
Family
ID=68668789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910871256.2A Pending CN110527867A (en) | 2019-09-16 | 2019-09-16 | A kind of low tin-copper alloy and preparation method thereof that anaerobic is copper-based |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110527867A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02204919A (en) * | 1989-02-01 | 1990-08-14 | Furukawa Electric Co Ltd:The | Conductor for coil |
| EP2386668A1 (en) * | 2010-05-12 | 2011-11-16 | KME Germany AG & Co. KG | Product with an anti-microbial surface layer and method for producing same |
| CN102990029A (en) * | 2012-12-25 | 2013-03-27 | 富威科技（吴江）有限公司 | Process for producing anaerobic copper billets in upward continuous casting method |
| CN103464709A (en) * | 2013-08-19 | 2013-12-25 | 江苏兴荣美乐铜业有限公司 | Large-diameter high-purity oxygen-free copper cast blank horizontal continuous casting process and connected furnace |
| CN106001467A (en) * | 2016-07-13 | 2016-10-12 | 江苏藤仓亨通光电有限公司 | Preparing method of ultralow tin-copper tin contact line |
| CN107723504A (en) * | 2017-10-09 | 2018-02-23 | 中国西电集团公司 | A kind of contact line of bronze in use for electrified railroad in and its method for continuous production |
-
2019
- 2019-09-16 CN CN201910871256.2A patent/CN110527867A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02204919A (en) * | 1989-02-01 | 1990-08-14 | Furukawa Electric Co Ltd:The | Conductor for coil |
| EP2386668A1 (en) * | 2010-05-12 | 2011-11-16 | KME Germany AG & Co. KG | Product with an anti-microbial surface layer and method for producing same |
| CN102990029A (en) * | 2012-12-25 | 2013-03-27 | 富威科技（吴江）有限公司 | Process for producing anaerobic copper billets in upward continuous casting method |
| CN103464709A (en) * | 2013-08-19 | 2013-12-25 | 江苏兴荣美乐铜业有限公司 | Large-diameter high-purity oxygen-free copper cast blank horizontal continuous casting process and connected furnace |
| CN106001467A (en) * | 2016-07-13 | 2016-10-12 | 江苏藤仓亨通光电有限公司 | Preparing method of ultralow tin-copper tin contact line |
| CN107723504A (en) * | 2017-10-09 | 2018-02-23 | 中国西电集团公司 | A kind of contact line of bronze in use for electrified railroad in and its method for continuous production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102925746B (en) | High-performance Cu-Ni-Si system copper alloy, and preparation method and processing method thereof | |
| CN104946972B (en) | Steel disc strip for diode lead and production technology of steel disc strip | |
| CN101886198A (en) | High-conductivity aluminum alloy material for cable and preparation method thereof | |
| CN102329999A (en) | Manufacture method of electroconductive aluminum alloy section | |
| CN102851527B (en) | A copper-silver-magnesium alloy contact wire and its preparation method | |
| CN101429601A (en) | Tellurium copper alloy material for electric power industry and method for producing the same | |
| CN103352140A (en) | High-strength high-conductivity heatproof copper alloy wire rod and preparation method thereof | |
| CN103146943A (en) | Red impure copper refining agent and preparation method thereof | |
| CN103060585A (en) | Smelting method for Al-Mg-Mn-Cu-Ti aluminum alloy | |
| CN103394826B (en) | A kind of process reducing extruded rod defect | |
| CN103540789B (en) | Cu-Mg-Te-P alloy bar specially used for crystallizer and thermal treatment process of Cu-Mg-Te-P alloy bar | |
| CN104911408A (en) | Hard aluminum conductor filament and preparation method thereof | |
| CN103757484A (en) | High tensile strength aluminum alloy wire rod and preparation method thereof | |
| CN103725918A (en) | Rare earth copper alloy wire and preparation method thereof | |
| CN108823428A (en) | A kind of preparation method of oxygen-free copper bar | |
| CN101798650B (en) | Low-gas content metal manganese ingot and preparation method thereof | |
| CN110527867A (en) | A kind of low tin-copper alloy and preparation method thereof that anaerobic is copper-based | |
| CN103014385A (en) | Processing technology for high-abrasion-resistance aluminium alloy foaming mould casting | |
| CN111809074B (en) | Lanthanum-carbon-magnesium composite material, tellurium-copper alloy material and preparation method thereof | |
| CN115679136A (en) | Copper-chromium-zirconium alloy ingot and preparation method and application thereof | |
| CN113122753A (en) | Micro-alloyed copper alloy cable material and preparation method thereof | |
| CN101831577A (en) | Aluminum magnesium alloy | |
| CN110408804A (en) | A kind of metal alloy conducting wire core production process | |
| CN112951474A (en) | Aluminum alloy conductor for aerospace cable | |
| CN110904357A (en) | Method for processing special-shaped copper pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191203 |
|
| WD01 | Invention patent application deemed withdrawn after publication |