CN104357707A - Novel copper alloy and preparation method thereof - Google Patents
Novel copper alloy and preparation method thereof Download PDFInfo
- Publication number
- CN104357707A CN104357707A CN201410688393.XA CN201410688393A CN104357707A CN 104357707 A CN104357707 A CN 104357707A CN 201410688393 A CN201410688393 A CN 201410688393A CN 104357707 A CN104357707 A CN 104357707A
- Authority
- CN
- China
- Prior art keywords
- copper alloy
- temperature
- refining
- time
- alloy
- 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
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
-
- 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
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- 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)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Conductive Materials (AREA)
Abstract
The invention provides a novel copper alloy, which comprises the following elements in percentage by weight: 0.05-0.07% of Yb, 0.035-0.045% of Ni, 0.07-0.09% of Ti, 1.02-1.03% of Mo, 0.004-0.009% of Ta, 0.012-0.014% of Rh, 0.008-0.01% of Ba, 0.021-0.029% of Th, 0.1-0.2% of Er, 0.15-0.25% of Tb, 0.07-0.09% of Lu, 0.12-0.17% of In, 0.05-0.09% of Co, 0.07-0.1% of Cr, 0.1-0.2% of Be, 0.5-0.7% of Hf and the balance of Cu. The copper alloy has higher hardness and toughness and high in stability, the preparation technology is simple and convenient, and the cost is low.
Description
Technical field
The invention belongs to copper alloy field, especially a kind of Novel copper alloy and preparation method thereof.
Background technology
Fine copper density is 8.96, and fusing point is 1083 DEG C, has excellent Dao electricity ﹑ Dao Re ﹑ ductility and solidity to corrosion.And with fine copper for matrix adds the alloyed copper alloy that one or more other elements form.All the time all by as the constituent material of junctor, terminal, rly., spring, switch etc. being used in electric component, electronic unit, trolley part, communication device, electronics/electric device etc.But, along with the miniaturization of this device in recent years, lighting and high performance, also require very harshly to improve characteristic to the constituent material being used in these, such as, the spring contact portion of junctor uses very thin plate, in order to seek thin-walled property, the high balance with high strength and percentage of elongation and intensity is required to the high strength copper alloy forming this very thin plate, require productivity further, economy is excellent, and electroconductibility, (anticorrosion stress-resistant breaks erosion resistance, Dezincification corrosion resistant and resistance to migration), stress relaxation characteristics, weldabilities etc. are upper no problem, but current copper alloy on the market does not generally also reach or there is various defect problem.Therefore, improving copper alloy intensity and make it have good over-all properties, is the focus of Novel copper alloy exploitation, and high strength copper alloy exploitation is simultaneously significant to the Application Areas expanding copper alloy.
Summary of the invention
Technical problem to be solved by this invention is to provide the Novel copper alloy of a kind of tensile strength, yield strength, electric conductivity, bendability, stress relaxation characteristics and anticorrosion stress-resistant disruptiveness excellence, this Novel copper alloy simultaneously, preparation technology is simple and easy to do, thus the input decreasing manpower and materials reaches the economy excellence reduced costs.
For reaching this object, the present invention by the following technical solutions:
A kind of Novel copper alloy, contain according to weight percent content: contain according to weight percent content: Yb:0.05-0.07%, Ni:0.035-0.045%, Ti:0.07-0.09%, Mo:1.02-1.03%, Ta:0.004-0.009%, Rh:0.012-0.014%, Ba:0.008-0.01%, Th:0021-0.029%, Er:0.1-0.2%, Tb:0.15-0.25%, Lu:0.07-0.09%, In:0.12-0.17%, Co:0.05-0.0.09%, Cr:0.07-0.1%, Be:0.1-0.2%, Hf:0.5-0.7%, surplus is Cu.
Another technical problem that the present invention will solve is to provide a kind of preparation technology of Novel copper alloy.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: comprise the following steps:
(1) dry: take by copper alloy component content proportioning the moisture content that each component raw material carries out drying to remove in raw material, bake out temperature is 100-110 DEG C, and drying time is 48h;
(2) melting: molten alloy in main frequency furnace, furnace temperature is adjusted to after 300 DEG C of maintenance 5min drop into copper alloy each component raw material and heats up gradually, heat-up rate controls at 5 DEG C/min, treat that alloy raw material starts fusing, adopt rice bran to make insulating covering agent, be sprinkled into rice bran amount and be advisable, after temperature rises to 1000-1200 DEG C with covering alloy liquid surface, insulation 20min, obtains copper alloy solution;
(3) refining: make smelting furnace be warming up to 1300-1500 DEG C of alloy and carry out refining, add while stirring the calcium carbonate of 50%, the salt of 40% and 10% silica sand carry out refining, refining time is 20-30min, after refining is complete, at 800-900 DEG C, insulation leaves standstill 10-15min, carries out dragging for Slag treatment;
(4) cast: by mould and die preheating to after 300-400 DEG C, the copper alloy solution of refining is poured in casting mould at 1000-1200 DEG C, naturally cools to room temperature and obtain foundry goods; Cast gauge is Ф 60cm, length >=400 cm;
(5) hot rolling: foundry goods is heated to 900-1000 DEG C of insulation 45min, then divide three passages to carry out hot rolling, breaking down temperature is 950-1000 DEG C, and reduction in pass is 10%; It is 800-900 DEG C that secondary road rolls temperature, and reduction in pass is 8%; Finishing temperature control at 700-780 DEG C, quick online water-cooled after last passage hot rolling, speed of cooling is not less than 5 DEG C/sec;
(6) cold rolling: the copper alloy after heat being pricked carries out cold rolling, and cold rolling pass draught is 56%-60% for the first time, and annealing time is 2h, and annealing temperature is 500-600 DEG C; Second time cold rolling pass draught is 30%-50%, and annealing time is 1h, and annealing temperature is 400-500 DEG C; Third time, cold rolling pass draught was 20%-30%, and do not need annealing after rolling, naturally cooling is Novel copper alloy of the present invention.
Further, contain according to weight percent content: contain according to weight percent content: Yb:0.05%, Ni:0.035%, Ti:0.07%, Mo:1.02%, Ta:0.004%, Rh:0.012%, Ba:0.008%, Th:0021%, Er:0.1%, Tb:0.15%, Lu:0.07%, In:0.12%, Co:0.05%, Cr:0.07%, Be:0.1%, Hf:0.5%, surplus is Cu.
The beneficial effect of a kind of Novel copper alloy of the present invention and preparation technology thereof is: the collocation adopting multiple components and rational proportion, add and preparation technology makes gained copper alloy have excellent tensile strength, yield strength, electric conductivity, bendability, stress relaxation characteristics and anticorrosion stress-resistant disruptiveness through the processing temperature of test of many times and deflection, this Novel copper alloy simultaneously, preparation technology is simple and easy to do, thus the input decreasing manpower and materials reaches the economy excellence reduced costs.
Embodiment
For feature of the present invention, technique means and the specific purposes reached, function can be understood further, with embodiment, the present invention is described in further detail below.
embodiment 1
A kind of Novel copper alloy, contains according to weight percent content: Yb:0.05%, Ni:0.035%, Ti:0.07%, Mo:1.02%, Ta:0.004%, Rh:0.012%, Ba:0.008%, Th:0021%, Er:0.1%, Tb:0.15%, Lu:0.07%, In:0.12%, Co:0.05%, Cr:0.07%, Be:0.1%, Hf:0.5-%, surplus is Cu.
The making processes of described a kind of Novel copper alloy preparation technology is as follows:
(1) dry: take by copper alloy component content proportioning the moisture content that each component raw material carries out drying to remove in raw material, bake out temperature is 100 DEG C, and drying time is 48h; Charcoal bit is adopted to make insulating covering agent;
(2) melting: molten alloy in main frequency furnace, furnace temperature is adjusted to after 300 DEG C of maintenance 5min drop into copper alloy each component raw material and heats up gradually, heat-up rate controls at 5 DEG C/min, treat that alloy raw material starts fusing, adopt rice bran to make insulating covering agent, be sprinkled into rice bran amount and be advisable, after temperature rises to 1000 DEG C with covering alloy liquid surface, insulation 20min, obtains copper alloy solution;
(3) refining: make smelting furnace be warming up to 1300 DEG C of alloys and carry out refining, add while stirring the calcium carbonate of 50%, the salt of 40% and 10% silica sand carry out refining, refining time is 20min, and after refining is complete, at 800 DEG C, insulation leaves standstill 10min, carries out dragging for Slag treatment;
(4) cast: by after mould and die preheating to 300 DEG C, the copper alloy solution of refining is poured in casting mould at 1000 DEG C, naturally cools to room temperature and obtain foundry goods; Cast gauge is Ф 60cm, length >=400 cm;
(5) hot rolling: foundry goods is heated to 900 DEG C of insulation 45min, then divide three passages to carry out hot rolling, breaking down temperature is 950 DEG C, and reduction in pass is 10%; It is 800 DEG C that secondary road rolls temperature, and reduction in pass is 8%; Finishing temperature control at 700 DEG C, quick online water-cooled after last passage hot rolling, speed of cooling is not less than 5 DEG C/sec;
(6) cold rolling: the copper alloy after heat being pricked carries out cold rolling, and cold rolling pass draught is 56% for the first time, and annealing time is 2h, and annealing temperature is 500 DEG C; Second time cold rolling pass draught is 30%, and annealing time is 1h, and annealing temperature is 400 DEG C; Third time, cold rolling pass draught was 20%, and do not need annealing after rolling, naturally cooling is Novel copper alloy of the present invention.
embodiment 2:
A kind of Novel copper alloy, contains according to weight percent content: contain according to weight percent content: Yb:0.06%, Ni:0.04%, Ti:0.08%, Mo:1.025%, Ta:0.006%, Rh:0.013%, Ba:0.009%, Th:0.025%, Er:0.15%, Tb:0.2%, Lu:0.08%, In:0.15%, Co:0.07%, Cr:0.08%, Be:0.15%, Hf:0.6%, surplus is Cu.
The making processes of described a kind of Novel copper alloy preparation technology is as follows:
(1) dry: take by copper alloy component content proportioning the moisture content that each component raw material carries out drying to remove in raw material, bake out temperature is 105 DEG C, and drying time is 48h; Charcoal bit is adopted to make insulating covering agent;
(2) melting: molten alloy in main frequency furnace, furnace temperature is adjusted to after 300 DEG C of maintenance 5min drop into copper alloy each component raw material and heats up gradually, heat-up rate controls at 5 DEG C/min, treat that alloy raw material starts fusing, adopt rice bran to make insulating covering agent, be sprinkled into rice bran amount and be advisable, after temperature rises to 1100 DEG C with covering alloy liquid surface, insulation 20min, obtains copper alloy solution;
(3) refining: make smelting furnace be warming up to 1400 DEG C of alloys and carry out refining, add while stirring the calcium carbonate of 50%, the salt of 40% and 10% silica sand carry out refining, refining time is 25min, and after refining is complete, at 850 DEG C, insulation leaves standstill 13min, carries out dragging for Slag treatment;
(4) cast: by after mould and die preheating to 350 DEG C, the copper alloy solution of refining is poured in casting mould at 1100 DEG C, naturally cools to room temperature and obtain foundry goods; Cast gauge is Ф 60cm, length >=400 cm;
(5) hot rolling: foundry goods is heated to 900 DEG C of insulation 45min, then divide three passages to carry out hot rolling, breaking down temperature is 950 DEG C, and reduction in pass is 10%; It is 800 DEG C that secondary road rolls temperature, and reduction in pass is 8%; Finishing temperature control at 700 DEG C, quick online water-cooled after last passage hot rolling, speed of cooling is not less than 5 DEG C/sec;
(6) cold rolling: the copper alloy after heat being pricked carries out cold rolling, and cold rolling pass draught is 58% for the first time, and annealing time is 2h, and annealing temperature is 550 DEG C; Second time cold rolling pass draught is 40%, and annealing time is 1h, and annealing temperature is 450 DEG C; Third time, cold rolling pass draught was 25%, and do not need annealing after rolling, naturally cooling is Novel copper alloy of the present invention.
embodiment 3:
A kind of Novel copper alloy, contains according to weight percent content: contain according to weight percent content: Yb:0.07%, Ni:0.045%, Ti:0.09%, Mo:1.03%, Ta:0.009%, Rh:0.014%, Ba:0.01%, Th:0.029%, Er:0.2%, Tb:0.25%, Lu:0.09%, In:0.17%, Co:0.0.09%, Cr:0.1%, Be:0.2%, Hf:0.7%, surplus is Cu.
The making processes of described a kind of Novel copper alloy preparation technology is as follows:
(1) dry: take by copper alloy component content proportioning the moisture content that each component raw material carries out drying to remove in raw material, bake out temperature is 110 DEG C, and drying time is 48h; Charcoal bit is adopted to make insulating covering agent;
(2) melting: molten alloy in main frequency furnace, furnace temperature is adjusted to after 300 DEG C of maintenance 5min drop into copper alloy each component raw material and heats up gradually, heat-up rate controls at 5 DEG C/min, treat that alloy raw material starts fusing, adopt rice bran to make insulating covering agent, be sprinkled into rice bran amount and be advisable, after temperature rises to 1200 DEG C with covering alloy liquid surface, insulation 20min, obtains copper alloy solution;
(3) refining: make smelting furnace be warming up to 1500 DEG C of alloys and carry out refining, add while stirring the calcium carbonate of 50%, the salt of 40% and 10% silica sand carry out refining, refining time is 30min, and after refining is complete, at 900 DEG C, insulation leaves standstill 15min, carries out dragging for Slag treatment;
(4) cast: by after mould and die preheating to 400 DEG C, the copper alloy solution of refining is poured in casting mould at 1200 DEG C, naturally cools to room temperature and obtain foundry goods; Cast gauge is Ф 60cm, length >=400 cm;
(5) hot rolling: foundry goods is heated to 900 DEG C of insulation 45min, then divide three passages to carry out hot rolling, breaking down temperature is 950 DEG C, and reduction in pass is 10%; It is 800 DEG C that secondary road rolls temperature, and reduction in pass is 8%; Finishing temperature control at 700 DEG C, quick online water-cooled after last passage hot rolling, speed of cooling is not less than 5 DEG C/sec;
(6) cold rolling: the copper alloy after heat being pricked carries out cold rolling, and cold rolling pass draught is 60% for the first time, and annealing time is 2h, and annealing temperature is 600 DEG C; Second time cold rolling pass draught is 50%, and annealing time is 1h, and annealing temperature is 500 DEG C; Third time, cold rolling pass draught was 30%, and do not need annealing after rolling, naturally cooling is Novel copper alloy of the present invention.
the performance of the alloy that embodiment 1-3 obtains is listed in the table below
| Tensile strength | Elongation after fracture | Electric conductivity | |
| 1 | 620MPa | 12.5% | 56%IACS |
| 2 | 615MPa | 15% | 52%IACS |
| 3 | 624MPa | 13% | 51.2%IACS |
Below the present invention be described in detail, the above, be only the preferred embodiment of the present invention, when not limiting the scope of the present invention, namely allly does impartial change according to the application's scope and modify, all should still belong in covering scope of the present invention.
Claims (3)
1. a Novel copper alloy, it is characterized in that, contain according to weight percent content: Yb:0.05-0.07%, Ni:0.035-0.045%, Ti:0.07-0.09%, Mo:1.02-1.03%, Ta:0.004-0.009%, Rh:0.012-0.014%, Ba:0.008-0.01%, Th:0021-0.029%, Er:0.1-0.2%, Tb:0.15-0.25%, Lu:0.07-0.09%, In:0.12-0.17%, Co:0.05-0.0.09%, Cr:0.07-0.1%, Be:0.1-0.2%, Hf:0.5-0.7%, surplus is Cu.
2. the preparation method of Novel copper alloy as claimed in claim 1, is characterized in that:
(1) dry: take by copper alloy component content proportioning the moisture content that each component raw material carries out drying to remove in raw material, bake out temperature is 100-110 DEG C, and drying time is 48;
(2) melting: molten alloy in main frequency furnace, furnace temperature is adjusted to after 300 DEG C of maintenance 5min drop into copper alloy each component raw material and heats up gradually, heat-up rate controls at 5 DEG C/min, treat that alloy raw material starts fusing, adopt rice bran to make insulating covering agent, be sprinkled into rice bran amount and be advisable, after temperature rises to 1000-1200 DEG C with covering alloy liquid surface, insulation 20min, obtains copper alloy solution;
(3) refining: make smelting furnace be warming up to 1300-1500 DEG C of alloy and carry out refining, add while stirring the calcium carbonate of 50%, the salt of 40% and 10% silica sand carry out refining, refining time is 20-30min, after refining is complete, at 800-900 DEG C, insulation leaves standstill 10-15min, carries out dragging for Slag treatment;
(4) cast: by mould and die preheating to after 300-400 DEG C, the copper alloy solution of refining is poured in casting mould at 1000-1200 DEG C, naturally cools to room temperature and obtain foundry goods; Cast gauge is Ф 60cm, length >=400 cm;
(5) hot rolling: foundry goods h is heated to 900-1000 DEG C of insulation 45min, then divide three passages to carry out hot rolling, breaking down temperature is 950-1000 DEG C, and reduction in pass is 10%; It is 800-900 DEG C that secondary road rolls temperature, and reduction in pass is 8%; Finishing temperature control at 700-780 DEG C, quick online water-cooled after last passage hot rolling, speed of cooling is not less than 5 DEG C/sec;
(6) cold rolling: the copper alloy after heat being pricked carries out cold rolling, and cold rolling pass draught is 56%-60% for the first time, and annealing time is 2h, and annealing temperature is 500-600 DEG C; Second time cold rolling pass draught is 30%-50%, and annealing time is 1h, and annealing temperature is 400-500 DEG C; Third time, cold rolling pass draught was 20%-30%, and do not need annealing after rolling, naturally cooling is Novel copper alloy of the present invention.
3. the preparation method of Novel copper alloy as claimed in claim 1, is characterized in that: contain according to weight percent content: Yb:0.05%, Ni:0.035%, Ti:0.07%, Mo:1.02%, Ta:0.004%, Rh:0.012%, Ba:0.008%, Th:0021%, Er:0.1%, Tb:0.15%, Lu:0.07%, In:0.12%, Co:0.05%, Cr:0.07%, Be:0.1%, Hf:0.5%, surplus is Cu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410688393.XA CN104357707A (en) | 2014-11-26 | 2014-11-26 | Novel copper alloy and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410688393.XA CN104357707A (en) | 2014-11-26 | 2014-11-26 | Novel copper alloy and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104357707A true CN104357707A (en) | 2015-02-18 |
Family
ID=52525012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410688393.XA Pending CN104357707A (en) | 2014-11-26 | 2014-11-26 | Novel copper alloy and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104357707A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107805734A (en) * | 2017-12-13 | 2018-03-16 | 柳州智臻智能机械有限公司 | A kind of copper alloy for electronic material and preparation method thereof |
| CN107858581A (en) * | 2017-11-07 | 2018-03-30 | 刘兴满 | Mining diving pump impeller alloy material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0372045A (en) * | 1989-08-14 | 1991-03-27 | Nippon Mining Co Ltd | High strength and high conductivity copper alloy having excellent adhesion for oxidized film |
| JPH059619A (en) * | 1991-07-08 | 1993-01-19 | Furukawa Electric Co Ltd:The | Production of high-strength copper alloy |
| CN1856588A (en) * | 2003-09-19 | 2006-11-01 | 住友金属工业株式会社 | Copper alloy and method for production thereof |
| CN103088228A (en) * | 2012-09-29 | 2013-05-08 | 浙江天河铜业股份有限公司 | Production method of high-strength high-conductivity copper alloy stranded wire |
| CN104046816A (en) * | 2014-06-05 | 2014-09-17 | 锐展(铜陵)科技有限公司 | Preparation method of high-strength copper alloy wire for automobile industry |
-
2014
- 2014-11-26 CN CN201410688393.XA patent/CN104357707A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0372045A (en) * | 1989-08-14 | 1991-03-27 | Nippon Mining Co Ltd | High strength and high conductivity copper alloy having excellent adhesion for oxidized film |
| JPH059619A (en) * | 1991-07-08 | 1993-01-19 | Furukawa Electric Co Ltd:The | Production of high-strength copper alloy |
| CN1856588A (en) * | 2003-09-19 | 2006-11-01 | 住友金属工业株式会社 | Copper alloy and method for production thereof |
| CN103088228A (en) * | 2012-09-29 | 2013-05-08 | 浙江天河铜业股份有限公司 | Production method of high-strength high-conductivity copper alloy stranded wire |
| CN104046816A (en) * | 2014-06-05 | 2014-09-17 | 锐展(铜陵)科技有限公司 | Preparation method of high-strength copper alloy wire for automobile industry |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858581A (en) * | 2017-11-07 | 2018-03-30 | 刘兴满 | Mining diving pump impeller alloy material |
| CN107805734A (en) * | 2017-12-13 | 2018-03-16 | 柳州智臻智能机械有限公司 | A kind of copper alloy for electronic material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104745861B (en) | A kind of preparation method of yorcalnic plastic mould material | |
| CN103643080A (en) | High-strength, high-ductility and high-conductivity copper-nickel-silicon alloy bar and production method thereof | |
| CN102383078A (en) | Preparation method of high-strength and high-conductivity beryllium copper alloy | |
| CN103352137B (en) | For the copper alloy with high strength and high conductivity and preparation method thereof of power switch spring contact | |
| CN108330320B (en) | A kind of high-performance Cu-Ni-Si alloy lead frames material and preparation method thereof | |
| CN105112802A (en) | Method for preparing wear-resistant plastic moulds | |
| CN105839038A (en) | Preparation method for high-strength high-conductivity Cu-Ag-Fe alloy | |
| CN104357707A (en) | Novel copper alloy and preparation method thereof | |
| CN108165828A (en) | A kind of abrasion-proof zinc-base alloy and preparation method thereof | |
| CN106399861A (en) | Alloy for high-pressure eighth-grade partition board outer ring and forging method of outer ring | |
| CN108043878A (en) | A kind of method that high flaw detection of ellipse continuous casting billet production requires plastic mould steel thick plate | |
| CN105112715A (en) | CuZnNiSi alloy, preparation method thereof and method for preparing strips using the same | |
| CN105936983A (en) | High-strength and high-conductivity copper alloy material | |
| CN101323920A (en) | Special type tin bronze alloys and manufacturing method thereof | |
| CN106676318B (en) | A kind of asynchronous traction motor rotor bar brass material containing zirconium and preparation method thereof | |
| CN101429600A (en) | Production technology for tellurium copper bar, plate, stick or pipe | |
| CN101428305A (en) | Process for manufacturing copper iron alloy plate (row, stick, tube) | |
| CN105950991A (en) | Copper-bearing high-polishing die steel and preparing technology thereof | |
| CN106947883A (en) | A kind of lead-free corrosion resistant cutting brass alloy and preparation method thereof | |
| CN103757477A (en) | Copper-nickel-tin alloy for switch socket and preparation method thereof | |
| CN102690973A (en) | Lead-free free-cutting brass alloy and preparation method thereof | |
| CN103757476A (en) | Magnesium-bismuth brass alloy material and preparation method thereof | |
| CN108546865B (en) | A kind of preparation method of high-strength Antioxidant alloy material | |
| CN102978431B (en) | Method for manufacturing copper-iron alloy used for lead frame | |
| CN106567022A (en) | Rare earth copper alloy material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150218 |
|
| RJ01 | Rejection of invention patent application after publication |