CN102061406B - Novel high-elasticity Cu-Ni-Mn alloy and preparation method thereof - Google Patents
Novel high-elasticity Cu-Ni-Mn alloy and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a novel high-elasticity Cu-Ni-Mn alloy which comprises the following components in percent by weight: 15-20 percent of Ni, 15-20 percent of Mn, 0.1 percent of Ti, 0.5-1 percent of Al, 0.05 percent of P, 0-0.1 percent of Re and the balance of Cu, wherein the weight percent sum of all the components is 100 percent. The invention also discloses a preparation method of the high-elasticity Cu-Ni-Mn alloy, which is simpler, is capable of reducing the preparation cost of the alloy, and solves the problems of a mass of pores and defects and the like inside a cast ingot because the Cu-Ni-Mn alloy is extremely easy to absorb gas during smelting and casting, and a key problem that the cast ingot is easy to crack during the rolling to cause the subsequent processing not to be favorably carried out. The alloy is suitable for making various elastic elements, contact springs, switches, contacts and the like in industries of instruments, electrical appliances and the like.
Description
Technical field
The present invention designs a kind of cupronickel alloy material and preparation method thereof, is specifically related to a kind ofly take copper as matrix, and nickel, manganese, aluminium, titanium, phosphorus, rare earth are novel elastic alloy material of main alloy element and preparation method thereof.
Background technology
Elastic alloy is a class alloy very important in the functional materials, also is indispensable material in precision instrumentation and the precision optical machinery.This class alloy is widely used in making various resilient connection elements, for example, pressure elastic contact chip, heat-sensitive duplex metal elastic element, rly. be with all kinds of elastic elements of using in electrically conductive elastic connector and the aeronautical instrument instrument, and their function is generation power or moment, stored energy, buffering vibration, as resilient connection and spacer medium etc.
Elastic alloy can be divided into: spring steel (comprises carbon steel and steel alloy, such as 65 steel and 65Mn), iron-based elastic alloy (such as Fe-Cr-Ni system and Fe-Cr-Ni-Co system), Ni-based elastic alloy (such as famous nickel-beryllium alloy), cobalt-based elastic alloy (such as Co40NiCrMo), copper base elastic alloy (such as berylliumbronze, tin-phosphor bronze and nickelin etc.), niobium base elastic alloy (be high temperature high elastic modulus alloy such as Ni-Cr-Co) etc.Copper base elastic alloy possesses good physics, chemistry, mechanical mechanics property, has consequence in the high-strength highly-conductive high elastic modulus alloy.
At present, the alloys such as the most famous berylliumbronze and titanium bronze in the copper base elastic alloy commonly used, to add in copper that solubility with temperature reduces and the alloying element that obviously reduces, form supersaturated solid solution by pyroprocessing, supersaturated solid solution is divided to be parsed, in matrix, these alloys belong to precipitation strength type elastic alloy to alloying element with the formal distribution of precipitated phase; And great majority all are single-phase αsolidsolutions in the alloys such as aluminum brass, German silver, xantal, tinbronze, do not produce phase transformation, can only rely on cold deformation and low-temperature heat treatment subsequently to be strengthened, and alloy belongs to working hardening type elastic alloy.In copper base precipitation strength type elastic alloy, berylliumbronze is only a kind of high-elastic high strength alloy.Yet the production cost of beraloy is high, and its dust is poisonous, and its toxicity of compound is larger.The compound of beryllium is harmful, and producers should not work under comparatively high temps for a long time.Therefore, in recent years along with the continuous enhancing of human environmental consciousness, is seeking excellent property, and the more harmonious novel elastic alloy of environment both at home and abroad always.
In the nickelin, the MnNi compound that manganese and nickel form has the effect of crystal grain thinning, and can put forward heavy alloyed mechanical property and processing characteristics by the precipitation hardening of MnNi.After cupronickel added manganese, resistance value was stable, and temperature coefficient of resistance is less, has good conductivity, is famous electrical alloy.Studies show that, nickelin is and to possess novel elastic alloys high-strength, high-elastic and the excellent conductive capability potentiality by heat treatment reinforcement.
Yet, very easily air-breathing in the high melt castingprocesses of nickelin, cause that there is a large amount of pores in inside ingot, the defective such as be mingled with, loosen, alloy is easy to crack in the operation of rolling, not yet is well used so far.Chinese patent application (application number: 200910309818) about the preparation method of copper-nickel-manganese-iron alloy, that various alloys are made powder, utilize vacuum high-temperature sintering, furnace cooling carries out solid solution aging after the room temperature and obtains alloy body, this method need to be made powder with raw material, preparation method's complexity requires high, production efficiency is low, cost is high, the prepared alloy billet of this method is little, shape is single, be unfavorable for further processing and realize industrialization, and just ingot casting is carried out simple solid solution aging in this method, there is not further plastic working, can not give full play to the performance of alloy, the application of product is very limited.
Summary of the invention
A kind of new copper nickel manganese elastic alloy, according to weight percent, the alloying element that described copper nickel manganese elastic alloy comprises is: 15%～20% nickel, 15%～20% manganese and Trace Element Titanium, aluminium, phosphorus and rare earth, the content of described trace element is respectively: titanium: 0.1%, aluminium: 0.1%～1%, phosphorus: 0.05%, rare earth: 0%～0.1%; The weight percent sum of each component is 100% in the alloy, and surplus is copper and a small amount of impurity.
Further, the weight percent of element nickel and manganese Mn is 1: 1 in the described alloy.
Further, described copper nickel manganese elastic alloy color is the white of light, tensile strength sigma
b: 965～1200MPa; Unit elongation δ: 1.5～4%; Hardness 300～374Hv; The new copper Magno of the high strength and high flexibility premium properties of elastic modulus E: 136～153GPa.
The preparation method of above-mentioned new copper nickel manganese elastic alloy, the concrete technology flow process is:
A. prepare burden, feed intake and melting according to weight percent;
B. mill face;
C. homogenizing annealing;
D. hot rolling;
E. solution treatment;
F. cold roughing;
G. process annealing;
H. cold finish rolling;
I. ageing treatment.
Further, the melting that feeds intake described in the step a sequentially is: 1. copper+nickel; 2. after copper, nickel fusing, add manganese+aluminium, wherein manganese will entrain into stove with copper-clad; 3. come out of the stove front adding copper titanium master alloy and copper phosphorus master alloy and copper rare earth intermediate alloy; Be used for crystal grain thinning and removal of impurities; Smelting temperature is: 1150～1300 ℃; Pouring temperature is 1200 ℃ ± 20 ℃.
Further, the rear melt that at every turn feeds intake in the described fusion process all covers with the thick charcoal layer of 10～15mm, and evenly is sprinkling upon on the charcoal layer with tiny graphite scale, covers the slit that charcoal layer stays fully.
Further, the temperature of described homogenizing annealing, hot rolling is: 800～900 ℃, be heat-up time: 2～10h; In the described process annealing operation, annealing temperature is: 600～750 ℃, the time is: 2～5h.
Further, in the described solution treatment operation, solid solubility temperature is: 600～800 ℃, soaking time is: 2～8h, the type of cooling is water-cooled.
Further, in the described ageing treatment process, aging temp is: 400～500 ℃, the time is: 8～20h, the type of cooling is air cooling or furnace cooling.
Further, cold rolling general working rate is between the described twice annealing: 50～80%, and the cold rolling general working rate of finished product is: 40～60%.
Compared with prior art, the invention has the advantages that new copper nickel manganese elastic alloy, is that intensity, hardness, processing characteristics aspect all have superperformance, also has simultaneously good over-all properties.And, the preparation process of this alloy is fairly simple, technical process is short, thereby and by covering charcoal and graphite when the metal melting and in fusion process, adding alloyed metal and solve the very easily air-breathing problem that causes inside ingot to have a large amount of pores in the melting and casting process; By adding alloyed metal in the fusion process, and the addition sequence of controlling various alloyed metals adopt with mode and in the press working process specific annealing process make ingot casting solidifying with phase transition process in avoid fragility generation mutually, so solved alloy cast ingot problem that following process is processed etc. that is unfavorable for easy to crack in the press working process.This class alloy is widely used in making various elastic elements, a kind of good high strength, high conductivity, snappiness copper base alloy, because it does not contain and any environment, human body harmful's element is had again good over-all properties, it is the good substitute of the prior elastic alloy such as berylliumbronze.
Embodiment
By the following examples the present invention is described in further detail.
Embodiment 1
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% cerium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 1.
Copper nickel manganese elastic alloy becomes to be grouped into example (% by weight) among table 1 embodiment 1
| Alloying element | Ni | Mn | Al | Ce | Ti | P | Cu |
| Content | 15 | 15 | 0.2 | 0.02 | 0.1 | 0.05 | Surplus |
The preparation method:
1. melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, charcoal layer with 10～15mm covers bath surface fully, spread evenly at charcoal layer with tiny graphite scale, purpose is that the slit that charcoal layer stays is covered fully, then covers smelting furnace with graphite cake again; Carry out rapid heating, melting according to melting technology; Raw material is all after the fusing in stove, the manganese sheet that adds aluminium flake and wrap up in copper-clad, and with charcoal, the covering of graphite scale melt, and the covering method of use and cladding thickness are with front identical; After the manganese sheet melts fully, add copper-10% cerium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, then cover melt with charcoal, graphite scale, graphite cake covers smelting furnace, and the covering method of use and cladding thickness are with front identical; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures;
2. mill face: oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 850 ℃, homogenizing insulation 3 hours.
4. hot rolling: carry out 63% deformation process by hot rolling alloy billet.
5. solution treatment: will be heated to through the alloy of hot rolling 750 ℃ of insulation 3h, water-cooled.
6. cold roughing: will carry out through the alloy of solution treatment 80% cold deformation processing.
7. process annealing: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, 700 ℃ of lower insulations 2 hours, eliminate fully cold rolling work hardening.
8. cold finish rolling: alloy carried out 52% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, at 450 ℃ of lower insulations 8 hours, furnace cooling.
Embodiment 2
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% lanthanum master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 2.
Copper nickel manganese elastic alloy becomes to be grouped into example (% by weight) among table 2 embodiment 2
| Alloying element | Ni | Mn | Al | La | Ti | P | Cu |
| Content | 15 | 15 | 0.2 | 0.02 | 0.1 | 0.05 | Surplus |
The preparation method:
1, melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, with the charcoal layer covering of 10～15mm, spread evenly at charcoal layer with tiny graphite scale again, purpose is to cover the slit that charcoal layer stays, and then covers smelting furnace with graphite cake; Carry out rapid heating, melting according to melting technology; Manganese sheets that raw material all adds aluminium flakes and wraps up in copper-clad after the fusing in stove, and with charcoal, graphite scale covering melt, the covering method of use and cladding thickness are with front identical; After the manganese sheet melts fully, add copper-10% lanthanum master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, then cover melt with charcoal, graphite scale, the covering method of use and cladding thickness are with front identical; Graphite cake covers smelting furnace; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures.
2. mill face: oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 800 ℃, homogenizing insulation 4 hours.
4. hot rolling: carry out 65% deformation process by hot rolling alloy billet.
5. solution treatment: will be heated to through the alloy of hot rolling 700 ℃ of insulation 2h, water-cooled.
6. cold roughing: will carry out through the alloy of solution treatment 70% cold deformation processing.
7. process annealing: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, 650 ℃ of lower insulations 3 hours, eliminate fully cold rolling work hardening.
8. cold finish rolling: alloy carried out 50% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, at 450 ℃ of lower insulations 10 hours, furnace cooling.
Embodiment 3
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% lanthanum master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 3.
Copper nickel manganese elastic alloy becomes to be grouped into example among table 3 embodiment 3
| Alloying element | Ni | Mn | Al | La | Ti | P | Cu |
| Content (% by weight) | 15 | 15 | 0.2 | 0.04 | 0.1 | 0.05 | Surplus |
The preparation method:
1. melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, with the charcoal layer covering of 10～15mm, spread evenly at charcoal layer with tiny graphite scale again, purpose is to cover the slit that charcoal layer stays, and then covers smelting furnace with graphite cake; Carry out rapid heating, melting according to melting technology; Manganese sheets that raw material all adds aluminium flakes and wraps up in copper-clad after the fusing in stove, and with charcoal, graphite scale covering melt, the covering method of use and cladding thickness are with front identical; After the manganese sheet melts fully, add copper-10% lanthanum master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, then cover melt with charcoal, graphite scale, the covering method of use and cladding thickness are with front identical; Graphite cake covers smelting furnace; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures.
2. mill face: oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 900 ℃, homogenizing insulation 5 hours.
4. hot rolling: ingot casting carries out 60% distortion after milling face, homogenizing insulation processing.
5. solid solution: will be heated to through the alloy of hot rolling 750 ℃ of insulation 3h, water-cooled.
6. cold rolling: as will to carry out through the alloy of solution treatment 75% cold deformation processing.
7. process annealing: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, 750 ℃ of lower insulations 3 hours, eliminate fully cold rolling work hardening.
8. cold finish rolling: alloy carried out 60% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, at 500 ℃ of lower insulations 8 hours, furnace cooling.
Embodiment 4
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% iridium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 4.
Copper nickel manganese elastic alloy becomes to be grouped into example among table 4 embodiment 4
| Alloying element | Ni | Mn | Al | Y | Ti | P | Cu |
| Content (% by weight) | 15 | 15 | 0.2 | 0.04 | 0.1 | 0.05 | Surplus |
The preparation method:
1. melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, with the charcoal layer covering of 10～15mm, spread evenly at charcoal layer with tiny graphite scale again, purpose is to cover the slit that charcoal layer stays, and then covers smelting furnace with graphite cake; Carry out rapid heating, melting according to melting technology; Manganese sheets that raw material all adds aluminium flakes and wraps up in copper-clad after the fusing in stove, and with charcoal, graphite scale covering melt, the covering method of use and cladding thickness are with front identical; After the manganese sheet melts fully, add copper-10% iridium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, then cover melt with charcoal, graphite scale, the covering method of use and cladding thickness are with front identical; Graphite cake covers smelting furnace; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures.
2. mill face: oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 900 ℃, homogenizing insulation 3 hours.
4. hot rolling: ingot casting is after milling face, and homogenizing is processed, and carries out 65% distortion again.
5. solid solution: will be heated to through the alloy of hot rolling 750 ℃ of insulation 5h, water-cooled.
6. cold rolling: as will to carry out through the alloy of solution treatment 80% cold deformation processing.
7. process annealing: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, 600 ℃ of lower insulations 5 hours, eliminate fully cold rolling work hardening.
8. cold finish rolling: alloy carried out 58% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, at 400 ℃ of lower insulations 12 hours, furnace cooling.
Embodiment 5
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% iridium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 5.
Copper nickel manganese elastic alloy becomes to be grouped into example (% by weight) among table 5 embodiment 5
| Alloying element | Ni | Mn | Al | Y | Ti | P | Cu |
| Content | 15 | 15 | 0.2 | 0.06 | 0.1 | 0.05 | Surplus |
The preparation method:
1. melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, with the charcoal layer covering of 10～15mm, spread evenly at charcoal layer with tiny graphite scale again, purpose is to cover the slit that charcoal layer stays, and then covers smelting furnace with graphite cake; Carry out rapid heating, melting according to melting technology; Manganese sheets that raw material all adds aluminium flakes and wraps up in copper-clad after the fusing in stove, and with charcoal, graphite scale covering melt, the covering method of use and cladding thickness are with front identical; After the manganese sheet melts fully, add copper-10% iridium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, then cover melt with charcoal, graphite scale, the covering method of use and cladding thickness are with front identical; Graphite cake covers smelting furnace; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures.
2. mill face: oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 850 ℃, homogenizing insulation 3 hours.
4. hot rolling: ingot casting after the homogenizing, carries out 65% deformation process through milling face.
5. solid solution: will be heated to through the alloy of hot rolling 800 ℃ of insulation 2h, water-cooled.
6. cold rolling: as will to carry out through the alloy of solution treatment 75% cold deformation processing.
7. process annealing: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, 700 ℃ of lower insulations 3 hours, eliminate fully cold rolling work hardening.
8. cold finish rolling: alloy carried out 55% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, at 500 ℃ of lower insulations 12 hours, furnace cooling.
Embodiment 6
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% cerium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 6.
Copper nickel manganese elastic alloy becomes to be grouped into example among table 6 embodiment 6
| Alloying element | Ni | Mn | Al | Ce | Ti | P | Cu |
| Content | 15 | 15 | 0.2 | 0.06 | 0.1 | 0.05 | Surplus |
The preparation method:
1. melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, charcoal layer with 10～15mm covers, spread evenly at charcoal layer with tiny graphite scale, purpose is to cover the slit that charcoal layer stays fully, then covers smelting furnace with graphite cake again; Carry out rapid heating, melting according to melting technology; Manganese sheets that raw material all adds aluminium flakes and wraps up in copper-clad after the fusing in stove, and cover melt fully with charcoal, graphite scale, the covering method of use and cladding thickness are with front identical; After the manganese sheet melts fully, add copper-10% cerium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, then cover melt with charcoal, graphite scale, the covering method of use and cladding thickness are with front identical; Graphite cake covers smelting furnace; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures.
2. mill face: oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 850 ℃, homogenizing insulation 5 hours.
4. hot rolling: ingot casting after the homogenizing, carries out 65% deformation process through milling face.
5. solid solution: will be heated to through the alloy of hot rolling 750 ℃ of insulation 3h, water-cooled.
6. cold rolling: as will to carry out through the alloy of solution treatment 80% cold deformation processing.
7. process annealing: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, 750 ℃ of lower insulations 2 hours, eliminate fully cold rolling work hardening.
8. cold finish rolling: alloy carried out 56% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the Rebuild of Heat-treatment Annealing Furnace, at 450 ℃ of lower insulations 16 hours, furnace cooling.
Table 7,8,9 represents respectively is that the invention nickelin becomes to be grouped into (% by weight) with comparative alloy salient features, comparative alloy and becomes to be grouped into (% by weight) with nickelin of the present invention, represents among the present invention each alloy content and performance in the nickelin in mode intuitively.
Table 7 nickelin of the present invention and comparative alloy salient features
| Alloy | Young's modulus (GPa) | Tensile strength (MPa) | Unit elongation (%) | Hardness (Hv) |
| Comparative alloy QBe 2 | 122～137 | 1125～1175 | ≥1.5 | 320～360 |
| Nickelin | 136～153 | 965～1200 | 1.5～4 | 300～374 |
[0115]Table 8 comparative alloy becomes to be grouped into (% by weight)
| Alloying element | Ni | Al | Si | Fe | Be | Cu |
| Alloy content | 0.2-0.5 | 0.15 | 0.15 | 0.15 | 1.8-2.1 | Surplus |
Table 9 nickelin of the present invention becomes to be grouped into (% by weight)
| Alloying element | Ni | Mn | Al | Re | Ti | P | Cu |
| Alloy content | 15-20 | 15-20 | 0.5-1.0 | 0-0.1 | 0-0.1 | 0.05 | Surplus |
Claims (1)
1. the preparation method of a copper nickel manganese elastic alloy is characterized by, and the alloy preparation technology flow process is as follows:
A. according to weight percent Ni:15%～20%, Mn:15%～20%, Ti:0.1%, Al:0.1%～1%, P:0.05%, rare earth Re:0%～0.1%, surplus is Cu and a small amount of impurity, and the weight percent sum of each component is 100% to prepare burden, feed intake and melting; The described melting that feeds intake sequentially is: 1. copper and mickel; 2. after copper, nickel fusing, add manganese and aluminium, wherein manganese will entrain into stove with copper-clad; 3. come out of the stove front adding copper titanium master alloy and copper phosphorus master alloy and copper rare earth intermediate alloy are used for crystal grain thinning and removal of impurities; Smelting temperature is: 1150～1300 ℃; Pouring temperature is 1200 ℃ ± 20 ℃, and the rear melt that at every turn feeds intake in the described fusion process all covers with the thick charcoal layer of 10～15mm, and evenly is sprinkling upon on the charcoal layer with tiny graphite scale, covers the slit that charcoal layer stays fully;
B. mill face;
C. homogenizing annealing, the temperature of described homogenizing annealing is: 800～900 ℃, be heat-up time: 2～10h;
D. hot rolling, hot-rolled temperature are 800-900 ℃;
E. solution treatment, solid solubility temperature is: 600～800 ℃, soaking time is: 2～8h, the type of cooling is water-cooled;
F. cold roughing, general working rate is: 50～80%;
G. process annealing, annealing temperature is: 600～750 ℃, the time is: 2～5h;
H. cold finish rolling, general working rate is: 40～60%;
I. ageing treatment, aging temp is: 400～500 ℃, the time is: 8～20h, the type of cooling is air cooling or furnace cooling.
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| EP1251186A1 (en) * | 2001-04-19 | 2002-10-23 | Wieland-Werke AG | Copper-Nickel-Manganese alloy and its use |
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| JPS5696046A (en) * | 1979-12-28 | 1981-08-03 | Seiko Epson Corp | Exterior decorative part material for casting |
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| EP1251186A1 (en) * | 2001-04-19 | 2002-10-23 | Wieland-Werke AG | Copper-Nickel-Manganese alloy and its use |
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