CN106756135A - A kind of preparation method of alumina dispersion-strenghtened copper alloy bar material - Google Patents
A kind of preparation method of alumina dispersion-strenghtened copper alloy bar material Download PDFInfo
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- CN106756135A CN106756135A CN201611004207.1A CN201611004207A CN106756135A CN 106756135 A CN106756135 A CN 106756135A CN 201611004207 A CN201611004207 A CN 201611004207A CN 106756135 A CN106756135 A CN 106756135A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1078—Alloys containing non-metals by internal oxidation of material in solid state
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0021—Matrix based on noble metals, Cu or alloys thereof
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
Abstract
The invention discloses a kind of preparation method of alumina dispersion-strenghtened copper alloy bar material, the preparation method is comprised the steps of：(1) alloy melting, prepares albronze ingot；(2) alloy wire is prepared；(3) alloy wire gradient internal oxidition, obtains copper aluminium oxide alloy wire rod；(4) alloy densification, bar or sheet material coarse fodder are pressed into using two-step sintering method and hot extrusion；(5) alloy processing, drawing or machine-shaping of swaging further are carried out by described bar or sheet material coarse fodder, and required alloy bar material finished product is prepared into by specification.Using the alumina dispersion-strenghtened copper-base alloy bar material material of preparation of the invention, technological process is simple, with short production cycle, efficiency high, low production cost, obtained alumina dispersion-strenghtened copper-base alloy bar material material have the characteristic of high-compactness, high strength ＆ high electric-conduction and high softening temperature.
Description
Technical field
The present invention relates to metal-base composites technical field, and in particular to a kind of alumina dispersion-strenghtened copper alloy bar material
Preparation method.
Background technology
Dispersion-strengthened Cu it is a kind of with excellent high temperature intensity simultaneously but also with good conductive thermal conductivity performance function material
Material.Used as important functional material, dispersion-strengthened Cu is widely used in microwave device, welding electrode, leads of IC frame
The aspects such as frame, change-over switch, alloy bar material material.By adding a small amount of Second Phase Particle, dispersion-strengthened Cu is keeping copper conjunction
Golden good conductive heat conduction improves its mechanical strength again simultaneously.The essence of dispersion-strengtherning is hindered using the ultrafine dust of even dispersion
Hinder dislocation motion so as to improve material mechanical property under the high temperature conditions, the invigoration effect of its hardening constituent of even dispersion second was both
The elevated temperature strength and hardness of material are improve, low-alloyed electric conductivity will not be substantially dropped again, so that the material has well
Combination property.Common dispersed oxide mutually has Al2O3、Cr2O3、Zr2O3、SiO2、TiO2, MgO, CaO etc., wherein again with
Al2O3It is the most commonly used.The preparation method of dispersion strengthening copper alloy mainly has：Powder metallurgic method, mechanical alloying method, compound electric sink
Area method, mixing casting, coprecipitation, sol-gel process, reactive spray-deposition method, internal oxidation etc., wherein internal oxidation is
The preferred approach of current large-scale production dispersion strengthening copper alloy.Traditional internal oxidation prepares Al2O3Dispersion strengthening copper alloy materials
Technological process mainly have：Cu-Al meltings → water atomization or nitrogen atomization powder → mix with oxidant → in closed container
Reduced in high temperature (800-100 DEG C) internal oxidition → hydrogen unnecessary oxygen → jacket → vacuumize, seal → suppress (high temperature insostatic pressing (HIP) or
Hot static pressure etc.) → hot extrusion molding.Material at high temperature and mechanical property at room temperature that this traditional internal oxidation process is produced
It is all very superior with electric property, but complex process, production cycle are long, while unstable product quality.These problems are greatly
Hinder the popularization and application of internal oxidition production technology.In order to solve this problem, the present invention focused on and carried out in preparation technology
Improvement, simplifies technological process, increased controllability.
The content of the invention
Present invention solves the technical problem that a kind of aluminum oxide dispersion acid bronze alloy bar material and preparation method are to provide,
By rational element with preparation technology parameter is when optimized, a kind of high connductivity, heat-resisting, high intensity dispersion-strengtherning high are prepared
Copper alloy.
The technical scheme is that：A kind of alumina dispersion-strenghtened copper-base alloy bar material material, is in copper-based material
The aluminium of 0.3-1.5wt%, its preparation method is added to comprise the steps of：
(1) alloy melting：Copper, the aluminium of 0.3-1.5% of 98.5-99.7% are taken by weight percentage, are melted in intermediate frequency furnace
It is smelt copper-aluminium alloy ingots；
(2) alloy wire is prepared：Described copper-aluminium alloy ingots is gone into the removal of impurity through row turnery processing, contains 5-8% water
15-30min is soaked in the aqueous solution of based metal surfaces cleaning agent, at 40-60 DEG C, clear water is carried out very temperature control after rinsing well
Sky is dried, and the copper-aluminium alloy ingots removed after surface impurity and greasy dirt then is drawn into copper-aluminium alloy wires, by described copper-
Aluminium alloy wires cuts into the line segment of 2-3cm on cutting machine；
(3) alloy wire gradient internal oxidition：The copper that will have been cut off-aluminium alloy wires sealing is embedded in equipped with Cu2O：
Al2O3：Cu=6:2:In the internal oxidition device of 2 mixed-powder, the quality of the mixed-powder is the copper-aluminium alloy wires
6-8 times, oxygen in the gradient in internal oxidition stove through normal pressure internal oxidition, middle pressure internal oxidition and high pressure internal oxidition three phases successively
Change is processed, and obtains copper-aluminium oxide alloy wire rod；
(4) alloy densification：After the copper-aluminium oxide alloy wire rod is cooled into room temperature and cleaning-drying, using two steps
Sintering process is sintered, and sintering temperature is 600-980 DEG C, and time 2-4h obtains sintered blank, and described sintered blank is carried out into hot extrusion
It is pressed into bar or sheet material coarse fodder；
(5) alloy processing：Described bar or sheet material coarse fodder are carried out into drawing or machine-shaping of swaging, is prepared into by specification
Required alloy bar material finished product.
Further, the copper described in step (1) is the cathode copper that purity is 99.9%, and described aluminium is that purity is 99.9%
Industrial refined aluminium above.
Further, the technological parameter of the drawing wires described in step (2) is：Extrusion temperature is 650-850 DEG C, extrusion ratio
It is 230-250, alloy wire size is
Further, step (3) the gradient internal oxidation process parameter is：Normal pressure internal oxidition furnace temperature is 850-900 DEG C, is protected
Warm 30-45min；Middle pressure internal oxidition furnace temperature is 780-830 DEG C, and air pressure is 1.2-2atm, is incubated 30-60min；High pressure internal oxidition stove
Temperature is 680-720 DEG C, and air pressure is 5.0-6.0atm, is incubated 60-120imin.
Further, the technological parameter of the two-step sintering described in step (4) is：By described copper-aluminium oxide alloy powder
1-2h is incubated under 600-650 DEG C of lower temperature, is then brought rapidly up to 850-980 DEG C of sintering 1-2h.
Further, the Hot Extrusion Parameters described in step (4) are：Extrusion temperature is 860-900 DEG C, and extrusion ratio is
200-220。
Further, the high temperature high-pressure resistant material that the internal oxidition device described in step (3) is used, preferably using red copper,
Described internal oxidition device mainly includes copper tube, red copper inner cap and refractory wass, and described red copper length of tube is 30-100cm,
Internal diameter is 5-10cm, and thickness is 0.6-1cm, and described red copper inner cap thickness is 0.4-0.6cm, a diameter of 4.5-9.5cm, red copper
The back-up ring for respectively having width to be 0.5-0.7cm at pipe inner distance two ends 4-6cm, first adds a cover in red copper copper tube one end when using
Sealed with refractory wass after lid, add the mixed-powder, sealed with refractory wass after adding a cover the other end with red copper inner cap；
Described internal oxidition device high temperature high voltage resistant is functional, and sealing is strong, and having inner cap to protect will not pollute to mixed-powder.
Beneficial effects of the present invention are：(1) production efficiency is high, cycle is short, using alloy wire gradient internal oxidition, line
Material specific surface area is more easy to more greatly internal oxidition；(2) using two-step sintering method first in low-temperature insulation for a period of time rising to high temperature, can be with
The consistency of material is lifted, so as to lift the physical property of material.Using the alumina dispersion-strenghtened copper-base of preparation of the invention
Alloy bar material material, technological process is simple, with short production cycle, efficiency high, low production cost, obtained alumina dispersion-strenghtened copper
Based alloy bar material has the characteristic of high-compactness, high strength ＆ high electric-conduction and high softening temperature.
Specific embodiment
Embodiment 1：
A kind of alumina dispersion-strenghtened copper-base alloy bar material material, is the aluminium that 0.3wt% is added in copper-based material, its system
Preparation Method is comprised the steps of：
(1) alloy melting：99.7% copper, 0.3% aluminium is taken by weight percentage, and copper-aluminium is smelted into intermediate frequency furnace
Alloy pig；Described copper is the cathode copper that purity is 99.9%, and described aluminium is the industrial refined aluminium that purity is more than 99.9%；
(2) alloy wire is prepared：Described copper-aluminium alloy ingots is gone into the removal of impurity through row turnery processing, water base containing 5%
15min is soaked in the aqueous solution of metal surface detergent, at 40 DEG C, clear water is vacuum dried temperature control after rinsing well,
Then copper-the aluminium alloy ingots removed after surface impurity and greasy dirt is drawn into copper-aluminium alloy wires, the technological parameter of drawing wires
For：Extrusion temperature is 650 DEG C, and extrusion ratio is 230, and alloy wire size isBy described copper-aluminium alloy wires in cut-out
The line segment of 2cm is cut on machine；
(3) alloy wire gradient internal oxidition：The copper that will have been cut off-aluminium alloy wires sealing is embedded in equipped with Cu2O：
Al2O3：Cu=6:2:In the internal oxidition device of 2 mixed-powder, the quality of the mixed-powder is the copper-aluminium alloy wires
6 times, successively through the gradient internal oxidition of normal pressure internal oxidition, middle pressure internal oxidition and high pressure internal oxidition three phases in internal oxidition stove
Treatment, obtains copper-aluminium oxide alloy wire rod, and the gradient internal oxidation process parameter is：Normal pressure internal oxidition furnace temperature is 850 DEG C, is protected
Warm 30min；Middle pressure internal oxidition furnace temperature is 780 DEG C, and air pressure is 1.2atm, is incubated 30min；High pressure internal oxidition furnace temperature is 680 DEG C, gas
It is 5.0atm to press, and is incubated 60imin；Further, the high temperature high-pressure resistant material that described internal oxidition device is used, preferably makes
With red copper, mainly comprising copper tube, red copper inner cap and refractory wass, described red copper length of tube is described internal oxidition device
30cm, internal diameter is 5cm, and thickness is 0.6cm, and described red copper inner cap thickness is 0.4cm, a diameter of 4.5cm, copper tube inner side away from
The back-up ring for respectively having width to be 0.5cm away from the 4cm of two ends, refractory wass is used after copper tube one end first is added a cover into red copper inner cap when using
Sealing, adds the mixed-powder, is sealed with refractory wass after adding a cover the other end with red copper inner cap；Described internal oxidition dress
Put high temperature high voltage resistant functional, sealing is strong, having inner cap to protect will not pollute to mixed-powder.
(4) alloy densification：After the copper-aluminium oxide alloy wire rod is cooled into room temperature and cleaning-drying, using two steps
Sintering process is sintered, and technological parameter is：Described copper-aluminium oxide alloy powder is incubated 1h under 600 DEG C of lower temperatures, so
After be brought rapidly up to 850 DEG C sintering 1h obtain sintered blank, described sintered blank is carried out into hot extrusion is pressed into bar or sheet material coarse fodder,
Hot Extrusion Parameters are：Extrusion temperature is 860 DEG C, and extrusion ratio is 200；
(5) alloy processing：Described bar or sheet material coarse grain are carried out into drawing or machine-shaping of swaging, is prepared into by specification
Required alloy bar material finished product.
Embodiment 2：
A kind of alumina dispersion-strenghtened copper-base alloy bar material material, is the aluminium that 0.85wt% is added in copper-based material, its
Preparation method is comprised the steps of：
(1) alloy melting：Take 99.15% copper, 0.85% aluminium by weight percentage, be smelted into intermediate frequency furnace copper-
Aluminium alloy ingots；Described copper is the cathode copper that purity is 99.9%, and described aluminium is the industrial refined aluminium that purity is more than 99.9%；
(2) alloy wire is prepared：Described copper-aluminium alloy ingots is gone into the removal of impurity through row turnery processing, contains 5-8% water
25min is soaked in the aqueous solution of based metal surfaces cleaning agent, at 50 DEG C, clear water carries out vacuum and does temperature control after rinsing well
It is dry, the copper-aluminium alloy ingots removed after surface impurity and greasy dirt is then drawn into copper-aluminium alloy wires, the technique of drawing wires
Parameter is：Extrusion temperature is 750 DEG C, and extrusion ratio is 240, and alloy wire size isBy described copper-aluminium alloy wires
The line segment of 2.5cm is cut on cutting machine；
(3) alloy wire gradient internal oxidition：The copper that will have been cut off-aluminium alloy wires sealing is embedded in equipped with Cu2O：
Al2O3：Cu=6:2:In the internal oxidition device of 2 mixed-powder, the quality of the mixed-powder is the copper-aluminium alloy wires
7 times, successively through the gradient internal oxidition of normal pressure internal oxidition, middle pressure internal oxidition and high pressure internal oxidition three phases in internal oxidition stove
Treatment, obtains copper-aluminium oxide alloy wire rod, and the gradient internal oxidation process parameter is：Normal pressure internal oxidition furnace temperature is 870 DEG C, is protected
Warm 40min；Middle pressure internal oxidition furnace temperature is 800 DEG C, and air pressure is 1.6atm, is incubated 45min；High pressure internal oxidition furnace temperature is 700 DEG C, gas
It is 5.5atm to press, and is incubated 90imin；Further, the high temperature high-pressure resistant material that described internal oxidition device is used, preferably makes
With red copper, mainly comprising copper tube, red copper inner cap and refractory wass, described red copper length of tube is described internal oxidition device
65cm, internal diameter is 7cm, and thickness is 0.8cm, and described red copper inner cap thickness is 0.5cm, a diameter of 6.5cm, copper tube inner side away from
The back-up ring for respectively having width to be 0.6cm away from the 5cm of two ends, refractory wass is used after copper tube one end first is added a cover into red copper inner cap when using
Sealing, adds the mixed-powder, is sealed with refractory wass after adding a cover the other end with red copper inner cap；Described internal oxidition dress
Put high temperature high voltage resistant functional, sealing is strong, having inner cap to protect will not pollute to mixed-powder.
(4) alloy densification：After the copper-aluminium oxide alloy wire rod is cooled into room temperature and cleaning-drying, using two steps
Sintering process is sintered, and technological parameter is：Described copper-aluminium oxide alloy powder is incubated 1.5h under 630 DEG C of lower temperatures,
Then it is brought rapidly up obtaining sintered blank to 915 DEG C of sintering 1.5h, described sintered blank is carried out into hot extrusion is pressed into bar or sheet material
Coarse fodder, Hot Extrusion Parameters are：Extrusion temperature is 880 DEG C, and extrusion ratio is 210；
(5) alloy processing：Described bar or sheet material coarse grain are carried out into drawing or machine-shaping of swaging, is prepared into by specification
Required alloy bar material finished product.
Embodiment 3：
A kind of alumina dispersion-strenghtened copper-base alloy bar material material, be in copper-based material add 1.5wt% aluminium and
The silver of 0.3wt%, its preparation method is comprised the steps of：
(1) alloy melting：98.5% copper, 1.5% aluminium is taken by weight percentage, and copper-aluminium is smelted into intermediate frequency furnace
Alloy pig；Described copper is the cathode copper that purity is 99.9%, and described aluminium is the industrial refined aluminium that purity is more than 99.9%；
(2) alloy wire is prepared：Described copper-aluminium alloy ingots is gone into the removal of impurity through row turnery processing, contains 5-8% water
30min is soaked in the aqueous solution of based metal surfaces cleaning agent, at 60 DEG C, clear water carries out vacuum and does temperature control after rinsing well
It is dry, the copper-aluminium alloy ingots removed after surface impurity and greasy dirt is then drawn into copper-aluminium alloy wires, the technique of drawing wires
Parameter is：Extrusion temperature is 850 DEG C, and extrusion ratio is 250, and alloy wire size isBy described copper-aluminium alloy wires
The line segment of 3cm is cut on cutting machine；
(3) alloy wire gradient internal oxidition：The copper that will have been cut off-aluminium alloy wires sealing is embedded in equipped with Cu2O：
Al2O3：Cu=6:2:In the internal oxidition device of 2 mixed-powder, the quality of the mixed-powder is the copper-aluminium alloy wires
8 times, successively through the gradient internal oxidition of normal pressure internal oxidition, middle pressure internal oxidition and high pressure internal oxidition three phases in internal oxidition stove
Treatment, obtains copper-aluminium oxide alloy wire rod, and the gradient internal oxidation process parameter is：Normal pressure internal oxidition furnace temperature is 900 DEG C, is protected
Warm 45min；Middle pressure internal oxidition furnace temperature is 830 DEG C, and air pressure is 2atm, is incubated 60min；High pressure internal oxidition furnace temperature is 720 DEG C, air pressure
It is 6.0atm, is incubated 120imin；Further, the high temperature high-pressure resistant material that described internal oxidition device is used, preferably uses
Red copper, described internal oxidition device mainly includes copper tube, red copper inner cap and refractory wass, and described red copper length of tube is
100cm, internal diameter is 10cm, and thickness is 1cm, and described red copper inner cap thickness is 0.6cm, a diameter of 9.5cm, copper tube inner side away from
The back-up ring for respectively having width to be 0.7cm away from the 6cm of two ends, refractory wass is used after copper tube one end first is added a cover into red copper inner cap when using
Sealing, adds the mixed-powder, is sealed with refractory wass after adding a cover the other end with red copper inner cap；Described internal oxidition dress
Put high temperature high voltage resistant functional, sealing is strong, having inner cap to protect will not pollute to mixed-powder.
(4) alloy densification：After the copper-aluminium oxide alloy wire rod is cooled into room temperature and cleaning-drying, using two steps
Sintering process is sintered, and technological parameter is：Described copper-aluminium oxide alloy powder is incubated 2h under 650 DEG C of lower temperatures, so
After be brought rapidly up to 980 DEG C sintering 2h obtain sintered blank, described sintered blank is carried out into hot extrusion is pressed into bar or sheet material coarse fodder,
Hot Extrusion Parameters are：Extrusion temperature is 900 DEG C, and extrusion ratio is 220；
(5) alloy processing：Described bar or sheet material coarse fodder are carried out into drawing or machine-shaping of swaging, is prepared into by specification
Required alloy bar material finished product.
Test example
1st, subjects：Take 40 d0=10mm, L0The copper alloy bar sample of=50mm, is divided into 4 groups, every group 10
Sample, wherein commercially available common disperse copper alloy is set to contrast groups, is set to contrast groups 1 and contrast groups 2, embodiments of the invention
1st, embodiment 2, embodiment 3 are set to experimental group 1, experimental group 2, experimental group 3, above group in addition to composition proportion difference, its
Remaining all same, with comparativity.
Wherein, contrast groups 1：Using powder internal oxidation, the aluminum oxide dispersion that aluminium percentage by weight is 0.65% is prepared strong
Change copper product.
Contrast groups 2：Using thin plate internal oxidition hot extrusion method, the aluminum oxide dispersion that aluminium percentage by weight is 0.65% is prepared strong
Change copper product.
2nd, test method：Each Al2O3 dispersed and strengthened copper-based composite materials that implementation group 1~3 and contrast groups are provided are squeezed
The relevant performance of state is pressed to be detected.Detection method is as follows：(1) tensile strength：Using GB/T228.1-2010《Metal material draws
Stretch experiment》Room temperature test method measuring tensile strength described in middle part 1, wherein d0=10mm, L0=50mm；(2) it is conductive
Rate：The sample of Φ 10mm × 10mm is cut, using eddy-current method, is surveyed with German FoersterSIGMATEST2.069 eddy conductivities
Examination instrument surveys conductance；(3) microhardness：Measured using MH-3 types micro Vickers, load 100g used, load time
10s；(4) softening temperature：Annealing temperature when hardness declines 15% after annealing insulation 1h is softening temperature.
The alumina dispersion-strenghtened copper material As-extruded performance of table 1
| Microhardness/HV | Electrical conductivity/%IACS | Tensile strength/MPa | |
| Contrast groups 1 | 105 | 70.4 | 231 |
| Contrast groups 2 | 119 | 89.9 | 408 |
| Experimental group 1 | 145 | 96.7 | 460 |
| Experimental group 2 | 154 | 97.6 | 486 |
| Experimental group 3 | 167 | 91.1 | 502 |
As it can be seen from table 1 using microhardness, the electricity of experimental group 1-3 alumina dispersion-strenghtened copper materials of the invention
Conductance and tensile strength are superior to the powder internal oxidation and the thin plate internal oxidition hot extrusion method of contrast groups 2 of contrast groups 1, wherein testing
The best performance of group 2.Additionally, the inventive method prepare alumina dispersion-strenghtened copper material hot extrusion state show it is excellent
High temperature resistance softening power, its softening temperature reaches 900 DEG C.
Although the present invention is described and illustrated with reference to its specific embodiment, it will be appreciated by those skilled in the art that
It can be variously modified without departing from the spirit and scope of the present invention, change and replaced.Therefore, the present invention
It is intended to only be limited by the scope of following claims and these claims should be as broadly as possible explained in rational degree.
Claims (6)
1. a kind of alumina dispersion-strenghtened copper-base alloy bar material material, it is characterised in that be that 0.3- is added in copper-based material
The aluminium of 1.5wt%, its preparation method is comprised the steps of：
(1) the molten white silk of alloy：Copper, the aluminium of 0.3-1.5wt% of 98.5-99.7%, the melting in intermediate frequency furnace are taken by weight percentage
Into copper-aluminium alloy ingots；
(2) alloy wire is prepared：Described copper-aluminium alloy ingots is gone into the removal of impurity through row turnery processing, contains the water base gold of 5-8%
15-30min is soaked in the aqueous solution of metal surface cleaning agent, at 40-60 DEG C, clear water carries out vacuum and does temperature control after rinsing well
It is dry, then will remove the copper after surface impurity and greasy dirt-aluminium alloy ingots drawing and dial into copper-aluminium alloy wires, described copper-aluminium is closed
Gold thread material cuts into the line segment of 2-3cm on cutting machine；
(3) alloy wire gradient internal oxidition：The copper that will have been cut off-aluminium alloy wires sealing is embedded in equipped with Cu2O：Al2O3：Cu
=6:2:In the copper tube of 2 mixed-powder, the quality of the mixed-powder is 6-8 times of the copper-aluminium alloy wires, successively
Gradient internal oxidition through normal pressure internal oxidition, middle pressure internal oxidition and high pressure internal oxidition three phases in internal oxidition stove is processed, and is obtained
Copper-aluminium oxide alloy wire rod；
(4) alloy densification：After the copper-aluminium oxide alloy wire rod is cooled into room temperature and cleaning-drying, using two-step sintering
Method is sintered, and sintering temperature is 600-980 DEG C, and time 2-4h obtains sintered blank, and described sintered blank is carried out into hot extrusion compacting
Into bar or sheet material coarse fodder；
(5) alloy processing：Described bar or sheet material coarse fodder are carried out into drawing or machine-shaping of swaging, needed for being prepared into by specification
Alloy bar material finished product.
2. a kind of preparation method of the alumina dispersion-strenghtened copper alloy bar material told such as claim 1, it is characterised in that step
(1) copper described in is the cathode copper that purity is 99.9%, and described aluminium is the industrial refined aluminium that purity is more than 99.9%.
3. a kind of preparation method of alumina dispersion-strenghtened copper alloy bar material as claimed in claim 1, it is characterised in that step
(2) technological parameter of the drawing wires described in is：Extrusion temperature is 650-850 DEG C, and extrusion ratio is 230-250, alloy wire chi
It is very little to be
4. a kind of preparation method of alumina dispersion-strenghtened copper alloy bar material as claimed in claim 1, it is characterised in that step
(4) the gradient internal oxidation process parameter is：Normal pressure internal oxidition furnace temperature is 850-900 DEG C, is incubated 30-45min；Middle pressure internal oxidition
Furnace temperature is 780-830 DEG C, and air pressure is 1.2-2atm, is incubated 30-60min；High pressure internal oxidition furnace temperature is 680-720 DEG C, and air pressure is
5.0-6.0atm, is incubated 60-120imin.
5. a kind of preparation method of alumina dispersion-strenghtened copper alloy bar material as claimed in claim 1, it is characterised in that step
(4) technological parameter of the two-step sintering described in is：By described copper-aluminium oxide alloy powder under 600-650 DEG C of lower temperature
Insulation 1-2h, is then brought rapidly up to 850-980 DEG C of sintering 1-2h.
6. a kind of preparation method of alumina dispersion-strenghtened copper alloy bar material as claimed in claim 1, it is characterised in that it is special
Levy and be, the Hot Extrusion Parameters described in step (4) are：Extrusion temperature is 860-900 DEG C, and extrusion ratio is 200-220.
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| CN108251671A (en) * | 2018-01-08 | 2018-07-06 | 北京科技大学 | A kind of preparation method for adulterating graphene oxide enhancing ODS copper |
| CN110421004A (en) * | 2019-07-30 | 2019-11-08 | 江西理工大学 | A kind of preparation method of alumina dispersion-strenghtened copper bulk board carrying material |
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| CN111378849A (en) * | 2018-12-27 | 2020-07-07 | 南京理工大学 | Preparation method of industrial pure aluminum conductor |
| CN110421004A (en) * | 2019-07-30 | 2019-11-08 | 江西理工大学 | A kind of preparation method of alumina dispersion-strenghtened copper bulk board carrying material |
| CN111036921A (en) * | 2019-12-17 | 2020-04-21 | 陕西斯瑞新材料股份有限公司 | Preparation method of large-size dispersed copper bar |
| CN111957755A (en) * | 2020-07-20 | 2020-11-20 | 华东交通大学 | Drawing process for dispersion copper alloy |
| CN111957755B (en) * | 2020-07-20 | 2022-01-11 | 华东交通大学 | Drawing process for dispersion copper alloy |
| CN112171031A (en) * | 2020-09-15 | 2021-01-05 | 常州特尔玛枪嘴有限公司 | Conductive nozzle, composite bar thereof and manufacturing process |
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| CN113621838A (en) * | 2021-06-29 | 2021-11-09 | 合肥烔创新材料科技合伙企业(有限合伙) | Preparation method of particle dispersion strengthened copper-based composite material |
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