CN105039882B - A kind of equipment preparing precipitation strength type high-strength highly-conductive CuZr alloy - Google Patents
A kind of equipment preparing precipitation strength type high-strength highly-conductive CuZr alloy Download PDFInfo
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- CN105039882B CN105039882B CN201510319139.7A CN201510319139A CN105039882B CN 105039882 B CN105039882 B CN 105039882B CN 201510319139 A CN201510319139 A CN 201510319139A CN 105039882 B CN105039882 B CN 105039882B
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 77
- 239000000956 alloy Substances 0.000 title claims abstract description 77
- 238000001556 precipitation Methods 0.000 title claims abstract description 39
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 28
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims description 32
- 229910017985 Cu—Zr Inorganic materials 0.000 claims description 31
- 230000032683 aging Effects 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 238000011282 treatment Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 238000003801 milling Methods 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 239000000523 sample Substances 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005098 hot rolling Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 4
- 230000036760 body temperature Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000000265 homogenisation Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 description 10
- 229910000881 Cu alloy Inorganic materials 0.000 description 9
- 238000003483 aging Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910001093 Zr alloy Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910000431 copper oxide Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229960000935 dehydrated alcohol Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
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- 238000005266 casting Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- XTYUEDCPRIMJNG-UHFFFAOYSA-N copper zirconium Chemical compound [Cu].[Zr] XTYUEDCPRIMJNG-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
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- 239000002244 precipitate Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- -1 wherein Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Abstract
The present invention provides a kind of equipment preparing precipitation strength type high-strength highly-conductive CuZr alloy, is provided with topping roll and bottom roll including coordinate in zerolling casing, liquid nitrogen container and temperature sensor, described zerolling casing；It is provided with described zerolling wall box and topping roll, the material inlet of bottom roll cooperation and material outlet, described material inlet and material outlet are respectively arranged with slide damper, enable material inlet by the described slide damper that slides and material outlet opens and closes；Multiple shower nozzles are provided with described zerolling cabinet wall, described shower nozzle is connected with liquid nitrogen container by pipeline, and the pipeline between described shower nozzle and liquid nitrogen container is provided with peristaltic pump；Described temperature sensor is arranged on zerolling wall box.The precipitation strength type high-strength highly-conductive CuZr alloy being prepared using equipment of the present invention has excellent mechanical property and electric conductivity.
Description
Technical field
The present invention relates to material technology, more particularly, to a kind of equipment preparing precipitation strength type high-strength highly-conductive CuZr alloy.
Background technology
Copper and copper alloy, due to higher intensity and good electric conductivity, are widely used in track traffic contact line, integrated
Circuit lead frame, resistance welding electrode and miniaturized electronics.The factors such as solid solution atom, crystal defect, crystallite dimension affect copper
The electric conductivity of alloy, wherein, solid solution atom makes Copper substrate produce larger distortion of lattice, and the electric conductivity of copper alloy is greatly lowered
Energy.Therefore, compare and solution strengthening type copper alloy, precipitation strength type copper alloy becomes the focus preparing copper alloy with high strength and high conductivity.
Intensity and electric conductivity are a pair conflicting performances, improve mechanical property and just inevitably reduce electric conductivity.
While the precipitated phase of Dispersed precipitate improves copper alloy intensity, electric conductivity is affected less, thus high-strength highly-conductive can be prepared
Product.CuZr alloy is a kind of typical precipitation strength type copper alloy, traditional thermo-mechanical processi method (hot rolling-solid solution-cold rolling-
Timeliness) certain intensity and good electric conductivity can be obtained, but intensity is difficult to meet growing product demand.
Content of the invention
It is an object of the invention to, it is difficult to meet growing product demand for above-mentioned existing CuZr alloy strength
Problem, proposes a kind of equipment preparing precipitation strength type high-strength highly-conductive CuZr alloy, and this device structure is simple, is prepared into using it
To alloy there is excellent mechanical property and electric conductivity.
For achieving the above object, the technical solution used in the present invention is：One kind prepares precipitation strength type high-strength highly-conductive CuZr
The equipment of alloy, including being provided with of coordinating in zerolling casing, liquid nitrogen container and temperature sensor, described zerolling casing
Topping roll and bottom roll；It is provided with described zerolling wall box and topping roll, the material inlet of bottom roll cooperation and material
Material outlet, described material inlet and material outlet are respectively arranged with slide damper, and by sliding, described slide damper enables material
Material import and material outlet open and close；Multiple shower nozzles are provided with described zerolling cabinet wall, described shower nozzle passes through
Pipeline is connected with liquid nitrogen container, described pipeline is provided with pipe valve, the pipeline between described shower nozzle and liquid nitrogen container is provided with wriggling
Pump；Described temperature sensor is arranged on zerolling wall box, for the change of real-time monitoring the temperature inside the box.
Further, described zerolling casing is double-layer stainless steel casing, is filled with heat-preservation cotton between double-layer stainless steel,
The impact to roll for the ambient temperature can effectively be prevented.
Further, the probe of described temperature sensor is arranged on zerolling cabinet wall, described temperature sensor
Temperature display floater be fixed on zerolling cabinet exterior.
Further, described shower nozzle is 4-6, and described shower nozzle is respectively facing topping roll and bottom roll.
Further, described zerolling casing bottom is provided with backflow collection groove, and pipe is passed through in described groove bottom
Road is connected with liquid nitrogen container, and described pipeline is provided with pipe valve.
Further, it is respectively arranged with anti-icing equipment near described topping roll and bottom roll, in topping roll and bottom roll
During rotation, baffle plate can remove the ice being present on roll, prevents roll icing effect from rolling.
Further, described anti-icing equipment is fixed on zerolling casing for one end, the other end adjacent to topping roll or
The baffle plate of bottom roll, described baffle plate is axially in parallel with topping roll or bottom roll adjacent to one end of topping roll or bottom roll.
Further, described pipeline is double-layer stainless steel pipeline, fills heat-preservation cotton between described double-layer stainless steel.
Another object of the present invention also discloses one kind and prepares precipitation strength type high-strength highly-conductive CuZr using the said equipment
The method of alloy, comprises the following steps：
(1), melting：Cathode copper is placed in smelting furnace, is warming up to 1200～1280 DEG C, be incubated 8～15min, add Cu-
Zr intermediate alloy, is incubated 8～15min, waits to be cooled to 1000～1100 DEG C of steel molds being poured into Cu-Zr alloy through preheating
In；
(2), Homogenization Treatments：The steel mold being cast with Cu-Zr alloy is placed in the box heat treatment furnace of argon protection,
It is incubated 4～8 hours at 850～920 DEG C, cool to room temperature with the furnace；
(3), hot rolling：With the oxide-film of milling machine milling light Cu-Zr alloy surface with after being mingled with, it is incubated 1 at 820～900 DEG C
Hot rolling after～2 hours, is hot-rolled down to 18～25mm thickness, preferably 20mm；
(4), solution treatment：Cu-Zr alloy is placed in the box heat treatment furnace of argon protection, protects at 950～980 DEG C
Temperature 1～3 hour, is quenched with cold water rapidly afterwards；
(5), roll precooling treatment：Make topping roll and bottom roll elder generation low idle, two slide dampers that slide make material enter
Mouth and material outlet are closed, and open temperature sensor, open pipe valve everywhere, start peristaltic pump, adjust liquid nitrogen flow 500-
1000ml/min, optimal 800ml/min, when making zerolling case body temperature reach -150～-180 DEG C, close peristaltic pump, close
Close pipe valve everywhere, two slide dampers that slide make material inlet and material outlet open；
(6), zerolling：After milling machine milling light Cu-Zr alloy surface alumina diaphragm defect, Cu-Zr alloy thickness is processed
To 16～19mm, wrap up the thick copper sheet of one layer of 0.1～0.3mm in Cu-Zr alloy surface, copper sheet is burn-on using electric cautery, in liquid
Soaking 25～40min in nitrogen makes Cu-Zr alloy temperature sufficiently achieve liquid nitrogen temperature (77K), is then immediately placed in preparation and separates out by force
Roll in the equipment of change type high-strength highly-conductive CuZr alloy, until thickness is 1～2mm, preferably 1.5mm, obtain precipitation strength type
High-strength highly-conductive CuZr alloy.Described is to be welded in Cu-Zr alloy surface using electric cautery in Cu-Zr alloy surface one layer of copper sheet of parcel
Last layer copper sheet.
(7), Ageing Treatment：Aging technique is 350～400 DEG C, 90～120min.
Further, cathode copper of the present invention and CuZr intermediate alloy are both needed to carry out pretreatment before use：First
First adopt the cleaning of copper oxide skin abluent, eccysis oxide on surface and impurity；Then use dehydrated alcohol in ultrasonic washing unit
Cleaning surface, dries 1～2h standby at 80～150 DEG C in air dry oven.
Further, in step (1), cathode copper and the material ratio of Cu-Zr intermediate alloy are 160～170:1, preferably
163:1；Described cathode copper purity >=99.97%；In described Cu-Zr intermediate alloy the mass percent shared by Zr be 45～
55%.
Further, the smelting furnace adopting in step (1) is vacuum intermediate-frequency induction melting furnace.
Further, the steel mold temperature of preheating described in step (1) is 300～350 DEG C.Described steel mold is square steel
Mold is it is possible to understand that the present invention also can adopt other shapes mold, but square mold economy is optimal, because using the casting of other molds
In addition it is also necessary to materials processing is become square after making.
Further, in step (3), hot rolling is：Every time pushes 2～3mm, and till rolling 20mm thickness, every time rolls
Need after system to be incubated 7～15min.
Further, the quenching in step (4) quenches for cold water.
Further, in step (6), every time of rapid rolling pushes 1mm, every time terminate after immediately by Cu-Zr alloy
Put in liquid nitrogen, after insulation 8～10min, start next passes.
Further, after step (6), Ageing Treatment, Ageing Treatment are carried out to precipitation strength type high-strength highly-conductive CuZr alloy
Condition is：Temperature 350-400 DEG C, the time is 90-120min.
The present invention adopts zerolling technique, CuZr alloy is immersed in rolling in liquid nitrogen, can effectively suppress the fortune of dislocation
Move and dynamic recovery, thus significantly crystal grain thinning, CuZr alloy stores a large amount of mechanical energy to promote follow-up timeliness mistake
Journey and promote the process of follow-up Precipitation.
Prepare the precipitation strength type copper zirconium with more excellent in strength and electric conductivity by improving the rolling mill practice present invention
Alloy., its optimal synthesis performance is after testing taking Cu-0.3% (mass fraction) Zr alloy as a example：Tensile strength 602Mpa, electricity
Conductance 81.4%IACS, compared with conventional thermal machinery handling process, tensile strength lifting 12.5%, and electrical conductivity only declines 3%
IACS.Tensile strength 634Mpa during highest mechanical performance, electrical conductivity 74.6%IACS, compared with conventional thermal machinery handling process
Tensile strength lifting 13.4%, and electrical conductivity only declines 3%IACS.Present invention accomplishes different product pair in practical application in industry
Mechanical performance and the demand of electric conductivity, obtain the performance more excellent than traditional preparation methods.
Present invention also offers a kind of precipitation strength type high-strength highly-conductive CuZr alloy, it is prepared from using the said equipment.
The invention discloses a kind of equipment preparing precipitation strength type high-strength highly-conductive CuZr alloy, it is simple and reasonable for structure,
Compact, there is advantages below compared with prior art：
(1) to -150～-180 DEG C, this temperature can effectively suppress in the operation of rolling this equipment energy effective control rolling temperature
The reply of dislocation；
(2) this equipment enable large-scale continuous production prepare Ultra-fine Grained product (precipitation strength type high-strength highly-conductive CuZr close
Gold)；
(3) product mechanical property adopting the preparation of this equipment is better than traditional room temperature rolling, the copper alloy with high strength and high conductivity of preparation
Combination property is more preferably.
Brief description
Fig. 1 is the structural representation of the equipment of preparation precipitation strength type high-strength highly-conductive CuZr alloy；
Fig. 2 is the structural representation of shower nozzle；
Fig. 3 is timeliness firmness change curve when traditional room temperature rolling and zerolling etc.；
Fig. 4 is the change curve of timeliness electrical conductivity when traditional room temperature rolling and zerolling etc.；
Fig. 5 is the change curve of hardness during traditional room temperature rolling and 350 DEG C and 400 DEG C isothermal agings of zerolling；
Fig. 6 is conductance profiles during traditional room temperature rolling and 350 DEG C and 400 DEG C isothermal agings of zerolling；
Fig. 7 is the engineering stress-engineering strain curve of 350 DEG C of timeliness 120min and 400 DEG C of timeliness 90min, and wherein (A) is low
Warm-rolling system, timeliness 90min at 400 DEG C；(B) traditional room temperature rolling, timeliness 90min at 400 DEG C；(C) zerolling, at 350 DEG C
Timeliness 120min；(D) traditional room temperature rolling, timeliness 120min at 400 DEG C.
Specific embodiment
The present invention is further described with reference to embodiments：
Embodiment 1
Present embodiment discloses a kind of equipment preparing precipitation strength type high-strength highly-conductive CuZr alloy, as shown in figure 1, include
Zerolling casing 1, liquid nitrogen container 2 and temperature sensor 3, described zerolling casing 1 is double-layer stainless steel rectangular box, double-deck
It is filled with heat-preservation cotton between rustless steel, can effectively reduce or prevent the impact to roll for the ambient temperature.
In described zerolling casing 1, cooperation is provided with topping roll 4 and bottom roll 5；Described zerolling casing 1 side wall
On be provided with and topping roll 4, the material inlet of bottom roll 5 cooperation and material outlet, described material inlet and material outlet are respectively
It is provided with slide damper 6, material inlet is enabled by the described slide damper 6 that slides and material outlet opens and closes；I.e. real
The unlatching of existing zerolling casing 1 and closing.
Four shower nozzles 7 are provided with described zerolling casing 1 inwall, two shower nozzles 7 towards topping roll, two shower nozzles 7
Towards bottom roll, the liquid nitrogen that shower nozzle sprays is enable to be sprayed directly on topping roll and bottom roll.In order to ensure the uniformity sprayed,
The structure of described shower nozzle 7 is as shown in Figure 2.Described shower nozzle 7 is connected with liquid nitrogen container 2 by pipeline, and described pipeline is provided with pipe valve,
It is provided with peristaltic pump 8 on pipeline between described shower nozzle 7 and liquid nitrogen container 2；
Described temperature sensor 3 is arranged on zerolling casing 1 side wall, for the change of real-time monitoring case body temperature.
Specifically, the probe of described temperature sensor is arranged on zerolling cabinet wall, and the temperature of described temperature sensor shows
Panel is fixed on zerolling cabinet exterior.
Described zerolling casing bottom is provided with backflow collection groove, and pipeline and liquid nitrogen container are passed through in described groove bottom
Connect, described pipeline is provided with pipe valve.Described pipeline is double-layer stainless steel pipeline, filling insulation between described double-layer stainless steel
Cotton.
It is respectively arranged with anti-icing equipment 9 near described topping roll and bottom roll, when topping roll and bottom roll rotate, gear
Plate can remove the ice being present on roll, prevents roll icing effect from rolling.Specifically, described anti-icing equipment is fixed for one end
On zerolling casing, adjacent to the baffle plate of topping roll or bottom roll, described baffle plate is adjacent to topping roll or bottom roll for the other end
One end is axially in parallel with topping roll or bottom roll.
The step preparing precipitation strength type high-strength highly-conductive CuZr alloy using the present embodiment equipment is as follows：
Pre-treatment of raw material
(1) by 2484.7g tough cathode (purity >=99.97%, mass fraction, similarly hereinafter), 15.28gCuZr intermediate alloy
(49.09%Zr) cleaned with copper oxide skin abluent, eccysis oxide on surface and impurity；
(2) clean surface in ultrasonic washing unit with dehydrated alcohol, at 100 DEG C in air dry oven, dry 2h.
Prepared by high-strength highly-conductive CuZr alloy
(1) melting：Using vacuum intermediate-frequency induction melting furnace, cathode copper is placed in smelting furnace, protects after being warming up to 1250 DEG C
Warm 10min, adds Cu-Zr intermediate alloy, is incubated 10min, waits to be cooled to 1050 DEG C of square steel being poured into through 350 DEG C of preheatings
In mold.
(2) Homogenization Treatments：The steel mold being cast with Cu-Zr alloy is placed in the box heat treatment furnace of argon protection,
It is incubated 5 hours at 900 DEG C, furnace cooling.
(3) hot rolling：With milling machine milling light Cu-Zr alloy surface oxide-film, be mingled with etc. after, heat after 850 DEG C of insulations 1 hour
Roll, every time pushes 3mm, thick by 30mm thick rolling 20mm after 6 passages, need to be incubated 10min after every time rolling.
(4) solution treatment：Cu-Zr alloy is placed in the box heat treatment furnace of argon protection, at 972 DEG C, insulation 1 is little
When, quenched with cold water rapidly afterwards.
(5) roll precooling treatment：Make topping roll and bottom roll elder generation low idle, two slide dampers that slide make material inlet
Close with material outlet, open temperature sensor, open pipe valve everywhere, start peristaltic pump, adjust liquid nitrogen flow 500-1000ml/
Min, optimal 800ml/min, when making zerolling case body temperature reach -150～-180 DEG C, close peristaltic pump, close everywhere
Pipe valve, two slide dampers that slide make material inlet and material outlet open；
Roll elder generation low idle, closes former and later two slidably baffle plates, opens temperature sensor, open pipe valve everywhere, open
Dynamic peristaltic pump, adjusts flow 800ml/min.When band the temperature inside the box reaches -160 DEG C, close peristaltic pump, close pipe valve everywhere, beat
Open former and later two slidably baffle plates.
(6) zerolling：After the defects such as milling machine milling light Cu-Zr alloy surface oxide-film, Cu-Zr alloy thickness is processed
To 18mm.Wrap up the thick copper sheet of one layer of 0.1mm in Cu-Zr alloy surface, soaking 30min in liquid nitrogen makes Cu-Zr alloy temperature
Sufficiently achieve liquid nitrogen temperature (77K), be then immediately placed in the equipment of preparation precipitation strength type high-strength highly-conductive CuZr alloy and roll,
Every time pushes 1mm, until 1.5mm, obtains precipitation strength type high-strength highly-conductive CuZr alloy.Every time will DEG C be put after terminating immediately
Enter in liquid nitrogen, after insulation 10min, start lower a time.
(7) Ageing Treatment：Take 10 × 10mm from the precipitation strength type high-strength highly-conductive CuZr alloy that step (6) obtains2Sample
Product are some, respectively 100 DEG C, 150 DEG C, 200 DEG C, 250 DEG C, 300 DEG C, 325 DEG C, 350 DEG C, 375 DEG C, 400 DEG C, 425 DEG C, 450
DEG C, 475 DEG C, carry out timeliness when 1 hour etc. at 500 DEG C；After above-mentioned aging samples are mechanically polished, measure micro-vickers hardness,
10 points at least tested by each sample, and find out the corresponding temperature of hardness number peak value.Choose 350 DEG C and 400 DEG C of two temperature, point
Do not carry out the isothermal aging of 30min, 60min, 90min, 120min, 150min, 180min, 210min, after mechanical polishing, measurement
Micro-vickers hardness.
(8) determine optimum aging technique：Test the electrical conductivity of all aging samples respectively, by hardness and electrical conductivity test
Finding out the corresponding aging technique of optimal synthesis performance is 400 DEG C, 90min, obtains the corresponding aging technique of highest mechanical performance and is
350℃、120min.
The present embodiment compared for the mechanical property of Cu-Zr alloy and the electric conductivity that traditional room temperature rolling and zerolling obtain
Can, as seen in figures 3-6：
Fig. 3 is traditional room temperature rolling with timeliness firmness change curve during zerolling etc. it is seen then that embodiment of the present invention low temperature
Prepare precipitation strength type high-strength highly-conductive CuZr alloy ratio compared with traditional room temperature rolling, hardness is obviously improved, low temperature
Prepare precipitation strength type high-strength highly-conductive CuZr alloy hardness in 350 DEG C of timeliness 1h and reach peak value, and traditional room temperature
Rolling just reaches peak value in 400 DEG C of timeliness 1h.Therefore, choose 350 DEG C and 400 DEG C and carry out next step isothermal aging.
Fig. 4 is the change curve of timeliness electrical conductivity when traditional room temperature rolling and zerolling etc. it is seen then that prepared by zerolling
Obtain precipitation strength type high-strength highly-conductive CuZr alloy while improving intensity, electrical conductivity declines seldom.
The change song being hardness during traditional room temperature rolling and 350 DEG C and 400 DEG C isothermal agings of zerolling as Fig. 5
Line is it is seen that zerolling prepares precipitation strength type high-strength highly-conductive CuZr alloy ratio room temperature rolling hardness height.
Fig. 6 is the change song of conductivity during traditional room temperature rolling and 350 DEG C and 400 DEG C isothermal agings of zerolling
Line, comprehensive Fig. 3 and Fig. 4 is visible, and zerolling sample can obtain highest mechanical property in 350 DEG C of timeliness 120min, at 400 DEG C
More excellent combination property can be obtained, i.e. good mechanical performance and electric conductivity during timeliness 90min.
Fig. 7 is the engineering stress-engineering strain curve of 350 DEG C of timeliness 120min and 400 DEG C of timeliness 90min, and in figure is permissible
Find out that zerolling sample obtains maximum pulling strength 634Mpa in 350 DEG C of timeliness 120min, now electrical conductivity is 74.6%
IACS, and under the same terms, traditional room temperature rolling tensile strength is 559Mpa, electrical conductivity is 78.73%IACS.Zerolling sample
Product tensile strength 602Mpa in 400 DEG C of timeliness 90min, electrical conductivity 81.4%IACS, and traditional room temperature rolling under the same terms
Tensile strength is 535Mpa, and electrical conductivity is 84.73%IACS.
The present embodiment prepares after testing the mechanical property of precipitation strength type high-strength highly-conductive CuZr alloy and electric conductivity
Can be as shown in table 1：
Table 1 the present embodiment zerolling and traditional room temperature rolling mechanical property and electric conductivity contrast
The present invention develops the preparation technology preparing optimal synthesis performance and maximum pulling strength, compared with traditional handicraft,
Mechanical performance lifting at least 12%, and conductance only reduces 3%IACS.Tensile strength 602Mpa, electrical conductivity are prepared in success
Cu-0.3% (mass fraction) the Zr alloy of 81.4%IACS, compared with conventional thermal machinery handling process, tensile strength is lifted
12.5%, and electrical conductivity only declines 3%IACS.
Finally it should be noted that：Various embodiments above only in order to technical scheme to be described, is not intended to limit；To the greatest extent
Pipe has been described in detail to the present invention with reference to foregoing embodiments, it will be understood by those within the art that：Its according to
So the technical scheme described in foregoing embodiments can be modified, or wherein some or all of technical characteristic is entered
Row equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (9)
1. a kind of equipment preparing precipitation strength type high-strength highly-conductive CuZr alloy is it is characterised in that include zerolling casing, liquid
Nitrogen tank and temperature sensor, in described zerolling casing, cooperation is provided with topping roll and bottom roll；Described zerolling case
It is provided with body sidewall and topping roll, the material inlet of bottom roll cooperation and material outlet, described material inlet and material outlet
It is respectively arranged with slide damper, material inlet is enabled by the described slide damper that slides and material outlet opens and closes；Institute
State and multiple shower nozzles are provided with zerolling cabinet wall, described shower nozzle is connected with liquid nitrogen container by pipeline, described shower nozzle and liquid
It is provided with peristaltic pump on pipeline between nitrogen tank；Described temperature sensor is arranged on zerolling wall box.
2. prepare the equipment of precipitation strength type high-strength highly-conductive CuZr alloy according to claim 1 it is characterised in that described low
Warm-rolling casing is double-layer stainless steel casing, is filled with heat-preservation cotton between double-layer stainless steel.
3. prepare the equipment of precipitation strength type high-strength highly-conductive CuZr alloy according to claim 1 it is characterised in that described temperature
The probe of degree sensor is arranged on zerolling cabinet wall, and the temperature display floater of described temperature sensor is fixed on low temperature
On rolling cabinet exterior.
4. prepare the equipment of precipitation strength type high-strength highly-conductive CuZr alloy according to claim 1 it is characterised in that described spray
Head is 4-6.
5. prepare the equipment of precipitation strength type high-strength highly-conductive CuZr alloy according to claim 1 it is characterised in that described low
Warm-rolling casing bottom is provided with backflow collection groove, and described groove bottom is connected with liquid nitrogen container by pipeline, described pipeline
On be provided with pipe valve.
6. prepare the equipment of precipitation strength type high-strength highly-conductive CuZr alloy according to claim 1 it is characterised in that on described
It is respectively arranged with anti-icing equipment near roll and bottom roll.
7. prepare the equipment of precipitation strength type high-strength highly-conductive CuZr alloy according to claim 6 it is characterised in that described prevent
Icing device is fixed on zerolling casing for one end, and, adjacent to the baffle plate of topping roll or bottom roll, described baffle plate is adjacent for the other end
One end of nearly topping roll or bottom roll is axially in parallel with topping roll or bottom roll.
8. prepare the equipment of precipitation strength type high-strength highly-conductive CuZr alloy according to claim 1 it is characterised in that described pipe
Road is double-layer stainless steel pipeline, fills heat-preservation cotton between described double-layer stainless steel.
9. equipment described in a kind of employing claim 1-8 any one prepares the side of precipitation strength type high-strength highly-conductive CuZr alloy
Method is it is characterised in that comprise the following steps：
(1), melting：Cathode copper is placed in smelting furnace, is warming up to 1200～1280 DEG C, be incubated 8～15min, add in Cu-Zr
Between alloy, be incubated 8～15min, wait to be cooled to 1000～1100 DEG C and Cu-Zr alloy is poured in the steel mold of preheating；
(2), Homogenization Treatments：The steel mold being cast with Cu-Zr alloy is placed in the box heat treatment furnace of argon protection,
It is incubated 4～8 hours at 850～920 DEG C, cool to room temperature with the furnace；
(3), hot rolling：With the oxide-film of milling machine milling light Cu-Zr alloy surface with after being mingled with, at 820～900 DEG C, insulation 1～2 is little
When after hot rolling, be hot-rolled down to 18～25mm thick；
(4), solution treatment：Cu-Zr alloy is placed in the box heat treatment furnace of argon protection, is incubated 1 at 950～980 DEG C
～3 hours, quenched with cold water rapidly afterwards；
(5), roll precooling treatment：Make topping roll and bottom roll elder generation low idle, two slide dampers of sliding make material inlet and
Material outlet is closed, and opens temperature sensor, opens pipe valve everywhere, starts peristaltic pump, adjusts liquid nitrogen flow 500-1000ml/
Min, when making zerolling case body temperature reach -150～-180 DEG C, closes peristaltic pump, closes pipe valve everywhere, two cunnings of sliding
Dynamic baffle plate makes material inlet and material outlet open；
(6), zerolling：After milling machine milling light Cu-Zr alloy surface alumina diaphragm defect, Cu-Zr alloy thickness is machined to 16
～19mm, wraps up the thick copper sheet of one layer of 0.1～0.3mm in Cu-Zr alloy surface, copper sheet is burn-on using electric cautery, in liquid nitrogen
Soaking 25～40min makes Cu-Zr alloy temperature sufficiently achieve liquid nitrogen temperature (77K), is then immediately placed in preparation precipitation strength type
Roll in the equipment of high-strength highly-conductive CuZr alloy, until thickness is 1～2mm, obtain precipitation strength type high-strength highly-conductive CuZr alloy；
(7), Ageing Treatment：Aging technique is 350～400 DEG C, 90～120min.
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| CN107586994B (en) * | 2017-10-16 | 2019-03-05 | 南京工程学院 | A kind of high conductivity copper alloy and preparation method thereof |
| CN109746268A (en) * | 2019-01-16 | 2019-05-14 | 中南大学 | A kind of monolithic band intelligence deep cooling experimental mill and milling method with tension |
| CN109746269A (en) * | 2019-01-16 | 2019-05-14 | 中南大学 | A kind of asynchronous experimental mill of monolithic band intelligence deep cooling friction speed and milling method with tension |
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| CN102108451A (en) * | 2011-02-15 | 2011-06-29 | 常州大学 | Preparation method of copper alloys with high strength and high electric conductivity |
| CN103352137A (en) * | 2013-07-22 | 2013-10-16 | 陕西斯瑞工业有限责任公司 | High-strength and high-conductivity copper alloy for power switch spring contact and preparation method of high-strength and high-conductivity copper alloy |
| CN104388859A (en) * | 2014-11-18 | 2015-03-04 | 昆明理工大学 | Method for simultaneously improving strength and plasticity of copper aluminum alloy |
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| JPH04254558A (en) * | 1991-02-06 | 1992-09-09 | Showa Electric Wire & Cable Co Ltd | Production of copper wire for electric conduction |
| JP3490853B2 (en) * | 1996-11-08 | 2004-01-26 | 独立行政法人物質・材料研究機構 | High-strength, high-conductivity, high-chromium-containing copper alloy material and method for producing the same |
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| CN102108451A (en) * | 2011-02-15 | 2011-06-29 | 常州大学 | Preparation method of copper alloys with high strength and high electric conductivity |
| CN103352137A (en) * | 2013-07-22 | 2013-10-16 | 陕西斯瑞工业有限责任公司 | High-strength and high-conductivity copper alloy for power switch spring contact and preparation method of high-strength and high-conductivity copper alloy |
| CN104388859A (en) * | 2014-11-18 | 2015-03-04 | 昆明理工大学 | Method for simultaneously improving strength and plasticity of copper aluminum alloy |
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