CN105088000B - A kind of high-strength highly-conductive contact line rare-earth copper alloy and preparation method thereof - Google Patents
A kind of high-strength highly-conductive contact line rare-earth copper alloy and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of high-strength highly-conductive contact line rare-earth copper alloy and preparation method thereof, the rare-earth copper alloy is made up of chromium, zirconium, zinc, titanium, silver, copper and rare earth element and inevitable impurity element, during preparation, Cu Zr intermediate alloys and Cu rare earth intermediate alloys are prepared first, then it is formed into ingot casting with copper, zinc, silver, titanium melting mold, ingot casting hot extrusion obtains bar stock, to bar stock solution treatment, the alloy drawing deformation that will be obtained after treatment, Ageing Treatment is carried out after drawing deformation, that is, high-strength highly-conductive rare-earth copper alloy is obtained.The present invention can greatly improve conductance, elongation percentage, alloy strength and the anti-softening temperature of alloy；Significantly improve the machining property of alloy；The manufacturability of alloy can be changed, beneficial to refining, degasification and microalloying；Requirement of the contact line industrial circle material to copper alloy performance can preferably be met.Preparation process of the present invention is simple, technological process is short, intensity is high, good conductivity, hot-working character are excellent.
Description
Technical field
The present invention relates to Cu alloy material technical field, and in particular to a kind of high-strength highly-conductive contact line rare-earth copper alloy and
Its preparation method.
Background technology
Electrification railway contact net is the important component of electric railway, it mainly by contact line, current carrying catenary,
Not current carrying catenary and dropper（Line）Constituted Deng part, wherein contact line is incited somebody to action by with electric locomotive pantograph sliding plate directly contact
Electric energy is transferred to locomotive from traction substation, is the key member for ensureing electric railway normal operation.The railway developed at present
Contact line alloy has Cu-Ag, Cu-Mg, Cu-Sn and Cu-Cr-Zr alloy, and wherein Cu-Cr-Zr alloys are used as railway contact line
Alloy has high intensity, high conductivity, wearability high and softening temperature high, is considered both at home and abroad optimal at present
Contact line alloy.The Chinese invention patent of the A of Publication No. CN 101386925 discloses a kind of contact line Cu-Cr-Zr alloys
Preparation technology, the alloy prepared by the technique, its tensile strength is big, and not less than 590MPa, but its conductance is not high, only
77%IACS。
The content of the invention
It is an object of the invention to provide a kind of high-strength highly-conductive contact line rare-earth copper alloy and preparation method thereof.
In order to solve the above technical problems, the basic conception of the technical solution adopted in the present invention is：A kind of high-strength highly-conductive connects
Line rare-earth copper alloy is touched, the rare-earth copper alloy is by chromium, zirconium, zinc, titanium, silver, copper and rare earth element and inevitable impurity
Element is constituted, and the percentage by weight that each component accounts for rare-earth copper alloy total amount is chromium 0.2-0.8%, zirconium 0.1-0.5%, zinc 0.1-
0.4%, titanium 0.1-0.5%, silver-colored 0.1-0.4%, rare earth element 0.02-0.1%, balance of copper and inevitable impurity element.
Preferably, described rare earth element be cerium, iridium in one or two.
Preferably, when described rare earth element is added in the form of being mixed with two kinds, the weight ratio of iridium and cerium is 0.5-1.
A kind of preparation method of high-strength highly-conductive contact line rare-earth copper alloy, comprises the following steps：
Step one, prepare intermediate alloy：Copper, zirconium are put into vacuum non-consumable electrode arc melting stove carries out melting, takes out
Pressure is 0.05Pa in vacuum to stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1050-1100 DEG C, melting
0.5-1h, obtains Cu-Zr intermediate alloys after natural cooling, standby；Copper, rare earth are put into vacuum non-consumable electrode arc melting stove
Melting is inside carried out, it is 0.05Pa to be evacuated to pressure in stove, it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to
1030-1070 DEG C, melting 0.5-1h obtains Cu- rare earth intermediate alloys after natural cooling, standby；
Step 2, melting, mold：By in copper, zinc, silver, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Between alloy be put into melting carried out in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove
Interior pressure is 0.05MPa, controls smelting temperature for 1200-1300 DEG C, and mold is injected after melting, forms ingot casting, described to pour temperature
Degree control is at 1150-1200 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 850-950 DEG C, 1-3 hours is incubated, then hot extrusion
It is pressed into bar, extrusion ratio 5-10:1, obtain bar stock；
Step 4, solution treatment：The bar stock that step 3 is obtained is fitted into heat-treatment furnace, it is small to be incubated 1-2 at 850-900 DEG C
When, water quenching is then carried out, obtain alloy standby；
Step 5, drawing deformation：The alloy obtained after step 4 solution treatment is carried out into drawing deformation, deflection is 40-
80%；
Step 6, Ageing Treatment and drawing deformation：Alloy after step 5 drawing deformation is carried out into Ageing Treatment, timeliness temperature
It is 450-550 DEG C to spend, and is incubated 2-10 hours, and drawing deformation is carried out afterwards, and deflection is 20-80%, that is, high-strength highly-conductive rare earth is obtained
Copper alloy.
Preferably, the method for the step 6 Ageing Treatment and drawing deformation is：First protected at 450-500 DEG C of aging temp
It is warm 2-4 hours, first time drawing deformation is carried out, deflection is 40-80%；Then it is incubated 2-4 at 450-550 DEG C of aging temp
Hour, then second drawing deformation is carried out, deflection is 40-80%.
Preferably, the method for the step 6 Ageing Treatment and drawing deformation is：First 2 are incubated at 460 DEG C of aging temp
Hour, first time drawing deformation is carried out, deflection is 40%；2-4 hours is incubated at 450 DEG C of aging temp afterwards, second is carried out
Secondary drawing deformation, deflection is 40-60%；Then 2 hours are incubated at 450 DEG C of aging temp, then carry out third time drawing change
Shape, deflection is 60%.
Beneficial effect
（1）The present invention adds silver, zinc, titanium and micro rare earth element on the basis of Cu-Cr-Zr alloys, wherein, plus
Entering silver can greatly improve the conductance of alloy, also can simultaneously improve the elongation percentage of alloy；Add zinc can improve alloy strength,
The machining property of alloy can be significantly improved simultaneously；Adding titanium can fully improve the elongation percentage of alloy, improve the anti-of alloy
Softening temperature；Adding rare earth element can not only change the manufacturability of alloy, beneficial to refining, degasification and microalloying, can be with
Improve tensile strength, hardness, conductance, softening temperature, elongation percentage of alloy etc..Because adding zinc and titanium amount can excessively influence to close
The electric conductivity of gold, so the addition of zinc and titanium is respectively 0.1-0.4% and 0.1-0.5%.
（2）In preparation process, using multiple Ageing Treatment and the operating method of multiple drawing deformation, precipitation can be improved
The nucleation site of phase, and precipitated phase precipitation is more, then the intensity and conductance of alloy are higher.
（3）Composition and its ratio by limiting alloy of the invention, makes each composition comprehensive function, significantly improves alloy material
The combination property of material, can preferably meet requirement of the contact line industrial circle material to copper alloy performance.Copper of the invention is closed
Gold utensil has that preparation process is simple, technological process is short, high strength ＆ high electric-conduction, excellent hot-working character the features such as, its tensile strength
Up to 673MPa.
Specific embodiment
With reference to specific embodiment, the present invention is further detailed explanation.
A kind of high-strength highly-conductive contact line rare-earth copper alloy, the rare-earth copper alloy is by chromium, zirconium, zinc, titanium, silver, copper and rare earth
Element and inevitable impurity element are constituted, and the percentage by weight that each component accounts for rare-earth copper alloy total amount is chromium 0.2-
0.8%, zirconium 0.1-0.5%, zinc 0.1-0.4%, titanium 0.1-0.5%, silver-colored 0.1-0.4%, rare earth element 0.02-0.1%, balance of copper and
Inevitable impurity element.
Preferably, described rare earth element be cerium, iridium in one or two.
Preferably, when described rare earth element is added in the form of being mixed with two kinds, the weight ratio of iridium and cerium is 0.5-1.
A kind of preparation method of high-strength highly-conductive contact line rare-earth copper alloy is comprised the following steps：
Step one, prepare intermediate alloy：Copper, zirconium are put into vacuum non-consumable electrode arc melting stove carries out melting, takes out
Pressure is 0.05Pa in vacuum to stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1050-1100 DEG C, melting
0.5-1h, obtains Cu-Zr intermediate alloys after natural cooling, standby；Copper, rare earth are put into vacuum non-consumable electrode arc melting stove
Melting is inside carried out, it is 0.05Pa to be evacuated to pressure in stove, it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to
1030-1070 DEG C, melting 0.5-1h obtains Cu- rare earth intermediate alloys after natural cooling, standby；
Step 2, melting, mold：By in copper, zinc, silver, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Between alloy be put into melting carried out in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove
Interior pressure is 0.05MPa, controls smelting temperature for 1200-1300 DEG C, and mold is injected after melting, forms ingot casting, described to pour temperature
Degree control is at 1150-1200 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 850-950 DEG C, 1-3 hours is incubated, then hot extrusion
It is pressed into bar, extrusion ratio 5-10:1, obtain bar stock；
Step 4, solution treatment：The bar stock that step 3 is obtained is fitted into heat-treatment furnace, it is small to be incubated 1-2 at 850-900 DEG C
When, water quenching is then carried out, obtain alloy standby；
Step 5, drawing deformation：The alloy obtained after step 4 solution treatment is carried out into drawing deformation, deflection is 40-
80%；
Step 6, Ageing Treatment and drawing deformation：Alloy after step 5 drawing deformation is carried out into Ageing Treatment, timeliness temperature
It is 450-550 DEG C to spend, and is incubated 2-10 hours, and drawing deformation is carried out afterwards, and deflection is 20-80%, that is, high-strength highly-conductive rare earth is obtained
Copper alloy.
Preferably, the method for the step 6 Ageing Treatment and drawing deformation is：First protected at 450-500 DEG C of aging temp
It is warm 2-4 hours, first time drawing deformation is carried out, deflection is 40-80%；Then it is incubated 2-4 at 450-550 DEG C of aging temp
Hour, then second drawing deformation is carried out, deflection is 40-80%.
Preferably, the method for the step 6 Ageing Treatment and drawing deformation is：First 2 are incubated at 460 DEG C of aging temp
Hour, first time drawing deformation is carried out, deflection is 40%；2-4 hours is incubated at 450 DEG C of aging temp afterwards, second is carried out
Secondary drawing deformation, deflection is 40-60%；Then 2 hours are incubated at 450 DEG C of aging temp, then carry out third time drawing change
Shape, deflection is 60%.
Embodiment 1
A kind of high-strength highly-conductive contact line rare-earth copper alloy, the rare-earth copper alloy is by chromium, zirconium, zinc, titanium, silver, copper and dilute
Earth elements and inevitable impurity element are constituted, and the percentage by weight that each component accounts for rare-earth copper alloy total amount is chromium 0.2%,
Zirconium 0.2%, silver 0.1%, zinc 0.2%, titanium 0.3%, cerium 0.02%, iridium 0.02%, balance of copper and inevitable impurity element.
Specifically preparation method is：
Step one, prepare intermediate alloy：Copper, zirconium are put into vacuum non-consumable electrode arc melting stove carries out melting, takes out
Pressure is 0.05Pa in vacuum to stove, and it is 0.05MPa to be then charged with argon gas to stove pressure, is heated to 1050 DEG C, melting 1h, from
Cu-Zr intermediate alloys so are obtained after cooling, it is standby；Copper, rare earth are put into vacuum non-consumable electrode arc melting stove and are melted
Refining, it is 0.05Pa to be evacuated to pressure in stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1030 DEG C, melting
1h, obtains Cu- rare earth intermediate alloys after natural cooling, standby；
Step 2, melting, mold：By in copper, silver, zinc, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Between alloy be put into melting carried out in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove
Interior pressure is 0.05MPa, controls smelting temperature for 1200 DEG C, and mold is injected after melting, forms ingot casting, the placing temperature control
At 1150 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 850 DEG C, 2 hours are incubated, rod is then hot extruded into
Material, extrusion ratio 8:1, obtain bar stock；
Step 4, solution treatment：The bar stock of step 3 is fitted into heat-treatment furnace, 1 hour is incubated at 850 DEG C, Ran Houjin
Water-filling is quenched；
Step 5, drawing deformation：Alloy after step 4 solution treatment is carried out into drawing deformation, deflection is 40%；
Step 6, Ageing Treatment and drawing deformation：Alloy after step 5 drawing deformation is carried out into Ageing Treatment, first when
2 hours are incubated at 450 DEG C of temperature of effect, first time drawing deformation is carried out, deflection is 50%, then protected at 450 DEG C of aging temp
Temperature 2 hours, then second drawing deformation is carried out, deflection is 60%.
Alloy property is shown in Table 1.
Embodiment 2
A kind of high-strength highly-conductive contact line rare-earth copper alloy, the rare-earth copper alloy is by chromium, zirconium, zinc, titanium, silver, copper and dilute
Earth elements and inevitable impurity element are constituted, and the percentage by weight that each component accounts for rare-earth copper alloy total amount is 0.3%
Chromium, 0.2% zirconium, 0.15% silver, 0.2% zinc, 0.2% titanium, 0.05% cerium, balance of copper and inevitable impurity unit
Element.
Specifically preparation method is：
Step one, prepare intermediate alloy：Copper, zirconium are put into vacuum non-consumable electrode arc melting stove carries out melting, takes out
Pressure is 0.05Pa in vacuum to stove, and it is 0.05MPa to be then charged with argon gas to stove pressure, is heated to 1050 DEG C, melting 1h, from
Cu-Zr intermediate alloys so are obtained after cooling, it is standby；Copper, rare earth are put into vacuum non-consumable electrode arc melting stove and are melted
Refining, it is 0.05Pa to be evacuated to pressure in stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1035 DEG C, melting
1h, obtains Cu- rare earth intermediate alloys after natural cooling, standby；
Step 2, melting, mold：By in copper, silver, zinc, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Between alloy be put into melting carried out in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove
Interior pressure is 0.05MPa, controls smelting temperature for 1210 DEG C, and mold is injected after melting, forms ingot casting, the placing temperature control
At 1155 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 860 DEG C, 2 hours are incubated, rod is then hot extruded into
Material, extrusion ratio 8:1, obtain bar stock；
Step 4, solution treatment：The bar stock of step 3 is fitted into heat-treatment furnace, 1 hour is incubated at 860 DEG C, Ran Houjin
Water-filling is quenched；
Step 5, drawing deformation：Alloy after step 4 solution treatment is carried out into drawing deformation, deflection is 40%；
Step 6, Ageing Treatment and drawing deformation：Alloy after step 5 drawing deformation is carried out into Ageing Treatment, first when
2 hours are incubated at 450 DEG C of temperature of effect, first time drawing deformation is carried out, deflection is 50%, then protected at 450 DEG C of aging temp
Temperature 2 hours, then second drawing deformation is carried out, deflection is 60%.
Alloy property is shown in Table 1.
Embodiment 3
A kind of high-strength highly-conductive contact line rare-earth copper alloy, the rare-earth copper alloy is by chromium, zirconium, zinc, titanium, silver, copper and dilute
Earth elements and inevitable impurity element are constituted, and the percentage by weight that each component accounts for rare-earth copper alloy total amount is 0.3%
Chromium, 0.3% zirconium, 0.1% silver, 0.3% zinc, 0.2% titanium, 0.05% iridium, balance of copper and inevitable impurity unit
Element.
Specifically preparation method is：
Step one, prepare intermediate alloy：Copper, zirconium are put into vacuum non-consumable electrode arc melting stove carries out melting, takes out
Pressure is 0.05Pa in vacuum to stove, and it is 0.05MPa to be then charged with argon gas to stove pressure, is heated to 1060 DEG C, melting 1h, from
Cu-Zr intermediate alloys so are obtained after cooling, it is standby；Copper, rare earth are put into vacuum non-consumable electrode arc melting stove and are melted
Refining, it is 0.05Pa to be evacuated to pressure in stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1040 DEG C, melting
1h, obtains Cu- rare earth intermediate alloys after natural cooling, standby；
Step 2, melting, mold：By in copper, silver, zinc, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Between alloy be put into melting carried out in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove
Interior pressure is 0.05MPa, controls smelting temperature for 1220 DEG C, and mold is injected after melting, forms ingot casting, the placing temperature control
At 1160 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 870 DEG C, 2 hours are incubated, rod is then hot extruded into
Material, extrusion ratio 9:1, obtain bar stock；
Step 4, solution treatment：The bar stock of step 3 is fitted into heat-treatment furnace, 1 hour is incubated at 860 DEG C, Ran Houjin
Water-filling is quenched；
Step 5, drawing deformation：Alloy after step 4 solution treatment is carried out into drawing deformation, deflection is 50%；
Step 6, Ageing Treatment and drawing deformation：Alloy after step 5 drawing deformation is carried out into Ageing Treatment, first when
2 hours are incubated at 450 DEG C of temperature of effect, first time drawing deformation is carried out, deflection is 40%, then protected at 450 DEG C of aging temp
Temperature 2 hours, then second drawing deformation is carried out, deflection is 60%.
Alloy property is shown in Table 1.
Embodiment 4
A kind of high-strength highly-conductive contact line rare-earth copper alloy, the rare-earth copper alloy is by chromium, zirconium, zinc, titanium, silver, copper and dilute
Earth elements and inevitable impurity element are constituted, and the percentage by weight that each component accounts for rare-earth copper alloy total amount is 0.4%
Chromium, 0.3% zirconium, 0.15% silver, 0.2% zinc, 0.2% titanium, 0.03% cerium, 0.03% iridium and can not be kept away balance of copper
The impurity element exempted from.
Specifically preparation method is：
Step one, prepare intermediate alloy：Copper, zirconium are put into vacuum non-consumable electrode arc melting stove carries out melting, takes out
Pressure is 0.05Pa in vacuum to stove, and it is 0.05MPa to be then charged with argon gas to stove pressure, is heated to 1070 DEG C, melting 1h, from
Cu-Zr intermediate alloys so are obtained after cooling, it is standby；Copper, rare earth are put into vacuum non-consumable electrode arc melting stove and are melted
Refining, it is 0.05Pa to be evacuated to pressure in stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1050 DEG C, melting
1h, obtains Cu- rare earth intermediate alloys after natural cooling, standby；
Step 2, melting, mold：By in copper, silver, zinc, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Between alloy be put into melting carried out in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove
Interior pressure is 0.05MPa, controls smelting temperature for 1260 DEG C, and mold is injected after melting, forms ingot casting, the placing temperature control
At 1170 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 890 DEG C, 2 hours are incubated, rod is then hot extruded into
Material, extrusion ratio 9:1, obtain bar stock；
Step 4, solution treatment：The bar stock of step 3 is fitted into heat-treatment furnace, 1 hour is incubated at 870 DEG C, Ran Houjin
Water-filling is quenched；
Step 5, drawing deformation：Alloy after step 4 solution treatment is carried out into drawing deformation, deflection is 60%；
The method of step 6, the Ageing Treatment and drawing deformation is：2 hours first are incubated at 460 DEG C of aging temp, are entered
Row first time drawing deformation, deflection is 40%；Afterwards in 450 DEG C of aging temp, melting 1h obtains Cu- rare earths after natural cooling
Intermediate alloy, it is standby；
Step 2, melting, mold：By in copper, silver, zinc, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Between alloy be put into melting carried out in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove
Interior pressure is 0.05MPa, controls smelting temperature for 1210 DEG C, and mold is injected after melting, forms ingot casting, the placing temperature control
At 1155 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 860 DEG C, 2 hours are incubated, rod is then hot extruded into
Material, extrusion ratio 8:1, obtain bar stock；
Step 4, solution treatment：The bar stock of step 3 is fitted into heat-treatment furnace, 1 hour is incubated at 860 DEG C, Ran Houjin
Water-filling is quenched；
Step 5, drawing deformation：Alloy after step 4 solution treatment is carried out into drawing deformation, deflection is 40%；
Step 6, Ageing Treatment and drawing deformation：Alloy after step 5 drawing deformation is carried out into Ageing Treatment, first when
2 hours are incubated at 450 DEG C of temperature of effect, first time drawing deformation is carried out, deflection is 50%, then protected at 450 DEG C of aging temp
Temperature 2 hours, then second drawing deformation is carried out, deflection is 60%.
Alloy property is shown in Table 1.
Embodiment 3
A kind of high-strength highly-conductive contact line rare-earth copper alloy, the rare-earth copper alloy is by chromium, zirconium, zinc, titanium, silver, copper and dilute
Earth elements and inevitable impurity element are constituted, and the percentage by weight that each component accounts for rare-earth copper alloy total amount is 0.3%
Chromium, 0.3% zirconium, 0.1% silver, 0.3% zinc, 0.2% titanium, 0.05% iridium, balance of copper and inevitable impurity unit
Element.
Specifically preparation method is：
Step one, prepare intermediate alloy：Copper, zirconium are put into vacuum non-consumable electrode arc melting stove carries out melting, takes out
Pressure is 0.05Pa in vacuum to stove, and it is 0.05MPa to be then charged with argon gas to stove pressure, is heated to 1060 DEG C, melting 1h, from
Cu-Zr intermediate alloys so are obtained after cooling, it is standby；Copper, rare earth are put into vacuum non-consumable electrode arc melting stove and are melted
Refining, it is 0.05Pa to be evacuated to pressure in stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1040 DEG C, melting
1h, obtains Cu- rare earth intermediate alloys after natural cooling, standby；
Step 2, melting, mold：By in copper, silver, zinc, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Between alloy be put into melting carried out in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove
Interior pressure is 0.05MPa, controls smelting temperature for 1220 DEG C, and mold is injected after melting, forms ingot casting, the placing temperature control
At 1160 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 870 DEG C, 2 hours are incubated, rod is then hot extruded into
Material, extrusion ratio 9:1, obtain bar stock；
Step 4, solution treatment：The bar stock of step 3 is fitted into heat-treatment furnace, 1 hour is incubated at 860 DEG C, Ran Houjin
Water-filling is quenched；
Step 5, drawing deformation：Alloy after step 4 solution treatment is carried out into drawing deformation, deflection is 50%；
Step 6, Ageing Treatment and drawing deformation：Alloy after step 5 drawing deformation is carried out into Ageing Treatment, first when
2 hours are incubated at 450 DEG C of temperature of effect, first time drawing deformation is carried out, deflection is 40%, then protected at 450 DEG C of aging temp
Temperature 2 hours, then second drawing deformation is carried out, deflection is 60%.
Alloy property is shown in Table 1.
Embodiment 4
A kind of high-strength highly-conductive contact line rare-earth copper alloy, the rare-earth copper alloy is by chromium, zirconium, zinc, titanium, silver, copper and dilute
Earth elements and inevitable impurity element are constituted, and the percentage by weight that each component accounts for rare-earth copper alloy total amount is 0.4%
Chromium, 0.3% zirconium, 0.15% silver, 0.2% zinc, 0.2% titanium, 0.03% cerium, 0.03% iridium and can not be kept away balance of copper
The impurity element exempted from.
Specifically preparation method is：
Step one, prepare intermediate alloy：Copper, zirconium are put into vacuum non-consumable electrode arc melting stove carries out melting, takes out
Pressure is 0.05Pa in vacuum to stove, and it is 0.05MPa to be then charged with argon gas to stove pressure, is heated to 1070 DEG C, melting 1h, from
Cu-Zr intermediate alloys so are obtained after cooling, it is standby；Copper, rare earth are put into vacuum non-consumable electrode arc melting stove and are melted
Refining, it is 0.05Pa to be evacuated to pressure in stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1050 DEG C, melting
1h, obtains Cu- rare earth intermediate alloys after natural cooling, standby；
Step 2, melting, mold：By in copper, silver, zinc, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Between alloy be put into melting carried out in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove
Interior pressure is 0.05MPa, controls smelting temperature for 1260 DEG C, and mold is injected after melting, forms ingot casting, the placing temperature control
At 1170 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 890 DEG C, 2 hours are incubated, rod is then hot extruded into
Material, extrusion ratio 9:1, obtain bar stock；
Step 4, solution treatment：The bar stock of step 3 is fitted into heat-treatment furnace, 1 hour is incubated at 870 DEG C, Ran Houjin
Water-filling is quenched；
Step 5, drawing deformation：Alloy after step 4 solution treatment is carried out into drawing deformation, deflection is 60%；
The method of step 6, the Ageing Treatment and drawing deformation is：2 hours first are incubated at 460 DEG C of aging temp, are entered
Row first time drawing deformation, deflection is 40%；Afterwards in aging temp 4509:1, obtain bar stock；
Step 4, solution treatment：The bar stock of step 3 is fitted into heat-treatment furnace, 1 hour is incubated at 890 DEG C, Ran Houjin
Water-filling is quenched；
Step 5, drawing deformation：Alloy after step 4 solution treatment is carried out into drawing deformation, deflection is 60%；
Step 6, Ageing Treatment and drawing deformation：Alloy after step 5 drawing deformation is carried out into Ageing Treatment, first when
2 hours are incubated at 450 DEG C of temperature of effect, first time drawing deformation is carried out, deflection is 60%, then protected at 450 DEG C of aging temp
Temperature 2 hours, then second drawing deformation is carried out, deflection is 60%.
Alloy property is shown in Table 1.
Embodiment 9
A kind of high-strength highly-conductive contact line rare-earth copper alloy, the rare-earth copper alloy is by chromium, zirconium, zinc, titanium, silver, copper and dilute
Earth elements and inevitable impurity element are constituted, and the percentage by weight that each component accounts for rare-earth copper alloy total amount is 0.7%
Chromium, 0.4% zirconium, 0.3% silver, 0.3% zinc, 0.3% titanium, 0.04% cerium, 0.02% iridium, balance of copper and inevitable
Impurity element.
Specifically preparation method is：
Step one, prepare intermediate alloy：Copper, zirconium are put into vacuum non-consumable electrode arc melting stove carries out melting, takes out
Pressure is 0.05Pa in vacuum to stove, and it is 0.05MPa to be then charged with argon gas to stove pressure, is heated to 1090 DEG C, melting 1h, from
Cu-Zr intermediate alloys so are obtained after cooling, it is standby；Copper, rare earth are put into vacuum non-consumable electrode arc melting stove and are melted
Refining, it is 0.05Pa to be evacuated to pressure in stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1090 DEG C, melting
1h, obtains Cu- rare earth intermediate alloys after natural cooling, standby；
Step 2, melting, mold：By in copper, silver, zinc, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Between alloy be put into melting carried out in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove
Interior pressure is 0.05MPa, controls smelting temperature for 1295 DEG C, and mold is injected after melting, forms ingot casting, the placing temperature control
At 1195 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 950 DEG C, 2 hours are incubated, rod is then hot extruded into
Material, extrusion ratio 10:1, obtain bar stock；
Step 4, solution treatment：The bar stock of step 3 is fitted into heat-treatment furnace, 1 hour is incubated at 900 DEG C, Ran Houjin
Water-filling is quenched；
Step 5, drawing deformation：Alloy after step 4 solution treatment is carried out into drawing deformation, deflection is 60%；
The method of step 6, the Ageing Treatment and drawing deformation is：2 hours first are incubated at 460 DEG C of aging temp, are entered
Row first time drawing deformation, deflection is 50%；2 hours are incubated at 450 DEG C of aging temp afterwards, second drawing change is carried out
Shape, deflection is 60%；Then 2 hours are incubated at 450 DEG C of aging temp, then carry out third time drawing deformation, deflection is
60%。
Alloy property is shown in Table 1.
Embodiment 10
A kind of high-strength highly-conductive contact line rare-earth copper alloy, the rare-earth copper alloy is by chromium, zirconium, zinc, titanium, silver, copper and dilute
Earth elements and inevitable impurity element are constituted, and the percentage by weight that each component accounts for rare-earth copper alloy total amount is 0.8%
Chromium, 0.5% zirconium, 0.3% silver, 0.3% zinc, 0.3% titanium, 0.05% cerium, 0.05% iridium, balance of copper and inevitable
Impurity element.
Specifically preparation method is：
Step one, prepare intermediate alloy：Copper, zirconium are put into vacuum non-consumable electrode arc melting stove carries out melting, takes out
Pressure is 0.05Pa in vacuum to stove, and it is 0.05MPa to be then charged with argon gas to stove pressure, is heated to 1100 DEG C, melting 1h, from
Cu-Zr intermediate alloys so are obtained after cooling, it is standby；Copper, rare earth are put into vacuum non-consumable electrode arc melting stove and are melted
Refining, it is 0.05Pa to be evacuated to pressure in stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1070 DEG C, melting
1h, obtains Cu- rare earth intermediate alloys after natural cooling, standby；
Step 2, melting, mold：By in copper, silver, zinc, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Between alloy be put into melting carried out in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove
Interior pressure is 0.05MPa, controls smelting temperature for 1300 DEG C, and mold is injected after melting, forms ingot casting, the placing temperature control
At 1200 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 950 DEG C, 2 hours are incubated, rod is then hot extruded into
Material, extrusion ratio 10:1, obtain bar stock；
Step 4, solution treatment：The bar stock of step 3 is fitted into heat-treatment furnace, 1 hour is incubated at 900 DEG C, Ran Houjin
Water-filling is quenched；
Step 5, drawing deformation：Alloy after step 4 solution treatment is carried out into drawing deformation, deflection is 60%；
The method of step 6, the Ageing Treatment and drawing deformation is：3 hours first are incubated at 460 DEG C of aging temp, are entered
Row first time drawing deformation, deflection is 60%；2 hours are incubated at 450 DEG C of aging temp afterwards, second drawing change is carried out
Shape, deflection is 60%；Then 2 hours are incubated at 450 DEG C of aging temp, then carry out third time drawing deformation, deflection is
60%。
Alloy property is shown in Table 1.
Claims (3)
1. a kind of electrification railway contact net contact line high-strength highly-conductive rare-earth copper alloy, it is characterised in that：The Cu-RE is closed
Jin Youge, zirconium, zinc, titanium, silver, copper and rare earth element and inevitable impurity element are constituted, and each component accounts for rare-earth copper alloy
The percentage by weight of total amount is chromium 0.7-0.8%, zirconium 0.4-0.5%, zinc 0.1-0.4%, titanium 0.3-0.5%, silver-colored 0.3-0.4%, rare earth
Element 0.02-0.1%, balance of copper and inevitable impurity element；
The preparation method of the rare-earth copper alloy is comprised the following steps：
Step one, prepare intermediate alloy：Copper, zirconium are put into vacuum non-consumable electrode arc melting stove carries out melting, vacuumizes
Pressure is 0.05Pa in stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1050-1100 DEG C, melting 0.5-
1h, obtains Cu-Zr intermediate alloys after natural cooling, standby；Copper, rare earth are put into vacuum non-consumable electrode arc melting stove
Row melting, it is 0.05Pa to be evacuated to pressure in stove, and it is 0.05MPa to be then charged with pressure in argon gas to stove, is heated to 1030-
1070 DEG C, melting 0.5-1h obtains Cu- rare earth intermediate alloys after natural cooling, standby；
Step 2, melting, mold：To be closed in the middle of copper, zinc, silver, titanium and Cu-Zr intermediate alloys, Cu- rare earths obtained in step one
Gold is put into carries out melting in high-frequency vacuum smelting furnace, it is 0.05Pa to be evacuated to pressure in stove, is then charged with nitrogen to stove internal pressure
It is by force 0.05MPa, controls smelting temperature for 1200-1300 DEG C, mold is injected after melting, forms ingot casting, the pouring temperature control
System is at 1150-1200 DEG C；
Step 3, hot extrusion：The ingot casting that step 2 is obtained is heated to 850-950 DEG C, 1-3 hours is incubated, is then hot extruded into
Bar, extrusion ratio 5-10:1, obtain bar stock；
Step 4, solution treatment：The bar stock that step 3 is obtained is fitted into heat-treatment furnace, 1-2 hours is incubated at 850-900 DEG C,
Then water quenching is carried out, alloy is obtained standby；
Step 5, drawing deformation：The alloy obtained after step 4 solution treatment is carried out into drawing deformation, deflection is 40-80%；
Step 6, Ageing Treatment and drawing deformation：Alloy after step 5 drawing deformation is carried out into Ageing Treatment, aging temp is
450-550 DEG C, 2-10 hours is incubated, drawing deformation is carried out afterwards, deflection is 20-80%, that is, high-strength highly-conductive Cu-RE is obtained and closes
Gold.
2. a kind of electrification railway contact net contact line high-strength highly-conductive rare-earth copper alloy according to claim 1, it is special
Levy and be, the method for the step 6 Ageing Treatment and drawing deformation is：2-4 is first incubated at 450-500 DEG C of aging temp small
When, first time drawing deformation is carried out, deflection is 40-80%；Then 2-4 hours is incubated at 450-550 DEG C of aging temp, then
Second drawing deformation is carried out, deflection is 40-80%.
3. a kind of electrification railway contact net contact line high-strength highly-conductive rare-earth copper alloy according to claim 1, it is special
Levy and be, the method for the step 6 Ageing Treatment and drawing deformation is：2 hours first are incubated at 460 DEG C of aging temp, are carried out
First time drawing deformation, deflection is 40%；2-4 hours is incubated at 450 DEG C of aging temp afterwards, second drawing change is carried out
Shape, deflection is 40-60%；Then 2 hours are incubated at 450 DEG C of aging temp, then carry out third time drawing deformation, deflection
It is 60%.
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| CN106676319B (en) * | 2016-11-29 | 2018-07-27 | 河南科技大学 | A kind of high-strength highly-conductive copper magnesium alloy contact wire and preparation method thereof |
| CN106555073B (en) * | 2016-11-29 | 2018-07-27 | 河南科技大学 | A kind of high-strength highly-conductive rare earth copper magnesium alloy contact wire and preparation method thereof |
| CN107123466A (en) * | 2017-04-27 | 2017-09-01 | 西北有色金属研究院 | A kind of high-strength high conductivity low-density copper-clad titanium composite contact wire and preparation method thereof |
| CN108060323B (en) * | 2017-12-15 | 2019-11-12 | 西北有色金属研究院 | A kind of high-strength highly-conductive CuCrZrMg series copper alloy silk material and preparation method thereof |
| CN109913691A (en) * | 2019-04-22 | 2019-06-21 | 南通科誉德摩尔新材料有限公司 | A kind of manufacture craft of high-strength compound chromium-zirconium-copper material |
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| CN114645154B (en) * | 2020-12-21 | 2023-06-27 | 广东省钢铁研究所 | Preparation method of high-hardness copper alloy |
| CN114669960B (en) * | 2022-02-15 | 2023-02-21 | 西安斯瑞先进铜合金科技有限公司 | Preparation method of high-strength high-conductivity copper alloy load switch knife |
| CN115369281A (en) * | 2022-09-26 | 2022-11-22 | 陕西斯瑞扶风先进铜合金有限公司 | High-strength high-conductivity chromium-zirconium-copper alloy and preparation method thereof |
| CN117026055B (en) * | 2023-10-09 | 2024-01-12 | 浙江金连接科技股份有限公司 | Palladium alloy for semiconductor chip test probe and preparation method thereof |
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