CN114682636A - Continuous extrusion production process and device for grain refining copper, chromium and zirconium - Google Patents
Continuous extrusion production process and device for grain refining copper, chromium and zirconium Download PDFInfo
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- CN114682636A CN114682636A CN202210205747.5A CN202210205747A CN114682636A CN 114682636 A CN114682636 A CN 114682636A CN 202210205747 A CN202210205747 A CN 202210205747A CN 114682636 A CN114682636 A CN 114682636A
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- chromium
- copper
- zirconium
- continuous extrusion
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- 238000001125 extrusion Methods 0.000 title claims abstract description 55
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 20
- 239000010949 copper Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 13
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000011651 chromium Substances 0.000 title claims abstract description 13
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 13
- 229910052726 zirconium Inorganic materials 0.000 title claims abstract description 11
- 238000007670 refining Methods 0.000 title claims description 3
- QZLJNVMRJXHARQ-UHFFFAOYSA-N [Zr].[Cr].[Cu] Chemical compound [Zr].[Cr].[Cu] QZLJNVMRJXHARQ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 238000009749 continuous casting Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 10
- 239000010985 leather Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- JUVGUSVNTPYZJL-UHFFFAOYSA-N chromium zirconium Chemical compound [Cr].[Zr] JUVGUSVNTPYZJL-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910017526 Cu-Cr-Zr Inorganic materials 0.000 description 2
- 229910017810 Cu—Cr—Zr Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C9/00—Cooling, heating or lubricating drawing material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to a continuous extrusion production process of grain refined copper, chromium and zirconium, which comprises high-temperature heat treatment, natural cooling, paying off, straightening, peeling, continuous extrusion, water cooling, drying, online flaw detection and wire winding, wherein a copper, chromium and zirconium rod blank subjected to up-drawing continuous casting is placed into a heating furnace for high-temperature heat treatment, the temperature is kept at 950 ℃ and 1020 ℃, and the temperature is kept for 1.5-2.5 hours; and (5) turning off the power supply, cooling the furnace, and naturally cooling to the normal temperature. The grain size of the copper-chromium-zirconium contact line produced by the invention is 0.015mm, the requirements of the iron standard TB/T2809-containing 2017 are completely met, high-temperature thermal treatment is carried out on the rod blank before the rod blank enters a continuous extrusion device, the rod is softened in advance, the extrusion current is reduced from the original 370-containing 400A to 280-containing 300A, the extrusion current is reduced, the energy consumption can be saved in the extrusion process, and the extrusion force is reduced, so that the tool die is protected.
Description
Technical Field
The invention relates to the technical field of contact line production for overhead flexible contact lines, in particular to a continuous extrusion production process and device for grain refined copper, chromium and zirconium.
Background
The production of the continuous extrusion copper chromium zirconium contact line in the current market adopts a process route of 'upward continuous casting, peeling, continuous extrusion and other processes', a copper chromium zirconium mixed solution is directly cooled and crystallized from a high-temperature state to normal temperature during smelting to obtain a copper chromium zirconium rod material, chromium zirconium particles are all dissolved in a copper matrix, the temperature of 500 ℃ generated during extrusion is just in time effect, the deformation resistance generated during extrusion is very large, coarse grains which are pushed and smelted cannot be broken, the grain size of the copper chromium zirconium contact line is 0.008mm at the edge, a large number of uncrushed grains are 0.5-4mm in the middle, and the grain size does not completely meet the requirements of an iron standard TB/T2809 and 2017 (the standard requires that the transverse grain size is less than or equal to 0.2 mm).
Disclosure of Invention
The invention aims to overcome the defects and provides a continuous extrusion production process and a continuous extrusion production device for grain-refined copper, chromium and zirconium, the grain size of the produced copper, chromium and zirconium contact line is 0.015-0.03mm, the requirement of the iron standard TB/T2809 and 2017 is completely met, high-temperature heat treatment is carried out before the rod blank enters the continuous extrusion device, the rod is softened in advance, the extrusion current is reduced from the original 370 and 400A to 280 and 300A, the extrusion current is reduced, the energy consumption can be saved in the extrusion process, and the extrusion force is reduced, so that the tool die is also protected.
The purpose of the invention is realized as follows:
a continuous extrusion production process of grain refined copper, chromium and zirconium comprises the steps of putting a copper, chromium and zirconium rod blank subjected to continuous casting into a heating furnace for high-temperature heat treatment, keeping the temperature at 950 ℃ and 1020 ℃, and keeping the temperature for 1.5-2.5 h; turning off the power supply, cooling the furnace to normal temperature naturally; the method comprises the steps of putting a rod blank into a pay-off device, straightening the rod blank by a straightening device, then putting the rod blank into an online lathe leather device, removing surface oxides to obtain a smooth rod blank, continuously extruding the rod blank into a copper-chromium-zirconium contact line by a continuous extrusion device, rapidly cooling the copper-chromium-zirconium contact line by a cooling device, completely removing surface moisture of the cooled copper-chromium-zirconium contact line by a drying device, and taking up the copper-chromium-zirconium contact line by a take-up device after the surface and internal quality of the copper-chromium-zirconium contact line are completely qualified through detection of an online flaw detection device.
Preferably, the continuous extrusion temperature is maintained at 450-600 ℃ and the extrusion current is maintained at 280-300A.
The production device comprises a heating furnace, a pay-off device, a straightening device, an online peeling device, a continuous extrusion device, a cooling device, a drying device, an online flaw detection device and a take-up device which are sequentially arranged, wherein the copper-chromium-zirconium bar stock is subjected to high-temperature heat treatment in the heating furnace, the copper-chromium-zirconium bar stock is sequentially subjected to the pay-off device, the straightening device and the online flaw detection device after being naturally cooled to normal temperature and then enters the continuous extrusion device, and an extruded copper-chromium-zirconium contact wire is cooled by the cooling device, dried by the drying device and rolled by the take-up device after being detected by the online flaw detection device.
The invention has the beneficial effects that:
naturally cooling the copper chromium zirconium rod material subjected to high-temperature heat treatment, so that chromium zirconium particles are precipitated in advance, the aging characteristic is not generated, the high temperature of 500 ℃ generated in the continuous extrusion process does not have a strengthening effect on the copper rod, coarse grains of the copper rod can be broken, extruded fine grains are realized, the grain size of the produced copper chromium zirconium contact line is 0.015-0.03mm, and the requirement of the iron standard TB/T2809 plus 2017 (the standard requirement that the transverse grain size is less than or equal to 0.2 mm) is completely met;
high-temperature heat treatment is carried out before the rod blank enters the continuous extrusion device, the rod is softened in advance, the extrusion current is reduced to 280 plus 300A from the original 370 plus 400A, the extrusion current is reduced, the energy consumption can be saved in the extrusion process, and the extrusion force is reduced, so that the tool die is protected.
Drawings
FIG. 1 is a flow chart of the production process of the present invention.
FIG. 2 is a metallographic photograph of a Cu-Cr-Zr contact wire produced by the present invention.
FIG. 3 is a photograph of metallographic analysis of the Cu-Cr-Zr contact line produced in comparative example 5.
Wherein: a heating furnace 1; a pay-off device 2; a straightening device 3; an online peeling device 4; a continuous extrusion device 5; a cooling device 6; a drying device 7; an online flaw detection device 8; and a take-up device 9.
Detailed Description
Example 1:
referring to fig. 1, the invention relates to a continuous extrusion production process of grain refined copper, chromium and zirconium, which comprises the following steps: putting the copper-chromium-zirconium rod blank subjected to up-drawing continuous casting into a heating furnace for high-temperature heat treatment, keeping the temperature at 1000 ℃, and preserving the heat for 2 hours; turning off the power supply, cooling the furnace, and naturally cooling to normal temperature; putting the rod blank into a pay-off device, straightening the rod blank by a straightening device, then entering an online leather device, removing surface oxides to obtain a smooth rod blank, continuously extruding a copper rod into the required rod blank diameter by a continuous extrusion device, keeping the continuous extrusion temperature at 500 ℃, and extruding current at 280 plus 300A.
High-temperature heat treatment is carried out before the rod blank enters the continuous extrusion device, the rod is softened in advance, the extrusion current is reduced to 280 plus 300A from the original 370 plus 400A, the extrusion current is reduced, the energy consumption can be saved in the extrusion process, and the extrusion force is reduced, so that the tool die is protected.
The copper chromium zirconium rod material after high-temperature heat treatment is naturally cooled, so that chromium zirconium particles are precipitated in advance, the aging characteristic is not generated, the high temperature of 500 ℃ generated in the continuous extrusion process does not have a strengthening effect on the copper rod, coarse grains of the copper rod can be broken, extruded fine grains are realized, the grain size of the produced copper chromium zirconium contact line is 0.015-0.03mm, and the requirement of the iron standard TB/T2809 plus 2017 (the standard requirement that the transverse grain size is less than or equal to 0.2 mm) is completely met.
The utility model provides a grain refines copper chromium zirconium continuous extrusion device, including the heating furnace 1 that sets gradually, pay-off 2, coalignment 3, online peeling apparatus 4, continuous extrusion device 5, cooling device 6, drying device 7, online flaw detection device 8 and take-up 9, copper chromium zirconium rod material blank is high temperature heat treatment in the heating furnace, naturally cool to the normal atmospheric temperature after with copper chromium zirconium rod material blank in proper order through pay-off 2, coalignment 3, enter continuous extrusion device 5 behind online peeling apparatus 4, the copper chromium zirconium contact line that extrudes is cooled off through cooling device 6, drying device 7 is dried, by take-up 9 coiling after online flaw detection device 8 detects the completion.
Example 2:
and (3) putting the copper-chromium-zirconium rod blank subjected to upward continuous casting into a heating furnace for high-temperature heat treatment, keeping the temperature at 950 ℃, and keeping the temperature for 1.5h, wherein the rest steps are the same as those in the embodiment 1.
Example 3:
and (3) putting the copper-chromium-zirconium rod blank subjected to up-drawing continuous casting into a heating furnace for high-temperature heat treatment, keeping the temperature at 1020 ℃, and keeping the temperature for 2.5 hours, wherein the rest steps are the same as those in the embodiment 1.
Comparative example 1:
the copper-chromium-zirconium rod blank after the up-drawing continuous casting is put into a heating furnace for high-temperature heat treatment, the temperature is kept at 800 ℃, and the rest steps are the same as those in the embodiment 1.
Comparative example 2:
and (3) placing the copper-chromium-zirconium rod blank subjected to upward continuous casting into a heating furnace for high-temperature heat treatment, keeping the temperature for 1h, and performing the rest steps in the same way as in the embodiment 1.
Comparative example 3:
and (3) putting the copper-chromium-zirconium rod blank subjected to the upward continuous casting into a heating furnace for high-temperature heat treatment, keeping the temperature for 5 hours, and performing the rest steps as in the example 1.
Comparative example 4:
putting the copper-chromium-zirconium rod blank subjected to up-drawing continuous casting into a heating furnace for high-temperature heat treatment, keeping the temperature at 1000 ℃, and preserving the heat for 2 hours; after the power is turned off, water cooling is performed to normal temperature, and the rest steps are the same as in the example.
Comparative example 5:
the copper-chromium-zirconium bar stock after up-casting was not subjected to high-temperature heat treatment, and the rest of the procedure was the same as in example 1.
The copper chromium zirconium contact lines produced in examples 1-3 and comparative examples 1-5 were compared in performance, and the results were as follows:
in summary, it is found by comparison that when the heating temperature of the copper rod is 950-.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (3)
1. A continuous extrusion production process of grain refined copper, chromium and zirconium is characterized in that:
putting the copper-chromium-zirconium rod blank subjected to up-drawing continuous casting into a heating furnace for high-temperature heat treatment, keeping the temperature at 950 ℃ and 1020 ℃, and preserving the heat for 1.5-2.5 h; turning off the power supply, cooling the furnace to normal temperature naturally; the method comprises the steps of putting a rod blank into a pay-off device, straightening the rod blank by a straightening device, then putting the rod blank into an online lathe leather device, removing surface oxides to obtain a smooth rod blank, continuously extruding the rod blank into a copper-chromium-zirconium contact line by a continuous extrusion device, rapidly cooling the copper-chromium-zirconium contact line by a cooling device, completely removing surface moisture of the cooled copper-chromium-zirconium contact line by a drying device, and taking up the copper-chromium-zirconium contact line by a take-up device after the surface and internal quality of the copper-chromium-zirconium contact line are completely qualified through detection of an online flaw detection device.
2. The continuous extrusion production process of grain-refined copper, chromium and zirconium as claimed in claim 1, wherein: the continuous extrusion temperature is maintained at 450 ℃ and 600 ℃, and the extrusion current is maintained at 280 ℃ and 300A.
3. The production device adopted by the continuous extrusion production process of grain refining copper, chromium and zirconium as recited in one of claims 1-2, characterized in that: the continuous extrusion device comprises a heating furnace, a pay-off device, a straightening device, an online peeling device, a continuous extrusion device, a cooling device, a drying device, an online flaw detection device and a take-up device which are sequentially arranged, wherein copper chromium zirconium rod blanks are subjected to high-temperature heat treatment in the heating furnace, and naturally cooled to normal temperature, then the copper chromium zirconium rod blanks sequentially pass through the pay-off device, the straightening device and the online flaw detection device and then enter the continuous extrusion device, and extruded copper chromium zirconium contact wires are cooled by the cooling device, dried by the drying device and rolled by the take-up device after being detected by the online flaw detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205747.5A CN114682636A (en) | 2022-03-04 | 2022-03-04 | Continuous extrusion production process and device for grain refining copper, chromium and zirconium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205747.5A CN114682636A (en) | 2022-03-04 | 2022-03-04 | Continuous extrusion production process and device for grain refining copper, chromium and zirconium |
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| Publication Number | Publication Date |
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| CN114682636A true CN114682636A (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210205747.5A Pending CN114682636A (en) | 2022-03-04 | 2022-03-04 | Continuous extrusion production process and device for grain refining copper, chromium and zirconium |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001181811A (en) * | 1999-12-24 | 2001-07-03 | Mitsubishi Cable Ind Ltd | Method of manufacturing chromium-zirconium-type copper alloy wire |
| CN105483582A (en) * | 2016-01-27 | 2016-04-13 | 西安交通大学 | Preparation method of high-strength and high-conductivity chromium-zirconium-copper alloy for high-speed railway power grid contact lines |
| CN109355525A (en) * | 2018-11-06 | 2019-02-19 | 有研工程技术研究院有限公司 | Multiple dimensioned polynary high-strength highly-conductive chrome zirconium copper alloy material of one kind and preparation method thereof |
| JP2019031713A (en) * | 2017-08-08 | 2019-02-28 | 三芳合金工業株式会社 | Chromium-zirconium copper alloy forged plate material and method for manufacturing the same |
| CN110629139A (en) * | 2018-06-25 | 2019-12-31 | 南京理工大学 | Preparation method of Cu-Cr-Zr alloy |
| CN111519116A (en) * | 2020-04-23 | 2020-08-11 | 宁波金田铜业(集团)股份有限公司 | Preparation method of large-length solderless copper-chromium-zirconium contact line |
| CN111799035A (en) * | 2020-06-22 | 2020-10-20 | 陕西斯瑞新材料股份有限公司 | Processing technology of chromium-zirconium-copper contact line for high-speed electrified railway |
| CN212884178U (en) * | 2020-07-03 | 2021-04-06 | 江阴电工合金股份有限公司 | Copper chromium zirconium continuous extrusion production system |
| CN113718129A (en) * | 2021-08-30 | 2021-11-30 | 宁波金田铜业(集团)股份有限公司 | Chromium-zirconium-copper alloy and preparation method thereof |
-
2022
- 2022-03-04 CN CN202210205747.5A patent/CN114682636A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001181811A (en) * | 1999-12-24 | 2001-07-03 | Mitsubishi Cable Ind Ltd | Method of manufacturing chromium-zirconium-type copper alloy wire |
| CN105483582A (en) * | 2016-01-27 | 2016-04-13 | 西安交通大学 | Preparation method of high-strength and high-conductivity chromium-zirconium-copper alloy for high-speed railway power grid contact lines |
| JP2019031713A (en) * | 2017-08-08 | 2019-02-28 | 三芳合金工業株式会社 | Chromium-zirconium copper alloy forged plate material and method for manufacturing the same |
| CN110629139A (en) * | 2018-06-25 | 2019-12-31 | 南京理工大学 | Preparation method of Cu-Cr-Zr alloy |
| CN109355525A (en) * | 2018-11-06 | 2019-02-19 | 有研工程技术研究院有限公司 | Multiple dimensioned polynary high-strength highly-conductive chrome zirconium copper alloy material of one kind and preparation method thereof |
| CN111519116A (en) * | 2020-04-23 | 2020-08-11 | 宁波金田铜业(集团)股份有限公司 | Preparation method of large-length solderless copper-chromium-zirconium contact line |
| CN111799035A (en) * | 2020-06-22 | 2020-10-20 | 陕西斯瑞新材料股份有限公司 | Processing technology of chromium-zirconium-copper contact line for high-speed electrified railway |
| CN212884178U (en) * | 2020-07-03 | 2021-04-06 | 江阴电工合金股份有限公司 | Copper chromium zirconium continuous extrusion production system |
| CN113718129A (en) * | 2021-08-30 | 2021-11-30 | 宁波金田铜业(集团)股份有限公司 | Chromium-zirconium-copper alloy and preparation method thereof |
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Application publication date: 20220701 |