CN110724850A - Preparation method of radiator copper strip for automobile water tank - Google Patents
Preparation method of radiator copper strip for automobile water tank Download PDFInfo
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- CN110724850A CN110724850A CN201911062741.1A CN201911062741A CN110724850A CN 110724850 A CN110724850 A CN 110724850A CN 201911062741 A CN201911062741 A CN 201911062741A CN 110724850 A CN110724850 A CN 110724850A
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- radiator
- copper alloy
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- copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- 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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- Mechanical Engineering (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Conductive Materials (AREA)
Abstract
The copper strip of the water tank radiator is an important raw material required by the automobile industry, and the required technical indexes are that the electric conductivity is more than 80% IACS, the oxidation resistance temperature is more than 380 ℃, the tensile strength is 350-: 110-150. The invention discloses a method for preparing a copper strip of a radiator for an automobile water tank, which comprises the following steps: putting the raw materials into a power frequency cored induction furnace for casting to obtain a copper alloy material; heating the copper alloy material, preserving heat, discharging, and milling to obtain a pretreated copper alloy; cold rolling the pretreated copper alloy, cutting the copper alloy into a strip blank, and then annealing to obtain an annealed blank; and soaking the annealed blank into a sulfuric acid solution for cleaning, and then drying. The preparation method of the copper strip of the radiator for the automobile water tank, provided by the invention, has the advantages that the cold and hot processing is easy to control, and the obtained copper strip of the radiator has high conductivity, high softening temperature resistance and high tensile strength.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a method for preparing a copper strip of a radiator for an automobile water tank.
Background
The copper strip of the water tank radiator is an important raw material required by the automobile industry, and the required technical indexes are that the electric conductivity is more than 80% IACS, the oxidation resistance temperature is more than 380 ℃, the tensile strength is 350-450Mpa, and the Vickers hardness HV is 110-150. In recent years, the demand of automobile water tank belts is developing towards ultra-thin, and the comprehensive performance indexes of the conventional copper alloys of Cu-Ni-Sn, Cu-Te, Cu-Sn-Zr and the like, such as conductivity, softening temperature resistance, tensile strength and the like, cannot completely meet the market demand.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a preparation method of a copper strip of a radiator for an automobile water tank, cold and hot processing is easy to control, and the obtained copper strip of the radiator has high conductivity, high softening temperature resistance and high tensile strength.
The invention provides a preparation method of a copper strip of a radiator for an automobile water tank, which comprises the following steps:
s1, casting the raw materials into a power frequency cored induction furnace to obtain a copper alloy material;
s2, heating the copper alloy material, preserving heat, discharging, and milling to obtain a pretreated copper alloy;
s3, cold rolling the pretreated copper alloy, cutting the copper alloy into a strip blank, and then annealing to obtain an annealed blank;
and S4, soaking the annealed blank into a sulfuric acid solution for cleaning, and then drying.
Preferably, in S1, the copper alloy material includes, by weight: tin: 0.01-0.05%, zinc: 0.1-0.15%, phosphorus: 0.005-0.01%, silver: 0.04-0.09%, antimony: 0.05-0.08%, chromium: 0.03-0.06%, rare earth elements: 0.01-0.02%, oxygen: less than or equal to 0.0009 percent and the balance of copper.
Preferably, in the copper alloy material component of S1, the sum of the weight percentages of tin, zinc and phosphorus is more than 0.155%.
Preferably, in the copper alloy material component of S1, the rare earth element is at least one of lanthanum, cerium, praseodymium, scandium and yttrium.
Preferably, in S2, the copper alloy material is heated to 1000-1080 ℃ and is kept warm for 1-2 h.
Preferably, in S3, the thin strip blank has a thickness of 1.5-1.8mm and a width of 700-800 mm.
Preferably, in the annealing treatment of S3, the preheating zone temperature is 700-750 ℃, the heating zone temperature is 620-650 ℃, and the holding zone temperature is 600-612 ℃.
Preferably, in S3, the tensile strength of the annealed blank is more than or equal to 343N/mm2The elongation is more than or equal to 55 percent.
Preferably, in S4, the concentration of the sulfuric acid solution is 0.2-0.9 mol/L.
Preferably, in S4, the drying temperature is 80-88 ℃.
The invention reasonably optimizes the composition components of the copper alloy strip, solves the problem that the indexes of the electric conductivity, the softening temperature resistance and the tensile strength of the existing copper strip of the radiator of the automobile water tank cannot meet the use requirements, and has the thickness of 0.01-0.03mm, the electric conductivity of 90-95 percent IACS, the softening temperature of 420-500 ℃ and the tensile strength of 440-480N/mm2The Vickers hardness is 160-182, which completely meets the performance index required by the radiator of the automobile water tank.
The invention can be dissolved in copper by reasonably controlling the contents and the proportion of tin, zinc and phosphorus, can improve the strength of the copper strip, obviously improve the softening temperature of the copper strip of the water tank radiator, improve the electric conduction and the tensile strength of the copper strip, and improve the corrosion resistance and the fluidity during casting. The invention effectively solves the problems of high conductivity, high strength and high softening resistance required by the copper strip for the radiator of the automobile water tank, and the cold and hot processing of the material is easy to control in batch production, thus the material is a novel material for the radiator of the automobile water tank which is worthy of popularization.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A preparation method of a radiator copper strip for an automobile water tank comprises the following steps:
s1, casting the raw materials into a power frequency cored induction furnace to obtain a copper alloy material;
the copper alloy material comprises the following components in percentage by weight: tin: 0.01%, zinc: 0.15%, phosphorus: 0.005%, silver: 0.09%, antimony: 0.05%, chromium: 0.06%, lanthanum: 0.01%, oxygen: less than or equal to 0.0009 percent, and the balance of copper;
s2, heating the copper alloy material to 1080 ℃, preserving heat for 1 hour, discharging, and milling to obtain a pretreated copper alloy;
s3, cold rolling the pretreated copper alloy, cutting the copper alloy into thin strip blanks with the thickness of 1.5-1.8mm and the width of 700-2Annealing blanks with the elongation rate of more than or equal to 55 percent;
in the annealing treatment, the temperature of a preheating zone is 750 ℃, the temperature of a heating zone is 620 ℃, and the temperature of a heat preservation zone is 612 ℃;
s4, soaking the annealing blank into a sulfuric acid solution with the concentration of 0.2mol/L for cleaning, and then drying at 88 ℃.
Example 2
A preparation method of a radiator copper strip for an automobile water tank comprises the following steps:
s1, casting the raw materials into a power frequency cored induction furnace to obtain a copper alloy material;
the copper alloy material comprises the following components in percentage by weight: tin: 0.05%, zinc: 0.1%, phosphorus: 0.01%, silver: 0.04%, antimony: 0.08%, chromium: 0.03%, cerium: 0.02%, oxygen: less than or equal to 0.0009 percent, and the balance of copper;
s2, heating the copper alloy material to 1000 ℃, preserving heat for 2 hours, discharging, and milling to obtain a pretreated copper alloy;
s3, cold rolling the pretreated copper alloy, cutting the copper alloy into thin strip blanks with the thickness of 1.5-1.8mm and the width of 700-2Annealing blanks with the elongation rate of more than or equal to 55 percent;
in the annealing treatment, the temperature of a preheating zone is 700 ℃, the temperature of a heating zone is 650 ℃, and the temperature of a heat preservation zone is 600 ℃;
s4, soaking the annealed blank into a sulfuric acid solution with the concentration of 0.9mol/L for cleaning, and then drying at 80 ℃.
Example 3
A preparation method of a radiator copper strip for an automobile water tank comprises the following steps:
s1, casting the raw materials into a power frequency cored induction furnace to obtain a copper alloy material;
the copper alloy material comprises the following components in percentage by weight: tin: 0.02%, zinc: 0.14%, phosphorus: 0.006%, silver: 0.08%, antimony: 0.06%, chromium: 0.05%, praseodymium: 0.012%, oxygen: less than or equal to 0.0009 percent, and the balance of copper;
s2, heating the copper alloy material to 1060 ℃, preserving heat for 1.2h, discharging, and milling to obtain a pretreated copper alloy;
s3, cold rolling the pretreated copper alloy, cutting the copper alloy into thin strip blanks with the thickness of 1.5-1.8mm and the width of 700-2Annealing blanks with the elongation rate of more than or equal to 58 percent;
in the annealing treatment, the temperature of a preheating zone is 740 ℃, the temperature of a heating zone is 630 ℃, and the temperature of a heat preservation zone is 608 ℃;
s4, soaking the annealing blank into a sulfuric acid solution with the concentration of 0.4mol/L for cleaning, and then drying at 86 ℃.
Example 4
A preparation method of a radiator copper strip for an automobile water tank comprises the following steps:
s1, casting the raw materials into a power frequency cored induction furnace to obtain a copper alloy material;
the copper alloy material comprises the following components in percentage by weight: tin: 0.04%, zinc: 0.11%, phosphorus: 0.008%, silver: 0.05%, antimony: 0.07%, chromium: 0.04%, scandium: 0.018%, oxygen: less than or equal to 0.0009 percent, and the balance of copper;
s2, heating the copper alloy material to 1020 ℃, preserving heat for 1.8h, discharging, and milling to obtain a pretreated copper alloy;
s3, cold rolling the pretreated copper alloy, cutting the copper alloy into thin strip blanks with the thickness of 1.5-1.8mm and the width of 700-2Annealing blanks with the elongation rate of more than or equal to 58 percent;
in the annealing treatment, the temperature of a preheating zone is 720 ℃, the temperature of a heating zone is 640 ℃, and the temperature of a heat preservation zone is 604 ℃;
s4, soaking the annealed blank into a sulfuric acid solution with the concentration of 0.6mol/L for cleaning, and then drying at 82 ℃.
Example 5
A preparation method of a radiator copper strip for an automobile water tank comprises the following steps:
s1, casting the raw materials into a power frequency cored induction furnace to obtain a copper alloy material;
the copper alloy material comprises the following components in percentage by weight: tin: 0.03%, zinc: 0.12%, phosphorus: 0.007%, silver: 0.06%, antimony: 0.065%, chromium: 0.045%, yttrium: 0.015%, oxygen: less than or equal to 0.0009 percent, and the balance of copper;
s2, heating the copper alloy material to 1040 ℃, preserving heat for 1.5h, discharging, and milling to obtain a pretreated copper alloy;
s3, cold rolling the pretreated copper alloy, cutting the copper alloy into a thin strip blank with the thickness of 1.5-1.8mm and the width of 700-800mm, and then annealing to obtain an annealing blank;
in the annealing treatment, the temperature of a preheating zone is 730 ℃, the temperature of a heating zone is 635 ℃, and the temperature of a heat preservation zone is 606 ℃;
s4, soaking the annealed blank into a sulfuric acid solution with the concentration of 0.5mol/L for cleaning, and then drying at 85 ℃.
Comparative example 1
A preparation method of a copper strip of a radiator comprises the following steps:
s1, casting the raw materials into a power frequency cored induction furnace to obtain a copper alloy material;
the copper alloy material comprises the following components in percentage by weight: tin: 0.02%, zinc: 0.11%, phosphorus: 0.006%, silver: 0.06%, antimony: 0.065%, chromium: 0.045%, yttrium: 0.015%, oxygen: less than or equal to 0.0009 percent, and the balance of copper;
s2, heating the copper alloy material to 1040 ℃, preserving heat for 1.5h, discharging, and milling to obtain a pretreated copper alloy;
s3, cold rolling the pretreated copper alloy, cutting the copper alloy into a thin strip blank with the thickness of 1.5-1.8mm and the width of 700-800mm, and then annealing to obtain an annealing blank;
in the annealing treatment, the temperature of a preheating zone is 730 ℃, the temperature of a heating zone is 635 ℃, and the temperature of a heat preservation zone is 606 ℃;
s4, soaking the annealed blank into a sulfuric acid solution with the concentration of 0.5mol/L for cleaning, and then drying at 85 ℃.
Comparative example 2
A preparation method of a copper strip of a radiator comprises the following steps:
s1, casting the raw materials into a power frequency cored induction furnace to obtain a copper alloy material;
the copper alloy material comprises the following components in percentage by weight: tin: 0.03%, zinc: 0.12%, phosphorus: 0.007%, silver: 0.06%, antimony: 0.065%, chromium: 0.045%, yttrium: 0.015%, oxygen: less than or equal to 0.0009 percent, and the balance of copper;
s2, heating the copper alloy material to 1050 ℃, preserving heat for 2 hours, discharging, and milling to obtain a pretreated copper alloy;
s3, cold rolling the pretreated copper alloy, cutting the copper alloy into a thin strip blank with the thickness of 1.5-1.8mm and the width of 700-800mm, and then annealing to obtain an annealing blank;
in the annealing treatment, the temperature of a preheating zone is 700 ℃, the temperature of a heating zone is 800 ℃, and the temperature of a heat preservation zone is 750 ℃;
s4, soaking the annealed blank into a sulfuric acid solution with the concentration of 0.5mol/L for cleaning, and then drying at 85 ℃.
The radiator copper strip for the radiator of the automobile obtained in example 5 was compared with the radiator copper strips obtained in comparative examples 1 to 2, and the results were as follows:
| example 5 | Comparative example 1 | Comparative example 2 | |
| Electrical conductivity,% IACS | 94 | 90 | 88 |
| Softening temperature of | 495 | 380 | 420 |
| Tensile strength, Mpa | 480 | 450 | 380 |
| Vickers hardness | 174 | 150 | 130 |
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A preparation method of a radiator copper strip for an automobile water tank is characterized by comprising the following steps:
s1, casting the raw materials into a power frequency cored induction furnace to obtain a copper alloy material;
s2, heating the copper alloy material, preserving heat, discharging, and milling to obtain a pretreated copper alloy;
s3, cold rolling the pretreated copper alloy, cutting the copper alloy into a strip blank, and then annealing to obtain an annealed blank;
and S4, soaking the annealed blank into a sulfuric acid solution for cleaning, and then drying.
2. The method for preparing the copper strip of the radiator for the automobile water tank as claimed in claim 1, wherein in S1, the copper alloy material comprises the following components in percentage by weight: tin: 0.01-0.05%, zinc: 0.1-0.15%, phosphorus: 0.005-0.01%, silver: 0.04-0.09%, antimony: 0.05-0.08%, chromium: 0.03-0.06%, rare earth elements: 0.01-0.02%, oxygen: less than or equal to 0.0009 percent and the balance of copper.
3. The method for preparing the copper strip of the radiator for the automobile water tank as claimed in claim 2, wherein the sum of the weight percentages of tin, zinc and phosphorus in the copper alloy material component of S1 is more than 0.155%.
4. The method for preparing the copper strip of the radiator for the automobile water tank as recited in claim 2 or 3, wherein in the copper alloy material component of S1, the rare earth element is at least one of lanthanum, cerium, praseodymium, scandium and yttrium.
5. The method for preparing the copper strip of the radiator for the automobile water tank as recited in any one of claims 1 to 4, wherein in S2, the copper alloy material is heated to 1000-1080 ℃ and the temperature is maintained for 1-2 h.
6. The method for preparing the copper strip of the radiator for the automobile water tank as recited in any one of claims 1 to 5, wherein in S3, the thickness of the thin strip is 1.5-1.8mm, and the width is 700-800 mm.
7. The method for preparing the copper strip for the radiator of the automobile water tank as recited in any one of claims 1 to 6, wherein in the annealing treatment of S3, the temperature of the preheating zone is 700-750 ℃, the temperature of the heating zone is 620-650 ℃, and the temperature of the heat preservation zone is 600-612 ℃.
8. The method for preparing the copper strip of the radiator for the automobile water tank as claimed in any one of claims 1 to 7, wherein in S3, the tensile strength of the annealed blank is more than or equal to 343N/mm2The elongation is more than or equal to 55 percent.
9. The method for manufacturing the copper strip of the radiator for the automobile water tank as recited in any one of claims 1 to 8, wherein the concentration of the sulfuric acid solution in S4 is 0.2 to 0.9 mol/L.
10. The method for preparing the copper strip of the radiator for the automobile water tank as claimed in any one of claims 1 to 9, wherein the drying temperature in S4 is 80-88 ℃.
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| CN201911062741.1A CN110724850A (en) | 2019-11-03 | 2019-11-03 | Preparation method of radiator copper strip for automobile water tank |
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Citations (8)
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|---|---|---|---|---|
| JPH02163331A (en) * | 1988-12-15 | 1990-06-22 | Nippon Mining Co Ltd | High strength and high conductivity copper alloy having excellent adhesion for oxidized film |
| CN1373234A (en) * | 2001-10-26 | 2002-10-09 | 十堰益民铜材有限公司 | Method for processing strengthened ultra-thin rod copper belt |
| CN1856588A (en) * | 2003-09-19 | 2006-11-01 | 住友金属工业株式会社 | Copper alloy and method for production thereof |
| CN101555558A (en) * | 2009-05-11 | 2009-10-14 | 仇文秋 | High-plastic brass band and production process thereof |
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| CN106011531A (en) * | 2016-06-29 | 2016-10-12 | 南通恒金复合材料有限公司 | Improved copper strip for automobile water tank radiator |
| CN108515085A (en) * | 2018-03-30 | 2018-09-11 | 湖南科罗德新材料有限公司 | The preparation method of Copper-Aluminum compound strip |
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-
2019
- 2019-11-03 CN CN201911062741.1A patent/CN110724850A/en active Pending
Patent Citations (8)
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| JPH02163331A (en) * | 1988-12-15 | 1990-06-22 | Nippon Mining Co Ltd | High strength and high conductivity copper alloy having excellent adhesion for oxidized film |
| CN1373234A (en) * | 2001-10-26 | 2002-10-09 | 十堰益民铜材有限公司 | Method for processing strengthened ultra-thin rod copper belt |
| CN1856588A (en) * | 2003-09-19 | 2006-11-01 | 住友金属工业株式会社 | Copper alloy and method for production thereof |
| CN101555558A (en) * | 2009-05-11 | 2009-10-14 | 仇文秋 | High-plastic brass band and production process thereof |
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| CN106011531A (en) * | 2016-06-29 | 2016-10-12 | 南通恒金复合材料有限公司 | Improved copper strip for automobile water tank radiator |
| CN108515085A (en) * | 2018-03-30 | 2018-09-11 | 湖南科罗德新材料有限公司 | The preparation method of Copper-Aluminum compound strip |
| CN110252972A (en) * | 2019-07-06 | 2019-09-20 | 湖北精益高精铜板带有限公司 | High-strength highly-conductive microalloy copper foil and its processing method |
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