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Ultra-high-strength aluminum alloy composite strip for radiator of automobile water tank and manufacturing method thereof

An ultra-high-strength, automobile water tank technology, applied in the field of aluminum alloy composite strip and its manufacturing, can solve the problems of low yield strength, complex brazing process of Mg-containing aluminum alloy, and unsuitable for manufacturing automobile water tank radiators, etc. Effects of mechanical properties, increased cost and process complexity

Active Publication Date: 2018-12-14
JIANGSU ALCHA ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in existing product technology, the task of the present invention is to provide a kind of ultra-high strength aluminum alloy composite strip material for automobile water tank radiator, which solves the problem of complex brazing process of Mg-containing aluminum alloy and the brazing of low-content Mg aluminum alloy strip. The post-yield strength is low, so it is not suitable for the manufacture of automobile water tank radiators

Method used

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  • Ultra-high-strength aluminum alloy composite strip for radiator of automobile water tank and manufacturing method thereof
  • Ultra-high-strength aluminum alloy composite strip for radiator of automobile water tank and manufacturing method thereof
  • Ultra-high-strength aluminum alloy composite strip for radiator of automobile water tank and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Put the raw materials prepared according to the composition percentages in the table below into the smelting furnace. When the core material is smelted, the melt temperature is 740°C, the refining temperature in the standing furnace is 745°C, and the refining time is 15 minutes; the brazing layer is smelted Al-Sr master alloy modification agent, the modification temperature is 760°C, after electromagnetic stirring, let stand for 15 minutes and pour the furnace, the refining temperature in the standing furnace is 740°C, and the refining time is 20 minutes; the chemical composition of the core material and brazing layer is shown in the table below .

[0030]

[0031] (2) The casting process parameters are controlled as follows: the casting temperature of the core material is 705°C, the casting speed is 43mm / min, and the cooling water flow rate is 310m 3 / h, the ingot length is 6000mm; the casting temperature of the brazing layer is 690°C, the casting speed is 52mm / ...

Embodiment 2

[0042] (1) Put the raw materials prepared according to the composition percentages in the table below into the smelting furnace. When the core material is smelted, the melt temperature is 760°C, the refining temperature in the standing furnace is 760°C, and the refining time is 15 minutes; the brazing layer is smelted Al-Sr master alloy modification agent, the modification temperature is 760°C, after electromagnetic stirring, stand still for 15 minutes and turn the furnace back, the refining temperature in the standing furnace is 745°C, and the refining time is 20 minutes; the chemical composition of the core material and brazing layer is shown in the table below .

[0043]

[0044](2) The casting process parameters are controlled as follows: the casting temperature of the core material is 700°C, the casting speed is 41mm / min, and the cooling water flow rate is 300m 3 / h, the ingot length is 6000mm; the casting temperature of the brazing layer is 695°C, the casting speed is...

Embodiment 3

[0055] (1) Put the raw materials prepared according to the composition percentages in the table below into the smelting furnace. When the core material is smelted, the melt temperature is 740°C, the refining temperature in the standing furnace is 740°C, and the refining time is 15 minutes; the brazing layer is smelted Al-Sr master alloy modification agent, the modification temperature is 760°C, after electromagnetic stirring, stand still for 15 minutes and pour the furnace, the refining temperature in the standing furnace is 760°C, and the refining time is 20 minutes; the chemical composition of the core material and brazing layer is shown in the table below .

[0056]

[0057] (2) The casting process parameters are controlled as follows: the casting temperature of the core material is 710°C, the casting speed is 43mm / min, and the cooling water flow rate is 310m 3 / h, the ingot length is 6000mm; the casting temperature of the brazing layer is 690°C, the casting speed is 52m...

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Abstract

The invention discloses an ultrahigh-strength aluminum alloy composite strip for an automobile water tank radiator and a manufacturing method for the ultrahigh-strength aluminum alloy composite strip. The composite strip is composed of a core material and a single-sided or double-sided braze welding layer, wherein the thickness of the welding layer on each surface accounts for 5-10% of the total thickness; the core material consists of the following components in percentage by weight: 0.12-0.26% of Fe, less than or equal to 0.12% of Si, 0.30-0.80% of Cu, 1.5-1.8% of Mn, less than or equal to 0.04% of Mg, 0.02-0.15% of Cr, 0.02-0.15% of Zr, 0.02-0.15% of Ti, less than or equal to 0.03% of each of other elements, less than or equal to 0.15% of contents of all other elements, and the balance of aluminum; the welding layer is made of an aluminum-silicon alloy which consists of the following components in percentage by weight: less than or equal to 0.20% of Fe, 8.0-11.0% of Si, less than or equal to 0.10% of Cu, less than or equal to 0.05% of Mn, 0.03-0.06% of Sr, less than or equal to 0.05% of Ti, less than or equal to 0.03% of each of other elements, less than or equal to 0.15% of all other elements, and the balance of aluminum. The ultrahigh-strength aluminum alloy composite strip has very excellent mechanical property after braze welding, and has yield strength which exceeds 70 MPa after braze welding.

Description

technical field [0001] The invention relates to an aluminum alloy composite strip material and a manufacturing method thereof, more specifically, an ultra-high-strength aluminum alloy composite strip material for an automobile water tank radiator and a manufacturing method thereof. Background technique [0002] The radiator is an integral part of the cooling system of a water-cooled internal combustion engine. The cooling system of an automobile engine is generally composed of a water pump, a radiator, a thermostat, a cooling fan, a fan motor, a motor switch, and a windshield. The temperature of the engine is very high during operation, so in order to ensure its normal operation, it must be cooled. The role of the radiator is to use cold wind (either the cold wind caused by the head-on flow of air when the car is running, or the cold wind provided by the cooling fan) to cool the engine coolant heated by the high-temperature parts of the engine. [0003] There are two main ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/04C22C21/00C22C21/02
CPCB21C37/04C22C21/00C22C21/02
Inventor 薛山邹晓明张敏达章建华吴永新
Owner JIANGSU ALCHA ALUMINUM CO LTD
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