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Composite aluminum material for PTC and manufacturing method thereof

A manufacturing method and a composite aluminum technology, which are applied in the field of aluminum foil rolling manufacturing, can solve the problems of reducing the heat dissipation performance of PTC heaters, reducing the heating efficiency of PTC heaters, shortening the service life of air conditioners, etc., so as to avoid the formation of intermetallic brittle compounds, easily The effect of mastering and improving assembly efficiency

Inactive Publication Date: 2020-12-08
JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most domestic manufacturers of PTC heaters produce PTC heaters by adding ordinary aluminum alloy welding pieces and aluminum alloy fins to produce PTC heaters by manual assembly and heating in a vacuum furnace. Due to the addition of aluminum alloy welding pieces, Ordinary aluminum materials with perforations cannot be used, which reduces the heat dissipation performance of the PTC heater, making the heating efficiency of the PTC heater gradually decrease with the extension of time, and the power attenuation rate of the PTC heater is generally greater than 10%, which shortens the The service life of the air conditioner increases the consumption of electric energy and wastes energy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The steps for preparing composite aluminum materials for PTC are as follows:

[0042] 1. According to the proportion of Si0.25%, Fe0.50%, Cu0.20%, Mn1.20%, Ti0.03%, the balance is Al as the basic composition, the alloy raw material is prepared for core layer blank melting and casting Rolled to obtain 7.0mm cast-rolled coil, alloy "3003";

[0043] 2. According to the percentage by weight of Si 8.55%, Fe 0.18%, Mg1.1%, Ti0.02%, and the balance is Al as the basic composition, the alloy raw material is prepared to melt and cast the brazing layer blank to obtain a 330mm ingot, and the internal Alloy "4004";

[0044] 3. Preparation of the core layer: Roughly roll the 3003 cast-rolled parent coil at 7.0-5.75mm to a thickness of 5.75mm for uniform annealing, heat it up to 570°C for 8 hours, and cool it out of the furnace;

[0045]4. Brazing layer preparation: According to the design of the theoretical compounding rate of 8%, mill the 4004 ingot after sawing to a thickness of ...

Embodiment 2

[0054] The steps for preparing composite aluminum materials for PTC are as follows:

[0055] 1. According to the proportion of Si0.11%, Fe0.38%, Cu0.07%, Mn1.1%, Ti0.02%, the balance is Al as the basic composition, prepare alloy raw materials and carry out core layer billet melting and casting Rolled to get 6.3mm cast-rolled coil, the internal alloy is named "3003";

[0056] 2. According to the weight percentage of Si 10.5%, Fe 0.20%, Mg2.0%, Ti0.02%, the balance is Al as the basic composition, the alloy raw material is prepared to melt and cast the brazing layer blank to obtain a 330mm ingot, the internal Alloy "4004";

[0057] 3. Preparation of the core layer: Roughly rolling the 3003 cast-rolled parent roll to a thickness of 4.5 mm by 6.3-4.5 for uniform annealing, heating to 580°C for 10 hours, and cooling out of the furnace;

[0058] 4. Brazing layer preparation: According to the design of the theoretical compounding rate of 10%, mill the 4004 ingot to a thickness of 30...

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Abstract

The invention belongs to the technical field of aluminum foil calendering manufacturing and discloses a composite aluminum material for PTC and a manufacturing method thereof. The composite aluminum material for PTC comprises a core layer and a brazing layer, the core layer and the brazing layer form a composite structure through rolling, the brazing layer is made of AA4004 aluminum alloy, and thecore layer is made of AA3003 aluminum alloy. The core layer is prepared through cast rolling and cold rolling, the brazing layer alloy is prepared through casting, hot rolling and cold rolling, and the composite aluminum material for the PTC is obtained after the core layer and the brazing layer are compounded through cold rolling. The aluminum foil prepared through the manufacturing method has high postweld strength and good corrosion resistance after high-temperature welding, the performance requirement of PTC for composite aluminum materials can be met, the manufacturing method is controllable in process, good in repeatability and easy to master, the industry development requirement can be met, and formation of intermetallic brittle compounds can be avoided.

Description

technical field [0001] The invention relates to a composite aluminum material for PTC and a manufacturing method thereof, belonging to the technical field of aluminum foil calendering manufacturing. Background technique [0002] At present, most domestic manufacturers of PTC heaters produce PTC heaters by adding ordinary aluminum alloy welding pieces and aluminum alloy fins to produce PTC heaters by manual assembly and heating in a vacuum furnace. Due to the addition of aluminum alloy welding pieces, Ordinary aluminum materials with perforations cannot be used, which reduces the heat dissipation performance of the PTC heater, making the heating efficiency of the PTC heater gradually decrease with the extension of time, and the power attenuation rate of the PTC heater is generally greater than 10%, which shortens the The service life of the air conditioner increases the consumption of electric energy and wastes energy. Contents of the invention [0003] The purpose of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/02B32B15/01B21C37/02B21B1/38B21B47/00
CPCB21B1/38B21B47/00B21B2001/386B21C37/02B32B15/016B32B2307/54B32B2307/714C22C21/00C22C21/02
Inventor 胡江华刘前换田国建史明飞胡刘飞莘明哲
Owner JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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