A kind of aluminum foil material for producing automobile heat dissipation composite fins and its preparation method

A composite fin and aluminum foil technology, applied in welding equipment, manufacturing tools, metal rolling, etc., can solve the complex production process of hot-rolled composite heat dissipation composite fins, achieve excellent anti-sag performance, reduce production costs, The effect of meeting performance requirements

Active Publication Date: 2020-10-09
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

[0003] In the past, most of the heat sink aluminum foil blanks used for automotive heat exchangers-fin structures were produced with hot-rolled composite blanks. The production process is as follows figure 2 , from attached figure 2 It can be seen that the production process of hot-rolled composite heat-dissipating composite fins is relatively complicated

Method used

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  • A kind of aluminum foil material for producing automobile heat dissipation composite fins and its preparation method
  • A kind of aluminum foil material for producing automobile heat dissipation composite fins and its preparation method
  • A kind of aluminum foil material for producing automobile heat dissipation composite fins and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0030] 1. According to the alloy ratio: silicon 0.6wt%, iron 0.2wt%, copper 0.05wt%, manganese 1.0wt%, magnesium 0.05wt%, zinc 1.1wt%, zirconium 0.1wt%, titanium 0-0.05wt%, smelting Finally, the core material cast-rolled plate is prepared by continuous casting and rolling; according to the alloy ratio: 6.8wt% silicon, 0.2wt% iron, 0.05wt% copper, 0.05wt% manganese, 0.02wt% zinc, and the remaining components are aluminum. After smelting Prepare cast-rolled sheet of leather material by continuous casting-rolling method;

[0031] 2. Core material preparation: cold-roll the core material cast-rolled plate to 4.0mm, weld the outer ring, tighten the steel strip on the plate surface, anneal in a high-temperature annealing furnace, heat up to the target heating temperature of 550°C within 3 hours and keep it for 26 hours. 530°C heat preservation for 5h, then air cooling out of the furnace to obtain the core material blank;

[0032] 3. Leather material preparation: Heat treatment of t...

Embodiment 2

[0058] 1. According to the alloy ratio: 0.95wt% silicon, 0.68wt% iron, 0.15wt% copper, 1.7wt% manganese, 0.08wt% magnesium, 1.8wt% zinc, 0.18wt% zirconium, the rest is aluminum, used after smelting The continuous casting and rolling method prepares the core cast rolling plate; according to the alloy ratio: 8.1wt% silicon, 0.8wt% iron, 0.2wt% copper, 0.1wt% manganese, 0.2wt% zinc, and the rest of the ingredients are aluminum. Cast-rolling method to prepare cast-rolled sheet of leather material;

[0059] 2. Core material preparation: core material cast-rolled plate is cold-rolled to 5.0mm, the outer ring is welded, the steel strip is tightened on the plate surface, annealed in a high-temperature annealing furnace, the temperature is raised to the target heating temperature of 580°C within 3 hours and kept for 22 hours, and the temperature is turned to 550°C ℃ for 3 hours, and then air-cooled after taking out the furnace to obtain a core material blank;

[0060] 3. Preparation o...

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Abstract

The invention relates to an aluminum foil for producing a heat dissipating composite fin for an automobile and a preparation method thereof. The material comprises a core material and leather materials on the upper and lower layers; the aluminum foil for the composite fin is a part of an automobile heat exchanger, the leather materials of the aluminum foil for the composite fin have a lower melting point, the characteristic that the leather materials of the aluminum foil have the lower melting point is adopted for brazing at a certain high temperature, and the the leather materials of the aluminum foil melt when the melting point is reached so as to realize combination of the core material of fin and other components of the heat exchanger. The leather materials are compounded on the upper and lower surfaces of the core material, the core material and the leather materials are continuously cast and rolled to obtain a cast-rolled billet, and compounding is achieved after cold rolling compounding. The preparation method has high production efficiency, high flexibility and high quality, the aluminum foil material coating rate is more stable, and the aluminum foil has the high strength after welding, the excellent corrosion resistance and excellent anti-sagging performance after high temperature brazing; and to sum up, the performance of the prepared aluminum foil for the heat dissipating composite fin for the automobile is excellent.

Description

technical field [0001] The invention relates to the technical field of metal materials and metal material processing and molding, in particular to an aluminum alloy aluminum foil for automobile heat dissipation composite fins and a preparation method thereof. Background technique [0002] Non-composite fins are used in the heat exchanger assembly process and need to be laid with solder fins, while composite fins realize the combination of the brazing layer and the fin core, so that the step of padding the solder fins can be omitted during the heat exchanger assembly process. Thereby, the mechanized production is realized without manual assembly, the assembly efficiency is improved, and the production cost is reduced. [0003] In the past, most of the heat sink aluminum foil blanks used for automotive heat exchangers-fin structures were produced with hot-rolled composite blanks. The production process is as follows figure 2 , from attached figure 2 It can be seen that the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C21/10C22C1/02C22F1/043C22F1/053B23K1/00B21B1/40
CPCB21B1/40B23K1/00C22C1/026C22C21/02C22C21/10C22F1/043C22F1/053
Inventor 任素贞徐成志刘前换黄绍浪宦文辉史明飞胡刘飞
Owner JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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