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Method for manufacturing aluminium alloy sheet for automobile fuel tank

A technology of aluminum alloy plate and manufacturing method, which is applied in the field of aluminum alloy materials, can solve the problems that do not conform to the development trend of automobile lightweight, difficult to repair, easy to rust, etc., and achieve high material recycling rate, accurate dimensional tolerance, and economic benefits Good results

Active Publication Date: 2015-01-21
DALISHEN ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the steel fuel tank is prone to electric sparks during friction and impact, causing explosion accidents; it is easy to rust when exposed to water, affecting the quality of the oil product, and causing oil pump failure; and the steel fuel tank is heavy, which does not meet the development trend of lightweight vehicles
Plastic fuel tanks have disadvantages such as "easy to age, easy to break, not resistant to impact, not resistant to exposure, and not easy to repair after damage, and not environmentally friendly"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Taking the production of 5052H32 aluminum alloy sheet with a finished product specification of 2.0 (thickness) mm*1500 (width) mm*1560 (length) mm as an example, the method for manufacturing an aluminum alloy sheet for automobile fuel tanks of the present invention is illustrated, including the following steps :

[0043] (1) Ingredients: Use the following weight percentage materials for alloy proportioning: Si≤0.2%, Fe≤0.3%, Cu≤0.1%, Mn≤0.1%, 2.2%≤Mg≤2.8%, 0.15%≤Cr≤0.3 %, Zn≤0.1%, 0.1%≤Ti≤0.15%, the balance is Al;

[0044] (2) Melting: Melting temperature is 705~740℃, and covering agent is used;

[0045] (3) Refining: Use chlorine and argon to refine the ingots at a refining temperature of 725~740℃;

[0046] (4) Grain refinement: the grain refiner Al-5Ti-0.2B wire is used to refine the ingot grain, and the titanium wire is added at 1.5kg / tAl;

[0047] (5) Degassing: using degassing device for online degassing of melt;

[0048] (6) Filtration: use 30PPi+40PPi two-stage cerami...

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Abstract

The invention provides a method for manufacturing an aluminium alloy sheet for an automobile fuel tank. The method comprises the steps of batching, smelting, refining, grain refining, degassing, filtering, casting, saw-cutting, milling, homogenized heating, hot-rolling, cold-rolling, cleaning, low-temperature stabilized annealing, transverse shearing, edge straightening, board cutting, inspecting and the like. The aluminium alloy sheet for the automobile fuel tank has the advantages of stable mechanical property, precise dimensional tolerance, finish surface and the like. Compared with the present plastic fuel tank, the automobile fuel tank manufactured by the aluminium alloy sheet produced by the method has the advantages of high strength, sun exposure resistance, aging resistance, breakage prevention, environmental protection and the like, and also has the advantages of corrosion resistance, rusting avoidance, light weight, good economic benefits within the product life cycle, high material reutilization ratio and the like in comparison with a copper fuel tank.

Description

Technical field [0001] The invention relates to the technical field of aluminum alloy materials, in particular to a manufacturing method of aluminum alloy plates for automobile fuel tanks. Background technique [0002] At present, steel and plastic are commonly used materials for domestic automobile fuel tanks. However, steel fuel tanks are prone to electric sparks in the process of friction and impact, which can cause explosions; they are prone to rust when exposed to water, which affects the quality of the oil and cause fuel pump failure; and steel fuel tanks are bulky, which does not conform to the development trend of automobile lightweight. Plastic fuel tanks have disadvantages such as easy aging, easy damage, intolerance to impact, intolerance to sunlight, difficult to repair after breakage, and not environmentally friendly. Therefore, the automotive industry urgently needs to adopt new materials to manufacture fuel tanks. Summary of the invention [0003] In order to solv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C1/02C22C1/06C22F1/047C21D8/02
CPCC22C1/026C22C21/06C22C21/08C22F1/047
Inventor 曹晓国曹旷
Owner DALISHEN ALUMINUM
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