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Aluminum alloy for all-aluminum trailer and preparation method thereof

An aluminum alloy and alloy technology, applied in the field of aluminum alloys, can solve the problems of failure to meet the requirements of formability, corrosion resistance and weldability, deterioration and decline of formability, corrosion resistance and weldability, and achieve broad market applications Good outlook, corrosion resistance and weldability, high strength effect

Active Publication Date: 2018-11-20
GUANGDONG XINGFA ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the strength of the alloy increases, the plasticity of the alloy begins to decline, and the formability, corrosion resistance and welding performance also begin to deteriorate, and it cannot meet the requirements of aluminum alloy formability, corrosion resistance and welding performance for the lightweight development of all-aluminum trailers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The present invention also provides a method for preparing the aluminum alloy for the all-aluminum trailer, which specifically includes the following steps:

[0025] The first step: select industrial pure aluminum ingot, pure magnesium ingot, instant silicon, Al10Li alloy, Al5Zr1C alloy and mixed rare earth RE as raw materials;

[0026] Step 2: Heat and melt the pure aluminum ingot at 720-760°C, add 0.4-0.6% pure magnesium ingot, 0.6-0.9% instant silicon and 5-7% Al10Li alloy to the total weight of raw materials, stir and melt Aluminum alloy liquid;

[0027] Step 3: After degassing and slag-removing the aluminum alloy liquid, add 0.2-0.4% of Al5Zr1C alloy and 0.03-0.05% of mixed rare earth RE to the total weight of the raw materials, and stir to make the composition of the aluminum alloy liquid uniform;

[0028] Step 4: Cool down the aluminum alloy liquid to 680-720°C and let it stand for 0.5-1 hour, then cast it into aluminum alloy;

[0029] Step 5: solid solution tr...

Embodiment 1

[0033] The aluminum alloy for an all-aluminum trailer according to the present invention is composed of the following components and mass percentages: Mg 0.4%, Si 0.6%, Li 0.5%, Zr 0.01%, C 0.002%, RE 0.03%, Fe≤0.15%, Mn ≤ 0.1%, the balance is Al and unavoidable impurities, single impurity ≤ 0.05%, total ≤ 0.15%, wherein the composition and mass percentage of RE are: Pr11.7%, Nd 24.5%, Pm 8.5 %, Sm 27.1%, Eu 2.4%, Gd 25.8%. The preparation method consists of the following steps:

[0034] The first step: select industrial pure aluminum ingot, pure magnesium ingot, instant silicon, Al10Li alloy, Al5Zr1C alloy and mixed rare earth RE as raw materials;

[0035] Step 2: Heat and melt the pure aluminum ingot at 720°C, add 0.4% pure magnesium ingot, 0.6% instant silicon and 5% Al10Li alloy to the total weight of the raw materials, stir and melt to form an aluminum alloy liquid;

[0036] Step 3: After refining the aluminum alloy liquid with hexachloroethane to degas and remove slag,...

Embodiment 2

[0040] The aluminum alloy for an all-aluminum trailer according to the present invention is composed of the following components and mass percentages: Mg 0.5%, Si 0.8%, Li 0.6%, Zr 0.015%, C 0.003%, RE 0.04%, Fe≤0.15%, Mn ≤ 0.1%, the balance is Al and unavoidable impurities, single impurity ≤ 0.05%, total ≤ 0.15%, wherein the composition and mass percentage of RE are: Pr11.7%, Nd 24.5%, Pm 8.5 %, Sm 27.1%, Eu 2.4%, Gd 25.8%. The preparation method consists of the following steps:

[0041] The first step: select industrial pure aluminum ingot, pure magnesium ingot, instant silicon, Al10Li alloy, Al5Zr1C alloy and mixed rare earth RE as raw materials;

[0042] Step 2: Heat and melt the pure aluminum ingot at 740°C, add 0.5% pure magnesium ingot, 0.8% instant silicon and 6% Al10Li alloy to the total weight of the raw materials, stir and melt to form an aluminum alloy liquid;

[0043] Step 3: After refining the aluminum alloy liquid with hexachloroethane to degas and remove slag...

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Abstract

The invention provides all-aluminum trailer aluminum alloy and a preparation method thereof. The all-aluminum trailer aluminum alloy comprises, by mass, 0.4-0.6% of Mg, 0.6-0.9% of Si, 0.5-0.7% of Li, 0.01-0.02% of Zr, 0.002-0.004% of C, 0.03-0.05% of Re, 0-0.15% of Fe, 0-0.1% of Mn, and the balance Al and inevitable impurities, wherein the single impurity is smaller than or equal to 0.05%, and the total amount of the impurities is smaller than or equal to 0.15%. The all-aluminum trailer aluminum alloy has the characteristics of being high in strength, good in plasticity and excellent in corrosion resistance and welding performance, is suitable for manufacturing carriages, trailer bodies, sleeper beams, cross beams and the like of van type all-aluminum trailers, container type all-aluminum trailers, oil tank type all-aluminum trailers, dropside all-aluminum trailers, stake all-aluminum trailers and the like, and has broad market application prospects.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, and in particular relates to an aluminum alloy for an all-aluminum trailer and a preparation method thereof. Background technique [0002] A trailer is a vehicle that is towed by a car and has no power drive itself, and is divided into a full trailer and a semi-trailer. Trailer is an important vehicle type for road transportation. Common trailers include slab trailers, flatbed trailers, low-bed trailers, barn trailers, van trailers, container trailers, dump trailers, oil tank trailers, and bulk cement trailers. trailers and vehicle transport trailers, etc. Traditional trailers are mainly made of steel materials. Although steel materials have the characteristics of high strength, they have disadvantages such as heavy weight and poor corrosion resistance, which lead to problems such as high fuel consumption, large emissions, short life, and high maintenance costs. Aluminum alloy has the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/03
CPCC22C1/026C22C1/03C22C21/02
Inventor 聂德键李辉罗铭强王顺成
Owner GUANGDONG XINGFA ALUMINUM