Aluminum alloy profile for firefighting truck and preparation method thereof

A technology of aluminum alloy profiles and fire trucks, which is applied in the field of aluminum alloys to achieve the effects of reducing the secondary dendrite spacing, increasing the recrystallization temperature, and increasing the tensile strength

Inactive Publication Date: 2018-06-08
安徽鑫铂铝业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing aluminum alloy profiles for fire truck bodies still need to be improved in terms of impact resistance, strength, hardness, and fatigue resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The present invention proposes an aluminum alloy profile for a fire truck. The aluminum alloy profile includes the following components by mass percentage: Cu 0.1%, Si 0.4%, Fe 0.25%, Cr 0.1%, Mg 0.55%, Mn 0.3%, Zn 0.1%, Ti0.2%, Li 0.04%, Ni 0.12%, Y 0.06%, Ca 0.04%, and the balance is Al.

[0018] The present invention also proposes a method for preparing the above-mentioned aluminum alloy profiles for fire trucks, comprising the following steps:

[0019] S1. Mixing industrial pure aluminum and various intermediate alloys, smelting, and casting to obtain ingots;

[0020] S2. Place the cast ingot in a heating furnace for homogenization annealing treatment. First, heat up to 280°C at a rate of 120°C / h, keep it for 1h, then raise the temperature to 350°C at a rate of 100°C / h, keep it for 1h, and then Raise the temperature to 440°C at a rate of 40°C / h, keep it warm for 5 hours, take it out, spray water to cool it to 250°C, and then air cool to room temperature;

[0021] ...

Embodiment 2

[0024] The present invention proposes an aluminum alloy profile for a fire truck, the aluminum alloy profile includes the following components by mass percentage: Cu 0.18%, Si 0.44%, Fe 0.3%, Cr 0.12%, Mg 0.66%, Mn 0.35%, Zn 0.16%, Ti0.28%, Li 0.05%, Ni 0.14%, Y 0.09%, Ca 0.05%, and the balance is Al.

[0025] The present invention also proposes a method for preparing the above-mentioned aluminum alloy profiles for fire trucks, comprising the following steps:

[0026] S1. Mixing industrial pure aluminum and various intermediate alloys, smelting, and casting to obtain ingots;

[0027] S2. Place the cast ingot in a heating furnace and perform homogenization annealing treatment. First, heat up to 285°C at a rate of 120°C / h, keep it for 1h, then raise the temperature to 355°C at a rate of 100°C / h, keep it for 1h, and then Raise the temperature to 445°C at a rate of 40°C / h, keep it warm for 5.5 hours, take it out, spray water to cool it to 255°C, and then air cool to room temperat...

Embodiment 3

[0031] The present invention proposes an aluminum alloy profile for a fire truck, the aluminum alloy profile includes the following components by mass percentage: Cu 0.25%, Si 0.3%, Fe 0.32%, Cr 0.15%, Mg 0.55%, Mn 0.4%, Zn 0.3%, Ti0.3%, Li 0.05%, Ni 0.15%, Y 0.09%, Ca 0.06%, and the balance is Al.

[0032] The present invention also proposes a method for preparing the above-mentioned aluminum alloy profiles for fire trucks, comprising the following steps:

[0033] S1. Mixing industrial pure aluminum and various intermediate alloys, smelting, and casting to obtain ingots;

[0034] S2. Place the cast ingot in a heating furnace for homogenization annealing treatment. First, heat up to 290°C at a rate of 120°C / h, keep it for 1.5h, then raise the temperature to 360°C at a rate of 100°C / h, and keep it for 1.5h , then heat up to 450°C at a rate of 40°C / h, keep warm for 6 hours, take it out, spray water to cool it to 260°C, and then air cool to room temperature;

[0035] S3. Hot-ro...

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PUM

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Abstract

The invention discloses aluminum alloy profile for a firefighting truck and a preparation method thereof, and relates to the technical field of aluminum alloy. The aluminum alloy profile comprises thefollowing components of, by mass, 0.1-0.3% of Cu, 0.3-0.5% of Si, 0.25-0.4% of Fe, 0.1-0.2% of Cr, 0.55-0.85% of Mg, 0.3-0.5% of Mn, 0.1-0.3% of Zn, 0.2-0.4% of Ti, 0.04-0.08% of Li, 0.12-0.18% of Ni, 0.06-0.12% of Y, 0.04-0.08% of Ca and the balance Al. According to the aluminum alloy profile for the firefighting truck and the preparation method thereof, all the elements of the aluminum alloy profile and the content of the elements are reasonably optimized, the preparation technology is optimized, the prepared aluminum alloy profile has excellent mechanical properties and is high in strengthand hardness, good in ductility and excellent in impact resistance and fatigue resistance, and cracking and other phenomena are not prone to occurring when firefighting truck body parts are subjectedto punch forming.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to an aluminum alloy profile for a fire truck and a preparation method thereof. Background technique [0002] Aluminum alloy is widely used in vehicle manufacturing and other technical fields due to its light weight, corrosion resistance, good processing and forming performance, high recovery and reuse rate, and has become the most ideal material for vehicle weight reduction. Due to the formability, dent resistance, bake hardenability (after painting) and the resulting high mechanical strength of aluminum alloys in the outer body panels of vehicles, it is possible to manufacture thinner gauges and lighter weights with A Grade surface finish sheet. However, the existing aluminum alloy profiles for fire truck bodies still need to be improved in performances such as impact resistance, strength, hardness, and fatigue resistance. Contents of the invention [0003] Based on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/03C22F1/047
CPCC22C21/08C22C1/026C22C1/03C22F1/047
Inventor 唐开健陈未荣王超
Owner 安徽鑫铂铝业股份有限公司
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