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Preparation process of a high-performance 5454-o/h111 aluminum alloy plate

A technology of aluminum alloy plate and preparation process, which is applied in the field of aluminum alloy, can solve problems such as limited application range and high temperature resistance, and achieve the effects of improving production efficiency, reducing performance fluctuations, and stabilizing internal organization

Active Publication Date: 2019-11-19
TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the 5182 aluminum alloy sheet is not resistant to high temperature, which limits the application range of the tanker manufactured by the 5182 aluminum alloy sheet, while the 5454 aluminum alloy sheet is resistant to high temperature and can transport medium with higher temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation technology of 5454 aluminum alloy plate, comprises the steps:

[0020] A. Ingredients: ingredients according to the following mass percentages: Si 0.07%, Fe 0.23%, Cu 0.02%, Mn 0.8%, Mg 2.8%, Cr 0.08%, Zn 0.01%, Ti 0.015%, other single impurities ≤ 0.05%, impurities The total amount≤0.15%, the balance is Al;

[0021] B. Smelting: put the prepared aluminum alloy raw materials in a melting furnace for melting, and pour the melted aluminum alloy melt into a refining furnace for refining. The refining temperature is 720°C, and the refining time is 15 minutes. The refined aluminum alloy The melt was left to stand at 710°C for 20 minutes;

[0022] C. Introduce high-purity inert gas into the refined aluminum alloy melt and stir the melt to remove impurity gases in the aluminum alloy melt, and pass the degassed aluminum alloy melt through a foam ceramic filter plate with a pore size ≥ 30ppi filter to remove impurities;

[0023] D. adding aluminum titani...

Embodiment 2

[0026] The difference between Example 2 and Example 1 is that the aluminum alloy ingot is kept at 500°C for 3.5 hours, and then rolled out of the furnace to form an aluminum alloy plate, wherein the finishing temperature of hot rolling is 320°C.

Embodiment 3

[0028] The difference between Example 3 and Example 1 is that the aluminum alloy ingot is kept at 500°C for 3.5 hours, then the temperature is lowered to 450°C within 1 hour and kept at 2 hours, and then it is rolled out of the furnace to form an aluminum alloy plate, wherein the final hot rolling temperature is is 320°C.

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Abstract

The invention belongs to the technical field of aluminum alloys and relates to a preparing technology for an O / H111 state 5454 aluminum alloy plate. The O / H111 state 5454 aluminum alloy plate includes, by mass percent, smaller than or equal to 0.15% of Si, smaller than or equal to 0.3% of Fe, smaller than 0.2% of Cu, 0.8%-1% of Mn, 2.8%-3.0% of Mg, 0.08%-0.12% of Cr, smaller than 0.1% of Zn, smaller than or equal to 0.025% of Ti, smaller than or equal to 0.05% of each of other impurities and the balance Al, wherein the total amount of other impurities is smaller than or equal to 0.15%. A castingot composed of the above components is subjected to heat preservation for 2 h to 3.5 h under the temperature of 500 DEG C, the temperature is reduced to 450 DEG C for heat preservation in the timezone, then the cast ingot is discharged out of a furnace to be rolled, and the hot rolling finishing rolling temperature is controlled to be larger than or equal to 320 DEG C. By means of the 5454 aluminum alloy plate prepared through the technology, the tensile strength of the 5454 aluminum alloy plate is larger than 250 MPa, the yield strength is larger than 130 MPa, and the elongation is largerthan 22%. By means of the machining technology, high-strength and high-elongation 5454-O / H111 state plates can be produced in a batched manner, and the safety of tank trucks in the use process can bebetter ensured due to the plates.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, and relates to a preparation process of a 5454 aluminum alloy plate in O / H111 state. Background technique [0002] Compared with carbon steel, aluminum alloy has the advantages of low density, good electrical conductivity, good corrosion resistance, good heat dissipation, easy processing, simple maintenance and long service life, so it gradually replaces carbon steel as the main material for manufacturing tank cars. [0003] The commonly used materials for manufacturing tank cars are 5182 and 5454 aluminum alloy plates, and the state is O state or H111 state. The strength and elongation of the 5182 aluminum alloy sheet are higher than those of the 5454 aluminum alloy sheet, so the thickness of the tank body made of the 5182 aluminum alloy sheet is thinner, and the weight of the tank car is also lighter. However, the 5182 aluminum alloy sheet is not resistant to high temperature, which li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C21/06C22F1/047C22C1/06
CPCC22C1/06C22C21/06C22C21/08C22F1/047
Inventor 张义杨直达陈金生王飞曾招芬齐文刚赵飞徐驰郭富安姜远军
Owner TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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