A kind of high-performance aluminum alloy for casting thin-walled structural parts and its preparation method

A kind of thin-walled structural parts, high-performance technology, applied in the field of aluminum alloy, can solve the problems such as the difficulty of sequential filling of molten metal, unfavorable air and smooth discharge of oxidation slag, etc., to achieve good machinability, uniform ingot size, good welding sexual effect

Active Publication Date: 2021-08-31
保定隆达铝业有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The overall shape is arc-shaped, and there are many criss-crossing ribs and ribs in the shape, and there are also local round table features, which cause difficulties for the sequential filling of molten metal in the die-casting process, and are not conducive to these round table The air in the rib structure and the smooth discharge of oxidation slag

Method used

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  • A kind of high-performance aluminum alloy for casting thin-walled structural parts and its preparation method
  • A kind of high-performance aluminum alloy for casting thin-walled structural parts and its preparation method
  • A kind of high-performance aluminum alloy for casting thin-walled structural parts and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A high-performance aluminum alloy for casting thin-walled structural parts, which consists of the following components in weight percentage:

[0055]

[0056] The preparation method of the high-performance aluminum alloy for casting thin-walled structural parts comprises the following steps:

[0057] 1) Feeding:

[0058] The forklift picks up the tray, puts aluminum ingots for remelting and industrial silicon into the melting / alloying furnace in batches, and starts melting;

[0059] 2) Melting alloying:

[0060] The melting and heating method adopts a regenerative combustion system. After the aluminum ingot is completely melted, it reaches 750°C. Add electrolytic manganese and fully stir for 2 minutes. Continue to heat up to 780°C. When it reaches this temperature, keep it for 40 minutes. Stir twice during the holding period, each time for 2 minutes.

[0061] 3) adjust

[0062] After the alloying is completed, add the reserved electrolytic aluminum cooling materia...

Embodiment 2

[0077] A high-performance aluminum alloy for casting thin-walled structural parts, which consists of the following components in weight percentage:

[0078]

[0079] The preparation method of the high-performance aluminum alloy for casting thin-walled structural parts comprises the following steps:

[0080] 1) Feeding:

[0081] The forklift picks up the tray, puts aluminum ingots for remelting and industrial silicon into the melting / alloying furnace in batches, and starts melting;

[0082] 2) Melting alloying:

[0083] The melting and heating method adopts a regenerative combustion system. After the aluminum ingot is completely melted, it reaches 750°C, then adds electrolytic manganese and stirs thoroughly for 2 minutes, then continues to heat up to 800°C, reaches this temperature and maintains it for 50 minutes, stirring 3 times during the holding period, 3 minutes each time.

[0084] 3) adjust

[0085] After the alloying is completed, add the reserved electrolytic alum...

Embodiment 3

[0100] A high-performance aluminum alloy for casting thin-walled structural parts, which consists of the following components in weight percentage:

[0101]

[0102]

[0103] 1) Feeding:

[0104] The forklift picks up the tray, puts aluminum ingots for remelting and industrial silicon into the melting / alloying furnace in batches, and starts melting;

[0105] 2) Melting alloying:

[0106] The melting and heating method adopts a regenerative combustion system. After the aluminum ingot is completely melted, it reaches 750°C. Add electrolytic manganese and fully stir for 2 minutes. Continue to heat up to 790°C. When it reaches this temperature, keep it for 50 minutes. During the holding period, stir twice, 2 minutes each time.

[0107] 3) adjust

[0108] After the alloying is completed, add the reserved electrolytic aluminum cooling material and titanium, and stir for 1 minute; add magnesium ingots, and use tools to press the magnesium ingots below the liquid level of the ...

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Abstract

The invention discloses a high-performance aluminum alloy for casting thin-walled structural parts and a preparation method thereof. The aluminum alloy is composed of the following components in weight percent: Si9.5‑11.0%, Fe≤0.15%, Mg0. 26‑0.35%, Zn≤0.05%, Mn0.5‑0.6%, Cu≤0.03%, Ti0.05‑0.15%, Ca≤0.002%, Na≤0.002%, P≤0.002%, Sb≤0.005%, Sr0 .010‑0.025%, Cd≤0.01%, Li≤0.001%, and the balance is Al. The present invention is designed and researched in terms of composition design, material selection, purification treatment, casting process, etc., and provides a tensile strength≥ 220MPa, yield strength ≥ 130MPa, elongation ≥ 6.0%, aluminum alloy that can meet the production needs of automobile shock towers.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a high-performance aluminum alloy for casting thin-walled structural parts and a preparation method thereof. Background technique [0002] With the demand for environmental protection and energy saving, the lightweight design of automobiles has become the trend of the world's automobile development. The development of automobile lightweight is inseparable from the development of materials, molding technology, equipment, structural design and other related fields. Among them, the die-casting process of structural parts and the manufacturing technology of materials for structural parts are the key to the development of lightweight automobiles. [0003] High-performance aluminum alloy structural parts materials, because of their difficulty in production and high technical content, for a long time, domestic aluminum alloy materials for structural parts have been dependent on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/02C22C1/06B22D21/00C22F1/043
CPCB22D21/007C22C1/026C22C1/06C22C21/02C22F1/043
Inventor 郭军辉叶艳平赵玉兵刘钊马洪友
Owner 保定隆达铝业有限公司
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