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Die-casting aluminum alloy, preparation method thereof and rotor end cover precursor

A technology for casting aluminum alloys and aluminum alloys, applied in the field of aluminum alloys, can solve problems such as inability to meet requirements, poor yield strength and tensile strength, and achieve enhanced and refined crystalline particles, high yield strength and tensile strength, and ensure stability. sexual effect

Pending Publication Date: 2022-05-13
DONGGUAN MODERN METAL PRECISION DIE CASTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the yield strength and tensile strength of existing die-casting aluminum alloys are poor, and cannot meet the requirements for automotive product parts that require high safety and light weight

Method used

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  • Die-casting aluminum alloy, preparation method thereof and rotor end cover precursor
  • Die-casting aluminum alloy, preparation method thereof and rotor end cover precursor
  • Die-casting aluminum alloy, preparation method thereof and rotor end cover precursor

Examples

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preparation example Construction

[0039] The application provides a method for preparing a die-casting aluminum alloy, which includes the following steps: performing a mixing and melting operation on aluminum alloy raw materials to obtain alloy aluminum liquid; performing a purification operation on the alloy aluminum liquid to obtain pre-die-casting aluminum liquid; The first preheating and heat preservation operation; transporting the pre-die-casting aluminum liquid to the die-casting machine for die-casting operation to obtain aluminum alloy die-casting parts; performing die-casting water quenching operation on the aluminum alloy die-casting parts to obtain die-casting aluminum alloy; Alloys undergo heat treatment operations.

[0040] In the above-mentioned preparation method of die-casting aluminum alloy, the density of the molten alloy aluminum can be effectively increased by purifying the melted alloy aluminum liquid, so that the alloy aluminum liquid has a higher yield strength and tensile strength. Al...

Embodiment 1

[0064] A high-strength die-casting aluminum alloy, comprising the following components and the weights of each component are:

[0065] Chemical composition: Si 8.52%, Fe 0.99%, Cu 3.54%, Mn 0.152%, Mg 0.41%, Ni0.075%, Zn 0.804%, Ti 0.122%, Pb 0.05%, Sn 0.20%, impurities 0-0.5%, The rest is Al.

[0066] The preparation method of the above-mentioned high-strength die-casting aluminum alloy comprises the following steps:

[0067] S1. Smelting: Put various raw materials into a common centralized melting furnace or a power frequency furnace to melt into molten aluminum, heat the molten aluminum to a temperature of 730°C-750°C, and use a common slag-removing agent (dosage ratio: 2kg / T) Slagging and slagging treatment, and sampling for chemical composition testing, chemical composition results: Si 8.41%, Fe 0.95%, Cu 3.53%, Mn 0.159%, Mg0.148%, Ni0.068%, Zn 0.82%, Ti 0.047 %, Pb 0.045%, Sn 0.203%, impurity 0-0.5%, and the rest is Al.

[0068] S2. Take 420kg of molten aluminum for ...

Embodiment 2

[0076] Chemical composition: Si 7.99%, Fe 0.81%, Cu 3.6%, Mn 0.159%, Mg 0.43%, Ni0.05%, Zn 0.734%, Ti 0.145%, Pb0.046%, Sn 0.21%, impurities 0-0.5% , and the rest are Al.

[0077] Experimental process is the same as example 1;

[0078] Experimental data:

[0079]

[0080]

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Abstract

The invention provides a die-casting aluminum alloy, a preparation method thereof and a rotor end cover precursor. The preparation method of the die-casting aluminum alloy comprises the following steps that aluminum alloy raw materials are mixed and melted, and alloy aluminum liquid is obtained; the alloy molten aluminum is purified, and pre-die-casting molten aluminum is obtained; carrying out primary preheating and heat preservation operation on the die-casting mold; the pre-die-casting molten aluminum is conveyed to a die-casting machine to be subjected to die-casting operation, and an aluminum alloy die casting is obtained; the aluminum alloy die casting is subjected to die-casting water quenching operation, and die-casting aluminum alloy is obtained; and carrying out heat treatment operation on the die-casting aluminum alloy. According to the preparation method of the die-casting aluminum alloy, the yield strength and the tensile strength of the die-casting aluminum alloy can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a die-casting aluminum alloy, a preparation method thereof, and a rotor end cover precursor. Background technique [0002] Now the automobile industry is in a new era of comprehensive change: the global automobile industry has entered an era of major changes in electrification, low-carbonization, lightweight, intelligence, networking, and shared development. Countries are increasingly stringent regulations and requirements. The automobile industry has produced major impacts and challenges, but also breeds huge opportunities for development. It is an inevitable trend that all kinds of fuel vehicles for transportation are replaced by lightweight electric vehicles and other new energy vehicles. The core basis of lightweight is materials. At present, the lightweight materials of automobiles basically use aluminum alloy instead of steel, and more importantly, they meet the nee...

Claims

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Application Information

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IPC IPC(8): B22D17/00C22C21/02
CPCB22D17/00C22C21/02
Inventor 章建鹏徐义武詹凤伟魏三宏田海勇
Owner DONGGUAN MODERN METAL PRECISION DIE CASTING CO LTD