Corrosion resistance and high temperature resistance magnesium alloy wheel hub and preparation method thereof

A magnesium alloy, high-temperature-resistant technology, applied in wheel manufacturing, wheels, web-type wheels, etc., can solve the problems of easy damage and beauty, and achieve the effect of improving appearance, strengthening surface strength and avoiding wear

Active Publication Date: 2019-10-15
内蒙古中钰镁合金锻造轮毂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a corrosion-resistant and high-temperature resistant magnesium alloy wheel hub and its preparation method to solve the problems of easy damage and aesthetics mentioned in the above-mentioned background technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A corrosion-resistant and high-temperature magnesium alloy wheel hub, wherein the mass percentage of the magnesium alloy includes the following alloy elements: Al: 4.0-6.5%, Zn: 1.2-3.0%, Mn: 0.8-1.5%, Yb: 0.1-3.3%, N : 0.3 to 0.8%, Si: 0.8 to 2.3%, Cr: 18 to 25%, W: ≤2.5%, Zr: 0.2 to 0.6%, and the balance is Mg and inevitable impurity elements. The outer surface of the wheel hub is processed by micro-arc oxidation to form a ceramic film on the surface of the product, which is then baked and sprayed with paint.

[0050] A ceramic film is formed on the surface of the product of the invention, which strengthens the surface strength, and prevents the protective layer from breaking due to abrasion, bumping and scratching of the wheel. At the same time, the overall performance and appearance of the magnesium alloy core are improved by adding trace elements that are resistant to high temperature and oxidation.

[0051] Preferably, the mass percentage of the magnesium alloy i...

Embodiment 2

[0059] A method for manufacturing a corrosion-resistant and high-temperature magnesium alloy wheel hub, comprising the following steps:

[0060] Step 1. Preheating: use a composite crucible, the inner layer is made of heat-resistant boiler steel with a thickness of 20mm to 30mm, and the outer layer is made of stainless steel plates with a thickness of 4mm to 6mm by explosion and composite, and the magnesium ingot is preheated at 100 ℃. Heat for 60min, then heat up to 300℃ for 60min;

[0061] Step 2. Alloying: the magnesium ingot is melted, and heated to 680℃~700℃ to add trace elements; mechanically stir for 15min, and pour SF into the closed environment of the magnesium alloy liquid 6 and CO 2 Mix gas, let stand for 90min, and heat to 725℃~740℃ for 60min;

[0062] Step 3, refining: 750℃~760℃, using PFD anaerobic refining;

[0063] Step 4. Casting: cooling to 695℃~705℃, using medium frequency electromagnetic casting;

[0064] Step 5, material preparation: homogenize the cas...

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PUM

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Abstract

The invention relates to a corrosion resistance and high temperature resistance magnesium alloy wheel hub and a preparation method thereof. A magnesium alloy comprises, by mass, 4.0-6.5% of Al, 1.2-3.0% of Zn, 0.8-1.5% of Mn, 0.1-3.3% of Yb, 0.3-0.8% of N, 0.8-2.3% of Si, 18-25% of Cr, less than or equal to 2.5% of W, 0.2-0.6% of Zr, and the balance Mg and inevitable impurity elements. The outer surface of the wheel hub is treated by micro arc oxidation to form a ceramic film on the product surface and then baked and coated with paints. According to the corrosion resistance and high temperature resistance magnesium alloy wheel hub and the preparation method thereof, the ceramic film is formed on the product surface through the micro arc oxidation treatment, so that the surface strength isstrengthened, the damage of a protective layer caused by the wear, bump and scratch of a wheel is avoided, and the corrosion resistance, high temperature resistance and aesthetics of the wheel hub aregreatly improved.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a corrosion-resistant and high-temperature magnesium alloy wheel hub and a preparation method thereof. Background technique [0002] Regarding the manufacturing materials of wheel hubs, the world is currently developing towards the three trends of lightweight, safety and environmental protection. The lightweight, thermal conductivity and metal properties of the material itself are better than those of aluminum. Regarding the application and advantages of lightweight materials, lightweight magnesium alloy wheels are used to replace the original products on electric vehicles, and the four wheels are replaced. The energy consumption of the car will be reduced by 20%, the acceleration will be greater, and the handling feeling will be significantly improved. Magnesium alloy wheels will become a popular trend in the future. However, magnesium alloys have poor corrosion resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/02C22F1/06B24C1/08B60B3/00B23P15/00
CPCB23P15/00B24C1/086B60B3/00B60B2310/202B60B2310/208B60B2360/10C22C1/02C22C23/02C22F1/002C22F1/06
Inventor 黄贵彬
Owner 内蒙古中钰镁合金锻造轮毂有限公司
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