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Magnesium alloy hub manufacture

A manufacturing method, magnesium alloy technology, applied in the direction of the wheel hub, transportation and packaging, vehicle parts, etc., can solve the problems that the magnesium alloy hub is difficult to meet the mechanical performance requirements, the quality of the casting is very sensitive, and the metal mold is airtight, etc. , to achieve the effect of good fuel saving, wide applicability and smooth surface

Inactive Publication Date: 2003-09-03
重庆镁业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the traditional metal mold casting process is used to produce magnesium alloy wheels, there will be the following disadvantages: the metal mold is airtight, and there is no concession, and it is easy to cause defects such as insufficient pouring, cracks, shrinkage cavities, and pores of the casting; Temperature, alloy pouring temperature and pouring method are very sensitive to the quality of castings
Therefore, it is difficult to meet the requirements of mechanical properties for magnesium alloy wheels cast by traditional metal molds.

Method used

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  • Magnesium alloy hub manufacture
  • Magnesium alloy hub manufacture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Magnesium alloy wheel products are used in MT2.5×10 front and rear wheels on Lingying motorcycle produced by Huaying Company.

[0049] A: On the basis of AZ81 magnesium alloy material, 1.9% of the total weight of rare earth mixed elements containing 50% of cerium is added.

[0050] B: Using a MgCl at 38% by weight 2 , 4% by weight of CaF 2 , 47% by weight of KCl, 8% by weight of BaCl 2 , 3% by weight of MgO is the magnesium alloy covering agent of raw material (addition is 2% of the smelting amount of magnesium alloy material), and a magnesium alloy refining agent ( The addition amount is 0.6% of the smelting amount of the magnesium alloy material), and 0.4% of the total amount of zirconium chloride is added to refine the grains of the magnesium alloy melt.

[0051] C. to use figure 1 The hub mold shown, and the mold cavity is sprayed and poured. The pouring speed should be slow first, then fast, and then slow. During the pouring process, the liquid flow should be...

Embodiment 2

[0064] Magnesium alloy wheels are used for 18-inch front and rear wheels on power bicycles produced by Chongqing Longding Power Machinery Co., Ltd.

[0065] A. On the basis of AM50A magnesium alloy material, 1.2% of the total weight of rare earth mixed elements containing 85% of neodymium is added.

[0066] B, adopt a kind of MgCl of 37% by weight 2 , 5% CaF by weight 2 , 45% by weight of KCl, 9% by weight of BaCl 2 , MgO of 4% by weight is a magnesium alloy covering agent (the addition amount is 4% of the smelting amount of the magnesium alloy material), a magnesium alloy refining agent with 74% by weight of NaCl and 26% by weight of KCl as raw materials (adding The amount is 0.8% of the smelting amount of the magnesium alloy material), and 1.2% calcium chloride is added to refine the grain of the magnesium alloy melt.

[0067] C. Same as step C of Example 1.

[0068] D. The as-cast quenching method is adopted for the heat treatment of the wheel hub: when the casting is c...

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Abstract

A technology for manufacturing the Mg-alloy wheel hub includes such steps as preparing Mg alloy by additional use of RE element (0.5-2.0 wt.%) as part of its raw materials, smelting while adding the Mg-alloy coveriong agent prepared from MgCl2, CaF2, KCl, BaCl2 and MgO and the refining agent prepared from NaCl and KCl, preparing mould, spraying on inner surface of mould, casting, heat treating and surface treating. Its advantages are high strength, precision and surface finishing quality, high vibration damping effect, and saving oil.

Description

1. Technical field [0001] The present invention relates to a method for manufacturing a magnesium alloy wheel hub, and more particularly, to a method for manufacturing a magnesium alloy wheel hub for motorcycles. 2. Technical background [0002] Wheel hub is one of the heaviest parts on motorcycles, automobiles and other vehicles, and it is also one of the most important parts. The weight of the wheel hub is an important factor affecting the performance of the vehicle. A little weight reduction will significantly improve the vehicle's starting performance, braking performance, cornering performance and reduce fuel consumption. Among all metal materials, magnesium alloy is the lightest, and the density of magnesium is only 1.74g / cm 3 , magnesium-based magnesium alloys are about 36% lighter than aluminum alloys, about 73% lighter than zinc alloys, and about 77% lighter than steel. And magnesium alloy also has a series of advantages such as high specific strength, specific e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D25/06B60B27/00C22C23/06
Inventor 曹建勇章宗和唐贵兵涂建华王军
Owner 重庆镁业科技股份有限公司
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