Casting extruding compound shaping method of magnesium alloy automobile hub
An automobile wheel hub, composite forming technology, applied in the direction of wheels, spoked wheels, vehicle parts, etc., can solve the problems of high production cost, complex process, many equipment, etc., and achieve the advantages of small grain size, simplified process and reduced production cost. Effect
Inactive Publication Date: 2003-07-16
ZHONGBEI UNIV
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Problems solved by technology
This method makes the wheel hub made of magnesium alloy material have good structure and mechanical properties, but the process is complicated, more equipment is required, the investment is large, and the production cost is very high
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[0011] figure 1 Shown is the automobile wheel hub, which is a typical part of ring and disk parts, and its structure and shape are very complex. The magnesium alloys suitable for casting and extrusion composite forming automobile hubs include Mg-Mn, Mg-AL-Zn and Mg-Zn- Alloys such as Zr. In this specific implementation, the Mg-Zn-Zr alloy MB15 magnesium alloy is selected.
[0012] Magnesium alloy automobile wheel hub cast-extrusion composite forming method, its specific process and steps are as follows:
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A technology for forming the Mg-alloy hub of car features three procedures of preshaping, upsetting-squeezing formation and fine trimming and includes such steps as casting a blank; after preshaping,making allowance for apsetting-squeezing formation; upsetting-squeezing formation and deformation degree during isothermal squeezing by using the critical-controlled deformation method; coating graphite lubricant inside the die; and fine trimming. Its advantages are fine crystal grains, and high mechanical performance and surface quality.
Description
1. Technical field [0001] The invention belongs to the casting and extruding forming technology of magnesium alloy, in particular to the casting-extruding composite forming method of magnesium alloy automobile wheel hub and ring or disc-shaped parts. 2. Background technology [0002] With the development of the domestic automobile industry, especially the continuous innovation of high-end automobiles, in order to reduce the weight of the automobile itself, improve fuel efficiency, reduce emission pollution, and ensure automobile safety, magnesium alloy materials are increasingly favored by automobile manufacturers. and has begun to be applied. For ring-disc parts such as automobile wheels, gravity casting, ingot-die forging, ingot-die forging-rolling and other methods are currently used to manufacture them. For example: "Research on Magnesium Alloy Automobile Wheel Casting" published in "Casting Technology" magazine in May 2001, the conclusion of the research on the product...
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IPC IPC(8): B21C23/00B60B3/06C22F1/06
Inventor 张治民王强李保成张星李国俊
Owner ZHONGBEI UNIV
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