Magnesium alloy wheel forging forming method and die

Abstract

The invention discloses a magnesium alloy wheel forging forming method and a die, belonging to magnesium alloy wheel forging forming process and process equipment. The method comprises pre-forging, final-forging and flaring forming; and the used die comprises a pre-forging die, a final-forging die and a flaring forming die. According to the method, in the pre-forging, formation of a hub of a wheel and pre-formation of a wheel arm and a felloe are carried out; in the final-forging, the wheel arm, an outer wheel rim and a cylindrical felloe having an inner wall with a certain taper and a vertical outer wall; and in the flaring forming, the final shape of the felloe of the wheel and a formed inner rim are obtained. The magnesium alloy wheel forging forming method provided by the invention has the advantages that process is simple, the surface and interior quality of the wheel forging piece are good, the mechanical property of the wheel forging piece is excellent, industrial large-scale production is easy to realize, and the like; and the die disclosed by the invention is reliable in work, convenient to regulate and long in service life.

Description

technical field [0001] The invention relates to a magnesium alloy wheel forging forming process and process equipment, including pre-forging, final forging, and flaring forming of the magnesium alloy wheel hub, rim and rim, and the used pre-forging die, final forging die, and flaring forming die. By applying the process and the mold provided by the invention, the industrialized production of magnesium alloy wheel forgings in large quantities can be realized. Background technique [0002] Among the currently used engineering materials, magnesium alloy is the material with the smallest specific gravity, and its specific gravity is only 1 / 4 of that of steel and 2 / 3 of that of aluminum. Magnesium alloy has higher specific strength and specific stiffness than steel and aluminum alloy materials, and has excellent shock resistance, impact resistance, wear resistance and cutting performance. With the continuous improvement of smelting technology, the price of magnesium alloys has d...

AI Technical Summary

Problems solved by technology

However, the lack of mature and practical forged magnesium alloy wheel technology and technology has become a bottleneck in the use and advancement of forged magnesium alloy wheels

U.S. Patent US005902424A discloses a magnesium alloy wheel forming method, which adopts the process of casting billet-forging-T6 treatment-rotary forging-rolling to manufacture the wheel hub. The mechanical properties of the product are good, but the process is complicated, requiring many equipment and high production cost. ; Patent 200610012829.9 discloses a wheel forming method and device, the process is: casting billet - homogenization treatment - preformed billet - reverse extrusion forming - upsetting front rim - flaring rear rim - finishing

The purpose of using multiple processes in this process is to reduce the forming force, but the process is too complicated and cumbersome, the production efficiency is low, and the cost is too high; the patent ZL200920088829.6 uses a bent pin mechanism to realize split mold clamping, that is, the bent pin passes through the inclined pin The holes drive the die inserts to separate and close. This mold clamping mechanism will lead to low rigidity and reliability of the mold during operation; the forming process of the magnesium alloy wheel disclosed in patent 200810054600.0 is: upsetting—reverse extrusion—machining—one forward extrusion Pressing-secondary positive extrusion-flaring, this process has too many steps, so the efficiency is low and the cost is high

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