Magnesium alloy vehicle hub molding device and molding process

Abstract

The invention discloses a magnesium alloy vehicle hub molding device and a molding process. The molding process comprises the following steps: (A) semi-finished hub blanks are put on a mold core and a pressure bearing tray; a pressurizing disc with corresponding diameter is adjusted to apply axial force on the semi-finished hub blanks; and the pressure is 0.5-10 T; (B) a heating system is adopted to heat a rolling disc, the mold core, the pressure bearing tray and the pressurizing disc of a mold bearing mechanism and the semi-finished hub blanks; and the heating temperature is 250-450 DEG C; and (C) roller discs corresponding to the semi-finished hub blank structures in outer edge arc are selected in sequence to perform the lateral and axial rolling of thinning, extrusion, extension and flanging for the semi-finished hub blanks; the transverse extrusion pressure of the roller discs is 0.5-10 T; and the axial pressure is 1-10 T. The process effectively overcomes the problems of multiple steps, multiple molds and single material flowing direction caused by repeated machining re-extrusion in a traditional process, optimizes the material mechanical performance of hubs, reduces the manufacturing cost, and effectively widens the application prospect of magnetism alloy materials on the manufacturing of vehicle hubs.

Description

technical field [0001] The invention relates to a metal extrusion forming device and a forming process. In particular, it involves the subsequent reprocessing of the forged or cast magnesium alloy automobile wheel semi-finished blank below the meridian and the rim part. The forming device and forming process for reprocessing such as flat seam line, stop line, tire mounting lip line and outer circular edge line on the side. Background technique [0002] With the rapid development of the automobile industry, a consensus has been reached in the industry to realize the "lightweight" of automobiles. [0003] Magnesium alloy material is the lightest, strongest and most suitable material for manufacturing automobile wheels found after aluminum. [0004] The car hub is an unsprung mass, and the reduction in the weight of the car hub has a better energy-saving effect than the reduction in the weight of the car body. [0005] At room temperature, plastic deformation of magnesium al...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a magnesium alloy automobile wheel forming device and forming process, which subverts the process idea of ​​the prior art, and effectively overcomes the traditional process due to multi-step, multi-mold, repeated machining and then extrusion. Due to the problem of single material flow caused by pressing, the unique rolling mechanism of lateral and axial rolling, extrusion, stretching and flanging forming processes makes the production of magnesium alloy automobile wheels simple, reliable and fast. In addition, the mechanical properties of the material of the wheel hub can be optimized, and the manufacturing cost is greatly reduced, which effectively expands the application prospect of magnesium alloy materials in the manufacture of automobile wheels.

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