Wheel hub low-pressure casting technology
A low-pressure casting, wheel hub technology, applied in the field of casting technology, can solve the problems of cracking, loose organization, affecting the quality of wheel hub castings, etc.
Active Publication Date: 2019-08-30
FOSHAN NANHAI SUPERBAND MOLD
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Problems solved by technology
However, due to the influence of the structure of the hub product, the hub castings produced by the above-mentioned traditional low-pressure casting process often have pores, which lead to loose internal structure of the hub casting, and even involve the oxide film during the casting process, and the oxide film flows to the hub casting. cracks on the surface, seriously affecting the quality of the wheel hub castings
Method used
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[0018] The hub low-pressure casting process applying the technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0019] Such as figure 2 Shown is the equipment used to realize the low-pressure casting process of the wheel hub, including the wheel hub mold 2, the holding furnace 5 for containing the molten metal, and the liquid riser 4. Wherein, the hub mold 2 includes a pair of side molds (21, 21a) and an upper mold 22 and a lower mold 23 respectively located on the upper and lower sides of the pair of side molds (21, 21a). Between the pair of side molds (21, 21a), the upper mold 22 and the lower mold 23, a hub cavity 3 for manufacturing the hub is enclosed. The hub cavity 3 includes a first cavity 31 for casting the spokes of the hub and a central mounting platform, and a second cavity 32 for casting the rim of the hub, the first cavity 31 and The second cavity 32 communicates with each other, and further...
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The invention provides a wheel hub low-pressure casting technology. The wheel hub low-pressure casting technology involves a wheel hub mold cavity, a heat preservation furnace and a liquid rising pipe, wherein the wheel hub mold cavity is used for manufacturing a wheel hub, the heat preservation furnace is used for containing molten metal, and the liquid rising pipe is used for communicating the wheel hub mold cavity with a heat preservation furnace inner containing cavity; the wheel hub mold cavity comprises a first mold cavity used for casting a spoke and a central mounting table of the wheel hub, and a second mold cavity used for casting a rim of the wheel hub, and the first mold cavity and the second mold cavity communicate with each other; and the wheel hub mold cavity further comprises a molten liquid inlet communicating with the first mold cavity, and the molten liquid inlet communicates with the liquid rising pipe. The technology has the beneficial technical effects that a moldfilling stage is divided into a mold filling first stage and a mold filling second stage, the pressure rising rate relation among a liquid rising stage, the mold filling first stage and the mold filling second stage is set to be A1>A3>A2, so that the flow rates of the molten metal in the liquid rising pipe, the first mold cavity and the second mold cavity can be well controlled; and on the basisthat a temperature field of a wheel hub casting is ensured to be kept balanced, the defect caused by the fact that the air and the oxidation film are involved in is effectively overcome, and the quality of the wheel hub casting is effectively improved.
Description
technical field [0001] The invention relates to a casting process, in particular to a wheel hub low pressure casting process for manufacturing automobile wheel hubs, the casting process can greatly improve the manufacturing quality of the wheel hub castings. Background technique [0002] The wheel hub is one of the most core components in automobile products. Common structures such as figure 1 As shown, the hub 1 includes a cylindrical rim 11 and a plurality of spokes 12 radially arranged in the inner space of the rim 11 , and the number of the spokes 12 is generally not less than three. A central installation platform 13 for connecting the power output shaft is also arranged at the intersection of the spokes 12 . from figure 1 From the structure shown, it can be seen that the wall thicknesses of the central mounting platform 13, the spokes 12 and the rim 11 vary in gradients, wherein the central mounting platform 13 has the largest wall thickness, while the rim 11 has the...
Claims
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IPC IPC(8): B22D18/04B22D18/08
CPCB22D18/04B22D18/08
Inventor 简伟文束克瑜陈振明吴概陈庆勋
Owner FOSHAN NANHAI SUPERBAND MOLD