Improved hub casting mold system and hub casting method

Abstract

The invention discloses an improved hub casting mold system and a hub casting method. The improved hub casting mold system comprises a hub casting mold, a casting mold cavity for forming a hub is formed in the hub casting mold, and the casting mold cavity comprises a wheel core cavity in the middle, a rim cavity in the periphery and a spoke cavity communicating with the wheel core cavity and the rim cavity. The improved hub casting mold system is characterized in that a refrigerant pipe is arranged on the wall body, close to a middle area of the spoke cavity, of a mold cavity, and the refrigerant pipe is used for enabling molten metal in the spoke cavity located on the side edge of the refrigerant pipe to be locally solidified firstly to form a spoke knot; and a rod channel is further formed in the hub casting mold, the rod channel communicates with the casting mold cavity through a mold corner part on which the spoke cavity and the rim cavity intersect, a pressing rod is movably inserted into the rod channel in a penetrating mode, and the shape of the tail end face of the pressing rod is matched with a corner transition part between a rim and a spoke. Due to the fact that the corner transition part is located on the side edge of the spoke knot, the spoke knot can provide reverse supporting force for compaction feeding of the pressing rod, and feeding of the corner transition part is achieved under bidirectional pressure.

Description

technical field [0001] The invention relates to the field of wheel hub casting, in particular to a wheel hub casting mold system and a wheel hub casting processing method. Background technique [0002] At present, the low-pressure casting process has been widely used in the casting production of alloy wheels. The low-pressure casting mold generally includes a mold casting cavity. According to the shape of the hub-shaped casting, the casting cavity can be divided into the core cavity and the spoke from the inside to the outside. cavity and rim cavity. After the casting of the casting cavity is completed, the molten metal in the casting cavity is solidified sequentially in the order of the rim cavity, the spoke cavity and then the wheel core cavity. But generally speaking, the wall thickness of each part of the wheel hub casting is quite different. For example, the wall at the R corner of the casting where the spoke and the rim are connected is relatively thick, while the wal...

AI Technical Summary

Problems solved by technology

[0004] Although the use of the above-mentioned pressurization mechanism in the casting mold has improved the local shrinkage of the casting to a certain extent, but during the cooling and solidification process of the casting, the pouring system still needs to perform pressure-holding and feeding treatment on the casting in the entire casting cavity. Therefore, There is still room for further improvement in die casting molds and casting processes

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