Insert-type hard alloy rolling mold for rim

Abstract

The invention provides an insert-type hard alloy rolling mold for rim. According to the insert-type hard alloy rolling mold, the hardness, wear resistance and smoothness of key parts of the mold are effectively improved, thus the product quality is improved, and the production cost is lowered. The rim comprises a middle groove bottom section, wherein a 5-degree inclined plane section is connectedto one side of the middle groove bottom section, a flat peak section is connected to the other side of the middle groove bottom section, the other 5-degree inclined plane section is connected to the flat peak section, and the two 5-degree inclined plane sections are correspondingly connected with wheel flange sections; and the insert-type hard alloy rolling mold comprises an upper roll, a lower roll, upper roll inserts and lower roll inserts, annular steps are correspondingly arranged on the two sides of the peripheral surfaces of the upper roll and the lower roll, the upper roll inserts and the lower roll inserts are both annular parts, the two upper roll inserts are correspondingly matched with the annular step on the peripheral surface of the upper roll, the two lower roll inserts are correspondingly matched with the annular step on the peripheral surface of the lower roll, and the upper roll inserts and the lower roll inserts are all made of hard alloy materials.

Description

technical field [0001] The invention relates to the field of manufacturing molds for wheel rims, in particular to an insert type hard alloy rolling mold for wheel rims. Background technique [0002] With the advancement of automobile lightweight, the overall weight of steel wheels continues to decrease, while performance requirements continue to increase and improve. In order to meet the requirements, the design of steel wheels needs to optimize the product structure and increase the strength level of the material. With the optimization of the product structure, the manufacturing process becomes complex and difficult; the strength level of the material is improved, and the traditional mold materials show varying degrees of inapplicability or unusability. Therefore, it is necessary to continuously explore and try out new processes and new technologies to meet product process requirements. [0003] Passenger car steel wheels are welded by spokes and rims, and rims are proces...

AI Technical Summary

Problems solved by technology

During the rolling process, the edge of the rim is equivalent to a high-speed rotating tool. The working condition is poor, and problems such as burrs, flashes, crushing and large differences in the shape of the rim are prone to occur.

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