Low-pressure casting segmented mold and method for casing aluminum alloy pattern ring through low-pressure casting segmented mold

Abstract

The invention discloses a low-pressure casting active mold. The low-pressure casting active mold includes a lower cover plate, a casting mold arranged on the lower cover plate, a gypsum core and a mold core arranged in the casting mold. The casting mold The upper end of the mold is provided with an upper cover plate, the upper cover plate is provided with a soup pressure pipe, which communicates with the gypsum core, the lower cover plate is provided with a melting furnace, and the lower cover plate and melting furnace are provided with a support plate and the base plate nested in the groove of the support plate, the base plate is provided with a liquid riser, the upper end of the liquid riser communicates with the lower end of the gypsum core, and the lower end of the liquid riser extends into the melting furnace In the inner cavity, the support plate is provided with a compressed air port. The invention also provides a method for producing an aluminum alloy pattern ring by utilizing the low-pressure casting movable mold, the process steps of which are assembling the low-pressure casting movable mold, preheating, filling, maintaining pressure, and cooling, and the process of feeding the produced casting Consistency with the cooling rate is achieved, and accurate shrinkage parameters can be obtained.

Description

technical field [0001] The invention relates to the technical field of tire mold aluminum tread circle manufacturing, in particular to a low-pressure casting movable mold and a method for casting an aluminum alloy tread circle by using the mold. Background technique [0002] As a leader in the tire industry, radial tires are widely valued by people for their characteristics of wear resistance, high speed, comfort and fuel economy. Radial tires are the standard to measure the technical modernization level of a country's automobile tire industry, and have become the development direction of the automobile tire industry in today's world. As a special mold for tire vulcanization, the radial tire joint mold is made of 35# cast steel forging, aluminum-silicon alloy, aluminum-magnesium alloy, etc. In recent years, with the continuous improvement of the technological level, more and more aluminum-magnesium alloy casting pattern blocks have been used. AC7A aluminum-magnesium alloy i...

AI Technical Summary

Problems solved by technology

Japan's brand is AC7A, Guan Guo's 514.2 and Germany's ALMg5. The domestic ZL302 is close to it in terms of chemical composition and mechanical properties. : Imported aluminum alloy, poor casting performance, difficult process, unstable product quality

[0010] This hybrid casting belongs to the upgraded technology of gravity casting. Although the quality of castings has been greatly improved to a certain extent, there are still gravity technology components after all, and it has not fundamentally solved the problems of subcutaneous pores and compactness of castings. Poor fatigue strength during vulcanization

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