Metal mold low-pressure casting process for cast-aluminum gearbox body of high-speed train

Abstract

The invention provides a metal mold low-pressure casting process for a cast-aluminum gearbox body of a high-speed train. The process comprises the following steps of S1, three-dimensional modeling; S2, determining of casting process parameters; S3, drawing of a cast blank three-dimensional drawing and determining of a final casting process scheme; S4, design of the modeling of a casting mold; S5, manufacturing of a metal mold low-pressure mold and an inner-cavity resin sand hot box mold; S6, pressing of inner-cavity sand cores, maze sand cores, oil return groove sand cores and oil baffle sand cores of a resin sand gearbox; S7, preheating of the whole molds; S8, adding of smelted casting alloy material into a low-pressure casting machine maintaining furnace; S9, mounting of the inner-cavity sand cores, the maze sand cores, the oil return groove sand cores and the oil baffle sand cores manufactured in S6 on a low-pressure casting machine; S10, product pouring according to the casting process parameters obtained through S2; and S11, obtaining of a final product after T6 thermal treatment on a product obtained in S10. The casting cast through the process is compact in structure, clear in contour, smooth in inner and outer surface, stable in mechanical property and good in size stability and uniformity.

Description

technical field [0001] The invention relates to the technical field of cast aluminum gear box casting, in particular to a metal mold low-pressure casting process for a cast aluminum gear box body of a high-speed train. Background technique [0002] With the rapid development of the world economy and the deteriorating global energy and environmental problems, in the face of increasingly serious traffic congestion, high-speed trains are fast, large-capacity, low-energy consumption, low-emission, popular, safe, comfortable, and environmentally friendly travel transportation Tools are evolving at a rapid pace. China's high-speed rail has reached the world's advanced level in terms of high-speed train manufacturing, high-speed railway infrastructure construction, and high-speed railway operation management. However, as the core component of high-speed trains, gearboxes are highly dependent on imports, and international giants such as Germany and Japan are firmly occupying the Ch...

AI Technical Summary

Problems solved by technology

Cast aluminum gearboxes at home and abroad are all cast with sand cores. Due to the shortcomings of the sand core casting process itself, the improvement of the performance of cast aluminum gearboxes has been restricted.

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