Casting process for square shell of buffer of high-speed railway vehicle

Abstract

The invention provides a casting process for a square shell of the buffer of a high-speed railway vehicle. According to the process, a casting system, risers, chills, molding and core-making methods and each technological parameter are optimized, the principles of progressive solidification are followed, so internal compactness of a casting is improved, cracks are reduced, surface quality of a cast blank is improved, dimensional precision is better controlled, and a good effect is obtained. Detection is carried out according to American inspection standard ASTME-446, and five surfaces all reaches grade 1 to 2 in radiographic inspection.

Description

technical field [0001] The invention belongs to a metal casting method, in particular to a casting process method for a buffer square box of a high-speed railway vehicle. Using advanced, green and environmentally friendly materials, combined with leading casting techniques. technical background [0002] The buffer square box of the high-speed railway vehicle is a key part of the buffer. The piece is subject to enormous impact and friction over many years. Therefore, the internal quality requirements of castings are very high, and the internal density, pores, and slag inclusions are strictly controlled. Magnetic particle inspection is to be performed on all areas of the casting. [0003] The box body is a kind of box body of the friction buffer, its structure is relatively complicated, and the technical standard requirements are high. The production difficulty index is significantly higher than that of similar products. [0004] 1. Box structure: the box length is 321.3+...

AI Technical Summary

Problems solved by technology

[0008] Therefore, the quality and technical requirements of the buffer square box parts cannot be achieved by using all current casting methods

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