Axle material and application thereof in high-speed railway carriage

Abstract

The invention relates to an axle material, which obtains a strength-toughness matching and An alloy steel axle material with excellent fatigue performance, which is preferably used in the manufacture of railway passenger car axles, especially high-speed railway passenger car axles with a speed of more than 200Km per hour, and can serve in alpine regions.

Description

technical field [0001] The invention relates to the field of materials, in particular to an axle material for railway passenger cars, and further, an alloy steel axle material for high-speed railway passenger cars with a speed of more than 200km per hour. Background technique [0002] The operation safety of high-speed railway is a major basic engineering project involving the national economy and people's livelihood, and the axle is one of the key running components of high-speed trains. The quality of its comprehensive performance largely determines the long-term safety and service life of trains. The fatigue life of the axle is directly related to the material, manufacture, heat treatment and design method of the axle, especially the fatigue damage problem of the press-fit part of the axle has not been effectively solved. Axles for high-speed railway trains are usually produced internationally using two materials and process technologies. One technical idea is to use medi...

AI Technical Summary

Problems solved by technology

The fatigue life of the axle is directly related to the material, manufacture, heat treatment and design method of the axle, especially the fatigue damage of the press-fit part of the axle has not been effectively solved

The yield strength of this axle steel is 420MPa, the tensile strength is 730MPa, and the fatigue limit is 249MPa. These properties can no longer meet the requirements of the growing high-speed railway passenger car for axle steel materials.

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