The invention provides a railway wheel capable of suppressing crack extension. A railway wheel (100) according to the present disclosure includes a hub portion (10), a rim portion (20) including a tread (21) and a flange (22), and a plate portion (30). In a surface layer of a rim section (20) including a tread surface (21), the railway wheel (100) has an elastic limit [sigma] 0 of 430 MPa or more, an initial follow-up hardening coefficient C of 130 GPa or more, and a follow-up hardening coefficient reduction rate [gamma] of 400 or less. The initial follow-up hardening coefficient C and the follow-up hardening coefficient reduction rate gamma satisfy formula (1). # imgabs0 #
本发明提供能够抑制裂纹的伸展的铁道车轮。本公开的铁道车轮(100)包括轮毂部(10)、包含踏面(21)和凸缘(22)的轮辋部(20)、以及板部(30)。铁道车轮(100)在包含踏面(21)的轮辋部(20)表层中,弹性极限σ0为430MPa以上,初始随动硬化系数C为130GPa以上,随动硬化系数减少率γ为400以下。初始随动硬化系数C和随动硬化系数减少率γ满足式(1)。#imgabs0#
Railway wheel and axle for railway vehicle
铁道车轮及铁道车辆用轮轴
2024-12-17
Patent
Electronic Resource
Chinese
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge |