BS 5892-7:2014

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Product definition
5 Technical approval
6 Parameters for the technical approval process
7 Assessment of the geometric parameters
8 Assessment of the thermomechanical behaviour
   (tread braked wheels only)
9 Assessment of the mechanical behaviour
10 Assessment of the acoustic behaviour
11 Technical approval documents
12 Qualification
Annexes
Annex A (normative) - Product qualification
Annex B (normative) - Product delivery
Annex C (informative) - Example of a test method
        for the determination of fatigue characteristics
Annex D (informative) - Strain gauge method for determining
        the variation of circumferential residual stresses
        located deep under the tread (destructive method)
Annex E (informative) - Parameters for drag brake
        assessment
Annex F (normative) - Assessment of the thermomechanical
        behaviour
Annex G (normative) - Assessment of the mechanical
        behaviour
Bibliography

Defines the characteristics of, and technical Approval requirements for, cast railway wheels for conventional rail operation.

This British Standard specifies the characteristics of, and technical approval requirements for, cast railway wheels for conventional rail operation. It can be applied in conjunction with BS or BS EN standards for axles and wheelsets. This standard is not applicable to urban rail. Three steel grades, C48, C56 and C64, are defined in this standard. NOTE1 For the purpose of this British Standard, the steels referred to as C48, C56 and C64 are based on those defined as AAR Class L, A and B respectively. This British Standard is applicable to cast wheels which are rim-chilled and have their wheel webs shot peened. NOTE2 \'Rim-chilled\' is a heat treatment of the rim, the aim of which is to harden the rim and to create compressive residual stresses in the rim. NOTE3 Cast wheels are shot peened to improve the web fatigue strength. The wheels defined in this British Standard are for applications up to 120km/h (i.e. 75mph). It only applies to wheels of new design or new application. These requirements are intended to be used to assess the validity of the design choice for the proposed use and constitute the technical approval procedure. This British Standard does not cover assessment of the hub nor of the static mechanical dimensioning of the wheel.