1 Scope
This part of TB/T 2943 specifies the technical requirements, test methods and inspection rules, and marking and quality certificate of knuckle pivot pin and yoke key for rolling stock coupler.
This part is applicable to the forged steel knuckle pivot pin and yoke key not subject to heat treatment.
2 Normative References
The following standards contain provisions which, through reference in this part of TB/T 2943, constitute provisions of this part. For dated reference, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this part are encouraged to investigate the possibility of applying the latest editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 228 Metallic Materials-Tensile Testing at Ambient Temperature (GB/T 228-2002, eqv ISO 6892: 1998)
GB/T 230.1 Metallic Materials-Rockwell Hardness Test Part 1:Test Method (A, B, C, D, E, F, G, H, K, N, T Scale) (GB/T 230.1-2004, ISO 6508-1.1999, MOD)
GB/T 231.1 Metallic Materials - Brinell Hardness Test - Part 1: Test Method (GB/T 231.1-2002, eqv ISO 6506-1: 1999)
TB/T 2942-1999 Specification of Purchase and Acceptance of Steel Castings for Railway
3 Technical Requirements
3.1 Knuckle pivot pin and yoke key shall be manufactured by the steel produced by adopting electric arc furnace or alkaline pure oxygen top blown converter.
Foreword II
1 Scope
2 Normative References
3 Technical Requirements
4 Test Methods and Inspection Rules
5 Marking
6 Quality Certificate
