1 Scope
This part of TB/T 2943 specifies the manufacturing technology requirements, test methods, inspection rules, marking, packaging, transportation and storage of anticreep top locklift assembly for No.13A type and No.13 couplers for railway freight car.
This part is applicable to the manufacture and inspection of anticreep top locklift assembly for No.13A type and No.13 couplers and its components.
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 229 Metallic Materials - Charpy Notch Impact Test (GB/T 229-1994, eqv ISO 148: 1983)
GB/T 231.1 Metallic Materials - Brinell Hardness Test - Part 1: Test Method (GB/T 231.1-2002, eqv ISO 6506-1: 1999)
GB/T 5117-1995 Carbon Steel Covered Electrodes
GB/T 5118-1995 "Low Alloy Steel Covered Electrodes"
GB/T 6414-1999 Castings--System of Dimensional Tolerances and Machining Allowances(eqv ISO 8062: 1994)
HG/T 2453-1993 Alkyd Varnish
TB/T 2942-1999 Specification of Purchase and Acceptance of Steel Castings for Railway
3 Technical Requirements
3.1 Basic requirements
3.1.1 The anticreep top locklift assembly consists of top lock lift, top lock pin, top lock pin lever, etc. Each component shall be manufactured according to the drawings which are approved according to this part and established procedures.
3.1.2 The casting dimensional tolerance unnoted in the product drawing shall meet the requirements of CT7 specified in GB/T 6414-1999.
3.2 Chemical components
3.2.1 The chemical compositions of the castings shall meet the requirements specified in Table 1.
Foreword II
1 Scope
2 Normative References
3 Technical Requirements
4 Test Methods and Test Rules
5 Marking
6 Quality Certificate
7 Storage and Transportation
