BS EN 14730-1:2006+A1:2010 Railway applications. Track. Aluminothermic welding of rails. Approval of welding processes
BS EN 14730-1 defines the laboratory tests and requirements for approval of an aluminothermic welding process using welds produced in workshop conditions.
It applies to the joining of new, Vignole rails as described in BS EN 13674-1 of the same profile and steel grade.
Compliance with the requirements of this standard does not of itself ensure the suitability of a welding process for specific conditions of track and traffic.
BS EN 14730-1 does not cover welds made between different rail sections, differently worn rails and different rail grades.
BS EN 14730-1:2006+A1:2010
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Information to be supplied by the railway authority
5 Approval procedure
6 Re-approval following process changes
7 Laboratory tests
Annex A (informative) Steps in approval
Annex B (informative) Suggested sequence of laboratory tests
Annex C (normative) Ultrasonic testing procedure for aluminothermic welds in rail
Annex D (normative) Procedure for FRY etching
Annex E (normative) Procedure for measurement of surface hardness
Annex F (normative) Procedure for slow bend test
Annex G (normative) Procedure for recording test weld fracture face defects
Annex H (normative) Ultrasonic inspection procedure on aluminothermic welds to be sectioned
Annex I (normative) Procedure for microscopic examination of the visible heat affected zone and fusion zone of welds
Annex J (normative) Procedure for measurement of the heat softened zone width
Annex K (normative) Fatigue test methods for aluminothermic welds
Annex L (informative) A–deviations
