Page 9DIN 6700-4:2020/4/7ICS 25.160.01; 45.060.01Welding of railway vehicles and components Part 4: Rules of execution (carry out) regulationsSoudage des vhicules ferroviaires et des pices Partie 4: Rgles dexcutioncontentsIntroduction11 Area of application22 Normative instructions23 concepts24 General rules of execution25 Material conditioned rules of execution56 Regulations for welding for maintenance of rail vehicles77 Tests prior to start of production, work tests7Appendix A (normative)Supplementary regulations for welding for maintenance of rail vehicles and parts 9IntroductionThis standard is developed by the standard committee rail vehicles (FSF).Welding is an important process for the manufacture of railvehicles and -parts. In this norm series the required regulation for the special process of welding are laid down. Basis of this regulations are the basic welding technological norms with consideration for the particular requirement on railvehicles.Part 1Basic conceptions and basic rulesPart 2Requirements for the qualification of the welding plant.Part 3Design requirementsPart 5Quality requirementsPart 6Material, filler metal, welding process, welding documents1 Area of applicationThis norm defines the rules of execution for welding of metallic materials for the manufacture and maintenance of rail vehicles and parts except pressure containers.2 Normative instructionsThis norm contains commitments through dated or undated instructions from other publications. These normative instructions are cited in the relative places in the text and the publications are quoted afterwards. With dated instructions later modification or reworking of this norm belong to it only of the y have been included through modification or reworking. With undated instructions the last edition of the relevant publication is valid.DIN 67001Welding of railway vehicles and components, Part 1: Basic terms, basic rulesDIN 67002Welding of railway vehicles and components, Part 2: Qualification of manufacturer of welded rolling stock materials Quality assurance DIN 67003Welding of railway vehicles and components, Part 3: Design rulesDIN 67004Welding of railway vehicles and components, Part 4: Rules of execution (execution regulations)DIN 67005Welding of railway vehicles and components, Part 5: Quality requirementsDIN 67006Welding of railway vehicles and components, Part 6: Qualification of manufacturer of welded rolling stock materials Materials, filler materials, welding processesDIN EN 2871Approval testing of welders Fusion welding Part 1: Steels (it contains changing A1:1997); German edition EN 287-1:1992+A1:1997.DIN EN 2872Approval testing of welders - Part 2: Aluminium and Aluminium alloys (it contains changing A1:1997); German edition EN 287-2:1992+A1:1997.DIN EN 2882Specification and approval of welding procedures for metallic materials Part 2: Welding procedure specification for arc welding (it contains changing A1:1997); German edition EN 288-2:1992+A1:1997.DIN EN 2888Specification and approval of welding procedures for metallic materialsPart 8: Approval by a pre-production welding testDIN EN 1418Welding personnel Approval testing of welding operators for fusion welding andresistance weld setters for fully mechanised and automatic welding of metallicmaterials; German edition EN 1418:1997.3 ConceptsFor the use of this standard the concepts quoted in DIN 6700-1 are valid.4 General rules of execution4.1 The welding seam preparation must be carried out according to the drawing or for other works documents. If for dynamic loaded parts the cut or the weld preparation is made by autogenous or plasma cutting, the surface quality must have quality I according to DIN EN ISO 9013.4.2 The surfaces of the welding area must be free of damp or dirt like rust, scale, slag, oil or paintbits. When welding in several positions the surface of the previous position has to be arranged in such a way, that the faultless welding of the next position (layer) is possible. Dirt, Slag, notches etc. must be removed.4.3 According to the type of filler metals the filler metal must undergo a re-drying process according to instructions by manufacturer prior to welding. Only suitable tested fillers must be used, see part 5.1 of DIN 6700-6. The instructions by manufacturer shall be considered for the preparation of the pWPS according to DIN EN 288-2.4.4 The welding joints must be visible and accessible to the welder, see part 4.2 for DIN 6700 - 3.4.5 The welders shall have valid test according to DIN EN 287 ff. for the welding process, the weld type, the material, the dimension (sheet thickness) and the welding position, in whose the welder should weld. Irregularities shall be notified to the welding coordinator before welding, e.g. improper and dirty weld prepa