BS EN IEC 60974-7:2019
$167.15
Arc welding equipment – Torches
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 38 |
This part of IEC 60974 specifies safety and construction requirements for TORCHES used for arc welding and allied processes. This document is applicable to MANUAL, MECHANICALLY GUIDED, AIR-COOLED, LIQUID-COOLED, MOTORIZED, SPOOL-ON and FUME EXTRACTION TORCHES. In this document, a TORCH consists of the TORCH BODY, the CABLE-HOSE ASSEMBLY and other components. This document is also applicable to a CABLE-HOSE ASSEMBLY connected between a power source and ancillary equipment. This document is not applicable to electrode holders for manual metal arc welding or air-arc cutting/gouging. NOTE 1 Typical allied processes are electric arc cutting and arc spraying. NOTE 2 Other components are listed in Table A.1. NOTE 3 In this document, all procedures and requirements are the same for “TORCHES” and “GUNS”. For convenience, the term “TORCH” is used in the following text.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 5 | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications |
| 6 | Annex ZZ (informative)Relationship between this European standard and the safety objectives of Directive 2014/35/EU [2014 OJ L96] aimed to be covered |
| 7 | English CONTENTS |
| 9 | FOREWORD |
| 11 | 1 Scope 2 Normative references 3 Terms and definitions |
| 14 | 4 Environmental conditions |
| 15 | 5 Classification 5.1 General 5.2 Process 5.3 Guidance 5.4 Cooling 5.5 Main arc striking for plasma processes 6 Test conditions 6.1 General |
| 16 | 6.2 Type tests 6.3 Routine tests 7 Protection against electric shock 7.1 Voltage rating |
| 17 | 7.2 Insulation resistance Tables Table 1 – Voltage rating of torches |
| 18 | 7.3 Dielectric strength 7.3.1 General requirement 7.3.2 Additional requirements for plasma cutting torches 7.4 Protection against electric shock in normal service (direct contact) 7.4.1 Degree of protection requirements 7.4.2 Additional requirements for plasma cutting torches |
| 19 | 7.5 Requirements for arc striking and stabilizing voltage rating 7.5.1 General requirement 7.5.2 Arc striking and stabilizing voltage test |
| 20 | 8 Thermal rating 8.1 General 8.2 Temperature rise 8.3 Heating test 8.3.1 General |
| 21 | 8.3.2 Metal inert/active gas (MIG/MAG) or self-shielded flux-cored arc welding torch Table 2 – Test values for metal inert gas arc welding (MIG) of aluminium alloys |
| 22 | Table 3 – Test values for metal active gas arc welding (MAG) of mild steel Table 4 – Test values for metal active gas arc welding (MAG) with flux-cored wire |
| 23 | 8.3.3 Tungsten inert gas (TIG) and plasma arc welding torch Table 5 – Test values for self-shielded flux-cored arc welding of mild steel Table 6 – Test values for tungsten inert gas arc welding (TIG) |
| 24 | 8.3.4 Plasma cutting torch 8.3.5 Submerged arc welding torch Table 7 – Test values for plasma arc welding |
| 25 | 9 Pressure of the liquid cooling system 10 Resistance to hot objects Figures Figure 1 – Device for testing the resistance to hot objects |
| 26 | 11 Mechanical provisions 11.1 Impact resistance Figure 2 – Device for the impact test |
| 27 | 11.2 Accessible parts 11.3 Handle material 12 Marking 13 Instructions for use |
| 29 | Annex A (informative)Additional terminology Table A.1 – List of terms |
| 30 | Figure A.1 – Torch for metal inert/active gas (MIG/MAG) or self-shielded flux-cored arc welding Figure A.2 – Gun for metal inert/active gas (MIG/MAG) or self-shielded flux-cored arc welding Figure A.3 – Torch for tungsten inert gasarc welding Figure A.4 – Torch for plasma arc welding |
| 31 | Figure A.5 – Torch for plasma cutting Figure A.6 – Supply unit Figure A.7 – Mechanically guided plasma torch |
| 32 | Annex B (normative)Position of the welding torches for the heating test Figure B.1 – MIG/MAG torches Figure B.2 – TIG torches Figure B.3 – Plasma welding torches |
| 33 | Annex C (informative)Cooled copper block Figure C.1 – Water-cooled copper block – Example |
| 34 | Annex D (informative)Copper block with a hole Figure D.1 – Water-cooled copper block with a hole – Example |
| 35 | Annex E (informative)Copper bars with a slot Figure E.1 – Water-cooled copper bars with a slot – Example |
| 36 | Bibliography |
