BS EN 60974-7:2013
$167.15
Arc welding equipment – Torches
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 34 |
This part of IEC 60974 specifies safety and construction requirements for torches for arc welding and allied processes. This part of IEC 60974 is applicable to manual, mechanically guided, air-cooled, liquid-cooled, motorized, spool-on and fume extraction torches.
In this part of IEC 60974, a torch consists of the torch body, the cable-hose assembly and other components.
This part of IEC 60974 is also applicable to a cable-hose assembly connected between a power source and ancillary equipment.
This part of IEC 60974 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 part of IEC 60974, the terms “torch” and “gun” are interchangeable. For convenience “torch” has been used in the following text.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | English CONTENTS |
| 8 | 1 Scope 2 Normative references 3 Terms and definitions |
| 11 | 4 Environmental conditions 5 Classification 5.1 General 5.2 Process 5.3 Guidance 5.4 Cooling |
| 12 | 5.5 Main arc striking for plasma processes 6 Test conditions 6.1 General 6.2 Type tests 6.3 Routine tests 7 Protection against electric shock 7.1 Voltage rating |
| 13 | 7.2 Insulation resistance Tables Table 1 – Voltage rating of torches |
| 14 | 7.3 Dielectric strength 7.3.1 General requirement 7.3.2 Additional requirements for plasma cutting torches 7.3.3 Additional requirements for striking and stabilizing voltage rating |
| 15 | 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 8 Thermal rating 8.1 General 8.2 Temperature rise |
| 16 | 8.3 Heating test 8.3.1 General 8.3.2 Metal inert/active gas (MIG/MAG) or self-shielded flux-cored arc welding torch |
| 17 | Table 2 – Test values for metal inert gas arc welding (MIG) of aluminium alloys Table 3 – Test values for metal active gas arc welding (MAG) of mild steel |
| 18 | 8.3.3 Tungsten inert gas (TIG) and plasma arc welding torch Table 4 – Test values for metal active gas arc welding (MAG) with flux-cored wire Table 5 – Test values for self-shielded flux-cored arc welding of mild steel |
| 19 | 8.3.4 Plasma cutting torch Table 6 – Test values for tungsten inert gas arc welding (TIG) Table 7 – Test values for plasma arc welding |
| 20 | 8.3.5 Submerged arc welding torch 9 Pressure of the liquid cooling system 10 Resistance to hot objects |
| 21 | 11 Mechanical provisions 11.1 Impact resistance Figures Figure 1 – Device for testing the resistance to hot objects |
| 22 | 11.2 Accessible parts 11.3 Handle material 12 Marking Figure 2 – Device for the impact test |
| 23 | 13 Instructions for use |
| 24 | Annex A (informative) Additional terminology Table A.1 – List of terms |
| 25 | Figure A.2 – Gun for metal inert/active gas (MIG/MAG) or self-shielded flux-cored arc welding Figure A.1 – Torch for metal inert/active gas (MIG/MAG) or self-shielded flux-cored arc welding Figure A.4 – Torch for plasma arc welding Figure A.3 – Torch for tungsten inert gasarc welding Figure A.6 – Supply unit Figure A.5 – Torch for plasma cutting |
| 26 | Figure A.7 – Mechanically guided plasma torch |
| 27 | Annex B (normative) Position of the welding torches for the heating test Figure B.3 – Plasma welding torches Figure B.2 – TIG torches Figure B.1 – MIG/MAG torches |
| 28 | Annex C (informative) Cooled copper block Figure C.1 – Water-cooled copper block – Example |
| 29 | Annex D (informative) Copper block with a hole Figure D.1 – Water-cooled copper block with a hole – Example |
| 30 | Annex E (informative) Copper bars with a slot Figure E.1 – Water-cooled copper bars with a slot – Example |
| 31 | Bibliography |
