Daihen MWP-18, Instruction Manual

Page 1: ...examinations for welding experts consultant engineers After thoroughly reading this manual first store it with the warranty in the place where the persons concerned can read at any time Read it again...

Page 2: ...te a dangerous situation that could cause serious injury or death to personnel CAUTION Mishandling may create a dangerous situation that could cause medium or slight injury to personnel or material da...

Page 3: ...be done by personnel who have knowledge and technical skill to be able to understand the contents of this manual well and to handle the torch safely 7 This welding torch must not be used for purposes...

Page 4: ...d gases generated by welding WARNING Ventilate the area sufficiently and wear a welder s shield mask if necessary Fumes and gases generated by welding have a harmful effect on human body Welding in a...

Page 5: ...of leather apron in order to prevent burns caused by touching heated workpiece spatters slag and arc sparks right after welding 3 WATCH for fire 4 Have a fire extinguisher nearby Operators should know...

Page 6: ...ion for Welding and Cutting of Containers That Have Held Hazardous Substances American Welding Society Standard AWS F4 1 from American Welding Society National Electrical Code NFPA Standard 70 from Na...

Page 7: ...because the welding torch might become damaged 3 3 Replacement of Parts CAUTION To prevent burns observe the following Do not directly touch the high temperature parts of a nozzle an electrode and so...

Page 8: ...ications are described in Table 1 Table 1 Specifications See Figure 1 Type MWP 18 Welding method TIG welding DC positive electrode 300A Max applicable current AC 260A Rated duty cycle 100 Electrode in...

Page 9: ...h Gas Hose 38 24 5 21 5 5 255 260 173 5 178 5 25 5 42 47 125 5 11 17 17 2 24 3 8 24 UNF 3 8 24 UNF 7 16 20 UNF 7 8 14 UNF 9 16 18 UNF 5 8 18 UNF Coolant Hose Condensing Hose Power Cable Works as both...

Page 10: ...d as tungsten electrode Table 3 Selection of Electrode Welding method power source Materials of electrode Materials of wokpiece DC TIG welding Ceriated tungsten 2 cerium contained Thoriated tungsten 2...

Page 11: ...liter min 151 200 4 5 6 7 8 6 8 liter min 7 8 7 10 liter min 201 300 5 6 7 8 8 9 liter min 8 10 12 8 15 liter min Table 6 The Relationship between Nozzle No and Inside Diameter Nozzle No 4 5 6 7 8 10...

Page 12: ...cording to the shape of the welded and the location to be welded As soon as the length to be stuck out is decided tighten the head of a lea collet body and mount a set screw Fig 2 CAUTION Make sure to...

Page 13: ...3 kg cm2 Lower than 25 C is desirable for the temperature at the inlet 6 5 Although a cable hose a gas hose and a coolant hose are all protected by hose sheaths DO NOT put anything heavy on top let th...

Page 14: ...rgon gas has not flowed No arc generated 5 A high frequency has not been generated 1 The length of an arc is too short Electrode damaged 2 The flow rate of an argon gas is not enough 1 The welding cur...

Page 15: ...ptional 15 H21B12 Collet body 3 2 1 Optional 16 H561C05 Lea collet 3 2 1 17 H561C02 Lea collet 1 0 1 Optional 18 H561C03 Lea collet 1 6 1 Optional 19 H561C04 Lea collet 2 4 1 Optional 20 0870 032 Ceri...

Page 16: ...trode 1 1 6 150mm ground optional 44 0831 024 Thoriated tungsten electrode 1 2 4 150mm ground optional 45 0831 032 Thoriated tungsten electrode 1 3 2 150mm ground optional 46 0831 010 Pure tungsten el...

Page 17: ...10 Fig 3 MW P 18 TIG W elding Torch Parts Layout...

Page 18: ...Instruction Manual of welding torch No 1 K2874 E 1 First edition first printed on 21 January 1999...

Page 19: ...1 1 937 937 937 937 454 454 454 454 9660 9660 9660 9660 Facs Facs Facs Facs 81 81 81 81 6 6 6 6 6317 6317 6317 6317 2583 2583 2583 2583 Facs Facs Facs Facs 1 1 1 1 937 937 937 937 454 454 454 454 9661...