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180 P

O P E R AT I N G M A N U A L

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Summary of Contents for 180P

Page 1: ...180P O P E R AT I N G M A N U A L...

Page 2: ...omission which may become apparent after the document has been issued Neither BOC nor any of its agents has independently verified the accuracy of the information contained in this document The infor...

Page 3: ...elding MCAW 8 2 4 Fundamentals of MIG FCAW and MCAW 12 3 0 General Welding Information 14 3 1 Recommended Welding Parameters 14 4 0 Correct ApplicationTechniques 15 5 0 Troubleshooting and Fault Findi...

Page 4: ...es Be alert to this at all times Keep your head out of the fumes rising from the arc Fumes from the welding of some metals could have an adverse effect on your health Don t breathe them in If you are...

Page 5: ...ian and operator and will void your warranty Only qualified personnel approved by BOC should perform repairs Always disconnect mains power before investigating equipment malfunctions Parts that are br...

Page 6: ...l of manual welding The process is also suitable for mechanised set ups and its use in this respect is increasing MIG welding can be carried out using solid wire flux cored or a copper coated solid wi...

Page 7: ...ed to as gas shielded Using an auxiliary gas shield enables the wire designer to concentrate on the performance characteristics process tolerance positional capabilities and mechanical properties of t...

Page 8: ...ves less scope to address performance arc stabilisation and process tolerance so these tend to suffer when compared with gas shielded types Wire efficiencies are also lower at about 65 in this mode of...

Page 9: ...tes the shielding gas evenly around a shroud which then allows the gas to flow over the weld area The position of the contact tip relative to the gas shroud may be adjusted to limit the minimum electr...

Page 10: ...with these types of wire GlobularTransfer Metal transfer is controlled by slow ejection resulting in large irregularly shaped globs falling into the weld pool under the action of gravity Carbon dioxid...

Page 11: ...o the weld In spray transfer as the current density increases an arc is formed at the end of the filler wire producing a stream of small metal droplets In solid wire MIG this transfer mode occurs at h...

Page 12: ...roperties or level of residual hydrogen in the weldmetal Solid MIG wires are all considered to be of the low Hydrogen type consumables The following table gives a general overview of the selection of...

Page 13: ...al rule all solid and metal cored wires are welded on electrode positive Work return lead fitted to the negative connector Some grades of self shielded flux cored wires i e E71T 11 E71T GS etc needs t...

Page 14: ...14 16 16 17 16 18 16 18 23 25 Wire feed speed m min 3 5 5 0 4 0 7 0 4 0 7 0 4 0 7 0 7 5 9 0 Gas rate flow L min 15 15 15 15 15 Travel speed mm min 350 500 350 500 320 500 280 450 800 1000 Stainshield...

Page 15: ...rcement Flux cored welding with cored wires takes place normally with the drag technique when there is slag in your drag The welding gun is tilted at an angle of 10 away from the direction of welding...

Page 16: ...the melt off rate of the wire that will have an influence on the weldbead profile Short Normal Long Normal Long Short Normal Long Influence of the change in electrical stickout length on the weldbead...

Page 17: ...deformation Incorrect feed roll size incorrect tension adjustment misalignment Inlet outlet guides Wire shaving or snarling Incorrect wire guide sizes misalignment Universal adaptor Wire restriction...

Page 18: ...workpiece No nozzle insulator fitted Regulator flowmeter Component Fault symptom Cause Inlet stem No gas flow gas leaks at regulator body or cylinder valve Blocked inlet stem leaking inlet stem to bo...

Page 19: ...tput voltage adjustment V 14 26 Duty Cycle 60 Power Factor 0 73 Efficiency 80 Type of wirefeeder machine Compact Wire speed m min 2 15 Post flow s 1 Maximum spool size mm 200 Wire diameter mm 0 6 0 8...

Page 20: ...that the wire feed speed is not excessive Adjust the pressure adjusting knob to ensure 4 that the wire is fed evenly Over tightening the adjusting knob will cause undue strain on the wire feed motor S...

Page 21: ...achine and its consumables 8 1 Power Source Check electrical connections of unit at least twice a year Clean oxidised connections and tighten Inner parts of machine should be cleaned with a vacuum cle...

Page 22: ...o daily allowances or accommodation and travelling costs Note Under the terms of warranty welding guns and their consumables feed drive rollers and feeder guide tubes are not covered Direct or indirec...

Page 23: ...inder Never use oxygen for venting containers 10 0Recommended Safety Guidelines Diagram and safety explanation Electrical safety alert Welding electrode causing electric shock Fumes and gases coming f...

Page 24: ...believed to be correct at the time of printing Whilst proper care has been taken in the preparation no liability for injury or damage resulting from its improper use can be accepted BOC Limited 970 98...

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