BOC Smootharc TIG185 AC/DC Operating Manual Download Page 16 | Manualshive

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background image

Condition

Result

Undercut

Wide bead

profile

Porosity

Air

Air

Oxides

Oxides

Long arc length

Acute angle

Loss of gas

coverage

Angular

mis-alignment

Unsymmetrical bead

profile

Mis-alignment

Incomplete

penetration

Filler rod removed

from gas shield

Tungsten inclusions

Tungsten inclusions

Electrode contact

with the weld pool

Rod

movement

Oxides

Air

16

BOC Smootharc TIG 185 AC/DC Operating Manual

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Summary of Contents for Smootharc TIG185 AC/DC

Page 1: ...Smootharc TIG185 AC DC Operating Manual...

Page 2: ...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 information in this document is commercial in...

Page 3: ...6 Balanced squarewave 19 3 7 Copper and copper alloys 20 4 0 Package contents 21 5 0 Smootharc TIG 185 AC DC installation 22 5 1 Installation for TIG setup 22 5 2 Installation for TIG setup with optio...

Page 4: ...primary terminals and live parts effectively covered Never strike an arc on any gas cylinder Never use oxygen for venting containers Diagram and safety explanation Electrical safety alert Welding ele...

Page 5: ...ave enough ventilation in confined spaces 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 h...

Page 6: ...in transit Before operating a cylinder valve Ensure that the system you are connecting the cylinder into is suitable for the gas and pressure involved Ensure that any accessories such as hoses attach...

Page 7: ...anger the technician and operator and will void your warranty Only qualified personnel approved by BOC should perform repairs Always disconnect mains power before investigating equipment malfunctions...

Page 8: ...ernating current power sources with constant current output characteristics are normally employed to supply the welding current For DC operation the tungsten may be connected to either output terminal...

Page 9: ...de bead shallow penetration Nozzle Ions Electrons The DCEP reverse polarity are different from the DCEN in following ways High heat is produced on the electrode rather on the base metal The heat melts...

Page 10: ...ation Helium High speed automatic welding Deeper penetration Small concentrated HAZ Magnesium Alloys Argon Used with continuous high frequency AC Good arc stability Good cleaning action Stainless stee...

Page 11: ...erosion rate 2 Ceriated EW Ce2 75 Argon 25 Helium Low erosion rate Wide current range AC or DC No spitting Consistent arc starts Good stability Only thin sections Control penetration ACHF Zirconiated...

Page 12: ...ace This is the same as holding the torch 15 30 from the vertical Take special note that the rod is in the shielding gas during the welding process 2 8 Torch movement during welding Tungsten Without F...

Page 13: ...ted tungsten electrodes do not ball as readily as pure or zirconiated tungsten electrodes and as such are typically used for DCSP welding These electrodes maintain a ground tip shape much better than...

Page 14: ...15 75 Corner Joint 15 75 90 20 40 15 75 90 20 70 20 10 15 75 15 75 90 20 40 15 75 90 20 70 20 10 15 75 90 20 40 30 90 20 10 Lap Joint 90 20 40 30 20 10 15 75 90 20 40 30 15 75 90 20 70 20 10 15 75 15...

Page 15: ...40 1 5 3 50 50 15 40 20 6 15 r s 2 s 2 3 0 S 2 3 0 3 4 12 2 1 1 5 3 6 20 50 2 3 5 1 3 20 10 60 2 3 5 5 16 10 2 8 40 1 5 3 50 50 15 40 3 20 6 3 15 r s 2 s 2 3 0 S 2 3 0 3 4 12 2 1 1 5 3 6 20 50 2 3 5...

Page 16: ...angle Loss of gas coverage Angular mis alignment Unsymmetrical bead profile Mis alignment Incomplete penetration Filler rod removed from gas shield Tungsten inclusions Tungsten inclusions Electrode co...

Page 17: ...be used for TIG welding and pure argon is normally recommended as the shielding gas for steel Filler rods are usually selected to match the chemical composition and the mechanical properties of the pa...

Page 18: ...3 4 3 4 4 4 5 4 6 5 6 5 6 5 7 Current A 30 60 70 100 90 110 120 150 190 250 220 340 300 360 350 450 Consumable size mm 1 1 5 1 5 2 0 2 0 3 0 3 0 4 0 4 0 6 0 4 0 6 0 4 0 6 0 Polarity DC 3 4 Stainless s...

Page 19: ...ave and many electronic power sources allow the AC waveform to be adjusted and also provide facilities for pre and post gas flow and current slope in and slope out Aluminium welding parameters Plate T...

Page 20: ...argon is the shielding gas used for AC TIG welding TIG consumables are solid filler rods based on pure copper and several copper alloy compositions including aluminium bronzes silicon bronzes and cupr...

Page 21: ...de holder and cable Regulator Gas hose Operator s manual Foot control optional extra 21 BOC Smootharc TIG 185 AC DC Operating Manual GAS VRD Front Connections of TIG 185 AC DC Gas electricity system o...

Page 22: ...tput terminal 5 Connect the 5 pin plug of the TIG torch to the Torch foot contol socket and fasten the screw 5 2 Installation for TIG setup with optional foot control 1 Connect one end of the work ret...

Page 23: ...ckwise 2 Connect the electrode holder to the positive of the machine and fasten it clockwise tightly 3 Please note that for manual metal arc MMA welding the electrode holder can be switched to the neg...

Page 24: ...s the result that the amount of penetration is decreased 4 With the AC balance adjustment set at 20 higher currents can be used on thinner electrodes resulting in the use of smaller gas cups therefore...

Page 25: ...high frequency spark discharge in the welding machine will be audible and the shielding gas will flow 7 3 Operation for foot control TIG welding only 1 Ensure the foot pedal is correctly installed as...

Page 26: ...ungsten or oxides in weld Cause Solution Excessive current for tungsten size used Reduce the current or use larger electrode Accidental contact of electrode with puddle Maintain proper arc length Acci...

Page 27: ...quate shielding Cause Solution Gas flow blockage or leak in hoses or torch Locate and eliminate the blockage or leak Excessive travel speed exposes molten weld to atmospheric contamination Use slower...

Page 28: ...n planning maintenance frequency of your Smootharc welder Preventative maintenance will ensure trouble free welding and increase the life of the machine and its consumables 9 1 Power source Check elec...

Page 29: ...range 10 to 180A 10 to 135A Rated working voltage 17 2V 25 4V No load voltage 64V Duty cycle 35 180A 135A 100 106A 80A Arc initiation HF Remote control Yes for foot control connection Efficiency 80 Po...

Page 30: ...g costs Modification of the 15A primary input plug or fitment of a lower rated primary input plug will render the warranty null and void NOTE Under the terms of warranty welding torches and their cons...

Page 31: ......

Page 32: ...ect 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 10 Julius Avenue North Ry...

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