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10

CO

ntr

O

lS

problem

Cause/Corrective action

Porosity - small cavities or holes
Resulting from gas pockets in 

weld metal.

Inadequate shielding gas 

coverage. Check for proper 

gas flow rate.

Remove spatter from gun 

nozzle.
Check gas hoses for leaks. 
Eliminate drafts near welding 

arc.
Place nozzle 6-13 mm from 

work piece Hold gun near bead 

at end of weld until molten 

metal solidifies.

Wrong gas. Use welding 

grade shielding gas; change to 

different gas.

Dirty welding wire. Use clean, 

dry welding wire. Eliminate 

pickup of oil or lubricant on 

welding wire from feeder or 

liner.

Work piece dirty. Remove all 

grease, oil, moisture, rust, 

paint, coatings, and dirt from 

work surface before welding. 

Use a more highly deoxidizing 

welding wire (contact supplier).

Welding wire extends too far 

out of nozzle.
Be sure welding wire extends 

not more than 13 mm beyond 

nozzle.

problem

Cause/Corrective action

Incomplete fusion to base metal

Work piece dirty. Remove all 

grease, oil, moisture, rust, 

paint, coatings, and dirt from 

work surface before welding.

Insufficient heat input. Select 

higher voltage range and/or 

adjust wire feed speed.

Improper welding technique. 

Place stringer bead in proper 

locations) at joint during 

welding.
Adjust work angle or widen 

groove to access bottom 

during welding.
Momentarily hold arc on 

groove side walls when using 

weaving technique.
Keep arc on leading edge of 

weld puddle. Use correct gun 

angle of 0 to 15 degrees.

Excessive Penetration – weld 

metal melting through base 

metal and hanging underneath 

weld.

Excessive heat input. Select 

lower voltage range and 

reduce wire feed speed.
Increase travel speed.

Lack Of Penetration - shallow
Fusion between weld metal and
Base metal.

Improper joint preparation. 

Material too thick. Joint 

preparation and design must 

provide access to bottom of 

groove while maintaining
Proper welding wire extension 

and arc characteristics.

Improper weld technique. 

Maintain normal gun angle of 

0 to 15 degrees to achieve 

maximum penetration. Keep 

arc on leading edge of weld 

puddle. Ensure welding wire 

extends not more than 13 mm 

beyond nozzle.

Insufficient heat input. Select 

higher wire feed speed and/or 

select higher voltage range.
Reduce travel speed.

Burn-Through - weld metal 

melting
Completely through base metal
Resulting in holes where no 

metal remains.

Excessive heat input. Select 

lower voltage range and 

reduce wire feed speed.
Increase and/or maintain 

steady travel speed.

Содержание XTM303C

Страница 1: ...Operator Manual ISSUE 3 XTM303C...

Страница 2: ...er maintanance this equipment should provide years of reliable service All our systems conform to ISO9001 2000 and are independently audited by NQA The entire product range carries the CE mark and is...

Страница 3: ...ing drive roll sets 7 5 6 Welding wire installation 7 5 7 Torch installation 8 5 8 Work return lead connection 9 5 9 Shielding gas connection 9 6 0 Operation 9 6 1 Feeding wire electrode 9 6 2 Optimis...

Страница 4: ...manual Wear a safety harness if working above floor level Keep all panels and covers securely in place Clamp work cable with good metal to metal contact to work piece or worktable as near the weld as...

Страница 5: ...or before going near arc welding gouging or spot welding operations NOISE can damage hearing Noise from some processes or equipment can damage hearing Wear approved ear protection if noise level is hi...

Страница 6: ...does not go off when the power source has cooled down then have the machine checked by a qualified engineer 6 On Off switch The machine is switched off when the light 4 is off and the fan is not runn...

Страница 7: ...is suitably rated for the power draw of the machine and the environmental location Have a qualified electrician connect the input plug For long runs over 30m larger copper wires should be used The gre...

Страница 8: ...ource inch facility or torch trigger to feed the electrode wire 50mm from the end of the liner conduit 5 Once the electrode wire has stopped refit the tip adaptor diffuser contact tip and gas nozzle 6...

Страница 9: ...e head and body protection 1 Position wire over joint The end of the wire may be lightly touching the work 2 Lower welding helmet operate gun trigger and begin welding Hold the gun so the contact tip...

Страница 10: ...feed speed Improper welding technique Place stringer bead in proper locations at joint during welding Adjust work angle or widen groove to access bottom during welding Momentarily hold arc on groove...

Страница 11: ...perates but does not feed Insufficient drive roll pressure Incorrect drive rolls Excessive wire spool brake tension Incorrect liner Blocked liner Bird nesting Burn back Bird nesting Excessive feed rol...

Страница 12: ...ch spares 12 XP8 300A Air Cooled Mig Welding Torch Rating 300A 8 7kW Mixed Gas 80 20 80 Duty Cycle EN60974 7 0309 0459 0 0 8mm to 1 2mm wires B A 2 1 4 3 6 5 7 8 9 10 11 12 13 14 15 17 16 18 19 21 21...

Страница 13: ...9 0459 1 0mm 1 2mm x 10ft 3m XP2024 12 40 Steel Liner 0409 0459 1 0mm 1 2mm x 13ft 4mt XP2024 12 50 Steel Liner 0409 0459 1 0mm 1 2mm x 16ft 5m NI XP2024PC 12 30Polyamide Copper Liner 0309 0459 0 8mm...

Страница 14: ...0 Bar E700113 1 Gauge Argon 30 lpm flow E700123 2 Gauge Argon 30 lpm flow Flow Meters Features Designed from brass bar whilst the tube and cover are moulded from high quality polycarbonate to ensure...

Страница 15: ...www parweld com 15...

Страница 16: ...M303C The above listed products are certified to be compliant with the rohs directive with all homogeneous component parts being controlled to ensure material contents as per the list below Cadmium 0...

Страница 17: ...ts or parts of the product determined by Parweld to be defective Parweld makes no other warranty express or implied This warranty is exclusive and in lieu of all others including but not limited to an...

Страница 18: ...Parweld Limited Bewdley Business Park Long Bank Bewdley Worcestershire England DY12 2TZ tel 44 1299 266800 fax 44 1299 266900 www parweld com info parweld co uk...

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