Parweld XTM404S, Руководство оператора

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11
Problem Cause/Corrective Action
Incomplete fusion to base metal 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.
Excessive Spatter - scattering of
Molten metal particles that cool
to solid form near weld bead.
Wire feed speed too high.
Select lower wire feed speed.
Voltage too high. Select
lower voltage range.
Electrode extension (stick out)
too long. Use shorter electrode
extension (sick out).
Work piece dirty. Remove
all grease, oil, moisture,
rust, paint, undercoating,
and dirt from work surface
before welding.
Insufficient shielding gas at
welding arc. Increase flow of
shielding gas at regulator/flow
meter and/or prevent drafts
near welding arc.
Dirty welding wire. Use
clean, dry welding wire.
Eliminate pickup of oil or
lubricant on welding wire from
feeder or liner.
Wire feed unit operates but no
gas flow .
Gas cylinder empty
Gas regulator closed
Faulty solenoid
Restriction in torch cables
Wire feed unit operates, but
does not feed
Insufficient drive roll pressure
Incorrect drive rolls
Excessive wire
spool brake tension
Problem Cause/Corrective Action
Wire feed unit operates, but
does not feed
Incorrect liner
Blocked liner
Bird nesting
Burn back
Bird nesting Excessive feed roll pressure
Incorrect or blocked liner
Incorrect contact tip size
Contact tip overheating
Restriction in torch cable
Misaligned drive
rolls or wire guides
Excessive cable kinkage
Burn back Improper voltage setting
Improper stick out
Erratic wire feed
Incorrect or blocked liner
Contact tip overheating
Excessive cable kinking
Adjust the burn back
control correctly
Erratic Wire Feeding or Arc Improper drive roll tension
Improper drive roll size
Worn drive rolls
Incorrect or blocked liner
Incorrect wire guide size
Misaligned drive
rolls or wire guide
Gaps at liner or wire
guide junctions
Incorrect contact tip size
Contact Tip overheating
Spatter adhesion on exit
geometry of tip bore
Excessive cable kinkage
Poor earth or
cable connections
Weld joint area dirty
Yellow temperature light
illuminates
Power source has over heated
leave the machine running
to allow it to cool down.
Ensure entry and exit vents
on machine are clear and
machine has a good supply of
cooling air.
Reduce operating duty cycle
and or amperage.
8.0 Accessories
8.1 Drive Rolls
Wire 0.8/1.0 1.0/1.2 1.2/1.6
Mild steel DR4V0810 DR4V1012 DR4V1216
Stainless Steel DR4V0810 DR4V1012 DR4V1216
Aluminum DR4U0810 DR4U1012 DR4U1216
Flux cored DR4K0810 DR4K1012 DR4K1216