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WELDING FAULTS 

 

FAULT 

POSSIBLE CAUSE & REMEDY 

Weld deposit 'stringy' and incomplete

 

1.  Torch moved over work piece too quickly 
2.  Gas mixture incorrect 
 

Weld deposit too thick

 

1.  Torch moved over work piece too slowly 
2.  Welding voltage too low 
 

Arc unstable

excessive spatter

 and weld porosity

 

1.  Torch held too far from the workpiece 
2.  Rust, grease or paint on workpiece 
3.  Insufficient shielding gas: check gas contents gauge, 

regulator setting and operation of gas valve 

 

W

ire 

repeatedly 

burn

s back

 

1.  Torch held too close to the workpiece 
2.  Intermittent break in the welding circuit caused by: 

i     Contact tip loose - tighten 
ii    Contact tip damaged 

– replace 

iii   Welding wire or liner corroded 

– replace wire or liner 

3.  Wire feed slipping cause by: 

i     Restriction in liner (such as kinks) or contact tip 

– 

check and replace if necessary 

ii    Worn feed rolls 

– replace 

iii   Guide tube or pressure roll alignments incorrect 

 

Burning holes in the 

workpiece

 

1.  Torch moved too quickly or erratically 
2.  Welding volts too high 
3.  Wire feed speed too high 
 

Lack of penetration

 

1.  Torch moved too fast 
2.  Welding volts too low 
3.  Wire feed speed too low 
 

 

SPOT WELDING FAULTS 
 

FAULT

 

POSSIBLE CAUSE & REMEDY

 

Insufficient penetration 

1.  Spot weld time too short 
2.  Gap between metals to be joined too wide 
3.  Switch position too low 
4.  Welding settings too low 

 

Holes burnt through workpiece 

1.  Spot weld time too long 
2.  Gap between metals to be joined too wide 
3.  Weld is too close to the edge of the material 
4.  Welding settings too high 

 

Wire sticks to contact tip or workpiece at end of the 
weld 

1.  Burn off time incorrect 

– expert assistance required 

since burn back must be accurately timed 
 

Wire burns back 

1.  Poor gas coverage 
2.  Burn back time incorrect 

 

 
 

 

 

Содержание 260PS

Страница 1: ...1 OPERATING MANUAL FOR MIGOMAG SEPARATE WIRE FEEDER WELDING MACHINES 260PS ITEM AAM260PS 350PS ITEM AAM350PS 400PS ITEM AAM400PS...

Страница 2: ...IONS 3 SETTING UP FOR OPERATION 3 4 MACHINE CONTROLS 4 SHEILDING GAS 5 WORK ENVIRONMENT 5 OPERATION 5 SETTING UP GUN FOR WELDING ALUMINIUM 6 WELDING HINTS 7 WELDING FAULTS 8 SAFETY 8 9 SHEILDING GAS T...

Страница 3: ...knob using thumb and forefinger DON T OVER TIGHTEN 3 Fit The Reel Of Welding Wire Remove the red hand nut from hub Place the reel of wire on hub so that the wire will be drawn off from the bottom Ensu...

Страница 4: ...rse control and an 8 position switch for fine control a total of 24 Position 8 and 6 on the front panel MIGOMAG 400PF3 The welding voltage is regulated by a 6 position switch for course control and a...

Страница 5: ...roximately 10mm WARN BYSTANDERS TO SHIELD THEIR EYES Lower your helmet and press the welding gun trigger switch to initiate an arc As the weld is deposited push the torch from right to left direction...

Страница 6: ...tive than a V groove feed roller 3 Contact Tip Aluminium welding requires a contact tip with greater clearance than that used for steel Special clearance contact tips are available for welding alumini...

Страница 7: ...ner such as kinks or contact tip check and replace if necessary ii Worn feed rolls replace iii Guide tube or pressure roll alignments incorrect Burning holes in the workpiece 1 Torch moved too quickly...

Страница 8: ...8...

Страница 9: ...ylinder valve and check the cylinder pressure Must be greater than 10bar 150lb in2 Close cylinder valve Fit gas hose to regulator and open cylinder valve Set flow to 15 lt min Larger torch may need 20...

Страница 10: ...on CO2 Argon CO2 Oxygen Argon Argo Helium Argon CO2 Oxygen Argon Oxygen Argon Argon Helium Argon controls spatter Oxygen improves arc stability Stable arc sound welds Higher heat input suitable for he...

Страница 11: ...Main Transformer 40 86002070 Fuse Holder 30 x 6 13 86004005 Choke 42 P5110014 Dinse Socket 35 14 86004014 Transformer Auxilary 43 5010616 Housing For Central Adapter 16 86005001 Diode IR 43 47 8600300...

Страница 12: ...31 86002070 Fuse Holder 9 86001084 Handle Pipe 33 P5110014 Dinse Socket 35 10 86004044 Transformer Main 34 86001097 Gas Socket 11 86001031 Thermoswitch 110C for Main Transformer 35 86001098 Nut 3 8 12...

Страница 13: ...older 1AMP 20 x 5 10pkt 12 86001031 Thermoswitch 110C for Main Transformer 39 86002070 Fuse Holder 13 86004007 Choke 41 P5110014 Dinse Socket 35 14 86004013 Transformer Auxilary 42 5010616 Housing For...

Страница 14: ...roper use neglect or normal wear Travelling costs freight or postage charges are not covered by the warranty Warranty repairs must be carried out at the premises of Migomag Welding Supplies or its aut...

Страница 15: ...603 THE LARGEST INDEPENDENT WELDING EQUIPMENT SUPPLIER IN AUSTRALIA 668 Somerville Road Sunshine Victoria 3020 Phone 03 9313 3100 Fax 03 9312 4499 63 Douro Street North Geelong Victoria 3215 Phone 03...

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