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Weld metal melting completely through base metal resulting in holes where
no metal remains.

Possible Causes

Corrective Actions

Excessive heat input

Select lower voltage range and reduce wire
feed speed

Increase and/or maintain steady travel speed

Page 24

5. TROUBLESHOOTING

5.6 Burn Through

Содержание FYMIG300

Страница 1: ...Instruction Manual Our equipment is approved by the following car manufacturers China FYMIG300...

Страница 2: ...onnection 3 10 Welding Gun 4 Operation 4 1 Controls 4 2 Holding and Positioning Welding Gun 4 3 Conditions that Affect Weld Bead Shape 4 4 Gun Movement during Welding 4 5 Poor Weld Bead Characteristic...

Страница 3: ...e Use only the right gauge of electrical wire cable There is a risk of fire or electrical shock if overload building wiring be sure power supply system is properly sized rated and protected to handle...

Страница 4: ...We have made installation and operation quick and easy Please operate the buttons and switches gently with your hands only one button each time The sensitive control circuit will be damaged if pressin...

Страница 5: ...ription Our semi automatic welder is an all in one MIG shielding gases welder GMAW with high efficiency that is an ideal substitute for manual arc welding Most advanced circuit design and technology a...

Страница 6: ...quency Hz Rated Input Current A Rated Output Current A Output Voltage V No load Voltage V Welding Wire Diameter mm Duty Cycle Insulation Class Dimensions mm Rated Input Power KW FYMIG300 50 60 15 300...

Страница 7: ...ain transformer and rectifier The unit products heat while welding 2 If unit overheats output stops and cooling fan runs 3 Wait fifteen minutes for unit to cool Reduce amperage or voltage or duty cycl...

Страница 8: ...d under sunshine The worksite should be in low humidity and without dust 5 Operating Temperature range 10 C to 40 C 6 Storage Temperature range 25 C to 56 C 7 At least 20cm of space for airflow 30cm o...

Страница 9: ...r of 6mm2 3 Do not move or operate unit where it could tip 4 Use cart or unit handle to move unit Do not pull the cords to move unit 5 Moving gas cylinder and main unit to hight sparaely Use lifting e...

Страница 10: ...Make sure the surface is vertical while installing 5 Flow Adjust Typical pressure is 0 05 0 15MPa 6 Hose 7 Hose Connection Connect gas hose between regulator flowmeter and the unit 8 Regulator Flowmet...

Страница 11: ...nductors Installation must meet all National and Local Codes Only qualified persons are allowed to make this installation Disconnect and lockout tagout input power before connecting input conductors f...

Страница 12: ...ire spool spindle tightly to prevent slipping Feed wire to check wire spool installation 2 Set a desired drive roll pressure close and tighten pressure adjustment knob 3 Press gun trigger and let go o...

Страница 13: ...ice springs open 2 Loosen securing nut Remove drive roll 3 The drive roll consists of two different sized grooves Reinstall the desired wire sized groove close to the motor shaft 4 Tighten securing nu...

Страница 14: ...lding gas Gun Work clamp and workpiece Weld current can damage electronic parts in vehicles Disconnect both battery cables before welding on a vehicle Place work clamp as close to the weld as possible...

Страница 15: ...1 Shield cup C012 2 Contact tip C004 3 Front adaptor C010 4 Gooseneck 15 24AK C020 C018 5 Trigger 6 Spanner 1 2 3 4 6 5 Page 12 3 INSTALLATION 3 10 Welding Gun...

Страница 16: ...usted displaying 5 When setting 2 step and 4 step the Spot time can not be adjusted displaying FFF 1 2 3 6 7 8 9 10 4 5 Setting welding data instruction 1 Data display screen 2 Data adjustment 3 Data...

Страница 17: ...w of work angle Side view of gun angle Side view of gun angle 45 45 90 90 0 15 0 15 GROOVE WELDS FILLET WELDS Welding wire is energized when gun trigger is pressed Before lowering helmet and pressing...

Страница 18: ...metal wire feed speed weld current and voltage Push Perpendicular Short Short Slow Normal Normal Normal Drag Long Long Fast 10 10 GUN ANGLES AND WELD BEAD PROFILES ELECTRODE EXTENSIONS STICKOUT FILLE...

Страница 19: ...Steady movement along seam 2 Weave Bead Side to side movement along seam 3 Weave Patterns Use weave patterns to cover a wide area in one pass of the electrode Page 16 4 OPERATION 4 4 Gun Movement duri...

Страница 20: ...1 Large Spatter Deposits 2 Rough Uneven Bead 3 Slight Crater during Welding 4 Bad Overlap 5 Poor Penetration Page 17 4 OPERATION 4 5 Poor Weld Bead Characteristics 1 2 3 4 5...

Страница 21: ...1 2 3 4 5 1 Fine Spatter 2 Uniform Bead 3 Moderate Crater during Welding 4 No Overlap 5 Good Penetration into Base Metal Page 18 4 OPERATION 4 6 Good Weld Bead Characteristics...

Страница 22: ...nge Electrode extension stickout too long Use shorter electrode extension stickout Workpiece dirty Remove all grease oil moisture rust paint under coating and dirt from surface before welding Insuffic...

Страница 23: ...t nozzle distance from workpiece 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 weld...

Страница 24: ...heat input Select lower voltage range and reduce wire feed speed Increase travel speed Weld metal melting through base metal and hanging underneath weld Excessive Penetration Good Penetration Page 21...

Страница 25: ...Improper weld technique Maintain normal gun angle of 0 to 15 degrees to achieve maximum penetration Keep arc on leading edge of weld puddle Do not extend wire too far from nozzle Insufficient heat inp...

Страница 26: ...Insufficient heat input 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...

Страница 27: ...etal resulting in holes where no metal remains Possible Causes Corrective Actions Excessive heat input Select lower voltage range and reduce wire feed speed Increase and or maintain steady travel spee...

Страница 28: ...joint formed by base metal Possible Causes Corrective Actions Welding wire extends too far out of nozzle Do not extend wire too far from nozzle Unsteady hand Support hand on solid surface or use two h...

Страница 29: ...xcessive heat input Use restraint clamp to hold base metal in position Make tack welds along joint before starting welding operation Select lower voltage range and or reduce wire feed speed Increase t...

Страница 30: ...feed speed 2 Replace contact tip Small cavities or holes resulting from gas pockets in weld metal 1 Insufficient shielding gas at welding arc 2 Regulator flowmeter damaged 3 Contact tip damaged 4 Leak...

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