Fytech FYMIG300 Instruction Manual Download Page 18 | Manualshive

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Weld bead shape depends on gun angle ,direction of travel, electrode extension
(stickout), travel speed, thickness of base 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)

FILLET WELD ELECTRODE EXTENSIONS (STICKOUT)

GUN TRAVEL SPEED

Page 15

4

.

OPERATION

4.3 Conditions that Affect Weld Bead Shape

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Summary of Contents for FYMIG300

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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