Craftsman 30084N Operation Manual - Page 28
Troubleshooting - Excessive Spatter, Troubleshooting - Porosity, Troubleshooting - Excessive
UPC - 055249070420
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6-8. Troubleshooting - Excessive Spatter Excessive Spatter - scattering of molten metal particles that cool to solid form near weld bead. Possible Causes Wire feed speed too high. Voltage too high. Electrode extension (stickout) too long. Workpiece dirty. Insufficient shielding gas at welding arc. Dirty welding wire. S-0636 Corrective Actions Select lower wire feed speed. Select lower voltage range. Use shorter electrode extension (stickout). Remove all grease, oil, moisture, rust, paint, undercoating, and dirt from work surface before welding. Increase flow of shielding gas at regulator/flowmeter and/or prevent drafts near welding arc. Use clean, dry welding wire. Eliminate pickup of oil or lubricant on welding wire from feeder or liner. 6-9. Troubleshooting - Porosity Porosity - small cavities or holes resulting from gas pockets in weld metal. S-0635 Possible Causes Corrective Actions Insufficient shielding gas at welding arc. Increase flow of shielding gas at regulator/flowmeter and/or prevent drafts near welding arc. Remove spatter from gun nozzle. Check gas hoses for leaks. Place nozzle 1/4 to 1/2 in (6-13 mm) 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 welding wire. Eliminate pick up of oil or lubricant on welding wire from feeder or liner. Workpiece 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 1/2 in (13 mm) beyond nozzle. 6-10. Troubleshooting - Excessive Penetration Excessive Penetration Good Penetration Excessive Penetration - weld metal melting through base metal and hanging underneath weld. Possible Causes Excessive heat input. OM-194 199 Page 25 Corrective Actions Select lower voltage range and reduce wire feed speed. Increase travel speed. S-0639