Lincoln Electric C2.410 manual Electric Shock can kill

Page 40

ELECTRIC SHOCK can kill.

1.a. The electrode and work (or ground) circuits are electrically “hot” when the welder is on. Do not touch these “hot” parts with your bare skin or wet clothing. Wear dry, hole-free gloves to insulate hands.

1.b. Insulate yourself from work and ground using dry insula- tion. Make certain the insulation is large enough to cover your

full area of physical contact with work and ground.

In addition to the normal safety precautions, if welding must be per- formed under electrically hazardous conditions (in damp locations or while wearing wet clothing; on metal structures such as floors, gratings or scaffolds; when in cramped positions such as sitting, kneeling or lying, if there is a high risk of unavoidable or accidental contact with the workpiece or ground) use the following equipment:

•Semiautomatic DC Constant Voltage (Wire) Welder.

•DC Manual (Stick) Welder.

•AC Welder with Reduced Voltage Control.

1.c. In semiautomatic or automatic wire welding, the electrode, electrode reel, welding head, nozzle or semiautomatic welding gun are also electrically “hot”.

1.d. Always be sure the work cable makes a good electrical connection with the metal being welded. The connection should be as close as possible to the area being welded.

1.e. Ground the work or metal to be welded to a good electrical (earth) ground.

1.f. Maintain the electrode holder, work clamp, welding cable and welding machine in good, safe operating condition. Replace damaged insulation.

1.g. Never dip the electrode in water for cooling.

1.h. Never simultaneously touch electrically “hot” parts of electrode holders con- nected to two welders because voltage between the two can be the total of the open circuit voltage of both welders.

1.i. When working above floor level, use a safety belt to protect yourself from a fall should you get a shock.

1.j. Also see Items 4.c. and 6.

ARC RAYS can burn.

2.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding. Headshield and filter lens should conform to ANSI Z87. I standards.

2.b. Use suitable clothing made from durable flame-resistant material to protect your skin and that of your helpers from the arc rays.

2.c. Protect other nearby personnel with suitable non-flammable screening and/or warn them not to watch the arc nor expose themselves to the arc rays or to hot spatter or metal.

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Contents Stick Electrode Welding Guide Page Table of Contents Welding Procedures Out-Of-Position Welding Vertical and OverheadVertical Up Techniques for Fillet and Groove Welds Vertical Up Groove Welds Vertical Down Welds160 Polarity Vertical Up Fillet WeldsWeld High-Deposition Welding Jetweld LH-3800 E7028H8Wrong End view Side view Corner Welds Groove Welds First Pass Groove WeldsJetweld 2 E6027 Amps. AC at 14/Min Deep Groove Welds Joint a Pass E6011T Over E6011 Root PassesFlat Fillet Welds Plate Size T 14 ga 12 ga 10 ga No. of Passes Leg Size LFt. of Weld/Hr Lbs. of Elec./Ft. 049 082 117 162 WeldHorizontal Fillet Welds Welding Inclined Plate Polarity Arc Speed In./Min.3 Lbs. of Elec./Ft. Downhill Angle deg180 High Speed Welding Sheet Metal AlternatePage Edge Welds Fillet Welds Lap WeldsDiameter Position Current Amps 110 155 PolarityCurrent Amps 120 170 Polarity 018 028Burnthrough Spot Welds Roof Decking to Beam Roof Beam Flange Roof Deck Thickness 22 ga 20 ga 18 ga 16 gaLow Hydrogen Welding E7018-1Multipass Page Overhead Groove Welds Diameter Current Amps 155 PolarityOverhead Fillet Welds Also see Out-of Position Procedures, No. of Pass Leg Size LArc Speed In./Min Ft. of Weld/Hr Lbs. of Elec./Ft. No. of Passes Leg Size LHorizontal Groove Welds Back gouge first bead as needed Plate Size T No. of PassesDiameter Current Amps 230 200 Polarity Arc Speed In./Min Ft. of Weld/Hr Lbs. of Elec./Ft. of WeldUse steel backing as on 230 200 PolarityWith E7028 Electrode 275 350 With E7018 Electrode132 195 272 409 727 260 335 157 236 320203 335 Ft. of Weld/Hr.2 Lbs. of Elec./Ft.785 Minimum Preheat and Interpass Temperature1 Stick Electrode Typical Operating Procedures Out-of-Position GroupHigh Deposition Group High Speed GroupLow Hydrogen Group Low Hydrogen, Low Alloy Steel GroupFleetweld Jetweld Fleetweld 5P Shield-Arc Fleetweld 5P+Fleetweld Fleetweld 35LS Jetweld Shield-Arc 70+ Shield-Arc HYP+Electric Shock can kill Fumes and Gases can be dangerous For Electrically powered Electric and Magnetic Fields Stick C2.410 12/04
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