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Preliminary Instructions and Holding the Arc
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alignment alloy angle annealing applied arc welding bending boiler bolt burned butt joint butt weld carbon cast iron cast-iron welding caulking cause cementite chapter chipping clamped coated cooling copper crack crater cross-section cutting deposited metal desired Diagram double-bevel ductility edges elastic limit electric arc electric welding electric-arc electrode entire Fillet Welding filling finished flux gas welding graphite heart bead heat hole joining joint lap welding layer machine melting merged method of welding molten metal necessary nickel non-rigid overhead welding oxide padding parent metal patch possible practice precaution preheating produce proper puddle resistance welding rigid riveting rolled plate seams shaft shape sheet shown side slag spot spot welding spreading steel strains studs successive surface tack welding tank temperature tensile strength test pieces thickness thin tightness tion tubes type of electrode type of weld usually vertical voltage warping welding operation