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MISCELLANEOUS INFORMATION

ROOT PASS The first welding pass in a groove. RUTILE ELECTRODES Coated electrodes containing ilmenite, TiO2, in the coating.

SECONDARY CABLE

The cable which carries current from the secondary side of a welding machine to the workpiece and electrode holder.

S Power source for use in spaces with increased electrical danger (e.g. boilers) must be identified by the «S» (for «Safety») mark.

SPATTER Small pieces of metal which have been ejected from molten pool and attached to base material outside the weld.

SPOT WELD Controlled weld cycle to procedure sheet metal weld with spesific characteristics. Belongs to the group «Resistance Welding».

STAINLESS STEEL

Common term for two main groups: chrome alloy (ferritic) and chrome-nickel alloy (austenitic) steel. Austenitic steel is non-magnetic.

STRINGER BEAD

Weld bead made without oscillation, side-to-side motion.

SURFACING Applying material to the surface of another material for protection from chemipals, heat, wear, rust etc. TACK WELD Weld made to hold parts of weldment in alignment until final weld is made.

TENSILE STRENGTH

Indicates the breaking strength of a material, expressed in N/mm2.

TENSILE TEST A destructive test where a weld is pulled apart. This test determines how much tension a weld can withstand before the weld gives.

THERMIC SPRAYING

A method of bulling up a workpiece by spraying on finely powdered metal alloys. Can also be used for spraying zinc and plastic powders for surface protection.

TIG WELDING

Tungsten inert gas welding.

THERMOCROME Temperature indicating crayons. Used to control CRAYONS temperature levels.

TUNGSTEN An electrode of pure tungsten or tungsten alloyed with

ELECTRODE

rare earths, lanthanum, cerium, torium or zirconium. High melting point – 3410 °C. Used for TIG welding. Tungsten is also known as Wolfram.

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