ISO 17677-1:2019 pdf download – Resistance welding – Vocabulary
1 Scope
This document establishes a vocabulary of terms and . definitions for resistance spot welding, projection welding and seam welding. NOTE In addition to terms used in English and French, two of the three official ISO languages, this document gives the equivalent terms in German; these are published under the responsibility of the member body for Germany (DIN). However, only the terms and definitions given in the official languages can be considered as ISO terms and definitions.
3.1 Welding and testing procedures
3.1.1 chisel test test in which a chisel is driven between the sheets near to adja cent welds until either fracture occurs or until the metal near the weld yields or bends
3.1.2 cross tension test tensile test of a resistance welded specimen to determine the mechanical properties and failure mode of the weld
3.1.3 cross-wire welding projection welding (3.1.11) of crossed wires or rods
3.14 direct welding resistance welding secondary circuit variant in which wel- ding current and electrode force (3.3.5) are applied to the workpieces by directly opposed electrodes (3.2.1) and only one weld is made by one welding operation Note 1 to entry: See Eigure 13 for typical arrangements.
3.1.5 indirect welding resistance welding secondary circuit variant in which the wel- ding current flows through the workpieces in locations away from, as well as at, the welds Note 1 to entry: See FEigure 14 for typical arrangements.
3.1.6 multiple impulse welding welding with more than one impulse Note 1 to entry: See Figures4 to 8 for related time and electrode force (3.3.5) diagrams.
3.1.7 multiple spot welding spot welding in which two or more welds are made simulta- neously in one welding opera- tion
3.1.8 parallel spot welding resistance welding secondary circuit variant in which the secondary current is divided in parallel electrical paths to make two or more welds simul- taneously Note 1 to entry: See Eigure 12 a).
3.1.9 peel test destructive test in which a resistance-welded lap joint is tested by applying a peel force which results in stresses mainly in the thickness direction of the weld
3.1.10 pillow test destructive test in which in- ternal pressure is applied in order to test for leaks and the strength of a seam weld
3.1.11 projection welding resistance welding in which the resulting welds are localized at predetermined points by projec- tions, embossments or intersec- tions, concentrating force and current by their geometry Note 1 to entry: The projections are raised on, or formed from, one or more of the faying surfa- ces (3.3.16) and collapse during welding.
3.1.12 resistance spot welding resistance welding process producing a weld at the fay- ing surfaces (3.3.16) between overlapping parts by the heat obtained from resistance to the flow of welding current through the workpieces from the elec- trodes (3.2.1) serving to concen- trate the welding current and pressure at the weld area
3.1.13 seam welding resistance welding in which force is applied continuously and current is applied con- tinuously or intermittently to produce a linear weld, the workpieces being between two electrode wheels (3.2.5) or an electrode wheel and an electro- de bar
3.1.14 series spot welding resistance welding secondary circuit variant in which the secondary current is conducted through the workpieces and electrodes (3.2.1) in a series electrical path to simultaneous- ly form multiple resistance spot, seam or projection welds Note 1 to entry: See FEigures 1 and 12 b).