Formation of linear welds between sheet metal components comprises resistance heating by passing current through both components parallel to join between their edges

摘要

Formation of linear welds between sheet metal components comprises resistance heating by passing a current (13) through both components (9, 10) parallel to the join (12) between their edges. An independent claim is included for apparatus for carrying out the method comprising insulating clamps which hold the sheets together and terminals (7, 8) positioned on the join between them.