METHOD AND APPARATUS FOR SECURING TOGETHER STRIPPED METAL DEPOSIT SHEETS

摘要

The invention relates to a method and to an apparatus for securing together stripped metal deposit sheets (1) such as stripped metal deposit halves stripped from a mother plate of a permanent cathode used as an electrode in an electrolytic process such as metal electrowinning or metal electrorefining. The method is characterized by a step for receiving a stack (2) of stripped metal deposit sheets (1) in a welding station (3) that is provided with at least one friction stir spot welding tool (4a and 4b), and by a welding step for friction stir spot welding together at least two adjacent stripped metal deposit sheets (1) of the stack (2) of stripped metal deposit sheets (1) that is received in the welding station (3).