C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
204/208, 26/112.
C25C 7/02 (2006.01) B23K 20/12 (2006.01)
Patent
CA 1339686
The invention relates to a method of forming a joint of high electrical conductivity between a metallic contact piece (17) and a metallic form part (12) comprising a groove (16) or a recess. In order that a firm joint with good electrical conductivity could be provided between the contact piece and the form part, the method according to the invention is mainly characterized in that the contact piece is a tubular body (17) attached to the form part (12) by friction welding, whereby the tubular body is rotated about its longitudinal axis while the form part is pressed against the outer surface of the tubular body so that the tubular body is welded to the groove (16) or recess of the form part due to the heat of friction. The invention is also concerned with a current conduction to be used in the electro-chemical purification of metals. The current conductor comprises a rodlike conducting body (12, 12') of an aluminium-based material of high electrical conductivity and comprising a groove (16) or recess, a contact piece (15, 15') of copper being welded to the rodlike conducting body.
602781
Marila Kyosti
Tiainen Tuomo
Bereskin & Parr
Teljan Muovi Ja Metalli Ky
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