FIELD: electrical engineering. SUBSTANCE: aluminium alloy blank is coated with layer of contact nickel composed of nickel chlorine dissolved in acidic medium with addition of potassium fluoride, this procedure being followed by electric deposition of nickel at reversing current with anode pulse length of 0.1-0.3 s and anode- to-cathode pulse length ratio of 1:30 1:50 up to nickel layer thickness of 18-20 mcm. Copper plating is made at pulse current of 0.1-0.3 s length superposed on d.c. current until layer thickness of 12-15 mcm is attained. EFFECT: facilitated procedure. 1 tbl
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