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Copper wire diameter from 1.14 to 3.55 mm is manufactured from own produced copper oxygen free wire rod on the coarse wire drawing line with combined annealing.
During the drawing process synthetic diamonds dies are used. They have greater resistance that provides stable wire size lengthwise.
Then wire runs through the annealing furnace where its heating by feeding to CD occurs corresponding to its diameter, and rapid cooling in the overheated steam. Use of electrothermic continuous annealing allows to receive stable specifications of wire lengthwise.
After furnace flexible wire pass through the dies and dry wire move to take-up.
When winding into containers used a "spade" layout method that eliminates wire tangling during unwinding in the further processing.
Wire is manufactured according to technical requirements TU U 27.4-13614181-003-2001, this requirements are in accordance to DIN 46431 «Runddrähte aus Kupfer für die Elertrotechnik».
Advantages of such manufacturing are:
When winding into containers used a "spade" layout method that eliminates wire tangling during unwinding in the further processing
The raw material for fine wire is own wire manufactured from oxygen free wire rod.The main operations:
The drawing of fine wire is carried out on the multiwire drawing line with combined annealing.
During the drawing process diamond dies are used: diameter more than 0.5 mm for synthetic diamonds and 0,5 mm and less for natural diamonds. As a result of great resistance the wire has size lengthwise.
Then the wire moved to the continuous annealing furnace, heated by DC in overheated steam and moved to 2 take-ups and coiled on metal coils with flange diameter 630 mm.
On every coil can be coiled from 6 to 16 wires diameter from 0.198 to 0.57 mm.