The cold drawing wire prestressed concrete slab with circle hole is widely usedas a structure member.
Compared to cold drawing process, the cold rolling for high precision bars has certain distinct advantages: better surface finish obtained. superior dimension control and higher metal yield.
Effects of cold drawing and water quench process on mechanical properties of prestressed wires have been studied in laboratory.
During preparing silve sheathed tape, rolling after cold drawing without annealing, adopting large draught perpass were both benefit improving Jc.
The cold drawing and water quench process which enable the mechanical properties of wires reaching specified demand of present standards are determined.
This paper states the basic principle of operation of cold drawing and straightening machine. It derives basic formula to determine the major size and parameters.
P There shall be no welds in wires and bars. Individual wires of strands may contain staggered welds made only before cold drawing.
