METHOD FOR FORMING RUSTPROOF FILM ON PC STRAND AND PC STRAND

摘要

16In a method of forming a rustproof film on a PC strand, the thickness of the resin film isset to 200 80 m, the pre-heating is performed within a temperature range from 60 to 150C to±m°5prevent an occurrence of a cob-webbing phenomenon as a result of melting of the synthetic resinpowder coating material and the post-heating is performed within a range from 150 to 250C in°order to uniformize the thickness of the coats adhered to the outer peripheral surfaces of the corewire and the surrounding wires, and the temperature of the pre-heating is set to be lower than thetemperature of the post-heating, and the synthetic resin powder coating material including10particles having diameters in a range from 0.1 to 250 m is used, and the line speed in the seriesmof steps is set to 5 to 10 m/min.Fig. 8