Abstract
The round circular wires are mainly net-shaped into various profiled wires by rolling or drawing, to be further worked for electronic parts, springs, piston rings and rails. These processes require a large number of mill stands, roll passes or dies. Authors have developed a new type of compact continuous mill named the satellite mill. In this satellite mill rolling, longitudinal compressive stress significantly decreases the elongation and promotes transverse metal flow. This elongation-constrained effect of the satellite mill was confirmed in the previous study for rolling of flat and T-shaped profiled wires using open passes. In this study, the satellite mill with closed passes is applied to production of U-shaped and H-shaped profiled wires. The obtained rolling characteristics and hardness are compared with those by a conventional rolling method. It is shown that the satellite-mill rolling is able to form much higher ribs in products than a conventional rolling method and has advantage in the ability to fill the metal into the roll grooves. The elongation-constrained effect is more enhanced in using closed passes than open passes. This type of mill is considered to be suitable for production of profiled wires with complex cross sections.
