Production of pc steel or steel stranded wire |
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| 申请号 | JP8848683 | 申请日 | 1983-05-19 | 公开(公告)号 | JPS59215233A | 公开(公告)日 | 1984-12-05 |
| 申请人 | Sumitomo Electric Ind Ltd; | 发明人 | IMAIDE MEIKAI; YAMAGUCHI YASUO; KAWADA TAKASHI; | ||||
| 摘要 | PURPOSE:To perform strain tempering at a low cost with a small sized installation by connecting two pairs of capstans having different diameters via hydraulic disc brakes to apply tensile strain on the wire and controlling tension and temp. between a weld zone and a non-weld zone. CONSTITUTION:A PC steel wire or steel stranded wire 1 to be treated is wound around capstans 2-1a, 2-1b from an arrow direction and is then passed through a heating coil 8 and a water cooling nozzle 9 until the wire is wound half around a turn roller 3. The wire is then wound around capstans 2-2a, 2-2b having a larger outside diameter and is coiled on a coiler. A disc brake 14 is actuated to grip disc 13 and to connect the capstans 2-1a, and 2-2a, 2-1b and 2- 2b in the stage of applying tension on the wire 1. Tensile strain (or tension) is generated continuously on the wire 1 between the capstans having different circumferential speeds. The wire is heated by the coil 8 and is cooled by the nozzle 9 under such strain, by which the wire 1 having a low relaxation characteristic is produced. | ||||||
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| 说明书全文 | |||||||
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