发明名称 |
HIGH CARBON STEEL WIRE, METHOD FOR PRODUCING THE SAME, AND HIGH STRENGTH PC STEEL TWISTED WIRE |
摘要 |
PROBLEM TO BE SOLVED: To allow a high carbon steel wire to wire drawing without damaging its toughness, and to obtain a PC steel twisted wire whose tensile strength is increased compared with the conventional one by twisting the steel wires obtained by the wire drawing. SOLUTION: A high carbon steel wire rod containing 0.8 to 1.30 wt.% C is subjected to patenting treatment, and is thereafter wire-drawn using a plurality of dies. The wire drawing is performed under the conditions where the total reduction of area is 70 to 90%, the reduction of area by each die is 10 to 30%, and a wire drawing rate is 20 to 500 m/min, and is also performed in such a manner that the surface temperature of the wire rod 8 is controlled to≤145°C till it reaches a wire drawing dram 5 in a wire drawing machine arranged per die from the outlet of the die 3, so as to produce the high carbon steel wire. COPYRIGHT: (C)2007,JPO&INPIT
|
申请公布号 |
JP2007029965(A) |
申请公布日期 |
2007.02.08 |
申请号 |
JP20050213789 |
申请日期 |
2005.07.25 |
申请人 |
SUMITOMO DENKO STEEL WIRE KK |
发明人 |
MAEKAWA TOMOYA;NIKI TOSHIHIKO;ICHIKI TAKASHI |
分类号 |
B21C1/00;B21C9/00;C21D8/06;C21D9/52;C22C38/00;C22C38/18 |
主分类号 |
B21C1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|