Corrosion resistant steel cords and pneumatic tires reinforced with same
    3.
    发明授权
    Corrosion resistant steel cords and pneumatic tires reinforced with same 失效
    耐腐蚀钢丝绳和充气轮胎加强

    公开(公告)号:US6102095A

    公开(公告)日:2000-08-15

    申请号:US952500

    申请日:1997-11-24

    摘要: A corrosion resistant steel cord for reinforcing rubber articles, particularly a belt and/or carcass of a pneumatic tire, has a residual compressive stress inside the twisting helix of each steel filament such that a ratio R.sub.1 /R.sub.0 is less than one, where R.sub.0 is the radius of curvature of a helix in each helically formed steel filament obtained by untwisting of the cord and R.sub.1 is the radius of curvature of the helix after removal of a surface layer from the inside of the helix in the steel filament. The steel filaments have a tensile strength of 4,000-4,800 N/mm.sup.2. The cord does not have a wrapping wire around its outer peripheral surface and has either a single twisted construction obtained by twisting 3 to 6 steel filaments in an open structure having a space between adjacent filaments or a two-layer twisted construction obtained by surrounding a core of n=1-4 steel filaments with a sheath of n+(2-6) steel filaments in a rubber penetration structure having a space between adjacent filaments of the sheath or a three-layer twisted construction obtained by surrounding a core of a single steel filament with a first sheath of m=3-6 steel filaments and a second sheath of m+(2-6) steel filaments in a rubber penetration structure having a space between adjacent filaments of each sheath.

    摘要翻译: PCT No.PCT / JP97 / 01338 Sec。 371日期:1997年11月24日 102(e)1997年11月24日PCT PCT 1997年4月18日PCT公布。 WO97 / 39176 PCT公开号 日期1997年10月23日用于增强橡胶制品,特别是充气轮胎的带和/或胎体的耐腐蚀钢丝帘线在每根钢丝的扭转螺旋内部具有残留的压缩应力,使得R1 / R0的比率小于 一个,其中R0是通过帘线退火获得的每个螺旋形钢丝中螺旋的曲率半径,R1是从钢丝中的螺旋内部去除表面层之后的螺旋的曲率半径 。 钢丝的拉伸强度为4,000-4,800N / mm2。 帘线在其外周表面周围不具有缠绕线,并且具有通过在相邻长丝之间具有空间的开放结构中扭转3至6根钢丝而获得的单一捻合结构,或通过围绕芯部获得的两层扭曲结构 在具有在护套的相邻长丝之间具有空间的橡胶穿透结构中具有n +(2-6)钢丝鞘的n = 1-4个钢丝,或者通过围绕单个钢的芯部获得的三层扭曲结构 具有m = 3-6根钢丝的第一护套的长丝和在每个护套的相邻长丝之间具有空间的橡胶穿透结构中的m +(2-6)钢丝的第二护套。