公开(公告)号：US07150800B2

公开(公告)日：2006-12-19

申请号：US10474990

申请日：2002-03-22

申请人： Katsuhide Nishio ,  Masahito Sakaki ,  Yoshiyuki Umakoshi ,  Kenji Hara ,  Kouki Tomimura

发明人： Katsuhide Nishio ,  Masahito Sakaki ,  Yoshiyuki Umakoshi ,  Kenji Hara ,  Kouki Tomimura

IPC分类号： C21D9/40

CPC分类号： B21B5/00 ,  B21B3/02 ,  B21B37/74 ,  B21B45/004

摘要： When a metastable austenitic stainless steel strip with a value Md(N), which is calculated from a composition, of 20–100 is ring-rolled to a steel belt, the relationship of −0.3913T+0.5650Md(N)+60.46ε≧65.87 is established among a material temperature T, an equivalent strain ε and the value Md(N). Due to the controlled rolling, a stainless steel belt for a continuously variable transmission is bestowed with fatigue properties similar or superior to those of a 18%-Ni maraging steel belt. The value Md(N) is defined by the equation of Md(N)=580−520C−2Si−16Mn−16Cr−23Ni−300N−10Mo, and the equivalent strain ε is defined by the equation of ε=√{square root over (4(1n(1−R))2/3)} (R: reduction). Furthermore, the steel belt is stabilized in its quality and profile by confining a variation ΔT of the material temperature T within a range of ±6.4° C.

摘要翻译： 当将由组合物计算得到的值为Md（N）的亚稳态奥氏体不锈钢带卷绕到钢带上时，-0.3913T + 0.5650Md（N）+60.46epsilon > = 65.87建立在材料温度T，等效应变ε和值Md（N）之间。 由于可控制的轧制，用于无级变速器的不锈钢带被赋予类似于或优于18％-Ni马氏体时效钢带的疲劳性能。 值Md（N）由Md（N）= 580-520C-2Si-16Mn-16Cr-23Ni-300N-10Mo的等式定义，等效应变ε由下式定义：ε= {平方根 （4（1-n）（1-R））2/3）}（R：还原）。 此外，通过将材料温度T的变化DeltaT限制在±6.4℃的范围内，钢带的质量和轮廓稳定。