公开(公告)号：US06478897B1

公开(公告)日：2002-11-12

申请号：US09786466

申请日：2001-03-05

申请人： Hiromu Izumida ,  Nozomu Kawabe ,  Sadamu Matsumoto ,  Norihito Yamao ,  Teruyuki Murai

发明人： Hiromu Izumida ,  Nozomu Kawabe ,  Sadamu Matsumoto ,  Norihito Yamao ,  Teruyuki Murai

IPC分类号： C22C1905

CPC分类号： C22C19/056 ,  C22C19/055 ,  C22C19/057 ,  C22C19/058 ,  Y10S148/908

摘要： An Ni-based or Ni—Co-based heat-resistant alloy wire excellent in resistance to sag at high temperatures ranging from 600 to 700° C., which excellent resistance is most suitable for spring materials. The heat-resistant alloy wire contains (a) 0.01 to 0.40 wt % C, 5.0 to 25.0 wt % Cr, and 0.2 to 8.0 wt % Al; (b) at least one constituent selected from the group consisting of 1.0 to 18.0 wt % Mo, 0.5 to 15.0 wt % W, 0.5 to 5.0 wt % Nb, 1,0 to 10.0 wt % Ta, 0.1 to 5.0 wt % Ti and 0.001 to 0.05 wt % B; (c) at least one constituent selected from the group consisting of 3.0 to 20.0 wt % Fe and 1.0 to 30.0 wt % Co; and (d) the remaining constituent consisting mainly of Ni and unavoidable impurities. The wire has (a) a tensile strength not less than 1,400 N/mm2 and less than 1,800 N/mm2, (b) an average crystal-grain diameter not less than 5 &mgr;m and less than 50 &mgr;m in a cross section, and (c) a crystal-grain aspect ratio (a major-axis/minor-axis ratio) of 1.2 to 10 in a longitudinal section.

摘要翻译： 镍基或Ni-Co类耐热合金丝，耐高温耐600〜700℃的高温，优异的电阻最适合弹簧材料使用。 耐热合金丝包含（a）0.01〜0.40重量％的C，5.0〜25.0重量％的Cr和0.2〜8.0重量％的Al; （b）至少一种选自1.0至18.0重量％的Mo，0.5至15.0重量％的W，0.5至5.0重量％的Nb，10至10.0重量％的Ta，0.1至5.0重量％的Ti和 0.001〜0.05重量％B; （c）选自3.0〜20.0重量％Fe和1.0〜30.0重量％Co中的至少一种成分; 和（d）主要由Ni和不可避免的杂质组成的剩余成分。 电线具有（a）拉伸强度不小于1400N / mm2且小于1,800N / mm2，（b）横截面中平均晶粒直径不小于5μm且小于50μm，（b） c）纵向截面中晶粒长宽比（长轴/短轴比）为1.2至10。

公开(公告)号：US5904787A

公开(公告)日：1999-05-18

申请号：US668160

申请日：1996-06-21

申请人： Sadamu Matsumoto ,  Teruyuki Murai ,  Takashi Yoshioka

发明人： Sadamu Matsumoto ,  Teruyuki Murai ,  Takashi Yoshioka

IPC分类号： C21D6/00 ,  B21C37/04 ,  C21D1/18 ,  C21D9/02 ,  C21D9/52 ,  C22C38/00 ,  C22C38/18 ,  C22C38/28 ,  C22C38/34 ,  B21F21/00

CPC分类号： C22C38/18 ,  B21C37/04 ,  C21D9/02 ,  C21D9/525 ,  C22C38/34 ,  C21D1/18 ,  Y10T428/12

摘要： A high-toughness, quenched, oil-tempered wire for springs which is less likely to suffer a permanent set and is high in strength and toughness. The wire is made of a steel containing predetermined amounts of C, Si, Mn, Al and Ti, to which are selectively added predetermined amounts of V, Mo, W and Nb. After quenching and tempering, the content of retained austenite is 1-5 vol. %, and/or the number of carbides having a diameter of 0.05 .mu.m or more is 5 or less per .mu.m.sup.2 as viewed on a transmission electron microscope image.

摘要翻译： 用于弹簧的高韧性淬火油回火线，其不太可能遭受永久变形，强度和韧性高。 电线由含有预定量的C，Si，Mn，Al和Ti的钢制成，选择性地添加预定量的V，Mo，W和Nb。 淬火回火后，残余奥氏体含量为1-5vol。 ％，和/或直径为0.05μm以上的碳化物的数量在透射电子显微镜图像上为每平方米5个以下。

公开(公告)号：US5683521A

公开(公告)日：1997-11-04

申请号：US612175

申请日：1996-03-07

申请人： Sadamu Matsumoto ,  Teruyuki Murai

发明人： Sadamu Matsumoto ,  Teruyuki Murai

IPC分类号： F01L3/10 ,  B21F35/00 ,  C21D9/02 ,  C23C8/02 ,  C23C8/26 ,  C25F1/04 ,  F16F1/02 ,  C21D1/06

CPC分类号： C23C8/26 ,  C21D9/02 ,  C23C8/02 ,  Y10S148/908

摘要： A method for forming a spring which can reduce variations in the surface hardness and the thickness of the hardened layer when the spring is nitrided. Before nitriding the spring, the thickness of an oxide film formed on the surface of the spring is reduced to 1.5 .mu.m or less by electropolishing or any other suitable means so that the residual stress of the spring will be -5 kgf/mm.sup.2 to 5 kgf/mm.sup.2 near its surface. With this arrangement, it is possible to increase the surface hardness and the thickness of the nitrided layer of the spring obtained by nitriding.

摘要翻译： 一种用于形成弹簧的方法，其可以减少当弹簧被氮化时的硬化层的表面硬度和厚度的变化。 在对弹簧进行氮化之前，通过电抛光或任何其他合适的方式将形成在弹簧表面上的氧化膜的厚度减小到1.5μm或更小，使得弹簧的残余应力将为-5kgf / mm2至5 kgf / mm2。 通过这种布置，可以增加通过氮化获得的弹簧的表面硬度和氮化层的厚度。