公开(公告)号：US06733600B2

公开(公告)日：2004-05-11

申请号：US09907455

申请日：2001-07-18

申请人： Yuichi Heishi ,  Masahiro Suzuki ,  Ikuo Tani ,  Youichi Watanabe ,  Shunzou Umegaki ,  Kiyotaka Akimoto ,  Keiji Yokose

发明人： Yuichi Heishi ,  Masahiro Suzuki ,  Ikuo Tani ,  Youichi Watanabe ,  Shunzou Umegaki ,  Kiyotaka Akimoto ,  Keiji Yokose

IPC分类号： C23C826

CPC分类号： C23C8/26 ,  F16G5/16

摘要： A maraging steel is subjected to the aging to have a hardness of more than 500 Hv. A nitrided case is formed to have a depth that is about 20% to 50% to a ½ thickness of the maraging steel plate. An endless ring for a metal belt is constructed by the above maraging steel. According to methods of manufacturing the maraging steel and the endless ring, the nitrided case having the depth that is 20% to 50% of a distance from a plate surface to a center can be formed by executing an aging to have the hardness of more than 500 Hv, then executing a nitriding in the nitrogen atmosphere to which organic chloride is added.

摘要翻译： 马氏体时效钢经历老化以具有大于500Hv的硬度。 形成氮化壳体的深度为马氏体时效钢板的1/2厚度的约20％至50％。 金属带的环形环由上述马氏体时效钢构成。 根据马氏体结冰钢和环形环的制造方法，可以通过进行老化而形成具有比板表面至中心的距离的20〜50％的深度的氮化壳体，使其硬度大于 500Hv，然后在氮气气氛中进行氮化，向其中加入有机氯化物。