公开(公告)号：US4090813A

公开(公告)日：1978-05-23

申请号：US685696

申请日：1976-05-11

申请人： Akira Minato ,  Tutomu Shimizu ,  Yosio Kanekiyo

发明人： Akira Minato ,  Tutomu Shimizu ,  Yosio Kanekiyo

IPC分类号： F04D29/00 ,  B21D53/78 ,  B23K9/00 ,  C22C38/00 ,  F01D5/28 ,  F04D29/02 ,  F04D29/28

CPC分类号： F01D5/28

摘要： A martensitic stainless steel to be used for the impellers of turbo-blowers, compressors and the like consisting essentially, based on weight of 0.04 - 0.15% C, up to 2.0% Si, 0.2 - 2.0% Mn, 3.5 - 6.0% Ni, 10 - 16% Cr, and at least one element selected from the group consisting of 0.5 - 3.0% Mo, 0.01 - 0.8% Nb, and the balance being Fe. The amounts of .delta.-ferrite therein is not more than 10%. The steel may further contain up to 0.2% additional element or elements, i.e., N, Al, Ti, Ca, and/or a rare-earth element or elements. The steel of this composition offers high strength, great toughness, and good weldability and, when annealed after welding, it will display the same properties as after quenching and tempering. Impellers made of this steel are for heavy-duty, high-efficiency applications.

摘要翻译： 用于涡轮鼓风机，压缩机等的叶轮的马氏体不锈钢基本上由0.04-0.15％C，至多2.0％的Si，0.2-2.0％的Mn，3.5-6.0％的Ni， 10-16％Cr，以及选自0.5-3.0％Mo，0.01-0.8％Nb中的至少一种元素，余量为Fe。 其中δ-铁素体的量不超过10％。 钢还可以含有高达0.2％的附加元素，即N，Al，Ti，Ca和/或稀土元素。 该组合物的钢具有高强度，高韧性和良好的焊接性，并且在焊接后进行退火时，其显示出与淬火回火相同的性能。 由这种钢制造的叶轮是用于重型，高效率的应用。