公开(公告)号：US20190233912A1

公开(公告)日：2019-08-01

申请号：US16317732

申请日：2017-06-08

申请人： Sumitomo Electric Industries, Ltd. ,  Sumitomo (SEI) Steel Wire Corp.

发明人： Fuminori Okada ,  Kenichi Shimizu ,  Takafumi Uwano

IPC分类号： C21D9/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/34

CPC分类号： C21D9/02 ,  B21C1/003 ,  B21C3/02 ,  B21F35/00 ,  C21D1/06 ,  C21D7/06 ,  C21D8/065 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/24 ,  C22C38/34

摘要： A steel wire for a spring is formed of a steel containing from 0.5% by mass to 0.8% by mass of carbon, from 1.0% by mass to 2.5% by mass of silicon, from 0.2% by mass to 1.0% by mass of manganese, and from 0.5% by mass to 2.5% by mass of chromium, the balance being iron and incidental impurities. The steel has a tempered martensite structure. The hardness of a surface region that is a region within 10 μm from an outer surface is from more than 0 HV to 50 HV higher than the hardness of a region other than the surface region.

公开(公告)号：US09849531B2

公开(公告)日：2017-12-26

申请号：US14764956

申请日：2014-09-02

申请人： Sumitomo Electric Industries, Ltd. ,  Sumitomo (SEI) Steel Wire Corp.

发明人： Kazuaki Sugimura ,  Hiromu Izumida ,  Kenichi Shimizu ,  Shinei Takamura ,  Katsutoshi Iwamoto

IPC分类号： B23H7/24 ,  B23H7/08 ,  C23C2/06 ,  C23C2/38 ,  B21C1/02 ,  C22C18/02 ,  B21C1/00

CPC分类号： B23H7/24 ,  B21C1/003 ,  B21C1/02 ,  B23H7/08 ,  C22C18/02 ,  C23C2/06 ,  C23C2/38

摘要： An object of the present invention is to improve machining speed by realizing both conductive properties and discharge performance with regard to an electrode wire for wire electric discharge machining, the electrode wire being obtained by plating a steel wire with a copper-zinc alloy. Another object is to suppress the occurrence of separation, cracking, and the like of plating in a wire-drawing step of an electrode wire. An electrode wire for wire electric discharge machining of the present invention includes a steel wire (11) serving as a core wire, and a plating layer (12) that covers the steel wire and that is composed of a copper-zinc alloy, in which an average zinc concentration of the plating layer is 60% to 75% by mass, a conductivity of the plating layer is 10% to 20% IACS, and a wire diameter is 30 to 200 μm.

公开(公告)号：US20150004052A1

公开(公告)日：2015-01-01

申请号：US14371163

申请日：2012-12-28

申请人： Sumitomo Electric Industries, Ltd. ,  Sumitomo (SEI) Steel Wire Corp.

发明人： Hiromu Izumida ,  Kenichi Shimizu ,  Shinei Takamura

IPC分类号： H01B1/02

CPC分类号： H01B1/026 ,  C22C1/06 ,  C22C9/00 ,  C22F1/00 ,  C22F1/08

摘要： A copper alloy having high strength and a high electrical conductivity in combination and a copper alloy wire are provided. A copper alloy contains 50 percent by mass or more and 95 percent by mass or less of Cu, 5 percent by mass or more and 50 percent by mass or less of Fe, and the remainder composed of deoxidizer elements and incidental impurities and has a texture exhibiting large diffraction peaks in the orientation of Cu and in the orientation of Fe when a cross-section is subjected to X-ray diffraction. The intensity ratio ICu( 111) of the diffraction peak in the orientation of Cu to the intensity of the whole diffraction lines of Cu is 0.70 or more and 1.0 or less and the intensity ratio IFe(110) of the diffraction peak in the orientation of Fe to the intensity of the whole diffraction lines of Fe is 0.90 or more and 1.0 or less. This copper alloy has a high electrical conductivity of 50% IACS or more in spite of high strength by controlling the orientation property in such a way that the above-described specific texture is established.

摘要翻译： 提供了具有高强度和高导电性的铜合金和铜合金线。 铜合金含有50质量％以上且95质量％以下的Cu，5质量％以上且50质量％以下的Fe，其余由脱氧剂元素和附带杂质构成，具有质地 当横截面进行X射线衍射时，在Cu的<111>取向和Fe的<110>取向中表现出大的衍射峰。 Cu的<111>取向的衍射峰的强度比ICu（111）与Cu的整个衍射线的强度的强度比ICu（111）为0.70以上且1.0以下，衍射峰的强度比IFe（110） Fe相对于Fe的全部衍射线的强度的<110>取向为0.90以上且1.0以下。 尽管通过以确定上述特定纹理的方式控制取向性能，尽管具有高强度，但该铜合金具有50％IACS以上的高电导率。