公开(公告)号：US10760028B2

公开(公告)日：2020-09-01

申请号：US16078698

申请日：2017-01-24

申请人： Sumitomo (SEI) Steel Wire Corp.

发明人： Takafumi Uwano ,  Sadamu Matsumoto ,  Takayuki Shiwaku

IPC分类号： C10M107/44 ,  C23C8/14 ,  C21D9/02 ,  C23C8/80 ,  C21D9/52 ,  C10M107/28 ,  C10M107/34 ,  C10M107/38 ,  C23C26/00 ,  C10N40/32 ,  C10N50/08

摘要： An oil tempered wire includes a steel wire and a lubricant coating disposed around an outer circumference of the steel wire, wherein the lubricant coating includes a lubricant component resin and a binder resin, the lubricant component resin is at least one selected from polyacetals, polyimides, melamine resins, acrylic resins and fluororesins, the deposited mass of the lubricant coating is not less than 1.0 g/m2 and not more than 4.0 g/m2, and the surface roughness Rz of the steel wire is not more than 8.0 μm.

公开(公告)号：US11143257B2

公开(公告)日：2021-10-12

申请号：US16087259

申请日：2017-01-24

申请人： Sumitomo (SEI) Steel Wire Corp.

发明人： Takafumi Uwano ,  Taketoshi Sasaki ,  Takao Yamazaki

IPC分类号： F16F1/02 ,  C22C38/00 ,  C23C8/10 ,  B21C9/02 ,  C23C28/00 ,  C23C8/80 ,  C21D9/02 ,  C23C8/14 ,  C22C38/04 ,  C22C38/02 ,  C21D1/18

摘要： A steel wire for a spring includes a steel wire that has Ca or Na adhered thereto in an amount of 0.2 g/m2 or less. The steel wire has an oxide film on a surface thereof, and the oxide film has a thickness of, for example, from 2.0 μm to 20 μm.

公开(公告)号：US20190055490A1

公开(公告)日：2019-02-21

申请号：US16078698

申请日：2017-01-24

申请人： Sumitomo (SEI) Steel Wire Corp.

发明人： Takafumi Uwano ,  Sadamu Matsumoto ,  Takayuki Shiwaku

IPC分类号： C10M107/44 ,  C23C26/00 ,  C10M107/28 ,  C10M107/34 ,  C10M107/38

摘要： An oil tempered wire includes a steel wire and a lubricant coating disposed around an outer circumference of the steel wire, wherein the lubricant coating includes a lubricant component resin and a binder resin, the lubricant component resin is at least one selected from polyacetals, polyimides, melamine resins, acrylic resins and fluororesins, the deposited mass of the lubricant coating is not less than 1.0 g/m2 and not more than 4.0 g/m2, and the surface roughness Rz of the steel wire is not more than 8.0 μm.

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：US20190101176A1

公开(公告)日：2019-04-04

申请号：US16087259

申请日：2017-01-24

申请人： Sumitomo (SEI) Steel Wire Corp.

发明人： Takafumi Uwano ,  Taketoshi Sasaki ,  Takao Yamazaki

IPC分类号： F16F1/02 ,  C23C8/14 ,  C22C38/00

摘要： A steel wire for a spring has Ca or Na adhered thereto in an amount of 0.2 g/m2 or less.