公开(公告)号：DE602004029357D1

公开(公告)日：2010-11-11

申请号：DE602004029357

申请日：2004-05-12

Applicant: SUMITOMO METAL IND

Inventor： ANRAKU TOSHIRO ,  IGARASHI MASAAKI ,  YAMAKAWA TOMIO ,  SHIMODA KAZUHIRO ,  HIDAKA YASUYOSHI

IPC: C22C38/00 ,  B21B25/00

公开(公告)号：CA2701059A1

公开(公告)日：2009-05-07

申请号：CA2701059

申请日：2008-10-20

Applicant: SUMITOMO METAL IND

Inventor： HIDAKA YASUYOSHI ,  SHIMODA KAZUHIRO ,  NAKAIKE KOUJI ,  HIRASE NAOYA ,  HIGASHIDA YASUTO ,  INAGE TAKATERU ,  NAGAKITA JYUN ,  NAKAMORI MASAHARU ,  YOSHIKAWA FUMIHITO ,  HAYASHI YOSHIHIKO ,  AISAKA TAKAYUKI

IPC: B21B25/04 ,  B21B25/06 ,  C23C4/02 ,  C23C4/06 ,  C23C4/10

Abstract: Since a coating film composed of an oxide such as Fe3O4 or FeO and Fe (metal) is formed on the surface of a base material by electric arc spraying of an iron wire principally comprising Fe, a piercing plug can attain excellent heat shielding properties and seizure prevention properties due to this coating film, and the plug can have a long life. When the plug is regenerated, a coating the film can be formed again by sequentially performing shot blasting and arc spraying on a just-pierced plug, and thus the plug can be regenerated in a short time at a low cost.

公开(公告)号：DE69928635T2

公开(公告)日：2006-07-20

申请号：DE69928635

申请日：1999-12-08

Applicant: SUMITOMO METAL IND

Inventor： AMAYA HISASHI ,  ANRAKU TOSHIRO ,  HIDAKA YASUYOSHI

IPC: C22C38/18 ,  C21D7/06

Abstract: A martensitic stainless steel product having a chromium content of 9 to 15 % by weight and a surface from which mill scales generated during production are removed by a shot blasting. The surface satisfies that, when a color image of the surface taken with 640 x 480 pixels is analyzed on blue color and a histogram of the pixel numbers and the tones divided into 0 to 255 classes is obtained, a relationship between the maximum frequency Yp and the tone value Xp at which Yp is counted satisfies an inequality, 800Xp - Yp - 27000 > 0. This steel product is superior in weatherability under atmospheric environments, and also superior in sulfide stress cracking resistance under environments containing hydra-sulfide.

公开(公告)号：BRPI0410554A

公开(公告)日：2006-06-20

申请号：BRPI0410554

申请日：2004-05-20

Applicant: SUMITOMO METAL IND

Inventor： HIDAKA YASUYOSHI ,  ANRAKU TOSHIRO ,  YAMAKAMA TOMIO ,  KITAMURA YASUFUMI

IPC: B21B1/02 ,  B21B3/02 ,  B21B9/00 ,  B21B45/00 ,  C22C38/00 ,  C22C38/18

公开(公告)号：DE69928635D1

公开(公告)日：2006-01-05

申请号：DE69928635

申请日：1999-12-08

Applicant: SUMITOMO METAL IND

Inventor： AMAYA HISASHI ,  ANRAKU TOSHIRO ,  HIDAKA YASUYOSHI

IPC: C21D7/06 ,  C22C38/18

Abstract: A martensitic stainless steel product having a chromium content of 9 to 15 % by weight and a surface from which mill scales generated during production are removed by a shot blasting. The surface satisfies that, when a color image of the surface taken with 640 x 480 pixels is analyzed on blue color and a histogram of the pixel numbers and the tones divided into 0 to 255 classes is obtained, a relationship between the maximum frequency Yp and the tone value Xp at which Yp is counted satisfies an inequality, 800Xp - Yp - 27000 > 0. This steel product is superior in weatherability under atmospheric environments, and also superior in sulfide stress cracking resistance under environments containing hydra-sulfide.

公开(公告)号：CA2525147A1

公开(公告)日：2004-12-02

申请号：CA2525147

申请日：2004-05-20

Applicant: SUMITOMO METAL IND

Inventor： KITAMURA YASUFUMI ,  YAMAKAWA TOMIO ,  ANRAKU TOSHIRO ,  HIDAKA YASUYOSHI

IPC: B21B1/02 ,  B21B3/02 ,  B21B9/00 ,  B21B45/00 ,  C22C38/00 ,  C22C38/18

Abstract: A Fe-Cr alloy billet, characterized in that a high area % as high as 70 area % or more of the higher draft surface thereof is coated with a scale layer; a method for producing a Fe-Cr alloy billet wherein an ingot is subjected to blooming without de-scaling of the ingot. The Fe-Cr alloy billet allows the reduction of the thrust or enfoldment therein of scales and allows the significant reduction of the surface treatment prior to the manufacture of a tube in the production of a billet for a seamless tube. The employment of th e Fe-Cr alloy billet for the production of a seamless tube allows the producti on of a Fe-Cr alloy steel tube being comparatively difficult to manufacture wit h a reduced cost with good efficiency, which leads to the widespread applicati on thereof in the field of the production of a hot seamless steel tube.

公开(公告)号：DE69907988D1

公开(公告)日：2003-06-26

申请号：DE69907988

申请日：1999-02-22

Applicant: SUMITOMO METAL IND

Inventor： HIDAKA YASUYOSHI ,  ANRAKU TOSHIRO ,  AMAYA HISASHI

IPC: C21D1/18 ,  C21D6/00 ,  C21D8/10 ,  C21D9/08 ,  C22C38/00 ,  C22C38/18 ,  C22C38/38 ,  C23F15/00

Abstract: The martensitic stainless steel product comprises a base steel and a dual oxide scale layer on a surface of the steel, wherein the dual scale layer includes an inner scale layer containing FeCr2O4 and Fe3O4 as main components and an outer scale layer containing Fe3O4 as a main component and having an outermost Fe2O3 layer; or includes an inner scale layer containing FeCr2O4 and FeO as main components and an outer scale layer containing FeO and Fe3O4 as main components and having an outermost Fe2O3 layer. If the product is a steel pipe, it exhibits excellent corrosion resistance when used for an oil country tubular goods or line pipe.

公开(公告)号：AU732550B2

公开(公告)日：2001-04-26

申请号：AU6316699

申请日：1999-12-06

Applicant: SUMITOMO METAL IND

Inventor： AMAYA HISASHI ,  ANRAKU TOSHIRO ,  HIDAKA YASUYOSHI

IPC: C21D7/06 ,  C22C38/50

Abstract: A martensitic stainless steel product having a chromium content of 9 to 15 % by weight and a surface from which mill scales generated during production are removed by a shot blasting. The surface satisfies that, when a color image of the surface taken with 640 x 480 pixels is analyzed on blue color and a histogram of the pixel numbers and the tones divided into 0 to 255 classes is obtained, a relationship between the maximum frequency Yp and the tone value Xp at which Yp is counted satisfies an inequality, 800Xp - Yp - 27000 > 0. This steel product is superior in weatherability under atmospheric environments, and also superior in sulfide stress cracking resistance under environments containing hydra-sulfide.

公开(公告)号：CA2291857A1

公开(公告)日：2000-06-08

申请号：CA2291857

申请日：1999-12-06

Applicant: SUMITOMO METAL IND

Inventor： HIDAKA YASUYOSHI ,  ANRAKU TOSHIRO ,  AMAYA HISASHI

IPC: C21D7/06

Abstract: A martensitic stainless steel product having a chromium content of 9 to 15 % by weight and a surface from which mill scales generated during production are removed by a shot blasting. The surface satisfies that, when a color image of the surface taken with 640 X 480 pixels is analyzed on blue color and a histogram of the pixel numbers and the tones divided into 0 to 255 classes is obtained, a relationship between the maximum frequency Yp and the tone value Xp at which Yp is counted satisfies an inequality, 800Xp - Yp - 27000 > 0. This steel product is superior in weatherability under atmospheric environments, and also superior in sulfide stress cracking resistance under environments containing hydro-sulfide.

公开(公告)号：NO990824D0

公开(公告)日：1999-02-22

申请号：NO990824

申请日：1999-02-22

Applicant: SUMITOMO METAL IND

Inventor： HIDAKA YASUYOSHI ,  ANRAKU TOSHIRO ,  AMAYA HISASHI

IPC: C21D1/18 ,  C21D6/00 ,  C21D8/10 ,  C21D9/08 ,  C22C38/00 ,  C22C38/18 ,  C22C38/38 ,  C23F15/00 ,  C21B

Abstract: The martensitic stainless steel product comprises a base steel and a dual oxide scale layer on a surface of the steel, wherein the dual scale layer includes an inner scale layer containing FeCr2O4 and Fe3O4 as main components and an outer scale layer containing Fe3O4 as a main component and having an outermost Fe2O3 layer; or includes an inner scale layer containing FeCr2O4 and FeO as main components and an outer scale layer containing FeO and Fe3O4 as main components and having an outermost Fe2O3 layer. If the product is a steel pipe, it exhibits excellent corrosion resistance when used for an oil country tubular goods or line pipe.