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公开(公告)号：EP1637241A4
公开(公告)日：2007-03-28
申请号：EP04734124
申请日：2004-05-20
Applicant: SUMITOMO METAL IND
Inventor： HIDAKA YASUYOSHI , ANRAKU TOSHIRO , YAMAKAWA TOMIO , KITAMURA YASUFUMI
CPC classification number: C22C38/18 , B21B1/026 , B21B3/02 , B21B9/00 , B21B45/00 , B21B2001/022 , C22C38/02 , C22C38/04
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 the Fe-Cr alloy billet for the production of a seamless tube allows the production of a Fe-Cr alloy steel tube being comparatively difficult to manufacture with a reduced cost with good efficiency, which leads to the widespread application thereof in the field of the production of a hot seamless steel tube.
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公开(公告)号：CA2525147C
公开(公告)日：2009-08-18
申请号：CA2525147
申请日：2004-05-20
Applicant: SUMITOMO METAL IND
Inventor： YAMAKAWA TOMIO , HIDAKA YASUYOSHI , ANRAKU TOSHIRO , KITAMURA YASUFUMI
Abstract: Fe-Cr alloy billet manufacturing method according to the present invention, since the blooming is carried out with the high reduction rate surface of the cast steel covered with a scale layer of a large area rate as 70 % or more and without the descaling applied, can reduce the indentation and inclusion of the scale. Thereby, in the case of a billet for use in seamless steel pipes being manufactured from a steel strip of a Fe-Cr alloy, surface treatment before tube-making can be largely reduced. Thereby, when the Fe-Cr alloy billet is adopted in manufacturing seamless steel pipes, since even the Fe-C r alloy steel pipe relatively hard to process can be manufactured at low manufacturing cost and efficiently, it can be widely applied in a field of manufacturing hot seamless steel pipes.
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公开(公告)号：AR045380A1
公开(公告)日：2005-10-26
申请号：ARP040102934
申请日：2004-08-13
Applicant: SUMITOMO METAL IND
Inventor： ANRAKU TOSHIRO , YAMAKAWA TOMIO , KITAMURA YASUFUMI , HIDAKA YASUYOSHI
Abstract: Procedimiento de fabricación de un tocho de aleación Fe-Cr, donde como el desbaste es llevado a cabo con una superficie de alta régimen de reducción del lingote de acero cubierta con una capa de cascarillas con gran relación de área de 70% o más y sin aplicar un proceso de descascarillamiento, se puede reducir la indentación e inclusión de las cascarillas. En consecuencia, en el caso de un tocho para usar en la fabricación de tubos de acero sin costura a partir de un lingote de acero de aleación Fe-Cr, puede reducirse en gran medida el tratamiento superficial antes de la fabricación de tubos. En consecuencia, cuando el tocho de aleación Fe-Cr es adoptado para fabricar tubos de acero sin costura, como aún el tubo de acero de aleación Fe-Cr, relativamente difícil de procesar, puede ser fabricado con bajo costo de fabricación y eficientemente, el mismo puede ser aplicado ampliamente en el campo de fabricación en caliente de tubos de acero sin costura. Reivindicación 7: procedimiento de fabricación de un tocho de aleación Fe-Cr según las reivindicaciones 5 y 6 , caracterizado porque el lingote de acero es mantenido en una atmósfera con 2,5% en volúmen o más de vapor a una temperatura de calentamiento de 1200ºC o más durante 2 horas o más para generar cascarillas.
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公开(公告)号：ZA200510009B
公开(公告)日：2006-12-27
申请号：ZA200510009
申请日：2005-12-09
Applicant: SUMITOMO METAL IND
Inventor： HIDAKA YASUYOSHI , ANRAKU TOSHIRO , YAMAKAWA TOMIO , KITAMURA YASUFUMI
IPC: B21B20060101 , B21B1/02 , B21B3/02 , B21B9/00 , B21B45/00 , C22C20060101 , C22C38/00 , C22C38/18
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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
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Patent Agency Ranking
公开(公告)号：MXPA05012509A
公开(公告)日：2006-02-08
申请号：MXPA05012509
申请日：2004-05-20
Applicant: SUMITOMO METAL IND
Inventor： KITAMURA YASUFUMI
Abstract: Procedimiento de fabricacion de tocho de aleacion de Fe-Cr segun la presente invencion, como la laminacion se lleva a cabo con superficie de alto regimen de reduccion de la lamina de acero recubierta con una capa de cascarillas de una gran relacion superficial de 70% o mas y sin aplicar el descascarillado, se puede reducir la indentacion e inclusion de las cascarillas. Por lo mismo, en caso de un tocho que se usa en la fabricacion de tubos de acero sin costura a partir de una lamina de acero de una aleacion de Fe-Cr, se puede reducir en gran medida el tratamiento superficial antes de la fabricacion de los tubos. Por lo que, cuando el tocho de aleacion de Fe-Cr es adoptado para la fabricacion de tubos de acero sin costura, aun cuando el tubo de acero de aleacion de Fe-Cr es duro para procesar, se puede fabricar a un costo bajo de fabricacion y de manera eficiente, siendo posible que el mismo puede sea aplicado ampliamente en el campo de la fabricacion en caliente de tubos de acero sin costura.
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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
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.
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公开(公告)号：JP2006289454A
公开(公告)日：2006-10-26
申请号：JP2005114996
申请日：2005-04-12
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： KITAMURA YASUFUMI , KUBO YASUSHI
IPC: B21B1/02
Abstract: PROBLEM TO BE SOLVED: To provide a bloom rolling method for a round billet, which prevents the distortion or similar deformation of a material to be rolled and can perform bloom rolling in a stable state.
SOLUTION: In the invented bloom rolling method for the round billet, finish rolling of the material to be rolled is performed with round caliber rolls under the conditions meeting the following formula (1): α≥-0.000734×D+1.034 where α is a ratio of a contact width of the roll Bm(mm) to a width of material to be rolled at an inlet side of roll B(mm), and D is the diameter (mm) of the round billet.
COPYRIGHT: (C)2007,JPO&INPITAbstract translation: 要解决的问题：为了提供一种圆钢坯的轧制方法，其防止待轧制材料的变形或类似的变形，并且可以在稳定状态下进行轧制。 解决方案：在本发明的圆坯坯坯轧制方法中，在满足下列公式（1）的条件下，用圆口径辊进行轧制材料的精轧：α≥-0.000734×D + 1.034其中 α是辊Bm（mm）的接触宽度与辊B的入口侧的被轧材的宽度的比（mm），D是圆钢坯的直径（mm）。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2006110590A
公开(公告)日：2006-04-27
申请号：JP2004299573
申请日：2004-10-14
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： KITAMURA YASUFUMI , NAKANISHI TETSUYA , KUBO YASUSHI
IPC: B21B19/04
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a seamless steel tube by which the seamless steel tube where occurrence of inner surface defects is reduced is manufactured, even when performing piercing rolling by using high Cr-containing steel or martensitic stainless steel.
SOLUTION: In this method, the seamless steel tube is manufactured by performing the piercing rolling by using Cr-steel containing, by mass, chromium of ≥9% or the martensitic stainless steel. In this manufacturing method of the seamless steel tube, the piercing rolling is performed by using the billet for making the tubes, in the cross section of a billet for making tube which is obtained by blooming a base stock having a rectangular cross section, the center segregation zone is not parted and the value of the ratio (r/D) of the distance r between the end part in the radial direction of a billet of the center segregation zone on the cross section of the billet and the center of the billet to the diameter D of the billet is ≥0.12.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：为了提供制造无缝钢管的方法，通过该无缝钢管制造出内表面缺陷发生减少的无缝钢管，即使使用高含Cr钢或马氏体不锈钢进行穿孔轧制 钢。 解决方案：在该方法中，通过使用含有质量≥9％的Cr的Cr钢或马氏体不锈钢进行穿孔轧制，制造无缝钢管。 在该无缝钢管的制造方法中，通过使用用于制造管子的坯料，在通过使具有矩形横截面的基材开花而获得的制造管坯的横截面中，进行穿孔轧制，中心 偏析区不分开，坯料横截面上的中心偏析区的坯料的径向端部与坯料中心的距离r的比值（r / D）的值相对于 钢坯的直径D≥0.12。 版权所有（C）2006，JPO＆NCIPI
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10.发明专利
公开(公告)号：JP2004298937A
公开(公告)日：2004-10-28
申请号：JP2003095802
申请日：2003-03-31
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： KITAMURA YASUFUMI , KUBO YASUSHI
Abstract: PROBLEM TO BE SOLVED: To provide a rolling method by which a continuously cast slab having high flatness ratio as a base stock for seamless steel tubes made of high-Cr-containing steel can be bloomed without generating surface flaws.
SOLUTION: In this method, when rolling a continuously cast slab made of high-Cr-containing steel ( Cr ≥ 8% ) into a round billet of a base material for manufacturing seamless steel tubes, a cast slab having a rectangular cross section which is ≤ 0.5 in the ratio d/C of the target diameter (d) of the round billet to the length (C) of the short side of the continuously cast slab is used, or, under conditions of the ratio d/C of > 0.5, a cast slab having a rectangular cross section which is ≤ 0.7 mm in the depth of oscillation marks on the surface of the cast slab, ≥ 1.5 in the ratio A/C of the length (A) of the long side to the length (C) of the short side and the ratio d/C of which satisfies the relationship expressed by the next formula. Where, the formula is expressed by d/CAbstract translation: 要解决的问题：提供一种轧制方法，通过该轧制方法可以开发出由高Cr含量钢制成的无缝钢管的平坦度高的连续铸造板坯，而不产生表面缺陷。 解决方案：在该方法中，当将由含Cr高的钢（Cr≥8％）制成的连续铸造的板坯轧制到用于制造无缝钢管的基材的圆钢坯中时，将具有矩形十字形 使用圆形坯料的目标直径（d）与连续铸坯的短边长度（C）的比率d / C≤0.5的部分，或者在比率d / C > 0.5，在铸坯表面上的振动深度为0.7mm的矩形截面的铸坯的长度方向（A）的比A / C为1.5以上 短边的长度（C）和其比d / C满足下一公式表示的关系。 其中，公式由d / C <-0.041×（A / C）+ 0.997表示。 版权所有（C）2005，JPO＆NCIPI
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