公开(公告)号：JP2010227999A

公开(公告)日：2010-10-14

申请号：JP2009111068

申请日：2009-04-30

Applicant: Sumitomo Metal Ind Ltd ,  住友金属工業株式会社

Inventor： HIGASHIDA YASUTO ,  HIDAKA YASUYOSHI ,  SHIMODA KAZUMUNE ,  YAMAKAWA TOMIO

IPC: B21B25/04 ,  B21B19/04 ,  B21B25/00

CPC classification number: B21B25/00 ,  B21B19/04 ,  B21B25/04

Abstract: PROBLEM TO BE SOLVED: To provide a plug which enables flaws on the internal surface of a hollow tube stock formed by piercing/rolling to be prevented, and can be produced without requiring long production time and has the prolonged life.
SOLUTION: The plug 2 includes: a front portion 21 having a convex curvature; a column portion 22 having approximately a columnar shape; a trunk portion 23 having an outside diameter which is enlarged gradually toward the rear end; a mandrel connecting portion 26 provided in the rear end portion of the plug 2 and a lubricant jetting hole 24 which penetrates the trunk portion 23 from the mandrel connecting portion 26 and opened on the surface of the column portion 22. On the surface of the base metal of the front portion 21 and of the trunk portion 23, a coating film 27 which is composed of oxides and Fe is formed by arc spraying method using an iron wire. During piercing/rolling, the plug 2 pierces a base stock while jetting the lubricant from the jetting hole 24.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供能够防止穿孔/轧制形成的中空管坯的内表面的缺陷的插头，并且可以在不需要长的生产时间并且具有延长的寿命的情况下制造。 插头2包括：具有凸曲率的前部21; 具有大致圆柱形状的柱部22; 具有朝向后端逐渐扩大的外径的主干部23; 设置在插头2的后端部的心轴连接部26和从心轴连接部26穿过躯干部23并在柱部22的表面开口的润滑剂喷出孔24。 通过使用铁丝的电弧喷涂法形成前部21和主体部23的金属，由氧化物和Fe构成的涂膜27。 在穿孔/轧制期间，塞子2从喷射孔24喷射润滑剂时刺穿基础材料。版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2007268562A

公开(公告)日：2007-10-18

申请号：JP2006096888

申请日：2006-03-31

Applicant: Sumitomo Metal Ind Ltd ,  住友金属工業株式会社

Inventor： NAKAIKE HIROTSUGU ,  HIDAKA YASUYOSHI ,  NOGAMI YUTAKA

IPC: B21B25/04 ,  C21D1/74 ,  C21D9/08

CPC classification number: B21B23/00 ,  B21B17/02 ,  B21B17/04 ,  B21B19/04 ,  B21B25/04 ,  B21B45/004 ,  C21D1/70 ,  C21D1/74 ,  C21D3/00 ,  C21D8/10 ,  C21D9/08

Abstract: PROBLEM TO BE SOLVED: To provide a method or the like for manufacturing a seamless steel tube by which carburization which can be generated on the inside surface of the tube is suppressed easily and effectively.
SOLUTION: This method for manufacturing the seamless steel tube is a method for manufacturing the seamless steel tube by which a tube stock P which is stretched and rolled with a mandrel mill by using the mandrel on which a lubricant containing carbon is applied is reheated in a reheating furnace 10 and an oxidizing gas is supplied in the inside of the tube stocks P in the state where the tube stocks P carried in the reheating furnace 10 are 550-1,000°C.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于制造无缝钢管的方法等，通过该无缝钢管可以容易且有效地抑制可在管内表面产生的渗碳。 解决方案：这种无缝钢管的制造方法是一种用于制造无缝钢管的方法，其中通过使用其上涂覆有含有润滑剂的心轴的芯棒式轧机被拉伸和轧制的管坯P是 在再加热炉10中再加热，并且在再加热炉10中携带的管坯P为550〜1,000℃的状态下，在管材P的内部供给氧化气体。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2006263817A

公开(公告)日：2006-10-05

申请号：JP2006045936

申请日：2006-02-22

Applicant: Sumitomo Metal Ind Ltd ,  住友金属工業株式会社

Inventor： NAKAIKE HIROTSUGU ,  HIDAKA YASUYOSHI ,  IIDA SUMIO ,  KUSUDA HIROKI ,  SAKIYAMA MASAMI

IPC: B21B25/04 ,  B21B25/06

Abstract: PROBLEM TO BE SOLVED: To manufacture a seamless pipe while effectively suppressing carburization on the seamless pipe without causing a disturbance in the operation.
SOLUTION: The process comprises the steps of: cleaning of a transfer equipment installed at least between a lubricant coating device 7 located in a transfer step of a mandrel bar B and the entrance of the mandrel mill 8; cleaning of the mandrel bar B used for stretch-rolling in the upstream of the lubricant coating device 7; and coating of a non-graphite lubricant over the mandrel bar B by the lubricant coating device 7. The seamless pipe is manufactured while rinsing the transfer equipment and the mandrel bar B respectively so that both formula (1): 0.08×C1+0.05×C2≤3, and formula (2): 3≤C1+C2≤50 are satisfied, where C2(g/m
2 ) is graphite quantity adhered to the surface of the mandrel bar B prior to the stretch-rolling; C1(g/m
2 ) is carbon content included in an organic binder of the lubricant.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：制造无缝管，同时有效地抑制无缝管上的渗碳，而不会造成操作的干扰。 解决方案：该方法包括以下步骤：清洁至少安装在位于芯棒B的转移步骤中的润滑剂涂覆装置7和芯棒式无缝管轧机8的入口之间的转移设备; 在润滑剂涂布装置7的上游清洁用于拉伸轧制的芯棒B; 并且通过润滑剂涂布装置7在芯棒B上涂覆非石墨润滑剂。分别在分别漂洗转移设备和芯棒B的同时制造无缝管，使得式（1）：0.08×C1 + 0.05× C2≤3，式（2）：3≤C1+C2≤50，其中C2（g / m 2 ）是在芯棒B的表面之前附着的石墨量 拉伸轧制; C1（g / m 2 ）是包含在润滑剂的有机粘合剂中的碳含量。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006169579A

公开(公告)日：2006-06-29

申请号：JP2004362808

申请日：2004-12-15

Applicant: Sumitomo Metal Ind Ltd ,  住友金属工業株式会社

Inventor： HIDAKA YASUYOSHI ,  KANZAKI MANABU ,  ANRAKU TOSHIRO

IPC: C22C19/05 ,  G21C19/307 ,  G21D1/00

CPC classification number: Y02E30/40

Abstract: PROBLEM TO BE SOLVED: To provide an Ni-base alloy product which is minimal in the elution of Ni during use under a high-temperature water environment over a long period.
SOLUTION: The Ni-base alloy product has a composition consisting of, by mass, ≤0.15% C, ≤1.0% Si, ≤2.0% Mn, ≤0.03% P, ≤0.03% S, 10 to 40% Cr, ≤15% Fe, 0.1 to 0.5% Ti, one or more kinds among 0.001 to 0.03% Ca, 0.005 to 0.2% rare earth elements (REM) and 0.001 to 0.03% Mg, and the balance Ni with impurities and also has an oxide film composed mainly of Cr oxide and having 0.1 to 2μm thickness on the surface. Further, in the Ni-base alloy product, no pores having a diameter of ≥2μm exist in the interface between the oxide film formed on the surface and the alloy under it, and also the number of pores having a diameter of ≥0.2 to

Abstract translation: 要解决的问题：提供在高温水环境下长时间使用时Ni的洗脱最小的Ni基合金产品。 解决方案：Ni基合金产品的质量分数为≤0.15％C，≤1.0％Si，≤2.0％Mn，≤0.03％P，≤0.03％S，10-40％Cr ，≤15％Fe，0.1〜0.5％Ti，0.001〜0.03％的Ca，0.005〜0.2％的稀土元素（REM）和0.001〜0.03％的Mg中的1种以上，余量为Ni和杂质 氧化膜主要由Cr氧化物构成，表面厚度为0.1〜2μm。 此外，在Ni基合金制品中，在表面形成的氧化膜与其下面的合金之间的界面中不存在直径≥2μm的孔，直径≥0.2〜 界面的单位长度为50μm的2μm为≤4。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2001303207A

公开(公告)日：2001-10-31

申请号：JP2000127488

申请日：2000-04-27

Applicant: SUMITOMO METAL IND

Inventor： HIDAKA YASUYOSHI ,  AMAYA TAKASHI ,  ANRAKU TOSHIRO

IPC: B21B19/04 ,  C21D1/70 ,  C21D8/10 ,  C22C38/00 ,  C22C38/40

Abstract: PROBLEM TO BE SOLVED: To provide a martensitic seamless stainless steel pipe whose surface is provided with scale excellent in adhesion and to provide its producing method. SOLUTION: This martensitic seamless stainless steel pipe contains, by mass, 0.2 to 0.5% Ni and 9 to 16% Cr, and has a boundary between scale on the surface and the steel which is provided with an Ni concentrated layer containing >=3% Ni, and in this producing method, the surface of a hollow pipe is coated with an oxidizer containing boric acid, and heating is performed.

公开(公告)号：JP2000239796A

公开(公告)日：2000-09-05

申请号：JP19037099

申请日：1999-07-05

Applicant: SUMITOMO METAL IND

Inventor： HIDAKA YASUYOSHI ,  ANRAKU TOSHIRO ,  OTSUKA NOBUO ,  NISHIMURA SHOJI

IPC: C22C38/00 ,  C22C38/18

Abstract: PROBLEM TO BE SOLVED: To provide a hot rolled steel wire rod with scale whose surface covered with a scale layer excellent in protecting properties in the process of storage and transport and mechanical descaling properties. SOLUTION: As to the hot rolled wire rod with scale whose surface is covered with a scale layer in which the area ratio of defect generating parts causing blisters is

公开(公告)号：JPH11158600A

公开(公告)日：1999-06-15

申请号：JP32400397

申请日：1997-11-26

Applicant: SUMITOMO METAL IND

Inventor： HIDAKA YASUYOSHI ,  ANRAKU TOSHIRO

IPC: B21B3/00 ,  C22C38/00 ,  C23C8/18

Abstract: PROBLEM TO BE SOLVED: To obtain a black film-coated seamless steel pipe of a 13Cr series stainless steel excellent in corrosion resistance by providing at least the surface in a stainless seamless steel pipe contg. a specified amt. of Cr with a scale layer as an internal layer and incorporating the scale layer with FeCr2 O4 and a specified ratio or above of Fe2 SiO4 . SOLUTION: This stainless steel pipe is the one in which at least the surface in the pipe is provided with a scale layer as an internal layer 4 and contg. 11 to 15 wt.% Cr, and the scale layer is incorporated with FeCr2 O4 and >=5 vol.% Fe2 SiO4 or incorporated with FeCr2 O4 , FeO and Fe2 SiO4 . In the case of the former, the adhesion of scale is improved, and in the case of the latter, its corrosion resistance and adhesion are remarkably improved. The latter steel pipe can be obtd. by subjecting a pipe to heating treatment in an atmospheric gas contg. 15 to 25 vol.% water vapor in a stage after piercing by a Mannesman-mandrel mill pipe making method.

公开(公告)号：JPH10298657A

公开(公告)日：1998-11-10

申请号：JP10456697

申请日：1997-04-22

Applicant: SUMITOMO METAL IND

Inventor： HIDAKA YASUYOSHI ,  OTSUKA NOBUO

IPC: C21D8/10 ,  C21D9/08 ,  C22C38/00 ,  C22C38/40

Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a seamless martensitic stainless steel tube with high efficiency, and particularly, a manufacturing method by highly efficient descaling. SOLUTION: A steel, having a composition containing, by weight, 0.1-0.5% C, 0.35-1% Si, 0.1-1.2% Mn, 11-16% Cr, and 0-6.5% Ni, is formed into a seamless steel tube by the tube making process including piercing rolling and finish rolling. This seamless steel tube is hardened and then subjected to heating treatment in an atmosphere containing >=12% steam to undergo tempering treatment.

公开(公告)号：JP2012021121A

公开(公告)日：2012-02-02

申请号：JP2010162159

申请日：2010-07-16

Applicant: Sumitomo Metal Ind Ltd ,  住友金属工業株式会社

Inventor： SHIMODA KAZUMUNE ,  YAMAKAWA TOMIO ,  MURAMATSU KOJI ,  INOUE YUJI ,  NISHIMORI JUNICHI ,  HIDAKA YASUYOSHI ,  MATSUMOTO KEIJI ,  KATO TAKAHISA ,  AKIYAMA SHUICHI

IPC: C10M125/28 ,  C03C8/02 ,  C10M125/10 ,  C10M125/26 ,  C10N10/04 ,  C10N20/00 ,  C10N20/02 ,  C10N30/10 ,  C10N40/24

CPC classification number: C09K15/02 ,  B05D3/02 ,  B21B45/0242 ,  C03C3/087 ,  C03C3/093 ,  C03C8/02 ,  C03C8/04 ,  C03C8/14 ,  C03C8/16 ,  C03C8/22 ,  C10M173/02 ,  C10M2201/062 ,  C10M2201/087 ,  C10M2201/103 ,  C10M2201/12 ,  C10N2210/02 ,  C10N2230/10 ,  C10N2240/40 ,  C10N2240/403 ,  C21C7/06 ,  C21D1/70 ,  C21D8/0226 ,  C21D8/0284 ,  C21D8/10 ,  C23C24/10

Abstract: PROBLEM TO BE SOLVED: To provide an antioxidant agent which can prevent the formation of scale on the surface of a heated metallic material more effectively compared with conventional antioxidant agents.SOLUTION: The antioxidant agent comprises multiple glass frits having different softening points and an inorganic compound having a melting point of ≤600°C. The inorganic compound can be softened mostly in a low temperature range around 600°C. The multiple glass frits can be softened mostly in a temperature range of from 600 to 1,300°C. Therefore, the antioxidant agent can cover the surface of a metallic material in a broad temperature range and can prevent the oxidization of the surface of the metallic material and thereby prevent the formation of scale on the surface.

Abstract translation: 要解决的问题：与常规的抗氧化剂相比，提供一种能够更有效地防止加热金属材料表面上形成垢的抗氧化剂。 解决方案：抗氧化剂包括具有不同软化点的多个玻璃料和熔点≤600℃的无机化合物。 无机化合物主要在600℃左右的低温范围内软化。 多个玻璃料可以在600至1300℃的温度范围内软化。 因此，抗氧化剂可以在宽的温度范围内覆盖金属材料的表面，并且可以防止金属材料的表面的氧化，从而防止在表面上形成氧化皮。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2006082100A

公开(公告)日：2006-03-30

申请号：JP2004267823

申请日：2004-09-15

Applicant: Sumitomo Metal Ind Ltd ,  住友金属工業株式会社

Inventor： NAKAIKE HIROTSUGU ,  IIDA SUMIO ,  HIDAKA YASUYOSHI ,  YOSHIZAWA MITSURU

IPC: B21B25/06 ,  B21B25/00 ,  C23C22/50 ,  C23C22/68

Abstract: PROBLEM TO BE SOLVED: To provide a method by which the service life of a mandrel bar is improved without bringing about the deterioration of the manufacturing efficiency and thickness accuracy of a seamless steel tube.
SOLUTION: This method is a method by which the service life of the mandrel bar which is used for rolling with a mandrel mill is improved and which includes a first process for removing a material which is coagulated on the outer surface of the mandrel bar used for rolling and of which a tube stock is composed and a second process for forming an iron hydroxide film on the outer surface of the mandrel bar.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种改善芯棒的使用寿命而不会导致无缝钢管的制造效率和厚度精度降低的方法。 解决方案：该方法是改善用于用芯棒式无缝管轧机轧制的芯棒的使用寿命的方法，其包括用于去除在心轴的外表面上凝结的材料的第一工艺 用于轧制并且其中组成管材的棒和在芯棒的外表面上形成氢氧化铁膜的第二工艺。 版权所有（C）2006，JPO＆NCIPI