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1. 发明专利

JP2004157114A Method and instrument for measuring material thickness 有权
公开(公告)号：JP2004157114A
公开(公告)日：2004-06-03
申请号：JP2003324535
申请日：2003-09-17
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： OKUNO MAKOTO , SATO HIDEO , KLEIN MARVIN , POUET BRUNO
IPC分类号： G01B17/02 , G01N29/00 , G01N29/18
CPC分类号： G01B17/02
摘要： PROBLEM TO BE SOLVED: To precisely measure a thickness of a material by simple instrument constitution, even when a material temperature is fluctuated.
SOLUTION: A surface of the material 100 is irradiated with a laser beam to generate an ultrasonic wave inside the material, and the thickness of the material is calculated based on a longitudinal wave and a propagation time of a mode transformation wave in the material.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2011212734A Seamless tube manufacturing method 审中-公开
标题翻译：无缝管制造方法
公开(公告)号：JP2011212734A
公开(公告)日：2011-10-27
申请号：JP2010085252
申请日：2010-04-01
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： KATSUMURA TATSURO , NAGAHAMA TAKUYA , ISHIKAWA KAZUTOSHI , SATO HIDEO
IPC分类号： B21B19/04
摘要： PROBLEM TO BE SOLVED: To provide a seamless tube manufacturing method which can advantageously suppress the occurrence of internal flaw in a piercing-rolling process.SOLUTION: A plug before use is heated or cooled so that the temperature of the plug just before piercing (plug initial temperature Tp0) is in the range of 300 to 600°C (exclusive). More specifically, a plug for use in piercing only one material or a first material in a plurality of materials that successively undergo piercing-rolling is heated from approximately room temperature and to an initial plug temperature in the range of 300 to 600°C (exclusive). The heating may be conducted by any heating means such as furnace heating or burner heating. For the plug for use in piercing a second material or later material after use in the first material in the plurality of materials that successively undergo piercing-rolling, the plug raised to an elevated temperature due to the piercing of the first or later material is heated to the initial plug temperature of 300 to 600°C (exclusive) before used in piercing each of the second or later materials.
摘要翻译：要解决的问题：提供一种无缝管制造方法，其可以有利地抑制穿孔轧制过程中内部缺陷的发生。解决方案：使用前的塞子被加热或冷却，使得刚好穿孔之前的塞子的温度（塞子初始温度Tp0）在300〜600℃的范围内（排他性）。更具体地，用于刺穿仅一种材料或连续进行穿孔轧制的多种材料中的第一材料的塞子从大约室温加热到初始塞子温度在300-600℃的范围内）。加热可以通过任何加热装置进行，例如炉加热或燃烧器加热。对于用于在连续进行穿孔轧制的多种材料中的第一种材料中使用后将第二种材料或后续材料刺穿的插头，由于第一种或更多种材料的刺穿而升高到高温的插头被加热在初始插头温度为300至600°C（独占）之前，用于刺穿每个第二个或更晚的材料。

3. 发明专利

JP2003225701A DEVICE FOR CONTINUOUSLY ROLLING SEAMLESS STEEL TUBE 审中-公开
公开(公告)号：JP2003225701A
公开(公告)日：2003-08-12
申请号：JP2002021265
申请日：2002-01-30
申请人： JFE STEEL KK
发明人： SATO NORIO , ONISHI TOSHIO , SATO HIDEO
IPC分类号： B21B23/00 , B21B15/00 , B21B43/00 , B21B45/02
摘要： PROBLEM TO BE SOLVED: To provide a device for continuously rolling a seamless steel tube for manufacturing products excellent in quality in high yield without lowering productivity when hot-rolling the products. SOLUTION: In a manufacturing device for seamless steel tubes which is provided with: an elongator for hot manufacturing a pierced cast billet into a tube having a tentative dimension; a reheating furnace for again heating the obtained steel tube; a stretch-reducer for drawing a steel tube extracted from the reheating furnace at 600-850°C; and conveying means of the steel tube for linking between the elongator and the reheating furnace and between the reheating furnace and the stretch-reducer, a cooling bed having variable cooling capacity is provided on the conveyance route between the elongator and the reheating furnace and a soaking pit for soaking the cooled steel tube and a joining device for joining the rear end of a soaked preceding steel tube to the tip of the succeeding steel tube are provided on the downstream side of the cooling bed. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP2003200206A APPARATUS FOR MANUFACTURING SEAMLESS STEEL TUBE 审中-公开
公开(公告)号：JP2003200206A
公开(公告)日：2003-07-15
申请号：JP2001396503
申请日：2001-12-27
申请人： JFE STEEL KK
发明人： SATO NORIO , ONISHI TOSHIO , SATO HIDEO
IPC分类号： B21B23/00 , B21B17/02 , B21B17/14 , B21B43/00 , B21B43/10 , B21B45/02 , C21D8/10
摘要： PROBLEM TO BE SOLVED: To provide a device for manufacturing a seamless steel tube with which products excellent in quality is manufactured efficiently without lowering productivity when hot-rolling. SOLUTION: In the manufacturing apparatus of the seamless steel tube, which is provided with an elongater for hot manufacturing a pierced cast steel billet into the tube having reasonable dimensions, a reheating furnace for again heating an obtained steel tube, a stretch reducer for drawing a steel tube extracted from the reheating furnace at 600-850°C and a transporting means for steel tubes for connecting between the elongater and the reheating furnace and between the reheating furnace and the stretch reducer, a cooling bed whose cooling capacity is variable is provided in the transporting means between the elongater and the reheating furnace. In such a case, it is preferable that the cooling bed whose cooling capacity is variable is of a three-dimensional system. COPYRIGHT: (C)2003,JPO

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