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1. 发明专利

JPH05239556A 失效
公开(公告)号：JPH05239556A
公开(公告)日：1993-09-17
申请号：JP4484292
申请日：1992-03-02
申请人： NIPPON STEEL CORP
发明人： SAWA MASAAKI , HAMADA ISAO , TANAKA KOJI
IPC分类号： C21D9/56 , C21D11/00
摘要： PURPOSE:To precisely prevent the meandering of a metal strip by meandering extending direction distribution of an extension difference ratio of the passed metal strip, calculating the surface pressure loaded on its roll when this measured position reaches a straightening roll and obtaining the predicted meandering quantity on the straightening roll. CONSTITUTION:By arranging a shape detector 5 at the inlet side of bride rolls 3, the meandering quantity of a metal strip 1 on steering rolls 4 at the downstream side is predicted. A meandering predicting control meter 6 calculates the tension and the extension difference ratio in the width direction of the metal strip 1 on a shape detecting roll 5a by a signal of the shape detector 5. Based on the extension difference ratio distribution and the actual tension distribution, distribution of local incident angles between the steering roll 4 and the metal strip 1 is calculated, and based on this result, the predicting quantity of the meandering is calculated. Under consideration of time delay to this predicted meandering quantity, from the time passing the metal strip 1 through the shape detector 5 to the time reaching the steering roll 4, the correct command is given to the steering roll 4.

2. 发明专利

JPH05214505A FORMATION OF SPRAY DEPOSIT 失效
公开(公告)号：JPH05214505A
公开(公告)日：1993-08-24
申请号：JP2028292
申请日：1992-02-05
申请人： NIPPON STEEL CORP
发明人： SAWA MASAAKI , OHORI JUNJI , SATO SHINJI , SEO KAZUNORI
IPC分类号： C23C4/12
摘要： PURPOSE:To prevent the generation of the faults such as spitting in spray deposit and to simply form a laminated thermally sprayed layer having optional surface roughness, at the time of forming a thermally sprayed layer of metal, ceramics or the like on the surface of various materials, by subjecting the surface to roughening working as well as thermal spraying. CONSTITUTION:Metal, ceramics or the like are thermal-sprayed by a thermal spraying gun 1 while a roll 2 is rotated in the direction of the arrow, and immediately after that, laminated thermal spraying is applied while executing surface working to the surface of a thermally sprayed layer 3 by a circular grinding stone 4 or an abrasive cloth 5 fitted to a pressing jig 6 in the range of 1 to 15mum Ra roughness. The generation of the spitting defect caused by the inclusion of nonmelted grains, grains stuck to a thermally spraying gun or the like is prevented, and it can be worked to optional finish surface roughness at a low cost without requiring the formation of surface roughness by a special machining apparatus.

3. 发明专利

JPH01298177A SURFACE TREATMENT OF METALLIC SHEET 失效
公开(公告)号：JPH01298177A
公开(公告)日：1989-12-01
申请号：JP12962588
申请日：1988-05-27
申请人： NIPPON STEEL CORP
发明人： SAWA MASAAKI , OHORI JUNJI , AZUMA YOSHIAKI , SEO KAZUNORI
IPC分类号： B22F7/04 , C23C24/06 , C23C24/08 , C23C26/00
摘要： PURPOSE:To easily surface-treat a metallic sheet with good productivity by uniformly arranging metal powder on the metallic sheet surface, and rubbing the powder into the surface with a roll. CONSTITUTION:Metal powder 3 is supplied from a hopper 2 onto the surface of a steel sheet 1 traveling in direction of the arrow, and uniformly arranged. A metal such as zinc and nickel having a lower m.p. than the steel sheet 1 is used for the metal powder 3, and the particle diameter is appropriately controlled to about 0.01-100mu. The metal powder 3 is pressed by a roll 4 of ceramics, etc., and the roll 4 is rotated in the traveling direction of the steel sheet 1 or in the opposite direction at a velocity higher or lower than the traveling velocity of the steel sheet 1. By this method, the metal powder 3 is rubbed into the surface of the steel sheet 1 to form a mechanically alloyed layer. The alloyed layer is heated, as required, by a heater 5 such as plasma to improve its adhesion and denseness or cooled by a cooling nozzle 6, and then treated by a rolling machine 7 to flatten the surface.

4. 发明专利

JPS6152205B2 失效
公开(公告)号：JPS6152205B2
公开(公告)日：1986-11-12
申请号：JP18462583
申请日：1983-10-03
申请人： NIPPON STEEL CORP
发明人： CHIKAMATSU EIJI , SAWAI TOSHIAKI , KONDO ISAO , YAZAKI TAKASHI , SAWA MASAAKI , KATAOKA SHINICHI , SUGA MICHITARO
IPC分类号： C21B7/20 , B65B1/42 , B65D90/58 , C21B7/18 , F16K3/22 , F27D3/10

5. 发明专利

JPS6130993B2 失效
公开(公告)号：JPS6130993B2
公开(公告)日：1986-07-17
申请号：JP960081
申请日：1981-01-27
申请人： NIPPON STEEL CORP
发明人： MOTOHASHI NORIMASA , SAWA MASAAKI , HASEGAWA JUNZO
IPC分类号： B65D90/58 , B65D90/62

6. 发明专利

JPS59157567A Sampling device of charge in blast furnace 失效
标题翻译：在吹制炉中采集充电装置
公开(公告)号：JPS59157567A
公开(公告)日：1984-09-06
申请号：JP14460983
申请日：1983-08-08
申请人： Nippon Steel Corp
发明人： OKUNO YOSHIO , IRITA TOSHIYUKI , ISOYAMA TADASHI , SAWA MASAAKI
IPC分类号： C21B7/24 , G01N33/20
CPC分类号： G01N33/203
摘要： PURPOSE:To measure a change in reaction atmosphere, to sample a charge at a specific position, and to improve blast furnace operation by providing a charge sampling container in a vertically movable state atop of a tube body inserted into a blast furnace vertically. CONSTITUTION:The charge sampling container 20 is provided in the vertically movable state through a driving shaft 14 to the lower end of the tube body 9 of a vertical sonde inserted into the blast furnace near a gas sampling tube 15. When sampling is performed, the sonde 1 is suspended by a rope and a valve 4 is opened to insert the sonde into the furnace, and consequently the container 20 is lowered by its own weight together with the in-furnace charge to perform temperature measurement and gas sampling for a specific time, measuring a change in atmosphere. When the sonde reaches the specific position, the lowering of the main body is stopped and only the container 20 is suspended; and the change flows therein and the container is lifted. Therefore, the atmosphere is measured in the process of the lowering and the charge is sampled at the specific position to improve the blast furnace operation.
摘要翻译：目的：测量反应气氛的变化，对特定位置的电荷进行采样，并通过在竖直方向插入高炉的管体顶部的垂直移动状态提供充电取样容器来改善高炉操作。构成：电荷取样容器20通过驱动轴14向垂直移动状态设置在插入高炉的垂直探头的管体9的下端，靠近气体采样管15。当进行取样时，探头1由绳索悬挂，打开阀门4将探头插入炉内，因此容器20与炉内电荷一起被自重地下降，以进行温度测量和气体取样一段特定的时间测量气氛的变化。当探测器到达特定位置时，主体的下降停止，只有容器20被悬挂; 并且变化在其中流动并且容器被提升。因此，在降低过程中测量气氛，并在特定位置取样，以改善高炉操作。

7. 发明专利

JPH09195030A THERMAL SPRAY COATING METHOD FOR MAGNETIC CYLINDRICAL BASE MATERIAL 失效
公开(公告)号：JPH09195030A
公开(公告)日：1997-07-29
申请号：JP316296
申请日：1996-01-11
申请人： NIPPON STEEL CORP
发明人： SAWA MASAAKI , SATO SHINJI , TSUMURA YASUHIRO , ISHIMORI YUICHI
IPC分类号： C23C4/10 , C23C4/18
摘要： PROBLEM TO BE SOLVED: To improve the adhesion of sprayed coating film on a base material and to increase its durability by forming nonmagnetic sprayed coating on the surface of a magnetic cylindrical base material, applying high-frequency from the surface of this sprayed coating to heat the surface layer part of the base material and diffusing the surface layer part of the base material into the sprayed coating film. SOLUTION: Nonmagnetic sprayed coating film 2, e.g. of WC-Co is formed on the surface of a magnetic cylindrical base material 1 (such as a pipe made of steel). After that, while a high-frequency induction heating work coil 3 is moved in the longitudinal direction of the base material 1, high-frequency is applied to the surface of the sprayed coating film 2, and the surface layer part of the base material 1 is heated. Thus, the base material 1 thermally expands to apply face pressure to the sprayed coating film 2, the adhesion of the sprayed coating to the base material 1 increases, and the metallic atoms of the base material diffuse into the sprayed coating film 2 to remarkably improve the durability of the sprayed coating 2.

8. 发明专利

JPH09165666A THERMAL SPRAYING METHOD 失效
公开(公告)号：JPH09165666A
公开(公告)日：1997-06-24
申请号：JP32315795
申请日：1995-12-12
申请人： NIPPON STEEL CORP
发明人： SAWA MASAAKI , AZUMA YOSHIAKI , SATO SHINJI , TSUMURA YASUHIRO
IPC分类号： B05D1/08 , C23C4/12
摘要： PROBLEM TO BE SOLVED: To improve the adhesion of sprayed coating, at the time of projecting a thermal spray material obtd. by melting a thermal spray powder material onto the body to be thermally sprayed and executing thermal spraying, a vibrating the body to be thermally sprayed. SOLUTION: For example, at the time of projecting a thermal spray material in a half-melted state onto the body 2 to be thermally sprayed from a thermal spraying gun and forming sprayed coating 3, the thermal spraying is executed while the body 2 to be thermally sprayed is vibrated. Thus, the thermal spray material 1 projected onto the surface of the body 2 to be thermally sprayed deforms at the moment when it is in contact with the surface of the body 2 to be thermally sprayed, and in a state of being extended in the vibrating direction of the body 2 to be thermally sprayed and also in a way of being laminated, the mutual contact area expands, and the porosity in the sprayed coating 3 remarkably reduces to form into the sprayed coating 3 improved in denseness (the strength of the sprayed coating 3). Simultaneously, the contact relative rate between the thermal spray material 1 and the body 2 to be thermally sprayed increases to improve the adhesion of the sprayed coating 3 to the body 2 to be thermally sprayed.

9. 发明专利

JPH09157826A PROCESS ROLL FOR CARRYING COLD STEEL STRIP 失效
公开(公告)号：JPH09157826A
公开(公告)日：1997-06-17
申请号：JP31252195
申请日：1995-11-30
申请人： NIPPON STEEL CORP
发明人： SAWA MASAAKI , AZUMA YOSHIAKI , SATO SHINJI , TSUMURA YASUHIRO
IPC分类号： F16C13/00 , B21B39/00 , C23C4/10
摘要： PROBLEM TO BE SOLVED: To improve the wear resistance of a process roll and suppress the meandering of a cold steel strip by forming sprayed coating of cermet or ceramics having specified roughness on the surface of a process roll for carrying a cold steel strip. SOLUTION: Recessed parts 2 and projected parts 3 are formed on the surface of a process roll 1 such as a deflector roll, a pinch roll or the like for carrying a cold steel strip by shot blasting or the like, which is worked so as to regulate the roughness Ra of the roll to 1 to 10. Next, on this surface, sprayed coating 4 of cermet composed of metal or alloy such as Ni, Ni-Cr or the like and ceramics such as WC, TiC, NbC or the like or of ceramics such as WC, TiC, NbC or the like is formed by 5 to 20μm thickness. The wear resistance of the roll improves, and, by using the roll, the meandering of the steel strip to be carried can be prevented.

10. 发明专利

JPH0711420A ROLL FOR HEAT TREATMENT FURNACE 失效
公开(公告)号：JPH0711420A
公开(公告)日：1995-01-13
申请号：JP17763293
申请日：1993-06-25
申请人： NIPPON STEEL CORP , NITTETSU HARD KK
发明人： SAWA MASAAKI , OHORI JUNJI , SATO SHINJI , MURAKAMI SHIRO , YUBIYAMA KAZUYUKI , TSUDA TAKUYA
IPC分类号： C23C4/10 , C23C4/16
摘要： PURPOSE:To provide a roll (hearth roll) for heat treatment furnace, having high quality and long service life. CONSTITUTION:The roll for heat treatment furnace, which has a cermet film consisting of, by volume, 1-60% of. at least one or more kinds among borides, such as CrB2, ZrB2, WB, and TiB2, 5-50% of at least one or more kinds among carbides, such as Cr3C2, TaC, WC, ZrC, TiC, and NbC, and the balance essentially metal, is produced. By this method, high temp. wear resistance and build up resistance can be improved and the high quality of a product and the long service life of a roll to be used can be attained.

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