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1. 发明专利

JPH11131202A HOT DIP METAL COATING DEVICE 失效
公开(公告)号：JPH11131202A
公开(公告)日：1999-05-18
申请号：JP29547797
申请日：1997-10-28
申请人： HITACHI LTD
发明人： SHIMOGAMA HIRONORI , KANI YASUNORI , NAKAGAWA MOROO , SAKAI JUNJI , SAITO YUKIO , NISHI HIDETOSHI
IPC分类号： C23C2/02 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a hot dip metal coating device by which the quality of a plated layer improves. SOLUTION: A steel strip 1 is introduced into a bath of hot dip metal 13 in a hot dip metal pot 12, its progressing direction is changed to the upper direction by a sink roll 14, and it goes outside of the bath of the hot dip metal, where the sink roll 14 is composed of a base material 14b composed of a steel material and a surface layer 14a of a ceramics treated layer in which elements capable of chemically bonding with elements contained in the metal of the base material 14b formed on the surface of the base material 14b are accumulated, bonded with the elements in the metal and having corrosion resistance.

2. 发明专利

JPH0938752A APPARATUS FOR CONTINUOUSLY CASTING THIN SHEET 失效
公开(公告)号：JPH0938752A
公开(公告)日：1997-02-10
申请号：JP19350995
申请日：1995-07-28
申请人： HITACHI LTD
发明人： NISHINO TADASHI , YOSHIMURA YASUTSUGU , HORII KENJI , SHIMOGAMA HIRONORI , HIRANO SATOSHI , AOTAME TAKAHARU
IPC分类号： B22D11/04 , B22D11/05 , B22D11/051 , B22D11/053 , B22D11/055
摘要： PROBLEM TO BE SOLVED: To improve workability by simplifying an assembling work of a short side refractory and shortening the assembling time and to cast non-defect slab from the initial stage of casting by realizing preheating of the short side refractory having good heat efficiency, in a thin sheet continuous casting apparatus. SOLUTION: In the contracting type mold constituted with long side mold plates 2, 3 and short side mold plates 4, 5, the short side mold plate 5 (or the short side mold plate 4) is constituted with an upper part short side refractory 9, lower part short side cooling plate and a back plate at the back surface of the short side cooling plate. Then, the short side refractory 9 is interposed with a clamp-link device 30 freely opeable/closable and having small contacting area from the back surface. Further, a parallel-link mechanical is constituted with the clamp-link device 30 and the short side refractory 9.

3. 发明专利

JPH0890010A WIDTH COMPRESSING MACHINE AND ROLLING MILL 失效
公开(公告)号：JPH0890010A
公开(公告)日：1996-04-09
申请号：JP21982094
申请日：1994-09-14
申请人： HITACHI LTD
发明人： NOGAMI TADAHIKO , NAKAMURA ICHIRO , HEIKO KENJI , SADAMORI HIROYUKI , YASUDA KENICHI , NARITA KENJIRO , HORII KENJI , SHIMOGAMA HIRONORI
IPC分类号： B21B1/02 , B21B11/00 , B21B15/00 , B21B37/22
摘要： PURPOSE: To enable generating resonance on a material and to increase the accelerating effect of plastic deformation by vibrating by making vibration at very high frequency at the time of plastically working the materials. CONSTITUTION: By providing cylinders 4 for vibrating means for adding vibration to accelerate the plastic deformation of the materials separately from cylinders 3 for compressing means for loading main working force, the compressing means which require a large thrust and stroke and the vibrating means whose thrust and stroke may be smaller but which require high frequency are independently composed and vibration is directly added to the material 1 without anvils 2. The frequency at the vibration limit of the vibrating means is increased and the material is vibrated at the resonant frequency of the material or the nearer frequency to that, so plastic deformation is more accelerated and the material is uniformly deformed and the increment of the amount of compression, reduction of the force and energy which are required to work, miniaturization of the device, improvement of working accuracy, etc., are realized.

4. 发明专利

JPH06510A DEVICE FOR HORIZONTALLY SUPPORTING WORK ROLL AND ROLLING METHOD 失效
公开(公告)号：JPH06510A
公开(公告)日：1994-01-11
申请号：JP15784092
申请日：1992-06-17
申请人： HITACHI LTD
发明人： SHIMOGAMA HIRONORI , GOTO AKIRA , KAJIWARA TOSHIYUKI , MITSUI HIROMITSU , KOBAYASHI HIDEO , HORII KENJI
IPC分类号： B21B13/14 , B21B29/00
摘要： PURPOSE:To stably support work rolls and support rolls even in the case that not only variation in the diameter of the work roll but variation in the amount of offset between the work rolls and variations in the other rolling rolls in a device for horizontally supporting the work rolls of a rolling mill. CONSTITUTION:This device has the support rolls 5 with which the horizontal forces that act on the work rolls 1 are supported, supporting bearings 6 which are zigzag arranged in the axial direction and with which the support rolls are supported and supporting frames 7 with which these supporting bearings are supported and are made into such a structure as the supporting frames 7 are allowed to execute rectilinear motion with rectilinear driving devices 9 and rectilinear motion bearings 11 and turning movement with rotary fulcrums 10 and turning driving devices 12. In this way, in accordance with the variations in the diameters of the work rolls, support rolls and supporting bearings and variation in the amount of offset of the work roll, the supporting frames are moved so that the straight line which connects the axial center of the work roll and the axial center of the support roll is always passed through approximately the middle between the axial centers of the supporting bearings which are zigzag arranged.

5. 发明专利

JP2001040463A CONTINUOS HOT DIP METAL COATING DEVICE, AND ITS METHOD 失效
公开(公告)号：JP2001040463A
公开(公告)日：2001-02-13
申请号：JP21388099
申请日：1999-07-28
申请人： HITACHI LTD
发明人： YONEKURA TAKASHI , SHIMOGAMA HIRONORI , KANI YASUNORI
IPC分类号： C23C2/24
摘要： PROBLEM TO BE SOLVED: To improve the quality of a plated layer, and to provide a uniform plating thickness by suppressing the vibration and the contact of a steel strip in controlling the plating thickness making use of an alternating magnetic field generating coil. SOLUTION: A steel strip 10 is held by a pair of rolls 30A, 30B, and a pair of support rolls 95A, 95B. A molten metal bath 40 is formed between the rolls and the steel strip 10 above the rolls 30A, 30B, and the hot dip metal coating is continuously implemented on a surface of the upwardly moving steel strip 10. A plating thickness controlling means is an alternating magnetic field generating coil installed above the molten metal bath between the rolls 30A, 30B and the support rolls 95A, 95B, and frequency of the current charged in the alternating magnetic field generating coil is set to be higher than the specified multiple of the natural frequency of the steel strip, and the plating thickness is controlled by suppressing the contact or the vibration of the steel strip by the alternating magnetic field generating coil, and the molten metal bath and the alternating magnetic field generating coil are installed in a case filled with a non-oxidizing gas.

6. 发明专利

JP2000204459A CONTINUOUS HOT-DIPPING DEVICE 失效
公开(公告)号：JP2000204459A
公开(公告)日：2000-07-25
申请号：JP289999
申请日：1999-01-08
申请人： HITACHI LTD
发明人： SAITO YUKIO , SAKAI JUNJI , TAKAKURA YOSHIO , KANI YASUNORI , SHIMOGAMA HIRONORI , TAKIUCHI KIRA , SHIMOTAMURA OSAMU
IPC分类号： C23C2/00 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To prevent the corrosion of a roll shaft part with molten metal and to extend the service life of a roll by positioning the rotating shaft of the roll always to the outside of the molten metal though the barrel part surface of the plated roll is dipped into the molten metal and coating the roll surface with iron boride or iron silicate. SOLUTION: The barrel part of the plated roll 5 in a continuous hot-dipping device, is dipped into the molten metal 4 but the shaft part 8 and bearing part 9 of the roll 5 are positioned to the outside of the molten metal 4 so that the shaft part 8 and the bearing part 9 do not receive the corrosion with the molten metal 4. It is desirable that the molten metal 4 is stored by arranging a groove on the surface of the roll 5 and the excess quantities of the molten metal 4 stuck to both surfaces of a copper plate 1 are equalized to almost equalize the plated thicknesses after gas wiping. As a material of the roll 5, steel material is used, but in the case of galvanizing, the roll surface is coated with the iron-boride, and in the case of zinc-aluminum alloy plating or aluminum plating, this surface is coated with the iron-silicate layer to keep the corrosion resistance to the molten metal 4.

7. 发明专利

JPH09327752A THIS CAST SLAB CONTINUOUS CASTING MACHINE AND METHOD FOR CONTINUOUSLY CASTING THIN CAST SLAB 失效
公开(公告)号：JPH09327752A
公开(公告)日：1997-12-22
申请号：JP14545796
申请日：1996-06-07
申请人： HITACHI LTD
发明人： HORIUCHI HISAAKI , HIRANO SATOSHI , HORII KENJI , NISHINO TADASHI , SHIMOGAMA HIRONORI , ISONO MITSUHISA
IPC分类号： B22D11/04 , B22D11/059
摘要： PROBLEM TO BE SOLVED: To execute the stable casting for a long time by constituting a meniscus part of a short side of a mold with refractory, forming the refractory in the convex shape projecting toward a casting space side and gradually reducing the tickness of the projection in the drawing direction in the vertical direction. SOLUTION: In a continuous casting machine of a fixed oscillating mold type used for short side unsolidification contraction system, all of the long sides 3 are constituted with water cooled steel plate and the short sides of the mold has the upper contracting part constituted with the refractory 2. The short sides in the mold is divided into the contracting part widened at the upper part and narrowed at the lower part and a straight part. Further, the short side mold refractory has the convex shape projecting toward the casting space side near the meniscus part and the thickness of the projection is gradually reduced toward the case slab drawing direction in the vertical direction.

8. 发明专利

JPH09253799A CONTINUOUS CASTING APPARATUS AND METHOD THEREFOR 失效
公开(公告)号：JPH09253799A
公开(公告)日：1997-09-30
申请号：JP6969596
申请日：1996-03-26
申请人： HITACHI LTD
发明人： HIRANO SATOSHI , HORIUCHI HISAAKI , HORII KENJI , NISHINO TADASHI , SHIMOGAMA HIRONORI , ISONO MITSUHISA
IPC分类号： B22D11/04 , B22D11/055 , B22D11/059
摘要： PROBLEM TO BE SOLVED: To extend the service life of a mold and to reduce the manufacturing cost of the mold, in continuous casting of a low m.p. alloy. SOLUTION: This casting apparatus is constituted so as to continuously supply molten metal into the space of the mold formed of confronting long side mold walls 2 and confronting short side mold walls 1 and continuously draw shell solidified in the mold to continuously produce a cast slab 5. In this case, the short side mold is constituted of the part where the width of the short side mold wall 1 becomes narrow according to directing to the casting direction from the molten metal surface, and the part where the width of the short side mold wall 1 is constant. The round part (R) of the short side mold wall 1 is positioned at the upper part (the side near the molten metal surface) and the straight part (S) is positioned at the lower part (the side near the outlet of the mold).

9. 发明专利

JPH03219104A ROTARY VALVE 失效
公开(公告)号：JPH03219104A
公开(公告)日：1991-09-26
申请号：JP1061990
申请日：1990-01-22
申请人： HITACHI LTD
发明人： NOGAMI TADAHIKO , SHUDO KATSUHARU , NAKAMURA ICHIRO , MAENO ICHIRO , SHIMOGAMA HIRONORI
IPC分类号： F15B13/044 , F16K11/085 , F16K31/04
摘要： PURPOSE:To enhance responsiveness in reduced size and weight by a small drive force by providing cylindrical holes in one of casings at the inner circumferential face each having the same size as the outer peripheral face of a valve body and the valve body, and sleeves coaxial with the cylindrical holes and each having an outer diameter equal to an inner diameter of the hole as well as passageways separated by this sleeves in the other, and forming control orifices of the inner edge of the cylindrical holes, the outer edges of the sleeves and both ends of the passageways. CONSTITUTION:A valve body 1 is rotatably supported at the columnar slide face thereof by casings 2, 3. Cylindrical holes 4, 5 opened in the outer peripheral surface of the valve body 1 are formed, and sleeves 6, 7 each having an outer diameter equal to the inner diameter of each cylindrical hole are disposed in the valve body 1 coaxially with the holes 4, 5. Passageways 8, 9 are formed in such a manner as to be separated from each other by the sleeves 6, 7. Control ports 10, 11 are disposed in the inner diameter portions of the sleeves 6, 7, respectively; and supply and exhaust ports 12, 13, in the passageways 8, 9, respectively. Therefore, the area of the passageways inside the valve body can become sufficiently larger than those of the control orifices 10, 11 while an inertial moment becomes small with high responsiveness a reduced size and weight by a small drive force.

10. 发明专利

JPH11172400A CONTINUOUS HOT DIP COATING DEVICE AND CONTINUOUS HOT DIP COATING METHOD 失效
公开(公告)号：JPH11172400A
公开(公告)日：1999-06-29
申请号：JP34495197
申请日：1997-12-15
申请人： HITACHI LTD
发明人： YONEKURA TAKASHI , SHIMOGAMA HIRONORI , KANI YASUNORI
IPC分类号： C23C2/24 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a continuous hot dip coating device capable of improving the quality of plating layers and obtaining a uniform plating thickness and a continuous hot dip coating method. SOLUTION: A steel strip 10 is held between a pair of rolls 30A, 30B. A molten metal bath is formed between these rolls and the steel strip 10 and the surfaces of the steel strip 10 moving upward are continuously subjected to hot dip coating. Alternating magnetic field generating coils 32A, 32B are arranged in the rolls 30A, 30B to generate the force to suppress the force to lift the molten metal by the steel strip 10, by which the plating thickness is controlled.

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