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71. 发明专利

JPS5428719A BLAST SMELTING METHOD IN OXYGEN CONVERTER 失效
公开(公告)号：JPS5428719A
公开(公告)日：1979-03-03
申请号：JP9522977
申请日：1977-08-09
申请人： KAWASAKI STEEL CO
发明人： SUZUKI KENICHIROU , NAKANISHI KIYOUJI , EJIMA AKIO
IPC分类号： C21C5/32 , C21C5/30

72. 发明专利

JPS544206A MEASURING METHOD OF FLOW RATE OF EXHAUST GAS BY ANALYZING EXHAUST GAS IN OXYGEN CONVERTER 失效
公开(公告)号：JPS544206A
公开(公告)日：1979-01-12
申请号：JP6881277
申请日：1977-06-13
申请人： KAWASAKI STEEL CO
发明人： NAKANISHI KIYOUJI , SUZUKI KENICHIROU , BETSUSHIYO NAGAYASU , EJIMA AKIO , OOHASHI ZENJI , SATOU KUNIHIRO
IPC分类号： C21C5/38 , C21C5/46 , F27D17/00

73. 发明专利

JPS53102212A METHOD OF SMELTING MOLTEN IRON 失效
公开(公告)号：JPS53102212A
公开(公告)日：1978-09-06
申请号：JP10985476
申请日：1976-09-16
申请人： KAWASAKI STEEL CO
发明人： FUJII TETSUYA , OGUCHI MASAO , TANBE YUUJIROU , EJIMA AKIO
IPC分类号： C21C1/00 , C21C7/00

74. 发明专利

JPS52127423A MARTENSITIC STAINLESS STEEL HAVING GOOD MACHINABILITY AND CORROSION RESISTANCE 失效
公开(公告)号：JPS52127423A
公开(公告)日：1977-10-26
申请号：JP4423976
申请日：1976-04-19
申请人： KAWASAKI STEEL CO , HONDA MOTOR CO LTD
发明人： EJIMA AKIO , OOSAWA JIYUN , YANO SHIUYA , NAKANISHI KIYOUJI , KAZUTSUCHI FUMIO , KAHARADA AKIRA , SADAYORI SADAO , KOBAYASHI MAKOTO
IPC分类号： C22C38/00 , C22C38/18

75. 发明专利

JPS525615A PROCESS FOR HIGHLY EFFICIENT VACUUM DECARBURIZATIOOF ALLOY STEEL 失效
公开(公告)号：JPS525615A
公开(公告)日：1977-01-17
申请号：JP8090775
申请日：1975-07-02
申请人： KAWASAKI STEEL CO
发明人： EJIMA AKIO , OGUCHI MASAO , FUJII TETSUYA , IIDA YOSHIHARU , SHIMAZAKI YOSHINAO , UEDA NORIHIRO
IPC分类号： C21C7/10
摘要： PURPOSE:Process for highly efficient vacuum decarburization of chromium steel with small loss of chromium by oxidation.

76. 发明专利

JPS525614A PRODUCTION PROCESS OF STEEL OF EXTREMELY LOW CARBOCONTENT 失效
公开(公告)号：JPS525614A
公开(公告)日：1977-01-17
申请号：JP8090675
申请日：1975-07-02
申请人： KAWASAKI STEEL CO
发明人： EJIMA AKIO , OGUCHI MASAO , FUJII TETSUYA , IIDA YOSHIHARU , SHIMAZAKI YOSHINAO , UEDA NORIHIRO
IPC分类号： C21C7/10
摘要： PURPOSE:Process for producing steel of extremely low carbon content efficiently by decarburizing at reduced pressure a low carbon steel of carbon content under 0.1%.

77. 发明专利

JPH0318538B2 失效
公开(公告)号：JPH0318538B2
公开(公告)日：1991-03-12
申请号：JP9804086
申请日：1986-04-30
申请人： KAWASAKI STEEL CO
发明人： KINOSHITA KATSUO , HOSOYA KOJI , MURATA KENJI , OGUCHI MASAO , EJIMA AKIO
IPC分类号： B22D11/10 , B22D11/103 , B22D11/114 , B22D11/115

78. 发明专利

JPS6297709A METHOD FOR DETERMINING ROLLING CONDITION FOR CROSS HELICAL ROLLING MILL 失效
公开(公告)号：JPS6297709A
公开(公告)日：1987-05-07
申请号：JP25324586
申请日：1986-10-24
申请人： KAWASAKI STEEL CO
发明人： TOGASHI FUSAO , SAYAMA YASUHIRO , EJIMA AKIO , NAKAGAWA KICHIZAEMON , ABE HIDEO , KANARI SHOHEI
IPC分类号： B21B37/00 , B21B19/04 , B21B37/78
摘要： PURPOSE:To easily determine adequate and correct rolling conditions by selecting the equation of the conditions for preventing the generation of a defective bite and tail clogging as well as the equation of the conditions for preventing the rupture of a tail end in the stage of ultrathin wall piercing. CONSTITUTION:The equation I of the conditions for preventing the generation of the defective bite and tail clogging and the equation II of the conditions for preventing the rupture of the tail end in the stage of ultrathin wall piercing with a cross helical rolling mill for piercing and drawing a hollow rolling stock pipe by rolling rolls. The range where the rolling to satisfy the conditions to decrease the generation of thickness deviation is possible is selected and the rolling conditions including the diameter of a plug, roll gap, forward slip of the plug, guide shoe gap, etc., are so determined that the rolling conditions are brought to approximately the center of the rollable range. Here, L , DP , LP , E , H , t1 are respectively the forward slip of the plug with respect to the diameter of the rolling stock pipe, diameter, effective rolling length, roll gap, guide shoe gap, and the wall thickness ratio of the rolling stock pipe. (a) and (b) are coeffts. which depend slightly on the shape of tools (rolls, plug, guide shoes), the steel kind of the rolling stock pipe, rolling conditions, etc.

79. 发明专利

JPS6043805B2 JPS6043805B2 - 失效
公开(公告)号：JPS6043805B2
公开(公告)日：1985-09-30
申请号：JP11954080
申请日：1980-08-29
申请人： Kawasaki Steel Co
发明人： IMAE TOSHIO , EJIMA AKIO , SAKURADA KAZUYUKI
IPC分类号： B21B17/14 , B21B37/00 , B21B37/16 , B21B37/78
CPC分类号： B21B37/78 , B21B17/14

80. 发明专利

JPS6035409B2 失效
公开(公告)号：JPS6035409B2
公开(公告)日：1985-08-14
申请号：JP555278
申请日：1978-01-21
申请人： KAWASAKI STEEL CO
发明人： SUZUKI KENICHIRO , NAKANISHI KYOJI , NAKAMURA HIDEO , EJIMA AKIO
IPC分类号： C21C5/32 , C21C5/36 , C21C5/46 , G01N25/28

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