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91. 发明专利

JPH0849046A RARE EARTH/IRON MAGNETOSTRICTION MATERIAL AND ITS PRODUCTION 失效
公开(公告)号：JPH0849046A
公开(公告)日：1996-02-20
申请号：JP12628095
申请日：1995-05-25
申请人： KOREA ADVANCED INST SCI & TECH
发明人： KIYOU JITSUKIYUU , RO TAIKAN , KIN KICHIYUU , HAYASHI SOUKOU , KIN SOUROKU
IPC分类号： B22D11/06 , C22C33/06 , C22C38/00 , H01L41/20

92. 发明专利

JPH07300607A METHOD FOR MELTING CAST IRON AND CARBURIZING UNIT 失效
公开(公告)号：JPH07300607A
公开(公告)日：1995-11-14
申请号：JP9018894
申请日：1994-04-27
申请人： TOYODA AUTOMATIC LOOM WORKS , TOYOTA MOTOR CORP , TEISAN KK , NANIWA ROKI KENKYUSHO KK
发明人： HIRANO HARUYOSHI , HIRAI HIDETOSHI , KAMIYA YUJI , KOBAYASHI HIROSHI , SHIRAKAWA HIROICHI , KIZAKI TSUTOMU , OKADA YUJI , TAKEUCHI YASUO , TSURUOKA HIROYUKI , TAKAHANE MINORU , TAKIMOTO YUTAKA , MURATA HIROTOSHI
IPC分类号： C21C1/08 , C22C33/06
摘要： PURPOSE:To efficiently utilize a recarburizer as a carbon source for cast iron without oxidizing and scattering by using a ferrous container filled with the recarburizer as the carburizing unit used at the time of producing the cast iron. CONSTITUTION:At the time of producing the cast iron by using pig iron and iron scrap, such as pig scrap, steel scrap, return scrap, and powdery and granular material of graphite and carbon quality such as pitch coke and petroleum coke as the recarburizer, a cartridge type carburizing unit 1 which the recarburizer 1b is filled into the iron-made container 1a such as steel pipe and the both end parts thereof is sealed is used. The carburizing unit is charged into a burner-type rotary furnace together with ferrous raw material such as pig iron and steel scrap, and the ferrous raw material is melted by heating with combustion flame of the burner and also the steel pipe 1a of the container for carburizing unit 1 is melted, and the recarburizer 1b in the inner part is immediately absorbed into the molten iron raw material to produce the molten cast iron carburizing to the prescribed quantity. As the powdery and granular recarburizer is not added as the single material but added a the carburizing unit in the furnace, the powdery and granular recarburizer can efficiently be utilized without loss due to the oxidation and the scattering.

93. 发明专利

JPH07258790A PRODUCTION OF STEEL FOR HIGH HEAT INPUT WELDING GOOD IN TOUGHNESS IN WELD HEATAFFECTED-ZONE 失效
公开(公告)号：JPH07258790A
公开(公告)日：1995-10-09
申请号：JP5380894
申请日：1994-03-24
申请人： NIPPON STEEL CORP
发明人： ITO AKIRA , ISHIKAWA TADASHI , YANAGI HIDEKI
IPC分类号： C22C33/06 , C22C38/00 , C22C38/06 , C22C38/54
摘要： PURPOSE:To produce a steel for high heat input welding good in toughness in the weld heataffected-zone without adding any special elements such as Ti at the time of smelting molten steel contg. specified amounts of C, Si, Mn, P, S and Al by deoxidizing the molten steel with Mn and Si, adding Al thereto and executing casting and rolling. CONSTITUTION:Molten steel contg., by weight, 0.03 to 0.20% C,

94. 发明专利

JPH0781175B2 失效
公开(公告)号：JPH0781175B2
公开(公告)日：1995-08-30
申请号：JP1868191
申请日：1991-02-12
IPC分类号： B21J5/00 , C21C7/06 , C21C7/10 , C22C33/00 , C22C33/06 , C22C38/00 , C22C38/28

95. 发明专利

JPH0742495B2 失效
公开(公告)号：JPH0742495B2
公开(公告)日：1995-05-10
申请号：JP24856085
申请日：1985-11-06
IPC分类号： C21C7/00 , C21C7/10 , C22C33/06

96. 发明专利

JPH05311315A 失效
公开(公告)号：JPH05311315A
公开(公告)日：1993-11-22
申请号：JP11345692
申请日：1992-05-06
申请人： NIPPON STEEL CORP , NIPPON ITSUTORIUMU KK
发明人： YAMANAKA MIKIO , FUKAYA MASUHIRO , NORO HIROMI
IPC分类号： C22C33/06
摘要： PURPOSE:To add rare earth elements to a molten alloy extremely safely in a high yield by coating an alloy wire consisting of rare earth elements and Al with a carbon steel and then inserting the wire into a molten Fe-Cr-Al alloy. CONSTITUTION:The wire or rod of alloy consisting of one or >=2 kinds among rare earth elements (Sc, Y, and lanthanoide series elements) and Al (for which the content of rare earth elements is about 1-9 atomic% to Al content) is coated with carbon steel or stainless steel. The alloy wire or rod is inserted into a molten Fe-Cr-Al alloy to add the rare earth elements to the molten metal. By this method, the rare earth elements can be added extremely safely to the molten Fe-Cr-Al alloy without causing the scattering and the deterioration of slag in a high addition yield.

97. 发明专利

JPH0255499B2 失效
公开(公告)号：JPH0255499B2
公开(公告)日：1990-11-27
申请号：JP14878782
申请日：1982-08-27
申请人： KAWASAKI STEEL CO
发明人： HAMADA HISAO , TSUCHITANI NOBUO , ITO ISAO , INATANI TOSHIHIRO , TAKADA SHIKO , KADOTO MITSUO , KOITABASHI HISAMITSU , KATAYAMA EIJI
IPC分类号： C22C35/00 , C21C7/00 , C22C33/06 , C22C45/02

98. 发明专利

JPS63262445A PRODUCTION OF BORON CONTAINING BASE ALLOY 失效
公开(公告)号：JPS63262445A
公开(公告)日：1988-10-28
申请号：JP9319787
申请日：1987-04-17
申请人： JAPAN METALS & CHEM CO LTD
发明人： SUZUKI KUNITERU , SASAI KOUJI , FUJINUMA TATSUHIKO
IPC分类号： C22C33/04 , C22C33/06
摘要： PURPOSE:To produce the titled alloy contg. extremely less contents of impurities by regulating the amt. of boron oxide to the specific ratio for a reducing agent at the time of adding the boron oxide as well as the reducing agent to an iron or alloy molten metal to produce the boron contg. based alloy. CONSTITUTION:The iron such as pig iron, pure ion, etc., or the iron alloy in which the elements such as Ni, Cr, Co, Si, etc., are added to said iron is preliminarily melted in a melting furnace and the mixture of specific ratios of boron oxide and reducing agent is added thereto. The born oxide is therefore reduce by the reducing agent on the surface of the molten metal bath and is turned into metallic boron to melt into the molten metal. At this time, the amt. of boron oxide to be added to the molten metal is regulated to >=1.2 times the theoretical reducing equiv. for the reducing agent. In this way, the titled alloy contg. less contents of impurities is obtd. and the boron contg. based alloy which is usable for an amorphous alloy, high capacity magnet, etc, is obtd. at low cost by simple process.

99. 发明专利

JPS61195953A PURIFYING METHOD OF FERROBORON 失效
公开(公告)号：JPS61195953A
公开(公告)日：1986-08-30
申请号：JP3530085
申请日：1985-02-26
申请人： JAPAN METALS & CHEM CO LTD
发明人： SUZUKI KUNITERU , KIMOTO YOSHIO , UOTANI SUSUMU , KIMURA YOSHIYUKI , OKU KOICHI
IPC分类号： C22C33/06
摘要： PURPOSE:To manufacture Fe-B contg. small quantities of impurity and inclusion, by feeding cold charge of refractory on molten Fe-B, taking out molten slag contg. impurity while adhering it to cold charge, or further adding flux having a specified compsn., or blowing air, O2, Cl thereto. CONSTITUTION:To surface of molten Fe-B contg. large quantities of C, Al, nonmetallic inclusion manufactured by electric furnace or thermit process, cold charge of refractory such as silica sand, silica rock granule, quick lime, MgO clinker is added singly by about 1-8% weight of Fe-B. Impurities such as C, Al on Fe-B surface are adhered to refractory cold charge, to take out them before being melted. In this case, Fe-B is held at the m.p. - 1,680 deg.C, and flux of B2O3 or that in which at least one kind among oxides of Si, Fe, Mg, Ca, Al, Na, K, Ba are added to B2O3 is added, air, oxygen, chlorine are blown to oxidize, chloridize Al, C, etc. in molten Fe-B, and these are floated up as nonmetallic inclusions, adhered to refractory cold charge and removed to purify ferroboron.

100. 发明专利

JPS5952926B2 失效
公开(公告)号：JPS5952926B2
公开(公告)日：1984-12-22
申请号：JP2911880
申请日：1980-03-10
申请人： JAPAN STEEL WORKS LTD
发明人： KITAMURA KAZUO , IWANAMI YOSHUKI , FUNAZAKI MITSUNORI , TAKENOCHI TOMOO
IPC分类号： C21C7/00 , C21C7/064 , C22C33/04 , C22C33/06

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