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1. 发明专利

JPH06288684A ULTRAHIGH TEMPERATURE TESTING OR TREATING METHOD 失效
公开(公告)号：JPH06288684A
公开(公告)日：1994-10-18
申请号：JP12510292
申请日：1992-05-18
申请人： SHINAGAWA REFRACTORIES CO
发明人： ARASHI HARUO , ASAMI HAJIME , MORIWAKI MASAHIRO
IPC分类号： F27B17/02 , F27D11/02 , G01N3/00 , G01N3/18
摘要： PURPOSE:To conduct a treatment such as test to measure various physical properties, weld or hot press at an ultrahigh temperature in an oxidative atmosphere by using an ultrahigh temperature electric resistance furnace having a hollow cylindrical zirconia resistor heat generator. CONSTITUTION:A hollow cylindrical resistor heat generator 1 normally uses a zirconia heat generator and has a terminal 3 which has a predetermined length and thick diameters at both ends of the generator 2 having a small diameter at a center. In order to support the generator 1, upper and lower pipelike refractory materials 5 are provided, and leads 4 are buried therein. A zirconia cylindrical refractory material 6 and an alumina cylindrical refractory material 7 are sequentially disposed to surround the generator 1. In order to alleviate a thermal load to be applied to the material 6 and to prevent a ground fault from the generator 1, a space 8 is provided between the generator 1 and the material 6, and a preheating heater 9 is provided on a surface of the material 7. Vertically penetrating spaces 12 are formed in the generator 1 and the materials 5, a sample, etc., is inserted to be disposed in an ultrahigh temperature heating space 13 near a heat generating part 2.

2. 发明专利

JPH0566093A ULTRAHIGH TEMPERATURE ELECTRIC RESISTANCE FURNACE 失效
公开(公告)号：JPH0566093A
公开(公告)日：1993-03-19
申请号：JP22618391
申请日：1991-09-05
申请人： SHINAGAWA REFRACTORIES CO
发明人： ARASHI HARUO , TABATA KATSUHIRO , ASAMI HAJIME , SAEKI TSUNENOBU
IPC分类号： F27D11/02
摘要： PURPOSE:To enhance thermal efficiency by supporting uprightly a heat generation section capable of heating treated articles internally and a hollow cylinder type resistor heat generation section with pipe-shaped refractories and installing a heat generator preheating device and protection cylinder-shaped refractories in their outside. CONSTITUTION:A hollow cylinder-shaped heat generator 1 is provided with a heat generation section 2 with a small cross sectional area in the center and a terminal section 3 with a larger cross sectional area on both sides. The inner diameters of the heat generation section 2 and the terminal section 3 are large enough to heat the treated articles inside. There are also provided pipe-shaped refractories 5 which support the generator 1 in an upright manner where cylinder-shaped refractories 6 and 7 are consecutively laid out outside in such a fashion that they may envelop the heat generator. On the surface of the cylinder-shaped refractories there is provided a preheater 9 so as to preheat the heat generator 1. The refractories 7 protect the heater 9. This construction makes it possible to enhance the thermal efficiency and reduce the amount of electricity used.

3. 发明专利

JPH06287060A ELECTRICALLY CONDUCTIVE CERAMIC COMPOSITE HEAT-RESISTANT MATERIAL COMPOSITION 失效
公开(公告)号：JPH06287060A
公开(公告)日：1994-10-11
申请号：JP11770592
申请日：1992-05-11
申请人： SHINAGAWA REFRACTORIES CO
发明人： ARASHI HARUO , ASAMI HAJIME , MORIWAKI MASAHIRO
IPC分类号： C04B35/48 , C04B35/50 , H01B1/08 , H01M4/86
摘要： PURPOSE:To provide an electrically conductive ceramic composite heat-resistant material composition prevented from deterioration in its sintering, high in electrical conductivity at lower and medium temperatures as well as at elevated temperatures. CONSTITUTION:The composition consisting of lanthanum mangatite composed of (A) La1-xCaxMnO3 (0.05

4. 发明专利

JPH06122585A METHOD FOR GROWING SINGLE CRYSTAL 失效
公开(公告)号：JPH06122585A
公开(公告)日：1994-05-06
申请号：JP27615592
申请日：1992-10-14
申请人： SHINAGAWA REFRACTORIES CO
发明人： ARASHI HARUO , ASAMI HAJIME , MORIWAKI MASAHIRO
IPC分类号： C30B13/16 , C30B13/32 , C30B29/16 , H05B3/14 , H05B3/62
摘要： PURPOSE:To obtain a single crystal having a proper temperature distribution of a melting zone without any defect by growing the single crystal in the interior of an ultrahigh-temperature electric resistance furnace equipped with a hollow cylindrical type zirconia heating element. CONSTITUTION:Vertically movable and rotatable shafts 16 and 16' are installed in the interior of a hollow cylindrical type zirconia heating element 1 provided in an ultrahigh-temperature electric resistance furnace. Rodlike single crystals 17 and 17' are inserted from the upper and lower parts into the shafts 16 and 16'. The ends of the single crystals 17 and 17' in the upper and lower parts are brought into contact in an ultrahigh-temperature heating space 13 of the heating element 1 and a current is passed through the heating element 1 while rotating the upper single crystal 17 at 0.1-100r.p.m. and the lower single crystal 17' at 0-100r.p.m. in the mutual opposite directions. Thereby, a melting zone 18 is heated to grow the objective single crystal.

5. 发明专利

JP2541726B2 失效
公开(公告)号：JP2541726B2
公开(公告)日：1996-10-09
申请号：JP11770592
申请日：1992-05-11
申请人： SHINAGAWA REFRACTORIES CO
发明人： ARASHI HARUO , ASAMI HAJIME , MORIWAKI MASAHIRO
IPC分类号： C04B35/48 , C04B35/50 , H01B1/08 , H01M4/86

6. 发明专利

JPH09245941A HEATING SUBSTANCE OF ZIRCONIA 失效
公开(公告)号：JPH09245941A
公开(公告)日：1997-09-19
申请号：JP5005996
申请日：1996-03-07
申请人： SHINAGAWA REFRACTORIES CO
发明人： ARASHI HARUO , FUJII YOJI , MORIWAKI MASAHIRO , NOBUHARA SEIJI
IPC分类号： H05B3/14
摘要： PROBLEM TO BE SOLVED: To make constant the internal temp. distribution and prolong the lifetime by shaping the end face of a terminal part of a heating element for a high temp. furnace in such a way as enclosing a part of a temp. running part, and suppressing heat radiation from the heat running part. SOLUTION: A heating part 22 having circular section and terminal parts 23 are made of ZrO2 material manufactured from zirconia fiber, etc., in a single piece structure where a circular hollow part 24 penetrates the inside so that a heating element 21 is formed. A lead of platinum is attached to each terminal part 23 and current is fed so that a temp. of 2000-2300 deg.C is generated in the hollow 24, and thereby a sample or a material to be treated is heated. A flange 25 enclosing a part of the heating part 22 is furnished on the periphery of that end face of the terminal part 23 which lies on the side with the heating part 22. The length of the flange 24 should be 20-95% of the heating part 22 while the inside diameter should be 6mm or more greater than the outside diameter of the part 22. Thereby heat radiation from the part 22 is shut off, and dispersion of the internal temp. distribution is lessened.

7. 发明专利

JPH07161454A ZIRCONIA HEAT GENERATING STRUCTURE BODY 失效
公开(公告)号：JPH07161454A
公开(公告)日：1995-06-23
申请号：JP30830993
申请日：1993-12-08
申请人： SHINAGAWA REFRACTORIES CO
发明人： ARASHI HARUO , ASAMI HAJIME , MORIWAKI MASAHIRO
IPC分类号： H05B3/14
摘要： PURPOSE:To unify temperature distribution at the time of heating a platelike long-size specimen by forming a hollow part, piercing the whole,length of a heating element having a circular cross-section shape terminal part on both the ends of a rectangular cross-section shape heating element, into a rectangular cross-section shape. CONSTITUTION:For example, element material, composed of 50wt. parts of yttria stabilizing zirconia powder having a mean diameter of 1-0.3mum, 50wt. parts of yttria stabilizing zirconia powder having a particle diameter of 0.3mm or less, 100wt. parts of yttria stabilizing zirconia fiber having a mean diameter of 5mum and a mean length of 20-30mm, 5wt. parts of methyl cellulose, and 70wt. parts of water, is sintered at 1800 deg.C to form an exothermic part 31, a terminal part 32, and a hollow part 34. The outer diameter of the terminal part 32 is set within a range of 1.2-3 to the diagonal length of the hollow part 34. The actual cross-section area excluding the hollow part 34 of the terminal part 32 is set within a 3-10 times range to the actual cross-section area of the exothermic part 31. The exothermic part 31 and the terminal part 32 can be separately formed to be sticked by metyl cellulose etc.

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