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1. 发明专利

JPH05124810A STARTING MATERIAL FOR MULLITE SINTERED COMPACT, MULLITE SINTERED COMPACT AND ITS PRODUCTION 失效
公开(公告)号：JPH05124810A
公开(公告)日：1993-05-21
申请号：JP28814691
申请日：1991-11-02
申请人： CHICHIBU CEMENT KK
发明人： NAKAI ZENJIRO , EMU JII EMU YUU ISUMAIRU , OHIRA HIROYUKI
IPC分类号： C01B33/26 , C04B35/18
摘要： PURPOSE:To provide a mullite sintered compact having high creep resistance without reducing the high strength of a mullite sintered compact at high temp. CONSTITUTION:This starting material for a mullite sintered compact contains >=99.5wt.%, in total, of Al2O3 and SiO2 in (71.2-72.5):(28.8-27.5) weight ratio of Al2O3:SiO2 and has

2. 发明专利

JPH0475774A PAWL FOR CARRYING BASE PLATE IN SOLDERING DEVICE 失效
公开(公告)号：JPH0475774A
公开(公告)日：1992-03-10
申请号：JP18530390
申请日：1990-07-16
申请人： CHICHIBU CEMENT KK
发明人： YAMAMOTO YOSHINORI , OHIRA HIROYUKI
IPC分类号： B65H5/14 , B23K3/00 , H05K3/34
摘要： PURPOSE:To improve workability and durability by constituting a pawl for carrying a base plate by using at least one kind of the materials selected from the group of mullite, zirconia, sialon, and silicon nitride. CONSTITUTION:The pawl for carrying the base plate is constituted of a ceramic resistant for thermal impact. The pawl constituted of a ceramic resistant for thermal impact. The pawl constituted of the mullite, zirconia, sialon, and silicon nitride is extremely excellent. The pawl for carrying the base plate is constituted of a stainless steel plate 1, the pawl 2 for carrying the base plate and a screw 3 for fixing the pawl 2 to the stainless steel plate 1. The pawl 2 is constituted by using high-purity mullite powder, shaping this powder to a prescribed shape and sintering the molding for the prescribed period of time at a prescribed temp. The product with which the production is easy in spite of complication in the pawl shape shape and solder hardly sticks to the pawl holding the circuit board at the time of transporting of the circuit board and which obviates the degradation in workability and has the high durability is obtd. in such a manner.

3. 发明专利

JPH04182209A CERAMIC CONVEYOR BELT 失效
公开(公告)号：JPH04182209A
公开(公告)日：1992-06-29
申请号：JP31134490
申请日：1990-11-19
申请人： CHICHIBU CEMENT KK
发明人： YUZAWA YUKIO , YAMAMOTO YOSHINORI , SHIBAZAKI NOBUYUKI , OHIRA HIROYUKI , YOSHIZANE TOSHIMASA
IPC分类号： B65G17/08 , B65G17/38
摘要： PURPOSE:To improve thermal resistance and chemical resistance of a conveyer belt by respectively providing a recessed part and a protruded part for engagement on edge parts in the front and the rear directions of a ceramic simple substance so that the ceramic simple substance can be engaged from its front of the plate surface or its rear, and by devising it possible to connect the ceramic simple substance with another by way of engagement of the recessed part and the protruded part. CONSTITUTION:A ceramic simple substance 1 is formed in a specified shape of alumina and others. Then, a protruded part 2 is protrusively provided on one of the edge parts of the simple substance 1 in the front and the rear directions and a pin hole 3 is provided. On the other edge, a recessed part 4 to which the protruded part 2 can be engaged is formed, and a hole 5 and a blind hole 6 are formed on both sides of the recessed part 4. Two of these ceramic simple substances 1 are connected to each other with a pin 7 by engaging the protruded part 2 and the recessed part 4 to each other so that they orthogonally match to each other as the hole 3 of the protruded part 2 of one of the simple substances 1 fits to the hole 5 of the recessed part 4 of the other. Thereafter, one of the simple substances 1 is positioned in the blind hole 6 of the other simple substance 1, turned by 90 deg. and made flat. This work is repeated sequentially and the simple substances 1 are connected and a conveyor belt is formed.

4. 发明专利

JPH04135655A MEMBER FOR GRINDER 失效
公开(公告)号：JPH04135655A
公开(公告)日：1992-05-11
申请号：JP25670690
申请日：1990-09-26
申请人： CHICHIBU CEMENT KK
发明人： YAMAMOTO YOSHINORI , NAKAI ZENJIRO , YOSHIZANE TOSHIMASA , OHIRA HIROYUKI , SHIBAZAKI NOBUYUKI
IPC分类号： B02C15/12 , B02C17/20
摘要： PURPOSE:To enhance mechanical strength and to reduce cracking due to shock by constituting the member for a grinder of a mullite-based sintered body contg. zirconia and regulating the bulk density thereof to at least specified value. CONSTITUTION:The member for a grinder is used which is constituted of a mullite-based sintered body contg. 15-35wt.% zirconia and has >=3.4g/cm bulk density. The component of mullite material after sintering is desirably regulated to >=97wt.% as the total amount of Al2O3 and SiO2. A content of zirconia in the mullite-based sintered body less than 15wt.% is unsuitable as a grinding ball because fracture toughness and density are small. Therefore it is important that the content of zirconia in the mullite-based sintered body be regulated to >=15wt.%. Reversly a content of zirconia in the mullite-based sintered body e.g. larger than 35wt.%, increases a microcrack in the structure of the sintered body and decreases strength and the same is often cracked by shock. Therefore the content of zirconia is regulated to

5. 发明专利

JPH0640536A CERAMIC CONVEYOR BELT 失效
公开(公告)号：JPH0640536A
公开(公告)日：1994-02-15
申请号：JP7667792
申请日：1992-03-31
申请人： CHICHIBU CEMENT KK
发明人： YUZAWA YUKIO , YAMAMOTO YOSHINORI , OHIRA HIROYUKI , YOSHIZANE TOSHIMASA , SHIBAZAKI NOBUYUKI
IPC分类号： B65G15/38 , B65G17/08 , F27D3/12
摘要： PURPOSE:To provide a conveyor belt excellent in heat resistance and chemical resistance, being rustproof, and having little decreased of strength at a high temperature by latching and connecting two kinds of ceramic conveyor parts bound integrally. CONSTITUTION:Ceramic is baked nearly into a well crib shape as the first conveyor belt part 1, and ceramic is baked into a columnar shape having hole sections 5a, 5b to match the end section shapes 2b, 3b of the front shaft section 1a and the rear shaft section 1b of the first conveyor belt part 1 as the second conveyor belt part 4. The second conveyor belt part 4 is tilted by 90 deg. and faced to the first conveyor belt part 1, the hole sections 5a, 5b of the second conveyor belt part 4 are coupled with the pins 2a, 2b of a part 2 and thrust, they are straightened at 180 deg., then the first and second conveyor belt parts 1, 4 are connected. A ceramic conveyor belt V is assembled when these actions are repeated, the disassembling work is made simple, and the repairing work can be quickly and easily performed when a part is broken.

6. 发明专利

JPH05105502A INJECTION MOLDING MATERIAL 失效
公开(公告)号：JPH05105502A
公开(公告)日：1993-04-27
申请号：JP27153691
申请日：1991-10-18
申请人： CHICHIBU CEMENT KK
发明人： OHIRA HIROYUKI , YAMAMOTO YOSHINORI , YOSHIZANE TOSHIMASA , SHIBAZAKI NOBUYUKI
IPC分类号： C04B35/00 , C04B35/632
摘要： PURPOSE:To obtain the subject material excellent in kneadability and fluidity, easy to degrease, also high in the mechanical strength of the sintered compacts therefrom by incorporating a binder resin with fine spherical ceramic powder having the mean size not greater than a specified value. CONSTITUTION:The objective injection molding material can be obtained by incorporating (A) spherical ceramic powder having

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