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1. 发明专利

JPS54107793A EDDY CURRENT FLAW DETECTOR FOR HOT BILLET 失效
公开(公告)号：JPS54107793A
公开(公告)日：1979-08-23
申请号：JP1413978
申请日：1978-02-13
申请人： NIPPON KOKAN KK , EDDIO CORP
发明人： SHIMADA KATSUHIKO , KOMINE ISAMU , AOI HISAYUKI , YAMADA MASAYOSHI
IPC分类号： B21B38/00 , G01N27/90

2. 发明专利

JPS56154256A PRODUCTION OF BOTTOMED HOLLOW STEEL INGOT 失效
公开(公告)号：JPS56154256A
公开(公告)日：1981-11-28
申请号：JP5698080
申请日：1980-04-28
申请人： NIPPON KOKAN KK
发明人： ISHIGURO MORIYUKI , TAMAOKI TOSHIO , YAMADA MASAYOSHI , ASANO NOBUNARI , MURAKAMI KATSUHIKO , SASAJIMA YASUTOSHI
IPC分类号： B22D7/04
摘要： PURPOSE:To produce thick-walled hollow pipes of blank material of cylindrical iron or steel products at high yields and high performance by suspending a core which permits gas cooling within a mold placed on a molding board, in a manner as to be prevented from floating by a weight, and casting molten steel by bottom pouring from the rising port of the molding board. CONSTITUTION:A mold 2 made of cast iron is placed on a molding board 1 having a rising port 12 for bottom charging, and a weight 4 is placed thereon by way of a centering and height adjusting ring 3 of a core 5. An outside cylinder 6 and inside cylinder 7 made of steel and a hollow core 5 contained with MgO type refractories 8 at the intermediate thereof are fixed to the weight 4 and these are so set that their leading ends come near the molding board. A plug 8 made of refractories is fitted to the leading end part of the core 5 and the outside surface thereof is covered with a cap made of steel. A gas, such as Ar or N for cooling is introduced through the gas guiding tube 11 provided in the core 5 and while cooling the core 5 by this gas, molten steel 14 is cast by bottom pouring through the rising port 12 of the molding board 1 up to the top end of the heat-insulating sleeve in the upper part of the mold, whereby the bottomed hollow steel ingot is produced at high yields of steel ingots.

3. 发明专利

JPS5940265B2 JPS5940265B2 - 失效
公开(公告)号：JPS5940265B2
公开(公告)日：1984-09-28
申请号：JP1413978
申请日：1978-02-13
申请人： Nippon Kokan Kk , Hara Denshi Sotsuki Kk
发明人： SHIMADA KATSUHIKO , KOMINE ISAMU , AOI HISAYUKI , YAMADA MASAYOSHI
IPC分类号： B21B38/00 , G01N27/90
CPC分类号： G01N27/9093 , B21B38/00 , G01N27/9013

4. 发明专利

JPS5441187A DEVICE FOR DETECTING SURFACE FLAW OF COLUMNAR OR CYLINDRICAL METAL 失效
公开(公告)号：JPS5441187A
公开(公告)日：1979-04-02
申请号：JP10719777
申请日：1977-09-08
申请人： NIPPON KOKAN KK
发明人： SHIMADA KATSUHIKO , KOMINE ISAMU , TANABE HIDEYA , TSUNOSAKI SHIYUUICHI , YAMADA MASAYOSHI , TAKAHASHI TSUGUO
IPC分类号： G01N27/82 , G01N27/90

5. 发明专利

JPS5728654A Manufacture of bottomed hollow steel ingot 失效
标题翻译：底部中空钢的制造
公开(公告)号：JPS5728654A
公开(公告)日：1982-02-16
申请号：JP10312480
申请日：1980-07-29
申请人： Nippon Kokan Kk
发明人： ISHIGURO MORIYUKI , ENDOU TAKESHI , ASANO NOBUNARI , YAMADA MASAYOSHI
IPC分类号： B22D7/04
摘要： PURPOSE: To cast hollow steel ingots with an excellent yield, by suspending with a pressure a hollow core composed of steel-made inner and outer cylinders whose front ends are closed, and an intermediate layer made of refractory materials in a bottom pouring mold, so that the front end part of the core is kept from the bottom of the mold, and by pouring the molten metal into the mold.
CONSTITUTION: A cast iron-made mold 3 is placed on a board 1 provided with a cross gate and a molten metal rising port, and a core 6 is attached to a weighted core supporting frame 5 and suspended in the mold 3. The core 6 is a hollow cylinder with a closed front end and contains a refractory material layer 8 in the space between a steel-made outer cylinder 7 and a steel-made inner cylinder 9, and, at the same time, the core 6 has a gas inducing tube 10 at the hollow part in the cylinder 9 for introducing a low temperature gas, such as nitrogen, etc., to cool the core 6 from the inside. When the molten metal is poured into the mold 3, the front end 6a and small cylindrical port of the side wall part 6b of the core 6 are melted by the molten metal, but a bottomed hollow steel ingot having a hole at the center can easily be manufactured because the inner cylinder 9 cooled and the refractory material layer 8 maintain their original shape.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：为了以优异的成品率铸造中空钢锭，通过在压力下悬挂由前端封闭的钢制内外缸和中间层构成的中空芯，以及在底浇注模具中由耐火材料制成的中间层，因此芯的前端部分保持在模具的底部，并将熔融金属倒入模具中。构成：将铸铁模具3放置在设置有十字闸门和熔融金属上升口的板1上，并且将芯6安装到加重的芯支撑框架5并悬挂在模具3中。芯部6 是具有封闭前端的中空圆柱体，并且在钢制外筒7和钢制内筒9之间的空间中包含耐火材料层8，并且同时，芯6具有气体诱导管10在气缸9中的中空部分，用于引入诸如氮气等的低温气体，以从内部冷却芯体6。当熔融金属注入模具3时，芯体6的侧壁部分6b的前端6a和小圆柱形端口被熔融金属熔化，但是在中心具有孔的有底的中空钢锭可容易地由于内筒9被冷却并且耐火材料层8保持原来的形状而被制造。

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