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1. 发明专利

JPH0885816A MANUFACTURE OF GAS BLOWING PLUG 失效
公开(公告)号：JPH0885816A
公开(公告)日：1996-04-02
申请号：JP25151794
申请日：1994-09-19
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： UCHIDA YASUYUKI , OGAWA KAZUMASA , YUMOTO TOSHIHIDE , OKAMOTO TAKESHI
IPC分类号： B22D1/00 , B28B21/04 , B28B23/00 , C21C7/072 , F27D3/16
摘要： PURPOSE: To easily and precisely manufacture a gas blowing plug in a short time by inserting a porous brick part connected to a gas supplying pipe into a molding flask and positioning the brick part through a center position setting jig abutting on the gas supplying pipe and the molding flask. CONSTITUTION: The porous brick part 2 is connected to the gas supplying pipe 3 and inserted into the molding flask 5. Successively, the outside part of the center position setting jig 6 is allowed to abut on the outer peripheral part of the molding flask 5 and also, the inside part thereof is allowed to abut on the outer peripheral part of the gas supplying pipe 3. This center position setting jig 6 has a stepped part 8 engaged with the outer peripheral part of the molding flask 5 on the outside part of the sectoral jig body 7 and has an arcuate part 9 fitted to the outer periphery of the gas supplying pipe 3 in the inside part thereof. By this constitution, the gas supplying pipe 3 is accurately positioned on the center of the molding flask 5. In this condition, the castable refractory 4 is supplied into the molding flask 5 and filled up around the porous brick part 2. By this method, the gas blowing plug for blowing stirring gas into molten metal is manufactured with the gas supplying pipe 3 accurately arranged at the center position.

2. 发明专利

JPH07195320A MANUFACTURE OF GAS BLOWING PLUG 失效
公开(公告)号：JPH07195320A
公开(公告)日：1995-08-01
申请号：JP34984693
申请日：1993-12-29
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： YUMOTO TOSHIHIDE , OGAWA KAZUMASA , ISHII HIROMASA , OKAMOTO TAKESHI
IPC分类号： B22D1/00 , B28B1/14 , B28B7/18 , B28B7/34 , C21C7/072 , F27D3/16
摘要： PURPOSE:To form a gas blowing hole of a gas blowing plug into a thin slit with a high precision. CONSTITUTION:A gas blowing plug 1 is formed in such a manner that a plastic sheet is stuck to side faces of an interior material 2 made of a close-grained refractory material having plate-like or bar-like or pillar-like shape and the periphery of the interior material 2 is covered with an exterior material 3 made of monolithic refractory. A plug body 6 made of the interior material 2 covered with the exterior material 3 is heated, and the thermoplastic sheet stuck to the interior material 2 is dissolved so as to form a slit 5 for blowing a required gas, so that a gas blowing plug which has durability and provides a required quantity of gas flow rate can be manufactured.

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