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1. 发明专利

JPH06106309A STRUCTURE FOR CONNECTING NOZZLE FOR CASTING 失效
公开(公告)号：JPH06106309A
公开(公告)日：1994-04-19
申请号：JP25330492
申请日：1992-09-22
申请人： KUROSAKI REFRACTORIES CO
发明人： OTA SUEICHI , IMANAKA TATSUYA , MORIKAWA RYOICHI , KIMURA ATSUO , OOMORI SENJI
IPC分类号： B22D11/10
摘要： PURPOSE:To prevent suction of the outer air even in the case of repeatedly using by arranging a flexible annular member having a fitting hole to the end surface of a casting nozzle further bringing the outer peripheral surface of a connecting objective member into close contact with the inner surface of the fitting hole in the annular member and connecting. CONSTITUTION:The annular member 1 is a heat resistant packing composed of ceramic wool, resin and rubber, etc. This member is fixed by inserting on the upper end surface of a seal pipe 2 as a nozzle for casting through a metal case 3. In the annular member 1, the fitting hole 1a is arranged and this fitting hole 1a is formed at smaller than the outer diameter at the lower end of a lower nozzle 4. At the time of connecting the seal pipe 2 and the lower nozzle 4, the annular member 1 is deformed in the pushing direction and brought into close contact with the outer periphery at the lower end of the lower nozzle 4 to prevent the invasion of the air. Further, as the heat resistant seal material is not used to the joining surface between the seal pipe 2 and the lower nozzle 4, at the time of casting, the molten steel and the annular member 1 are not brought into direct contact, and even in the case of using for long term, it is no fear that this nozzle quality is deteriorated.

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