JPS5586666A - Production of dissimilar diameter composite roll - Google Patents

Abstract

PURPOSE: To produce the captioned superior roll surely and easily by inserting a plurality of sleeves of different inside diameters in series into the cylindrical inside surface of an outside chiller and performing centrifugal casting by the tripple molds inserted with a barrel frame of dissimilar cylindrical form on the inside surface thereof.

CONSTITUTION: Sleeves 4, 5 are inserted into the cylindrical inside surface of an outside chiller 3. Also, a dissimilar diameter cylindrical barrel frame 10 to be inserted in close contact with the inside diametral surfaces 4a, 5a of the sleeves 4, 5 are inserted therein, after which sand molds 6, 6 for forming the neck parts of the roll are incorporated to both ends of the outside chiller 3 to form tripple molds. The outside chiller 3 of these tripple molds is set on rotary rollers 7, 8 and is rotated. At the same time, outside shell molten metal is poured through a feed spout 9. After the formation of the outside shell layer 8, inside shell layer molten metal is poured in succession, whereby the dissimilar diameter composite roll integrated with the outside shell layer 8 and inside shell layer is produced. This roll is qualitatively and economically superior.

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