Kabushiki Kaisha Kobe Seiko Sho

Katsuhiko Honma

Hiroshi Okada

Shinichi Harada

Tsuneo Tatsuno

Shigeru Matsushita

Hiroshi Toyoda

A guide roll particularly suitable for conveying workpieces of high temperature, which: includes a steel core shaft internally provided with a cooling water passage along the axis thereof; a ceramic sleeve covering the circumference of the core shaft and constituted by a plurality of separable annular ceramic segments loosely fitted on and along the length of the core shaft; and fixing members for holding the respective annular ceramic in axially abutted state on the core shaft.

Guide roll

A method for producing a high strength sintered silicon carbide, the method comprising: molding a mixture of silicon carbide powder and a sintering aid into a green compact of a predetermined shape: preliminarily sintering the green compact to obtain a preliminarily sintered compact having a relative density higher than 80%; charging the preliminarily sintered compact in a HIP equipment without using a capsule; and subject the preliminarily sintered compact to a HIP treatment in a high-temperature and high-pressure N.sub.2 gas atmosphere maintaining a pressure higher than 500 atms and a temperature in the range of 1400.degree.-2300.degree. C.

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Akashi, Japan

Katsuhiko Honma