Method for wear-resistant compound roll manufacture

Details Method for wear-resistant compound roll manufacture Method for wear-resistant compound roll manufacture

1992-03-24

1993-07-06

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

148542, 148543, 148324, 298953, 492 58, 492 59, C22C 3812

Patent

active

052250075

ABSTRACT:
The wear-resistant compound roll is constituted by a shell portion made of an iron-base alloy having the composition consisting essentially of 1.0-3.5 weight % of C, 3.0 weight % or less of Si, 1.5 weight % or less of Mn, 2-10 weight % of Cr, 9 weight % or less of Mo, 20 weight % or less of W, 2-15 weight % of V, 0.08 weight % or less of P, 0.06 weight % or less of S, 300 ppm or less of B, the balance being substantially Fe and inevitable impurities, and a shaft portion made of steel. The iron-base alloy of the shell portion has a structure containing by an area ratio 5-30 % of granular carbides and 5 % or less of non-granular carbides, an alloy matrix of the shell portion having a Vickers hardness (Hv) of 550 or more. This compound roll has excellent wear resistance and resistance to surface roughening.

REFERENCES:
patent: 3909252 (1975-09-01), Kuriyama et al.
patent: 3929523 (1975-12-01), Kinoshi et al.
patent: 4721153 (1988-01-01), Sano et al.
patent: 4726417 (1988-02-01), Sano
patent: 4958422 (1990-09-01), Oshima et al.
patent: 5081760 (1992-01-01), Kikuhara et al.
Patent Abstracts of Japan, vol. 12, No. 358, Sep. 26, 1988, JP-A-63-114937.
Patent Abstracts of Japan, vol. 13, No. 79, Feb. 22, 1989, JP-A-63-266043.

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