Roll having a hard envelope surface

Details Roll having a hard envelope surface Roll having a hard envelope surface

1987-02-03

1988-09-20

Echols, P. W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29110, B31B 3108

Patent

active

047715243

ABSTRACT:
To increase abrasion resistance, a cast-iron roll is given a carbidic running-surface layer which has a defined depth of at least 1 mm and a fine-grained structure whose cementite dendrites have a length of at most 100 .mu.m and a thickness of at most 20 .mu.m. The fine-grained structure is produced by remelt hardening of the outer surface of the roll.

REFERENCES:
patent: 3997370 (1976-12-01), Horvath, Jr. et al.
patent: 4165407 (1979-08-01), Endoh et al.
patent: 4546527 (1985-10-01), Fukuda et al.
patent: 4697320 (1987-10-01), Ishihara et al.
patent: 4721153 (1988-01-01), Sano et al.
patent: 4726417 (1988-02-01), Sano

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