Highly abrasive resistant material and grinding roll surfaced th

Details Highly abrasive resistant material and grinding roll surfaced th Highly abrasive resistant material and grinding roll surfaced th

1985-02-19

1986-08-12

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Repairing

2940218, 295271, 295273, 241293, 75126B, B23P 700, B23P 1518

Patent

active

046047816

ABSTRACT:
An alloy characterized by its highly abrasive resistant qualities which render it particularly suitable for use as the material from which to fabricate the external surface of a grinding, i.e., pulverizer, roll (18) of the type that is designed to be employed in a bowl mill (10) so as to be operative therein for purposes of effecting the pulverization of a material such as coal through the coaction of the grinding roll (18) with another surface (14) with which the bowl mill (10) is provided for this purpose. The subject alloy which is capable of being cast or applied to the grinding roll (18) in the form of a weld overlay comprises, by weight percentages, 4.0-6.0% Carbon; 3.0-14.0% Manganese; 1.0-2.5% Silicon; 15.0-30.0% Chromium; and 4.0-6.0% Molybdenum; with 0.5-2.0% Boron being added thereto, the balance being iron and incidental impurities.

REFERENCES:
patent: 3847599 (1974-11-01), Hartline, III
patent: 4389767 (1983-01-01), Burbach

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