Grinding roll including wear resistant working surface
AssigneeKennametal Inc.
InventorsPrakash K. Mirchandani, Morris E. Chandler
Life of this patent
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Abstract
A grinding roll includes a core comprising an external surface, and at least one wear resistant article adapted for use as a working surface that is removably attached to the external surface of the core. The at least one wear resistant article comprises a metal matrix composite comprising a plurality of inorganic particles dispersed in a metal matrix material comprising one of a metal and a metal alloy, and a plurality of hard elements interspersed in the metal matrix composite. The wear resistance of the metal matrix composite is less than the wear resistance of the hard elements.
Claims11
A grinding roll for the comminution of granular materials, comprising:
- a cylindrical core comprising an external surface;
- and
- at least one wear resistant article adapted for use as a wear resistant working surface of the grinding roll, removably attached to the external surface of the cylindrical core, wherein the at least one wear resistant article comprises:
- a metal matrix composite comprising:
- a plurality of inorganic particles dispersed in a matrix material comprising at least one of a metal and a metal alloy;
- and
- a plurality of hard elements interspersed in the metal matrix composite in a predetermined pattern;
- wherein a wear resistance of the metal matrix composite is less than a wear resistance of the hard elements;
- and
- wherein the metal matrix composite preferentially wears away when the grinding roll is in use, thereby providing or preserving a gap between each of the plurality of hard elements at a surface of the article.
A grinding roll for the comminution of granular materials, comprising:
- a cylindrical core comprising an external surface;
- and
- at least one wear resistant article adapted for use as a wear resistant working surface of the grinding roll, removably attached to the external surface of the cylindrical core, wherein the at least one wear resistant article comprises:
- a metal matrix composite comprising:
- a plurality of inorganic particles dispersed in a matrix material comprising at least one of a metal and a metal alloy;
- and
- a plurality of hard elements interspersed in the metal matrix composite in a predetermined pattern, wherein one or more of the hard elements are formed of tool steel or sintered cemented carbide;
- wherein a wear resistance of the metal matrix composite is less than a wear resistance of the hard elements;
- and
- wherein the metal matrix composite preferentially wears away when the grinding roll is in use, thereby providing or preserving a gap between each of the plurality of hard elements at a surface of the article.
Dependencies are inferred from the claim text.