Refining element and method of manufacturing same

Details Refining element and method of manufacturing same Refining element and method of manufacturing same

D - Textiles, Paper

21

D

D21D 1/30 (2006.01)

Patent

CA 2064780

2064780 9102841 PCTABS00003 A refiner element (10) for the refining of fibrous material is provided with a comminuting surface of which at least a portion comprises an abrasive surface. The method of forming the refiner element (10) comprises casting a metal substrate (20) having a frontal surface (22), melting a relatively thin layer of the metal substrate on the frontal surface thereof to form a molten pool in the comminuting surface over the region thereof on which an abrasive surface is desired, depositing an abrasive material (38) into the molten pool formed in the metal comminuting surface (22) of the refiner element (10), and allowing the molten metal pool into which the abrasive material (38) has been deposited to solidify whereby the particles of abrasive material (38) are strongly bonded into the metal surface of the refining element to form the abrasive comminuting surface thereon. Most advantageously, the melting of a thin layer of the frontal surface (22) on the metal substrate (20) of the refiner element (10) is accomplished by directing unto the comminuting surface a laser beam (88) of sufficient intensity to melt the surface to a pre-determined depth.

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