Paper pulp defibering or refining plate and method of manufactur

Details Paper pulp defibering or refining plate and method of manufactur Paper pulp defibering or refining plate and method of manufactur

1996-06-05

1998-11-17

Husar, John M.

Solid material comminution or disintegration

Apparatus

Comminuting elements

241297, 241300, B02C 712

Patent

active

058365311

ABSTRACT:
A paper pulp defibering or refining plate in accordance with the invention comprises a comminuting surface having a large number of ridges separated by grooves. The plate body is made from a first material such as stainless steel or cast iron providing the overall mechanical strength of the plate in use. The upper part of the ridges is a layer of an abrasion resistant material based on grains of tungsten carbide bound in a metal alloy whose melting and brazing characteristics are appropriate to laser resurfacing on the plate body. The ridges are resurfaced successively by scanning a laser beam and a powder spray nozzle in one or more passes.

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patent: 5418350 (1995-05-01), Freneaux et al.
Brazing Handbook, 4th Edition, American Welding Society, Miami, Florida, p. 1, 1991.

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