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US 10,501,888 B2Granted
Cast refiner plate segment with blunt edges and corners for safe handling
AssigneeAndritz Inc.
InventorsLuc Gingras, Yves Raymond
Life of this patent
Estimating the term…
Abstract
A cast metal plate segment for a refiner of lignocellulosic material or a disperser of comminuted paper or packaging products, the plate segment including a front side with a front surface configured to refine the lignocellulosic material or disperge the comminuted paper or packaging products, and a back side, opposite to the front side, including a corner or edge, wherein the corner or edge comprises a casted surface between machined planar surfaces adjacent the corner or edge.
Claims18
A method of forming a plate segment comprising:
- casting a plate segment, wherein the plate segment comprises a front side having a refining surface configured to develop material sent through a mechanical refiner or disperser, and a back side having a third cast surface disposed between a first cast surface and a second cast surface at a junction, wherein the first cast surface is substantially perpendicular to the second cast surface;
- machining the first cast surface to form a first machined surface;
- and
- machining the second cast surface to form a second machined surface, wherein the third cast surface remains after machining the first cast surface and the second cast surface, and wherein the third cast surface remains disposed between the first machined surface and the second machined surface.
1 more element
A method of forming a plate segment comprising:
- casting a plate segment, wherein the plate segment comprises a front side having a refining surface configured to develop material sent through a mechanical refiner or disperser, and a back side having a third cast surface disposed between a first cast surface and a second cast surface at a junction;
- and
- machining the first cast surface to form a first machined surface, wherein the third cast surface remains after machining the first cast surface, and wherein the third cast surface separates the first machined surface from the second cast surface.
Dependencies are inferred from the claim text.