B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
241/65
B02C 13/10 (2006.01) D21D 1/22 (2006.01) D21D 1/38 (2006.01)
Patent
CA 2031605
ABSTRACT The invention relates to a segment for drum refiners provided with comminuting, in particular grinding surfaces with a projection of hammerhead- shaped cross section for anchoring on the shell or periphery of the rotor or rotor drum . The invention is characterized mainly in that the segment (2') of T-shaped cross section consists of a slim stem (2") and a slim flange (2"') and that the transition surfaces from stem to hammerhead (12) viewed in cross section form an angle (B) of between 15 and 75 degrees, preferably about 55 degrees, open towards the hammerhead and conveniently equal on both sides with the axis of symmetry (8) of the hammerhead of symmetrical cross section. The ratio of the stem thickness (D) to the segment height (H) conveniently amounts to between 1 : 5 and 1 : 9, preferably about 1 : 7, and the flange thickness (FD) on the stem is about equal to the thickness of the stem. The transitions between flange and stem and between stem and hammerhead conveniently extend along comparatively large radii of curvature (R), for instance along a radius (R) which is equal to one half the time to one time the least thickness (S) of the flange. (Fig. 2).
Haider Franz
Lileg Johann
Obitz Lars
Zehentner Martin
Haider Franz
Lileg Johann
Maschinenfabrik Andritz Aktiengesellschaft
Obitz Lars
Swabey Ogilvy Renault
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