Refining element for a refining disk
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United States of America Patent
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Jul 20, 2004
Grant Date -
Feb 6, 2003
app pub date -
Sep 10, 2002
filing date -
Mar 15, 2000
priority date (Note) -
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Abstract
Refining elements for refining discs for disc refiners for the manufacture of mechanical pulp are disclosed, having improved wear resistance by utilizing alloys with precipitated carbides. An improved service life is obtained with a refining disk having the following analysis in % by weight: 2.96 C, 0.77 Si, 0.82 Mn, 24.2 Cr, 5.16 v, 0.04 Ni, 0.03 Mo, and the reminder Fe and impurities. After casting, the refining segments are hardened and annealed and assume a hardness of 57-63 HRC.
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