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Industrial experiences of bending fatigue strength in table liner for cement mill
Author(s) -
BAEK S.H.,
CHO S.S.,
JOO W.S.
Publication year - 2010
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2010.01450.x
Subject(s) - structural engineering , grind , engineering , grinding , bending , table (database) , mill , fracture (geology) , cement , earthquake shaking table , enhanced data rates for gsm evolution , materials science , geotechnical engineering , metallurgy , mechanical engineering , telecommunications , computer science , data mining
A table liner for the vertical roller mill has been used to grind natural limestone. Unexpected fatigue failure accidents have occurred during portland cement manufacturing process. The design life of a table liner is 4 × 10 7 cycles, but the actual fatigue life of a table liner is 2 × 10 6 to 8 × 10 6 cycles. The fatigue crack of a table liner initiates from the outside edge of the grinding path of the limestone. When such a crack occurs, the table liner has to be replaced, and this requires 30% of the total maintenance cost of the vertical roller mill. Therefore, this study examines the fatigue failure of a table liner by plane‐bending fatigue test, stress measurement test, finite element analysis and fatigue fracture analysis.