| 摘要 |
A furnace spacer ( 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 150 ) for spacing a first annular preform ( 124 ) from a second annular preform ( 124 ), each of the first and second annular preforms ( 124 ) having an outer periphery ( 130 ) and a width and an inner opening ( 126 ) having a periphery ( 128 ) and a width, the spacer ( 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 150 ) including a hub ( 12, 22, 42, 52, 62, 72, 82, 92, 102, 152 ) having a width less than the inner opening width and a plurality of members ( 18, 30, 48, 56, 66, 76, 86, 94, 106, 162 ) projecting from the hub ( 12, 22, 42, 52, 62, 72, 82, 92, 102, 152 ). In addition, a stack formed from a plurality of preforms ( 124 ) and spacers ( 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 150 ) stacked for treatment in a furnace ( 120 ), each preform ( 124 ) including a disk having a center opening ( 126 ) having a width and having an outer periphery ( 130 ) and each spacer ( 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 150 ) comprising a hub ( 12, 22, 42, 52, 62, 72, 82, 92, 102, 152 ) having a width less than the center opening width and a plurality of members ( 18, 30, 48, 56, 66, 76, 86, 94, 106, 162 ) projecting outwardly from the hub ( 12, 22, 42, 52, 62, 72, 82, 92, 102, 152 ), wherein one of the plurality of spacers ( 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 150 ) is provided between adjacent pairs of the plurality of preforms ( 124 ). Also a method of stacking the preforms ( 124 ) and spacers ( 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 150 ).
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