Segmental type grinding wheel

Details Segmental type grinding wheel Segmental type grinding wheel

2005-01-25

2005-01-25

Hail, III, Joseph J. (Department: 3723)

Abrading

Rigid tool

Rotary cylinder

C451S542000, C451S544000, C051S298000, C125S015000

Reexamination Certificate

active

06846233

ABSTRACT:
A grinding wheel of segmental type including an inner cylindrical core portion, and an outer grinding portion consisting of a plurality of segments which have abrasive layers formed of abrasive grains bonded together with a glass bonding agent and which are bonded to an outer circumferential surface of the core portion with a synthetic resin layer interposed therebetween, wherein a linear thermal expansion coefficient αseg(/° C.) of the segments and a linear thermal expansion coefficient αcor(/° C.) of the core portion satisfy a formula |(αcor−αseg)|≦6×10−6.

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