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Title: Wire Electrical Discharge Truing of Metal Bond Diamond Grinding Wheels

Cylindrical wire EDM profile truing of the metal bond diamond wheel for precision form grinding of ceramics is presented in this report. First a corrosion-resistant, precise spindle with the high-electrical current capability for wire EDM truing of grinding wheel was fabricated. An arc profile was adopted in order to determine form tolerances capabilities of this process. Results show the wire EDM process can generate {micro}m-scale precision form on the diamond wheel efficiently. The wheel, after truing, was used to grind silicon nitride. Grinding forces, surface finish of ground components, and wheel wear were measured. The EDM trued wheel showed a reduction in grinding force from that of the stick dressed wheel. Surface finishes between the two truing methods were similar. In the beginning of the grinding, significant wheel wear rate was identified. The subsequent wheel wear rate stabilized and became considerably lower.
Authors:
Publication Date:
OSTI Identifier:
814600
Report Number(s):
ORNL/TM-2001/220
TRN: US200318%%82
DOE Contract Number:
AC05-00OR22725
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 24 Jan 2002
Research Org:
ORNL Oak Ridge National Laboratory (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ACCURACY; CERAMICS; DIAMONDS; GRINDING; SILICON NITRIDES; WHEELS