SME MR94-143

CARBIDE AND CERAMIC TOOL INSERTS ARE OFTEN COATED WITH A VARIETY OF HARD FILMS TO IMPROVE THE WEAR RESISTANCE AND TOOL LIFE. SINCE TOOL WEAR CAN OCCUR BY A NUMBER OF MECHANISMS, INCLUDING BOTH THERMAL AND ATHERMAL MECHANISMS, AN INVESTIGATION WAS CONDUCTED TO CHARACTERIZE THE TYPICAL EFFECTS OF APPLYING A THERMALLY CONDUCTIVE HARD COATING TO A CERAMIC TOOL INSERT. A 3-D FINITE MODEL WAS DEVELOPED FOR THE CUTTING REGION OF THE ALUMINA TOOL, TO EVALUATE THE RELATIVE THERMAL DISTRIBUTIONS AND RESULTING MECHANICAL STRESSES FOR THE COATED AND UNCOATED TOOL.

Product Details

Published:

06/01/1994

Number of Pages:

6

File Size:

1 file , 900 KB