Effective Way of Testing hardness of Tungsten Carbide
10-30-2015, 04:59 AM,
#1
Effective Way of Testing hardness of Tungsten Carbide
Hi everyone,
how can I test hardness of Tungsten Carbide end mill... ??
I figure out some figures HV=1800-2400
HRA=92-95
HRC=60-69
Are this figures are correct to cross check
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11-02-2015, 10:01 PM,
#2
RE: Effective Way of Testing hardness of Tungsten Carbide
To test the hardness of an end mill, you will need a Vickers test rig and a fixture to hold the mill. The test rig consists of a diamond indenter which applies a fixed load and a microscope to measure the length of the indentation. This length is then correlated to a hardness. The Rockwell scales are insufficient to test tungsten carbide hardness as the ball on the indenter is softer than the tungsten carbide.
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12-03-2015, 09:25 PM,
#3
RE: Effective Way of Testing hardness of Tungsten Carbide
Rockwell, using the N scale, with an N brale indenter can measure the hardness of carbide.
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