FIELD: methods of measurement of hardness of metal.
SUBSTANCE: proposed method includes determination of rate of jumping and falling of striker of hardness gage from envelope under test: V/Vh; then, ratio of rate of jumping of striker from standard level of hardness to rate of jumping of striker from envelope under test V0/V is determined depending on curvature and thickness of envelope. Hardness HLo is determined according to hardness of standard level. Calibration of hardness gage is performed on basis of measurements thus made.
EFFECT: extended field of application.
2 dwg
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