Magnell hardness tester

Details Magnell hardness tester Magnell hardness tester

1992-09-22

1996-07-02

Gregory, Bernarr E.

Measuring and testing

Hardness

By penetrator or indentor

73 1101, 73 81, G01N 340

Patent

active

H00015547

ABSTRACT:
An apparatus and method for testing the hardness properties of metallic st materials, wherein electromagnets are employed to replace clamping means. Said apparatus comprises two electromagnets, and a test head which comprises a ball indenter means, a conventional hydraulic hand pump, a pop-off release valve and numerous gauges. A method of testing metallic sheet materials, and specifically armors, is set forth.

REFERENCES:
patent: 2956432 (1960-10-01), Henrikson
patent: 3295363 (1967-01-01), Delporte
patent: 3754436 (1973-08-01), Saxton
patent: 4164141 (1979-08-01), Sandor et al.
patent: 4196616 (1980-04-01), Argabrite et al.
patent: 5062293 (1991-11-01), Bakirov et al.

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