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Newage Industries, Inc.

Giancarlo Mazzoleni

Gordon M Baker

A portable Brinell testing apparatus that meets the load time requirements of the ASTM E10 standard. The invention uses a constant force spring connected to a lever arm which is pivoted on fulcrum. The mechanical advantage of the mechanism is able to achieve a force of up to 3000 Kgf with constant force springthat can be activated by the operator.

Portable brinell testing apparatus

A portable testing apparatus for a Brinell test meeting the load time requirements of the ASTM E10 standard. The apparatus incorporates a hydraulic accumulator acting on a cylinder which is connected to an indenter. The accumulator keeps a constant force on the indenter for the period of time of the test despite hydraulic leakage or creep of the indenter into the material that would cause a reduction in pressure if not for the accumulator. Usually, the test time length is 10 seconds. Pressure is set using springs usually in a settable sequence valve.

Portable hydraulic brinell testing apparatus

Centering devices are provided for use with Brinell hardness measuring instruments, particularly electro-optical probes, which include one or more illumination sources in a housing having an aperture at one end which is aligned with an optical axis of the probe to provide the optics a view of the specimen surface opposite the opening. In one embodiment, a spider-like centering structure is provided protruding through the probe end opening. The centering structure directs light from source in the probe directly into an indentation in a specimen surface engaging the centering structure and prevents light from crossing the indentation and reducing edge contrast. A mask further prevents spillage of light from each source onto the specimen surface adjoining the indentation and the source so as to heighten contrast differences between the bright surface of the indentation and the dark surrounding specimen surface. Diametric measurements and hardness determinations can be performed without visual observation of the illuminated indentation by an operator. Specimen hardness can be determined from illumination intensity data generated and gathered during a single illumination of the indentation taking about 1/30th of a second. Another device includes a source developing a beam of visible light, which is directed through the probe end opening with sufficient intensity to permit an operator to locate and at least generally align the probe end with an indentation using the light beam.

Brinell hardness-measuring probe with centering device

A centering device for Brinell hardness-measuring instruments includes an alignment member positioned at the opening of the instrument providing a field of view to the optics within the instrument. A central portion of the alignment member protrudes through the instrument opening and is hemispherically configured to mate with a circular Brinell penetrator indentation in the specimen surface. The central portion of the alignment member is open to freely pass light axially through the alignment member. The alignment member is preferably spring supported within the instrument to permit the alignment member to partially retract into the instrument and the working face of the instrument to be positioned against the specimen. A switch is provided responsive to movement of the alignment member to activate a light source in the instrument.

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Horsham, PA, United States of America

Giancarlo Mazzoleni