Device for evaluating abrasive wear of elastomeric O-ring materi

Details Device for evaluating abrasive wear of elastomeric O-ring materi Device for evaluating abrasive wear of elastomeric O-ring materi

1981-05-18

1983-09-20

Yasich, Daniel M.

Measuring and testing

By abrasion, milling, rubbing, or scuffing

73766, G01N 356

Patent

active

044048408

ABSTRACT:
An abrasive wear tester wherein a segment of a relatively small diameter O-ring is held in contact with a rotating cylindrical disk. The disk is mounted to rotate about its longitudinal axes at a known rate for a specified period of time. The O-ring segment and cylinder are immersed in an abrasive fluid. The abrasive particles are pulled between the wear surfaces causing removal of the surface materials, predominantly the softer O-ring material. The O-ring specimen is cut from an O-ring and weighed prior to test. After the test the O-ring segment is again weighed and the weight of material removed by wear is calculated. These measurements indicate the wear resistance of the O-ring being tested. Service loads or pressures are simulated by means of a cable and weight system urging the O-ring against the cylindrical wear disk surface by means of a lever arm pulley arrangement or similar loading device.

REFERENCES:
patent: 1444803 (1923-02-01), Ratner et al.
patent: 2808719 (1957-10-01), Kommers
patent: 2970411 (1961-02-01), Trolander
patent: 3592362 (1971-07-01), Kane
patent: 3717025 (1973-02-01), Kronenberg
Publ.--"O-Ring Wear Test Machine" by B. H. Burr et al., pp. 1-12, Wear vol. 68, No. 1, (pp. 21-32).
Publ.--"Friction and Wear Characteristics of Plastic Guides", D. K. Pal et al., J. Inst. Eng., (India), vol. 50, No. 11, 7/1970, (pp. 298-306).

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