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| Friction and Abrasion Wear | ||
|---|---|---|
| Erosive-wear testing facility | Albany Metallurgy Research Center John E. Kelley, 420-5896 | A 12-specimen erosion test apparatus built at AMRC uses an S.S. White Airbrasive model-H unit to propel 27 um AI2O3 particles against specimens at temperatures UP to 1,000°C in selected atmospheres and at selected impingement angles. Relative erosion is determined by comparing material loss of a target with that of a "standard" specimen. |
| Friction and rubbing-wear test facility | Albany Metallurgy Research Center John E. Kelley, 420-5896 | A Falex-6 friction and wear machine built by Faville-LeVally Corp. is used to measure abrasion wear, adhesive wear, and coefficient of friction of solid materials. Pin-on-disc and ring-on-ring tests can be made, wet or dry, with or without abrasive particles, in either cyclic or continuous rubbing modes, under variable and controllable conditions of speed, load, atmosphere,and temperature to 260°C (500°F). |
| Friction and wear | Twin Cities Mining Research Center D. R. Tweeton, 725-3468 | The Dow Coming Alpha LWF-1 friction- and wear-testing machine can measure sliding friction of metal/metal or metal/mineral test pairs in air or environmental fluid. |
| Impact-abrasion tester | Albany Metallurgy Research Center John E. Kelley, 420-5896 | An impact machine with variable speed and thrust is used to repeatedly impact test specimens tangentially against a rough material such as sandstone to determine the impact-abrasion wear rate. |
| Simulated-service ball-valve tester | Albany Metallurgy Research Center John E. Kelley, 420-5896 | Ball valves fitted with experimental parts such as balls and seats can be tested for wear by automatic cyclic operation. During each cycle a differential pressure up to 2100 Pa at 430°C (650°F) is applied, then relieved, across the valve, and abrasive solids are passed back and forth through the valve by operating the tester in the manner of an hourglass. Parts wear is monitored by recording the rate of gas leakage across, say, the ball and seat each time the differential pressure is applied. Damaged parts are removed and examined both macro- and microscopically. |
| Hardness and Scratch Analysis | ||
| Microhardness | Twin Cities Mining Research Center George A. Savanick, 7254543 | The Zeiss microindentation hardness tester is capable of measuring the microhardness of selected microscopic areas on solid surfaces. A Knoop diamond is pressed into the solid and the diamond-shaped impression thus formed is measured under high magnification (500-1,500X)with a special eyepiece. The optical system is equipped with a Nomarski differential interference contrast capability which enhances image contrast. |
