Friction gages (frictional machines) are instruments for wearing tests, material and coating behavioral researches during surface friction and sliding depending on time, speed, load, temperature and humidity as well as on lubrication availability and type.
They are used for determination of such physical and mechanical characteristics as:
Tests are conducted in accordance with the following ASTM G99 standards (linear reciprocating mode) and ASTM G133 (rotational mode) Nanovea friction gages (friction factor measurement instruments) are equipped with special appurtenances enabling to conduct measurements at high temperatures up to 9000 C (high-temperature friction gage), operate in different wear modes (reciprocating, circle-wise, spiral-wise) or research material behavior using a lubrication system if lubrication is available. The load range is from 0.5 to 60 N (purpose-built solution is up to 2,000 N). Rotation rate is up to 15,000 rpm. Closed-loop control enables to maintain rotation rate to high precision as well as to change it during testing in the stage or continuous mode. It is particularly useful to obtain continuous Stribeck curves or upon research of the static coefficient of friction. As distinct from systems using torque sensors a&nnbsp;high-precision load sensor directly measuring friction force is used in Nanovea friction gages. To meet the needs in researches under different conditions the friction gages can be equipped with the wide range of additional equipment. The friction gage can be equipped with 3D non-contact optical profile meter which enables to calculate the total wear extent for the whole test to measure precisely the wear slot volume and calculate wear rate. Simple and reliable design of Nanovea friction gages ensures long service life in combination with low research cost.
