Руслан47

Может кому-то еще интересно по поводу методики 4-шариковой машины (1) ASTM D 2596 и (2) ASTM D 2783. В 1 методе The tester is operated with one steel ball under load rotating against three steel balls held in the form of a cradle. The rotating speed is 170±60 r/min. Lubricating greases are brought to a temperature of 27±8 °F and then subjected to a series of tests of 10-s duration at increasing loads until welding occurs. т.е. 170 оборотов при -3С по 10 сек с давлением пока не сварятся шарики. В 2 методе The tester is operated with one steel ball under load rotating against three steel balls h