汽油缸（BOC）飞机燃油润滑测试仪

This metric SAE Aerospace Information Report (AIR) details a ball-on-cylinder (BOC) test device and specifies a method of rating the relative lubricity of aviation turbine fuel samples. The BOC produces a wear scar on a stationary steel ball by forcing it with a fixed load against a fuel wetted steel test ring in a controlled atmosphere. The test ring is rotated at a fixed speed so its surface is wetted by a momentary exposure to the fluid under test. The size of the wear scar is a measure of the test fluid lubricity and provides a basis for predicting friction or wear problems.Cross Reference: AIR4027,AISI/E52100,ANSI/B3.12,ARP1797,ASTMD1016,ASTMD329,ASTMD4306,ASTMD770,MIL-I-25017