PROCEDURE FOR TESTING AND EVALUATION OF EFFICIENCY OF PROCESS LUBRICANTS Russian patent published in 2011 - IPC G01N3/28 

FIELD: metallurgy.

SUBSTANCE: blank and surfaces of device contacting with it are covered with lubricant and are jammed along contour. During deformation there are made recesses in blank. The blank is removed from the device and deformation is measured. There is used a rectangular blank with dimension of the least side within the range 1.5÷1.9 D_n, where D_n is diametre of a puncheon. By scratching there is made circumference in the centre of the blank with radius R₀ equal to R₀=D_n/2-(10÷15)S₀, where S₀ is thickness of a source blank. The blank is deformed at depth H, a value of deformation is chosen less, than the value of depth at which there are occurred ruptures on blanks. Deformations are measured on a bottom of the cartridge along increase of radius R₀ on base of which efficiency of lubricant is evaluated.

EFFECT: expanded probabilities of evaluation of process lubricants efficiency.

2 dwg, 1 tbl