Accession Number : AD0739220

Title :   Lubricating Capacity of a Medium during Abrasive Wear of Drilling Steel,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Konesev,G. V. ; Spivak,A. I. ; Mavlyutov,M. R.

Report Date : 30 DEC 1971

Pagination or Media Count : 13

Abstract : The friction coefficient of steel during drilling in various lubricating media decreased in the order water, drilling muds, air, and oil drilling fluids. The properties of the boundary liquid layer had a decisive effect on the lubricating capacity when drilling fluids were used, but in air drilling the properties of the metal surface film were dominant. Media with lubricating properties increased the drilling rate, resistance of tools, and efficiency. Surfactant and specific additives improved the properties of the boundary liquid layers and metal surface films. (Author)

Descriptors :   (*CUTTING FLUIDS, *DRILLING), (*DRILLS, LUBRICATION), STEEL, AIR, WATER, FRICTION, SURFACE ACTIVE SUBSTANCES, ROCK, LUBRICANT ADDITIVES, USSR

Subject Categories : Lubricants and Hydraulic Fluids

Distribution Statement : APPROVED FOR PUBLIC RELEASE