Accession Number : AD0713446

Title :   STUDY OF EFFICIENCY OF LUBRICANTS FOR DROP FORGING,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Demidov,L. D. ; Petrunin,V. P.

Report Date : 18 AUG 1970

Pagination or Media Count : 7

Abstract : A study was made of the basic factors affecting the efficiency of lubricants for drop forging. A description is given of the methods and results of a study of the wetting capacity, film adherence, as well as cooling and heat-insulation properties of 40 different lubricants such as aqueous solutions of lubricant and water suspensions of greases. Use is made of the KBZh concentrate and Na silicate as stabilizers and binders. Aqueous suspensions of greases are poor wetting agents for metal surfaces heated above 100 degrees centigrade due to the formation of vapor blocks in the contact points of lubricant drops. The film of an aqueous suspension of 3-4 percent colloidal graphite and 3-4 percent of KBZh concentrate (as a stabilizer) adhere somewhat better to the metal surface. Salt solutions cool the metal surface more drastically, while a suspension of greases with the KBZh concentrate stabilizer quickly form a solid film which is a poor heat transfer agent. The heat transfer and heat conduction coefficients are presented. (Author)

Descriptors :   (*LUBRICANTS, *DROP FORGING), WETTING, FRICTION, HEAT RESISTANT MATERIALS, USSR

Subject Categories : Lubricants and Hydraulic Fluids

Distribution Statement : APPROVED FOR PUBLIC RELEASE