DEVELOPMENT OF A METHOD FOR EVALUATING LUBRICANTS FOR COLD WORKING METALS.
Abstract
The possibility of a simple compression test for the evaluation of lubricants in cold working processes has been investigated using Armco iron and aluminum alloy 7075-0 as principal experimental materials. The test is useful for eliminating very poor lubricants and selecting the better ones for further evaluation in the metal working processes under consideration. The results indicated that there are differences in compression, rolling, piercing and drawing that make a complete correlation for a series of lubricants in all four processes impractical. Experiments using aluminum alloy 1100-F showed that one of these differences, the amount of sliding displacement between tool and workpiece, influences forces appreciably through its effect on lubricant-film breakdown. Coefficients of friction have been calculated for a number of lubricants in compression, drawing and rolling. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1959
- Accession Number
- AD0624451
Entities
Organizations
- Massachusetts Institute of Technology