Effect of lubrication of the metal powder rolling process

Abstract

1. The addition of liquid lubricants to powders and roll lubrication decrease the thickness of the strip being rolled and improve the compressibility of the powders. The effectiveness of a lubricant depends on its activity and on the specific surface of the powder being rolled. 2. The addition of solid lubricant has no effect, in the range of parameters investigated, on the compressibility of powder charges. 3. There is a qualitative correlation between changes in the compressibility of powders during rolling and in their coefficients of internal friction.