Investigation of different lubricant classes for aluminium warm and hot forming based on a strip drawing test

Over the past 15 years, numerous tribological systems for warm and hot aluminium sheet metal forming have been investigated by various researchers. Two previously disregarded aspects will be examined in this paper with an enhanced strip drawing test: the temperature influence on friction and wear performance in an extensive comparison of different lubricant classes in tool lubrication and the bonding performance of different lubricants to the die surface. In depth analyses of the coefficient of friction (COF) and wear performance (wear-free draw in) for nine different lubricants and additionally several different formulations / mixtures were carried out for sheet temperatures from 20 degrees C to 425 degrees C. Furthermore, approaches for future lubricant developments are given.

Automated summary

This paper investigates the temperature influence on friction and wear performance in different lubricant classes and the bonding performance of lubricants to die surfaces. The results provide guidance for future lubricant developments.