Effects of lubricant and lubrication parameters on friction during hot steel forging

Autor: E. Daouben, R. Deltombe, Laurent Dubar, N. G. Truong Dinh, L. Lazzarotto, Mirentxu Dubar, André Dubois
Rok vydání: 2008
Předmět:
Zdroj: International Journal of Material Forming. 1:1223-1226
ISSN: 1960-6214
1960-6206
DOI: 10.1007/s12289-008-0162-5
Popis: The aim of the present work is to improved comprehension of wear phenomenon during hot steel forging with sprayed lubricants. The study reported in this paper uses a specific friction test, called the Warm Hot Upsetting Sliding Test (WHUST), which reproduces hot forging contact conditions. Wear markers –such as friction force/normal load ratio or sliding distance before the first scratch– are proposed to characterize the contactor wear at microscopic and macroscopic scales. Friction tests are performed on 1100°C heated specimens to characterize the influence of graphite based lubricant film thickness and particle sizes on friction and wear in the flash zone of a nitrided steel die.
Databáze: OpenAIRE