Effect of Tooling Temperature on the Transient Lubricant Behavior in Hot Metal Forming Processes. Issue 4 (22nd September 2022)

• Record Type: Journal Article
• Authors: Yang, Xiao; Zhang, LeMeng; Liu, Heli; Politis, Denis J.; Gharbi, Mohammad M.; Shi, Huifeng; Wang, LiLiang
• Other Names: Asnafi Nader guestEditor.
• Is Part Of: Steel research international. Volume 94:Issue 4(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-09-22
• Subjects: interactive friction models -- tooling temperatures -- transient lubricant behaviors -- two-phase lubricants; Steel -- Periodicals; Steel -- Metallurgy -- Periodicals; 669.142
• DOI: 10.1002/srin.202200306
• Languages: English
• ISSNs: 1611-3683

Abstract

Abstract : In hot metal forming processes, the temperature of the forming tool progressively increases under serial production conditions. Water‐based two‐phase lubricants may be applied to cool the forming tool and moderate temperature, in which the liquid agent would evaporate or decompose rapidly with dry matter deposited on the tooling surface during the dwelling time before the forming process commences. Herein, an interactive friction model for a two‐phase lubricant is developed to predict the transient lubricant behaviors, i.e., predicting the effects of tool temperature and dwelling time on the friction coefficient evolution and lubricant breakdown. Friction tests between a warm pin and hot aluminum workpiece are conducted using the advanced friction testing system, TriboMate, to validate the modeling results. Abstract : In hot metal forming processes, the temperature of the forming tool progressively increases under serial production conditions. Herein, an interactive friction model for a two‐phase lubricant is developed to predict the transient lubricant behaviors, i.e., predicting the effects of tool temperature and dwelling time on the friction coefficient evolution and lubricant breakdown.