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Influence of a heat treatment prior to cold forging operations on the performance of lubricants

Zang, Sebastian and Kramer, Philipp and Müller, Christoph (PtU) and Rezanov, Vladimir and Groche, Peter
Karadogan, Omer (ed.) (2014):
Influence of a heat treatment prior to cold forging operations on the performance of lubricants.
In: Proceedings of the 47th ICFG Plenary Meeting, [Conference or Workshop Item]

Abstract

Cold forging operations are subject to high tribological loads. In order to enable a reliable forging process, lubricants have to be chosen with respect to the occurring loads. However, it is known that well established lubricants can increase the surface roughness of a specimen as a consequence of the forming. On the other hand, zinc-phosphate + molybdenum disulfide which is known to create a smooth specimen surface often shows higher friction coefficients. Therefore, a sound lubrication is of special interest for near net-shape operations. The paper at hand presents the results of a heat treatment prior to cold forging operations on the performance of lubricants. The zinc-phosphate + molybdenum disulfide lubrication system indicates that a heat treatment of the lubricant results in a decrease of the friction coefficient. Tests on the Sliding Compression Test as well as a standard rod extrusion process were carried out in this investigation.

Item Type: Conference or Workshop Item
Erschienen: 2014
Editors: Karadogan, Omer
Creators: Zang, Sebastian and Kramer, Philipp and Müller, Christoph (PtU) and Rezanov, Vladimir and Groche, Peter
Title: Influence of a heat treatment prior to cold forging operations on the performance of lubricants
Language: German
Abstract:

Cold forging operations are subject to high tribological loads. In order to enable a reliable forging process, lubricants have to be chosen with respect to the occurring loads. However, it is known that well established lubricants can increase the surface roughness of a specimen as a consequence of the forming. On the other hand, zinc-phosphate + molybdenum disulfide which is known to create a smooth specimen surface often shows higher friction coefficients. Therefore, a sound lubrication is of special interest for near net-shape operations. The paper at hand presents the results of a heat treatment prior to cold forging operations on the performance of lubricants. The zinc-phosphate + molybdenum disulfide lubrication system indicates that a heat treatment of the lubricant results in a decrease of the friction coefficient. Tests on the Sliding Compression Test as well as a standard rod extrusion process were carried out in this investigation.

Uncontrolled Keywords: Cold Forging, Heat treatment, Lubricants
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institut für Produktionstechnik und Umformmaschinen (PtU)
Event Title: Proceedings of the 47th ICFG Plenary Meeting
Date Deposited: 01 Apr 2016 07:08
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