Tribological Effects of Metalworking Fluids in Cutting Processes

verfasst von

Florian Pape, Gerhard Poll, Lars Ellersiek, Berend Denkena, Haichao Liu

Abstract

An understanding of the proper application of metalworking fluids (MWFs) is necessary for their implementation in efficient production processes. In addition, the knowledge of the process-related aspect of chip transport and the macroscopic cooling effect, the characteristics and properties of lubricant film formation, and the cooling conditions in the secondary shear zone on the chip surface, i.e., in the direct vicinity of the material separation, represent a combined fundamental scientific issue within production engineering. The aim is to transfer methods from the field of tribology of machine elements, which have already led to a considerable gain in knowledge in this discipline, to machining and to couple them with already established approaches to machining. In the case of roller bearings, the contact pressure is in the range as the pressure in the contact zone between the cutting insert and chip. Due to this, established methods might be transferred to the cutting process. In addition to classical pin-on-plate and pin-on-ring friction investigations, film thickness measurements were carried out and compared to machining tests. The coefficient of friction determined in the planing test rig is 0.48 for dry cutting, while it is 0.47 for wet cutting. These two values are much larger than the CoF with MWFs measured on the two tribometers. It is shown that the boundary friction of MWF especially influences the machining process. Thus, additives in MWF might have a high significance in machining.

Organisationseinheit(en)

Institut für Maschinenkonstruktion und Tribologie
Institut für Fertigungstechnik und Werkzeugmaschinen

Externe Organisation(en)

CAS - Lanzhou Institute of Chemical Physics
Qingdao Center of Resource Chemistry and New Materials

Typ

Artikel

Journal

Lubricants

Band

11

ISSN

2075-4442

Publikationsdatum

16.05.2023

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Maschinenbau, Oberflächen, Beschichtungen und Folien

Elektronische Version(en)

https://doi.org/10.3390/lubricants11050224 (Zugang: Offen)