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Joel  RECH
  • ENISE - 58 Rue Jean Parot - 42023 Saint-Etienne Cedex 2 - France

Joel RECH

Enise, LTDS UMR CNRS 5513, Faculty Member
The quantification of friction coefficient along the tool–workmaterial interface in machining remains an issue in tribology. This paper aims identifying the evolution of friction coefficient for a large range of sliding velocity during... more
The quantification of friction coefficient along the tool–workmaterial interface in machining remains an issue in tribology. This paper aims identifying the evolution of friction coefficient for a large range of sliding velocity during the machining of a AISI4140 steel (290HB) with a TiN coated carbide tool. The influence of a straight oil is investigated compared to a dry sliding situation
ABSTRACT This paper overviews some typical tribo-contact characteristics obtained in the turning of the pearlitic-ferritic nodular iron (EN-GJS-500-7 grade with UTS=500 MPa) when using carbide tools coated with single TiAlN and multiple... more
ABSTRACT This paper overviews some typical tribo-contact characteristics obtained in the turning of the pearlitic-ferritic nodular iron (EN-GJS-500-7 grade with UTS=500 MPa) when using carbide tools coated with single TiAlN and multiple TiC/Ti(C,N)/Al 2 O 3 /TiN layers, as well as silicon nitride Si 3 N 4 based ceramic tools. As a competitor, a P20 uncoated carbide grade was selected. The fundamental process readings include the tool-chip interface temperature, Peclet number, friction coefficient and the tool-chip contact length as functions of cutting parameters. In particular, the measurements of cutting temperature were carried out using conventional tool-work thermocouple method and IR mapping technique. It is concluded based on many process characteristics that multilayer coated and ceramic tools can substantially improve the performance of nodular iron machining.
A better understanding of friction modeling is required to lead to more realistic finite element models (FEMs) of machining process. This work proposes to evaluate the performance of a new friction model depending on the local sliding... more
A better understanding of friction modeling is required to lead to more realistic finite element models (FEMs) of machining process. This work proposes to evaluate the performance of a new friction model depending on the local sliding velocity, compared to a standard approach considering a constant Coulomb friction coefficient. A finite element model, based on the Arbitrary Lagrangian–Eulerian (ALE) approach,
Research Interests:
This paper investigates the effects of edge radius of a round-edge PVD coated tool upon chip formation, cutting forces, and tool stresses in orthogonal cutting of an alloy steel 42CrMo4 (AISI 4142H). A comprehensive experimental approach... more
This paper investigates the effects of edge radius of a round-edge PVD coated tool upon chip formation, cutting forces, and tool stresses in orthogonal cutting of an alloy steel 42CrMo4 (AISI 4142H). A comprehensive experimental approach based on end turning of thin-walled tubes is conducted using advanced coated tools with well-defined cutting edge radii ranging from 9 to 28 microns.
Research Interests:
This paper investigates the effects of edge radius of a round-edge PVD coated tool upon chip formation, cutting forces, and tool stresses in orthogonal cutting of an alloy steel 42CrMo4 (AISI 4142H). A comprehensive experimental approach... more
This paper investigates the effects of edge radius of a round-edge PVD coated tool upon chip formation, cutting forces, and tool stresses in orthogonal cutting of an alloy steel 42CrMo4 (AISI 4142H). A comprehensive experimental approach based on end turning of thin-walled tubes is conducted using advanced coated tools with well-defined cutting edge radii ranging from 9 to 28 microns.
Research Interests:
This paper investigates the effects of edge radius of a round-edge coated carbide tool on chip formation, cutting forces, and tool stresses in orthogonal cutting of an alloy steel 42CrMo4 (AISI 4142H). A comprehensive experimental study... more
This paper investigates the effects of edge radius of a round-edge coated carbide tool on chip formation, cutting forces, and tool stresses in orthogonal cutting of an alloy steel 42CrMo4 (AISI 4142H). A comprehensive experimental study by end turning of thin-walled tubes is conducted, using advanced coated tools with well-defined cutting edge radii ranging from 5 to 68 microns. In
... rech@ enise. fr Hedi HAMDI ENISE-LTDS, 58 Rue Jean Parot, 42000 St-Etienne (France), joel. rech@ enise. ... [17] ED DOYLE, JG HORNE, D. TABOR," Frictional interactions between chip and rake face in continuous chip... more
... rech@ enise. fr Hedi HAMDI ENISE-LTDS, 58 Rue Jean Parot, 42000 St-Etienne (France), joel. rech@ enise. ... [17] ED DOYLE, JG HORNE, D. TABOR," Frictional interactions between chip and rake face in continuous chip formation", Proc. R. Soc. London, Vol. 336, 1979, pp. ...
L'ENSAM est un Grand Etablissement composé de sept centres : AIX-EN-PROVENCE - ANGERS - BOREAUX - CHÄLONS-SUR-MARNE - CLUNY - LILLE - PARIS ... Ce travail est le résultat d'une recherche qui s'est déroulée au sein de la... more
L'ENSAM est un Grand Etablissement composé de sept centres : AIX-EN-PROVENCE - ANGERS - BOREAUX - CHÄLONS-SUR-MARNE - CLUNY - LILLE - PARIS ... Ce travail est le résultat d'une recherche qui s'est déroulée au sein de la société Equipements et
The analysis of the plastic injection mold market shows the interest of reducing milling costs; the improvement of mold steel machinability is one response to rough milling. The quantification of the gains offered by new mold steels... more
The analysis of the plastic injection mold market shows the interest of reducing milling costs; the improvement of mold steel machinability is one response to rough milling. The quantification of the gains offered by new mold steels requires the development of more accurate and suitable comparison methods to appreciate the response to rough milling with toric milling cutters. The methods proposed in this paper take into account more reliable tool-life criteria. Results of comparison tests are analysed from scientific, technological and economical points of view. Moreover, the deduced models lead to a better understanding of the respective roles of each parameter.
Research Interests:
... rech@ enise. fr Hedi HAMDI ENISE-LTDS, 58 Rue Jean Parot, 42000 St-Etienne (France), joel. rech@ enise. ... [17] ED DOYLE, JG HORNE, D. TABOR," Frictional interactions between chip and rake face in continuous chip... more
... rech@ enise. fr Hedi HAMDI ENISE-LTDS, 58 Rue Jean Parot, 42000 St-Etienne (France), joel. rech@ enise. ... [17] ED DOYLE, JG HORNE, D. TABOR," Frictional interactions between chip and rake face in continuous chip formation", Proc. R. Soc. London, Vol. 336, 1979, pp. ...

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