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LASER ASSISTED MACHINING PROCESSES

Objective

The industrial use of some materials (high strength steels, super alloys and ceramics) is at present limited due to their poor machinability.

Preliminary studies on LAM have shown that cutting force reductions of from 20 to 50% have been obtained on Inconel type alloys and high strength steels, resulting in some cases in tool wear reductions of 20%. This has allowed directions for research work to be defined and pursued to optimize LAM.

The objective of this project is to provide industry with technological data on materials having different properties so as to give information on machining cost reductions.
To reach the target, LAM tests have been carried out, with laser beam analysis (conditions of plasma forming), thermal gradients and vibrations measurements), and completed by optical, thermal and mechanical parametric modelling of LAM.

The economic evaluation of LAM processes has been performed through assessment of gains brought by laser assistance during machining, in terms of cutting forces, tool wear, catastrophic tool breakage and vibration reductions, and machined parts quality improvement.

Some demonstration parts have been laser assisted machined leading first to demonstrate that the process is applicable on complex shapes and second to estimate part costs.

It can be said that during this programme progress has been made in the better understanding of these materials and the machining of them, when assisted by laser. While it is clear that the LAM process is not applicable nor desirable in all machining operations, it is equally clear that under certain circumstances, with certain conditions, LAM is indeed, a process that will produce components quicker and at a lower price.
The industrial use of some materials (high strength steels, super alloys and ceramics) is at present limited due to their poor machinability.

Preliminary studies on LAM have shown that cutting force reductions of from 20 to 50% have been obtained on Inconel type alloys and high strength steels, resulting in some cases in tool wear reductions of 20%. This has allowed directions for research work to be defined and pursued to optimize LAM.

The objective of this project is to provide industry with technological data on materials having different properties so as to give information on machining cost reductions.

Coordinator

Société Nationale d'Études et de Construction de Moteurs d'Aviation (SNECMA)
Address
2 Boulevard Du Général Martial Valin
75724 Paris
France

Participants (11)

AEA Technology plc
United Kingdom
Address
Culham Laboratory
OX14 3DB Abingdon
Aérospatiale Société Nationale Industrielle SA
France
Address
37 Boulevard De Montmorency
75781 Paris
Centrale Recherche S.A.
France
Address
Grande Voie Des Vignes
92295 Chatenay Malabry
Centro Laser de Navarra
Spain
Address
Ctra.tajonar,s/n
31006 Pamplona
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Germany
Address
Steinbachstrasse 17
52074 Aachen
Groupement Industriel des Armements Terrestres
France
Address
10 Place Georges Clemenceau
92211 Saint-cloud
Institut Regional de Promotion de la Recherche Appliquee
France
Address
2 Rue Brulee
67000 Strasbourg
Istituto per le Ricerche di Tecnologia Meccanica e per l'Automazione SpA
Italy
Address
Regione Lime
10080 Vico Canavese Torino
Peugeot SA
France
Address
75 Avenue De La Grande Armée
75116 Paris
Renault Automation
France
Address
8-10 Avenue Émile Zola
92109 Boulogne-billancourt
Établissement Technique Central de l'Armement
France
Address
16 Bis Avenue Prieur De La Côte D'or
94114 Arcueil