6533b872fe1ef96bd12d3a6b
RESEARCH PRODUCT
Gas protection optimization during Nd:YAG laser welding
Eugen CicalaDominique GreveyPierre SallamandSorin Ignatsubject
Heat-affected zoneMaterials sciencebusiness.industryNuclear engineeringShielding gasLaser beam weldingGas protectionWeldingLaserElectric resistance weldingAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialslaw.inventionOpticsPressure sensorsPACS: 42.62; 34.50.D; 82.65.P; 07.07.DlawNd:YAG laserShielding gasLaser weldingElectrical and Electronic Engineeringbusinessdescription
International audience; Many laser processes, such as welding or surface treatments are associated with an undesired phenomenon, which is oxidation. The solution commonly employed to solve this problem approaches the shielding gas and/or the shielding gas device. What we propose in this paper is a methodology with the goal to optimize the protection gas device design as well as the gas flow in the case of laser welding and surface treatments. The pressure created by the gas flow on the sample surface is recorded and analysed together with the operating parameters influence in order to reach the objectives. The nozzle system designed and presented below assures the protection against material oxidation using minimal gas flow rates and increases the welding penetration in the case of high-power Nd:YAG laser welding.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-08-25 |