Development of a laser ablation process model and a disposable 3D-printed tool head for weakening thick steel sheets for the deflagration of hazardous substances. (August 2019)

• Record Type: Journal Article
• Authors: Kaierle, Stefan; Overmeyer, Ludger; Hoff, Christian; Meier, Oliver; Hermsdorf, Jörg
• Is Part Of: CIRP journal of manufacturing science and technology. Volume 26(2019)
• Page Start: 94
• Page End: 99
• Publication Date: 2019-08
• Subjects: Grooving -- Laser beam machining (LBM) -- Laser ablation -- Thick metal processing -- Additive manufacturing; Manufacturing processes -- Periodicals; 670.5
• DOI: 10.1016/j.cirpj.2019.04.006
• Languages: English
• ISSNs: 1755-5817

Abstract

Abstract: So far, laser processes for the defined weakening of metals have been investigated only in wall thickness ranges of a few millimeters. In the case considered, the sheaths of UXOs (4–25 mm) are to be weakened in order to reduce danger. The developed model for the melt-ablation process with a 2 kW solid-state laser enables the defined weakening of steel sheets of up to 15 mm. It is ensured that a critical temperature of 300 °C on the underside of the material is not exceeded. In accordance with the process requirements, a cost-effective 3D-printed disposable process head is manufactured and verified with regard to the developed model.