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Correlation between Joint Strength and Process Temperature in Quasi-Simultaneous Laser Transmission Welding of Polyamide 6

  • The joint strength is gaining importance in quasi -simultaneous laser transmission welds, especially in structural components. A correlation between the joint strength and a process characteristic is a basic requirement for selecting the best process parameter setting. In this work, the temperature is measured during welding polyamide 6 by using a scanner-integrated pyrometer with an InGaAs-detector. The filtering of the heat radiation in the upper joining partner is taken into account by calibrating the mea surement system. By this, the measured temperature signal represents the temperature in the joining zone. A correlation is found between the measured temperature and the resulting joint strength. Moreover, high joint strengths are also seen for welds with short welding times, as far as the temperature is sufficiently high. With this knowledge, a process window can be derived easily in order to produce welds with high strength and short welding times.

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Metadaten
Author:Anton Schmailzl, Benjamin Quandt, Stefan HierlGND, Michael Schmidt
Parent Title (English):Proceedings of LiM2019 - Lasers in Manufacturing (23 June 2019, Munich)
Publisher:Wissenschaftliche Gesellschaft Lasertechnik e.V.
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2019
Release Date:2021/02/04
First Page:1
Last Page:10
Institutes:Fakultät Maschinenbau
Fakultät Maschinenbau / Labor Laser-Materialbearbeitung (LMP)
research focus:Produktion und Systeme
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG