High-speed videos of CMT, CSC and DCEN metal transfer modes during WAAM of Ti-alloy

Published: 13-04-2021| Version 1 | DOI: 10.17632/8ck8h6z3wp.1
Contributor:
Dmitry Kurushkin

Description

Three metal transfer modes were applied in the gas metal arc welding for wire arc additive manufacturing of Ti-6Al-4V alloy. Three high-speed videos of the metal transfer process were shot, the utilized transfer modes were: Cold Metal Transfer (CMT) mode, controlled short-circuiting (CSC) mode and a conventional mode at a direct current with the negative electrode (DCEN). The videos are named accordingly to the abbreviations of the metal transfer modes.

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Steps to reproduce

The walls were printed using the WAAM system, which was composed of a Yaskawa Motoman MH24 robot and an EWM Alpha Q 552 welding power source or a Fronius TransPuls Synergetic 3200 welding power source. Ti-6Al-4V alloy was used as both the filler wire and the initial substrate. Filler wire had a diameter of 1.2 mm, the substrate was 8 mm thick. Argon of 99.99% purity was used as a shielding gas, the metal was deposited inside a non-vacuum sealed box with the controlled argon atmosphere. Three walls were printed using CMT, CSC and DCEN metal transfer modes. The CMT was performed using Fronius TransPuls Synergetic 3200 power source, CSC and DCEN were performed using EWM Alpha Q 552 power source. The travel speed was 20 cm/min, the wire feed rate was 4.5 m/min, these parameters did not vary between printed walls in order to compare metal transfer modes. The metal transfer process was shot using a Chronos high-speed video camera and a backlight 40W LED matrix.