Research Effect of Vibration Parameters on Assisted Orbital TIG Welding for Stainless-Steel Tube

Abstract

The Vibration Assisted Welding shown the effective solution to increase penetration, microstructure, and mechanical properties of the weld metal of Stainless-Steel 304 (SS304). Thus, the experiment was made a vibration on the surface of the SS304 tube by a piezo actuator during the Orbital TIG Welding using metal filler. The TIG welding parameters were set for purpose of creating a full penetration and different ultrasonic vibration parameters (Amplitude of voltage at 2V, 4V, 5V, Frequency at 400Hz, 500Hz, 600Hz). The bead geometry, mechanical properties, and the microstructure of tube welds was discussed in this paper. The result illustrates that microstructures of the weld zone are the finer and uniform, which observed in samples assisted by the vibration. The vibration process has significantly affected the mechanical properties of butt welds using Orbital Welding process. The highest tensile strength is 534 MPa at 2V for voltage amplitude and 600Hz for frequency, which is higher than specimen without vibration is 408MPa. It is also found that the hardness slightly increases with the various frequency from 200Hz to 600Hz at 2V for voltage amplitude.

DOI: https://doi.org/10.52783/tjjpt.v45.i03.7759