Product category:
Welding, cutting and adhesive bonding
News Release from: TPS-Fronius | Subject: MAG-TimeTwin process
Edited by the Processingtalk Editorial
Team on 05 June 2003
Economical welding of plated sheets
In addition to economic advantages compared to solid material, an innovative method of welding corrosion-resistant composites now ensures a much higher level of cost-effectiveness
The plating of steel sheets has gained more and more importance, not only in the field of chemical equipment engineering, but also in environmental and offshore technologies, as well as in container construction In addition to economic advantages compared to solid material, an innovative method of welding corrosion-resistant composites now ensures a much higher level of cost-effectiveness
This article was originally published on Processingtalk on 28 Feb 2003 at 8.00am (UK)
Related stories
Compact class makes welders dreams come true
More compact performance, lower noise level, more stable arc and easier operation than conventional welding devices are the features of the new TIG welding systems by TPS-Fronius
Cleaning welding torches
The innovative electro-magnetic way to clean welding torches has a positive effect with regard to quality and economy: non-contact and save money at the same time.
Firstly, the welder applies the similar-type unalloyed carrier material.
The user can use his innovation to fill the groove remaining in the acid-resistant cladding layer, using the powerful MAG-TimeTwin process.
Welding tests carried out at Fronius International in Austria clearly showed that surface quality created has a corrosion resistance comparable with that of the clad material.
Further reading
Stick with your welding characteristic
Electrode welding units with resonant intelligence: the innovative series of TransPocket machines are thrusting forward into brand-new welding territory, with a regulated output characteristic
Multi-talented welding equipment
Two wires, three welding processes and lots of features are built into one machine, with the new welding multi-talent TransPuls Synergic 2700 Duo-TIG from TPS-Fronius
The welding of two wire electrodes using the MAG-TimeTwin process, which is a variant of tandem welding, provides for profitability thanks to both high deposition rates and welding speeds.
Recent welding tests have proved that the process is suited for corrosion-resistant deposited materials, such as the highly acid-resistant alloy B2.
The thicker the steel sheets that are coated with this alloy, the greater the savings in terms of costs - up to 80% - compared to the solid material.
When welding the plated sheets, the workers add the substrate first.
Subsequently, the filler metal is inserted into the remaining groove between the approx 4 mm thick platelayers, using the fully mechanised TimeTwin process (Supplementary Plating).
Specialists have optimised the welding parameters for alloy B2, provided that the groove filling is performed in three similar layers with a two-bead covering layer.
Thanks to the multiple-layer construction, the dilution ratio is kept to a minimum.
Thus, the final covering layer, which is in contact with the medium, consists of almost pure filler metal and the resistance to corrosion remains preserved.
Tests carried out with aggressive hydrochloric acid have proved that the surface quality of the groove filling is as acid-resistant as the alloy B2.
The TimeTwin-process melts both wired electrodes almost without spatter.
With regard to the welding seam, hardly any difference can be observed from the manual TIG process.
By analogy, this can also be applied to the excellent centreline solidification cracking behaviour of the supplementary plating.
However, up to 8 kg/h deposition performance and welding speeds of up to 70cm/min speak in favour of the Time-Twin process.
• TPS-Fronius: contact details and other news
• Email this article to a colleague
• Register for the free Processingtalk email newsletter
• Processingtalk Home Page
Search the Pro-Talk network of sites
