Product category:
Welding, cutting and adhesive bonding
News Release from: TPS-Fronius | Subject: Puls-Mix
Edited by the Processingtalk Editorial
Team on 04 July 2008
Puls-Mix integrates CMT and pulsed arc
welding
The new process Puls-Mix version from Fronius makes any required value in the energy range between CMT and pulsed arc available to welders
CMT (Cold Metal Transfer) has revolutionised welding applications Its advantages include lower heat application and less distortion, extremely stable arc control, exact dosage of droplet detachment, prevention of splatter, thinner seams - even with coated sheet metal, as well as the ability to weld metals of different types or thicknesses
This article was originally published on Processingtalk on 11 Apr 2008 at 8.00am (UK)
Related stories
A decade of digital data processing in welding
In 1998, a new type of system control revolutionised conventional arc welding technology by using digital instead of analogue signals: a PC environment now acts as a virtual control station
Innovation in the plasma arc, at the NEC
The prestigious MACH 2008 event at the NEC allows TPS - Fronius to showcase a wide range of equipment used in industry, from construction to chemicals, from manufacturing to offshore engineering
Until now there was an upper limit to the power range.
Combining it with pulsed arc technology removes this limitation.
The new process Puls-Mix version from Fronius makes any required value in the energy range between CMT and pulsed arc available to welders.
In addition there is increased process stability even with "pure" pulsed arc operation thanks to the advantages of the CMT process control technology.
Fronius and pilot users have placed a priority on testing the welding of critical 0.5 to 3.0 mm thick CrNi steel and aluminum alloys as preferred fields of application.
Successful tests were carried out on butt, overlapped, fillet, corner and flanged welds.
In contrast to other processes, the main advantages lie in the easy control of the heat input and the very stable arc.
The user can select the heat input almost continuously over the entire range of CMT and pulsed arc welding.
Because of this, the zone affected by the heat for the mixing of materials, as well as the cross-section and the shape of the weld can be deliberately controlled.
Or: the heat input can be varied with the same welding performance.
This simultaneously removes the power limits of CMT while retaining its advantages.
The reversal of the wire movement remains the typical and unique feature of the CMT process.
Here, the control system utilises the direct mechanical contact of the wire with the surface of the workpiece to precisely determine the distance and therefore the length of the arc.
For example, 1 CMT cycle every 100 milliseconds between the pulsed arc cycles is sufficient to control the length of the arc.
Conventional electrical measuring methods by means of the arc voltage are easily distorted by unwanted conditions such as surface contamination.
This is a thing of the past for Puls-Mix users.
• 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
