CMT wins the championship
Intelligent welding and brazing methods: faster, higher and farther.
In October 2004, Fronius introduced the revolutionary welding method "cold metal transfer" - CMT. In less than a year, the CMT process has achieved greater breakthroughs in many applications: faster welding speeds, higher product quality, better bridging capability (compared to traditional arc welding), and less distortion , uniform weld, and no splash. CMT is also suitable for some small-scale companies to establish automatic welding workstations to produce large quantities of products.
“We now believe that the CMT process will bring greater business opportunities to our products,†said Dr. Hiroshi, director of the Yamaha Motorcycle R&D Center in Japan. His colleagues and production department of the German automotive industry also agreed with him. Some have even The CMT process is listed on the sheet production plan:
1) connecting thick plates and thin plates, such as 0.4mm and 2mm stainless steel plate corner connections;
2) Switchgear industry, generally 2mm thick board;
3) Aluminum tube with 2mm wall thickness welded on 4mm steel plate;
4) CMT brazing is used in the welding of luxury car bodies.
All used people highly recognize the quality and process economy of CMT welding. Welds are even and uniform; thin-plate assembly gaps can be applied in excess of 1mm; in terms of car body brazing, the heat of CMT brazing can be reduced by 20-30% compared with MIG brazing, deformation is greatly reduced, and the probability of rework after welding is also reduced.
In addition, the CMT welding process is completely spatter-free. Compared to ordinary welding and brazing, the welding time is saved by 90%. This represents an average saving of 2 hours for the welding of automobile bodies in the global automotive industry. This can be an important factor that needs to be taken into consideration when the factory site is selected, even as industrial competition becomes increasingly fierce.
Related reference materials:
The obvious difference between the CMT process cold metal transition and the ordinary gas shielded welding is: very little heat input, because the new intelligent process will procedurally control the welding wire's "swinging" movement, the welding wire moves and combines with the arc transition. Up, when the arc is short-circuited, the welding wire pulls back and the current drops to almost zero, which is conducive to the accurate transition of the droplet, and then the current is increased and the wire is sent forward. This wire feed reciprocating frequency reaches 70HZ, this droplet process is equivalent to hot and cold alternation.
related pictures:
Figure 1: The picture shows the switch cabinet for the telecommunications industry, with no distortion and splashing
Fig. 2: The picture shows the brazing of the car body CMT with faster welding speed, no spatter, extremely narrow welds