- Big gap closing capacity
- Multi layers possible
- Wide welding gap filling capacity ( 2 x 1.6 mm wire = 2.5~3.0 mm gap filling capacity)
- Extremely high welding speeds
- Extremely high deposition rate
- Can be used on thin and thick sheets
- High potential for cost savings
- Easy to operate
- Two separate wire feeders but each wire can be controlled independently
- When not welding in dual welding mode, both wire feeders can be used to be prepared for a differeent material (ex stainless steel on 1 and alumiunium on 2) so that the changeover from one material to another is VERY short.
Process Benefits of Dual wire feeding
The Dual Wire Laser Welding process has a wide operating range that can be generally segmented into two catagrories addressing high speed sheet metal welding and heavy plate welding. On sheet metal, the process is often operated at travel speeds in excess of 250 cm/min on thin gauge material. On heavy gage material, weld metal deposition rates exceed drastically the standard laserweldin results.
High travel speed applications
The ability to distribute the total welding enrgy across two separate welding wires provides unique benefits for high-speed welding. When pushed to increase travel speeds on thin gauge metal components in industries such as automotive, tank and general sheet metal fabrication, welding operations are faced with one or two quality issues, either burn through or lack of weld metal follow characteristics.
The double Wire process addresses both of these speed-limiting issues. The ability to distribute the necessary welding energy over two welding wires allows to generate needed penetration while on the back edge of the weld puddle creating added fill. This double wire behavior in the shared weld puddle provides excellent gap filling characteristics. Improved gap filling capabilities are of particular value to industries processing high volumes of stamped or formed parts.
High deposit rate applications
The Dual wire feeding process can on average represent a 30-80% increase in deposition potential when compared to conventional single-wire processes. The Dual wire process typically employs medium diameter wire. As higher welding energy is applied to the small diameter electrodes (1,2 - 1,6mm) the wire melt-off rate rises exponentially. The resulting wire melt-off rate for a given energy draw is a little lower for dual wire welding than that of a single large diameter electrode. This higher melt-off rate potential and lower energy draw provides unique benefits for the heavy plate fabricating industry. The high deposit rate obviously provides the means for improved production throughput. The lower heat input can be used effectively to reduce plate distortion and time between passes when controlling inter-pass temperature on mult-pass welds. The process is capable of producing x-ray quality welds with excellent mechanical properties.