include shipbuilding, construction, pipeline supplies (such as oil-country tubular goods), heavy equipment/off-highway, and railroad equipment.
In terms of hybrid welding, Jim Hurley, southeast regional sales manager for Trumpf Inc. Laser Technology Center (Plymouth, MI), also pointed out that the laser not only saves time, but material as well. Many weld joints prepared for welding are V- grooves, and a wide joint is needed for traditional GMAW to get heat energy to the bottom. With laser’s deep penetra- tion, a smaller included angle is needed and hence less fi ller material.
Solid-State Lasers— Power and Multiplexing
Hansen from ESAB noted that while solid-state and fi ber lasers now run up to many 10’s of kW in power, the practical limit of what they would use in hybrid welding is around 12 kW. Beam quality in terms of beam parameter product (BPP) need not be fi ner than 10–12 mm-mrads, in most welding applications. In fact, for “high power” welding applications, from hybrid to remote scanning, 75% or more of most applications require lasers that provide power between 4–6 kW, according to Hurley from Trumpf, with a BPP around 8 mm-mrad or better. For example, a common laser for welding is the Trumpf TruDisk 6002. It provides a near-IR beam at 6 kW with a BPP of 8 mm- mrad. Another plus is that some models deliver their energy through up to six individual fi bers, enabling a single laser to power a number of independent workcells, reducing capital cost. As important as the advent of hybrid welding is, Hurley also noted that remote laser welding remains important. Re- mote welding uses the unique standoff capability of lasers and scanning optics.
Remote welding systems rapidly direct a laser beam over large parts like automotive doors and closures. They weld a num- ber of spots and short seams separated by distance, saving time over traditional spot-welding methods. In many cases, it
#
Productivity Gains
The specific geometry of the Multi-Carb was designed with a large, uneven flute count for a smoother cutting performance that increases tool life and positively impacts cycle times*
* SGS helped an aerospace company
GAIN over 27 days of production
while REDUCING
the cost per part by nearly
78%.
** The Multi-Carb accomplished a tool life of 25 parts with twice the axial engagement where the competitor only obtained 4 parts. This yielded a 625% improvement in tool life and 338% more material removal.
DEFINING HIGH PERFORMANCE MILLING DRILLING ROUTING
www.sgstool.com 330-686-5700 Manufactured in the USA
sgs--4.375x6.875withbleed.indd 1
March 2014 |
ManufacturingEngineeringMedia.com 85
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