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Deep penetration welding

Deep penetration welding requires extremely high power densities of about 1 megawatt per square centimeter. In this process, the laser beam not only melts the metal, but also produces vapor.

Beim Tiefschweißen entsteht eine tiefe Dampfkapillare, das Keyhole.

The dissipating vapor exerts pressure on the molten metal and partially displaces it. The material, meanwhile, continues to melt. The result is a deep, narrow, vapor-filled hole, or keyhole, which is surrounded by molten metal. As the laser beam advances along the weld joint, the keyhole moves with it through the workpiece. The molten metal flows around the keyhole and solidifies in its trail. This produces a deep, narrow weld with a uniform internal structure. The weld depth may be up to ten times greater than the weld width, reaching 25 millimeters. The laser beam is reflected multiple times on the walls of the keyhole. The molten material absorbs the laser beam almost completely, and the efficiency of the welding process rises. If CO2 lasers are used for welding, the vapor in the keyhole also absorbs laser light and is partially ionized. This results in the formation of plasma, which puts energy into the workpiece as well. As a result, deep penetration welding is distinguished by great efficiency and fast welding speeds. Thanks to the high speed, the heat-affected zone is small and distortion is minimal. This process is used in applications requiring deeper welds or where several layers of material have to be welded simultaneously.


TruLaser Weld 5000
TruLaser Weld 5000

A turn-key system for automatic laser welding

TruLaser Cell Serie 1000, Wirtschaftlich Laserrohrschweißen
TruLaser Cell Serie 1000

Cost-effective laser tube welding


Pulsed peak power in the multi-kilowatt range for spot welding and seam welding

TruFlow, Zuverlässig, robust und vielfältig einsetzbar

Reliable, robust, and versatile

TruFiber Faserlaser

Precision laser for delicate work

TruDisk, Höchstleistung aus der Scheibe

Maximum performance from the disk

TruLaser Cell Series 7000, Immer optimal ausgerüstet
TruLaser Cell Serie 7000

Always perfectly equipped

TruDiode, der energieeffiziente Diodenlaser

The energy-efficient diode laser


Alvin Tan
Laser Technology Sales
Fax +65 6571 8001
Service & contact