LaserTherm
Lasers for Industrial
Applications
CZ|EN
Laser hardening

Laser hardening

No or minimum need
for refinishing work

Laser hardening

Laser hardening

On-line control of processing temperature

Laser hardening

Laser hardening

High reproducibility
for mass production

Laser hardening

Laser hardening

Processing only where desired

Laser welding

Laser welding

Small heat-affected zones

Laser welding

Laser welding

Smooth, symmetrical welded
joint free of porosities

Laser welding

Laser welding

High processing stability and speed

Hardness measurement

Hardness measurement

by the UCI method measurement
in hard-to reach spots

Hardness measurement

Hardness measurement

by the UCI method measurements
of the welds and thermally processed parts

Laser systems

Laser systems

Design of technological processes
and optimization of process parameters

Laser systems

Laser systems

Delivery and implementation
of customized laser systems

Laser welding

Laser weldingLaser welding is one of the latest techniques for joining various types of materials. LaserTherm uses laser systems for the welding of a broad spectrum of metal materials with optimum results. Laser welding is suitable for the welding of structural steels, stainless steels, aluminium, titan and copper.

A laser beam is used primarily for the welding of components with high demands on welding speed, precise and quality welds free of cracks, impurities or pores, and low thermal deformation of surrounding material. High processing speed, stability, easy implementation of the automated welding process and possible on-line quality check of the final weld make this technique very popular in the field of industrial applications.

Laser welding falls into two categories, depending on how the heat induced by a laser beam is conducted to the welded material.

Heat conduction welding

In heat conduction welding the laser beam melts thin surface layers of joined materials by direct absorption of laser irradiation. The molten and mixed materials flow together and solidify to form the weld. The weld depth in this type of welding is just up to 2mm.

Keyhole welding

This technique is based on the formation of a capillary inside the joined materials through the local heating effect of a laser beam with sufficient power density (on the order of 106 W/cm2). Materials inside the capillary are intensively heated until they melt and evaporate. The collapse of a capillary is prevented by the balance between hydrostatic pressure, melt surface tension and vapour tension inside the capillary. Multiple reflections of the laser beam inside the capillary lead to a deeper penetration into the material. This technique can be used to weld steel up to 10mm thick.

Main advantages of laser welding:

  • Small heat-affected zones resulting in low rates of deformation
  • Smooth, symmetrical welded joint free of porosities
  • High processing stability and speed
  • Thin foils and sheets up to 10mm thick can be welded
  • Reduction of production and acquisition costs
  • High reproducibility for mass production
  • High quality of final weld with no or minimum need for refinishing work
  • Adjustable power density in relation to joined materials

Contact

LaserTherm spol. s r.o.
Tylova 1/57
316 00 Plzeň

Phone: +420 373 700 270
Fax: +420 373 700 273
E-mail: info@lasertherm.cz

Contact form

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