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What is Laser Welding?

Laser welding of plastic parts has established itself as a robust, flexible and precise joining process. It enables highly efficient and flexible assembly from a small-scale production of parts with complex geometries to a high volume industrial manufacturing, where it can be easily integrated into automation lines. This process uses a laser beam to melt the plastic in the joint area by delivering a controlled amount of energy to a precise location. This level of precision in controlling the heat input is based on the ease of adjusting the beam size and the range of methods available for precise positioning and moving the beam.

Advantages of Laser Welding

Particulate-Free

Particulate-Free

 

Bond Strength Virtually That of Parent Material

Bond Strength Virtually That of Parent Material

 

Minimal Thermal or Mechanical Part Stress

Minimal Thermal or Mechanical Part Stress

 

Micron-Level Precision and Control of Haz

Micron-Level Precision and Control of Haz

 

No Damage to Surrounding Material or Internal Components

No Damage to Surrounding Material or Internal Components

 

Smaller Parts

Smaller Parts

 

High Volumes and Automation

Highly Repeatable, Excellent for High Volumes and Automation

 

Aesthetically Pleasing Welds

Aesthetically Pleasing Welds

 

Quality Control

Quality Control

 

Hold Tight Tolerances

Hold Tight Tolerances

 

3D Joints and Radial Welds

3D Joints and Radial Welds

 

Low Total Cost of Ownwership

No Consumables + Low Failure Rate = Low Total Cost of Ownership

 

1 Micron Laser welding

vs

2 Micron Laser welding

GLAVOMETER SCANNER

  • Precise control delivers consistent weld quality
  • Repeatability (+/- 5 microns)
  • Beam spot size 
    •  1 µm: <0.5 mm
    • 2 µm: 0.3 mm
  • Any desirable pattern
  • Non-Contact Process
  • Lower Total Cost of Ownership
 

Types of Laser Welding Process

Contour Welding

In the case of contour welding, a focused laser beam moves sequentially along the welding seam, melting it locally. Due to the geometric conditions, the welding volume remains small and so the melt does not escape. Relative movement is achieved through the motion of the com-ponent, the laser, or a combination of the two.  

Quasi Simultaneous

Two scanner mirrors deflect the laser spot and guide it along the welding contour at a very high speed. The joining surface is traversed several times per second, whereby the laser beam effectively heats and plasticizes the entire welding seam at the same time. Part tolerances can be melted off forming a welding bead, as both joining parts are pressed together during the welding process.

Other Welding Process

ULTRASONIC PLASTIC WELDING

VIBRATION WELDING

 

SPIN
WELDING

INFRARED
WELDING

HOT PLATE WELDING

 

ULTRASONIC FILM & FABRIC PROCESSING

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