Precision Laser Welding

The laser is an excellent tool for welding many materials. It offers many advantages over traditional welding techniques:

• More consistent, reliable joints
• Small heat affected zone (HAZ)
• Deep penetration of precise narrow welds
• Narrow weld profile
• Low heat input
• Minimum part distortion
• No to minimal secondary processing
• High repeatability
• Significantly faster weld rates

These benefits are a result of using a small focus spot size, 0.001" to .04", appropriate gas shielding, well-engineered joint design, and ensuring repeatable fit up of parts. Successful laser welding is also dependent on controlling process variables, such as selecting the correct type of laser for the material and thickness. Reflectivity and conductivity will affect weld quality. Part preparation and cleanliness is also very important, as any contamination in the joint can produce voids and porosity in the weld. The correct combination of these elements is critical for achieving optimum laser welds. Arcor's experience and expertise establishes us as the perfect partner for providing laser welding services.

Lasers typically used for welding are CO2 and Nd:YAG. The choice of laser is determined by material type and thickness, cycle time and weld penetration requirements. There are two types of beam delivery options commonly used when welding: conventional beam delivery and fiber optic cable. Conventional beam delivery, suitable for both Nd:YAG and CO2 lasers, is ideal for 5-axis cutting positioning systems where flexibility and movement of the machine axes cannot be hindered or constrained. Fiber optic delivery is suitable only for welding with Nd:YAG lasers. An advantage of using a fiber for welding is its ability to mount an end effector on a robot, creating a very flexible, low cost platform for welding large complex 3D parts. 3d laser cutting services are also available along with 5-axis cutting.