Who Can Benefit?

  ·         Manufacturing engineers     

·         Production and process engineers

·         Mechanical and electrical engineers

·         Design, research, and development engineers

·         Operations managers

·         Production, maintenance and set-up personnel

·         Laser operators

·         QA/QC professionals

·         Laser system integrators

 Course Outline:

Industrial Lasers

• CO2 lasers
• Nd:YAG lasers
• Solid-state lasers
•  fiber lasers
•   Direct diode lasers (DDL)
•   Temporal profiles
•  Spatial profiles
•  Factors affecting laser selection
• Maintenance considerations

Laser Beam Delivery

•   Optics
•   Fiber optic delivery systems
•   Remote welding systems
•  Power losses
•   Monitoring beam performance

 Weld Geometry

•  Nomenclature of the weld
• aspect ratio
• porosity
•   Joint design
• butt welds
•  lap welds
• fillet welds
• Design criteria
• Fit-up tolerances

Laser Welding

• Material-energy interactions
• Power density control
• Shield gases
•         selection and delivery
•           flow rate
•           direction

Calculations

•           spot size
•        power density
•           sizing the laser

Pulsed (Power) Laser Welding v. Continuous Power (CW) Laser Welding

•  Penetration
•  Power density
•  Pulse shape
•  Power ramping
•  Temperature control

Welding Dissimilar Metals

•  Power density
•  Heat-affected zone
•  Fusion

Laser Additive Manufacturing (LAM)

•  Overview
•  Laser selection
•  Powder selection
• Power determination
•  Pitfalls and how to avoid them
• Learning opportunities

Tooling

•  Clamping
•  Heat sinking
•  Shield gas

Laser Safety

•  Laser classification
• Beam hazards
•  eye and skin hazards
•  Non-beam hazards
• electrical
• chemical
•   fire
• explosion
• Control measures
• safe operation
• eye and skin protection

Class Exercise: System Integration

•  Create a process and design a laser system from concept to final production

Laser Weld Inspection

•  Pre-process
•  machine vision
• In-process
•  Post-process
• Lab evaluation

Laser Weld Defects

•  Nomenclature of weld defects
•  Causes of weld defects