SUMMARY
Hastelloy is prone to cracking during laser welding due to thermal expansion issues, particularly when welding dissimilar materials like stainless steel 304. The primary technique to mitigate cracking involves creating an interference fit between the components, allowing tension to counteract expansion forces. Successful welds observed from other laser companies featured smooth, mirror-finish joints, likely achieved through high-frequency rates or continuous beam welding. Understanding these factors is crucial for effective laser welding of Hastelloy.
PREREQUISITES
- Understanding of laser welding techniques and equipment
- Knowledge of material properties, specifically Hastelloy and stainless steel
- Familiarity with thermal expansion principles in welding
- Experience with interference fit design in mechanical assemblies
NEXT STEPS
- Research laser welding parameters for Hastelloy, including power settings and beam types
- Explore techniques for creating interference fits in welding applications
- Study the effects of thermal expansion on weld integrity in dissimilar materials
- Investigate high-frequency laser welding methods and their applications
USEFUL FOR
Weld engineers, materials scientists, and professionals involved in laser welding processes, particularly those working with Hastelloy and dissimilar metal joints.