Study on Process Parameters and Lap Ratio for Laser Cladding IN718 Repair of EA4T Steel

Area of Science:

• Materials Science and Engineering
• Manufacturing Technology
• Surface Engineering

Background:

• Laser cladding is a valuable additive manufacturing technique for surface strengthening and repair.
• It offers advantages like low heat input and minimal dilution compared to traditional methods.
• Repairing components reduces material waste and extends service life.

Purpose of the Study:

• To investigate the effects of laser power, scanning speed, and powder feed rate on melt pool dilution and shape factor.
• To determine optimal process parameters for laser cladding IN718 onto EA4T steel.
• To establish the optimal theoretical lap ratio for effective repair.

Main Methods:

• Utilized orthogonal experimental design to study process parameter effects.
• Analyzed melt pool cross-sectional morphology and internal defects.
• Performed theoretical lap calculations and experimental validation.

Main Results:

• Identified non-linear relationships between process parameters and molten pool morphology.
• Determined optimal laser cladding parameters for IN718 on EA4T steel.
• Achieved an optimal theoretical lap ratio through experimental validation.

Conclusions:

• Comprehensive consideration of combined process parameter effects is crucial for optimizing laser cladding.
• The study provides insights into achieving high-quality repairs with minimal defects.
• Optimized laser cladding enhances component performance and promotes sustainable manufacturing practices.