In industries where production continuity is critical, the availability of spare parts is a strategic challenge. During maintenance operations, some components may require unexpected replacement, while conventional manufacturing lead times are often incompatible with operational constraints.
To explore alternatives to traditional manufacturing processes, EDF commissioned IREPA LASER to assess the potential of laser powder Directed Energy Deposition (DED) additive manufacturing for producing components intended for maintenance applications.
Assessing the feasibility of laser powder DED
The objective of the project was to determine whether the laser powder DED process could meet the stringent requirements of the nuclear industry while providing greater responsiveness during maintenance operations.
Unlike conventional manufacturing methods, which can require several weeks depending on component complexity, additive manufacturing offers the possibility of producing parts quickly while significantly reducing material waste.
To address this challenge, IREPA LASER's teams implemented a step-by-step qualification approach for the process.
A methodical approach to process qualification
The development was structured around three key stages:
- Characterization of the metal powder and definition of the process operating window;
- Manufacturing of test specimens to validate the mechanical properties achieved;
- Development of the manufacturing strategy followed by production of the final component using the laser powder DED process.
This methodology ensured that each stage was validated before manufacturing the final part, guaranteeing full control of the process.
Promising results
The study successfully demonstrated the feasibility of this approach for this type of industrial application.
Key achievements include:
- A component manufactured in just 2 hours and 50 minutes;
- A material efficiency of 89% of the deposited powder;
- Successful validation of the process feasibility for this component;
- Significant potential for reducing manufacturing lead times during maintenance operations.
These results highlight the ability of laser powder DED additive manufacturing to meet industry's demand for rapid response while maintaining high quality standards.
A technology supporting industrial maintenance
This project demonstrates the growing value of additive manufacturing for maintenance applications, particularly in industries where equipment downtime represents a major economic cost.
Drawing on its expertise in laser process development and its in-house designed laser powder DED deposition head—capable of deposition rates of up to 185 cm³/h—IREPA LASER supports manufacturers in evaluating, optimizing, and industrializing innovative manufacturing solutions.
Beyond technological performance, this work demonstrates the key role that laser-based processes can play in improving the availability of industrial facilities by delivering more agile manufacturing solutions tailored to today's competitiveness challenges.
By reducing production lead times and enabling more efficient use of resources, additive manufacturing continues to establish itself as one of the key enabling technologies of the factory of the future.
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