SME CAM2: CFD Simulation of the Debinding Process for a Metal Binder Jetting Green Part

Purpose and goal:

The project is carried out as an SME project within the framework of Vinnova´s Competence Centre CAM2and aims to address debinding challenges in Metal Binder Jetting using CFD simulations. Goals: 1.Optimal Debinding Cycle: Predict the optimal debinding cycle to prevent defects such as cracks or blisters.

2. Debinding Reactions: Understand the debinding reactions and the impact of varying oxygen levels. 3. Gas Flow Determination: Determine the necessary gas flow relative to the part size. Approach:

Develop and simulate a chemical reaction mechanism using Simtec software, laying a foundation for future process optimization. Expected results and effects:

The project aims to optimize the debinding process for Metal Binder Jetting by reducing defects such as cracks and blisters in the green parts. Using CFD simulations, we will understand the chemical reactions and gas flow requirements, leading to a more efficient and controlled process. The results should contribute to improved mechanical quality of the final products and increase overall cost-efficiency and scalability in production.

Approach and implementation: The project is feasible through a structured plan: Development of Reaction Models: Create initial reaction models based on literature and data.

Formulation of Chemical Reaction Mechanism: Develop detailed mechanisms for CFD simulations to calculate gas flow, diffusion, heat and mass transfer, and chemical reactions.

Establishment of CFD Simulations: Use Simtec software to simulate temperature profiles and pressure buildup to optimize the debinding process. The goal is to improve efficiency and reliability in MBJ technology.