How is cracking formed during solvent debinding? How can this be resolved?

Date：2025-07-29   Views：1001

(Background: To remove as much binder as possible from the green body, degreasing requires an extremely slow heating rate and a long degreasing time, divided into 2 to 3 stages, with each stage removing a different component of the binder.)

During solvent debinding, if the process is not operated properly, parts often develop cracks.

Causes of cracking:  

• Binder expansion  

• Poor adhesion between binder and powder  

• Low binder strength  

• Excessive molding pressure  

• Significant variations in cross-sectional thickness  

Solutions:  

• Change the type or composition of the solvent or binder to ensure sufficient binder strength and uniform blending with the powder  

• Reduce injection speed  

• Reduce molding pressure  

• Lower debinding temperature  

• Modify the design to minimize variations in cross-sectional thickness