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

Date:2025-07-29   Views:0

(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


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