Ceramic Core Molding Vibration for Fine Cooling Passage Filling

The mold is subjected to mechanical vibration during slurry introduction, which causes larger particles and fibers to move away from fine feature areas while allowing smaller particles to fill these regions. This vibration separates particles by size and prevents blockages in narrow passages, directly resolving the contradiction between filling fine features and maintaining compositional homogeneity.

The vibration process creates local differences in particle concentration, with finer particles concentrated in areas requiring detailed filling and larger particles excluded from these regions. This local differentiation of particle quality enables proper filling of fine features without compromising overall slurry composition.

Mechanical vibration is applied during vacuum draw to complement the pressure-driven slurry introduction. The vibration prevents larger particles from blocking fine features while the vacuum maintains overall slurry flow into the mold cavity, achieving both efficient filling and precise feature formation.

The patent combines vacuum draw with mechanical vibration into a single slurry introduction process. The vacuum provides the driving force for slurry flow while vibration ensures proper particle distribution, merging two mechanisms to achieve both productivity and manufacturing precision.

Mechanical vibration is integrated into the molding process to prevent matrix inclusions and blockages in internal passageways. Despite adding this step, the process remains relatively simple and can be implemented using standard vibration equipment, maintaining ease of manufacture while significantly improving passageway quality.

The patent changes the physical state and behavior of the slurry by applying vibration during introduction. This parameter change affects particle movement and distribution, preventing defects without fundamentally altering the molding process or requiring complex new equipment.