Lost Foam Pattern
STMMA (Styrene-Methyl Methacrylate Copolymer) foam patterns represent a cutting-edge advancement in evaporative foam casting technology. Unlike conventional EPS (Expanded Polystyrene) patterns, STMMA foam patterns exhibit superior thermal decomposition characteristics, ensuring near-zero carbon residue during vaporization. This eliminates casting defects such as porosity and slag inclusions while achieving ultra-smooth surface finishes.
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Lost Foam Pattern
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Lost Foam Pattern
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STMMA (Styrene-Methyl Methacrylate Copolymer) foam patterns represent a cutting-edge advancement in evaporative foam casting technology. Unlike conventional EPS (Expanded Polystyrene) patterns, STMMA foam patterns exhibit superior thermal decomposition characteristics, ensuring near-zero carbon residue during vaporization. This eliminates casting defects such as porosity and slag inclusions while achieving ultra-smooth surface finishes.
With a shrinkage rate of <0.3% (compared to 0.3%-0.8% for EPS), STMMA foam patterns guarantee dimensional stability for complex geometries. Their enhanced resistance to humidity and temperature variations prevents pattern deformation during storage and coating processes.
Widely used in automotive engine blocks, hydraulic valves, and aerospace components, STMMA foam patterns significantly reduce slag inclusion defects on machined surfaces (both in distribution area and severity) compared to EPS. This innovation optimizes casting yield rates (up to 98%) while reducing post-machining costs by 30-45%.
Partner with us to leverage this material innovation for high-integrity, sustainable metal casting solutions.
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