SM copolymer casting block

Benefits

• SM blocks allow the production of complex models with a high level of casting quality.
• The large-sized models production simplifies the assembly of complicated products and reduces the number of gluing operations.
• Provides more options and flexibility to make changes, model updates.
• Provides a reduction in production costs in comparison with the traditional processes of casting of cold-box and investment casting.
• Easily processed with hand tools and 3D milling machines.
• SM block processing does not require changing the LFC technology using conventional polystyrene materials.
• The special formula of STMMA solves the main problems of  casting defects occurrence:
  • Carburization defects prevention.
• The carbon content in SM block is 62%, while EPS - up to 93%.
• SM will significantly reduce cementation defects when casting steel / ductile iron, and reduce carbon emissions.
• SM gasification temperature is usually 50℃ lower than EPS (STMMA - 1400℃ - 1450℃, EPS - 1460℃ - 1500℃). It helps the foundry to save energy consumption about $50 - $100 per ton of castings.
• Molecular bonds break down orderly during STMMA burning, so liquid low molecular weight residues are formed in the process of destruction.
• EPS molecules are destroyed randomly, and the process is accompanied by the formation of tarry residues.
• The absence of flame retardants in the composition provides a low flash point.
• It improves the quality of castings, eliminates or minimizes the subsequent machining of cast products.