SM-FD copolymer casting block

Benefits

• SM-FD 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-FD block processing does not require changing the LFC technology using conventional polystyrene materials.
• The special formula of STMMA-FD solves the main problems of  casting defects occurrence:
  • It has great advantages in solving problems with defects in wrinkling, unevenness in the process of aluminum casting, when used in iron castings with the formation of excess secondary (shiny) carbon, as well as with a defect in porosity.
• The carbon content in SM-FD block is 82%, while EPS - up to 93%.
• SM-FD will significantly reduce cementation defects when casting steel / ductile iron, and reduce carbon emissions.
• SM-FD gasification temperature is usually 50℃ lower than EPS (STMMA-FD - 1450℃ - 1480℃, 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.