Joy-Mark, Inc. and GTP Joymark, LLC offer premium feeding aids to the foundry for directional solidification with greater metal yield and improved casting quality. We offer many types of insulating and exothermic riser sleeve formulations and geometries to meet your specific metal type, modulus requirements, molding application and riser removal needs. Exothermic hot toppings, riser covers and exothermic cores help to maximize the feeding performance of your risers.
Straight riser sleeves from 1” to 42” in diameter with standard heights up to 12” and many taller profiles available.
Neckdowns, blinds / domes and spherical risers offer preferred feeding characteristics with reduced riser contact area.
High Exothermic SPOT Risers available in standard or fluorine free. These products are typically used in high pressure green sand molding lines or where high modulus with lower metal feed volume is required. Specialty sand and metal breakers available for reduced riser removal and cleaning room costs.