Heat Curing Processes

Molding sand hardening in these technologies occurs as a result of warming of sand and resin mixture, or more often by contact of this mixture with warmed pattern system. All processes of this type assure good dimensional accuracy, provided that good-quality patterns (metal), which can be very expensive, are used. On account of this, processes with hardening at high temperature are applied for producing cores of limited dimensions, mainly in the mass production. Their application, widely popularized for years, is presently in a falling phase, since they are being substituted by technologies where hardening is performed by a gaseous factor, less energy-consuming.