Technological tests to assess the impact MATERIALS FORMING mold in the surface roughness of castings and the probability of formation Prigara

摘要

Technological sample relates to the field of foundry and may be used for research or in shop laboratories for rapid assessment of the influence of formulation of the molding or core sand, natirochnoy paste or ink for the mold and core to form a cast surface roughness and the likelihood of metal penetration. Process sample is a mold comprising a lower and an upper mold half. According to fret in the lower mold half shells are placed for the installation of samples studied molding materials. The upper mold cavity is a truncated cone with the possibility to change the height for varying the mass of the filling alloy formed model from the set of disks are centered relative to one another model of the riser. On kontrlade upper mold naraschalki additionally installed to produce the desired metallostatic head in the mold. Provided a rapid assessment of the influence of the complex such diverse factors as the composition of molding or core mixtures, compositions for dyeing the cavity of the mold and formulations for dyeing or polishing rods surfaces metallostatic head mass poured alloy, the thickness of casting wall temperature of the alloy, the formation of roughness casting surface and the likelihood of burn-the need for rapid analysis in a shop (factory) laboratories. Substantially expanded processing capabilities and reduced complexity of device fabrication.