Mineral Casting RHENOCAST - Electromate Industrial Sales Limited

The advantages of mineral casting RHENOCAST ® • 4Shaping and StrengthThe mineral casting process provides an exceptionaldegree of freedom with respect to the shape of the components.The specific characteristics of the materialand of the process result in a comparatively highstrength in conjunction with a significantly lower weight.Economical Dimensional AccuracyIn many instances RHENOCAST ® components are castto the final dimensions because practically no contractiontakes place during hardening. With this, furtherexpensive finishing processes can be eliminated.Integration of InfrastructureThe mineral casting process enables the simple integrationof the structure and additional componentssuch as guide-ways, threaded inserts and connectionsfor services, during the actual casting process.No CorrosionRHENOCAST ® components are resistant against oils,coolants and otherThe Manufacturing of Complex Machine StructuresWhat would be inconceivable with conventional processesbecomes possible with mineral casting: Severalcomponent parts can be assembled to form complexstructures by means of bonded joints.Greater vibration damping for longer tool service livesIn vibration damping, RHENOCAST ® achieves up to 10x better valuesthan steel or cast iron. Thanks to these characteristics, an extremelyhigh dynamic stability of the machine structure is obtained. The benefitsthat this has for machine tool builders and users are clear: betterquality of surface finish of the machined or ground components andlonger tool life leading to lower tooling costs.Good thermal stabilityMineral casting reacts very slowly to temperature changes because thethermal conductivity is significantly lower than metallic materials. Forthis reason short- term temperature changes have significantly lessinfluence on the dimensional accuracy of the machine tool. A betterthermal stability of a machine bed means the overall geometry of themachine is better maintained and, as a result, geometrical errors areminimised.ConclusionMineral casting RHENOCAST ® is not only an alternative to conventionalcast-iron or steel constructions, but in many instances the superiortechnology.It also has a major economic benefit: RHENOCAST ® components areup to 30% cheaper.PrecisionHighly precise reference or supporting surfaces areachieved by further grinding, forming or milling operations.As a result of this, many machine concepts canbe implemented elegantly and efficiently.> Characteristic material values of mineral casting RHENOCAST ®Density2.30 – 2.45 kg/dm3Modulus of elasticity40 – 45 kN/mm2Tensile strength15 – 20 N/mm2Compressive strength100 – 120 N/mm2Bending-tensile strength28 – 30 N/mm2Coefficient of linear expansion 11.5 – 14x10-6 K-1Thermal conductivity1.5 – 2 W/mKSpecific heat capacityca. 1.2 kJ/kgKLog. decrement 0.03 – 0.10Linear contraction after casting approx. 0.3 ‰• 3