Performance evaluation of permanent steel mould for temperature monitoring during squeeze casting of non-ferrous metals
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Date
2014
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Pacific Journal of Science and Technology
Abstract
Permanent steel mold was designed, machined and evaluated by monitoring the temperature of squeeze cast aluminum and brass rods on a Vega hydraulic press. The operation was performed with and without pressure on the cast specimen at pouring temperature of 700 0C and 980 C for aluminum and brass metals, respectively. The solidification rate (temperature with time) was monitored with a three-channel digital temperature monitor data logger while the tensile strengths of both samples were also determined. The results showed an increase in the solidification rate for both samples with increase in the applied pressure. The maximum solidification rate for aluminum was obtained at an applied pressure of 127 MPa and 95 MPa for brass. The tensile strength of both samples increased with increase in applied pressure. The maximum tensile strength of 34.38 MPa was obtained for aluminum at applied pressure of 127 MPa and 80.21 MPa for brass at an applied pressure of 95MPa. Above these values there was no significant increase in the tensile strength with increase in applied pressure. The results obtained were similar to that already established in the literatures which make the machined permanent steel mold suitable for squeeze casting of non-ferrous metals
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Keywords
permanent mold, squeeze casting non-ferrous metal, non-ferrous metal, solidification temperature, heat transfer