Influence of the Casting Method to Mechanical Properties of Ni-Cr Alloys for Crown and Bridge

Abstract

We measured Tensile Strength and Vickers Hardness with using testpieces casted Ni-Cr Alloys by melting cast technic (high frequency melting in the argon atmosphere, atmospheric high frequency melting, melting by blowpipe with natural gas and oxygen).
And we gained next conclusion after appraising qualitative deterioration of the alloy in quantity by cotributive percentage of casting defect.