The Cu Cr alloy with a chromium content of 0.4%￣1.0% processes a good electric and heat conductivity. Strengthened by heat treatment its casting will show a favorable complex mechanical properties. As a new material

the alloy has found its extensive use in electronics industry and electrical equipment in recent years for the electric contact plate

contact ring

clamping part etc. The Cu Cr alloy tends to be oxidized and gas absorbent etc

with a narrow range of solidification and is liable to form shrinkage cavities due to the large shrinkage. All these will bring us the trouble for the production of a superior Cu Cr alloy casting. The authors will discuss the melting and casting technology to produce Cu Cr alloy casting

employing usual melting equipment and molding materials. The electric contact plate withstanding high voltage and current will serve as an example.