The service temperature of inner wall of mould at normal conditions is 250～350 ℃

the mould copperplate should have better thermal conductivity and resistance to deformation

higher high temperature strength

surface precision and wear resistance. The service life of Ag-Cu and Cr-Zr-Cu is longer than that of peroxiding copper and pure copper

The effect of plate coating layer of mould is to avoid copper plate forming star-shaped crack

prevent copper permeating cast billet and increase lubrication and wear resistance of mould. At present main adopted plate coat materials are Ni+Cr

Ni-Co and developed new alloy coating materials. The characteristics and application status are analyzed in this paper.