Abstract: The high casting speed of billet casting machine is the development direction, which can improve the casting machine productivity and better realize the problem of matching with large converter.This paper analyzes several key technologies which have great influence on high casting speed, including high efficiency mould, high precision oscillation device, mold powder and high pressure secondary cold water.The production practice shows that the casting speed of billet casting machine can reach 5.0m/min and the billet quality is good.

Key words: continuous casting, billet, high casting speed