Pinhole is a widespread phenomenon existing in the thinner aluminum foil. Casting rolling

as an important procedure of aluminum foil blank production

quality of the its blank has very important influence on the pinhole. In this paper

the grain refinement of the casting rolling blank is analyzed

the influence of temperature

cooling intensity

length of roll casting zone

rolling speed and the grain refining agent on the blank grain of aluminum foil are introduced. Selection of appropriate roll casting process parameters for grain refinement and improvement of pinhole has a definite instructive significance for production.