PURPOSE: To provide a cooling roll for producing an amorphous alloy light- gauge strip which prevents the decrease in the water pressure in a cooling water flow passage between an inside roll of a narrow width formed integrally to the cooling role by shrinkage fit and a steel flange enclosing the same and can supply steadily the cooling water by providing fins for preventing the rotation of the cooling water to said flow passage.
CONSTITUTION: A cooling roll 33 is formed wider than an inside roll 34 and is constituted integrally by shrinkage fit to the roll 34. The roll 33 is engraved internally with a cooling groove 39 for forming a cooling water passage 35'. Plural sheets of fins 40 for preventing the rotation of the cooling water are secured to the roll 34 in the cooling flow passage 35" on the outlet side of a steel flange 32. The thermal expansion of the roll 33 is suppressed by the above-mentioned constitution. The ratio in suppressing the thermal expansion in this case is generally about the thickness between the cooling rolls/the radius of the inside roll, thus decreasing to about 1/50 of the ratio in an ordinary case. The amorphous alloy light-gauge strip is thus produced with good accuracy and stability.
ARIYOSHI TOSHIHIKO
YAMATE MINORU
HAITOU KUNITATSU
