HORIZONTAL CONTINUOUS CASTING METHOD OF BRASS AND PRODUCTION OF BRASS BAR

摘要

PROBLEM TO BE SOLVED: To obtain a cast slab having excellent surface smoothness and good workability by immediately executing a specific quantity of push-back to pull-out quantity just after executing the pull-out in one cycle of the pull-out pattern. ;SOLUTION: The push-back is executed so that the push-back quantity (B₁) to the pull-out quantity (P) becomes 0.01P≤B₁≤0.15P. Just after executing the pull-out at the pull-out quantity (P) in one cycle of the pull-out pattern, it is desirable to immediately execute the push-back so that the push-back quantity (B₁) to a cast slab thickness (t) becomes 0.01t≤B₁≤0.15t. Further, it is desirable to regulate the pull-out velocity(PV) in one cycle of the pull-out pattern to 30 mm/sec ≤PV≤50 mm/sec and to execute the pull-out so that the push-back velocity(BV) becomes 5 mm/sec≤BV≤15 mm/sec. Further, at the time of defining A=L/t for a pull-out pitch (L) and the cast slab thickness (t), in the case of being 12 mm≤t≤20 mm, it is desirable to execute the pull-out with the pull-out pitch (L) satisfying A of 0.4 to 0.6.;COPYRIGHT: (C)1999,JPO