Round steel splitting rolling technique
A technology for slitting rolling and round steel, which is applied in the improvement field of round steel rolling process, can solve the unreasonable design of roll pass, cannot effectively eliminate the folded quality defect at the tear of the slitting belt, and cannot be slitted and rolled. problems such as making round steel, to achieve the effect of fast speed, reasonable design, and improved machine-hour output
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[0021] A kind of round steel slitting and rolling process, such as Figure 1 to Figure 10As shown, after the rough rolling, intermediate rolling and finishing rolling stages, the billet is rolled into a parallel rolling piece, and then cut into a round steel rolling piece by a cutting wheel. The roll passes used in the intermediate rolling and finishing rolling stages are sequentially It is flat diamond pass 1, plum blossom square pass 2, dumbbell-shaped pre-cut pass 3, double circular cut pass 4, oval pass 5 and circular pass 6, the above-mentioned passes The structural size of the flat rhombus pass type 1 (in millimeters) is: Bk1=49.05-49.1, H1=24.1-24.5, S1=2.9-3.1, R1≥17; the structural size of the plum blossom square pass type 2 is: Bk2 ≤42.6, H2=22.6-22.9, R2>6.8, S21.2, S3=1.8-2.1, φ=27.7°; the structural dimensions of the double-circular cut pass type 4 are: Bk4=69.1-69.15, bk4=32.02-32.1, Hk4=27-27.05, R4>1.2, S4=2.8-3.1, φ≤38°, 2θ≤60°; the structure size of oval pas...
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