Abstract: With the speeding-up of electrical steel production lines, the Tenova horizontal shear presents prominent problems such as cutter box displacement, cumbersome blade replacement, difficult hoisting and potential safety hazards under high-frequency shearing conditions. Based on mechanism analysis, three improvement measures are adopted: installing anti-displacement limit device, optimizing integrated hydraulic release system, and designing special guide mechanism for cutter box replacement. Field application shows that the cutter box displacement fault is completely eliminated, and the shearing qualification rate of wide plate increases from 92% to 99.8%. The blade replacement efficiency is improved by 70%, and the hydraulic failure rate is greatly reduced. The number of operators is reduced from 4 to 1～2 persons, and the operation time is shortened by more than 50%, eliminating hoisting safety risks thoroughly. The optimization features low cost and convenient implementation, which can provide reference for function upgrading and efficiency improvement of horizontal shear in electrical steel production lines.

Key words: horizontal cutting device; cutting box displacement; hydraulic release system; cutting box replacement; efficiency optimization