Pre-straightener for medium and thick plates

Abstract

The invention discloses a pre-straightener for medium and thick plates, and relates to a thermal straightener. The invention solves the problems that the conventional thermal straightener has an unreasonable structure, is provided with a large number of rolls and has overhigh straightening force. The thermal straightener is characterized in that: a frame is fixed on a foundation through foundation bolts, a fast screwdown system is arranged on the upper part of the frame, and a balancing device is connected with the frame and a movable beam through hinged earrings respectively; an outlet edge roll lifting system is arranged inside the outlet side of the frame, and is connected with outlet edge rolls of a five-roll system device through a screw elevator; a high-efficiency cooling system is arranged inside the five-roll system device and on the upper part of the movable beam, and is connected with an external water source through a pipeline; a fast roll replacement device consists of a roll system lifting device, a connecting shaft positioning and clamping device, and a roll system dragging device; and a main transmission device is arranged on the foundation, and is connected with the five-roll system device through a universal spindle. The thermal straightener can continuously pre-straighten hot-rolled high-temperature steel plates; and equipment guarantee is provided for the progress of a medium and thick plate production process and the development of novel varieties of steel.

Description

technical field [0001] The invention belongs to steel rolling machinery, in particular to a hot straightening machine in the production of medium and thick plates. Background technique [0002] With the changes in market requirements and the emergence of new processes and new technologies, more and more of the medium and heavy plate production lines need to be configured to provide pre-straightening equipment for rapid cooling devices—pre-levelers to improve rapid cooling. safety and reliability. [0003] Existing hot straightening machines are generally nine-roll or eleven-rollers. Since the distance between the working rolls is small and they all have backup rolls, it is impossible to arrange an external cooling device. Therefore, the hot straightening machine after the rolling mill is only It can be arranged after the rapid cooling device; coupled with the large number of rolls, the temperature of the steel plate after rolling is relatively low, the yield strength of the...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a pre-leveler for medium and thick plates, which can solve the problems of unreasonable structure, large number of rolls and excessive straightening force in the existing thermal leveler, so as to Continuous pre-straightening of high-temperature steel plates provides equipment guarantee for the progress of medium-thick plate production technology and the development of new types of steel

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