Withdrawal and straightening machine and square-round billet continuous casting machine

Abstract

The invention provides a withdrawal and straightening machine and a square-round billet continuous casting machine. The withdrawal and straightening machine comprises a withdrawal and straightening machine frame, an upper roll, a lower roll, a driving device and a pressing device; the lower roll is fixedly arranged at the corresponding position of the withdrawal and straightening machine frame, the upper roll can move relative to the withdrawal and straightening machine frame in the vertical direction, and the upper roll and the lower roll are both flat rolls; the driving device can drive theupper roll to rotate; and the pressing device is arranged on the withdrawal and straightening machine frame and can drive the upper roll to move downwards in the vertical direction. The withdrawal andstraightening machine and the square-round billet continuous casting machine have the beneficial effects that the pressing device is arranged, the upper roll and the lower roll are both arranged to be the flat rolls, the withdrawal and straightening machine can achieve soft pressing production of square billets, meanwhile, the flat rolls also can be suitable for normal production of round billets, soft pressing technological production of the square billets is achieved, and the purpose of round billet production can be achieved.

Description

technical field [0001] The invention relates to the technical field of continuous casting in steel production, in particular to a tension leveler and a square and round billet continuous caster. Background technique [0002] Some domestic steel mills use square and round billet continuous casting machines for billet production. This casting machine can produce square billets and round billets at the same time. This type of model generally uses slotted fixed sections and slotted tension levelers for production, which is beneficial to The ellipticity of the round billet and the prevention of deviation of the round billet, but with the improvement of the quality requirements of the billet, the segregation and porosity of the billet center will seriously affect the performance of the steel, causing a series of quality problems. The slab soft reduction technology can compensate the solidification shrinkage of the slab by applying pressure near the end of the liquid core of the co...

AI Technical Summary

Problems solved by technology

However, the drawing and leveling machines of the square and round billet continuous casting machines in the prior art are all slotted structures, which is inconvenient for light reduction, resulting in the inability to produce high-quality billets

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