Sheet shearing machine

There are certain advantages in the process of using hot shear for thin slab, such as less cutting loss no sawdust. However, the shearing times of hot shear are low, single shear can meet the requirements, the cutting edge length of general shear is enough for multiple side-by-side cutting. Therefore, the thin slab shear line has two forms as follows:

(1) Multi shear single shear

With this process, the number of shears is more, the production capacity is higher than that of one single shear, but it still can meet the output of rolling mill. Moreover, the cut slab is easy to get stuck in the middle of the cutting edge of the second shear can be sent out. Therefore, Dalian steel plant has changed it adopted Angang primary rolling method.

(2) Single shear multi slice shear

It is mainly used in blooming mill of Angang 650 (after transformation) workshop of Dalian steel plant. The right figure shows the layout of thin slab shear line after transformation in 650 workshop of Dalian steel plant.

Shearing machine

The four column shears of Angang Primary rolling mill are used in the shear. The shear is of inclined edge cutting force, its technical performance is as follows:

Shear thickness: 45mm

Shearing stroke: 190 mm

Shearing times: 18 times / min

Blade length: 1130 mm

Shear force: 15011 electricity

The elevation of the roller table the steel bed before the four column shear is 60 mm lower than that of the rear roller table of the rolling mill. The slab is pushed onto the steel bed by the slab pusher, stacked into three layers, then sent to the roller table before shearing by the chain claw. The four column shear can cut nine pieces in three layers at a time, so the production efficiency is high, one shear can meet the requirements. However, more auxiliary equipment has been added self-made operation line is suitable for medium-sized steel rolling workshops with large slab production.