Multi-wire slitting and rolling controlled cooling device for bar

Abstract

The invention relates to a multi-wire slitting and rolling controlled cooling device for a bar . The multi-wire slitting and rolling controlled cooling device for the bar comprises a plurality of single-wire cooling devices which are arranged in parallel; the multiple single-wire cooling devices are arranged on a same fixed water beam; the accuracy of alignment of a running middle line of the baris remarkably improved; the steel stacking risk of the bar is reduced; each single-wire cooling device comprises a transition guide groove, a cooling structure and a collection guide groove which aresequentially arranged in the production direction of the bar; cooling structures comprise water cooling units, and water counterattacking units and empty passing units. According to the structure arrangement of the water cooling units and the empty passing units, the quick positioning installation of cooling nozzles and empty passing pipes can be realized, first assembling seats of the cooling nozzles and second assembling seats of the empty passing pipes are arranged to be of the same structure, the different distribution of the cooling nozzles and the empty passing pipes on the fixed water beam can be realized by adopting the same installation mode, and accordingly, the production process and the production error can be quickly adjusted, such as from continuous cooling to intermittent cooling process and temperature difference between wires.

Description

Technical field [0001] The invention relates to the field of bar material production, in particular to a bar material multi-line slitting rolling control cooling device. Background technique [0002] In the production of bar multi-line slitting and rolling, a control cooling device is required. The control cooling device is generally set between the K1 finishing mill and the flying shear, which is mainly composed of transition guide grooves and penetrating channels arranged in sequence along the bar production direction. It is composed of water cooling device and collection guide groove. In actual production, the bars rolled by the K1 finishing mill transition from the transition channel to the water cooling device for cooling through water, and after cooling, the bars are gathered through the collection channel to the flying shear operation. [0003] Among them, the existing water-through cooling device is equipped with two replaceable water-through cooling devices for different ...

AI Technical Summary

Problems solved by technology

Although the above-mentioned water-through cooling device can achieve a cooling effect, it has the following defects: First, the structure of two moving trolleys is used, which makes the front and rear alignment of the water-through cooling device poor, which may easily cause steel stacking accidents and affect the steel rolling production process; and the circular The pipe clamp is easy to loosen after frequent movement, and the water pipe under the high-pressure water supply is easy to shift, which affects the neutrality and increases the risk of stacking steel

Second, the cooling effect of the existing water-through cooling device is poor. During multi-line cooling, for the convenience of cooling, the cooling water of the multi-line bar is controlled by a unified switch, so that each line is supplied with water synchronously. However, in actual cooling, due to the rolling process Different, for example, there is an error of about 5-6 degrees Celsius in the rolled center line bar and side line bar. At the beginning of rolling, the error of manual neutral installation may cause a temperature difference of 15-20 degrees Celsius between the lines, which will cause Causes defects such as inconsistent quality of produced bars and high scrap rate

Third, when the existing water-cooling device cools the bar, the water is seriously carried along with the bar running, resulting in uneven cooling of the bar surface and wavy bending, which not only seriously affects the quality of the finished product, but also easily causes steel stacking accidents

Fourth, the cooling effect is relatively simple, which cannot meet the process requirements of segmental cooling according to different lengths

[0004] Among them, the existing transition guide groove adopts a fixed base structure, but the centering accuracy is poor due to the back and forth movement of the water tank, which is a long-term steel pile accident point

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