JPH07290133A - Equipment for refining rolling stock - Google Patents

Abstract

PURPOSE:To enable stable supply of rolling stocks with satisfactory quality by providing plural deflector rolls that are replaceable into a transporting pass line in accordance with the surface condition of a rolling stock. CONSTITUTION:The equipment is so constructed that an oil coater 2, at least a set of pinch rolls, shear S and deflector roll 5 are successively arranged towards a reel 6 for coiling a rolled stock 1. Since the outer diameter of a coil changes every minute during the coiling of a rolled stock, the deflector roll 5 is arranged before the take-up reel in order to constantly stabilize the level of a transporting pass line. After the rolled stock 1 is cut off by the shear S, the rolling stock is not present between the shear and the take-up reel, consequently facilitating the exchange of the deflector roll 5. In the case where sticking of a coating oil is to be desirously avoided, the replacement of the deflector roll 5 has only to be performed, which not only dispenses with addition of extra processes but eliminates lowering of quality and also improves productivity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to equipment for adjusting rolled material such as cold-rolled sheet or hot-rolled sheet. It aims to improve production efficiency.

[0002]

2. Description of the Related Art In recent years, there has been a tendency to connect different processes to make them continuous for the purpose of reducing the manufacturing cost of cold-rolled steel sheets and shortening the lead time.

Based on such a concept, a process line in which a temper rolling equipment and a conditioning equipment are connected, or a process in which a continuous annealing furnace and various surface treatment equipment are further connected to the upper process of the temper rolling equipment The line is known, and many lines are already in operation in Japan.

[0004] Here, for example, as a process line configuration in which the temper rolling equipment and the conditioning equipment are connected, a rolling mill (skin pass mill) for temper rolling, an oil coating device for applying rust preventive oil, and a take-up reel There is a method in which the above-mentioned objects are arranged one after another, which makes it possible to process what was conventionally processed through at least two lines in a single line, and it is possible to achieve the above-mentioned object advantageously.

By the way, the above-mentioned process line (temper rolling equipment + refining equipment) has the following problems.

That is, when the work rolls are regularly recombined during the operation, or when the work rolls are damaged and the rolls need to be reconfigured suddenly, the skin pass mill is opened (temper rolling is performed). Then, the rolled material (a material not subjected to temper rolling is abbreviated as “North Kinpas material” hereinafter) is passed as it is to enter the winding step. The problem here is that the oil when applied to the previously processed rolled material adheres to several threading rolls installed between the oil coating device and the take-up reel, and this oil,
It is to adhere even to North Kinpasu material that does not require the application of rust preventive oil. (A similar problem occurs when oil-free products and oil-coated products are produced separately on the same line.) When this North Kinpas material is temper-rolled again, rust preventive oil is applied to the surface of the plate material. Since the surface condition of the adhered sheet is significantly different from that of an ordinary plate, there is a disadvantage that the elongation rate is different and stains are likely to adhere to the surface, which causes a deterioration in quality. This tendency was particularly remarkable in the dry skin pass material.

In order to prevent such deterioration in quality, a method generally used in the past has been adopted in which electrolytic corrosion is performed in another line to remove rust-preventing oil prior to temper rolling. However, this method significantly hindered productivity.

[0008] As another method for preventing quality deterioration, there is an attempt to omit the electrolytic cleaning line by performing sufficient care for the rolls arranged after the oiling device. The addition of was extremely disadvantageous for improving the operating efficiency of the continuous line and thus the productivity.

Furthermore, as a technique for avoiding adhesion of rust preventive oil, a method disclosed in Japanese Patent Laid-Open No. 5-269525, in which a steel plate is cut by a cutting shear and then the steel plate is pressed against an Euler roll by a pinch roll. It has been known. According to this method, since the plate is immediately wound up after the oiling without interposing a threading roll, it is possible to completely prevent the rust preventive oil from adhering to the surface of the steel plate only by stopping the oiling device. it can.

However, in the case of this method, considering the installation of the exhaust equipment for preventing the spray of mist generated from the oil coating device from scattering to other equipment, the oil coating device itself must be large. However, it was very difficult in terms of equipment to make such an oiling device follow the transfer path line that changes depending on the coil outer diameter that changes from moment to moment.

[0011]

SUMMARY OF THE INVENTION An object of the present invention is to propose a refining equipment which can advantageously solve the above problems in a process line having an oiling device. Another object of the present invention is to propose a refining facility that can be operated without causing quality deterioration or productivity deterioration when processing rolled materials having different surface conditions.

[0012]

SUMMARY OF THE INVENTION The present invention is a conditioning equipment in which an oiling device, at least one set of pinch rolls, shears, and deflector rolls are sequentially arranged toward a reel for winding rolled material. In addition, the above-mentioned facility is a facility for adjusting rolled material, characterized in that it has a plurality of deflector rolls that can be switched to a conveyor line according to the surface condition of the rolled material. And this refinement equipment can be connected to the downstream of a temper rolling line, a continuous annealing-tempering rolling line, etc., as well as a hot rolling-pickling line, an electric tin plating line, an electric zinc plating line, a melting It can be connected to various lines such as a galvanizing line.

[0013]

The points on the equipment arrangement in the present invention can be summarized as follows.

No deflector roll is arranged between the oiling device and the shear. One or more sets of pinch rolls should be placed between the oiling device and the shear. The minimum required number of deflector rolls are arranged between the shear and the take-up reel, and this roll shall consist of multiple rolls, each of which has a structure that can be appropriately replaced with a rolled material transport path line as required. That

These will be described below. When the line is in the operating state, it is difficult to replace the deflector roll in that state because there is always rolled material between the oiling device and the shear.Therefore, the deflector roll may not be placed between them. It is essential.

Since the outer diameter of the coil changes from moment to moment during winding of the rolled material, a deflector roll is arranged in front of the winding reel in order to keep the level of the conveying path line constant. Is useful. Since the rolled material does not exist between the shear and the take-up reel after the rolled material is cut by the shear, the deflector rolls can be easily replaced.

As described above, in the present invention, a plurality of deflector rolls are arranged immediately before the take-up reel so that the deflector rolls can be replaced with the conveying path line according to the surface condition of the rolled material. In the case where it is desired to avoid the adherence, it is only necessary to replace the rolls, it is not necessary to add an extra step, and it is possible to avoid the deterioration of the quality and significantly improve the production efficiency. Further, according to the present invention, when the type of rust preventive oil applied to the front coil and the next coil is different, and it is desired to avoid mixing the rust preventive oils with each other (for example, when mixed, the degreasing property and the subsequent chemical conversion processability can be improved. The adverse effect) similarly exerts the effect of reducing the quality and improving the production efficiency.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a structure of equipment according to the present invention. In the figure, 1 is a rolled material, 2 is an oil coating device for applying rust preventive oil or the like to the surface of the rolled material 1, and 3 is a pinch roll. While the rolled material after being cut by the shear S is supported by the pinch rolls 3 and is fed forward, there is a concern that rust-preventing oil may be attached to the untreated rolled material 1 in the upstream process. In such a case, the roll can be released quickly.

Further, 4 is an apron, 5 is a deflector roll having one end connected to the hydraulic cylinder 5a and having a link 5c swingable about a pivot 5b. The deflector roll 5 is composed of a plurality of ( In this example, the number is two), and the transfer path line can be alternately switched by the operation of the hydraulic cylinder 5a. Further, 6 is a take-up reel shown as an example of a carousel type, and a plurality of take-up reels 6 may be provided. In this case, one set of deflector rolls 5 is arranged on each reel. To do so.

The deflector roll 5 is replaced after the coil is divided. That is, the replacement may be performed in the procedure as shown in FIG.

Steel plates corresponding to can materials T4 to T5CA are treated by using the equipment of the present invention as shown in FIG. 1 and by using conventional equipment as shown in FIG. In each of the above cases, the occurrence rate of defective products was examined when the North Kinpas material generated in the process was subjected to another temper rolling (dry skin pass, elongation rate 1.5%) in another line. Here, in using the equipment of the present invention, the material subjected to the temper rolling / oiling and the material not subjected to the temper rolling / oiling are processed by selectively using deflector rolls, and the conventional equipment is used. , Treated with the same deflector roll as is. In each of these cases, the amount of oil applied was 100 mg / m ² .

The results are shown in FIG. As is clear from FIG. 4, 25% of defective products (dirt, poor elongation) were generated by using the conventional equipment, but it was confirmed that the number of defective products was extremely reduced by using the equipment according to the present invention. .
As described above, the reason why the defective product is drastically reduced by applying the equipment according to the present invention as compared with the case of the conventional equipment is that the rust preventive oil applied to the temper rolled steel sheet is This is because it did not adhere to the North Kinpus material.

In the example of the invention shown in FIG. 1 above, the case where the number of deflector rolls is two is shown, but the number may be three or more. Further, if a mechanism for cleaning the deflector rolls is provided so that the rolls can be cleaned while the rolls are on standby, the deflector rolls can be applied to three or more kinds of uses (surface condition), and the application range is further expanded. . Further, although FIG. 1 shows an example in which the transport path line of the rolled material is horizontal, the transport path line does not necessarily have to be horizontal, and may be vertical. A configuration in which a shear or the like is arranged may be used.
However, since the deflector roll cannot be arranged between the oil coating device and the shear, a combination in which the oil coating device is arranged on the vertical conveying path line and the shear is arranged on the horizontal conveying path line subsequent thereto is impossible.

FIG. 5 shows an example in which the refining equipment according to the present invention is arranged downstream of the continuous annealing-temper rolling line. In addition to the above, the refining equipment according to the present invention is a hot rolling-pickling-tempering rolling-refining line for producing hot-rolled steel sheets, which has recently been used as an alternative to cold-rolled steel sheets, or molten zinc. In a plating-temper rolling-refining line or the like, it can be appropriately arranged and used as a refining equipment accompanied by an oil coating device. Furthermore, the present invention can be applied not only to oil application but also to the case where a liquid is applied to a steel plate such as chromate treatment.

[0026]

According to the present invention, by simply replacing the deflector rolls arranged on the entrance side of the take-up reel, it is possible to respond to the surface condition of the rolled material, and to stabilize the rolled material of good quality. Not only can it be supplied, but it is extremely useful for improving production efficiency. Further, according to the present invention, a mechanism for cleaning the deflector rolls is provided, and by cleaning the rolls while they are on standby, the deflector rolls can be applied to three or more kinds of uses, and the application range is extremely wide.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a refining facility according to the present invention.

FIG. 2 is a diagram showing how to replace a deflector roll.

FIG. 3 is a diagram showing a configuration of conventional equipment.

FIG. 4 is a diagram showing a comparison of product defect occurrence rates.

FIG. 5 is a diagram showing a process line in which a continuous annealing furnace, temper rolling equipment, and conditioning equipment are connected.

[Explanation of symbols]

 1 rolled material 2 oil coating device 3 pinch roll 4 apron 5 deflector roll 6 reel S shear

Claims (2)

[Claims] 1. A refining facility in which an oiling device, at least one set of pinch rolls, shears, and deflector rolls are sequentially arranged toward a reel for winding rolled material. Having a plurality of deflector rolls that can be switched to the transport path line according to the surface condition of the rolled material,
This is a facility for adjusting rolled material. 2. The method according to claim 1, which is connected to a temper rolling equipment.
Equipment described in.