CN201015775Y

CN201015775Y - Rolling apparatus for the wide steel strip in the cold rolling

Info

Publication number: CN201015775Y
Application number: CNU2007201005084U
Authority: CN
Inventors: 张焕祥; 杨海江; 薛焕亭; 伍永锐
Original assignee: JIANLONG INDUSTRIAL Co Ltd TANGSHAN CITY
Current assignee: JIANLONG INDUSTRIAL Co Ltd TANGSHAN CITY
Priority date: 2007-01-31
Filing date: 2007-01-31
Publication date: 2008-02-06
Anticipated expiration: 2017-01-31

Abstract

The utility model relates to a rolling device used in the cold rolling medium width metal strip, belonging to the technical field of rolling mill, used for solving the splicing problem of the annealing of the cold rolling medium width metal strip. The utility model comprises an uncoiler and a coiler which are arranged at the two ends, and roller mill frames which are arrayed orderly in the middle, and each frame is provided with an upper work roller and a lower work roller, an upper middle roller and a lower middle roller and an upper bearing roller and a lower bearing roller, after being improved, the upper and the lower work rollers of the end frame are rough rollers, namely, the surface of the roller body is evenly distributed with potty depressions and convex plates. The utility model is capable of making the surface of the processed metal strip be correspondingly formed with convex hulls and depressions, increasing the roughness of the whole board face, thereby reducing the direct contact areas of the metal strips, increasing the permeability of the steel coil, and reducing the part heat gain of the steel coil because of the close contact of the metal strip layers, hereby, effectively controlling the felt phenomenon. The test indicates that the annealing felt ratio of the cold rolling medium width metal strip by adopting the utility model is reduced to 2 percent from 35 percent of the prior art, having an obvious effect. The utility model has the advantages of low charge of facility modification and easy realization, having great value in generalization.

Description

The rolling device that is used for cold rolling wide strip

Technical field

The utility model relates to a kind of steel rolling equipment, especially for wide strip once-forming tandem mills in cold rolling, belongs to the steel rolling equipment technical field.

Background technology

Wide strip needs to carry out annealing in process in cold rolling after rolling process is finished, because steel strip surface is very bright and clean, contacts closely between steel band, and gas permeability is poor, is easy to occur boning between the steel band when high annealing, and has influence on product qualified rate thus.At present, most iron and steel enterprises that produce cold rolling middle broadband adopt reversible mill to carry out, in order to prevent the annealing bonding, one loose winding operation of special increase, even if but through the bonding phenomenon of still can annealing after the loose winding operation, this problem has become a key factor that influences product quality and lumber recovery in the cold rolling middle wide strip production process.In addition, for having certain production-scale cold rolling middle broadband manufacturer, increase the loose winding operation middle wide strip production process is prolonged, equipment increases, and the production cost raising is very uneconomic.

Summary of the invention

Thereby being used for overcoming the defective of prior art, the utility model provide a kind of tandem rolling unit texturing roller that last frame working roll is even small pit of surface distributed and boss effectively to control the rolling device that is used for cold rolling wide strip of steel band annealing bonding phenomenon.

The alleged problem of the utility model is realized by following technical scheme:

A kind of rolling device that is used for cold rolling wide strip comprises the frame that the uncoiler, coiling machine and the middle part that are positioned at two ends is arranged in order in the formation, each frame is provided with upper and lower working roll; Upper and lower intermediate calender rolls; Upper and lower backing roll, its special feature is: the upper and lower working roll 5,6 of described last frame 2 is the texturing roller, i.e. even small pit and the boss of distributing of body surface.

The above-mentioned rolling device that is used for cold rolling wide strip, it is 3.0 μ m that described upper and lower working roll small pit of 5,6 body surfaces and boss form surface roughness Ra, described pit and boss reticular density are 4 * 4/mm ²

The above-mentioned rolling device that is used for cold rolling wide strip, the barrel length of described upper and lower working roll 5,6 is 900 millimeters.

The utility model improves existing rolling device at wide strip high annealing adhesion problem in cold rolling, tandem rolling unit end frame working roll adopts the texturing roller of even small pit of surface distributed and boss, thereby corresponding convex closure or the depression of forming of the steel strip surface that makes processing, whole plate surface roughness increases, it is long-pending to have reduced between steel band direct contact surface thus, and the gas permeability of coil of strip increases.During steel band annealing, closely amass heat in the part of contact because of having reduced coil of strip because of interlayer, thereby effectively control the bonding phenomenon.Test shows, adopts the cold rolling middle wide strip annealing bonding rate of the utility model production to drop to 2% by 35% of prior art, and effect is remarkable, and effect is more obvious when being used for approaching material.The utility model scrap build expense is low, be easy to realize having promotional value.

Description of drawings

Fig. 1 is a schematic diagram of the present utility model;

Fig. 2 is last breast roller position view;

Fig. 3 is work roll surface pit and the boss schematic diagram that amplifies.

Number in the figure is expressed as follows: 1. coiling machine; 2. last frame; 3. top backing up roll; 4. go up intermediate calender rolls; 5. top working roll; 6. bottom working roll; 7. descend intermediate calender rolls; 8. lower support roller; 9. uncoiler; 10. steel band.

The specific embodiment

Referring to Fig. 1, Fig. 2, comprise coiling machine 1, uncoiler 9 and four frames that are arranged in order of being positioned at two ends in the formation of the present utility model, each frame is provided with upper and lower working roll 5,6, upper and lower intermediate calender rolls 4,7 and upper and lower backing roll 3,8.The upper and lower working roll 5,6 that is positioned at last frame 2 is surface treated texturing roller, and promptly body surface is provided with even small pit and boss.Referring to Fig. 3, it is 3.0 μ m that described small pit and boss form body surface roughness Ra, and pit and boss reticular density are 4 * 4/mm ²

For adapting to the needs in rolling middle broadband, the barrel length of upper and lower working roll 5,6 is 900 millimeters.

The texturing of upper working rolls and lower working rolls is handled can adopt CO ₂Laser roughening technology.Certainly, can adjust flexibly the roughness and the reticular density of working roll according to the specific (special) requirements of product.

Adopt design of the present utility model, cooperate rolling control, steel band is increased through last breast roller rear surface roughness, actual measurement roughness replication rate is 30～50%, and rolling steel strip surface roughness is 1.0 μ m～1.4 μ m.Because the convex closure and the depression of steel strip surface can reduce contacting area between steel belt layer, good permeability, local long-pending heat when effectively having reduced steel band annealing has fundamentally reduced annealing bonding phenomenon.Annealing bonding situation is to recently seeing, normal optical lining bonding rate is 35%, and the hair side material bonding rate that the working roll that adopts texturing to handle is processed is 2%, and effect is more obvious when being used for approaching material.

Claims

1. rolling device that is used for cold rolling wide strip comprises uncoiler, coiling machine and the middle part frame of discharge successively that is positioned at two ends in the formation, each frame is provided with upper and lower working roll; Upper and lower intermediate calender rolls; Upper and lower backing roll is characterized in that: the upper and lower working roll of described last frame (2) (5,6) is the texturing roller, i.e. even small pit and the boss of distributing of body surface.

2. the rolling device that is used for cold rolling wide strip according to claim 1, it is characterized in that: it is 3.0 μ m that described upper and lower working roll small pit of (5,6) body surface and boss form surface roughness Ra, and described pit and boss reticular density are 4 * 4/mm ²

3. the rolling device that is used for cold rolling wide strip according to claim 1 and 2 is characterized in that: the barrel length of described upper and lower working roll (5,6) is 900 millimeters.