CN105499309A

CN105499309A - Method for preventing aluminum coils with large coil diameters from misaligning in high-speed rolling process

Info

Publication number: CN105499309A
Application number: CN201511014407.0A
Authority: CN
Inventors: 王锐; 何峰; 龚平; 厉西咏
Original assignee: CHINALCO-SWA COLD ROLLING Co Ltd
Current assignee: CHINALCO-SWA COLD ROLLING Co Ltd
Priority date: 2015-12-31
Filing date: 2015-12-31
Publication date: 2016-04-20

Abstract

The invention discloses a method for preventing aluminum coils with large coil diameters from misaligning in a high-speed rolling process. The method comprises the following steps of uniformly spraying rolling oil to the surface of a strip at the coiling side, forming an oil film, and then coiling. The method has the advantages that by spraying the rolling oil to the surface of the strip at the coiling side, forming the oil film, and then coiling, the air between layers can be exhausted out by the oil film; because of the existence of the oil film, the surface adhesive force is enhanced, the adjacent upper and lower layers of strips are adhered together, the easiness in transverse staggering is avoided, the misalignment defect is avoided, the rolling oil only needs to be cleaned in a subsequent drawing and straightening process, and the influence on the quality of a product is avoided; according to the method for preventing the aluminum coils with large coil diameters from misaligning in the high-speed rolling process, the adjusting of parameters, such as rolling speed, rolling tension and roll roughness, and the like is not needed, the rolling of a press roll is not needed, the additional influence caused by the change of original equipment parameters and the use of equipment is prevented, and the possible quality defect is avoided.

Description

Prevent large winding diameter aluminium from twisting in the method producing staggered floor in high-speed rolling process

Technical field

The invention belongs to aluminum processing technology field, be specifically related to a kind of large winding diameter aluminium that prevents and twist in the method producing staggered floor in high-speed rolling process.

Background technology

Along with aluminium processing market dog-eat-dog year by year, the cost consciousness of Ge Lv processing enterprise strengthens gradually.The coiled material of tradition coil diameter (being less than 2000mm) less than normal is because yield rate is low, the low inferior reason of production efficiency reduces gradually, and coiled material tends to roll up production greatly gradually.But because coil diameter is excessive, milling train is in the operation of rolling, along with window of web velocities and coil diameter increase gradually, the key groove α (see figure 1) of band and coiled material external diameter reduces gradually, band normal pressure is between layers caused to reduce, normal pressure reduction can cause air between layers not get rid of, and will cause the generation of staggered floor defect in band winding process.

The method of solution staggered floor conventional at present has 5 kinds:

1, by increasing the angle at α angle and the normal pressure that increases between layers, the air between layer by layer being discharged as far as possible and reaching the object eliminating staggered floor; But because of rolling mill design reason, rolling line during operation, template roller, spool positions are all fixing, have not reached the object increasing α angle by change;

2, reduce mill speed, when speed reduces, staggered floor defect can arrange because of machine, the vibration of coiled material, spool etc. reduces and eliminate staggered floor defect; But, although reducing mill speed can reach by reducing the vibration of coiled material, spool etc. the object eliminating staggered floor defect, reducing mill speed and can have a strong impact on production efficiency, when namely current production efficiency be benefit, also inadvisable;

3, drop into and batch pressure roller batching side, increase normal pressure between layers, reduce staggered floor defect; Although drop into and batch pressure roller and can reach the object reducing staggered floor defect by increasing normal pressure between layers batching side, but because some kind Surface Quality requires higher, as PS plate, need the roller system as far as possible reducing contact in process of production, and require higher because batching pressure roller effects on surface cleannes, slightly do not note, then can be pressed into a large amount of aluminium ash at coiled material surface, have a strong impact on product quality, neither the best way at present;

4, increasing coiling tension, reaching by increasing coiling tension and the normal pressure that increases between layers the object reducing staggered floor defect; The object reducing staggered floor defect is reached by increasing coiling tension and the normal pressure that increases between layers, if but coiling tension is excessive, product can be made to produce and to batch sticky wound, not mate with straightening tension force, the situations such as online plate shape distortion, tension force can only adjust within the specific limits, does not allow excessive and affects product quality;

5, increasing gloss level of roll, the frictional force increased between layers by increasing gloss level of roll, reaching the object reducing staggered floor; Increasing gloss level of roll, the frictional force increased between layers by increasing gloss level of roll, reach the object reducing staggered floor, but current each kind having roughness all to have requirement to strip surface, inapplicable the method.

Summary of the invention

In view of this, the object of the present invention is to provide a kind of large winding diameter aluminium that prevents to twist in the method producing staggered floor in high-speed rolling process, under the condition not changing Rolling Production parameter, effectively can not only prevent staggered floor, and can not product quality be affected.

For achieving the above object, the invention provides following technical scheme:

Prevent large winding diameter aluminium from twisting in the method producing staggered floor in high-speed rolling process, even application ROLLING OIL in the strip surface of batching side is also batched after forming oil film again.

Further, atomizing nozzle is set batching above side plate forming roll, and atomizer is set on atomizing nozzle evenly sprays ROLLING OIL to strip surface.

Beneficial effect of the present invention is:

The large winding diameter aluminium that prevents of the present invention twists in the method producing staggered floor in high-speed rolling process, by batching again after forming oil film in aluminum strip surface spraying ROLLING OIL, air between layers can be discharged by oil film, and because of the existence of oil film, superficial attractive forces strengthens, and adjacent two webs up and down " is glued " together, not easily produce the horizontal changing of the relative positions, thus reach the object stopping staggered floor defect, only in follow-up straightening operation, ROLLING OIL need be cleaned, the quality of product can not be affected; Therefore, the method that the present invention prevents large winding diameter aluminium from twisting in and produces staggered floor in high-speed rolling process does not need the parameters such as adjustment mill speed, coiling tension, gloss level of roll, input is not needed to batch pressure roller yet, prevent the added influence brought because of the use of changing existing equipment parameter and equipment, evade the mass defect that may produce.

Accompanying drawing explanation

In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:

Fig. 1 is that existing large winding diameter aluminium twists in and batches side structure schematic diagram in high-speed rolling process;

Fig. 2 batches side structure schematic diagram after setting up atomizing nozzle.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the invention will be further described, can better understand the present invention and can be implemented, but illustrated embodiment is not as a limitation of the invention to make those skilled in the art.

As shown in Figure 2, side structure schematic diagram is batched for setting up after atomizing nozzle.The present embodiment prevents large winding diameter aluminium from twisting in the method producing staggered floor in high-speed rolling process, and even application ROLLING OIL in the strip surface of batching side is also batched after forming oil film again.

Further, the present embodiment arranges atomizing nozzle 2 batching above side plate forming roll 1, and on atomizing nozzle 2, arranges atomizer evenly spray ROLLING OIL to strip surface, can meet the requirement of ROLLING OIL even application.

The large winding diameter aluminium that prevents of the present embodiment twists in the method producing staggered floor in high-speed rolling process, by batching again after forming oil film in aluminum strip surface spraying ROLLING OIL, air between layers can be discharged by oil film, and because of the existence of oil film, superficial attractive forces strengthens, and adjacent two webs up and down " is glued " together, not easily produce the horizontal changing of the relative positions, thus reach the object stopping staggered floor defect, only in follow-up straightening operation, ROLLING OIL need be cleaned, the quality of product can not be affected; Therefore, the method that the present embodiment prevents large winding diameter aluminium from twisting in and produces staggered floor in high-speed rolling process does not need the parameters such as adjustment mill speed, coiling tension, gloss level of roll, input is not needed to batch pressure roller yet, prevent the added influence brought because of the use of changing existing equipment parameter and equipment, evade the mass defect that may produce.

The above embodiment is only that protection scope of the present invention is not limited thereto in order to absolutely prove the preferred embodiment that the present invention lifts.The equivalent alternative or conversion that those skilled in the art do on basis of the present invention, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.

Claims

1. prevent large winding diameter aluminium from twisting in the method producing staggered floor in high-speed rolling process, it is characterized in that: even application ROLLING OIL in the strip surface of batching side is also batched after forming oil film again.

2. the large winding diameter aluminium that prevents according to claim 1 twists in the method producing staggered floor in high-speed rolling process, it is characterized in that: atomizing nozzle is set batching above side plate forming roll, and atomizer is set on atomizing nozzle evenly sprays ROLLING OIL to strip surface.