Ultrathin uncoated tinplate base high elongation percentage wet leveling technological equipment and method

A technology of process equipment and elongation rate, used in metal processing equipment, workpiece lubrication devices, workpiece cleaning devices, etc., can solve the problems of high production dust, environmental pollution, low elongation rate of steel plates, etc. The effect of surface and product comprehensive quality

Pending Publication Date: 2017-11-03
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of low elongation, low hardness, many surface defects, and environmental pollution caused by production dust in the existing ultra-thin tinplate raw plate production process.

Method used

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  • Ultrathin uncoated tinplate base high elongation percentage wet leveling technological equipment and method

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Effect test

Embodiment 1

[0036] In order to overcome the problems of low elongation, low hardness, many surface defects, and environmental pollution caused by production dust in the existing ultra-thin tinplate raw plate production process, such as figure 1 As shown, this embodiment provides a wet leveling process equipment for ultra-thin tin-plated raw plate with large elongation, including uncoiler 1, entrance tension roller 2, No.1 rolling mill 3, No.2 rolling mill 4, and exit tension roll arranged in sequence. Roller 5 and coiler 6, the No. 1 rolling mill 3 is equipped with a leveling liquid system 7 at the entrance end, which is characterized in that: the leveling liquid system 7 uses an emulsion with a concentration of 0.5% to 1.5% as the leveling liquid, No. The exit ends of 1 rolling mill 3 and No. 2 rolling mill 4 are respectively provided with anti-splash devices 9 installed on the stands.

[0037] The working process of ultra-thin tin-plated raw plate large elongation wet leveling process e...

Embodiment 2

[0043]On the basis of Example 1, such as figure 1 As shown, the two anti-splash devices 9 are located on the sides of the work rolls on No.1 rolling mill 3 and No.2 rolling mill 4. The anti-splash devices 9 are welded by two steel plates, one of which is set horizontally, and the other The steel plates are arranged obliquely, and the angle between the two steel plates forms an obtuse angle with the opening facing upwards and is fixedly installed on the frame.

[0044] The anti-splash device 9 is installed on the upper side of the strip steel at the exit of No. 1 rolling mill 3 and No. 2 rolling mill 4. It is used to prevent the leveling liquid splashed by the rolling roll from falling on the steel plate. The area from the centerline of the upper work roll to the centerline of the lower work roll at the exit of No.1 rolling mill 3 and No.2 rolling mill 4 is shown.

Embodiment 3

[0046] On the basis of Example 1, the ultra-thin tinplate raw plate large elongation wet leveling process equipment also includes an lye washing device 8, the lye washing device 8 includes an lye tank, a centrifugal pump and a heat conduction oil heater, and the heat conduction oil heater The circulation pipeline is connected with the lye tank, the lye tank is connected with the centrifugal pump, and the centrifugal pump is connected with the spray beam, and the spray nozzle on the spray beam is directly facing the upper and lower surfaces of the steel strip at the exit end of No.1 rolling mill 3.

[0047] The lye washing device 8 is used to clean the residual emulsion on the surface of the flat rolled steel strip, and is mainly composed of an lye tank, a centrifugal pump and a heat transfer oil heater. The lye washing device 8 is installed on the outside of the No. 1 rolling mill 3 outlet facing the upper and lower back-up rolls, and is used for real-time washing of the residu...

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Abstract

The invention provides ultrathin uncoated tinplate base high elongation percentage wet leveling technological equipment and a method. By arranging a leveling liquid system taking a low-concentration emulsion as a medium in a two-stand leveling unit, the wet leveling elongation percentage of strip steel is raised substantially; by reasonably arranging a splashing prevention device, the splashing of leveling liquid is effectively prevented; equipped with an alkali liquor washing system and a strip steel cleaning system, the surface of the strip steel is subjected to alkali liquor washing and soft water cleaning, so that the leveling liquid remained on the surface of the strip steel is cleaned, and spots of the leveling liquid are effectively controlled; by adopting a curtain wall air knife type air knife blowing system, high-output and low-noise efficient blowing is realized; and equipped with a hot air drying system, surface cleanness and dryness of the strip steel are guaranteed. By adopting the leveling liquid system taking the low-concentration emulsion with the concentration being 0.5-1.5% as the medium, the elongation percentage and the antirust capability of the strip steel are raised and improved significantly, steel plate deformation is improved substantially and the elongation percentage can reach 5-10%, the high elongation percentage wet leveling can repair and cover a part of surface defects, and thus the plate surface quality and the product overall quality are improved.

Description

technical field [0001] The invention belongs to the technical fields of metallurgical machinery, automation and rolling, and in particular relates to a large elongation wet leveling process equipment and method for an ultra-thin tin-plated raw plate. Background technique [0002] Single (double) rack leveling units generally have two functions of dry leveling and wet leveling: the so-called dry leveling means that no leveling agent is used when the strip passes through the leveling machine, and the dry leveling mode is adopted. Cleaning, iron powder or other impurities (such as dust) on the surface of the strip are easy to adhere to the roll to produce smooth roll marks or surface defects of color difference, resulting in a decline in the surface quality of the strip. Once the above quality problems occur, the leveling machine must be replaced The working rolls or backup rolls, especially the replacement of the working rolls, in this way, the service life of the working roll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/22B21B45/02
CPCB21B1/22B21B45/0251B21B45/0272B21B45/0287B21B2001/228
Inventor 计江赵团民刘云飞徐利璞尤磊
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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