KR20010074081A - Rolled coil continuous descaling pickling line - Google Patents

Abstract

PURPOSE: A pickling line for continuously removing scales in a rolled coil is provided to minimize an equipment by enabling rapid pickling through continuous spraying high-pressure pickling liquid and using a brush roll. CONSTITUTION: A strip from a pay-off reel passes a thin plate leveler(2) or a thick plate leveler(3), and is continuously pushed by a pinch roll to a solution spray(5-1) in a pickling section(5). The solution spray(5-1) injects solution for removing scale. The strip is continuously transported to a wire brush roll(5-2) for brushing the surface of the strip by a driving unit to remove scale from the surface of the strip. The brush roll(5-2) performs various brushing operations from coarse brushing to fine brushing. The strip is displaced to a neutralizing section(6), and a neutralizer is sprayed over the strip. The strip is washed in a washing section(7).

Description

Rolled coil continuous descaling pickling line

In the present invention, after the coil passes through the thin plate leveler or the thick plate leveler in the pay-off reel, the inlet pinch roll is transferred to the rust removal line and the rust removal pickling liquid is injected, and the rust removal pickling liquid is evenly sprayed on the iron plate. It is structured to promote reaction to iron plate continuously by wire brush roll in the state. By this brush action, rust removal is promoted and rust is removed by repetition of this action. And the brush roll cleans the damaged surface. In the neutralizer in the next line, the neutralizing liquid is sprayed on the same principle as the spraying of pickling liquid, and the brush roll induces the reaction under the same conditions and is washed by the washing water. After the glossiness is applied to the surface, the surface of the steel sheet is dried by a high temperature and high pressure air spray device behind it.

The dried steel sheet is oiled to make P.O steel sheet.

This design is about one-third the length of conventional equipment using rust removal spraying liquid, wire brush roll and other equipment while levellering thin plate thick plates into one line equipment. Conventionally, it has a length of 30m to 40m and a width of 3m or more and constitutes a tank of 3m or more, and passes through a conventional method into an acid tank without a mechanical auxiliary device, using only natural chemical reactions. In addition to the high pressure pickling function through the nozzle, the brush roll is mechanically removed in order to accelerate the reaction of the surface. With this invention, the pickling effect can be obtained faster than the existing pickling facilities, which can result in drastic savings in terms of location, equipment, and cost, contributing to strengthening the competitiveness, and simultaneously processing polishing and oiling operations at the same time as pickling facilities. It will form a continuous line.

The high pressure pickling liquid is sprayed on the steel strip continuously and the pickling effect can be achieved quickly by using a high speed brush roll to help the reaction of the pickling liquid, while minimizing the equipment and pickling the steel coil from the pay-off reel. Consistent line configuration to complete in tension reel by polishing, oil ring, etc.

1 is the overall device flow diagram

2 is a vertical rust removal pickling liquid injection device

3 is a brush roll

4 is a high temperature air injector

5 is a polishing roll form

6 degree automatic oiling device

Explanation of symbols on important parts of drawing

(1) pay-off reel

(2) lamination leveller

(3) Thick plate leveller

(4) pinch roll

(5) Pickling part

(5-1) Pickling liquid injection device

(5-2) wire brush roll (# 1 wire brush roll, # 2 wire brush roll, etc.)

(6) China part

(6-1) Neutral liquid injection device

(6-2) nylon brush roll, (# 1 nylon brush roll, # 2 nylon brush roll, etc.)

(7) washing devices

(7-1) Washing liquid spraying device

(7-2) nylon brush roll, (# 1 nylon brush roll, # 2 nylon brush roll, etc.)

(8) automatic polishing equipment

(8-1) Polishing roll

(9) drying apparatus

(9-1) High temperature high pressure air injector (# 1 high temperature high pressure air injector,

# 2 high temperature high pressure air injector)

(10) Automatic oiling device (10-1) oiling roll

(10-2) oiling feeder

(11) Exit pinch roll

(12) tension reel

A description with reference to the drawings illustrated below. 1 is a flow diagram of the overall device according to the present invention and after the strip from the pay off reel passes through the thin plate leveller (2) or thick plate leveller (3) in the pickling portion (5) by the Pinch roll (5-1) It keeps pushing the aqueous spray device (5-1) and sprays the rust removal liquid from the aqueous spray device, and the strip and sheet plate are continuously transferred to the (5-2) wire brush roll where (5-2) brush The roll removes rust by brushing the surface of the plate by the drive. This brush roll (5-2) is the roughest brush first, gradually reducing roughness and finishing the wire brushing at the last brush roll. And the strip continues to move forward to the neutralized portion (6), where the neutralized liquid is sprayed on the strip and then moved to the washing portion (7) the washing liquid continuously spray cleaning the neutralized liquid.

In this process, (6) (7) serves to smooth the surface damaged by the wire brush roll during transfer to the nylon brush roll, and then transfers it back to the air spray device (9) This removes the aqueous solution remaining on the strip and transfers it to the pinch roll at the surface treatment outlet. The wire brush roll (5-2) is covered with a cover to prevent the liquid from scattering to the surface treatment outlet, and the aqueous solution passing through the iron plate is collected in the tank # 1, passes through the filter by the pipe, and moves to the tank # 2. do. . In tank # 2, it is recycled with (5) injection device. The rust removal work is completed by the above process, and the surface gloss work is continuously progressed by the polishing roll. After that, the P.O iron plate is (10) continuous automatic oiling work on the strip and coiled at the tension reel.

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Claims (1)

In the flow diagram of Figure 1 as a device for surface treatment of the steel coil coil pickling, neutralization, washing by a high-speed spraying device and a brush roll followed by a series of line configuration to complete the polishing work, oiling work, continuous pickling, Polishing and oiling devices