CN200967066Y

CN200967066Y - Temper mill and hot rolling strip steel acid-free device for derusting using the same

Info

Publication number: CN200967066Y
Application number: CN 200620157358
Authority: CN
Inventors: 张凤泉; 黄璞
Original assignee: Wuhan Iron and Steel Group Corp
Current assignee: Wuhan Iron and Steel Group Corp
Priority date: 2006-11-15
Filing date: 2006-11-15
Publication date: 2007-10-31
Anticipated expiration: 2016-11-15

Abstract

A leveling machine and a hot rolling strip steel anacidity deruster using the leveling machine are provided, which relates to a leveling machine and an anacidity deruster. Aiming at the defect that the existing leveling can not effectively remove the iron scale attached and the bad cleaning and brushing effect of the anacidity deruster, the utility model provides a leveling, which comprises a roller wiper (15) contacted with a lower leveling roller (13) and a leveling press roller (14) with the end. The roller wiper (15) can clean the iron scale attached by the roller after rotating for one circle, thus reducing the cleaning difficulty at the rear period and improving the working efficiency; meanwhile, the utility model also provides an anacidity deruster, which comprises an emulsion supply equipment (1), a leveling (2), a high pressure water spray equipment (3), a metal brush (4), a clean drying plant (5) and a coil coiling (6), thus can largely prolong the service life of the metal brush and improve the cleaning effect; therefore, the utility model is beneficial for promotion and application.

Description

A kind of planisher and use the hot-strip anacidity derusting device of this planisher

Technical field

The utility model relates to the planisher that uses in a kind of hot-strip rust cleaning process, and a kind of anacidity derusting device.

Background technology

In order to guarantee the surface quality of cold-strip steel, cold rolling preceding must the removing to the iron scale on hot-strip supplied materials surface.At present, the main method of hot-rolled sheet strip steel scale on surface is removed by iron and steel enterprise and steel processing enterprise, is to adopt sulfuric acid or hydrochloric acid to carry out pickling, by acid solution iron scale is dissolved, to reach the purpose of rust cleaning.The bending pickling again of peeling off is generally adopted in the rust cleaning of ordinary steel, and used medium is sulfuric acid or hydrochloric acid; Stainless rust cleaning generally adopts hydrofluoric acid to add the method for nitric acid dissolve scale on surface; The method of pickling is more then mainly adopted behind the surface sand-blasting in the rust cleaning of silicon steel.Someone test with the steel sand that suspends spray strip steel surface or in neutral solution the method for electrolysis eliminate rust, but these two kinds of methods are still under test.

Analysis-by-synthesis, more than these several rust cleaning technology all exist some problems, the shortcoming of conventional pickling technology maximum is exactly that acid solution causes environmental pollution easily, the recycling operation of pickle is numerous and diverse, and acid cleaning process long flow path, floor space are big; Adopt the steel sand that suspends to spray strip steel surface, make the slab belt surface pit occur easily, and the rust cleaning rate is lower, strip steel surface quality is descended; Adopt the method for neutral solution electrolysis, also relate to problems such as the pollution of electrolyte and recycling, and present derusting device also all is an acid dip pickle, method for the anacidity rust cleaning, existing apparatus can't use, people are at the device and method of attempting to seek a kind of anacidity rust cleaning, to solve the negative effect that pickling brings at present.

Chinese patent ZL02137851.7 discloses the processing method and the isolated plant thereof on a kind of hot-strip surface, be used to remove the hot-strip scale on surface, its key step comprises that band steel loose rind part (makes the flexural deformation of band steel by depress roller and carrying roller, the physical arrangement of destruction iron scale), belt steel flating partly, upward lower plane wire brush dish iron scale is cleaned part (water quench when cleaning with water), tension strain part with water, before entering cold-rolling mill again, the belt steel surface iron scale is removed.The existing operation of pickling is numerous and diverse though this patent has solved, floor space big, the drawback of contaminated environment, but the problem of its existence is in actual applications, the band steel enters the belt steel flating part after loose decorticator destroys the physical arrangement of iron scale, the iron scale of peeling off can be glued on the transfer roller of planisher in the continuous rotary course of planisher, like this when transfer roller continues thereafter belt steel flating just with it on the iron scale of adhesive tape press to the belt steel surface of back once more, thereby rust cleaning causes obstacle to belt steel surface; In addition, this patent promptly utilizes the wire brush dish to clean with water after to belt steel flating, because belt steel surface is stained with the iron scale that is broken in a large number and separates when cleaning with water, therefore quality is cleaned in influence with water easily, and a large amount of iron scales can cause the reduction in service life of wire brush dish, does not utilize actual use.

The utility model content

Have the drawback that can not effectively remove iron scale attached thereto at existing planisher, the utility model provides a kind of planisher, and it can solve iron scale effectively and be attached to problem on the planisher roll.

Clean problem of poor quality, that the life-span is low with water at present anacidity derusting device existence, the utility model provides a kind of anacidity derusting device, and it can significantly improve the life-span and the washing effect of iron brush.

The concrete scheme of dealing with problems is as follows:

A kind of planisher mainly comprises frame 12, smooth lower roll 13, smooth depress roller 14, is fixed with roll on the described frame 12 and wipes examination device 15, and the termination of described roll wiper 15 contacts with smooth lower roll 13, smooth depress roller 14.Roll wiper 15 can be removed whenever the rotate a circle iron scale of institute's adhesive tape of roll, has reduced the removing difficulty in later stage, has improved operating efficiency.

Preferably, roll wiper 15 is wire brushes, and wire brush can be removed the iron scale that roller surface adheres to preferably.

Preferably, roll wiper 15 is hairbrush, the advantage that hairbrush has is cheap, do not damage the roll body.

A kind of hot-strip anacidity derusting device that uses aforementioned planisher, this device comprises from front to back successively with the lower part: emulsion supply equipment 1, planisher 2, the equipment 3 that sprays water with high pressure, iron brush 4, cleaning, drying equipment 5 and coiling machine 6, described each several part all connects by band steel 7, and the band steel can be realized removing to its scale on surface by the said equipment successively.

Especially, when needs eliminate rust continuously, then this anacidity derusting device also comprises uncoiler 8, pinch roll 9, bonding machine 10 and the kink 11 that is arranged on emulsion supply equipment 1 the place ahead, and described each several part all connects by band steel 7, can guarantee the operating continuity that eliminates rust like this.

Scheme described in the utility model can produce following effect:

1. derusting device described in the utility model can be realized the rust cleaning to straight carbon steel, stainless steel and silicon steel, applied range.

2. adopt derusting device described in the utility model can realize the anacidity rust cleaning, saved the extremely strong acid solution of corrosivity, eliminated the corrosion of acid solution simultaneously, greatly reduce production cost equipment.

3. owing to adopt the anacidity rust cleaning, the based on very high purity of iron oxide in the iron rust is different from pickling rear oxidation iron and has changed into molysite, has improved the price and the utilization rate of iron oxide.

4. owing to be anacidity rust cleaning, saved the acid solution stocking system, acid solution is followed ball system, acid solution recovery system, acid solution regenerative system and acid mist and reclaimed exhaust system etc., can save great amount of investment, has improved environmental pollution.

National common cold rolled sheet output about 2,580 ten thousand tons (containing the postorder clad plate) in 2005, ton steel acid consumption 3-5kg, year consumes ten thousand tons of the about 7.5-13 of hydrochloric acid, and one ton of hydrochloric acid then adopts device described in the utility model can save ten thousand yuan of acid expense 4300-7000 every year by 560 yuan.

Along with environmental protection and the formation social with association, country uses and controls more and more stricter acid, therefore anacidity derusting device described in the utility model is steel industry and steel processing industry, a small investment is provided, has consumed low, as not have filth greening production technology, and market prospects are wide.

5. anacidity derusting device described in the utility model adopts the emulsion supply equipment to spray emulsion to belt steel surface simultaneously, the iron scale of the drafts crushing shell belt steel surface by planisher, the equipment of spraying water with high pressure can tentatively be removed broken iron scale, thereby make the iron scale of belt steel surface under the effect of iron brush, remove more thoroughly, and owing to reduced the live load of iron brush, so improved the service life of brush.

6. be provided with the roll wiper on the planisher described in the utility model, it can remove whenever the rotate a circle iron scale of institute's adhesive tape of roll, avoids iron scale to press on thereafter the band steel with roll once more, has therefore reduced the removing difficulty in later stage, improved operating efficiency, therefore be beneficial to and apply.

Description of drawings

Fig. 1 is the structural representation of planisher;

Fig. 2 is the structural representation of anacidity derusting device.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further.

With reference to Fig. 1, a kind of planisher mainly comprises frame 12, smooth lower roll 13, smooth depress roller 14, is fixed with roll and wipes examination device 15 on frame 12, and the termination of described roll wiper 15 contacts with smooth lower roll 13, smooth depress roller 14.Roll is wiped examination device 15 can be removed its surface adhesion in the roll rotary course iron scale, avoids iron scale to be pressed into the band steel once more, has therefore reduced the difficulty of later stage removing.

Should be appreciated that; described roll wiper 15 is not limited to be fixed on the frame 12; because when reality is used, can as required it be arranged on any position easily; as long as can contacting with roll, its termination it is realized the purpose of scraping, so all should be within protection domain of the present utility model.

Can know that roll has certain-length in the axial direction, so roll wiper 15 should have the length that adapts with roll to remove the iron scale of each position of roll.

Certainly, roll wiper 15 can have form and structure arbitrarily, such as being a wiper that is strapped on the support, perhaps it is arranged to one as required and scrapes wiping board, as long as can realize friction between itself and the roll.

Preferably, described roll wiper 15 is wire brushes, because find in test, the stiffness of wire brush can produce bigger friction between itself and roll, thereby removes the iron scale of roller surface preferably.

Wire brush can be made with steel wire, certainly, can consider that also cost problem or raw material are equipped with problem and select to make with iron, copper or other metal materials.

Preferably, described roll wiper 15 is hairbrush, can determine whether according to the size of actual iron scale removing amount using, and can select to use hairbrush for the roll that the adhesion amount of iron scale is little, cost can be saved like this, and roller surface can be avoided damaging.

The hair of hairbrush can be prepared from plastics, also can adopt other to prepare as elastomeric material.

With reference to Fig. 2, a kind of hot-strip anacidity derusting device that uses above-mentioned planisher, it comprises from front to back successively with the lower part: emulsion supply equipment 1, planisher 2, the equipment 3 that sprays water with high pressure, iron brush 4, cleaning, drying equipment 5 and coiling machine 6, described each several part all connects by band steel 7.

Described equipment is horizontally disposed successively on a production line.Spray emulsion through the emulsion supply equipment to the hot rolling belt steel surface, control band steel enters planisher and carries out smooth then, the main effect of planisher is the iron scale by drafts crushing shell belt steel surface, the emulsion that strip steel surface adds when smooth is lubricated it and cools off, after smooth, the roll wiper will be attached to the iron scale wiped clean on the roll, high pressure water washing is adopted on strip steel surface, the preliminary iron scale of removing fragmentation, for the iron scale that makes strip steel surface remove more thorough, behind the high pressure water washing, adopt the brush of iron in groups to scrub the surface of strip steel continuously again, reach the effect of removing iron scale fully, then through cleaning, the whole operation process of anacidity rust cleaning is finished in oven dry and operation such as batch.

Planisher can adopt two rollers, also can adopt four rollers, and the reduction ratio of planisher is controlled to be, general steel plate: 3～8%, and silicon steel 5～10%; The pressure of the water under high pressure that smooth afterflush is used adopts 6.3～16.3MPa, and the iron brush of scrubbing steel band adopts two groups, and every group has two cover brushes, can realize described purpose preferably like this.

This process of going up is applicable to discontinuous rust cleaning process, each volume rust cleaning separately just.And for continuous rust cleaning, then must be through welding and kink technology, to guarantee the rust cleaning operating continuity.Therefore, described anacidity derusting device also comprises uncoiler 8, pinch roll 9, bonding machine 10 and the kink 11 that is arranged on emulsion supply equipment 1 the place ahead, and described each several part all connects by band steel 7.During work, hot-rolled sheet coil passes through uncoiler 8, pinch roll 9, bonding machine 10 and kink 11 successively, sprays into emulsion through the emulsion supply equipment to its surface, enters planisher then and carries out smooth getting final product, and subsequent process is with aforementioned consistent.

In addition; present embodiment is just done an exemplary illustration and is not limited its protection domain the utility model; in actual use; those skilled in the art can carry out structural change to it according to the aim of this paper fully; and under the prerequisite of not paying creative work with respect to the utility model just to its altered structure; all be considered as being equal to replacement to of the present utility model, so all within protection domain of the present utility model.

Claims

1. planisher, mainly comprise frame (12), smooth lower roll (13), smooth depress roller (14), it is characterized in that: be fixed with roll on the described frame (12) and wipe examination device (15), the termination of described roll wiper (15) contacts with smooth lower roll (13), smooth depress roller (14).

2. planisher according to claim 1 is characterized in that described roll wiper (15) is a wire brush.

3. planisher according to claim 1 is characterized in that described roll wiper (15) is a hairbrush.

4. hot-strip anacidity derusting device that uses the described planisher of claim 1, it is characterized in that comprising successively from front to back with the lower part: emulsion supply equipment (1), planisher (2), the equipment that sprays water with high pressure (3), iron brush (4), cleaning, drying equipment (5) and coiling machine (6), described each several part all passes through band steel (7) and connects.

5. hot-strip anacidity derusting device according to claim 4, it is characterized in that also comprising the uncoiler (8), pinch roll (9), bonding machine (10) and the kink (11) that are arranged on emulsion supply equipment (1) the place ahead, described each several part all passes through band steel (7) and connects.