CN102189135A - System and method for quickly removing oxidized iron sheet from surface of cold-state strip steel - Google Patents
System and method for quickly removing oxidized iron sheet from surface of cold-state strip steel Download PDFInfo
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- CN102189135A CN102189135A CN 201010125119 CN201010125119A CN102189135A CN 102189135 A CN102189135 A CN 102189135A CN 201010125119 CN201010125119 CN 201010125119 CN 201010125119 A CN201010125119 A CN 201010125119A CN 102189135 A CN102189135 A CN 102189135A
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Abstract
The invention relates to the field of cold rolling, in particular to equipment and a method for removing sundries of the cold-state lower surface of a hot-rolled steel plate. A system for quickly removing the oxidized iron sheet from the surface of cold-state strip steel comprises combined nozzle matrixes and two turning rolls which are distributed up and down; the strip steel turns through the turning rolls; the turning rolls bend two working surfaces of the strip steel; the strip steel and the two turning rolls form an S shape; one combined nozzle matrix is arranged outside each turning roll; and the spraying position of each combined spray matrix corresponds to the strip steel through the surfaces of the turning rolls. A method for quickly removing the oxidized iron sheet from the surface of cold-state strip steel comprises the following steps of: bending cold-sate strip steel, injecting the surface of the cold-state strip steel by a jet to remove the oxidized iron sheet, and finally recycling water. By fully using the high-pressure pure water jet flows, scales are removed from the surface of the cold-state strip steel on line; acid liquor is not required, the device and the method are environment-friendly, the removal efficiency of the method is higher than that of acid washing, and the production conditions of workers, delivery room building requirements and the like are greatly improved; and the method and the device have wide application prospect in the cold-rolling production field.
Description
Technical field
The present invention relates to cold rolling field, relate in particular to a kind of Apparatus and method for of removing hot rolled steel plate cold conditions lower surface foreign material.
Background technology
Metal material such as steel, alloy can form the fine and close covering (being commonly called as " firecoat ") that one deck is made up of metal oxide on the surface in rolling processing procedure.The existence of firecoat can impact further processing processing: make the surface crack of material be difficult for being found in advance on the one hand, thereby make the finished product that processes have quality problems; Easily firecoat is pressed into the metal surface on the other hand, causes surface quality problems; In addition, the existence of hard oxide can be quickened the wearing and tearing of roll or drawbench.
In order to eliminate the influence of oxide to the metallic article quality, generally adopt the solution of sulfuric acid, hydrochloric acid and hydrofluoric acid both at home and abroad, oxide (being commonly called as " de-scaling ") by chemical reaction dissolution of metals surface, the acid mist that the pickling de-scaling produces produces surrounding enviroment and pollutes, to production facility requirement for anticorrosion height; The acid solution processing cost height of discharging also can pollute surrounding enviroment; Adopt the pickling de-scaling to cause de-scaling inhomogeneous easily, and metal loss is big.In order to solve the problem of environmental pollution that pickling causes, researcher has carried out a large amount of research, multiple technologies and equipment have been developed, remove the firecoat of metal surface to substitute pickling, grind as electrolysis de-scaling, electrolysis and eliminate squama, discharge de-scaling, electron beam de-scaling, laser de-scaling, grind the descaling method of de-scaling, liquid rotoblasting (claiming the high pressure liquid sandblast de-scaling again), ball blast de-scaling, alternating bending de-scaling and the combination of above-mentioned distinct methods.
Based on this, Chinese patent CN1781667A has designed a kind of high pressure water shot blasting descaling device at steel, this device with after abrasive material mixes, carries out high velocity jet with a rated high voltage to steel surface by water under high pressure, utilizes the scouring force of abrasive material to realize the scale removal effect of surface of steel plate.Yet, this mode is used comparatively desirable on production lines such as bar, slab and hot rolling, just be difficult to meet the demands but on rolling mill production line, want to use, because cold rolling speed height, continuity are extremely strong, need online a large amount of abrasive materials mixing of carrying out, that is that all right in actual use is ripe for this technology, therefore also just is difficult to be used on the cold rolling tinuous production; In addition, the high-pressure spray descaling system of Chinese patent CN2036455U design is also only carried out de-scaling at the steel cord, can't satisfy the big width of band steel, at a high speed, continuous de-scaling requirement; Simultaneously, Chinese patent CN101134208A has designed the high-pressure cleaning device behind a kind of strip pickling, though adopted the pure water of certain pressure, it is subjected to restrictions such as arrangement, hydraulic pressure, spray regime, only can be used to clean residual acid.
Summary of the invention
Technical problem to be solved by this invention provides a kind of quick removal cold conditions belt steel surface iron scale system and method, this system and method utilizes the cold conditions belt steel surface after High-Pressure Water washes away bending, removed cold conditions belt steel surface iron scale fast, reduce the acid solution consumption, improved operating efficiency.
The present invention is achieved in that a kind of quick removal cold conditions belt steel surface iron scale system, comprise built up nozzle matrix and slewing rollers, the band steel turns to by slewing rollers, described slewing rollers have two and arrange up and down, two working surfaces to the band steel carry out bending respectively, band steel and two slewing rollers are formed " S " type jointly, and each slewing rollers all is furnished with a cover built up nozzle matrix outward, and the eject position of described built up nozzle matrix is surperficial corresponding with the slewing rollers of being with steel to pass through.
The angle of the tangent line of the injection direction of nozzle and slewing rollers roll surface is 15 °～50 ° in the described built up nozzle matrix.
Nozzle has 3 row in the described built up nozzle matrix.
Described slewing rollers also are furnished with collecting pit, water cycle of treatment system connectivity between described collecting pit and the built up nozzle matrix.
The described water treatment circulatory system comprises collecting pit, inlet pipeline, first throttle valve, filter, cistern, second choke valve, aflter-fillter, pure water case, high-pressure pump, the 3rd choke valve and outlet pipeline that connects in turn with pipeline, also be communicated with pure water on the described pure water case and replenish pipeline, described collecting pit has two belows that are arranged in two slewing rollers, described inlet pipeline has two collecting pits of two connections in parallel, and described outlet pipeline has two built up nozzle matrixes of two connections in parallel.
The screen pack aperture is 40 orders～150 orders in the described filter.
The screen pack aperture is 10 orders～40 orders in the described aflter-fillter.
A kind of method of quick removal cold conditions belt steel surface iron scale may further comprise the steps:
1) crooked cold conditions band steel utilizes slewing rollers that cold conditions band steel is done greater than the bending of 90 degree less than 180 degree;
2) spray the cold conditions belt steel surface with jet and remove iron scale, with the bend inject high pressure pure water of built up nozzle matrix to cold conditions band steel, the reverse tangential direction angle of injection direction and cold conditions band steel traffic direction is 15 °～50 °, the pressure 40Mpa～80Mpa of pure water jet, flow 8m
3/ h～20m
3/ h;
3) cycling use of water, recycling returning the built up nozzle matrix after the water recovery filtration that contains iron scale of ejecting.
The present invention makes full use of the jet of high pressure pure water, realizes the online de-scaling to the cold conditions belt steel surface; Make the iron scale impurity of belt steel surface produce blind crack by the crooked cold conditions band of slewing rollers steel, then only angle is arrived in cut-out governing, make the impurity of belt steel surface be easy to be washed away; The eject position of nozzle is corresponding with the slewing rollers surface that the band steel passes through, and the stressed position of this belt transect steel has slewing rollers to do supporting pad, even the band steel can not washed out the reliability height by the jet of high pressure pure water when very thin yet; Do not need to use acid solution when more importantly being to use system and method for the present invention to remove the iron scale of cold conditions belt steel surface, very environmental protection, elimination efficiency is also than pickling height, and workman's working condition, delivery room construction requirements or the like have obtained very big improvement; Have broad application prospects at cold rolling production field.
Description of drawings
Fig. 1 is the schematic flow sheet that the present invention of containing pure water recycling system removes cold conditions belt steel surface iron scale system fast;
Fig. 2 is a sectional perspective schematic diagram of the present invention.
Among the figure: 1 built up nozzle matrix, 2 slewing rollers, 3 band steel, 4 collecting pits, 51 first throttle valves, 52 second choke valves, 53 the 3rd choke valves, No. 6 filters, 7 aflter-fillters, 8 high-pressure pumps, 91 inlet pipelines, 92 outlet pipelines, 10 pure water replenish pipeline, 11 cisterns, 12 pure water casees.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's statement, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As shown in Figure 1, a kind of quick removal cold conditions belt steel surface iron scale system, comprise built up nozzle matrix 1 and slewing rollers 2, described built up nozzle matrix 1 is made of 1～4 row nozzle, the quantity of every capable nozzle matches with the width of band steel 3, the built up nozzle matrix 1 that the 3 row nozzles of selecting for use in the present embodiment constitute, the eject position of built up nozzle matrix 1 is surperficial corresponding with the slewing rollers 2 of being with steel 3 to pass through; Band steel 3 turns to by slewing rollers 2 during work, slewing rollers 2 have two and arrange up and down, traffic direction according to band steel 3, two working surfaces to band steel 3 carry out the bending that angle is β respectively, make band steel 3 and two slewing rollers 2 form " S " type jointly, when crooked in the present embodiment angle of bend β be 135 degree, band steel 3 crooked clockwise 135 degree during, crooked counterclockwise 135 degree during by second slewing rollers by first slewing rollers.
Of particular note, water cycle of treatment system connectivity between collecting pit described in the present invention 4 and the built up nozzle matrix 1.It is to comprise the collecting pit 4 that connects in turn with pipeline that the described water treatment circulatory system can further describe, inlet pipeline 91, first throttle valve 51, a filter 6, cistern 11, second choke valve 52, aflter-fillter 7, pure water case 12, high-pressure pump 8, the 3rd choke valve 53 and outlet pipeline 92, also be communicated with pure water on the described pure water case 12 and replenish pipeline 10, described collecting pit 4 has two belows that are arranged in two slewing rollers 2, described inlet pipeline has two collecting pits 4 of two connections in parallel, and described outlet pipeline has two built up nozzle matrixes 1 of two connections in parallel; In the present embodiment, the screen pack aperture is 40 orders～150 orders in the described filter 6, and the screen pack aperture is 10 orders～40 orders in the described aflter-fillter 7.
In the present embodiment, the angle α of the tangent line of the injection direction of nozzle and slewing rollers roll surface is 15 °～50 ° in the described built up nozzle matrix 1, as preferably, selects 30 ° injection direction.
A kind of method of quick removal cold conditions belt steel surface iron scale may further comprise the steps:
1) crooked cold conditions band steel utilizes slewing rollers that cold conditions band steel is done greater than the bending of 90 degree less than 180 degree; Be subjected under the effect of the crooked radian of roll surface and tensile force, corrosion layer, the attached crop on band steel 3 surfaces produce a series of blind crack rapidly;
2) spray the cold conditions belt steel surface with jet and remove iron scale, with the bend inject high pressure pure water of built up nozzle matrix to cold conditions band steel, the reverse tangential direction angle of injection direction and cold conditions band steel traffic direction is 15 °～50 °, the pressure 40Mpa～80Mpa of pure water jet, flow 8m
3/ h～20m
3/ h, 30 ° of the reverse tangential direction angles of preferred injection direction and cold conditions band steel traffic direction in the present embodiment, pure water jet pressure 60Mpa, flow 10m
3The multi-level injection that is the angle of inclination of the high-speed jet that/h, built up nozzle matrix penetrate, wash away, realized quick removing belt steel surface;
3) cycling use of water, recycling returning the built up nozzle matrix after the water recovery filtration that contains iron scale of ejecting, ejection medium of the present invention adopts industrial pure water, is the conserve water resource, adopts the recycling technology to recycle.After the built up nozzle matrix was injected into the high pressure pure water on band steel 3 surfaces, pure water splashed, falls under the gravity effect in the collecting pit 4, contains a large amount of iron filings, impurity etc. in the collecting pit 4, need filter.Therefore, impure water in the collecting pit 4 flows into No. one time filter 6 by inlet pipeline 91 behind first throttle valve 51, its objective is and remove big impurity, the screen pack aperture of installing in filter 6 is 40 orders～150 orders, preferred 40 orders in the present embodiment, its objective is and filter the above large-scale impurity of 40 orders, the water after once filter this moment enters cistern 11.Water in the cistern 11 still also has a large amount of granules rolling at this moment, can't directly enter high-pressure pump 8, therefore water impurity in the cistern 11 is led to aflter-fillter 7, the mesh of installing in the aflter-fillter 7 is 10 orders～40 orders, preferred 10 orders in the present embodiment, its objective is the impurity in the thorough removing water, guarantee to be output as clean pure water, clean pure water is input in the pure water pond 12.High-pressure pump 8 direct water with pure water pond 12 were introduced in the outlet pipeline 92 and were sent into built up nozzle matrix 1 this moment, realized the recycling of pure water.Because pure water washes away, reclaims in injection in the filter process, always can there be the loss of certain depth, therefore a pure water also must be installed in pure water pond 12 replenish pipeline 10, its objective is that the reservoir storage of guaranteeing pure water pond 12 remains at level of security.
Claims (8)
1. remove cold conditions belt steel surface iron scale system fast for one kind, it is characterized in that: comprise built up nozzle matrix (1) and slewing rollers (2), band steel (3) turns to by slewing rollers (2), described slewing rollers (2) have two and arrange up and down, two working surfaces to band steel (3) carry out bending respectively, band steel (3) and common " S " type of forming of two slewing rollers (2), all be furnished with a cover built up nozzle matrix (1) outside each slewing rollers (2), the eject position of described built up nozzle matrix (1) is surperficial corresponding with the slewing rollers (2) of being with steel (3) to pass through.
2. quick removal cold conditions belt steel surface iron scale as claimed in claim 1 system, it is characterized in that: the angle of the tangent line of the injection direction of nozzle and slewing rollers roll surface is 15 °～50 ° in the described built up nozzle matrix (1).
3. quick removal cold conditions belt steel surface iron scale as claimed in claim 2 system, it is characterized in that: nozzle has 3 row in the described built up nozzle matrix (1).
4. quick removal cold conditions belt steel surface iron scale as claimed in claim 1 system, it is characterized in that: described slewing rollers (2) also are furnished with collecting pit (4), water cycle of treatment system connectivity between described collecting pit (4) and the built up nozzle matrix (1).
5. quick removal cold conditions belt steel surface iron scale as claimed in claim 4 system, it is characterized in that: the described water treatment circulatory system comprises the collecting pit (4) that connects in turn with pipeline, inlet pipeline (91), first throttle valve (51), a filter (6), cistern (11), second choke valve (52), aflter-fillter (7), pure water case (12), high-pressure pump (8), the 3rd choke valve (53) and outlet pipeline (92), also be communicated with pure water on the described pure water case (12) and replenish pipeline (10), described collecting pit (4) has two belows that are arranged in two slewing rollers (2), described inlet pipeline has two two collecting pits (4) that are communicated with in parallel, and described outlet pipeline has two two built up nozzle matrixes (1) that are communicated with in parallel.
6. quick removal cold conditions belt steel surface iron scale as claimed in claim 5 system, it is characterized in that: the screen pack aperture is 40 orders～150 orders in the described filter (6).
7. quick removal cold conditions belt steel surface iron scale as claimed in claim 5 system, it is characterized in that: the screen pack aperture is 10 orders～40 orders in the described aflter-fillter (7).
8. method of removing fast cold conditions belt steel surface iron scale is characterized in that: may further comprise the steps:
1) crooked cold conditions band steel utilizes slewing rollers to make cold conditions band steel do equal and opposite in direction twice, the direction opposite curvature, and angle of bend is spent less than 180 greater than 90 degree;
2) spray the cold conditions belt steel surface with jet and remove iron scale, with the bend inject high pressure pure water of built up nozzle matrix to cold conditions band steel, the reverse tangential direction angle of injection direction and cold conditions band steel traffic direction is 15 °～50 °, the pressure 40Mpa～80Mpa of pure water jet, flow 8m
3/ h～20m
3/ h;
3) cycling use of water, recycling returning the built up nozzle matrix after the water recovery filtration that contains iron scale of ejecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010125119 CN102189135A (en) | 2010-03-16 | 2010-03-16 | System and method for quickly removing oxidized iron sheet from surface of cold-state strip steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010125119 CN102189135A (en) | 2010-03-16 | 2010-03-16 | System and method for quickly removing oxidized iron sheet from surface of cold-state strip steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102189135A true CN102189135A (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010125119 Pending CN102189135A (en) | 2010-03-16 | 2010-03-16 | System and method for quickly removing oxidized iron sheet from surface of cold-state strip steel |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013174232A1 (en) * | 2012-05-25 | 2013-11-28 | 宝山钢铁股份有限公司 | Cold state metal plate strip surface treatment system and treatment method thereof |
| CN103418625A (en) * | 2012-05-25 | 2013-12-04 | 宝山钢铁股份有限公司 | Jet de-scaling system and method for surfaces of metal bars and wires |
| CN103418622A (en) * | 2012-05-25 | 2013-12-04 | 宝山钢铁股份有限公司 | Continuous cold-state metal plate strip surface jet descaling system and method |
| CN103418624A (en) * | 2012-05-25 | 2013-12-04 | 宝山钢铁股份有限公司 | Continuous cold-state metal plate strip jet descaling technology |
| CN103894429A (en) * | 2014-03-28 | 2014-07-02 | 宝山钢铁股份有限公司 | Descaling unit arrangement method for jet descaling and jet descaling method for decaling unit arrangement |
| CN104998915A (en) * | 2015-06-19 | 2015-10-28 | 浙江天宁合金材料有限公司 | Copper and copper alloy strip hot-rolling online surface scale collection device |
| CN105013840A (en) * | 2015-06-19 | 2015-11-04 | 浙江天河铜业股份有限公司 | On-line device for collecting surface scale of copper and copper alloy strip material in hot rolling process |
| CN105964710A (en) * | 2016-06-21 | 2016-09-28 | 广西梧州市金海不锈钢有限公司 | High pressure water descaling device and descaling method |
| CN107225154A (en) * | 2017-07-27 | 2017-10-03 | 合肥东方节能科技股份有限公司 | It is oriented to stable Edge curl preventing cutting guide and guard |
| CN107377638A (en) * | 2017-07-27 | 2017-11-24 | 合肥东方节能科技股份有限公司 | The anti-iron filings blocking type circulating cooling device of guide and guard |
| CN108311460A (en) * | 2018-05-05 | 2018-07-24 | 瑞安市申远锻件机械有限公司 | A kind of forging line descales equipment |
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Cited By (18)
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|---|---|---|---|---|
| CN103418622B (en) * | 2012-05-25 | 2016-01-27 | 宝山钢铁股份有限公司 | A kind of cold conditions metal plate and belt surface solid jet descaling system and method |
| US9604268B2 (en) | 2012-05-25 | 2017-03-28 | Bahoshan Iron & Steel Co., Ltd. | Cold state metal plate strip surface treatment system and treatment method of the same |
| CN103418624B (en) * | 2012-05-25 | 2016-01-27 | 宝山钢铁股份有限公司 | A kind of cold conditions metal plate and belt solid jet descaling process |
| CN103418623B (en) * | 2012-05-25 | 2016-06-01 | 宝山钢铁股份有限公司 | A kind of cold conditions metal plate and belt superficial treatment system and treatment process thereof |
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| CN103418624A (en) * | 2012-05-25 | 2013-12-04 | 宝山钢铁股份有限公司 | Continuous cold-state metal plate strip jet descaling technology |
| CN103418622A (en) * | 2012-05-25 | 2013-12-04 | 宝山钢铁股份有限公司 | Continuous cold-state metal plate strip surface jet descaling system and method |
| CN103894429A (en) * | 2014-03-28 | 2014-07-02 | 宝山钢铁股份有限公司 | Descaling unit arrangement method for jet descaling and jet descaling method for decaling unit arrangement |
| CN105013840A (en) * | 2015-06-19 | 2015-11-04 | 浙江天河铜业股份有限公司 | On-line device for collecting surface scale of copper and copper alloy strip material in hot rolling process |
| CN104998915B (en) * | 2015-06-19 | 2017-03-08 | 浙江天宁合金材料有限公司 | The online surface scale collection device of Copper and brass strip hot rolling |
| CN104998915A (en) * | 2015-06-19 | 2015-10-28 | 浙江天宁合金材料有限公司 | Copper and copper alloy strip hot-rolling online surface scale collection device |
| CN105964710A (en) * | 2016-06-21 | 2016-09-28 | 广西梧州市金海不锈钢有限公司 | High pressure water descaling device and descaling method |
| CN107377638B (en) * | 2017-07-27 | 2019-03-05 | 合肥东方节能科技股份有限公司 | The anti-iron filings blocking type circulating cooling device of guide and guard |
| CN107225154A (en) * | 2017-07-27 | 2017-10-03 | 合肥东方节能科技股份有限公司 | It is oriented to stable Edge curl preventing cutting guide and guard |
| CN107377638A (en) * | 2017-07-27 | 2017-11-24 | 合肥东方节能科技股份有限公司 | The anti-iron filings blocking type circulating cooling device of guide and guard |
| CN108311460A (en) * | 2018-05-05 | 2018-07-24 | 瑞安市申远锻件机械有限公司 | A kind of forging line descales equipment |
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Application publication date: 20110921 |