CN102172835A - Cold metal plate strip cold continuous rolling production line and production method - Google Patents
Cold metal plate strip cold continuous rolling production line and production method Download PDFInfo
- Publication number
- CN102172835A CN102172835A CN2010106214735A CN201010621473A CN102172835A CN 102172835 A CN102172835 A CN 102172835A CN 2010106214735 A CN2010106214735 A CN 2010106214735A CN 201010621473 A CN201010621473 A CN 201010621473A CN 102172835 A CN102172835 A CN 102172835A
- Authority
- CN
- China
- Prior art keywords
- metal plate
- belt
- jet
- production line
- continuous rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a cold metal plate strip cold continuous rolling production line, which comprises at least uncoiling machine (1), a plate strip head and tail cutting machine (2), welding equipment (17), a stretching and straightening device (4), at least one jet flow descaling unit (5), tension rolls (11), a trimming device (15), randomly selected cold continuous rolling machine set (9), flying shears (7), a coiling machine (8), and a movable sleeve device, wherein the stretching and straightening device (4) comprises at least two tension roll groups (11) and a bending roll group (12); the tension roll groups (11) are arranged in front and at back of the jet flow descaling unit (5) respectively; and the movable sleeve device is only welded between the welding equipment and the stretching and straightening device (4). When the continuous type metal plate strip cold continuous rolling production line and a high-pressure jet flow descaling mode are improved, the productivity of the cold continuous rolling line is improved obviously, the environmental-protection control index of the cold rolling process segment is obviously improved, and the floor area and maintenance cost of the production line are reduced.
Description
Technical field
The present invention relates to the clearance technique field of cold conditions metal plate and belt surface firecoat, being mainly used in realization carries out continous way to the attached crop in cold conditions metal plate and belt surface etc. and removes fast, its attached crop comprises as the corrosion layer of iron scale (being commonly called as firecoat) that produces during the hot rolling and surface attachment, adhesion etc., guarantee that the metal plate and belt surface presents bright and clean background color, effectively improves the surface quality of metal plate and belt postprocessing working procedures.
Background technology
Metal material such as steel, alloy is in hot rolling or heat treatment process, can form the fine and close covering that one deck is made up of metal oxide on the surface, be commonly called as " firecoat ", the existence of this 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.Therefore, enter the preceding metal plate and belt surface firecoat of cold-rolling mill and remove operation, be called one of technological equipment indispensable on the cold rolling product line.
Influence at surperficial firecoat, the cold rolling product line of metal plate and belt all adopts the processing mode of descaling bath to remove metal plate and belt surface firecoat both at home and abroad, as generally adopting sulfuric acid at present, the Acidwash solution of hydrochloric acid and hydrofluoric acid, oxide (being commonly called as " de-scaling ") and other attached crops on the chemical reaction dissolution of metals surface by acid tank inside, therefore the present the most cold rolling product line of main flow all has the acid cleaning process link, therefore continuous cold rolling produces line and is also referred to as sour rolling line, specifically referring to shown in Figure 1, the arrangement form of this class product line is as follows usually: 1) after uncoiler 1 uncoiling, under band steel toe tail cutter 2 acts on welding machine 17, form continuous strip; 2) strip 10 because pickling speed is directly influenced by technology, can't be controlled before entering straightening 4 and pickling 18 flexibly, therefore must be before straightening 4, i.e. arrange a kink 3 before the pickling 18, as buffering; 3) band steel 10 moves to circle shear and cut edge before 19, also must be provided with a kink 3 ', so purpose is to guarantee circle shear 19 when needs are changed cutterhead, band steel 10 must remain static, so need kink 3 '; 4) between circle shear 19 and milling train 9, be provided with a kink 3 equally ", its objective is that the band steel 10 into guaranteeing milling train 9 is sufficient all the time, do not influence the production capacity performance of main rolling equipment.
It is the main arrangement form of the cold rolling product line of present iron and steel enterprise that the product line is rolled in the acid of this form, it realizes the special process speed of pickling special process speed, circle shear special process speed and main mill is integrated by three kinks, realizes the lasting continuity endless rolling of cold rolling line.Must use acid tank to carry out the pickling de-scaling in this technology arrangement, and the acid mist that pickling descaling process section produces produces serious pollution to surrounding enviroment, this is to production facility requirement for anticorrosion height; The acid solution processing cost of its discharging simultaneously is higher, can produce a large amount of sewage in the acid regeneration process, directly environment is caused severe contamination; In addition, 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 the descaling method that eliminates squama, discharge de-scaling, electron beam de-scaling, laser de-scaling, grinding de-scaling, ball blast de-scaling, alternating bending de-scaling and the combination of above-mentioned distinct methods as electrolysis de-scaling, electrolysis, but all these new methods or technology all can't substitute the continuous acid-washing groove on the existing cold rolling product line.
Based on this, domestic new product line layout aspect at this de-scaling does not also have the innovation and creation that can consult, mainly also rests on local updating to external pickling descaling device, transformation etc.Abroad, especially metallurgical technology developed countries such as Japan, Germany lead the whole world all the time to the innovation of technique of scale removal.Wherein Japanese JP06108277A discloses and adopted spray acid and the descaling process that brush roll is used in combination on the continuous cold rolling line, utilizes this compound mode to replace existing descaling bath technology.Because this mode is still wanted a large amount of use acid solutions, very strict to the requirements such as nozzle of spraying acid simultaneously, the therefore pollution problem that does not fundamentally solve cold rolling product line.Japan JP55034688A discloses the rolling scale breading of a kind of associating PV-compound abrasive high-pressure spray de-scaling mode, compound abrasive high-pressure spray de-scaling unit is furnished with 4, be series connection, realization is to the anacidity de-scaling of cold conditions metal plate and belt, this mode must adopt a large amount of tiny abrasive materials, and abrasive material replenish, detect and with separating of firecoat mixture etc. technical difficulty all very high, the realistic meaning of realization is less.After Japan JP57142710A discloses the first roll extrusion of a kind of employing, utilize the mode of brush roll-high-pressure water jet that the high temperature hot rolled plate is carried out de-scaling again, its de-scaling rate reaches 80%, then continues to adopt traditional final de-scaling of pickling mode; Japanese in addition JP57068217A discloses a kind of cold conditions hot-rolling metal strip cal rolling at cold rolling inlet, adopts heavy reduction rate 4%～40%, realizes scale breading, loose squama, and is follow-up immediately following the high-pressure spray processing, by 20～150kg/cm of nozzle ejection
2, preferred 50-150kg/cm
2Water under high pressure carry out de-scaling, the metal plate and belt after so handling can curl to deliver or directly enter cold-rolling mill and carry out cold rolling; Simultaneously, Japanese JP59097711A discloses a kind of compressed air+abrasive material of high pressure that adopts and has carried out the mixing jetting de-scaling, and clearance rate is up to " 65～95% ".Simultaneously, Canadian TMW company discloses a series of clearance technique at metal plate and belt surface firecoat after calendar year 2001, for example US20080108281 (A1), US20080182486 (A1) and US20090227184 (A1) etc., all disclose a kind of abrasive material and mixed mud of water of utilizing and carried out jet cleaning, this mode has run into the branch, abrasive wear detection technique of abrasive material and firecoat equally and has replenished technical bottleneck such as technology automatically, therefore is difficult to realize; In addition, the US5388602 high pressure water jet cleaning device of West Europe Danieli company application is primarily aimed at various continuous casting billet and carries out de-scaling, can't satisfy cold rolling requirement; Japan Patent JP05092231A, JP09085329A and JP2002102915 etc., it adopts the application occasion of high-pressure water jet de-scaling only to be the forging base during hot steel billet or the forging.
Downstream in the descaling process section, for guaranteeing during metal plate and belt enters tandem rolling unit rolling abnormal accidents such as broken belt not to take place under the unit high-tension control criterion of front and back, the production scene adopts circle shear to the processing of vertically cutting edge of metal plate and belt surface usually, its objective is the quality that improves limit portion, reduce limit portion crackle expansion etc., yet, along with other kinds such as the increase of high-strength steel proportion and silicon steel are expanded fast, traditional circle shear usually causes unusual tipping or phenomenon such as stuck, directly influences the production capacity performance that whole piece produces line.Therefore, utilize new shearing technique to replace existing circle shear and seem very necessary.
Summary of the invention
The object of the present invention is to provide a kind of cold conditions metal plate and belt cold continuous rolling production line.
For guaranteeing that continuous cold conditions metal plate and belt rolling mill production line has desirable effect of rolling, the present invention mainly adopts following measure:
1) equipment cutter and welding equipment end to end are installed behind the uncoiler, realize that metal plate and belt is without a head continuous, rely on kink simultaneously, realize the output downstream that metal plate and belt without a head is stable;
2) the tension straingtening device is under the certain force of strain level, and realization impels surperficial firecoat loosening to the stretching scale breading that the cold conditions metal plate and belt continues;
3) arrange separately or the quick removing of surperficial firecoat is realized by the high-pressure spray de-scaling in a plurality of high-pressure spray de-scalings unit of arranged in series, realize based on rolling mill speed to the descaling process requirement under the friction speed.
For achieving the above object, continous way metal plate and belt cold continuous rolling production line of the present invention comprises: at least one uncoiler (1) successively; Strip is cutter (2) and welding equipment (17) end to end; Tension straingtening device (4), it comprises at least two jockey pulley groups (11) and bending roll group (12); At least one jet de-scaling unit (5), jockey pulley group (11) is separately positioned on the front and back of jet de-scaling unit (5); Trimming device (15); Optional tandem mills (9); Flying shearing machine (7); Coiling machine (8); And only between welding equipment and tension straingtening device, be provided with one the cover looper.
Preferably, jet de-scaling unit (5) comprises at least two pinch rolls (13) and jet nozzle matrix (14), pinch roll (13) is arranged in the front and back of jet nozzle matrix (14), described jet nozzle matrix is arranged symmetrically in two wide of metal plate and belt, and jet is ejected into two wide of metal plate and belt.
Preferably, in the jet nozzle matrix, the angle of the injection direction of each jet nozzle and metallic plate bandwidth face is 70-110 °, and more preferably the injection direction of nozzle and metallic plate bandwidth face angle are 75-105 °.
Preferably, being distributed as of jet nozzle in the jet nozzle matrix, 20-40/rice on the width of strip, 2-10/rice on the length direction of strip.
Preferably, jet de-scaling unit (5) comprises nozzle matrix and two slewing rollers, described slewing rollers are arranged up and down, two working surfaces to strip carry out bending respectively, strip and two slewing rollers are formed " S " type jointly, each slewing rollers all is furnished with a cover nozzle matrix outward, and the surperficial corresponding of slewing rollers passed through with strip in the position of described nozzle matrix.
Preferably, the angle of the tangent line of the injection direction of nozzle and slewing rollers roll surface is 15-90 ° in the jet nozzle matrix.
Preferably, being distributed as of jet nozzle in the jet nozzle matrix, 20-40/rice on the width of strip, 2-10/rice on the length direction of strip.
Preferably, jockey pulley group (11) is for producing the S forming roll group of length percentage elongation.
Preferably, described trimming device (15) is cut edge for laser or the circle shear side cut.
Preferably, in the above-mentioned production line of the present invention, can 1-11 jet de-scaling unit (5) be set according to the complexity of de-scaling.
Preferably, the medium that jet sprays in the jet de-scaling unit is the mixture of water or water and hard composition granule.
Preferably, the turbidity of the water that jet sprays is for being lower than 5mg/L, and pH is 6.5-7.5, and expulsion pressure is 5-350MPa, 150-200MPa more preferably, flow be the 5-200 liter/minute.
Preferably, the water of jet injection is water for industrial use.
Preferably, the content of hard composition granule is 5-20wt% in the described mixture, and pH is 6.5-7.5, and hard composition granule is a sand shape particle, and its granularity is 20 orders～140 orders, and the expulsion pressure of mixed compound is 5-100MPa, is preferably 30-70MPa.
Preferably, described hard composition granule is selected from least a in garnet, iron sand, shot, river sand, slag powders and the brown corundum.Garnet most preferably wherein, its natural multi-angular particle make mixture know that to squama effect is better.
The working method of continous way metal plate and belt cold continuous rolling production line of the present invention is: the cold rolled metal strip, preferred temperature is not higher than 100 ℃ metal plate and belt, after scurrying the uncoiling of band process uncoiler, move to cutter and welding equipment end to end by roller-way, by shearing end to end and welding the back and realize continuous metal strip without a head, under the cushioning effect of kink, realize the stable output downstream of metal plate and belt; After metal plate and belt enters the tension straingtening device, at first pass through the rubbing action and the speed difference of front and back jockey pulley group, cause metal plate and belt to produce the percentage elongation of certain-length, common difference according to the steel grade specification, its percentage elongation is slightly variant, but general percentage elongation is 0.5%～5.0%, and meanwhile metal plate and belt still keeps certain speed by the bending roll group, under the alternating bending of bending roll group, loosening and crackle to a certain degree can appear in the surperficial firecoat of cold conditions metal plate and belt; So the metal plate and belt of state enters under the stretch percentage elongation of front and back jockey pulley group in the jet de-scaling unit, the jet nozzle matrix that jet de-scaling unit by using metal plate and belt positive and negative is arranged, firecoat to the metal plate and belt upper and lower surface is removed simultaneously, the metal plate and belt firecoat is under micro-crack and the high-pressure spray effect of micro gap in nozzle ejection that preceding operation produces, washed away totally like a cork, finished the de-scaling operation; The metal plate and belt that de-scaling finishes enters the trimming technology section, and the trimming device that this process section is provided with by metal plate and belt width both sides is realized the THE ADIABATIC SHEAR IN to metal plate and belt, causes slitter edge to break away from matrix, finishes the side cut operation of metal plate and belt.Metal plate and belt after so handling can enter tandem mills as required, and depressing of the cold state of finishing is rolling; Finish the metal plate and belt after cold rolling or directly shear segmentation, utilize the coiling machine rolling of curling again, the continuous rolling production of promptly having finished under the metal plate and belt cold state like this through the effect of flying shearing machine without the metal plate and belt of cold continuous rolling.
In above-mentioned continous way metal plate and belt rolling production technology of the present invention, preferably, the unit tension level of jockey pulley group is 2.0～8.0kg/mm
2, the percentage elongation after metal plate and belt stretches through the jockey pulley group is 0.5%～5.0%.
In continous way metal plate and belt cold continuous rolling production line of the present invention, tape running speed and de-scaling complexity according to metal plate and belt, can select series connection that 1-11 jet de-scaling unit is set, its objective is and realize that metal plate and belt obtains better scale removal effect under more speed.The jet width value of the jet de-scaling unit of each can contain the metal plate and belt of the Breadth Maximum specification of this production line.
Above-mentioned continous way metal plate and belt rolling production technology of the present invention, owing to adopt unit type high tension jet descaling device, the acid cleaning process of this and prior art has high requirement contrast to the time span that metal plate and belt enters acid tank, the jet descaling process requires significantly to reduce to the continuity of front and back production line, therefore only adopt a kink to get final product in the rolling mill production line of the present invention, can omit the kink that behind descaling bath, is provided with usually.Metal plate and belt carries out the jet de-scaling under the extended state of certain percentage elongation, can realize breaking and removing of metal plate and belt surface firecoat continuously, thereby the continuity that realizes firecoat is removed fast.The solidliquid mixture that adopts water or be mixed with hard composition granule is as medium, directly substitute existing this highly acid medium, as sulfuric acid, hydrochloric acid or nitric acid, and substitute water spray and pickling hybrid mode, it is very necessary to seem under the overall background of current promotion environmental protection.With respect to traditional pickling descaling process, be equipped with certain roughness levels according to the plate mask after the technology de-scaling of the present invention, this roughness all possesses good facilitation to follow-up Rolling Production, coating processing etc.
The present invention makes full use of the high-pressure spray de-scaling mode under the extended state, realizes high speed, efficient de-scaling effect, has realized only having the novel cold rolling tinuous production of a cover kink.The present invention also helps the energy-saving and emission-reduction ability that improves smelter, improves cold rolled metal board rolling flexibility and production capacity simultaneously.Therefore, the present invention has broad application prospects at cold rolling production field.
Description of drawings
Fig. 1 arranges schematic diagram for the integrated artistic that production line is rolled in traditional acid;
Fig. 2 is that metal plate and belt is in the jet descaling process partial schematic diagram under the extended state in the continuous cold conditions rolling metal plate and tape production line of the present invention.
Fig. 3 is a kind of embodiment schematic diagram of continuous cold conditions rolling metal plate and tape production line of the present invention.
Fig. 4 is a kind of a plurality of series connection de-scalings unit embodiment schematic diagram that is provided with of continuous cold conditions rolling metal plate and tape production line of the present invention.
Fig. 5 is the another kind of embodiment schematic diagram of continuous cold conditions rolling metal plate and tape production line of the present invention.
Fig. 6 is provided with a plurality of series connection de-scalings unit embodiment schematic diagram for the another kind of continuous cold conditions rolling metal plate and tape production line of the present invention.
Fig. 7 and Fig. 8 are in the continuous cold conditions rolling metal plate and tape production line of the present invention, at high-pressure spray de-scaling unit, the schematic diagram of different canoes.
Fig. 9 is the relation curve of high-pressure spray de-scaling units in series quantity and metal plate and belt firecoat clearance rate on the continuous cold conditions rolling metal plate and tape production line of the present invention.
Description of reference numerals
1 uncoiler, 2 is three high-pressure spray de-scaling unit, 6 picklers, 7 flying shearing machine, 8 coiling machines, 9 cold continuous rollings, 10 metal plate and belts of the slitter edge that comes off of cutter, 17 welding equipments, 3 kinks, 4 tension straingtening devices, 11 jockey pulleys, 12 bending rolls, 13 pinch rolls, 14 nozzle matrixes, 5 high-pressure spray descaling devices, 15 trimming devices, 16,9 tandem mills, 5-1～5-3 series connection end to end.
The specific embodiment
Below by the specific embodiment of the present invention characteristics of the present invention are carried out comparatively detailed explanation.
The present invention is by adopting high-pressure spray de-scaling unit to cooperate de-scaling and the continuous rolling that realizes the cold conditions metal plate and belt with the tension straingtening device on the cold conditions metal plate and belt cold continuous rolling production line continuously.
For guaranteeing that continuous cold conditions metal plate and belt rolling mill production line has desirable effect of rolling, the present invention mainly adopts following measure:
1) equipment cutter 2 and welding equipment 17 end to end are installed behind the uncoiler 1, realize that metal plate and belt is without a head continuous, rely on kink 3 simultaneously, realize the output downstream that metal plate and belt without a head is stable;
2) tension straingtening device 4 is under the certain force of strain level, and realization impels surperficial firecoat loosening to the stretching scale breading that cold conditions metal plate and belt 10 continues;
3) arrange separately or the quick removing of surperficial firecoat is realized by the high-pressure spray de-scaling in a plurality of high-pressure spray de-scalings unit 5 of arranged in series, realize based on rolling mill speed to the descaling process requirement under the friction speed.
According to one embodiment of the present invention, high-pressure spray descaling device and tension straingtening device are provided with the cold continuous rolling production of carrying out continuous cold conditions metal plate and belt as shown in Figure 2 and realize the scale breading de-scaling.
According to one embodiment of the present invention, continuous cold conditions metal plate and belt cold continuous rolling production line with above-mentioned setting as shown in Figure 3, comprise a cover or two cover uncoilers 1 are set, and supporting cutter end to end 2 and welding equipment 17, kink 3, the one cover tension straingtening devices 4 of one cover storage strip and buffering and a cover high-pressure spray de-scaling unit 5.Tension straingtening device 4 comprises two jockey pulley groups 11 and a bending roll group 12, and jockey pulley is arranged in the front and back of high-pressure spray de-scaling unit 5, and bending roll is arranged between jockey pulley and the high-pressure spray de-scaling unit.High-pressure spray de-scaling unit is made up of two pinch roll set 13 and jet nozzle matrix 14, and pinch roll set 13 is arranged in the front and back of jet nozzle 14.Also comprise a cover trimming device 15, tandem mills 9 and flying shearing machine 7 are arranged a cover or two cover coiling machines 8 at last.
The working method of this production line is: temperature be not higher than 100 ℃ cold rolled metal strip 10 scurry band through uncoiler 1 uncoiling after, move to cutter 2 and welding equipment 17 end to end by roller-way, by shearing end to end and welding the back and realize continuous metal strip 10 without a head, under the cushioning effect of kink 3, realize metal plate and belt 10 stable outputs downstream; After metal plate and belt 10 enters seven-roll Abramsen machine 4, at first pass through the rubbing action and the speed difference of front and back jockey pulley group 11, cause metal plate and belt 10 to produce the percentage elongation of certain-length, do not wait as 0.5%～4.0%, meanwhile metal plate and belt 10 still keeps certain speed by bending roll group 12, under the alternating bending of bending roll group 12, loosening and crackle to a certain degree can appear in the surperficial firecoat of cold conditions metal plate and belt 10; So the metal plate and belt of state enters in the high-pressure spray de-scaling unit 5 under the stretch percentage elongation of front and back jockey pulley group 11, de-scaling unit 5 utilizes the metal plate and belt positive and negative vertically to return the nozzle matrix 14 that is in tilted layout, respectively metal plate and belt 10 upper and lower surface firecoats are removed simultaneously, the metal plate and belt firecoat at micro-crack that preceding operation produces and micro gap under the high-pressure water jet effect of nozzle 14 injections, washed away totally like a cork, finished the de-scaling operation; The metal plate and belt 10 that de-scaling finishes enters the trimming technology section, and the trimming device 15 that this process section is provided with by metal plate and belt 10 width both sides is realized the THE ADIABATIC SHEAR IN to metal plate and belt 10, causes slitter edge 16 to break away from matrix, finishes the side cut operation of metal plate and belt 10.Metal plate and belt 10 after so handling can enter tandem mills 9, and it is rolling to finish depressing of cold state; The metal plate and belt of finishing after cold rolling 10 is sheared segmentation through the effect of flying shearing machine 7, utilizes coiling machine 8 rolling of curling again, the continuous rolling production of promptly having finished under the metal plate and belt cold state like this.
According to one embodiment of the present invention, the continuous cold conditions metal plate and belt cold continuous rolling production line with above-mentioned setting as shown in Figure 4, part different from the embodiment described above is, three high-pressure spray de-scaling unit 5-1,5-2 and 5-3 arranged in series.Before and after the de-scaling unit of this arranged in series, arrange two jockey pulleys and a bending roll respectively.
According to this embodiment, scurry connection on the tape transport direction of metal plate and belt a plurality of jet de-scalings unit is set, wherein the aforesaid jet width value any and each row's nozzle of the arrangement of each group nozzle can contain the cold-reduced sheet of the Breadth Maximum specification of this product line.The purpose that a plurality of de-scalings unit is set is to realize that metal plate and belt 10 obtains better scale removal effect under more speed.
According to one embodiment of the present invention, continuous cold conditions metal plate and belt cold continuous rolling production line with above-mentioned setting as shown in Figure 5, part different from the embodiment described above is, only arrange a high-pressure spray de-scaling unit, and after the jockey pulley group, do not arrange tandem mills, to satisfy to rolling the different demands of attitude metal plate and belt.
According to one embodiment of the present invention, the continuous cold conditions metal plate and belt cold continuous rolling production line with above-mentioned setting as shown in Figure 6, part different from the embodiment described above is, three high-pressure spray de-scaling unit 5-1,5-2 and 5-3 arranged in series.Before and after the de-scaling unit of this arranged in series, arrange two jockey pulleys and a bending roll respectively, and after the jockey pulley group, do not arrange tandem mills, to satisfy rolling the different demands of attitude metal plate and belt.
Cold conditions metal plate and belt 10 moves to shear 2 and welding equipment 17 end to end after uncoiler 1 uncoiling, by shearing end to end and welding the back and realize metal plate and belt 10 stable outputs downstream under the cushioning effect of kink 3; After metal plate and belt 10 entered draw unit 4, metal plate and belt 10 is (unit tension level 2.0～8.0kg/mm under certain tension level
2) occur significantly becoming flexible and crackle by the firecoat of stretching with metal plate and belt 10 surfaces, bending roll group 12 back; Realized that the metal plate and belt 10 behind the scale breading keeps stretch percentage elongation to enter jet de-scaling unit 5 this moment under the effect of front and back jockey pulley group 11, the washing away and shear action of high-pressure spray water for industrial use, and the firecoat on metal plate and belt 10 surfaces is thoroughly removed; Metal plate and belt 10 after the de-scaling enters cut cells 15 successively and realizes that limit portion shears; Metal plate and belt after so handling directly forms coil of strip by cut-to-length 7 with curling 8.
According to the present invention, if the firecoat of all steel grades all belongs to the row of easy removing in all products of rolling mill production line production, then behind existing seven-roll Abramsen machine, set up a cover high-pressure spray de-scaling unit 5, and after jet de-scaling unit 5, scurry connection trimming device 15 and carry out the shearing of metallic plate band edge portion, so promptly realized the continuous rolling production of cold conditions metal plate and belt.
A preferred embodiment of the invention, jet injection unit adopt the injection apparatus of putting down in writing in another application 201010525195.3 of the applicant as jet de-scaling unit, and the full content of this application is incorporated herein by reference.The working method of this production line is: temperature be not higher than 100 ℃ cold rolled metal strip 10 scurry band through uncoiler 1 uncoiling after, move to cutter 2 and welding equipment 17 end to end by roller-way, by shearing end to end and welding the back and realize continuous metal strip 10 without a head, under the cushioning effect of kink 3, realize metal plate and belt 10 stable outputs downstream; After metal plate and belt 10 enters seven-roll Abramsen machine 4, at first pass through the rubbing action and the speed difference of front and back jockey pulley group 11, cause metal plate and belt 10 to produce the percentage elongation of certain-length, do not wait as 0.5%～5.0%, meanwhile metal plate and belt 10 still keeps certain speed by bending roll group 12, under the alternating bending of bending roll group 12, loosening and crackle to a certain degree can appear in the surperficial firecoat of cold conditions metal plate and belt 10; So the metal plate and belt of state enters in the high-pressure spray de-scaling unit 5 under the stretch percentage elongation of front and back jockey pulley group 11, de-scaling unit 5 utilizes slewing rollers that the cold conditions metal plate and belt 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, the firecoat on strip surface produces a series of blind cracks rapidly, the nozzle matrix jet that utilization is distributed in the slewing rollers outside sprays cold conditions metal plate and belt surface removal firecoat, the angle of injection direction and slewing rollers roll surface tangent line is 15-90 °, perhaps the angle with the reverse tangent line of strip traffic direction is 15-90 °, respectively metal plate and belt upper and lower surface firecoat is removed simultaneously, the metal plate and belt firecoat is under micro-crack and the high-pressure spray effect of micro gap in nozzle ejection that preceding operation produces, washed away totally like a cork, finished the de-scaling operation; The metal plate and belt 10 that de-scaling finishes enters the trimming technology section, and the trimming device 15 that this process section is provided with by metal plate and belt 10 width both sides is realized the THE ADIABATIC SHEAR IN to metal plate and belt 10, causes slitter edge 16 to break away from matrix, finishes the side cut operation of metal plate and belt 10.Metal plate and belt 10 after so handling can enter tandem mills 9, and it is rolling to finish depressing of cold state; The metal plate and belt of finishing after cold rolling 10 is sheared segmentation through the effect of flying shearing machine 7, utilizes coiling machine 8 rolling of curling again, the continuous rolling production of promptly having finished under the metal plate and belt cold state like this.
According to the present invention, being distributed as of jet nozzle in the jet nozzle matrix: 20-40/rice on the width of strip, 2-10/rice on the length direction of strip.
Among the present invention, select the mixture that makes water or contain hard composition granule according to the situation of the strip for the treatment of de-scaling.When selecting to use water as ejection medium, require its turbidity to be lower than 5mg/L, pH is 6.5-7.5, expulsion pressure is 5-350MPa, is preferably 150-200MPa, discharge be the 5-200 liter/minute.When use contains the aqueous mixtures of the hard composition granule of solid, hard composition granule content is 5-20wt%, and hard composition granule granularity is 20 orders-140 orders, and hard composition granule is a sand shape particle, at least a as in garnet, iron sand, shot, river sand, slag powders and the brown corundum preferably used garnet.The expulsion pressure of mixture is 5-100MPa, preferred 40-70MPa, and flow is for according to the flow 5-200 liter of water in the mixture/minute control.
In order to obtain good scale removal effect, the above-mentioned aqueous mixtures that contains hard composition granule of general preferred use.
For rolling mill production line product object is the steel grade that is difficult to remove, steel grade (high-alloy steel, stainless steel and titanium plate etc.) as high alloy content, then behind existing tension straingtening device, set up many cover high-pressure spray de-scalings unit 5, scurry connection each other successively, realize continuous de-scaling, according to rolling steel grade and line speed requirement, but 1～11 group of jet de-scaling of arranged in series unit, after jet de-scaling unit 5, scurry connection trimming device 15 equally, carry out metallic plate band edge portion and shear, realized promptly that so the cold conditions continuous rolling of this special steel grade is produced.
As shown in Figure 9, investigated on the continuous cold conditions rolling metal plate and tape production line under the different tape running speeds, the relation curve of high-pressure spray de-scaling element number and metal plate and belt firecoat clearance rate has been set.Wherein used mixture is the mixture of water and brown corundum, and brown corundum content is 17wt%, and the pH of mixture is 7, and expulsion pressure is under the condition of 80MPa.
As seen from Figure 9, along with the increase of jet de-scaling unit number, the clearance rate of firecoat increases, and after the speed of service of the relative nozzle of metal plate and belt increases to 100m/min by 50m/min, a plurality of nozzle tandem injections are adopted at same cleaning position, could realize that the firecoat 100% under the high speed is removed.
The present invention makes full use of the high-pressure spray de-scaling mode under the extended state, realizes high speed, efficient de-scaling effect, has realized only having the novel cold rolling continuous product line of a cover kink.Because this patent institute employing technology is ripe, can implement, and applies feasible fully.On the other hand, this patent can well adapt to company to the environmental requirement of metallurgical production and the requirement that further promotes product competitiveness, improves the ability of the energy-saving and emission-reduction of smelter, improves cold rolled metal board rolling flexibility and production capacity simultaneously.Therefore, the present invention has broad application prospects at cold rolling production field.
More than by means of specific embodiment the specific embodiment of patent of the present invention has been described; but it should be understood that; here concrete description should not be construed as the qualification to the spirit and scope of the invention; this invention is not only applicable to the continuous rolling production of metal plate and belt; also can apply in the rolling processing of cold conditions of other materials such as non-ferrous metal; the various modifications that all these one of ordinary skilled in the art make the foregoing description after reading this specification, the scope that all belongs to the present invention and protected.
Claims (17)
1. a continous way metal plate and belt cold continuous rolling production line comprises: at least one uncoiler (1) successively; Strip is cutter (2) and welding equipment (17) end to end; Tension straingtening device (4), it comprises at least two jockey pulley groups (11) and bending roll group (12); At least one jet de-scaling unit (5), jockey pulley group (11) is separately positioned on the front and back of jet de-scaling unit (5); Trimming device (15); Optional tandem mills (9); Flying shearing machine (7); Coiling machine (8); And only between welding equipment and tension straingtening device, be provided with one the cover looper.
2. continous way metal plate and belt cold continuous rolling production line as claimed in claim 1, it is characterized in that, jet de-scaling unit (5) comprises at least two pinch rolls (13) and jet nozzle matrix (14), pinch roll (13) is arranged in the front and back of jet nozzle matrix (14), described jet nozzle matrix is arranged symmetrically in two wide of metal plate and belt, and jet is ejected into two wide of metal plate and belt.
3. continous way metal plate and belt cold continuous rolling production line as claimed in claim 2, it is characterized in that, in the jet nozzle matrix, the angle of the injection direction of each jet nozzle and metallic plate bandwidth face is 70-110 °, and the injection direction of preferred nozzle and metallic plate bandwidth face angle are 75-105 °.
4. as the arbitrary described continous way metal plate and belt cold continuous rolling production line of claim 1-3, it is characterized in that jet nozzle is distributed as 20-40/rice on the width of strip, 2-10/rice on the length direction of strip in the jet nozzle matrix.
5. continous way metal plate and belt cold continuous rolling production line as claimed in claim 1, it is characterized in that, jet de-scaling unit (5) comprises nozzle matrix and two slewing rollers, described slewing rollers are arranged up and down, two working surfaces to strip carry out bending respectively, strip and two slewing rollers are formed " S " type jointly, and each slewing rollers all is furnished with a cover nozzle matrix outward, and the surperficial corresponding of slewing rollers passed through with strip in the position of described nozzle matrix.
6. continous way metal plate and belt cold continuous rolling production line as claimed in claim 5 is characterized in that the angle of the tangent line of the injection direction of nozzle and slewing rollers roll surface is 15-90 ° in the jet nozzle matrix.
7. as claim 5 or 6 described continous way metal plate and belt cold continuous rolling production lines, it is characterized in that jet nozzle is distributed as 20-40/rice on the width of strip, 2-10/rice on the length direction of strip in the jet nozzle matrix.
8. as the arbitrary described continous way metal plate and belt cold continuous rolling production line of claim 1-7, it is characterized in that jockey pulley group (11) is for producing the S forming roll group of length percentage elongation.
9. as the arbitrary described continous way metal plate and belt cold continuous rolling production line of claim 1-8, it is characterized in that described trimming device (15) is cut edge for laser or circle shear is cut edge.
10. as the arbitrary described continous way metal plate and belt cold continuous rolling production line of claim 1-9, it is characterized in that, 1-11 jet de-scaling unit (5) is set.
11., it is characterized in that the medium that jet sprays in the jet de-scaling unit is the mixture of water or water and hard composition granule as the arbitrary described continous way metal plate and belt cold continuous rolling production line of claim 1-10.
12. continous way metal plate and belt cold continuous rolling production line as claimed in claim 11 is characterized in that, the turbidity of the water that jet sprays is for being lower than 5mg/L, pH is 6.5-7.5, expulsion pressure is 5-350MPa, 150-200MPa more preferably, flow be the 5-200 liter/minute.
13. continous way metal plate and belt cold continuous rolling production line as claimed in claim 12 is characterized in that, the water that jet sprays is industrial filtration cycle water.
14. continous way metal plate and belt cold continuous rolling production line as claimed in claim 11, it is characterized in that, the content of hard composition granule is 5-20wt% in the described mixture, pH is 6.5-7.5, hard composition granule is a sand shape particle, its granularity is 20 orders～140 orders, and the expulsion pressure of mixed compound is 5-100MPa, is preferably 30-70MPa.
15. continous way metal plate and belt cold continuous rolling production line as claimed in claim 14 is characterized in that, described hard composition granule is selected from least a in garnet, iron sand, shot, river sand, slag powders and the brown corundum.
16. adopt as the arbitrary described production line of claim 1-15 and carry out the technology that continous way metal plate and belt cold continuous rolling is produced, wherein metal plate and belt is through uncoiling, become continuous metal strip without a head after shearing end to end and welding, under the cushioning effect of a cover looper, realize stable output, metal plate and belt is at the extended state of realizing under the jockey pulley group effect of front and back under certain percentage elongation, when keeping this extended state, realize the metal plate and belt aligning by the tension straingtening device, this moment, loosening and crackle appearred in the firecoat on metal plate and belt surface, then metal plate and belt keeps this stretch percentage elongation to enter jet de-scaling unit, respectively with high-pressure spray to the metal plate and belt jet surface, remove firecoat, high-pressure spray adopts high-pressure water jet or is mixed with the solidliquid mixture jet of solid particulate matter; Metal plate and belt after the de-scaling is cut edge, and makes slitter edge break away from matrix; Metal plate and belt after the side cut optionally carries out cold continuous rolling; Last metal plate and belt is sheared segmentation through flying shearing machine, by the curling rolling of coiling machine.
17. continous way metal plate and belt rolling production technology as claimed in claim 16 is characterized in that the unit tension level of jockey pulley group is 2.0～8.0kg/mm
2, the percentage elongation after metal plate and belt stretches through the jockey pulley group is 0.5%～5.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106214735A CN102172835A (en) | 2010-12-30 | 2010-12-30 | Cold metal plate strip cold continuous rolling production line and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106214735A CN102172835A (en) | 2010-12-30 | 2010-12-30 | Cold metal plate strip cold continuous rolling production line and production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102172835A true CN102172835A (en) | 2011-09-07 |
Family
ID=44516179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106214735A Pending CN102172835A (en) | 2010-12-30 | 2010-12-30 | Cold metal plate strip cold continuous rolling production line and production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102172835A (en) |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836890A (en) * | 2012-09-29 | 2012-12-26 | 湖南有色重型机器有限责任公司 | Cold-state stainless steel band or plate descaling process |
| CN103029010A (en) * | 2011-09-30 | 2013-04-10 | 宝山钢铁股份有限公司 | Compact type production process arrangement for metal plate strips |
| CN103302113A (en) * | 2013-06-19 | 2013-09-18 | 鞍钢集团工程技术有限公司 | Vertical tension roller device |
| 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 |
| CN103464505A (en) * | 2013-09-06 | 2013-12-25 | 武汉钢铁(集团)公司 | Device and method for producing high-frequency roll welding multilayer composite plate |
| CN103481201A (en) * | 2013-10-16 | 2014-01-01 | 山西太钢不锈钢股份有限公司 | Device and method for continuously descaling on surface of metal plate strip |
| CN103706637A (en) * | 2013-12-31 | 2014-04-09 | 一重集团大连设计研究院有限公司 | Novel cold rolling short-process technology and units of novel cold rolling short-process technology |
| CN103722011A (en) * | 2013-12-31 | 2014-04-16 | 一重集团大连设计研究院有限公司 | Novel stainless steel cold continuous rolling technology and unit thereof |
| WO2014177034A1 (en) * | 2013-04-28 | 2014-11-06 | 宝山钢铁股份有限公司 | Combined shearing method and system for steel plate |
| CN104289557A (en) * | 2013-07-16 | 2015-01-21 | 大力神铝业股份有限公司 | Method for controlling aluminum coil to be uncoiled and loosened |
| CN104492835A (en) * | 2014-12-05 | 2015-04-08 | 北京工业大学 | System for cleaning band steel by scale breaking through high-pressure water mixed flow |
| CN104492820A (en) * | 2014-10-27 | 2015-04-08 | 武汉钢铁(集团)公司 | Steering roller control method for guaranteeing steering stability of strip steels on treatment line |
| CN104722577A (en) * | 2013-12-23 | 2015-06-24 | 宝山钢铁股份有限公司 | Continuous rolling production process and process arrangement |
| CN105170647A (en) * | 2015-08-07 | 2015-12-23 | 辽宁科技大学 | Metal plate strip horizontal and vertical rolling method capable of achieving continuous coiling |
| CN105598706A (en) * | 2016-01-19 | 2016-05-25 | 王晓晓 | Steel plate straightening and stamping production line |
| CN106239037A (en) * | 2016-07-29 | 2016-12-21 | 黄冈三德板业有限公司 | The cold rolling hot dip integrated production method of steel plate and steel plate |
| CN106269930A (en) * | 2016-08-29 | 2017-01-04 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of method improving titanium band hot-working surface quality |
| CN107252831A (en) * | 2017-06-01 | 2017-10-17 | 江苏省冶金设计院有限公司 | A kind of parallel type water abrasive material jetting scale removal equipment |
| CN107283324A (en) * | 2017-06-01 | 2017-10-24 | 江苏省冶金设计院有限公司 | A kind of parallel type water abrasive material jetting descaling method |
| CN107630132A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | A kind of method that low-cost high-efficiency produces high grade electrical steel product |
| CN108907610A (en) * | 2018-06-08 | 2018-11-30 | 绍兴焕鑫管业有限公司 | A kind of manufacturing process of circle pull rod |
| CN112756989A (en) * | 2020-12-31 | 2021-05-07 | 浦项(张家港)不锈钢股份有限公司 | Method for enabling welding line of stainless steel multi-coil continuous operation grinding unit to pass through wiper |
| CN113290050A (en) * | 2021-05-21 | 2021-08-24 | 新余钢铁股份有限公司 | Device and method for controlling transverse same-plate difference of non-oriented electrical steel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154881A (en) * | 1996-01-15 | 1997-07-23 | 河北理工学院 | Complete equipment for fully-continuously milling reiforcing bar |
| WO2000037190A1 (en) * | 1998-12-18 | 2000-06-29 | Avesta Sheffield Aktiebolag (Publ) | Method for manufacturing of strips of stainless steel and integrated rolling mill line |
| CN1500572A (en) * | 2002-11-15 | 2004-06-02 | 鞍山科技大学 | Method and device for continuously casting and rolling sheet bars |
| CN1864880A (en) * | 2006-06-20 | 2006-11-22 | 刘复麟 | An acidless descaling process for cold rolled steel strip and manufacturing device thereof |
| CN101745544A (en) * | 2010-01-04 | 2010-06-23 | 湖南华菱涟源钢铁有限公司 | Method for controlling transverse thickness difference of medium-low grade electrical steel |
-
2010
- 2010-12-30 CN CN2010106214735A patent/CN102172835A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154881A (en) * | 1996-01-15 | 1997-07-23 | 河北理工学院 | Complete equipment for fully-continuously milling reiforcing bar |
| WO2000037190A1 (en) * | 1998-12-18 | 2000-06-29 | Avesta Sheffield Aktiebolag (Publ) | Method for manufacturing of strips of stainless steel and integrated rolling mill line |
| CN1500572A (en) * | 2002-11-15 | 2004-06-02 | 鞍山科技大学 | Method and device for continuously casting and rolling sheet bars |
| CN1864880A (en) * | 2006-06-20 | 2006-11-22 | 刘复麟 | An acidless descaling process for cold rolled steel strip and manufacturing device thereof |
| CN101745544A (en) * | 2010-01-04 | 2010-06-23 | 湖南华菱涟源钢铁有限公司 | Method for controlling transverse thickness difference of medium-low grade electrical steel |
Cited By (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029010B (en) * | 2011-09-30 | 2015-12-02 | 宝山钢铁股份有限公司 | A kind of compact production technology of metal plate and belt is arranged |
| CN103029010A (en) * | 2011-09-30 | 2013-04-10 | 宝山钢铁股份有限公司 | Compact type production process arrangement for metal plate strips |
| 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 |
| US20150143862A1 (en) * | 2012-05-25 | 2015-05-28 | Baoshan Iron & Steel Co., Ltd. | Cold state metal plate strip surface treatment system and treatment method of the same |
| CN103418623A (en) * | 2012-05-25 | 2013-12-04 | 宝山钢铁股份有限公司 | Cold-state metal plate strip surface treatment system and method |
| KR101789267B1 (en) * | 2012-05-25 | 2017-10-23 | 바오샨 아이론 앤 스틸 유한공사 | Cold state metal plate strip surface treatment system and treatment method thereof |
| 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 |
| 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 |
| CN102836890A (en) * | 2012-09-29 | 2012-12-26 | 湖南有色重型机器有限责任公司 | Cold-state stainless steel band or plate descaling process |
| US9662723B2 (en) | 2013-04-28 | 2017-05-30 | Baoshan Iron & Steel Co., Ltd. | Method and system for combined shearing of steel plate |
| WO2014177034A1 (en) * | 2013-04-28 | 2014-11-06 | 宝山钢铁股份有限公司 | Combined shearing method and system for steel plate |
| CN103302113A (en) * | 2013-06-19 | 2013-09-18 | 鞍钢集团工程技术有限公司 | Vertical tension roller device |
| CN104289557A (en) * | 2013-07-16 | 2015-01-21 | 大力神铝业股份有限公司 | Method for controlling aluminum coil to be uncoiled and loosened |
| CN103464505B (en) * | 2013-09-06 | 2015-06-17 | 武汉钢铁(集团)公司 | Device and method for producing high-frequency roll welding multilayer composite plate |
| CN103464505A (en) * | 2013-09-06 | 2013-12-25 | 武汉钢铁(集团)公司 | Device and method for producing high-frequency roll welding multilayer composite plate |
| CN103481201A (en) * | 2013-10-16 | 2014-01-01 | 山西太钢不锈钢股份有限公司 | Device and method for continuously descaling on surface of metal plate strip |
| CN104722577A (en) * | 2013-12-23 | 2015-06-24 | 宝山钢铁股份有限公司 | Continuous rolling production process and process arrangement |
| CN103722011A (en) * | 2013-12-31 | 2014-04-16 | 一重集团大连设计研究院有限公司 | Novel stainless steel cold continuous rolling technology and unit thereof |
| CN103706637A (en) * | 2013-12-31 | 2014-04-09 | 一重集团大连设计研究院有限公司 | Novel cold rolling short-process technology and units of novel cold rolling short-process technology |
| CN103706637B (en) * | 2013-12-31 | 2016-08-24 | 一重集团大连设计研究院有限公司 | A kind of cold rolling abbreviated system and unit thereof |
| CN104492820A (en) * | 2014-10-27 | 2015-04-08 | 武汉钢铁(集团)公司 | Steering roller control method for guaranteeing steering stability of strip steels on treatment line |
| CN104492820B (en) * | 2014-10-27 | 2016-08-17 | 武汉钢铁(集团)公司 | Guarantee processes the slewing rollers control method of strip steel stable direction on line |
| CN104492835A (en) * | 2014-12-05 | 2015-04-08 | 北京工业大学 | System for cleaning band steel by scale breaking through high-pressure water mixed flow |
| CN105170647A (en) * | 2015-08-07 | 2015-12-23 | 辽宁科技大学 | Metal plate strip horizontal and vertical rolling method capable of achieving continuous coiling |
| CN105598706A (en) * | 2016-01-19 | 2016-05-25 | 王晓晓 | Steel plate straightening and stamping production line |
| CN107630132A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | A kind of method that low-cost high-efficiency produces high grade electrical steel product |
| CN106239037A (en) * | 2016-07-29 | 2016-12-21 | 黄冈三德板业有限公司 | The cold rolling hot dip integrated production method of steel plate and steel plate |
| CN106239037B (en) * | 2016-07-29 | 2019-02-15 | 黄冈三德板业有限公司 | The cold rolling hot dip integrated production method and steel plate of steel plate |
| CN106269930A (en) * | 2016-08-29 | 2017-01-04 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of method improving titanium band hot-working surface quality |
| CN107283324A (en) * | 2017-06-01 | 2017-10-24 | 江苏省冶金设计院有限公司 | A kind of parallel type water abrasive material jetting descaling method |
| CN107252831A (en) * | 2017-06-01 | 2017-10-17 | 江苏省冶金设计院有限公司 | A kind of parallel type water abrasive material jetting scale removal equipment |
| CN108907610A (en) * | 2018-06-08 | 2018-11-30 | 绍兴焕鑫管业有限公司 | A kind of manufacturing process of circle pull rod |
| CN112756989A (en) * | 2020-12-31 | 2021-05-07 | 浦项(张家港)不锈钢股份有限公司 | Method for enabling welding line of stainless steel multi-coil continuous operation grinding unit to pass through wiper |
| CN113290050A (en) * | 2021-05-21 | 2021-08-24 | 新余钢铁股份有限公司 | Device and method for controlling transverse same-plate difference of non-oriented electrical steel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102172835A (en) | Cold metal plate strip cold continuous rolling production line and production method | |
| KR101053414B1 (en) | Descaling method and removal equipment of hot rolled steel strip | |
| CN104722577A (en) | Continuous rolling production process and process arrangement | |
| CN102744277B (en) | Method for producing cold-rolled stainless steel annealing and pickling brand steel | |
| CN103658177B (en) | A kind of method of short route production high-strength thin strip steel | |
| CN107042239B (en) | Continuous rolling continuous annealing and washing production system capable of switching multi-grade stainless steel strips on line | |
| CN107962074A (en) | A kind of stainless steel cold-rolled plate continuous process system and method | |
| US4188812A (en) | Installation for production of continuously cold rolled sheet metal or strip | |
| CN103706637A (en) | Novel cold rolling short-process technology and units of novel cold rolling short-process technology | |
| CN102925904A (en) | Thermal annealing acid-washing method of stainless steel wide and thick plate coil | |
| CN102836890A (en) | Cold-state stainless steel band or plate descaling process | |
| CN102189135A (en) | System and method for quickly removing oxidized iron sheet from surface of cold-state strip steel | |
| RU2571987C2 (en) | Method of rolling of flat bars and appropriate rolling mill | |
| CN202174408U (en) | Assembly system of processing equipment for titanium and titanium alloy strip coils | |
| TW201811456A (en) | Composite cold rolling line to reduce the rolling thickness required by the second rolling, and produce massive amounts of cold rolled coil with a high yield rate | |
| CN111283005A (en) | Descaling system and descaling method | |
| US9433983B2 (en) | Rolling method for strip and corresponding rolling line | |
| CN102451844A (en) | Mechanical descaling method and device for cold-state band steel | |
| CN209334441U (en) | Medium thin slab continuous casting and rolling unit | |
| CN103418623A (en) | Cold-state metal plate strip surface treatment system and method | |
| CN103029010B (en) | A kind of compact production technology of metal plate and belt is arranged | |
| CN217948225U (en) | Strip processing production line containing secondary rolling process | |
| CN113355496B (en) | On-line solution annealing process for rolling waste heat of stainless steel hot-rolled coil | |
| CN101829680A (en) | Method for lubricating and cooling finish rolling side guide plate | |
| CN212190628U (en) | Descaling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110907 |