EP2838676A1 - Procédé et dispositif de décalaminage d'une bande métallique calaminée - Google Patents

Procédé et dispositif de décalaminage d'une bande métallique calaminée

Info

Publication number
EP2838676A1
EP2838676A1 EP13714641.1A EP13714641A EP2838676A1 EP 2838676 A1 EP2838676 A1 EP 2838676A1 EP 13714641 A EP13714641 A EP 13714641A EP 2838676 A1 EP2838676 A1 EP 2838676A1
Authority
EP
European Patent Office
Prior art keywords
straightening
rollers
roller
strip
deflection
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.)
Withdrawn
Application number
EP13714641.1A
Other languages
German (de)
English (en)
Inventor
Andreas Noe
Jens Hoffmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Original Assignee
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BWG Bergwerk und Walzwerk Maschinenbau GmbH filed Critical BWG Bergwerk und Walzwerk Maschinenbau GmbH
Publication of EP2838676A1 publication Critical patent/EP2838676A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0071—Levelling the rolled product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/45—Scale remover or preventor
    • Y10T29/4517—Rolling deformation or deflection

Definitions

  • the invention relates to a method and apparatus for crushing a scale-coated metal strip, in particular a hot-rolled metal strip having a thickness of more than 1 mm, z. B. 1, 2 mm to 16 mm, wherein the tape is guided by at least two in the strip running direction successively arranged straightening rollers and thereby subjected to a bending change, wherein at least one of the straightening rollers is arranged transversely to the strip running direction.
  • - Metal strip means in the context of the invention, in particular a metal strip made of steel or stainless steel. These can be tapes wound on coils. Metal strip means within the scope of the invention but also sheets or the like band sections.
  • Such methods to Zunder mecanic hot rolled strip by stretch bending strains are z. B. from DE 23 50 503 B1 and DE 29 42 270 A1.
  • stretch bending devices are equipped with inlet side and outlet side tension roller sets.
  • the outlet-side strip tension is usually much higher than the inlet-side strip tension.
  • stretch levels of more than 1% are usually required to achieve efficient crushing and improved straightening results. In terms of plant technology, this requires a relatively high capital outlay, in particular because of the required tensioner roller sets.
  • the Zunderhyroid with stretch bending equipment is also limited to belt treatment lines with endless belt, so that the beginning of the tape or the band end of the coils must be connected to each other.
  • a device for a mechanical descaling of hot strip which is arranged following a decoiler in front of a pickling bath, this device consisting of several bending roll stands, each with a concave shaped and a convex bending roll is equipped, these pairs of bender rollers from Biegerollengerüst switch to bender roller stand according to their role profile, so that the passage profile between the bending rollers once has a curvature up and once a curvature down.
  • Such a device should also be used in push-pickling plants, the transport z. B can be done with the help of drive roller sets.
  • the strip is alternately deformed during the passage, wherein the bend, due to the convex-concave profiles, essentially takes place about an axis which extends along the strip running direction.
  • the bending geometry is predetermined by the roll geometry, so that the system can only be adapted insufficiently to different conditions.
  • DE 10 2009 035 161 A1 discloses a method and a device for descaling metal strips, in which a cryogen (for example liquid nitrogen) is applied to the strip surface in order to dissolve and remove dirt or scale particles. Water is also applied to the belt surface prior to application of the cryogen. During the application of the water or after the application of the water and before the application of the cryogen, the strip can be guided on at least one side over at least one roller, so that the strip is subjected to bending deformation.
  • a cryogen for example liquid nitrogen
  • a device for straightening metal strip with guide rollers arranged parallel to one another and a straightening roller arranged in the gusset of two guide rollers, in which the band wraps around the straightening roller between two lines of contact, along which the guide rollers over the belt in indirect contact with the straightening roller stand.
  • the straightening is done by bending shape change, so that the strip tension does not need straightening work, but only serves to move the tape.
  • the necessary pulling force remains far below that required for stretching and bending the tape in the stretch bend straightening.
  • the guide rollers in each case form a straightening gap with the straightening roller and thereby take the distance, determined by the strip thickness, from the straightening roller
  • the invention has for its object to provide a method which allows a reduced and technical Zunder réelle with reduced investment (investment effort a perfect and economical.
  • the invention teaches in a generic method for crushing a scale-coated metal strip, in particular a hot-rolled metal strip, that the tape is zuglos press upstream of the straightening rolls or under a low tensile stress of less than 10% of the yield strength of the tape and / or less than 25 MPa and that the diameter of the straightening rollers and their spacing in the direction of tape travel and their adjustment transversely to the strip running direction, taking into account the band properties (and the tensile stress) are chosen so that in the course of a first plastic bending (on the first straightening roller) and a second plastic Bending (on the second straightening roller) on the upper side of the tape and the lower side of the belt strains and compressions of at least 2%, preferably at least 3% are generated.
  • the invention is based on the recognition that even without a degree of stretching and thus without plastic stretching of the belt a perfect Zunderêt is possible if by tensionless alternating bending, the strains or compressions on the upper side of the tape and the lower side of the belt are sufficiently large. On a plastic overall extension of the band, which occurs in the stretch bend densities is omitted. Nevertheless, the pickling attack of the acid or the effect of mechanical Entzu matterssvon such as brushing or blasting can be significantly increased even without degree of stretching.
  • the band is plastically bent at least once in one direction and once in the other direction, so that the upper side of the band and the underside of the band are both plastically stretched and plastically compressed.
  • Straightening rollers are possible, so that accumulation or caking of the scale on the straightening rollers and associated surface damage on the belt are avoided. Because of the two-sided contact of the strip to the straightening roller and possibly to a deflection roller, which would lead to surface damage when the belt is affixed to the form-fit bending, is avoided.
  • the first straightening roller is preceded by a deflection roller (or a further straightening roller).
  • the second straightening roller is preferably arranged downstream of a deflection roller (or a further straightening roller).
  • each straightening roller can be arranged either upstream of a deflection roller or downstream of a deflection roller, whereby these (additional) deflection rollers can also be replaced by (additional) straightening rollers.
  • One or more pulleys (or additional straightening rollers) may also be adjustable transversely to the direction of belt travel.
  • either the straightening roller can be adjusted relative to one or more (fixed) deflection rollers or the deflection roller can be adjusted relative to a (fixed) straightening roller.
  • both the straightening rollers and the deflection rollers can be adjusted.
  • there is a very compact arrangement of the straightening rollers and pulleys so that the desired strains or compressions are generated on the upper side of the belt or lower side of the belt. Due to the close arrangement of the straightening rollers and the deflection rollers, a marginal fiber elongation / compression of more than 2%, preferably more than 3%, is also enforced in the draft-free passage or at low tension in the belt.
  • Edge fiber strain / compression means strain / compression on the upper side of the belt or lower side of the belt.
  • the tape can adopt a tension-free state on the straightening rollers a maximum circle diameter which corresponds to a maximum of three times the straightening roller diameter, preferably twice the straightening roller diameter.
  • the straightening rollers and pulleys are thus arranged so close to each other and employed with such a depth that even at Switzerlandlosem band maximum a circle diameter of the belt can set, which can not exceed a maximum value of the triple Richtrolleen pressmessers, preferably even only twice the Richtrolleen preparers.
  • the bending line of the strip which adjusts itself by the bending moments and the optionally (slight) tensile stress, then yields a bending radius which corresponds to the straightening roller radius for thinner strips.
  • the straightening roller diameter is chosen so small that even at the lowest strip thickness a (surface) elongation of more than 2%, preferably more than 3%, is achieved.
  • the straightening rollers have a diameter which has a maximum of fifty times the smallest strip thickness to be processed in the system.
  • the bending radius is adjusted by the employment of the straightening rollers and optionally deflection rollers so that the maximum marginal fiber elongation or surface elongation of more than 3% results.
  • the invention proposes that a strip tension is produced on the outlet side and consequently behind the straightening rollers, which exceeds the entry-side strip tension at least by the extent of the forming losses. Consequently, at the outlet side, the strip is under a strip tensile stress which is sufficient to cover all forming losses occurring in the device in conjunction with any deflection roller drives.
  • the outlet-side strip tension is generated by the take-up of a take-up reel.
  • the forming losses can become so great that the strip tension required on the outlet side exceeds the available (eg take-up tension). In this case, then the Richtrollenanha is limited or reduced.
  • the inventive device can also be in lines without endless belt, z. B. in Schubbeizlinien, use. Such lines are mainly used for large tape thicknesses, z. B. to 16 mm used.
  • the beginning of the tape is usually driven by the uncoiler via an inlet-side drive unit through the pickling section to the take-up reel.
  • the adjustable straightening rollers and optionally deflection rollers
  • the adjustable straightening rollers are turned off, so that the beginning of the tape can be easily driven between the rollers.
  • At least one further discharge-side drive unit can alternatively be arranged downstream of the scale-breaking device on the outlet side, with which the required strip tension can be generated.
  • the (outgoing) drive unit it is closed and the belt tension is built up.
  • the additional discharge-side drive unit it is possible to minimize the non-descaled belt length. The same applies to the end of the tape, which runs through the scale breaking device. From a certain number of turns on the take-up reel, the unwinding train can be used.
  • a drive unit can be provided on the inlet side, which generates the inlet-side strip tension for the passage of the strip, so that the end of the strip, with the exception of the strip length from the inlet-side drive unit is optionally vorentzundert to the straightening rollers.
  • the last straightening roller (or the last deflection roller) is followed by an adjustable bending roller with which a residual curvature correction takes place.
  • the invention is based on the recognition that a plastic residual curvature is generated by the strong plastic bending around the straightening rollers in the band. This is eliminated or minimized by the employment of at least one engagable bending roller.
  • the band is thus bent against the straightening rollers with at least one bending roller after plastic bending so that no or only a small residual plastic curvature remains in the band.
  • the bending roller preferably has a diameter which is dimensioned such that even the smallest strip thickness can be bent beyond the elastic limit.
  • the bending roller can be driven. It is within the scope of the invention that the broken on the straightening rollers scoured suction or washed away with a (liquid or gaseous) medium or blown away. In this way, accumulations and
  • the straightening rollers have a relatively small diameter.
  • the straightening rollers have a diameter which is less than fifty times the smallest strip thickness to be processed. So it may be appropriate to use straightening rollers with a diameter of less than 100 mm.
  • the invention preferably proposes that the straightening rollers or each straightening roller are each assigned at least two own or two separate support rollers. The individual straightening rollers are therefore each supported individually, so that each support roller is assigned to only a single straightening roller.
  • the deflection rollers preferably have a diameter of 150 mm to 600 mm, particularly preferably 200 mm to 300 mm. With such diameters can create deflection rollers, on the one hand can absorb sufficiently high forces and on the other hand allow the invention essential tight geometry of the arrangement.
  • the invention is not only the method described, but also an apparatus for performing this method.
  • a device has at least a first straightening roller and a second straightening roller.
  • the first straightening roller is arranged upstream of at least one deflection roller and the second straightening roller is arranged downstream of at least one deflection roller.
  • each straightening roller may each be preceded by a deflection roller and may be arranged downstream of a deflection roller.
  • the device also has an unwinding reel on the inlet side and a take-up reel on the outgoing side, wherein the rewinding reel is generally not arranged directly behind the scale-breaking device but behind the descaling or pickling section.
  • the scale breaking device is therefore arranged downstream of a descaling device, said descaling z. B. may be formed as a pickling device. Alternatively, however, other Entzu matterssvoriquesen come used, for. B. blasting devices. According to another proposal, it is provided that the last straightening roller (or deflection roller) is followed by a downstream drive unit. Alternatively or additionally, the first straightening roller (or deflection roller) may be preceded by an inlet-side drive unit.
  • the optimal Rollan ein is precalculated using a mathematical model, which as a parameter at least the strip thickness, bandwidth, the yield strength , the modulus of elasticity, the roll diameter and the roll geometry, the inlet-side strip tensile stress and the forming bending losses that occur.
  • a first straightening roller and a second straightening roller that is, a straightening roller pair is provided for the desired band thickness range, wherein the straightening rollers can be arranged directly behind one another in the strip running direction or wherein each straightening roller is assigned in each case two deflection rollers.
  • two straightening roller pairs or more than two straightening roller pairs can be provided, wherein the straightening rollers of the first straightening roller pair have a different diameter than the straightening rollers of the second straightening roller pair. This then makes it possible to use each of these straightening roller pairs for a certain band thickness range, so that the Zunderêt can be optimized.
  • a first pair of straightening rollers which has straightening rollers with a straightening roller diameter which is smaller than the straightening roller diameter of the straightening rollers of a second straightening roller pair.
  • the first pair of straightening rollers is then used for breakage on thinner belts, while the second pair of straightening rollers with a larger straightening roller diameter is used for the crushing of thicker belts.
  • the respective support rollers have a smaller or a larger diameter.
  • the bending effect can be increased with smaller straightening roll diameters for thinner tapes. For the bending forces that occur with thick bands, but the additional loads of the support rollers are exceeded. Therefore, it is advantageous for thick tapes to use a second pair of straightening rollers with larger diameters.
  • the scale breaking device according to the invention can be in lines without endless belt, z. B. Schubbeizlinien use.
  • the scale breaking device according to the invention can also be used in lines with endless belt as a cost-effective variant in comparison to a stretch bending machine.
  • FIG. 1 shows an apparatus for descaling hot-rolled strips with a
  • Figure 3 shows the article of Figure 2 in a modified
  • FIG. 4 shows the article according to FIG. 2 in a further embodiment.
  • FIG. 1 shows a device for descaling hot-rolled strips 1, wherein the strip 1 is unwound from a unwinding reel 2 and wound onto a reeling reel 5.
  • the descaling takes place in a (mechanical) scale breaking device 3, in which the scale is broken on the surface of the strip in order to ensure a better acid attack in the downstream descaling or pickling section 4.
  • the subject matter of the present invention is in particular the scale breaking device 3 only indicated in FIG. 1. In FIGS. 2 to 4, this scale breaking device 3 is shown in various embodiments.
  • the scale breaking device 3 has at least one pair of straightening rollers P with two straightening rollers 6, 7 arranged one behind the other in the direction of travel of the strip, wherein the metal band 1 is guided around these straightening rollers 6, 7 and undergoes alternating bending.
  • the first straightening roller 6 is preceded by a guide roller 8 and the second straightening roller 7 is followed by a guide roller 9.
  • the (upper) straightening roller 6 and the (upper) guide roller 9 are arranged transversely to the strip running direction, while the (lower) straightening roller 7 and the (lower) guide roller 8 can be arranged stationary.
  • the straightening rollers 6, 7 are each supported by support rollers 12.
  • Each straightening roller are each assigned two support rollers, each support roller being assigned to only one straightening roller.
  • the adjustability of the rollers transversely to the direction of tape travel is indicated by double arrows.
  • the Zunder sermon carried out by way of bending, that is by bending around the straightening rollers 6, 7, wherein the band 1 on the inlet side, that is zuglos before the straightening rollers 6, 7 and pulleys 8, 9 or one
  • the straightening rollers and their spacing in the strip running direction to each other and the distance to the respective straightening rollers and the employment of the straightening rollers and pulleys is chosen so that in the course of a first plastic bending around the straightening roller 6 and a second plastic Bending around the straightening roller 7 on the upper side of the tape and the lower side of the belt strains and compressions of at least 2%, preferably at least 3% are generated.
  • scale is broken down by tensionless alternating bending, that is to say, in contrast to the stretch bending direction, a total plastic extension (degree of stretching) is dispensed with. Nevertheless, an efficient break-up of the scale takes place, so that the pickling attack of the acid or the effect of the downstream mechanical descaling methods such as brushing or blasting without a degree of stretching is markedly increased.
  • This is inventively achieved by the close arrangement of the straightening rollers 6, 7 to each other or the straightening rollers 6, 7 to the guide rollers 8, 9, taking into account the respective roller diameter.
  • the outlet-side straightening roller 7 or its deflection roller 9 is arranged downstream of a bending roller 11 in the exemplary embodiment, with which a residual curvature correction takes place.
  • a further guide roller 10 is provided on the opposite side of the belt.
  • a propulsion unit 13 is provided on the inlet side and a propulsion unit 14 is provided on the outlet side.
  • a Schubbeizline there is the possibility to drive the beginning of a coil coil through the scale breaker 3, wherein initially the engagable straightening rollers and pulleys are parked.
  • the beginning of the strip can in principle be advanced to the take-up reel 5, through which the outlet-side required strip tension is then generated. Only then are the straightening rollers 6 and deflection rollers 9 employed. In this case, the tape length would not vorentzundert to Aufwickelhaspel 5 back to the scale breaker 3.
  • the drive unit 14 which is arranged directly downstream of the scale-breaking device on the outlet side, it is possible to minimize the strip length which is not descaled. Because with the help of this propulsion unit 14, the required strip tension can be generated. Once the beginning of the tape has passed the propulsion unit 14, this is closed and built the tape tension. The same applies to the band end of a coil which runs through the scale breaking device 3. As soon as the take-off tension on a take-off reel starts from a certain residual turn number and thus the tension in the belt acting on the inlet side
  • the drive unit 13 is installed on the inlet side, which generates the inlet side strip tension for the passage of the belt 1, so that the end of the tape is optimally pre-descaled up to the straightening rollers with the exception of the tape length from the inlet-mounted drive unit 13.
  • FIG. 3 shows a modified embodiment of the invention, in which also a first straightening roller 6 and a second straightening roller 7 are provided for the alternating bending. While, according to FIG. 2, the first straightening roller 6 is preceded only by a deflection roller 8 and the second straightening roller 7 is only followed by a deflection roller 9, FIG. 3 shows an embodiment in which each straightening roller 6 or 7 has two deflection rollers 8, 8 'and 9, respectively. 9 'are assigned.
  • the two straightening rollers 6, 7 are adjustable while the deflection rollers 8, 8 'or 9, 9' can be arranged in a stationary manner. Adjustability is again indicated by double arrows.
  • FIG. 4 shows a further option of the invention.
  • the first pair of straightening rollers P has straightening rollers 6, 7 with a small diameter of z. B. 50 mm to 60 mm, while the second straightening roller pair P 'straightening rollers 6, 7 with a larger diameter of z. B. 70 mm to 80 mm.
  • the first pair of straightening rollers P has straightening rollers 6, 7 with a small diameter of z. B. 50 mm to 60 mm
  • the second straightening roller pair P 'straightening rollers 6, 7 with a larger diameter of z. B. 70 mm to 80 mm.
  • Diameter of the pulleys can z. B. 250 mm. Consequently, a particularly large band thickness range can be covered with the scale breaker device according to FIG. 4, since the straightening roller pairs P and P 'are to be used at different strip thicknesses.
  • the straightening roller pair P ' can be used with larger straightening rollers and support rollers. Because with smaller straightening roll diameters, the bending effect can be increased with thinner tapes. For bending forces, which occur with thick belts, but the additional loads of the support rollers are exceeded, so that offers for thick belts, to use a second pair of straightening rollers with larger diameters.
  • both pairs of straightening rollers P and P ' it may also be useful to use both pairs of straightening rollers P and P ', specifically when the bending radii that are present in the intake-side tensionless belt or at very low inlet-side tensile stresses are still too great for effective descaling. Due to the forming losses that occur when bending around the first pair of straightening rollers P, the strip tension in the band increases after the first straightening roller pair P and thus the inlet-side strip tension for the second straightening roller pair P '. As a result, for bands in which the bending radius is greater than the roll diameter, smaller bending radii, that is, the marginal fiber strain and compression increases and thus also the scale breaker.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)

Abstract

L'invention concerne un procédé de décalaminage d'une bande métallique calaminée, en particulier d'une bande métallique laminée à chaud ayant une épaisseur de plus de 1 mm, par exemple de 1,2 mm à 16 mm. La bande passe autour d'au moins deux rouleaux à dresser, disposés l'un à la suite de l'autre dans le sens d'avance de la bande, où elle est soumise à une flexion alternée, l'un au moins des rouleaux à dresser pouvant être ajusté transversalement au sens d'avance de la bande. Ce procédé est caractérisé en ce que la bande, avant d'entrer dans les rouleaux, n'est soumise à aucune traction ou seulement à une faible traction, inférieure à 10% de la limite d'allongement de la bande, et en ce que le diamètre des rouleaux à dresser, leur écartement dans le sens d'avance de la bande et leur ajustement transversalement au sens d'avance sont choisis en fonction des propriétés de la bande de façon à générer lors d'une première flexion plastique et d'une seconde flexion plastique sur le dessus et sur le dessous de la bande des dilatations et des refoulements de décalaminage d'une valeur au moins égale à 2%, de préférence au moins égale à 3%.
EP13714641.1A 2012-04-18 2013-04-04 Procédé et dispositif de décalaminage d'une bande métallique calaminée Withdrawn EP2838676A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012103366A DE102012103366A1 (de) 2012-04-18 2012-04-18 Verfahren und Vorrichtung zum Zunderbrechen eines zunderbehafteten Metallbandes
PCT/EP2013/057128 WO2013156316A1 (fr) 2012-04-18 2013-04-04 Procédé et dispositif de décalaminage d'une bande métallique calaminée

Publications (1)

Publication Number Publication Date
EP2838676A1 true EP2838676A1 (fr) 2015-02-25

Family

ID=48050021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13714641.1A Withdrawn EP2838676A1 (fr) 2012-04-18 2013-04-04 Procédé et dispositif de décalaminage d'une bande métallique calaminée

Country Status (5)

Country Link
US (1) US20150052717A1 (fr)
EP (1) EP2838676A1 (fr)
CN (1) CN104245171A (fr)
DE (1) DE102012103366A1 (fr)
WO (1) WO2013156316A1 (fr)

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CN109500106A (zh) * 2018-12-28 2019-03-22 北京京诚之星科技开发有限公司 一种破鳞拉矫机

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DE102014101159B4 (de) * 2014-01-30 2016-12-01 Thyssenkrupp Steel Europe Ag Verfahren zur Oberflächenbehandlung von Werkstücken
KR20160123276A (ko) * 2014-02-27 2016-10-25 이반 티모페예비치 토츠키 냉간 압연을 위한 열간 압연된 반가공의 강재 압연 스톡을 준비하기 위한 방법
CN104475448B (zh) * 2014-10-22 2016-08-24 山东钢铁股份有限公司 一种预防极薄钢卷“塌芯”缺陷的生产工艺
CN111283005A (zh) * 2020-03-30 2020-06-16 杭州金固环保设备科技有限公司 除鳞系统和除鳞方法
CN111729881A (zh) * 2020-07-23 2020-10-02 浙江亚磊型钢冷拔有限公司 一种型钢冷弯成型进料装置
CN114769365B (zh) * 2022-04-22 2023-10-20 浙江福达合金材料科技有限公司 一种复合带材侧弯矫直的设备
CN115555416A (zh) * 2022-10-19 2023-01-03 山东钢铁集团日照有限公司 一种2030mm酸轧联合机组拉矫破鳞机

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