EP3575008B1 - Procédé permettant d'éviter le collage de bande à un matériau en bande laminé flexible - Google Patents

Procédé permettant d'éviter le collage de bande à un matériau en bande laminé flexible Download PDF

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Publication number
EP3575008B1
EP3575008B1 EP18175239.5A EP18175239A EP3575008B1 EP 3575008 B1 EP3575008 B1 EP 3575008B1 EP 18175239 A EP18175239 A EP 18175239A EP 3575008 B1 EP3575008 B1 EP 3575008B1
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EP
European Patent Office
Prior art keywords
metal strip
coil
strip
wound
thickness
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Application number
EP18175239.5A
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German (de)
English (en)
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EP3575008A1 (fr
Inventor
Jürgen Butzkamm
Alexander EICK
Christian Reuter
Sven SCHARZ
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Muhr und Bender KG
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Muhr und Bender KG
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Priority to EP18175239.5A priority Critical patent/EP3575008B1/fr
Priority to PCT/EP2019/063658 priority patent/WO2019228985A1/fr
Priority to CN201980035936.9A priority patent/CN112203783A/zh
Publication of EP3575008A1 publication Critical patent/EP3575008A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/003—Regulation of tension or speed; Braking
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/663—Bell-type furnaces
    • C21D9/667—Multi-station furnaces
    • C21D9/67—Multi-station furnaces adapted for treating the charge in vacuum or special atmosphere

Definitions

  • the invention relates to a method for avoiding strip adhesives, in particular from flexibly rolled metal strip.
  • the present invention is therefore based on the object of proposing a method with which the occurrence of strip adhesives, in particular also of flexibly rolled metal strip, can be effectively reduced or avoided.
  • One solution lies in a method for avoiding tape sticking on flexibly rolled metal strip, the metal strip being wound up into a coil after flexible rolling and being subjected to a heat treatment, the flexibly rolled metal strip being, before the heat treatment, at least in a radially outer section of the coil, which extends over a radially outer third of the coil, is wound up with a winding tension of less than 40 N/mm 2 based on a cross-sectional area of the metal strip.
  • At least one outer section of the coil for example at least one outer third, in particular at least one outer half, preferably the entire coil, is wound with less than 40 N/mm 2 .
  • the winding tension is adjusted as a function of an average thickness of the metal strip over its length.
  • the average thickness of the strip or strip sections can be arbitrary.
  • the mean value can be determined based on the geometric mean value of the thickness profile over the length of the strip material or one or more strip sections.
  • the mean value can also be determined as the absolute mean value between a maximum thickness and a minimum thickness of a strip section or a total length of the strip.
  • the mean value can be multiplied by a number corresponding to the bond strength of the strip.
  • a mean cross-sectional area can be calculated from the mean value of the strip thickness multiplied by the strip width, which can be used to determine the winding tension over the length of the strip material.
  • strip material with a substantially uniform sheet thickness is rolled out to strip material with variable sheet thickness over the length by changing the roll gap during the process.
  • the sections of different thickness produced by the flexible rolling extend transversely to the longitudinal direction or to the rolling direction of the strip material.
  • the flexible rolling can be carried out, for example, in such a way that a first section has a thinner first thickness than a thicker second section, the ratio of the first thickness to the second thickness being less than 0.8, in particular less than 0.7, in particular less than 0. 6 can be.
  • the absolute thickness of the strip material can be, for example, between 0.7 mm in thin areas and 4.0 mm in thick areas.
  • the strip material can be wound up in the manner mentioned with low strip tensions immediately after the flexible rolling, that is to say from the coiling of the rolling plant.
  • the strip material is initially wound up with higher strip tensions after the flexible rolling, and is then wound up with the mentioned low tension forces in a separate winding process before it is subsequently annealed.
  • the strip material can be made of any desired metal or metal alloy, for example metals containing iron, in particular steel, or light metals, in particular aluminum, magnesium or alloys containing light metals.
  • Hot-rolled strip or cold-rolled strip can be used as steel, whereby these terms are to be understood in the sense of technical terminology for different strip width ranges.
  • Hot strip is a finished rolled steel product (steel strip) that is produced by rolling after prior heating.
  • Cold strip means a cold-rolled steel strip (flat steel).
  • Flat steel is referred to as cold-rolled if the last reduction in thickness is carried out by rolling without prior heating.
  • IF Interstitial Free
  • dual phase steels dual phase steels
  • multiphase steels multiphase steels
  • TRIP Traansformation Induced Plasticity
  • microalloyed steels can be used.
  • a band material with a width of at least 400 mm, in particular at least 500 mm is used. Due to relatively large strip widths, the contact surface of the strip layers lying on top of one another is relatively large in relation to the overall width. The wider the strip material, the greater the load-bearing parts when the winding pulls are applied. From this it follows that the absolute surface pressure between the tape layers lying on top of one another is reduced, which also contributes to a reduction in tape sticking.
  • the metal strip provided for flexible rolling can have a maximum width of up to 2500 mm, in particular up to 1300 mm, without being restricted to this.
  • the coil of wound strip material can have an outside diameter of less than 2500 mm, in particular less than 2200 mm.
  • the outside diameter is preferably greater than 1500 mm.
  • the inside diameter of the coil can be greater than 500 mm and/or smaller than 700 mm, for example.
  • variable winding tension means that the coil is wound up at least in a first coil section with a different winding force than in a second coil section spaced apart radially or in the circumferential direction.
  • the metal strip can, for example, be divided into length sections, or the coil into ring sections, which are wound in stages with different tensile forces. Alternatively, it is also possible to wind the coil continuously with changing tensile forces as a function of the length of the strip, or the diameter of the coil that increases during winding, for example as a linear function.
  • the flexibly rolled metal strip is preferably wound up in a radially inner section of the coil with a greater winding tension than in a radially outer section.
  • the inboard section may be a sub-section within an inner third of the coil, or it may extend throughout the inner third of the coil.
  • the inner third of the coil means the ring section between the inner diameter and an intermediate diameter of the coil, the intermediate diameter being one third of the difference between the outer diameter and the inner diameter.
  • the section lying radially on the outside can be a section within an outer third of the coil, or can extend over the entire outer third of the coil.
  • the outer third of the coil means the ring section between the outer diameter and an intermediate diameter of the coil, the intermediate diameter being two thirds of the difference between the outer diameter and the inner diameter.
  • the winding tension can be adjusted depending on the sheet thickness and the strength of the material.
  • the metal strip in the radially inner section, can have a winding tension of at least 5 N/mm 2 , in particular at least 10 N/mm 2 , optionally also at least 15 N/mm 2 and/or up to 40 N/mm 2 , in particular up to 35 N/mm 2 , optionally up to 30 N/mm 2 , based in each case on the cross section of the strip material.
  • the winding tension in the outer section of the coil can be at least 10%, in particular at least 20%, and depending on the material at least 30% less than the winding tension in the inner coil section.
  • the winding tensile forces can be all the greater, the thicker the strip material and the higher the strength of the strip material.
  • the winding tensile force can be, for example, between 20 and 30 N/mm 2 radially on the inside and between 10 and 25 N/mm 2 radially on the outside.
  • the winding tensile force can be, for example, between 10 and 25 N/mm 2 radially on the inside and between 5 and 15 N/mm 2 radially on the outside.
  • a lubricant in particular oil
  • the amount of lubricant applied is in particular at least 0.5 g/m 2 and/or up to 3 g/m 2 , based in each case on the surface of the strip material.
  • the strip material experiences an increase in hardness, which is also referred to as the as-rolled condition.
  • a micro-alloyed fine-grain structural steel with the designation S550MC as raw material has a yield strength of 550 MPa and a tensile strength of 620 MPa. After rolling, the tensile strength can be over 900 MPa.
  • the strip material that has been rolled and wound into a coil is annealed in a bell annealing furnace. As a result, recrystallization annealing takes place, during which the hardness is reduced again and formability is restored.
  • a heat treatment of the coil in a bell annealer comprises the phases of heating, holding and cooling.
  • the coil is heated in a temperature range of 100°C to 600°C with an average heating rate of at least 0.50°C/min and/or a maximum of 1.8°C /min is heated, in particular at an average heating rate of 0.80 ° C / min to 1.40 ° C / min.
  • the coil is cooled at a cooling rate of less than 0.35° C./min, at least in a first temperature range after leaving the holding time.
  • the temperatures given relate in particular to the temperatures measured on the control element of the furnace.
  • a protective gas can be introduced into the bell annealer.
  • the average quantity of protective gas during the heating-up time in a temperature range from 200°C to 600°C is a maximum of 0.5 m3 /h per tonne of strip material in the furnace, in particular a maximum of 0.25 m3 /H. If the furnace is filled with coils with a total weight of 40 tons, this results in an amount of protective gas of at most 20 m 3 /h, in particular at most 10 m 3 /h, based on the total weight.
  • figure 1 shows a method according to the invention for avoiding tape sticking of rolled strip material, in particular of flexibly rolled strip material 2.
  • the strip material 2 which is also generally referred to as a substrate and is wound up on a coil 3 in the initial state, is rolled, preferably using flexible rolling.
  • the strip material 2, which before flexible rolling has a largely constant sheet thickness along its length, is rolled by means of rollers 4, 4' in such a way that it has a variable sheet thickness d2 along the rolling direction.
  • the work rolls 4, 4' are supported by backup rolls 5, 5'.
  • the process is monitored and controlled during rolling, the data determined by a sheet thickness measurement 6 being used as an input signal for controlling the rolls 4, 4'.
  • the strip material 2 After the flexible rolling, the strip material 2 has different thicknesses in the rolling direction.
  • the strip material can be rolled out, starting from the substrate with a uniform thickness, with rolling rates of 3% to over 40%, in particular also over 50% in sections.
  • the initial thickness of the substrate can be, for example, between 0.7 mm and 4.0 mm, without being limited to this.
  • the flexibly rolled material has correspondingly thicker and thinner strip sections with reduced thickness, which are produced according to a specified nominal thickness profile.
  • the substrate can be made of any rollable metal or metal alloy, for example metals containing iron, in particular steel, or light metals, in particular aluminum, magnesium or alloys containing light metals.
  • the strip material 2 can, for example, have a width B2 of at least 400 mm, in particular at least 500 mm. Due to relatively large strip widths, the contact surface 14, 15 of the strip layers lying one on top of the other is relatively large in relation to the overall width B2, as in particular in figure 6 recognizable.
  • the metal strip used for flexible rolling can have a maximum width B2 of up to 2500 mm, in particular of up to 1300 mm, without being restricted to this.
  • the length L2 of the strip material then results from the predetermined diameter D3 of the strip 2 wound into the coil 3 and the thickness profile d2 over the length L2 of the tape. With an average thickness of 1.5 mm, the strip material can have a length of about 2000 m, for example.
  • the coil 3 of wound strip material 2 can, for example, have an outside diameter D30 of approximately 2000 mm.
  • the inside diameter D3i of the coil 3 can be greater than 500 mm and/or smaller than 700 mm, for example.
  • a lubricant 22 preferably oil or an oil-containing agent, can optionally be applied to the flexibly rolled metal strip 2 in a step S20 by means of a corresponding application device 21 .
  • the amount of oil applied is in particular between 0.5 g/m 2 and 3 g/m 2 , in each case based on the surface 23 of the strip material 2.
  • the lubricant can be sprayed onto the strip material 2 in the form of a spray.
  • the metal strip 2 is wound up at least in a radially outer section 13 of the coil 3 with a winding tension F13 of less than 40 N/mm 2 based on a cross-sectional area A2 of the metal strip 2.
  • the flexibly rolled metal strip 2 can be wound up over the length L2 of the metal strip 2 with different winding tensions.
  • the metal strip 2 can be wound up in a radially inner section 11 with greater tension F11, which can be, for example, at least 10% greater than the winding tension F13 of the radially outer section 13.
  • the inner section 11 which can also be referred to as the core, is an inner third of the coil 3 in this embodiment.
  • the middle section 12 and the outer section 13 of the coil 3 are preferably wound up with smaller winding tensions F12, F13.
  • the outer ring section 13 can be wound up, for example, with a tensile force F13 of 20 to 30 N/mm 2 based on the average cross-sectional area.
  • the winding tension F12 for the middle ring section 12 of the coil 3, which extends between the diameters D11 and D13, can be identical to the winding tension F13 for the outer coil section 13 or can be selected in size between the inner winding tension F11 and the outer winding tension F13.
  • the winding tensile force radially on the inside can be less than 25 N/mm 2 , in particular between 10 and 20 N/mm 2 , and radially on the outside less than 15 N/mm 2 . in particular 5 and 10 N/mm 2 .
  • the winding tension can be adjusted depending on an average thickness dm of the metal strip 2 over the length L2.
  • the average thickness dm of the strip or strip sections can be calculated, for example, based on the geometric mean of the thickness profile d2 over the length L2 of the strip material or strip sections, or as an absolute mean value between a maximum thickness and a minimum thickness of the strip section considered and/or or the total length of the tape can be determined.
  • figure 7 shows an exemplary thickness profile of a strip section or a blank 7 separated from it. It can be seen that the blank 7 has a variable thickness profile D7 over the length L7 of the blank, it being understood that the thickness profile of the strip or the blanks to be produced from it also every any other regular or irregular, symmetric or asymmetric shape.
  • the average thickness dm of the strip section 2 for producing the present circuit board 7 can be determined, for example, by the mean value between the greatest thickness d8b and the smallest thickness d8.
  • the thickness value dm and in particular the width B2 of the strip section or strip are then used to determine the strip tensile forces F for winding, the calculated mean value dm being able to be multiplied by a characteristic number of the material corresponding to the strip hardening.
  • the wound coil 30 is subjected to a heat treatment in method step S40 in order to soften the material that has been brought into a hard-as-rolled state by the rolling.
  • This form of heat treatment is also referred to as recrystallization annealing.
  • the heat treatment takes place in a bell-type annealing furnace 41, without being restricted to this.
  • FIG. 8 and 9 an exemplary heating curve during the heat treatment S40 of the strip material 2 wound into the coil 3 is shown. It can be seen that the phases heating up S42, holding S43 and cooling down S44 are run through.
  • the average heating rate R42 during heating S42 in a temperature range from 100° C. to 600° C. for steel materials is preferably between 0.50° C./min and 1.8° C./min, in particular between 0.80° C./min and 1.40°C/min. Provision can also be made for the material to be cooled in a first temperature range T44 after exiting the holding time S43 at a cooling rate R44 of less than 0.35° C./min.
  • the specified temperatures relate in particular to the temperatures prevailing in the oven according to the control element.
  • a protective gas can be introduced into the hood furnace 41 during the heat treatment S40, in particular during the heating-up.
  • the average amount of protective gas G42 during the heating-up phase S42 here for example between about 2.0 and 8.0 hours, is a maximum of 20 m 3 /h in a temperature range from 200° C. to 600° C., in particular maximum 10m 3 /h.
  • the quantities of protective gas G42 referred to relate to the total tonnage of the coils in the furnace, which can be between 40 and 60 tons of strip material.
  • the strip material 2 is unwound from the coil 30 in the next method step S50 by means of an unwinding device 50 and fed to further processing, in this case a separation S60 of the strip material 2 into individual sheet metal blanks 7.
  • the strip material 2 is separated into sheet metal blanks 7, for example by means of a Punching or cutting tool 61. Depending on the shape of the sheet metal blanks 7 to be produced, these can be punched out of the strip material 2 as a shaped cut, leaving an edge on the strip material that is not used further, or the strip material 2 can simply be cut into sections.
  • the blank 7 is formed into the desired end product in method step S70.
  • the forming takes place in a suitable forming tool 71, in particular by means of cold forming, with hot forming also being possible.
  • the figure 2 shows a method according to the invention for avoiding strip adhesives, or for producing a product from a strip material 2 in a modified process control. This largely corresponds to the procedure figure 1 , so that reference is made to the description above with regard to the similarities. The same or modified details are provided with the same reference symbols as in FIG figure 1 .
  • the strip material 2 is wound up in the manner mentioned with low strip tensions immediately after the flexible rolling S10, that is to say from the coiler 31 of the rolling mill.
  • flexible rolling and winding with low strip tensions take place in the same system.
  • the strip material 2 is in accordance with the method figure 2 after the flexible rolling S10 in a separate step S30 with the low winding tensions of less than 40 N/mm 2 based on the cross-sectional area, it being possible for the winding to be optionally preceded by spraying with lubricant 22 in step S20.
  • This process is also referred to as the wrapping process.
  • This is followed by the heat treatment S40, as described above, which can be followed by the separating S50 and forming S60.
  • the above-mentioned methods according to the invention or the coils 3 wound up according to the invention have the advantage that the stresses acting in the circumferential direction are relatively low, so that the strip surfaces lying on top of one another in the coil are pressed together less strongly.
  • the special heat treatment can also have a beneficial effect on the stresses acting in the circumferential direction, so that tape adhesive is avoided when the coil is unwound again.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Claims (15)

  1. Procédé pour éviter l'adhérence d'une bande métallique laminée de manière flexible,
    dans lequel une bande métallique (2) est enroulée en un coil (3) après le laminage flexible (S10) et est soumise à un traitement thermique (S40),
    caractérisé en ce que la bande métallique laminée de manière flexible (2) est enroulée avant le traitement thermique (S40) au moins dans une partie annulaire (13) radialement extérieure du coil (3), qui s'étend sur un tiers radialement extérieur du coil (3), avec une traction d'enroulement (F13) de moins de 40 N/mm2 en référence à une surface de section transversale (A2) de la bande métallique (2).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    la bande métallique laminée flexible (2) est bobinée avec une traction de bobinage variable (F11, F12, F13) sur la longueur (L2) de la bande métallique.
  3. Procédé selon les revendications 1 ou 2,
    caractérisé en ce que
    la traction d'enroulement (F11, F12, F13) de la bande métallique laminée de manière flexible est réglée en fonction d'une épaisseur moyenne (dm) de la bande métallique sur la longueur (L2).
  4. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la bande métallique laminée de manière flexible (2) est enroulée dans une partie annulaire radialement intérieure (11) du coil (3) avec une plus grande traction d'enroulement (F11) que dans une partie annulaire radialement extérieure (13),
    dans lequel la partie annulaire radialement intérieure (11), s'étend sur un tiers radialement intérieur du coil (3).
  5. Procédé selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    la bande métallique (2) est enroulée dans la partie annulaire radialement intérieure (11) avec une traction de bobinage (F11) d'au moins 10 N/mm2 et/ou de 40 N/mm2 maximum en référence à une surface de section transversale (Am) de la bande métallique (2).
  6. Procédé selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    la bande métallique (2) est bobinée dans le tronçon annulaire situé radialement à l'extérieur (13) avec une traction d'enroulement (F13) d'au moins 5 N/mm2 et/ou de 35 N/mm2 maximum en référence à une surface de section transversale (Am) de la bande métallique (2).
  7. Procédé selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    une bande métallique (2) est utilisée avec une largeur (B2) d'au moins 400 mm, en particulier d'au moins 500 mm, et/ou
    une bande métallique (2) est utilisée avec une largeur (B2) de 2500 mm maximum, en particulier de 1300 mm maximum.
  8. Procédé selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    le diamètre extérieur (D3o) du coil (3) est plus petit que 2500 mm et plus grand que 1000 mm, et/ou,
    le diamètre intérieur (D3i) du coil est plus grand que 500 mm et plus petit que 700 mm.
  9. Procédé selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce qu'
    qu'on utilise une bande métallique (2) avec une résistance à la traction du matériau brut avant le laminage flexible de moins de 400 MPa, sachant que la bande métallique (2) est enroulée avec une traction d'enroulement (F13) de moins de 20 MPa au moins dans la partie annulaire radialement extérieure (13), et/ou
    qu'on utilise une bande métallique (2) avec une résistance à la traction du matériau brut avant le laminage flexible de plus de 400 MPa, sachant que la bande métallique (2) est enroulée avec une traction d'enroulement (13) de moins de 30 MPa au moins dans la partie annulaire radialement extérieure (13).
  10. Procédé selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce qu'
    avant l'enroulement (S30), un lubrifiant (22) est appliqué à la bande métallique laminée flexible (2), en particulier au moins 0,5 g/m2 et/ou jusqu'à 3 g/m2.
  11. Procédé selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce que
    le coil (3) est soumise dans un four à hotte (41) à un traitement thermique (S40) avec les phases de chauffe (S42), de maintien (S43) et de refroidissement (S44).
  12. Procédé selon la revendication 11,
    caractérisé en ce que
    le coil (3) est chauffée pendant le chauffage (S42) dans une plage de températures (T) de 100 °C à 600 °C avec une vitesse de chauffe moyenne (R42) d'au moins 0,50 °C/min et/ou de 1,8°C/min maximum, en particulier avec une vitesse de chauffe moyenne (R42) de 0,80 °C/min à 1,40 °C/min.
  13. Procédé selon l'une quelconque des revendications 11 ou 12,
    caractérisé en ce qu'
    un gaz protecteur (44) est introduit dans le four à hotte (41) pendant le chauffage (S42), sachant que dans une plage de températures (T) de 200 °C à 600 °C, une quantité de gaz protecteur moyenne de 0,5 m3/h maximum, en particulier 0,25 m3/h maximum, par tonne de bande métallique (2) est utilisée.
  14. Procédé selon l'une quelconque des revendications 11 à 13,
    caractérisé en ce que
    le coil (3) est refroidie au moins dans une première plage de températures (T44) après avoir quitté la période de maintien (S43), à une vitesse de refroidissement (R44) de moins de 0,35 °C/min.
  15. Procédé selon l'une quelconque des revendications 1 à 14,
    caractérisé en ce que
    la bande métallique (2) est laminée flexible de telle manière qu'au moins deux tronçons (8a, 8b, 8c, 8d, 8e) avec une épaisseur différente (d8a, d8b, d8c, d8d, d8e) sont produits, sachant qu'une première épaisseur (d8c) est plus petite qu'une deuxième épaisseur (d8b) et le rapport entre la première épaisseur (d8c) et la deuxième épaisseur (d8d) est inférieure à 0,8, en particulier inférieure à 0,7, en particulier inférieure à 0,6.
EP18175239.5A 2018-05-30 2018-05-30 Procédé permettant d'éviter le collage de bande à un matériau en bande laminé flexible Active EP3575008B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18175239.5A EP3575008B1 (fr) 2018-05-30 2018-05-30 Procédé permettant d'éviter le collage de bande à un matériau en bande laminé flexible
PCT/EP2019/063658 WO2019228985A1 (fr) 2018-05-30 2019-05-27 Procédé servant à éviter des colles pour bande sur du matériau en bande fabriqué par laminage flexible
CN201980035936.9A CN112203783A (zh) 2018-05-30 2019-05-27 用于避免柔性轧制的带材上的带粘结的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18175239.5A EP3575008B1 (fr) 2018-05-30 2018-05-30 Procédé permettant d'éviter le collage de bande à un matériau en bande laminé flexible

Publications (2)

Publication Number Publication Date
EP3575008A1 EP3575008A1 (fr) 2019-12-04
EP3575008B1 true EP3575008B1 (fr) 2022-08-24

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CN111257032B (zh) * 2020-03-19 2022-09-20 中铝瑞闽股份有限公司 一种铝合金热轧卷材取样方法
CN114561696A (zh) * 2022-02-25 2022-05-31 电子科技大学 一种超大面积单晶金属箔的制备方法

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DE19531447A1 (de) 1995-08-26 1997-02-27 Messer Griesheim Gmbh Verfahren zum Vermeiden von Klebern beim Glühen von Kaltband
DE19750780C2 (de) 1997-11-10 2001-11-08 Sms Demag Ag Arbeitsverfahren zum Aufbringen einer definierten Oberflächenrauheit auf ein Metallband
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CN104249091B (zh) * 2013-06-28 2017-08-25 宝山钢铁股份有限公司 一种取向硅钢连退机组卷取张力的控制方法
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EP3575008A1 (fr) 2019-12-04
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