Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
  • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
• • 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
  • B21B45/02—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 lubricating, cooling, or cleaning
  • B21B45/0239—Lubricating
• • 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
  • B21B45/02—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 lubricating, cooling, or cleaning
  • B21B45/0269—Cleaning
• • 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
  • B21B45/02—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 lubricating, cooling, or cleaning
  • B21B45/0269—Cleaning
  • B21B45/0275—Cleaning devices
  • B21B45/0278—Cleaning devices removing liquids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
  • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
  • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
  • B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
  • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
  • B21B2001/221—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by cold-rolling
• • 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
  • B21B2015/0057—Coiling the rolled product
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B2275/00—Mill drive parameters
  • B21B2275/02—Speed
  • B21B2275/06—Product speed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B2275/00—Mill drive parameters
  • B21B2275/02—Speed
  • B21B2275/08—Coiler speed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
  • B21B39/006—Pinch roll sets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters

Definitions

• the present invention relates to an installation and a formula ⁇ rolling method for a metal strip according to the preamble of claim 1.
• the strip is in continuous scrolling to limit the costly loss of time and material during the introduction and release of tape (such as for a black lami ⁇ discontinuous.
• the use of a welder is used to connect tails and success band heads ⁇ sive therebetween in a peeling section carried by at least one uncoiler. downstream of the mill or at least at the end of a complete line of rolling, it is finally required to separate these strips to wind them into separate coils by means of at least one winder
• the surface condition of the strip is a critical element of the quality of the strip through a complete line of rolling, c ' Therefore frequent visual inspections are usually necessary.
• the rolling facilities such as type tan dem ⁇ (suitable for carbon and stainless steel strips) are preferably equipped with double winders, pla ⁇ Cees in downstream exit of the rolling mill) and downstream of a shear making it possible to cut the strip preferentially on the fly and to separate it by forming disjoining strips to wind them alternately on preferentially two mandrels exerting on the strip upstream of the winding tensile spe cific ⁇ the requirements for good winding, good behavior coil once output of bo ⁇ cultivator mandrel and constraints of subsequent unwinding operations on multiple lines downstream the operation of lami ⁇ swimming.
• the web tension required for winding is gen ⁇ rattle different from that demanded by the operation of the mining ⁇ : web tension related to rolling is generally higher ⁇ even much higher than the strip tension necessary for winding at the cutting and transfer of the head of a band to its coiler, traction is usually established or permitted only by means of a traction unit such as a pinch capable of establishing a lower traction than the desired web tension in rolling out for good rolling conditions, which may induce a strip thickness of disturbance and a gen ⁇ ration final product out of tolerance to downgrade and often not in use, which is very expensive especially in the case of production of stainless steel.
• a traction unit such as a pinch capable of establishing a lower traction than the desired web tension in rolling out for good rolling conditions
• the mill roll speed at the output of the rolling mill must be reduced during operations downstream of the rolling mill outlet, especially during cutting of the strip (shearing, beginning of winding on a mandrel, introduction of paper tape between coil turns in stainless steel production, in- spection, etc.), which causes a loss of productivity if ⁇ gnificative and also a qualitative impact on ⁇ fac tors of the rolling process, defects generators on the thickness and flatness of the strip emerging from the rolling and in general all the qualitative factors degraded well known by the effect of transient regimes of variations of speed and / or low speed.
• a rolling mill from Nisshin Steel Company Limited (Publication GB1313577) has been described, featuring a tandem type mill for continuous production of a stainless steel band.
• the rolling mill is equipped tandem successive rolling stands (type 20-high) which certainly require changing times longer cylinders and not self ⁇ puterized but also tensioners blocks of type "pinch duet" upstream and downstream of the rolling mill and can Workoutvia ⁇ ner on the strip surface defects, thickness or flatness.
• This installation is however a good basic example of the present invention, in that it describes a rolling installation of a metal strip comprising at least:
• the present invention also provides to take into consideration means of lubrication and internal cooling roll (of the rollers of the ⁇ minoir and thus the tape) to ensure a pre report ⁇ defined rolling, crushing and slipping of the web between the rollers under the arc of contact strips on rolling rolls. Indeed they allow to obtain a degree of lubrication / cooling useful to rolling in the lami ⁇ black in order, on the one hand to cool the rolled strip together with other hand to allow to reach, under good condi ⁇ and under the rolling force, a desired ratio between the rolling, crushing and sliding of the strip scroll ⁇ ment in the rolling mill.
• the output of the rolling mill the strip has a surface retention, residual rolling agents such as traces of oil and other liquid component watering cy ⁇ lindres and band used for the rolling process, as well as fats coming from various possible contributions. Due to the presence of oil, other grease or other on the strip, it can not be exerted easily on the strip at the output of the rolling mill, a tensile stress significantly strong, for good rolling conditions .
• the traction is generated by a traction unit at the output of the ⁇ minoir such as tensioning rollers and / or clamping means by rollers, these pull elements are necessarily coated by accumulation of the oil, on the other body fat or other residual, which inevitably reduces the coefficient of friction and adhesions necessary to exert traction on the band.
• sliding phenomena provo ⁇ cate and promote lateral deviations of tape along its path to the winder (for example in an accumulator at the end of the mill or / and on the winder) which generate drops consequent productivi ⁇ té.
• This case then requires means to com ⁇ beat and correct these band position deviations which induce a real lack of control band scroll characteristics such as non-precision qualities of traction, accumulation, and / or winding, particu ⁇ binding on fields of the coils.
• the oil, other fatty substances or other residual remaining on the strip surface at the end of the mill also have a pollution factor on the final cleanliness of the strip degrading its final quality and disturbing the mechanical properties and clean preservation of the strip. of paper necessary for the winding of tape in the particular case of stainless strips bobi ⁇ ner.
• An object of the present invention is to provide a settled ⁇ and a method of rolling a metal strip high productivity, by guaranteeing an increased control of tape running characteristics independently of the operations made at the rolling output and especially ⁇ from at least one traction unit downstream of a laminate to a final winding downstream of the trac ⁇ tion unit.
• the installation according to the invention should in particular allow better productivity for a predominantly stainless type strip.
• bo ⁇ web hoeing comprising insertion of an interposed paper web is usually performed at the end of a line of lami ⁇ swim to protect the strip surface between bobi turns ⁇ born
• the installation according to the invention should allow insertion of the simpler paper film, robust and reliable.
• a set of subclaims also has advantages of the invention.
• FIG. 1 Application of the method according to the invention is provided by means of FIG. 1 and its description below.
• a va ⁇ laughing outlet of said installation of the same embodiment is also shown in Figure 2.
• Figure 1 From a rolling installation of a metal band ⁇ lique (3) shown in Figure 1 comprising at least:
• rolling agents placed in contact with cylinders of the the rolling mill and with the belt, said agents comprising at least one means for lubricating and internally cooling rolling rolls (commonly arranged in at least one roll stand (7), here 5 stands are shown) in order to guarantee an optimum ratio predefined between the rolling, crushing and sliding properties of the belt between the rolling rolls,
• a traction unit (9) of strip disposed at the output of the rolling mill, said traction unit being part of a set of a plurality of traction units (in FIG. 1 only two traction units 9, 9 'are shown for reasons of clarity) distributed between the output lami ⁇ black to an outlet of the installation such as a bobi ⁇ neuse (13, 14) or a bridged metal treatment (not shown) ,
• the installation according to the invention is characterized in that a pollution control module (8) comprising at least one means of ⁇ lubrication, preferably followed by brushing means, rinsing and drying, is arranged between the output of lami- noir and the traction unit, in order to eliminate the said residual agents at the output of the rolling mill.
• a pollution control module (8) comprising at least one means of ⁇ lubrication, preferably followed by brushing means, rinsing and drying, is arranged between the output of lami- noir and the traction unit, in order to eliminate the said residual agents at the output of the rolling mill.
• the strip has an increased adhesion and therefore a better controlled trajectory when it passes over deflection rollers and at the inlet of each of the traction units (9, 9 '), an accumulator (10) downstream of at least a portion (9) of the traction units (9, 9 ') and other installations downstream of the rolling mill.
• Deviations, especially lateral, band trajectories thus avoided are there because one may ⁇ increased Trise of tape running characteristics is achieved regardless of the operations made out of rolling and especially since at least the pre ⁇ Mière unit traction (9) downstream of the rolling mill to a final winding (13, 14) downstream of the traction unit.
• the traction unit (9, 9 ') may comprise only tensioning rollers of the band in def ⁇ ⁇ ment to exert a majority tensile tension, in particular said unit may comprise only optionnally pinch means for exercise a minor or even null auxiliary tension. The result is therefore less band induced defects incidentally by means of pine ⁇ cage, thus higher productivity and quality.
• the plant according to the invention is particularly well adapted to high end product productivity for a continuously moving web mainly comprising a stainless metal. Indeed, two advantageous aspects are obser ⁇ vables:
• an inspection see module visual inspection / optical / acoustic / mechanical / etc. (11) band disposed downstream of the output of the accumulator (10) tape), shearing (12), a belt passage of a bo ⁇ machine (13) on another winder (14), etc. on a tape section almost completely immobile.
• the means used to perform these inspection operations, ci ⁇ saillage, introduction of paper tape winding, etc. are then simpler than those implemented if the tape scrolls at higher speed.
• the output of the accumulator (10) can be simply couplable to a ⁇ tree of a winding machine (13) which is disposed in its upstream shears (12) capable of cutting the tape stopped.
• Figures 1 and 2 having an output
• the output of the accumulator (10) is cou ⁇ plable to an inlet of two winders (13, 14) or (13, 14, 15 according to Figure 2) for which is arranged upstream of a shear (10) which can cut the web (scrolling) on the fly, in particular the two winders being arranged either independently ( Figure 1) or in pairs on a carousel drum (15) (see figure 2).
• Figures 1 and 2 presen ⁇ tent continuous winding means adapted to the purpose of high productivity of the invention.
• a paper web inserter (not shown for reasons of clarity) is arranged downstream of the sor ⁇ tie of the accumulator (10) of tape.
• the accumulator allows its output a sharp decrease in tape speed (conversely at the very high speed of tape entrance into the accumulator), said insertion module does not should not be complicated unlike a more sophis ⁇ winced module and costly need for higher web speeds. This also results in greater simplicity, robus ⁇ hostess and reliability of the tape winding process. This is therefore a definite advantage in the case of stainless steel strips.
• the installation according to the invention provides a degreasing unit control module adapted to be driven by the system parameters and the physical properties of the running web such that at least one rate imposed lubricated ⁇ cation at the rolling mill (7) and a maximum band rolling factor guaranteed by the traction unit (9, 9 ').
• This control system allows a born Affi optimization decontamination module adjustment to achieve a more economical pollution in terms of the use of degreasers or other skimmers while guaranteed health ⁇ optimal pollution control (thus environmentally penny ⁇ haitable) in order to achieve better traction control and track trajectory and higher productivity.
• the installation according to the invention comprises successively from its main inlet and upstream of the rolling mill, at least one uncoiler (1, 2), a welder (4), an accumulator (6), at least one traction unit (5, 5 ').
• these coupled elements allow high speeds of travel ⁇ upstream of the rolling mill, knowing that the invention increases the speed of scroll rolling production producti ⁇ increased, because of better control trajector strip area downstream of the rolling mill.
• the installation according to the invention may comprise downstream of the traction unit (9, 9 ') at least one so-called APL line (derived from the Annealing Pickling Line in English, as well as from other types underlying CAPL 'Cold
• APL line derived from the Annealing Pickling Line in English, as well as from other types underlying CAPL 'Cold
• An- nealing Pickling Line is directly coupled in continuous strip travel or coupled via at least one coiler downstream of the traction unit to a CAPL line-entry uncoiler.
• a direct coupling has a disadvantage of speed of scrolling, because line CAPL imposes tape running speeds much lower than those reached by the installation according to the invention.
• the tape running speed in a rolling mill (7) to the inlet band in a battery ⁇ emulator (10) year downstream of the rolling mill reaches a maximum speed such as 400 to 600m / min;
• the accumulator (10) initiates a tape to at least one clearance bobi ⁇ neuse (13, 14) at a reduced speed to that of the pre ⁇ Mière step such as 30 to 60 even 100m / min;
• the winder initiates a maximum strip winding speed, such as greater than 550m / min or 750m / min.
• this method allows an inspection (11) and a shearing (12) which are performed during the second step while the tape running speed is re ⁇ ducted.
• the method according to the invention allows a paper sheet insertion on the tape also initiated during the second step while the tape speed is reduced.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Metal Rolling (AREA)
• Winding, Rewinding, Material Storage Devices (AREA)
• Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
• Cleaning In General (AREA)
• Replacement Of Web Rolls (AREA)
• Control Of Metal Rolling (AREA)

Priority Applications (1)

Applications Claiming Priority (3)

Publications (2)

Family

ID=47844230

Family Applications (2)

Family Applications Before (1)

Country Status (7)

Families Citing this family (6)

Family Cites Families (9)

• 2013
  • 2013-02-22 EP EP13290036.6A patent/EP2769779A1/de not_active Withdrawn
  • 2013-12-10 BR BR112015019600-4A patent/BR112015019600B1/pt active IP Right Grant
  • 2013-12-10 EP EP13811412.9A patent/EP2958687B1/de active Active
  • 2013-12-10 CN CN201380073550.XA patent/CN105008058B/zh active Active
  • 2013-12-10 ES ES13811412T patent/ES2729567T3/es active Active
  • 2013-12-10 TR TR2019/05534T patent/TR201905534T4/tr unknown
  • 2013-12-10 WO PCT/EP2013/076081 patent/WO2014127864A1/fr not_active Ceased
  • 2013-12-10 US US14/769,873 patent/US9573174B2/en not_active Expired - Fee Related

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