US20040226633A1 - Method of producing coils of sheet metal and the spacer designed to implement said method - Google Patents

Method of producing coils of sheet metal and the spacer designed to implement said method Download PDF

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Publication number
US20040226633A1
US20040226633A1 US10/483,235 US48323504A US2004226633A1 US 20040226633 A1 US20040226633 A1 US 20040226633A1 US 48323504 A US48323504 A US 48323504A US 2004226633 A1 US2004226633 A1 US 2004226633A1
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US
United States
Prior art keywords
spool
metal sheet
spacer device
space
spacer
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.)
Abandoned
Application number
US10/483,235
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English (en)
Inventor
Paul Dorsimont
Philippe Noe
Francois Dugelay
Pierre Woll
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.)
USINOR SA
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to USINOR reassignment USINOR ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DORSIMONT, PAUL, DUGELAY, FRANCOIS, NOE, PHILIPPE, WOLL, PIERRE
Publication of US20040226633A1 publication Critical patent/US20040226633A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • B21C47/26—Special arrangements with regard to simultaneous or subsequent treatment of the 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
    • C21D11/00—Process control or regulation for heat treatments
    • 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
    • C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • G01K1/146—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations arrangements for moving thermometers to or from a measuring position

Definitions

  • the present invention concerns a method of manufacturing spools of metal sheet, and a spacer device suitable for implementing said method.
  • the slabs of steel In the steel production cycle, the slabs of steel, generally obtained by continuous casting, undergo a first hot rolling to obtain sheets of medium thickness that are rolled into spools, then unrolled for pickling and cold rolling to obtain sheets with the desired final thickness. Upon completion of the cold rolling, the sheets are again rolled into spools, and for many types of steel, these spools are given a heat treatment such as annealing in order to obtain the desired mechanical characteristics.
  • Control of this annealing operation can be accomplished by means of mathematical models that are not very accurate, or by means of temperature measuring devices such as those described in the patent FR 2 703 780 (Sollac).
  • This device comprises a plate made of heat-conducting material that is inserted by manually or pneumatically hammering it between the coils of the spool. This plate has a slot in which a thermocouple is then inserted, making it possible to measure the actual temperature at the core of the spool.
  • thermocouple holder plates such as spools of high carbon steel (more than 0.3% by weight), for example, and one spool of steel of sufficiently low rigidity, such as a mild steel, so that said type of plate can be inserted therein.
  • the heat treatment suitable for the first type of spools is then controlled by means of the data furnished by the spool having a thermocouple.
  • the duration of the heat treatment that the spools not having a thermocouple must undergo is not suitable for the spool having the thermocouple.
  • the heat treatment of the spools of high carbon steel is twice as long as what is used for the spools of mild steel, which results in a significant loss of productivity.
  • the purpose of the present invention therefore is to remedy the disadvantages of the methods of the prior art by providing a method of manufacturing spools of metal sheet, which is adapted to all types of spools, regardless of their stiffness, which would be easier to implement and would allow to increase productivity.
  • a first objective of the present invention is a method of manufacturing spools of metal sheet, comprising a spooling of said metal sheet at the outlet of a hot rolling operation, of cold rolling and pickling, characterized in that said method comprises the steps consisting of:
  • the invention can also have one or more of the following characteristics, taken alone or in combination:
  • the space created by the spacer device corresponds appreciably to the volume of the heat measuring device to be inserted therein
  • the spacer device is made of one or more thermodegradable materials most of which decompose at the temperatures reached during the heat treatment,
  • the spool of metal sheet is a spool of steel sheet having more than 0.3% by weight of carbon
  • the spool of metal sheet is a spool of sheet having a thickness of more than 1.2 mm
  • the heat treatment is an annealing treatment carried out at a temperature of between 600 and 750° C.
  • the spacer device is attached to said edge of the metal sheet with an adhesive.
  • the metal sheet can be selected, for example, from among mild steels, high carbon steels (more than 0.3% by weight), or any other metal or alloy that can be formed into spools, whether the thickness of the sheet is less than or more than 1.2 mm.
  • a second purpose of the present invention is a spacer device intended to be used during the implementation of the method according to the invention in all of its forms of embodiment, said spacer device being comprised of two appreciably identical parallelepiped parts made of compression resistant material, connected by a junction part so that a space is made between the two parallelepiped parts, said space corresponding appreciably to the volume of the heat measuring device to be inserted therein.
  • the spacer device according to the invention is also composed of one or more thermodegradable materials, selected from the group formed by wood, cardboard, and paper.
  • FIG. 1 represents the step of installing a spacer device during the implementation of the method according to the invention
  • FIG. 2 represents a view in perspective of a spacer device according to the invention
  • FIG. 3 represents the step of inserting a heat measuring device in the core of a spool of metal sheet
  • FIG. 4 represents a part of the heat measuring device of FIG. 3.
  • FIG. 1 shows a sheet of steel 1 of thickness equal to 1.2 mm containing more than 0.3% by weight of carbon, having just been pickled after hot rolling, and which is coiled by means not shown.
  • the first step of the method according to the invention consists of attaching a spacer device 2 on one edge of the sheet 1 .
  • the spacer device 2 shown in FIG. 2, is here composed of two identical parts 3 and 4 , made of wood, connected by a junction part 5 made of heavy cardboard.
  • Each part 3 or 4 is a parallelepiped shaped block the thickness of which decreases slightly as it goes away from the junction part 5 .
  • This junction part 5 is U-shaped, each of the parts 3 and 4 being symmetrically glued to one of the arms of this U.
  • the parts 3 and 4 are thus separated by a space 6 the width of which is determined by the distance between the arms of the U of the part 5 , and the length of which is equal to that of the parts 3 and 4 .
  • These parts 3 and 4 are made of wood, which has the advantage of ensuring the disintegration of the spacer device 2 during the last heat treatment, while guaranteeing sufficient compressive strength to ensure the existence of the space 6 during the coiling of the spool.
  • the lower face of the device 2 is also provided with an adhesive strip of the double face type of adhesive.
  • a spool 7 as shown in FIG. 3 is thus obtained, said spool 7 having been transported and placed on edge in a heat treatment facility.
  • the insertion of the spacer device 2 has separated the two coils of the spool 7 between which it is located as a result of the coiling.
  • the space 6 between the parts 3 and 4 is thus left free.
  • the junction part 5 has been folded over onto the edge of the spool 7 so as not to hinder the insertion of a heat measuring device 8 .
  • This device 8 comprises a section of metal plate 9 , shown in FIG. 4, which has a longitudinal slot 11 in which a thermocouple 10 is inserted.
  • This thermocouple 10 is made to remain in the heat facility because of its great fragility, making it necessary to limit its movements and handling in general.
  • the section of plate 9 is identical to the one covered by the French patent 2 703 780, to which reference may be made for a more detailed description.
  • the heat measuring device 8 in this instance is installed twice. The operator first inserts the section of plate 9 in the space 6 between the two parts 3 and 4 of the spacer device 2 . Then he inserts the thermocouple 10 in the slot 11 of the section of plate 9 .
  • the space 6 created between the parts 3 and 4 of the spacer device 2 corresponds to the volume of the heat measuring device 8 , so that the temperatures picked up by the thermocouple 10 are as close as possible to the actual temperatures of the steel sheet 1 .
  • the extraction of the device 8 is much easier in comparison to the same operation performed in the methods of the prior art, because the space made between the coils of the spool 7 has not varied at all between the beginning and end of the annealing, in a way that is quite surprising, and this is in spite of the disintegration of the spacer device 2 .
  • edge area of the spool 7 on which the spacer device 2 had been attached shows no trace of the operation, which has the additional advantage of being able to carry out the cold rolling with no risk of damage to the cylinders of the rolling mill.
  • the method according to the invention is particularly advantageous when it is used to control the annealing of spools of metal sheet too stiff to have an appropriate heat measuring device inserted directly therein, it is obvious that it can also be used to control the annealing of any spools of metal sheet, regardless of their stiffness and thickness. Indeed, its use is also advantageous there because the insertion of the heat measuring device is much easier compared to the methods of the prior art. The same is true for its extraction when the spacer device 2 self-destructs during the heat treatment.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
US10/483,235 2001-07-10 2002-07-04 Method of producing coils of sheet metal and the spacer designed to implement said method Abandoned US20040226633A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR01/09125 2001-07-10
FR0109125A FR2827201B1 (fr) 2001-07-10 2001-07-10 Procede de fabrication de bobines de toles metalliques, et dispositif espaceur adapte a sa mise en oeuvre
PCT/FR2002/002330 WO2003008124A1 (fr) 2001-07-10 2002-07-04 Procede de fabrication de bobines de toles metalliques et dispositif espaceur adapte a sa mise en oeuvre

Publications (1)

Publication Number Publication Date
US20040226633A1 true US20040226633A1 (en) 2004-11-18

Family

ID=8865308

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/483,235 Abandoned US20040226633A1 (en) 2001-07-10 2002-07-04 Method of producing coils of sheet metal and the spacer designed to implement said method

Country Status (4)

Country Link
US (1) US20040226633A1 (fr)
EP (1) EP1406736A1 (fr)
FR (1) FR2827201B1 (fr)
WO (1) WO2003008124A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858430A (ja) * 1981-09-30 1983-04-07 Sumitomo Metal Ind Ltd 焼鈍炉におけるコイル温度測定方法
FR2703780B1 (fr) * 1993-04-08 1995-07-07 Lorraine Laminage Dispositif de mesure de temperature entre les spires d'une bobine en bande metallique.

Also Published As

Publication number Publication date
FR2827201A1 (fr) 2003-01-17
EP1406736A1 (fr) 2004-04-14
FR2827201B1 (fr) 2003-09-12
WO2003008124A1 (fr) 2003-01-30

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Date Code Title Description
AS Assignment

Owner name: USINOR, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DORSIMONT, PAUL;NOE, PHILIPPE;DUGELAY, FRANCOIS;AND OTHERS;REEL/FRAME:015531/0395

Effective date: 20040312

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION