US3095361A - Method of manufacturing tinplate - Google Patents

Method of manufacturing tinplate Download PDF

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Publication number
US3095361A
US3095361A US91708A US9170861A US3095361A US 3095361 A US3095361 A US 3095361A US 91708 A US91708 A US 91708A US 9170861 A US9170861 A US 9170861A US 3095361 A US3095361 A US 3095361A
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United States
Prior art keywords
strip
tinplate
thin
mill
cold
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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.)
Expired - Lifetime
Application number
US91708A
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English (en)
Inventor
Morris D Stone
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.)
United Engineering and Foundry Co
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United Engineering and Foundry Co
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Priority to NL125143D priority Critical patent/NL125143C/xx
Priority to NL273429D priority patent/NL273429A/xx
Application filed by United Engineering and Foundry Co filed Critical United Engineering and Foundry Co
Priority to US92014A priority patent/US3150065A/en
Priority to US91708A priority patent/US3095361A/en
Priority to FR885130A priority patent/FR1310977A/fr
Priority to DEU8653A priority patent/DE1296661B/de
Priority to GB7388/62A priority patent/GB1002448A/en
Publication of US3095361A publication Critical patent/US3095361A/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • 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
    • 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
    • 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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles by means of mandrels
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold rolling
    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/50—Electroplating: Baths therefor from solutions of platinum group metals
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/06—Wires; Strips; Foils
    • C25D7/0614—Strips or foils
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/24—Reinforcing the conductive pattern
    • H05K3/241—Reinforcing the conductive pattern characterised by the electroplating method; means therefor, e.g. baths or apparatus
    • 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
    • Y10T29/30—Foil or other thin sheet-metal making or treating
    • Y10T29/301—Method
    • Y10T29/302—Clad or other composite foil or thin metal making

Definitions

  • This invention relates to a method of producing very thin tinplate characterized by a high production capacity and capable of producing tinplate at a substantial saving in manufacturing costs over known methods and wherein the tinplate will have improved metallurgical characteristics.
  • One procedure is to utilize the ⁇ ordinary processing equipment employed to produce normal gauge tinplate, which consists of reducing the hot rolled and pickled strip in a tandem cold reduction rolling mill where the strip is reduced immediately to its ultra-thin gauge, i.e., to an order of .0045" thick.
  • This ⁇ operation is followed by a continuous annealing process, wherein the ultra-thin strip is cleaned and annealed to a soft metallurgical condition.
  • the strip which is not only very thin but also very soft, both of which factors being conducive to high scrap losses, is transferred to a skin-pass rolling mill for further processing.
  • This operation is designed primarily to develop the desired mechanical properties, along with achieving a smoother and flatter strip surface. The strip, however, retains a considerable degree of softness after the skin-.pass operation.
  • the ultra-thin strip is transferred for the third time to an electrolytic tinning line.
  • the strip is rst cleaned, pickled and tinned, after which it is passed through reilowing, passivating or chemical treatment and oiling zones.
  • it is to be appreciated that it is necessary to repeatedly handle, transfer and process the strip in its ultra-thin and soft condition; in which connection when cognizance is taken of the intricacies of the equipment that performs this manner of processing of the very thin strip, it will really be understood why great scrap losses are involved.
  • the -hot rolled strip in this case is reduced to approximateiy the order of .020 inch thicker than in the case of the previous explained method, ie., approximately of the order of .100 inch thick.
  • the hot rolled and pickled strip is transferred to a tandem cold reducing mill where the strip is reduced to a thickness of the order of .009 inch, that is, approximately double its final desired thickness.
  • the strip is transferred in its still relatively thick gauge to an annealing line, where it is cleaned and annealed in the usual manner. From the annealing line, the strip, still in its relatively thick but now soft state, may then be processed in a skin-passing mill, although, in some cases, this step may not be included.
  • the strip is then transferred to a thinning line, where it is cleaned, pickled, tinned, reowed, passivated or chemically treated and oiled. After tinning, the strip is then reduced about 50% in a second cold reduction mill to the iinal desired ultrathin gauge and having the desired hardness.
  • the degrees of hardnesses that are known to be obtained in this method have been lwithin the range of T-7 (T-30 Rockwell of 7l to 78).
  • After the rolling of the tinned strip it is transferred in its ultra-thin condition to a fourth process line and to its sixth independent processing step where it is cleaned and passivated, and sometimes reflowed for the second time.
  • FIG. ⁇ 1 illustrates diagrammatically and in sequence the novel steps of the present invention.
  • FIG. l With reference t FIG. l there is shown the last mill stand of a hot strip rolling mill 11 wherein the hot strip is reduced in thickness and following which it is coiled on a mandrel 12.
  • the strip be reduced in the hot rolling imill to a gauge within the range of .080 to .110 inch thick.
  • the thickness of the strip issuing from the hot mill is of the order of .100 inch.
  • the hot rolled strip in the form of a coil, is transferred from the mandrel 12 to a pickling line 13 in which it is, in the usual manner, placed on a pay-off reel 14, joined to the end of a previous strip and fed through the pickling zones, after which it is coiled again on a wind-up reel 15.
  • the strip during the pickling operation is still in a very thick condition, Ii.e., as previously mentioned .100 inch, so that there will be experienced no scrap losses such as would result if very thin strip were being pickled.
  • the pickled strip in coiled form is transferred to a tandem cold reduction mill 16 where the coil is placed on a pay-off reel 17, fed through each of the five, or as shown in phantom six, stands of the mill and then wound on a tension reel 18.
  • the strip will be reduced in the cold reduction mill to a thickness within the range of .006 to .012 inch.
  • the thickness of the strip issuing from the cold mill 16 is of the order of .009 inch. This thickness represents approximately double the desired final thickness of the product. In this condition, it is to be observed that the strip will be still relatively thick and by reason of the rolling operation very hard.
  • the strips thickness is approximately twice as great as its ultimate desired gauge, the handling, transferring and the immediate subsequent processing thereof will lbe done without experiencing the considerable scrap losses that are inherent in handling very thin material,
  • the relatively thick hard strip in coil form, is transferred to an annealing line 19 where it is placed on a pay-off reel 21 and the leading end joined to the trailing end of ⁇ a previous istrip, and fed through the annealing line.
  • the strip will be cleaned before being annealed lafter which it will pass through the annealing zone and be coiled on a windup rcel 22. It is to be appreciated that at this stage of the operation the strip, as it leaves the annealing line, will be very soft, but at the same time it will have a substantial thickness, and in view of this fact in the further handling, transferring and processing thereof, scrap losses will be minimized.
  • the strip -in coiled form is transferred to :a second cold reduction mill 23 which may consist of either one or two or more stands, a second stand being shown in phantom in the drawing.
  • the strip, in coiled form is adapted to be placed on a pay-off reel 24, fed through the mill and wound upon a tension reel 25.
  • the strip when it is transferred .from the annealing line and during the time it is being handled at the entry side of the second reduction mill 23 will be in a soft condition, but at the same time it will be relatively thick, hence minimizing scrap losses during this phase of the operation.
  • the strip is adapted to be giVeIl its final reduction to its ultra-thin form in the reduction mill Z3 in which the thickness should be within the range of .003 to .006 inch.
  • the reduction taken in the -rnill 23 should be of the order of from 30 to 60 percent.
  • the final thickness of the strip will be of the order of .0045 inch, which will represent a 50 percent reduction.
  • the strip After the second cold reduction operation the strip, in coil form, is transferred in its very thin but very hard condition to an electrolytic thinning line 26 where it is placed on a pay-olf reel 27, joined to the trailing end of a previous strip, and fed through the line, after which it will be coiled upon a windup reel 28.
  • This electrolytic tinning line incorporates the usual equipment adapted to electro-clean, pickle, tin, reow, passivate and oil the strip. It is a feature of this invention to perform all rolling of the strip prior to the tinning operation thereby avoiding the possibility of marring the tinned surfaces.
  • the strip, according to the present invention Will be presented to the thinning line in its nal very thin gauge. However, since by employing the method of the present invention, the strip will have a substantial hardness and improved strength qualities obtained by cold rolling of the strip and as a result scrap losses Iwill be minimized in the further transferring, handling and processing of the strip.
  • the present invention provides a method wherein the resulting tinplate is made very thin with a substantial reduction in the material cost and in the practice of which substantially all of the transferring, handling and processing of the strip are performed, while 4the strip is still in its soft thick condition. Furthermore, when the strip is in its very thin condition, which is only for a small fraction of the overall processing and handling time, this strip is maintained very hard so that a considerable reduction in the scrap losses over the entire processing operation is effected.
  • the strip not only will be characterized by a substantial hardness and improved strength qualities, which are achieved by rolling, but the strip after tinning will not he subjected to any rolling, thereby resulting in an overall advantage that not only is the product economically produced but it is produced on a line having a very high capacity.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Metal Rolling (AREA)
US91708A 1961-02-27 1961-02-27 Method of manufacturing tinplate Expired - Lifetime US3095361A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL125143D NL125143C (en)) 1961-02-27
NL273429D NL273429A (en)) 1961-02-27
US92014A US3150065A (en) 1961-02-27 1961-02-27 Method for plating palladium
US91708A US3095361A (en) 1961-02-27 1961-02-27 Method of manufacturing tinplate
FR885130A FR1310977A (fr) 1961-02-27 1962-01-17 Procédé et appareil pour produire du fer-blanc très mince
DEU8653A DE1296661B (de) 1961-02-27 1962-01-26 Verfahren zur Herstellung von sehr duennem Weissblech
GB7388/62A GB1002448A (en) 1961-02-27 1962-02-26 Method of manufacturing tinplate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91708A US3095361A (en) 1961-02-27 1961-02-27 Method of manufacturing tinplate

Publications (1)

Publication Number Publication Date
US3095361A true US3095361A (en) 1963-06-25

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ID=22229255

Family Applications (1)

Application Number Title Priority Date Filing Date
US91708A Expired - Lifetime US3095361A (en) 1961-02-27 1961-02-27 Method of manufacturing tinplate

Country Status (4)

Country Link
US (1) US3095361A (en))
DE (1) DE1296661B (en))
GB (1) GB1002448A (en))
NL (2) NL273429A (en))

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214820A (en) * 1963-02-08 1965-11-02 Nat Steel Corp Steel foil and manufacture
US3264144A (en) * 1962-09-13 1966-08-02 Youngstown Sheet And Tube Co Method of producing a rolled steel product
US3276985A (en) * 1962-07-31 1966-10-04 Lancy Lab Apparatus for electro treating
US3285790A (en) * 1964-06-04 1966-11-15 Youngstown Res And Dev Co Process for production of tin plate
US3323953A (en) * 1964-09-15 1967-06-06 United States Steel Corp Method of treating steel and novel product
US3355265A (en) * 1965-04-16 1967-11-28 United States Steel Corp Method of producing ductile coated steel and novel product
US3378360A (en) * 1964-09-23 1968-04-16 Inland Steel Co Martensitic steel
US3632487A (en) * 1969-09-30 1972-01-04 Pennwalt Corp Method of preparing tinplate
EP0679451A1 (en) * 1994-04-27 1995-11-02 Hoogovens Staal B.V. Apparatus and method for the manufacture of DR steel strip
US5618401A (en) * 1992-07-16 1997-04-08 Toyo Kohan Co., Ltd. Inner-shield material to be attached inside a color cathode ray tube and manufacturing method thereof
US20090038716A1 (en) * 2004-06-18 2009-02-12 Nippon Steel Corporation Steel sheet for tin plated steel sheet and tin-free steel sheet each having excellent formability and manufacturing method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI507256B (zh) * 2012-08-06 2015-11-11 China Steel Corp Production method of cold rolled products free of electrolytic cleaning
CN109530437B (zh) * 2018-12-11 2020-09-11 佛山市诚德新材料有限公司 一种不锈钢带的冷轧方法及不锈钢带

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA472120A (en) * 1951-03-13 Carnegie-Illinois Steel Corporation Electrolytic tin plates
US2673836A (en) * 1950-11-22 1954-03-30 United States Steel Corp Continuous electrolytic pickling and tin plating of steel strip
US2906652A (en) * 1956-06-20 1959-09-29 United States Steel Corp Method of making bright-finished steel strip

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA472120A (en) * 1951-03-13 Carnegie-Illinois Steel Corporation Electrolytic tin plates
US2673836A (en) * 1950-11-22 1954-03-30 United States Steel Corp Continuous electrolytic pickling and tin plating of steel strip
US2906652A (en) * 1956-06-20 1959-09-29 United States Steel Corp Method of making bright-finished steel strip

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276985A (en) * 1962-07-31 1966-10-04 Lancy Lab Apparatus for electro treating
US3264144A (en) * 1962-09-13 1966-08-02 Youngstown Sheet And Tube Co Method of producing a rolled steel product
US3214820A (en) * 1963-02-08 1965-11-02 Nat Steel Corp Steel foil and manufacture
US3285790A (en) * 1964-06-04 1966-11-15 Youngstown Res And Dev Co Process for production of tin plate
US3323953A (en) * 1964-09-15 1967-06-06 United States Steel Corp Method of treating steel and novel product
US3378360A (en) * 1964-09-23 1968-04-16 Inland Steel Co Martensitic steel
US3355265A (en) * 1965-04-16 1967-11-28 United States Steel Corp Method of producing ductile coated steel and novel product
US3632487A (en) * 1969-09-30 1972-01-04 Pennwalt Corp Method of preparing tinplate
US5821686A (en) * 1992-07-16 1998-10-13 Tokyo Kohan Co., Ltd. Inner-shield material to be attached inside a color cathode ray tube
US5618401A (en) * 1992-07-16 1997-04-08 Toyo Kohan Co., Ltd. Inner-shield material to be attached inside a color cathode ray tube and manufacturing method thereof
NL9400674A (nl) * 1994-04-27 1995-12-01 Hoogovens Groep Bv Inrichting en werkwijze voor het vervaardigen van DKG bandstaal.
US5693287A (en) * 1994-04-27 1997-12-02 Hoogovens Staal Bv Apparatus and method for the manufacture of DR steel strip
EP0679451A1 (en) * 1994-04-27 1995-11-02 Hoogovens Staal B.V. Apparatus and method for the manufacture of DR steel strip
US5833778A (en) * 1994-04-27 1998-11-10 Hoogovens Groep B.V. Apparatus and method for the manufacture of DR steel strip
US20090038716A1 (en) * 2004-06-18 2009-02-12 Nippon Steel Corporation Steel sheet for tin plated steel sheet and tin-free steel sheet each having excellent formability and manufacturing method thereof
US8012276B2 (en) 2004-06-18 2011-09-06 Nippon Steel Corporation Method for manufacturing a steel sheet for tin plated steel sheet and tin-free steel sheet each having excellent formability

Also Published As

Publication number Publication date
DE1296661B (de) 1969-06-04
NL273429A (en))
NL125143C (en))
GB1002448A (en) 1965-08-25

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