US3834207A - Method and apparatus for forming an accurately dimensioned metal strip having varying thickness - Google Patents

Method and apparatus for forming an accurately dimensioned metal strip having varying thickness Download PDF

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US3834207A
US3834207A US00285015A US28501572A US3834207A US 3834207 A US3834207 A US 3834207A US 00285015 A US00285015 A US 00285015A US 28501572 A US28501572 A US 28501572A US 3834207 A US3834207 A US 3834207A
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rolls
roll
work
strip
raised portion
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US00285015A
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R Laigle
A Rakich
W Sivakoff
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Akzo America Inc
General Electric Co
Aurubis Buffalo Inc
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Anaconda Co
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Priority to US00285015A priority Critical patent/US3834207A/en
Priority to CA176,136A priority patent/CA985072A/en
Priority to GB3511573A priority patent/GB1433515A/en
Priority to IT69263/73A priority patent/IT991887B/en
Priority to SE7310484A priority patent/SE413851B/en
Priority to BR6431/73A priority patent/BR7306431D0/en
Priority to FR7331107A priority patent/FR2197662B3/fr
Priority to DE19732343579 priority patent/DE2343579A1/en
Priority to JP48096271A priority patent/JPS4959064A/ja
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Publication of US3834207A publication Critical patent/US3834207A/en
Assigned to ATLANTIC RICHFIELD COMPANY, A PA CORP. reassignment ATLANTIC RICHFIELD COMPANY, A PA CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ANACONDA COMPANY THE, A DE CORP
Assigned to AMERICAN BRASS COMPANY, L.P., A DELAWARE LIMITED PARTNERSHIP reassignment AMERICAN BRASS COMPANY, L.P., A DELAWARE LIMITED PARTNERSHIP ASSIGNMENT OF ASSIGNORS INTEREST. SUBJECT TO LICENSE RECITED Assignors: ATLANTIC RICHFIELD COMPANY, A CORP. OF DE.
Assigned to ANSONIA COPPER & BRASS, INC., A CORP. OF DE. reassignment ANSONIA COPPER & BRASS, INC., A CORP. OF DE. LICENSE (SEE DOCUMENT FOR DETAILS). Assignors: AMERICAN BRASS COMPANY
Assigned to BANCBOSTON FINANCIAL COMPANY reassignment BANCBOSTON FINANCIAL COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ANSONIA COPPER & BRASS, INC.,
Assigned to HELLER FINANICAL., INC. reassignment HELLER FINANICAL., INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMERICAN BRASS COMPANY, L. P.
Assigned to AKZO AMERICA INC., A CORP. OF DE reassignment AKZO AMERICA INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: STAUFFER CHEMICAL COMPANY
Assigned to NORSTAR BANK, NATIONAL ASSOCIATION, A NATIONAL BANKING ASSOCIATION reassignment NORSTAR BANK, NATIONAL ASSOCIATION, A NATIONAL BANKING ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMERICAN BRASS COMPANY, L.P., A DE. LIMITED PARTNERSHIP
Assigned to OUTOKUMPU AMERICAN BRASS, INC., A CORP. OF DE reassignment OUTOKUMPU AMERICAN BRASS, INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AMERICAN BRASS COMPANY, L.P., A DE LIMITED PARTNERSHIP
Assigned to ATLANTIC RICHFIELD DELAWARE CORPORATION, A CORP. OF DELAWARE reassignment ATLANTIC RICHFIELD DELAWARE CORPORATION, A CORP. OF DELAWARE MERGER (SEE DOCUMENT FOR DETAILS). JANUARY 12, 1977 DELAWARE Assignors: ANACONDA DELAWARE CORPORATION, A CORP. OF DELAWARE
Assigned to ANACONDA DELAWARE CORPORATION, A CORP. OF DELAWARE reassignment ANACONDA DELAWARE CORPORATION, A CORP. OF DELAWARE MERGER (SEE DOCUMENT FOR DETAILS). JANUARY 12, 1977, DELAWARE Assignors: ANACONDA COMPANY, THE, A CORP. OF MONTANA
Assigned to AMERICAN BRASS COMPANY, L.P., A DE LIMITED PARTNERSHIP reassignment AMERICAN BRASS COMPANY, L.P., A DE LIMITED PARTNERSHIP RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). SECURITY AGREEMENT RECORDED AT REEL 5327 FRAME 729 Assignors: NORSTAR BANK, NATIONAL ASSOCIATION
Assigned to AMERICAN BRASS COMPANY, L.P., A DE LIMITED PARTNERSHIP reassignment AMERICAN BRASS COMPANY, L.P., A DE LIMITED PARTNERSHIP RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). SECURITY AGREEMENT RECORDED AT REEL 4912 FRAMES 852-861 Assignors: HELLER FINANCIAL, INC.
Assigned to BANCBOSTON FINANCIAL COMPANY A MA CORPORATION reassignment BANCBOSTON FINANCIAL COMPANY A MA CORPORATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ANSONIA COPPER & BRASS, INC., A DE CORPORATION
Assigned to ANACONDA COMPANY, THE A CORP. OF MONTANA reassignment ANACONDA COMPANY, THE A CORP. OF MONTANA MERGER (SEE DOCUMENT FOR DETAILS). Assignors: ANACONDA ALUMINUM COMPANY A CORP. OF MONTANA, ANACONDA AMERICAN BRASS COMPANY A CORP. OF CONNECTICUT, ANACONDA WIRE AND CABLE COMPANY A CORP. OF DELAWARE (INTO), INTERNATIONAL SMELTING AND REFINING COMPANY A CORP. OF MONTANA
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Assigned to BANK OF BOSTON CONNECTICUT A CORP. OF CONNECTICUT reassignment BANK OF BOSTON CONNECTICUT A CORP. OF CONNECTICUT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ANSONIA COPPER & BRASS, INC. A CORP. OF DELAWARE
Assigned to ANSONIA COPPER & BRASS, INC. reassignment ANSONIA COPPER & BRASS, INC. TERM. OF SECURITY INTEREST Assignors: FLEET NATIONAL BANK F/K/A BANK OF BOSTON CT
Assigned to GENERAL ELECTRIC CAPITAL CORPORATION reassignment GENERAL ELECTRIC CAPITAL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ANSONIA COPPER & BRASS, INC.
Assigned to ANSONIA COPPER & BRASS, INC. reassignment ANSONIA COPPER & BRASS, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: FLEET NATIONAL BANK FKA A BANK OF BOSTON CT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/0815—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 structural sections, i.e. work of special cross-section, e.g. angle steel from flat-rolled products, e.g. by longitudinal shearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls

Definitions

  • the present invention is a method and apparatus for rolling a feed metal strip to a finished strip having substantial variations in thickness using a fourroll mill in which one or both strip-engaging work roll has a raised portion with each work roll being supported by a back-up roll complementarily notched as required to accomplish the simultaneous reduction and reforming of a plurality of portions of the feed strip.
  • a work-roll backup roll combination is used to allow the production of thinner cross'sections than heretofore attainable by the use of a pair of contoured work rolls alone.
  • Those skilled in the art will recognize the lower limit of thickness rolled as a function of the work roll diameter.
  • the use of a four-roll configuration provides a means of utilizing work rolls having smaller diameters, and thusly producing thinner material meeting close dimensional requirements.
  • FIG. I is a schematic view of the apparatus used in practicing this invention.
  • FIG. 2 is a sectional view along line 22 of FIG. 1;
  • FIG. 3 is a sectional view along line 3-3 of FIG. 1;
  • FIGS. 4, 5 and 6 are sectional views of alternative strip configurations suitable for processing by the method of the present invention.
  • FIG. 7 is a sectional view illustrating an alternative embodiment of the invention.
  • FIG. 1 includes payout reel 11 which pays out a feed strip 12.
  • the feed strip may be formed by welding longitudinally together two or more strips to provide a composite feed strip having a cross sectional configuration more closely approximating the desired shape but other techniques of forming the feed strip may be used. Alternatively, the strip may be formed by rolling, skiving, routing, swaging or partial machining.
  • FIG. 2 illustrates the sectional view of a welded composite feed strip having two sections, 13 and 14 joined by weld 15. A method of producing a longitudinally composite welded strip is disclosed in Lozano et al. U.S. application Ser. No. 169,203 filed Aug. 5, 1971, which application has been assigned to the assignee of the present application.
  • FIGS. 4-6 Other examples of feed strip configurations are shown in FIGS. 4-6. Since the amount of reduction and reforming of the strip is normally small, the finished or contoured shape has essentially the same appearance as the feed strip and is therefore not shown in the Figures.
  • Strip 12 is passed between strip-engaging or work rolls 16 and 17.
  • Work roll 16 has raised portion 18 which is accommodated by notched recess portion 22 of back-up roll 23.
  • Lower work roll 17 is shown having notched recess 21 but it may, if desired, have a uniform diameter provided its spacing from the upper work roll 16 is proper.
  • Back-up rolls 23 and 24 preferably have diameters substantially larger than work rolls 16 and 17 and through their size and position, serve to guide, steady and apply pressure to work rolls 16 and 17. While it is preferred that the back-up rolls are larger than the work rolls, this is not required for satisfactory operation.
  • the shape and length of the work rolls and backup rolls may be varied to process strips of varying width and shape such as those illustrated in FIGS. 4-6.
  • upper back-up roll 30 has a notched recess 31 to accommodate the raised portion 32 of upper work roll 33.
  • Strip 12a is shown being reformed by upper work roll 33 and lower work roll 34 which roll has a raised portion 35.
  • Lower back-up roll 36 has complementary recessed portion 37. It should be noted that raised portion 32 may in some applications not protrude beyond the surface of roll 33 and in such applications the back-up rolls would not need to be complementarily notched.
  • one or both of the work rolls may be notched, recessed or have raised portions and similarly the back-up rolls may be notched, recessed or have raised portions to accomplish reforming of strips of particular crosssectional configurations without interference between rolls while maintaining sufficient engagement of work and back-up rolls to provide the guiding, steadying and pressure application by the back-up rolls.
  • Accurate dimensioning can be obtained for all or some dimensions of the finished strip provided the raised portions 18, 32 and 35 of the work rolls and other work roll strip-engaging areas engage and control the movement of metal in the areas where such accurate dimensioning is desired.
  • a feed strip shaped as shown in FIG. 2 was processed using work rolls of about 1 V2 inch diameter. Two passes were used. The dimensions (see FIG. 2) as welded, after the first pass and after the second and final pass are set forth below:
  • Various driving arrangements for driving one or and accommodated raised portion spaced apart more of the rolls may be used. For example, one or one from the other; and both work rolls or one or both back-up rolls may be d. driving one or more of said rolls to cause the strip driven.
  • the technique of driving both work rolls is preto move through the work rolls and be accurately ferred. 5 reduced and reformed.
  • a method of producing an accurately dimensioned rately dimensioned finished strip having varying thickmetal strip which varies in thickness comprising ness comprising a. introducing a feed strip having substantially the a. a pair of work rolls mounted for rotation about same overall cross sectional configuration as that to substantially parallel axes with one such roll having of the finished strip to be formed between two work rolls mounted for rotation about substantially i. a raised portion; and parallel axis, at least one of which rolls has spacedii. two end portions on either side of the raised porapart portions of selected diameter and has an intion; termediate raised portion with a diameter greater b.
  • a notched back-up roll having a notched recess to than the selected diameter; accommodate the said raised portion which backb. supporting each work roll with a back-up roll up roll is positioned to engage the end portions of which back-up rolls are positioned to engage and the raised-portion roll to provide support for the apply pressure to the spaced-apart portions of the work roll and which notched recess is shaped to acwork rolls; commodate the raised portion without engagement c. employing back-up rolls to engage said work rolls with said portion; and

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

A method and apparatus for forming an accurately dimensioned metal strip having a plurality of thicknesses in which a feed strip is passed through a pair of work rolls, one or both of which has a raised portion for forming the desired shape during the reduction, wherein both work rolls are supported by back-up rolls which rotate in engagement with the work rolls with one or both of the back-up rolls having a notched recess to accommodate raised portions of the work roll.

Description

United States Patent Laigle et a1.
[ Sept. 10, 1974 METHOD AND APPARATUS FOR FORMING AN ACCURATELY DIMENSIONED METAL STRIP HAVING VARYING THICKNESS [75] Inventors: Roger E. Laigle, Torrington; Antone F. Rakich, Waterbury, both of Conn.; William J. Sivakoff, Buffalo, NY.
[73] Assignee: Anaconda American Brass Company, Waterbury, Conn.
[22] Filed: Aug. 30, 1972 [21] Appl. No.: 285,015
[52] U.S. Cl. 72/241, 72/366 [51] Int. Cl. B211) 29/00, 1321b 1/08 [58] Field of Search 72/241, 366, 224, 225,
[56] I References Cited UNlTED STATES PATENTS 1,900,032 3/1933 Worthington 72/247 X 1,915,084 6/1933 Bonsall 72/366 1,997,871 4/1935 Miller et a1 72/366 X 2,271,459 1/1942 McConnell 72/248 X 3,446,048 5/1969 Marcovitch... 72/88 3,488,989 l/1970 Rakich et a1.. 72/366 3,593,556 7/1971 Biain 72/241 3,765,213 10/1973 Townsend 72/249 Primary Examiner-Milton S. Mehr 1 ABSTRACT A method and apparatus for forming an accurately dimensioned metal strip having a plurality of thicknesses in which a feed strip is passed through a pair of work ro11s, one or both of which has a raised portion for forming the desired shape during the reduction, wherein both work rolls are supported by back-up rolls which rotate in engagement with the work rolls with one or both of the back-up rolls having a notched recess to accommodate raised portions of the work roll.
3 Claims, 7 Drawing Figures METHOD AND APPARATUS FOR FORMING AN ACCURATELY DIMENSIONED METAL STRIP HAVING VARYING THICKNESS BACKGROUND OF THE INVENTION Metal strips having non-rectangular cross-sections have been fullycontoured or shaped using machining operations to remove selected portions of the metal. These techniques require costly metal cutting operations resulting in substantial scrap losses. Rolling operations have also been employed to shape such metal strips; however, prior rolling techniques have failed to properly maintain the straightness of the strip and produce the required tolerances for certain applications.
Dual roll forming operations are disclosed in U.S. Pat. Nos. 3,488,988 and 3,488,989 assigned to the assignee of the present application but these dual rolling techniques are not suitable in certain circumstances to produce contour strips having dimensions within limited tolerance ranges.
SUMMARY OF THE INVENTION Broadly, the present invention is a method and apparatus for rolling a feed metal strip to a finished strip having substantial variations in thickness using a fourroll mill in which one or both strip-engaging work roll has a raised portion with each work roll being supported by a back-up roll complementarily notched as required to accomplish the simultaneous reduction and reforming of a plurality of portions of the feed strip.
It is a feature of the invention that a work-roll backup roll combination is used to allow the production of thinner cross'sections than heretofore attainable by the use of a pair of contoured work rolls alone. Those skilled in the art will recognize the lower limit of thickness rolled as a function of the work roll diameter. The use of a four-roll configuration provides a means of utilizing work rolls having smaller diameters, and thusly producing thinner material meeting close dimensional requirements.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a schematic view of the apparatus used in practicing this invention;
FIG. 2 is a sectional view along line 22 of FIG. 1;
FIG. 3 is a sectional view along line 3-3 of FIG. 1;
FIGS. 4, 5 and 6 are sectional views of alternative strip configurations suitable for processing by the method of the present invention;
FIG. 7 is a sectional view illustrating an alternative embodiment of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT In the drawings, FIG. 1 includes payout reel 11 which pays out a feed strip 12. The feed strip may be formed by welding longitudinally together two or more strips to provide a composite feed strip having a cross sectional configuration more closely approximating the desired shape but other techniques of forming the feed strip may be used. Alternatively, the strip may be formed by rolling, skiving, routing, swaging or partial machining. FIG. 2 illustrates the sectional view of a welded composite feed strip having two sections, 13 and 14 joined by weld 15. A method of producing a longitudinally composite welded strip is disclosed in Lozano et al. U.S. application Ser. No. 169,203 filed Aug. 5, 1971, which application has been assigned to the assignee of the present application.
Other examples of feed strip configurations are shown in FIGS. 4-6. Since the amount of reduction and reforming of the strip is normally small, the finished or contoured shape has essentially the same appearance as the feed strip and is therefore not shown in the Figures.
Strip 12 is passed between strip-engaging or work rolls 16 and 17. Work roll 16 has raised portion 18 which is accommodated by notched recess portion 22 of back-up roll 23. Lower work roll 17 is shown having notched recess 21 but it may, if desired, have a uniform diameter provided its spacing from the upper work roll 16 is proper.
Back-up rolls 23 and 24 preferably have diameters substantially larger than work rolls 16 and 17 and through their size and position, serve to guide, steady and apply pressure to work rolls 16 and 17. While it is preferred that the back-up rolls are larger than the work rolls, this is not required for satisfactory operation. The shape and length of the work rolls and backup rolls may be varied to process strips of varying width and shape such as those illustrated in FIGS. 4-6.
Turning to FIG. 7, upper back-up roll 30 has a notched recess 31 to accommodate the raised portion 32 of upper work roll 33. Strip 12a is shown being reformed by upper work roll 33 and lower work roll 34 which roll has a raised portion 35. Lower back-up roll 36 has complementary recessed portion 37. It should be noted that raised portion 32 may in some applications not protrude beyond the surface of roll 33 and in such applications the back-up rolls would not need to be complementarily notched.
Referring to FIGS. 3 and 7, it will be seen that one or both of the work rolls may be notched, recessed or have raised portions and similarly the back-up rolls may be notched, recessed or have raised portions to accomplish reforming of strips of particular crosssectional configurations without interference between rolls while maintaining sufficient engagement of work and back-up rolls to provide the guiding, steadying and pressure application by the back-up rolls.
Accurate dimensioning can be obtained for all or some dimensions of the finished strip provided the raised portions 18, 32 and 35 of the work rolls and other work roll strip-engaging areas engage and control the movement of metal in the areas where such accurate dimensioning is desired. As an example of the practice of the present method, a feed strip, shaped as shown in FIG. 2, was processed using work rolls of about 1 V2 inch diameter. Two passes were used. The dimensions (see FIG. 2) as welded, after the first pass and after the second and final pass are set forth below:
3 4 Various driving arrangements for driving one or and accommodated raised portion spaced apart more of the rolls may be used. For example, one or one from the other; and both work rolls or one or both back-up rolls may be d. driving one or more of said rolls to cause the strip driven. The technique of driving both work rolls is preto move through the work rolls and be accurately ferred. 5 reduced and reformed.
We claim: 2. Apparatus for rolling a feed strip to form an accu- 1. A method of producing an accurately dimensioned rately dimensioned finished strip having varying thickmetal strip which varies in thickness comprising ness comprising a. introducing a feed strip having substantially the a. a pair of work rolls mounted for rotation about same overall cross sectional configuration as that to substantially parallel axes with one such roll having of the finished strip to be formed between two work rolls mounted for rotation about substantially i. a raised portion; and parallel axis, at least one of which rolls has spacedii. two end portions on either side of the raised porapart portions of selected diameter and has an intion; termediate raised portion with a diameter greater b. a notched back-up roll having a notched recess to than the selected diameter; accommodate the said raised portion which backb. supporting each work roll with a back-up roll up roll is positioned to engage the end portions of which back-up rolls are positioned to engage and the raised-portion roll to provide support for the apply pressure to the spaced-apart portions of the work roll and which notched recess is shaped to acwork rolls; commodate the raised portion without engagement c. employing back-up rolls to engage said work rolls with said portion; and
through the end portions of the back-up rolls, said c. a back-up roll supporting the work roll adjacent back-up rolls having a notched recess intermediate the notched work roll. of said end portions to accommodate the raised 3. The apparatus of claim 2 in which selected rolls portion protruding beyond the surface defined by are driven. the end portions of a work roll, said notched recess

Claims (3)

1. A method of producing an accurately dimensioned metal strip which varies in thickness comprising a. introducing a feed strip having substantially the same overall cross sectional configuration as that of the finished strip to be formed between two work rolls mounted for rotation about substantially parallel axis, at least one of which rolls has spaced-apart portions of Selected diameter and has an intermediate raised portion with a diameter greater than the selected diameter; b. supporting each work roll with a back-up roll which back-up rolls are positioned to engage and apply pressure to the spaced-apart portions of the work rolls; c. employing back-up rolls to engage said work rolls through the end portions of the back-up rolls, said back-up rolls having a notched recess intermediate of said end portions to accommodate the raised portion protruding beyond the surface defined by the end portions of a work roll, said notched recess and accommodated raised portion spaced apart one from the other; and d. driving one or more of said rolls to cause the strip to move through the work rolls and be accurately reduced and reformed.
2. Apparatus for rolling a feed strip to form an accurately dimensioned finished strip having varying thickness comprising a. a pair of work rolls mounted for rotation about substantially parallel axes with one such roll having i. a raised portion; and ii. two end portions on either side of the raised portion; b. a notched back-up roll having a notched recess to accommodate the said raised portion which back-up roll is positioned to engage the end portions of the raised-portion roll to provide support for the work roll and which notched recess is shaped to accommodate the raised portion without engagement with said portion; and c. a back-up roll supporting the work roll adjacent the notched work roll.
3. The apparatus of claim 2 in which selected rolls are driven.
US00285015A 1972-08-30 1972-08-30 Method and apparatus for forming an accurately dimensioned metal strip having varying thickness Expired - Lifetime US3834207A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US00285015A US3834207A (en) 1972-08-30 1972-08-30 Method and apparatus for forming an accurately dimensioned metal strip having varying thickness
CA176,136A CA985072A (en) 1972-08-30 1973-07-11 Method and apparatus for forming an accurately dimensioned metal strip having varying thickness
GB3511573A GB1433515A (en) 1972-08-30 1973-07-24 Method of and apparatus for forming an accurately dimensioned metal strip
IT69263/73A IT991887B (en) 1972-08-30 1973-07-26 PROCEDURE AND DEVICE FOR THE FORMING OF AN ACCURATELY DIMENSIONED METAL STRIP OF VARIABLE THICKNESS
SE7310484A SE413851B (en) 1972-08-30 1973-07-30 APPARATUS FOR MANUFACTURING AN EXACT DIMENSIONED METAL BRAKE
BR6431/73A BR7306431D0 (en) 1972-08-30 1973-08-21 PROCESS AND APPARATUS FOR FORMING AN ACCURACY METAL STRIP WITH A VARIABLE THICKNESS
FR7331107A FR2197662B3 (en) 1972-08-30 1973-08-28
DE19732343579 DE2343579A1 (en) 1972-08-30 1973-08-29 METHOD AND DEVICE FOR FORMING A METAL STRIP WITH A LENGTH OF ITS WIDTH OF DIFFERENT THICKNESS
JP48096271A JPS4959064A (en) 1972-08-30 1973-08-29

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US00285015A US3834207A (en) 1972-08-30 1972-08-30 Method and apparatus for forming an accurately dimensioned metal strip having varying thickness

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JP (1) JPS4959064A (en)
BR (1) BR7306431D0 (en)
CA (1) CA985072A (en)
DE (1) DE2343579A1 (en)
FR (1) FR2197662B3 (en)
GB (1) GB1433515A (en)
IT (1) IT991887B (en)
SE (1) SE413851B (en)

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US4770018A (en) * 1986-03-12 1988-09-13 Donn Incorporated Method for producing cold roll-formed structures
US5070718A (en) * 1984-04-04 1991-12-10 Imi Titanium Limited Method and apparatus for the production of metal products
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JP6079344B2 (en) * 2013-03-18 2017-02-15 新日鐵住金株式会社 Apparatus and method for manufacturing a differential thickness steel sheet having a thickness difference in the sheet width direction
JP6089831B2 (en) * 2013-03-18 2017-03-08 新日鐵住金株式会社 Method for producing a differential thickness steel plate having a symmetrical thickness difference in the plate width direction
JP6102506B2 (en) * 2013-05-22 2017-03-29 新日鐵住金株式会社 Apparatus and method for manufacturing a differential thickness steel sheet having a thickness difference in the sheet width direction

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US1900032A (en) * 1930-10-25 1933-03-07 Worthington Warren Bar mill
US1915084A (en) * 1932-03-31 1933-06-20 P H Murphy Co Process of making sheets
US1997871A (en) * 1930-12-03 1935-04-16 George C Miller Method of forming clevises
US2271459A (en) * 1939-06-14 1942-01-27 Mackintosh Hemphill Company Rolling mill
US3446048A (en) * 1966-01-14 1969-05-27 Rotary Profile Anstalt Profiling of annular workpieces
US3488989A (en) * 1967-09-27 1970-01-13 Anaconda American Brass Co Method of producing dual gauge strip
US3593556A (en) * 1968-04-12 1971-07-20 Siderurgie Fse Inst Rech Rolling mill with prestressed housing
US3765213A (en) * 1970-12-17 1973-10-16 British Iron Steel Research Rolling mills

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Publication number Priority date Publication date Assignee Title
US1900032A (en) * 1930-10-25 1933-03-07 Worthington Warren Bar mill
US1997871A (en) * 1930-12-03 1935-04-16 George C Miller Method of forming clevises
US1915084A (en) * 1932-03-31 1933-06-20 P H Murphy Co Process of making sheets
US2271459A (en) * 1939-06-14 1942-01-27 Mackintosh Hemphill Company Rolling mill
US3446048A (en) * 1966-01-14 1969-05-27 Rotary Profile Anstalt Profiling of annular workpieces
US3488989A (en) * 1967-09-27 1970-01-13 Anaconda American Brass Co Method of producing dual gauge strip
US3593556A (en) * 1968-04-12 1971-07-20 Siderurgie Fse Inst Rech Rolling mill with prestressed housing
US3765213A (en) * 1970-12-17 1973-10-16 British Iron Steel Research Rolling mills

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5070718A (en) * 1984-04-04 1991-12-10 Imi Titanium Limited Method and apparatus for the production of metal products
US4770018A (en) * 1986-03-12 1988-09-13 Donn Incorporated Method for producing cold roll-formed structures
WO2011110421A3 (en) * 2010-03-08 2012-04-19 Siemens Aktiengesellschaft External rotor motor with a varying armature profile
RU2501622C1 (en) * 2012-06-05 2013-12-20 Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") Method of making constant-width spring blanks with elements of variable- and constant depth

Also Published As

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BR7306431D0 (en) 1974-06-27
DE2343579A1 (en) 1974-03-07
SE413851B (en) 1980-06-30
CA985072A (en) 1976-03-09
GB1433515A (en) 1976-04-28
IT991887B (en) 1975-08-30
FR2197662A1 (en) 1974-03-29
FR2197662B3 (en) 1976-07-30
JPS4959064A (en) 1974-06-07

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