US3850019A - Method of producing a metal strip including a longitudinal channel by roll-form reduction of a multi-gage strip - Google Patents

Method of producing a metal strip including a longitudinal channel by roll-form reduction of a multi-gage strip Download PDF

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Publication number
US3850019A
US3850019A US00310158A US31015872A US3850019A US 3850019 A US3850019 A US 3850019A US 00310158 A US00310158 A US 00310158A US 31015872 A US31015872 A US 31015872A US 3850019 A US3850019 A US 3850019A
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strip
gage
rolls
thickness
pair
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US00310158A
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R Bray
C Tapley
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General Electric Co
Aurubis Buffalo Inc
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Anaconda Co
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Priority to US00310158A priority Critical patent/US3850019A/en
Priority to CA186,807A priority patent/CA984187A/en
Priority to BR9331/73A priority patent/BR7309331D0/en
Priority to DE2359308A priority patent/DE2359308A1/en
Priority to NL7316264A priority patent/NL7316264A/xx
Priority to CH1671773A priority patent/CH558218A/en
Priority to BE138268A priority patent/BE807924A/en
Priority to LU68882A priority patent/LU68882A1/xx
Priority to JP48132802A priority patent/JPS49135858A/ja
Priority to FR7342348A priority patent/FR2207767B3/fr
Priority to IT70495/73A priority patent/IT999838B/en
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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.
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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
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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 AMERICAN BRASS COMPANY, L.P., A DELAWARE LIMITED PARTNERSHIP reassignment AMERICAN BRASS COMPANY, L.P., A DELAWARE LIMITED PARTNERSHIP RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). RELEASE OF SECURITY INTEREST RECORDS AT REEL 4510 FRAMES 187-203 Assignors: CONTINENTAL BANK OF CANADA, NEW YORK BRANCH
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 4510 FRAMES 187-203 Assignors: HELLER FINANCIAL, INC. AS SUCCESSOR BY MERGER TO HELLER FINANCIAL CENTRAL, INC.
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 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 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 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. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: FLEET NATIONAL BANK FKA A BANK OF BOSTON CT
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.
Expired - Lifetime legal-status Critical Current

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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
    • B21B1/08—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
    • B21B1/085—Rail sections
    • B21B1/0855—Rerolling or processing worn or discarded rail sections
    • 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
    • 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
    • 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
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49616—Structural member making
    • Y10T29/49623—Static structure, e.g., a building component
    • Y10T29/49625—Openwork, e.g., a truss, joist, frame, lattice-type or box beam
    • Y10T29/49627—Frame component

Definitions

  • a drawback of the extrusion process is that the types of cross-sectional areas that can be satisfactorily produced are limited.
  • a prior proposal has been made to form strips with varying thickness and thereafter bend the strips into enclosed beams (see US. Pat. No. 2,085,829 issued July 6, 1937); however, this proposal relies solely on the use of a bending operation to form the final product and is therefore unsuited for forming many types of shapes.
  • Products may also be formed using drawing, but this operation is also limited in its application.
  • the present method comprises rolling metal to produce a multi-gage strip having a thick portion and an adjacent thin portion, thereafter roll-form reducing the strip which roll-form reduction includes substantially changing the shape and substantially reducing the cross-sectional area of the strip.
  • the strip is shaped by rolling to provide a strip having selected metal distribution such that the strip is formed to the desired shape having desired dimensional tolerances without need for pointing, drawing or annealing.
  • the finished strip has a rolled surface unlike extruded or drawn shapes.
  • FIG. I is a side elevation view of the strip roll-form reduction apparatus
  • FIG. 2 is an expanded sectional view along line 22 of FIG. 1;
  • FIG. 3 is a partial expanded sectional view along line 3-3 of FIG. 1'
  • FIG. 4 is an expanded sectional view along line 4-4 of FIG. 1.
  • FIGS. 5 through 8 are cross-sectional views of alternatively shaped strips which are suitable for use in the reducing operation of the present invention and FIG. 5a through 8a illustrate the cross-sections of the strip after such roll-form reduction.
  • a preferred embodiment of the present method is shown in which a strip 1 has been rolled by any suitable means to provide a crosssectional configuration (see FIG. 2) which includes thick portion 3 and two adjacent thin portions 5 and 7. Thick portion 3, including that area delineated by dimensions A, B, C and D, serves to provide adequate material in corner areas as roll-form reduction is accomplished.
  • strip 1 may have a central thick portion 3' with one adjacent portion of less thickness 5' and another adjacent portion 6 thicker than the central portion (see FIG. 5).
  • the strip is then fed continuously between work rolls 8 and 10 which simultaneously perform two functions. First, they reshape the strip about an axis parallel to the longitudinal axis of the strip and second, they reduce the cross-sectional area of the strip. Metal movement in various areas, for example, in formed corner areas, such as areas designated 11 in FIG. 3, permit formation of completed strips having the cross-sectional shapes shown in the drawings.
  • the end portions of the multilayer strip are often reshaped by roll action in such a manner that they are generally bent or rotated away from the center of the thick portions of the strips thus providing substantial amounts of material available for movement when forces of tension are applied.
  • material supply area 12 is fed against a roll 10 whose shape has been modified to produce the shape shown in FIG. 6a.
  • Roll 8 (also suitably shaped), in combined action with roll 10, moves the end or side areas of the strip away from area 12 to form the final strip (FIG. 6a).
  • middle and adjacent material areas are designated 12, 13 and 14, respectively.
  • the amount of cross-sectional area reduction during the roll-form reduction step is substantial but not extensive.
  • the amount of cross-sectional area reduction is held down to the amount required to accommodate for the metal movement associated with the reorganization and reshaping of portions of the strip as shown in the drawings and to the amount required to accomplish reshaping to desired tolerances. Examples of the amount of cross-sectional reduction are found in runs made where the weight per linear inch of the strip before and after roll-form reduction was measured.
  • a multi-gage copper strip having the shape shown in FIG. 2 weighed 15.4 g/inch before final processing and 14.23 g/inch after processing to the shape shown in FIG. 4. This was a reduction in cross-section area of 7.6 percent.
  • FIG. 6 Another copper strip having the shape shown in FIG. 6 was similarly weighed before and after its reduction to a FIG. 6(a) shape. A reduction from 8.69 g/inch to 7.59 g/inch was noted. This is a reduction of 12.7 percent.
  • FIGS. 5, 7 and 8 the sectional views of the strip are shown oriented in positions similar to that of FIG. 2.
  • suitable shaped rolls 8 and 10 the shape of FIGS. 5a. 7a and 8a are obtained by roll-form reduction.
  • roll 10 causes the end portions to be moved upward, as shown in the drawings, and to be reformed in such a way that a channel is formed in the strip.
  • roll-form reduction as used herein describes the action of rolls which substantially change the shape and, reduce the cross-sectional area of the strip a substantial amount as required to obtain dimensional accuracy of the finished strip.
  • the change in cross-sectional area is not extensive in that it is limited to that necessary to move sufficient material to accomplish dimensional accuracy in the final strip which accuracy for shapes having the cross-sectional areas herein described is plus or minus a few thousands of an inch.
  • the dimensional accuracy obtainable with proper roll design, roll positioning and initial formation of multi-gage strip of proper cross-section is that presently required by industry for metal strips of the cross-sectional areas herein described.
  • a method of continuously forming a metal strip including a channel portion comprising 1. rolling a metal strip to varying thicknesses which sectional area of the strip to the extent required to accomplish an acceptable degree of dimensional accuracy in the formed strip whereby a formed strip having a channel configuration is produced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

A method of continuously producing a metal strip including a longitudinal channel comprising the steps of rolling a strip of metal to varying thicknesses in which a thick portion is positioned adjacent to a thin portion, and thereafter roll form reducing the strip to substantially change its shape and to reduce substantially the strips'' cross-sectional area.

Description

Umted States Patent 1191 1 11-11 3,850,019 Bray et al. 1 Nov. 26, 1974 [54] METHOD OF PRODUCING A METAL STRIP 674,652 5/1901 Mergler et al. 72/365 INCLUDING A LONGITUDINAL CHANNEL l 33: 2; 3; g g; 354222 o s BY ROLL'FORM REDUCTION OF A 1,656,846 1/1928 Witherow 72/366 MULTl-GAGE STRIP 1,915,084 6/1933 Bonsai] 72/366 [75] Inventors: Robert S. Bray; Claude D. Tapley, 3; g 2 3 both of h hi Conn. ape 3,488,988 1/1970 Laigle et a1. 72/366 [73] Assignee: Anaconda American Brass C0., 3,630,059 1 Henkel 2/199 X W t rb ry C 3,808,863 5/1974 Marcovitch 72/199 [22] Flled: 1972 Primary Examiner-C. W. Lanham [21] Appl, N0.: 310,158 Assistant EXaminer-D, C. Reiley, III
[52] US. Cl 72/199, 29/155 R, 72/366 [57] I ABSTRACT [51] Int. Cl ..B2lb 1/12 A h d f l d l 58 Field of Search 72/365, 366; 29/155 0, 0 99 Y r? meta smp 29/155 72/199 cludmg a 10ng1tud1na1 channel compnsmg the steps of rolling a strip of metal to varying thicknesses in which 56] References Cited a tlgicllj portt ion/is ltlaci sitionetcii acijacergt to a thin pobrtion,
an t erea ter r0 orm re uclng t e stnp to su stan- UNITED STATES PATENTS tially change its shape and to reduce substantially the glarlke 72432686? trips crossectional area ay or et a 450,330 4/1891 Large et a1 72/365 X 4 Claims, 12 Drawing Figures METHOD OF PRODUCING A METAL STRIP INCLUDING A LONGITUDINAL CHANNEL BY ROLL-FORM REDUCTION OF A MULTI-GAGE STRIP BACKGROUND OF THE INVENTION The formation of a metal strip having a multi-gage section has previously been accomplished using extrusion or drawing techniques. A drawback of the extrusion process is that the types of cross-sectional areas that can be satisfactorily produced are limited. A prior proposal has been made to form strips with varying thickness and thereafter bend the strips into enclosed beams (see US. Pat. No. 2,085,829 issued July 6, 1937); however, this proposal relies solely on the use of a bending operation to form the final product and is therefore unsuited for forming many types of shapes.
Products may also be formed using drawing, but this operation is also limited in its application.
SUMMARY OF THE INVENTION It has now been found that by first forming a multigage strip and then using a localized reduction operation in combination with forming techniques that markedly improved results over a wide range of products, shapes and sizes can be attained.
Broadly, the present method comprises rolling metal to produce a multi-gage strip having a thick portion and an adjacent thin portion, thereafter roll-form reducing the strip which roll-form reduction includes substantially changing the shape and substantially reducing the cross-sectional area of the strip. I It is a feature of the method that the strip is shaped by rolling to provide a strip having selected metal distribution such that the strip is formed to the desired shape having desired dimensional tolerances without need for pointing, drawing or annealing.
It is also a feature that the finished strip has a rolled surface unlike extruded or drawn shapes.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a side elevation view of the strip roll-form reduction apparatus;
FIG. 2 is an expanded sectional view along line 22 of FIG. 1;
FIG. 3 is a partial expanded sectional view along line 3-3 of FIG. 1',
FIG. 4 is an expanded sectional view along line 4-4 of FIG. 1.
FIGS. 5 through 8 are cross-sectional views of alternatively shaped strips which are suitable for use in the reducing operation of the present invention and FIG. 5a through 8a illustrate the cross-sections of the strip after such roll-form reduction.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIGS. 1-4, a preferred embodiment of the present method is shown in which a strip 1 has been rolled by any suitable means to provide a crosssectional configuration (see FIG. 2) which includes thick portion 3 and two adjacent thin portions 5 and 7. Thick portion 3, including that area delineated by dimensions A, B, C and D, serves to provide adequate material in corner areas as roll-form reduction is accomplished. Alternatively, strip 1 may have a central thick portion 3' with one adjacent portion of less thickness 5' and another adjacent portion 6 thicker than the central portion (see FIG. 5).
The strip is then fed continuously between work rolls 8 and 10 which simultaneously perform two functions. First, they reshape the strip about an axis parallel to the longitudinal axis of the strip and second, they reduce the cross-sectional area of the strip. Metal movement in various areas, for example, in formed corner areas, such as areas designated 11 in FIG. 3, permit formation of completed strips having the cross-sectional shapes shown in the drawings.
In the roll-form reduction step of the present invention the end portions of the multilayer strip (the left and right hand portions of the sectional views in the drawings) are often reshaped by roll action in such a manner that they are generally bent or rotated away from the center of the thick portions of the strips thus providing substantial amounts of material available for movement when forces of tension are applied. Referring to FIGS. 6 and 6a, material supply area 12 is fed against a roll 10 whose shape has been modified to produce the shape shown in FIG. 6a. Roll 8 (also suitably shaped), in combined action with roll 10, moves the end or side areas of the strip away from area 12 to form the final strip (FIG. 6a). In FIGS. 68, middle and adjacent material areas are designated 12, 13 and 14, respectively.
The amount of cross-sectional area reduction during the roll-form reduction step is substantial but not extensive. The amount of cross-sectional area reduction is held down to the amount required to accommodate for the metal movement associated with the reorganization and reshaping of portions of the strip as shown in the drawings and to the amount required to accomplish reshaping to desired tolerances. Examples of the amount of cross-sectional reduction are found in runs made where the weight per linear inch of the strip before and after roll-form reduction was measured. A multi-gage copper strip having the shape shown in FIG. 2 weighed 15.4 g/inch before final processing and 14.23 g/inch after processing to the shape shown in FIG. 4. This was a reduction in cross-section area of 7.6 percent.
Another copper strip having the shape shown in FIG. 6 was similarly weighed before and after its reduction to a FIG. 6(a) shape. A reduction from 8.69 g/inch to 7.59 g/inch was noted. This is a reduction of 12.7 percent.
Referring to FIGS. 5, 7 and 8, the sectional views of the strip are shown oriented in positions similar to that of FIG. 2. Using suitable shaped rolls 8 and 10, the shape of FIGS. 5a. 7a and 8a are obtained by roll-form reduction. In each case roll 10 causes the end portions to be moved upward, as shown in the drawings, and to be reformed in such a way that a channel is formed in the strip.
The term roll-form reduction as used herein describes the action of rolls which substantially change the shape and, reduce the cross-sectional area of the strip a substantial amount as required to obtain dimensional accuracy of the finished strip. The change in cross-sectional area is not extensive in that it is limited to that necessary to move sufficient material to accomplish dimensional accuracy in the final strip which accuracy for shapes having the cross-sectional areas herein described is plus or minus a few thousands of an inch. The dimensional accuracy obtainable with proper roll design, roll positioning and initial formation of multi-gage strip of proper cross-section is that presently required by industry for metal strips of the cross-sectional areas herein described.
We claim:
1. A method of continuously forming a metal strip including a channel portion comprising 1. rolling a metal strip to varying thicknesses which sectional area of the strip to the extent required to accomplish an acceptable degree of dimensional accuracy in the formed strip whereby a formed strip having a channel configuration is produced.
2. The method of claim 1 in which the multi-gage strip prior to passing it between said pair of rolls has a thickness in its center portion which is less than its thickness on either side of the center portion.
3. The method of claim 1 in which the multi-gage strip prior to passing it between said pair of rolls has a thickness in its center portion which is greater than its thickness on either side of the center portion.
4. The method of claim 1 in which the initial rolling step forms a strip having two spaced-apart areas of greater thickness than the remainder of the strip which areas form the outside corners of the channel portion formed during subsequent passage of the strip between said pair of rolls.

Claims (5)

1. A method of continuously forming a metal strip including a chaNnel portion comprising 1. rolling a metal strip to varying thicknesses which rolled multi-gage strip has when viewed in a cross section taken perpendicular to the longitudinal axis of the strip portions of substantially different thicknesses and thereafter; 2. passing the multi-gage strip between a pair of rolls shaped and positioned with respect to one another to reshape the strip through rotating portions of the strip about an axis parallel to the longitudinal axis of the strip so that at least two of said portions are rotated a sufficient distance to form said channel portion and to simultaneously reduce the crosssectional area of the strip to the extent required to accomplish an acceptable degree of dimensional accuracy in the formed strip whereby a formed strip having a channel configuration is produced.
2. passing the multi-gage strip between a pair of rolls shaped and positioned with respect to one another to reshape the strip through rotating portions of the strip about an axis parallel to the longitudinal axis of the strip so that at least two of said portions are rotated a sufficient distance to form said channel portion and to simultaneously reduce the cross-sectional area of the strip to the extent required to accomplish an acceptable degree of dimensional accuracy in the formed strip whereby a formed strip having a channel configuration is produced.
2. The method of claim 1 in which the multi-gage strip prior to passing it between said pair of rolls has a thickness in its center portion which is less than its thickness on either side of the center portion.
3. The method of claim 1 in which the multi-gage strip prior to passing it between said pair of rolls has a thickness in its center portion which is greater than its thickness on either side of the center portion.
4. The method of claim 1 in which the initial rolling step forms a strip having two spaced-apart areas of greater thickness than the remainder of the strip which areas form the outside corners of the channel portion formed during subsequent passage of the strip between said pair of rolls.
US00310158A 1972-11-28 1972-11-28 Method of producing a metal strip including a longitudinal channel by roll-form reduction of a multi-gage strip Expired - Lifetime US3850019A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US00310158A US3850019A (en) 1972-11-28 1972-11-28 Method of producing a metal strip including a longitudinal channel by roll-form reduction of a multi-gage strip
CA186,807A CA984187A (en) 1972-11-28 1973-11-27 Method of producing a metal strip including a longitudinal channel by roll-form reduction of a multi-gage strip
FR7342348A FR2207767B3 (en) 1972-11-28 1973-11-28
NL7316264A NL7316264A (en) 1972-11-28 1973-11-28
CH1671773A CH558218A (en) 1972-11-28 1973-11-28 PROCESS FOR CONTINUOUS MANUFACTURING OF A METAL STRIP WITH U-PROFILE.
BE138268A BE807924A (en) 1972-11-28 1973-11-28 PROCESS FOR CONTINUOUSLY PROFILING A BAND OF METAL
LU68882A LU68882A1 (en) 1972-11-28 1973-11-28
JP48132802A JPS49135858A (en) 1972-11-28 1973-11-28
BR9331/73A BR7309331D0 (en) 1972-11-28 1973-11-28 A PROCESS OF COMPLETELY CONFORMING A METAL STRIP INCLUDING A U-PART
IT70495/73A IT999838B (en) 1972-11-28 1973-11-28 PROCEDURE FOR THE MANUFACTURE OF METAL PROFILES WITH LONGITUDINAL CHANNEL BY LAMINATION
DE2359308A DE2359308A1 (en) 1972-11-28 1973-11-28 METHOD OF MAKING A METAL STRIP WITH A LONGITUDINAL CHANNEL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00310158A US3850019A (en) 1972-11-28 1972-11-28 Method of producing a metal strip including a longitudinal channel by roll-form reduction of a multi-gage strip

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US3850019A true US3850019A (en) 1974-11-26

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US (1) US3850019A (en)
JP (1) JPS49135858A (en)
BE (1) BE807924A (en)
BR (1) BR7309331D0 (en)
CA (1) CA984187A (en)
CH (1) CH558218A (en)
DE (1) DE2359308A1 (en)
FR (1) FR2207767B3 (en)
IT (1) IT999838B (en)
LU (1) LU68882A1 (en)
NL (1) NL7316264A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5241735A (en) * 1991-06-10 1993-09-07 Emerson Electric Co. Radial saw arm construction
US20090205390A1 (en) * 2008-02-01 2009-08-20 Fritz Hermann Cold rolling method for manufacturing a profile
EP2959985A3 (en) * 2014-06-27 2016-01-06 Bilstein GmbH & Co. KG Profiled beam with increased flexural strength made of cold strip and method for producing same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2813636C3 (en) * 1978-03-30 1980-10-30 Theodor Wuppermann Gmbh, 5090 Leverkusen Process and device for the production of profiles made of metal, primarily steel profiles
SE8102351L (en) * 1981-04-13 1982-10-14 Plannja Ab PROCEDURE FOR ASTADKOMMA BOCKING
DE102005044423A1 (en) * 2005-09-16 2007-03-22 Blanco Gmbh + Co Kg Method for producing a fold on a sheet metal element

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US450330A (en) * 1891-04-14 Making rolled metal rods or bars
US674652A (en) * 1900-11-24 1901-05-21 Peter Mergler Process of rolling metal bars.
US983601A (en) * 1909-10-04 1911-02-07 Hugo Sack Method of forming i-bars with taperless flanges.
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US5241735A (en) * 1991-06-10 1993-09-07 Emerson Electric Co. Radial saw arm construction
US20090205390A1 (en) * 2008-02-01 2009-08-20 Fritz Hermann Cold rolling method for manufacturing a profile
US8485012B2 (en) * 2008-02-01 2013-07-16 Hilti Aktiengesellschaft Cold rolling method for manufacturing a profile
EP2959985A3 (en) * 2014-06-27 2016-01-06 Bilstein GmbH & Co. KG Profiled beam with increased flexural strength made of cold strip and method for producing same

Also Published As

Publication number Publication date
LU68882A1 (en) 1974-06-21
CA984187A (en) 1976-02-24
DE2359308A1 (en) 1974-05-30
IT999838B (en) 1976-03-10
FR2207767A1 (en) 1974-06-21
CH558218A (en) 1975-01-31
NL7316264A (en) 1974-05-30
BR7309331D0 (en) 1974-08-29
JPS49135858A (en) 1974-12-27
FR2207767B3 (en) 1976-10-08
BE807924A (en) 1974-05-28

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