US2193737A - Method of rolling profiled sections from sheet metal - Google Patents

Method of rolling profiled sections from sheet metal Download PDF

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Publication number
US2193737A
US2193737A US149220A US14922037A US2193737A US 2193737 A US2193737 A US 2193737A US 149220 A US149220 A US 149220A US 14922037 A US14922037 A US 14922037A US 2193737 A US2193737 A US 2193737A
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United States
Prior art keywords
section
metal
bend
strip
rolling
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Expired - Lifetime
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US149220A
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English (en)
Inventor
Penkala Emil
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Metal Trim Ltd
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Metal Trim Ltd
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Publication date
Application filed by Metal Trim Ltd filed Critical Metal Trim Ltd
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Publication of US2193737A publication Critical patent/US2193737A/en
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    • 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
    • B21B1/09—L-sections
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S72/00—Metal deforming
    • Y10S72/701—Preventing distortion

Definitions

  • This invention relates to an improved method and apparatus for the production of profiled sections by rolling from sheet metal.
  • the bend or corner is the weakest 5 part of a profiled section formed from sheet metal by rolling owing to the fact that the lateral stretching of the metal at the bend, which stretching is communicated to some extent to the adjacent walls or flanks of the section, re-
  • the present invention has for its object to enable profiled sections to be produced wherein the bend or corner of the section is at least as strong as the remainder of the section, and,
  • the invention also has for its object to enable profiled sections to be produced with bends or corners which are sharp or angular externally or with bends, corners and/or edges rein- 88 forced by flanges, beads or other forms.
  • the improved method of forming a profiled section by rolling from sheet metal includes the step of upsetting the metal in a lateral direction or dia rections to form a part or parts of increased thickness and of any desired shape whereby.
  • the profile produced by subsequent bending of the material may be modified and reinforced.
  • the parts at which the metal is to be bent may be thickened up or reinforced in such manner that when bent up the corner of the section is of sharp angular form externaly. or other desired shape.
  • the marginal edges of the section may be beaded, flanged or otherwise provided with enlargements.
  • the invention includes a method of producing profiled sections by rolling from sheet metal wherein, prior to the forl mation, or to a stage in the formation, of a bend other projection or thickening for the purpose diagrammatic drawing, in whichor corner in the section, the metal thereof is upset so as to flow towards the position of the bend or corner while passing between rollers shaped to prod... e a rib or angular or other projection or thickening at the position of the bend or corner.
  • the extent of the upsetting action and the shape and size of the projection or thick ening thereby produced may be such that when the section is bent to its final shape the bend is of true angular formation externally with- 10 out any reduction in thickness of the section at any point or points, with the result that the bend actually will be the strongest part of the section.
  • the bend may be 15 formed with an external reinforcing rib or even with an externally projecting flange.
  • the step of upsetting the metal may be effected in the cold, but in the case of steel, the invention includes the step of local heating of the strip material at and/or adjacent the parts to be upset, such heating preferably being effected immediately prior to the upsetting operation, it being understood that the material passes continuously from the upsetting rollers to the profiling rollers.
  • two or more upsetting operations if necessary in conjunction with two or more heating operations, may take place at 80 various stages in the production of a profiled section.
  • the formation of the part or parts of increased thickness may be effected by the use of rollers adapted to exert an upsetting pressure on the appropriate parts of the metal while confining the edges of the same so that the metal is constrained to flow towards a position or positions *at which at least one of the rollers is grooved or relieved to allow of the formation of a rib or w described.
  • FIG. 1 is a diagram illustrating the inherent tendency to thinning of the metal where a bend is formed
  • Figure 2 is a similar view illustrating the manner in which a sharp angled section is produced 50 according to the invention.
  • Figures 3 to 6 are cross-sectional views illustrating the method according to the invention as applied to the production of a sharp angled L section; u
  • Figure '7 is a cross-sectional view illustrating the manner in which a sharp angled U section may be formed.
  • Figures 8 and 9 are cross-sectional views S110W- ing examples of modified sections capable of being produced according to the invention.
  • the metal strip l is first formed with a suitably shaped projection portion lb so that when the strip is bent up to form the angle la the thickness of the metal at the bend actually is greater than the thickness of the wall of the section and obviously the projection lb may be shaped to secure a sharp external angle, as shown.
  • the preliminary formation of the projection lb may be of such crosssectional area as to obviate any necessity for effecting a flow of the metal of the section walls towards the position of the bend, it is clear that the profiling operation may be effected under considerably less rolling pressure than heretofore.
  • the improved method according to the invention consists in first subjecting the metal strip l to an upsetting operation, preferably with the prior application of localised heating so as to form the projecting rib lb, and thereafter passing the strip between profiling rollers by which it is bent up to the desired profiled form, the profiling-operation preferably being carried out in accordance with my copending application Serial No. 149,217, filed June 19, 1937, so as to avoid any stretching of the edges of the strip and also to localise the application of the rolling pressure to the parts of the section which are not stretched or subject to stretching either in a lateral or longitudinal direction during the profiling operation.
  • the strip l is first passed between electrodes 2 or other heating means whereby the portion of the strip at which the bend is to be formed is locally heated to facilitate the upsetting operation which, as shown in Figure 4, may be effected by passing the strip l between rollers 3 and 4 arranged to exert an upsetting pressure, the roller 4 having flanges 4a serving to confine the edges of the strip whereby the metal is caused to flow in the direction of the arrows and thereby upset the locally heated metal at the centre to form the projecting rib lb.
  • profiling rollers 5, 6 and l, 8 which preferably are profiled according to the teaching of said copending application so that the rolling pressure is localised at the parts a at 'eteral or longitudinal stretchthis purpose the upper rollers so that the outer parts thereof diverge out cily in relation to the corresponding profiled faces of the respective lower rollers G and 8 so as to form an angle of 3 degrees therewith, while the lower rollers 6 and 8 are formed with centrally disposed circumferential recesses 6a, 8a respectively.
  • the profiled section may be finished by passing between calibrating rollers the profiles of which corre- 1sfond exactly to the profiles of the finished sec-
  • the profiled section may be finished by passing between calibrating rollers the profiles of which corre- 1sfond exactly to the profiles of the finished sec-
  • a U section may be produced in a similar manner by first forming two projecting ribs lb and then profiling the strip in the manner before described Obviously, any other profiled section may be produced in accordance with the invention.
  • the projecting rib lb may be otherwise shaped, for example, to produce a bulbous enlargement, such as shown at id in Figure 8.
  • the invention is applicable for the production oi. sections having beadings or flanges le at the which there is m ing tendency.
  • two or more upsetting operations may take place simultaneously or in series.
  • a method of preventing metal strips of substantially uniform thickness from having undesirably weak zones when rolled from substantially fiat material into structural members of .altered cross-sectional shape comprising the steps of locally heating the strip in a longitudinal zone where the corner, enlargement or re-enforcement is to be formed, and immediately subjecting the strip to rolling while exerting pressure on the unheated portions of the strip towards the locally heated zone whereby the material of said locally heated zone is upset.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US149220A 1937-01-26 1937-06-19 Method of rolling profiled sections from sheet metal Expired - Lifetime US2193737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2193737X 1937-01-26

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US2193737A true US2193737A (en) 1940-03-12

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US (1) US2193737A (enrdf_load_stackoverflow)
BE (1) BE422326A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466907A (en) * 1966-01-03 1969-09-16 Lincoln Electric Co Metal ribbon,welding electrodes and method and apparatus for forming same
US3665881A (en) * 1970-07-27 1972-05-30 Amf Inc Spring blades for contact arms and the method for making the same
US3807214A (en) * 1972-05-01 1974-04-30 S Hornung Bending machine
FR2318701A1 (fr) * 1975-07-19 1977-02-18 Stihl Maschf Andreas Procede de fabrication de dents pour chaines a scier
FR2425282A1 (fr) * 1978-05-08 1979-12-07 Arbed Procede de laminage de sections angulaires
US4276763A (en) * 1978-08-17 1981-07-07 Arbed, Acieries Reunies De Burbach-Eich-Dudelange, Societe Anonyme Method of rolling angular profiles having flanges of equal length
US4433565A (en) 1978-03-30 1984-02-28 Theodor Wuppermann Gmbh Method of and apparatus for the manufacturing of metal profile members, especially steel profile members
US4578979A (en) * 1982-10-27 1986-04-01 Hitachi Cables, Ltd. Method of producing a strip having a non-uniform cross section by a rolling process
FR2604928A1 (fr) * 1986-10-09 1988-04-15 Arbed Procede et installation de laminage des profiles d'acier en forme d'u
US6705145B1 (en) * 1999-11-19 2004-03-16 Matsushita Electric Industrial Co., Ltd. Method of processing bent and deformed portion of metal material
US20160271663A1 (en) * 2015-03-19 2016-09-22 Ford Global Technologies, Llc Method for producing a structural element

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466907A (en) * 1966-01-03 1969-09-16 Lincoln Electric Co Metal ribbon,welding electrodes and method and apparatus for forming same
US3665881A (en) * 1970-07-27 1972-05-30 Amf Inc Spring blades for contact arms and the method for making the same
US3807214A (en) * 1972-05-01 1974-04-30 S Hornung Bending machine
FR2318701A1 (fr) * 1975-07-19 1977-02-18 Stihl Maschf Andreas Procede de fabrication de dents pour chaines a scier
US4433565A (en) 1978-03-30 1984-02-28 Theodor Wuppermann Gmbh Method of and apparatus for the manufacturing of metal profile members, especially steel profile members
FR2425282A1 (fr) * 1978-05-08 1979-12-07 Arbed Procede de laminage de sections angulaires
US4276763A (en) * 1978-08-17 1981-07-07 Arbed, Acieries Reunies De Burbach-Eich-Dudelange, Societe Anonyme Method of rolling angular profiles having flanges of equal length
US4578979A (en) * 1982-10-27 1986-04-01 Hitachi Cables, Ltd. Method of producing a strip having a non-uniform cross section by a rolling process
FR2604928A1 (fr) * 1986-10-09 1988-04-15 Arbed Procede et installation de laminage des profiles d'acier en forme d'u
BE1000693A5 (fr) * 1986-10-09 1989-03-14 Arbed Procede et installation de laminage des profiles d'acier en forme d'u.
US6705145B1 (en) * 1999-11-19 2004-03-16 Matsushita Electric Industrial Co., Ltd. Method of processing bent and deformed portion of metal material
US20160271663A1 (en) * 2015-03-19 2016-09-22 Ford Global Technologies, Llc Method for producing a structural element
US10518306B2 (en) * 2015-03-19 2019-12-31 Ford Global Technologies, Llc Method for producing a structural element

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Publication number Publication date
BE422326A (enrdf_load_stackoverflow)

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