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Publication numberUS3698224 A
Publication typeGrant
Publication dateOct 17, 1972
Filing dateNov 16, 1970
Priority dateNov 16, 1970
Publication numberUS 3698224 A, US 3698224A, US-A-3698224, US3698224 A, US3698224A
InventorsSaytes Adam Eric
Original AssigneeSiderurgica Occidental C A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Process for the production of steel structural shapes
US 3698224 A
Steel structural shapes such as "H," "I," and channel beams are cold fabricated by progressively deforming welded seam steel tubing made from hot or cold rolled steel in a welded tube mill, the structural shapes being closed curves in section and having web portions of two adjacent thicknesses with flange portions at each end thereof.
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Description  (OCR text may contain errors)

United States Patent 1151 3,698,224 Saytes [4 1 Oct. 17, 1972 [54] PROCESS FOR THE PRODUCTION OF 1,779,185 10/1930 Meiser et al ..72/178 STEEL STRUCTURAL SHAPES 3,256,670 6/1966 Tersigni ..52/729 426,558 4/1890 Dithridge ..52/729 [72] Q San, Maracabm 2,085,829 7/1937 Rogers ..29/155 a 999,467 8/1911 Sack ..72/178 [73] Assignee: Siderurgica Occidental C.A.,

Mara ib Venezuela Primary Examiner-Lowell A. Larson v Attorney-Peter L. Taller 122] l'llcd: Nov. l6, 1970 21 Appl. No.: 89,603 [57] ABSTRACT Steel structural shapes such as H, l, and channel Related Apphcamn Data beams are cold fabricated by progressively deforming [63] Continuation of Ser. No. 821,843, May 5, welded seam steel tubing made from hot or cold rolled 1969, abandoned. steel in a welded tube mill, the structural shapes being closed curves in section and having web portions of [52] U.S. Cl. ..72/ 178, 29/155 R two j en hickn e with flange p r ions at each [51 Int. Cl. ..B2ld 47/00 end thereof- [58] Field of Search ..72/178, 225, 367; 29/155 R, 29/480; 52/729 [56] References Cited 1 Claim, 22 Drawing Figures UNITED STATES PATENTS 991,603 5/1911 Brooks ..52/729 93 iii 92 I 48 1' i I! 1 55: 91 515 v5 96 In PmmEnnmnm 3,698,224 SHEET 1 OF 4 I NVE NTOR I ADAM ERIC SAYTES 3295 Wei/m ATTORNEY PATENTEDum 11 I972 sum 2 BF 4 INVENTOR.


B ADAM ERIC SAYTES 52 ,15, 0%: /7;%

ATTORNEY mgnocm'mz 'snm u M INVENTOR:

ADAM ERIC SAYTES Milli! PROCESS FOR THE PRODUCTION OF STEEL STRUCTURAL SHAPES CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of application Ser. No. 821,843 filed May 5, 1969, and now abandoned.

BACKGROUND OF THE INVENTION SUMMARY OF THE INVENTION Hot rolled steel structural shapes in the form of I, H, and channel beams having a solid cross section are old and well known. The hot forming rolling mill equipment required to form these conventional shapes is complex and costly. Highly trained and skilled personnel are required to operate this complex equipment.

This invention may be practiced in conjunction with well known and easily operated welded tube mills which only involve cold forming operations including the welding of the tube seam. According to this invention, the cold formed circular welded tubing is further cold formed by progressive deformations to produce superior structural shapes. These shapes, I beams, H beams, and channels, have web portions formed from two touching thicknesses of the deformed tube wall with contiguous upper and lower flanges of these shapes being substantially triangular. Thus the closed curve of a section through a structural shape of this invention comprises two touching thicknesses forming a central web having substantially triangular loops at the ends thereof to form flanges. The tube is preferrably deformed so that its welded seam is at the center of the web at a location subjected to minimum stresses.

Not only is the production of the structural shapes of this invention rapid, but the productive facilities required are far less costly than a conventional rolling mill. In addition, once set up, production may be carried out by relatively unskilled workers. The structural shapes of this invention have a particularly high strength to weight ratio as a result of their hollowflange portions.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1-3 are, respectively, diagrammatic perspective views of a slitting stage, a preforming stage, and a forming and welding stage of a welded tube mill;

FIG. 4 is a perspective view of mountings for rollers for the progressive deformation of welded steel tubing into the structural shapes of this invention;

FIG. 5 is a perspective view of a cut off unit for the structural shapes of this invention;

FIG. 6 is a section through an H beam according to this invention;

FIG. 7 is a perspective view of the end of the H" beam of FIG. 6;

FIG. 8 is a transverse section through a length of welded steel tubing from a conventional welded tube mill which may be progressively deformed into the structural shapes of this invention;

FIGS. 9-16 show the progressive deformation by sets of rollers of the tube of FIG. 8 into the H beam of FIGS. 6 and 7;

FIGS. 17 and 18 show a clampand .knifefor cutting off the structural shape of FIGS. 6 and 7;

FIG. 19 is a transverse section through an I" beam according to this invention;

FIG. 20 is a transverse section through a channel according to this invention;

FIG. 21 is a perspective view ofthe endof the channel of FIG. 20;and,

FIG. 22 is a transverse section through a T according to this invention.

DESCRIPTION OF THE PREFERRED Embodiments referring to the: Drawing in detail, FIG. 1 shows a coil 30mounted on a holder 31. Coil 30 may be of hot or cold rolled steel from about 0.5 to 5 mm. thick. Sheet stock 32 is drawn from coil 30 through slitter 33 from which strips of sheet stock 34 slit to a desired width are rolled into slit coils 35 by winder 36.

As shown in FIG. 2, the slit coils 35 may be joined and wound on a large reel 37. Referring now to FIG. 3, suitable mountings 38 support pairs of vertical and horizontal motor driven rollers of hardened steel. These rollers(not shown) progressively deform the strip .34 until its edges meet. The mountings 38 for these preforming rollers are bolted to a table 39 or a like rigid support. The abutting edges of strip 34 are welded by any suitable welder 40 and passed through a cooling water spray at 41. All the foregoing elements, as described, are well known and constitute a tube mill for the production of welded seam. tubing 44 as shown in FIG. 8. Tubing 44 has a wall 45 of uniform thickness formed from the strip 34 which has its abutting edges 46 and 47 welded at 48. Weld 487' should be substantially the thickness of the strip 34 of wall 35.

FIG. 4 shows mountings 51-58 fixed to an extension of table 39. The mountings 51-58 support, respectively, the sets of vertically mounted rollers 61-68 and the sets of horizontally mounted rollers 71-78 shown in FIGS. 9-16 progressively deforming the round tube 44 into an H beam structural shape 59. H beam 59 is shown in FIGS. 6 and 7. The H beam 59 has a central web 60 of two adjacent, substantially touching, and parallel thicknesses 69 and 70, one of which contains the weld 48 in its center. The flanges 79 of H beam 59 are best formed to be substantially triangular in shape with flat upper and lower portions 80 normal to web 60 and with inner portions 81 and 82 sloping toward the web 60. The outer edges 83 of the flanges 79 are best slightly rounded to avoid and distribute stresses which would otherwise be concentrated at these points.

In the progressive deformation of the round tube 44 into an H beam 59, the sides of the tube 44, one of which contains weld 48, are bent inward and flattened until they touch to form central web 60. At the same time, the flanges 79 are formed. At least one of each three sets of rollers 61-68 and 71-78 should be driven by any suitable means(not shown). It is particularly desirable to drive the last set of rollers 68 shown in FIG. 16 as they may bear heavily inward against the touching thicknesses 69 and 70 of web 60 to provide superior traction. It is to be noted that the particular sets of forming rollers shown and their configurations are merely illustrative of the types which may be used.

FIG. shows a cut off unit for the H beam structural shape 59. FIG. 17 shows a pair of clamps 86 and 87 which engage beam 59 to allow the shear blade 88, shown in FIG. 18, to make a clean cut off with a minimum amount of distortion at the cut off ends.

FIG. 19 shows an I beam 90 which is made by the cold working progressive deformation of round welded steel tubing substantially in the same manner as that shown and described for I-I" beam 59. I beam 90 has weld 48 in the center of one of the adjacent thicknesses 91 and 92 which form the web 93. The smaller flanges 94 of beam 90 are substantially triangular in shape with flat outer edges 95 normal to web 93 and with two inward sloping inner surfaces 96 extending from each outer edge or surface 95. The corners or edges of the flanges 94 are slightly rounded to reduce stress.

FIGS. and 21 show a channel 100 according to this invention which is formed by the progressive cold deformation of round welded steel tubing. Channel 100 has a central web 101 of inner and outer substantially touching thicknesses 102 and 103. The inner thickness 102 contains the weld 48 so that it will be in an area of minimum stress. The flanges 105 of channel 100 are substantially triangular with flat outer surfaces 106. Each flange 105 has a single sloping inner surface 107. The ends or continuations 108 of the outer thickness 103 of web 101 form one leg of the triangular flanges 105.

FIG. 22 shows a T shape 110 which may be fabricated according to this invention. A tube 44 is progressively deformed to form the shape which has a substantially triangular lower flange 111 and an upstanding web 112 containing weld 48 at its uppermost end.

The structural shapes of this invention may be painted or coated in any desired manner.

While this invention has been shown and described in the best form known, it will nevertheless be understood that this is purely exemplary and that modifications may be made without departing from the spirit and scope of the invention except as it may be more limited in the appended claims.


l. The process of cold forming structural steel shapes having transverse sections of closed curves forming I beams, comprising the steps of a. cold forming a steel strip by rolling the strip through rollers until its edges meet;

b. continuously welding the edges of the strip to cold form a welded tube containing a single longitudinal weld;

c. passing the round welded steel tube with its longitudinal weld on one side through successive forming rollers to progressively deform the tube by forcing its side portions together forming a web of arallel touching thicknesses of the wall of said ube while flattening its top and bottom surfaces to form triangular flanges above and below said web, the single longitudinal weld being disposed substantially in the center of one of the sides of the tube forming the web;

d. clamping the I beam structural shape thus formed between two clamps which correspond to its outer profile; and

e. passing a shear blade adjacent to the clamps cutting off lengths of the I beam.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US426558 *Aug 28, 1889Apr 29, 1890 George w
US991603 *Sep 22, 1910May 9, 1911George William BrooksFireproof beam.
US999467 *Nov 30, 1908Aug 1, 1911Hugo SackMethod of and apparatus for producing structural shapes.
US1779185 *Aug 4, 1927Oct 21, 1930Josef MeiserApparatus for the production of section iron with box-shaped cross sections
US2085829 *May 8, 1935Jul 6, 1937Harry E RogersMethod of making beams
US3256670 *Jul 13, 1962Jun 21, 1966Ennio TersigniPrefabricated steel joist adapted for the reinforcement of floors
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3860781 *Jun 4, 1973Jan 14, 1975Voest AgMethod of and apparatus for continuously producing welded light construction beam sections, in particular I- or T-beams
US4299348 *Jan 23, 1980Nov 10, 1981Mansei Kogyo Kabushiki KaishaMethod of making a game racket
US5163225 *Apr 28, 1992Nov 17, 1992Tube Technology Pty Ltd.Process for forming a structural member utilizing high frequency electrical induction or resistance welding
US5403986 *Sep 25, 1991Apr 4, 1995Tube Technology Pty. Ltd.Structural member and method of making by cold rolling followed by induction or resistance welding
US5454504 *Aug 29, 1994Oct 3, 1995Shape CorporationApparatus for roll-forming end bumper for vehicles
US5501053 *Sep 25, 1991Mar 26, 1996Tube Technology Pty., Ltd.Interengageable structural members
US5553437 *May 3, 1994Sep 10, 1996Navon; RamStructural beam
US5566874 *Sep 26, 1995Oct 22, 1996Shape CorporationApparatus for forming an end bumper for vehicles
US5577796 *Jun 7, 1995Nov 26, 1996Norsk Hydro A.S.Structural beam and method of manufacture thereof
US5813594 *Oct 21, 1996Sep 29, 1998Shape CorporationApparatus for forming an end bumper for vehicles
US6131362 *Feb 2, 1999Oct 17, 2000Buecker Machine & Iron Works, Inc.Sheet metal beam
US6286868Apr 3, 1998Sep 11, 2001Freightliner LlcTruck rail frame
US6352297 *May 9, 2000Mar 5, 2002Accra Teknik AbBumper bar and method for manufacturing the same
US6398260Nov 10, 1997Jun 4, 2002Dana CorporationSide rail for a vehicle frame assembly
US6684505Aug 8, 2001Feb 3, 2004Accra Teknik AbMethod for manufacturing a bumper bar
US6705143 *Jul 31, 2001Mar 16, 2004Lausan Chung-Hsin LiuMethod of manufacturing loading plane border frame tubes for chairs
US6726258Nov 23, 2000Apr 27, 2004Accra Teknik AbBumper bar
US6973881Sep 10, 2002Dec 13, 2005Bianchi Tamo PRailcar nailable floor
US7434366Jan 11, 2005Oct 14, 2008A. Zahner CompanyI-beam with curved flanges
US7441751Aug 22, 2006Oct 28, 2008Gibbs Edward LCable fence system
US7475868Jan 26, 2004Jan 13, 2009Gibbs Edward LCable fence system
US7651073Jun 17, 2004Jan 26, 2010Gibbs Edward LFence post
US7784243Apr 28, 2008Aug 31, 2010A. Zahner CompanyI-beam with curved flanges
US7832168 *Nov 16, 2010Usg Interiors, Inc.Grid tee for suspension ceiling
US7891155 *Feb 22, 2011Surowiecki Matt FSheet metal header beam
US8181423May 22, 2012Smorgon Steel Litesteel Products Pty Ltd.Beam
US8266860Sep 18, 2012Usg Interiors, LlcGrid tee for suspension ceiling
US9004342Mar 10, 2014Apr 14, 2015Consolidated Metal Products, Inc.Welded hot-rolled high-strength steel structural members and methods
US9027309 *Jan 9, 2012May 12, 2015Consolidated Metal Products, Inc.Welded hot-rolled high-strength steel structural members and methods
US20020108345 *Apr 9, 2002Aug 15, 2002Walker Steven H.Metal structural member
US20040045476 *Sep 10, 2002Mar 11, 2004Bianchi Tamo P.Railcar nailable floor
US20050108979 *Nov 26, 2003May 26, 2005Yttrup Peter J.Pole reinforcing structures
US20050217098 *Mar 31, 2005Oct 6, 2005Alexander EgidiDevice and process for producing rolled sections
US20060150571 *Jan 11, 2005Jul 13, 2006Zahner L W IiiI-beam with curved flanges
US20080028720 *Jun 23, 2004Feb 7, 2008Smorgon Steel Litesteel Products Pty LtdAn Improved Beam
US20080134611 *Feb 1, 2008Jun 12, 2008Usg Interiors, Inc.Grid tee for suspension ceiling
US20080196332 *Feb 15, 2007Aug 21, 2008Surowiecki Matt FSheet metal header beam
US20080196356 *Apr 28, 2008Aug 21, 2008A. Zahner CompanyI-beam with curved flanges
US20090158684 *Mar 2, 2009Jun 25, 2009Usg Interiors, Inc.Grid tee for suspension ceiling
US20100005758 *Sep 9, 2009Jan 14, 2010Smorgon Steel Litesteel Products Pty LtdBeam
US20110078968 *Apr 7, 2011James FerrellSingle Strip - Double Web Ceiling Grid Member
US20110162320 *Jul 7, 2011Smorgon Steel Litesteel Products Pty LtdBeam
US20120328898 *Jul 22, 2010Dec 27, 2012Best Joist Inc.Roll formed steel beam
US20130174512 *Jan 9, 2012Jul 11, 2013Nucor CorporationWelded Hot-Rolled High-Strength Steel Structural Members and Methods
DE3428864A1 *Aug 4, 1984Feb 13, 1986Audi AgMethod for the production of a member for the construction of motor vehicles
EP0092078A2 *Mar 30, 1983Oct 26, 1983Gebhardt, ManfredArrangement for clamping the edges of glass panes, in particular at the construction of greenhouses
EP0528973A1 *Apr 29, 1991Mar 3, 1993Ram NavonStructural beam.
EP0649949A1 *Apr 29, 1991Apr 26, 1995Ram NavonStructural beam
WO2014096741A1 *Dec 20, 2013Jun 26, 2014Airbus Operations (Sas)Stiffener for an aircraft fuselage, method for manufacturing same, and aircraft fuselage equipped with such a stiffener
U.S. Classification72/178, 29/897.35
International ClassificationB21D5/06, E04C3/04, B21D47/00, B21D5/08, E04C3/07
Cooperative ClassificationE04C2003/043, E04C2003/0456, E04C2003/046, E04C3/07, B21D5/086, B21D47/00, E04C2003/0421, E04C2003/0473
European ClassificationB21D5/08C, B21D47/00, E04C3/07