US3273976A - Sheet steel and sections, tubes and composite constructions manufactured therefrom - Google Patents

Sheet steel and sections, tubes and composite constructions manufactured therefrom Download PDF

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US3273976A
US3273976A US351932A US35193264A US3273976A US 3273976 A US3273976 A US 3273976A US 351932 A US351932 A US 351932A US 35193264 A US35193264 A US 35193264A US 3273976 A US3273976 A US 3273976A
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sheet
steel
ridge
sheets
tubes
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Wogerbauer Alfred
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Voestalpine AG
Voest AG
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Voestalpine AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
    • E04C2/322—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material with parallel corrugations
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold rolling
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E04C2002/3444—Corrugated sheets
    • E04C2002/345—Corrugated sheets with triangular corrugations
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E04C2002/3444—Corrugated sheets
    • E04C2002/3455—Corrugated sheets with trapezoidal corrugations
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E04C2002/3444—Corrugated sheets
    • E04C2002/3466—Corrugated sheets with sinusoidal corrugations
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2002/3494—Apparatus for making profiled spacer sheets
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12347—Plural layers discontinuously bonded [e.g., spot-weld, mechanical fastener, etc.]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/1241—Nonplanar uniform thickness or nonlinear uniform diameter [e.g., L-shape]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
    • Y10T428/12972—Containing 0.01-1.7% carbon [i.e., steel]

Definitions

  • This invention relates to steel sheets and sections, tubes and composite constructions manufactured therefrom, having a yield point of more than 50 kg./sq.mm., a tensile strength of more than 55 kg./sq.mrn., and an elongation of at least 8%.
  • steels of special grades such as St 60 or St 70, which are classified as low all-oy steels, and heat treatable steels, which have a higher content of alloy elements, such as manganese and vanadium, have hitherto been used.
  • Steels having the mentioned characteristics i.e. the low alloy structural steels and the higher alloy heat treatable steels, had to have a carbon content of considerably more than 0.30%, in order to achieve the required strength values.
  • Steels having such high carbon content however, can no longer be welded, or they require a special melting treatment, which materially increases the manufacturing costs and, consequently, the price of these steels.
  • strain hardened steel sheet having lasting ridgeand-groove profiles or a buckled surface are known, which have been used for special construction purposes.
  • the invention provides a sheet steel and sections, tubes and composite constructions manufactured therefrom, respectively, having a yield point of more than k g./sq.mm., a tensile strength of more than kg./sq.mm., and an elongation of at least 8% which are characterized in that the work pieces consist of steel having a carbon content of less than 0.30%, and are provided with a ridge-and-groove profile in which the inner radius of curvature of the grooves is smaller than three times the sheet or wall thickness and the ratio of depth to pitch of the ridge-and-gr'oove profile amounts to 1:15 to
  • the composition of the material that the carbon content is 0.15 to 0.19%, the silicon content 0.06 to 0.15%, the manganese content 0.30 to 0.45 the phosphorus content less than 0.09%, preferably not more than 0.03%, and the sulphur content less than 0.06%, preferably not more than 0.04%.
  • the strength values obtained by the cold working are in a certain relation also with the sheet thickness. Under the mentioned conditions the sheet thickness should be 1 to 6 mm., preferably 1.5 to 4 mm.
  • a steel strip provided according to the invention with a ridge-andgroove profile remains non profiled in narrow marginal zones, these zones serving for the welding in the subsequent manufacture of tubes, composite constructions, etc.
  • the eifect of the ridge-and-groove profiling according to the invention is essentially due to the fact that the profiled work piece is alternately bent and stretched perpendicularly to the direction of the ridges and grooves, the bent zones corresponding in the proportion of half the pitch to the grooves and the stretched zones being interposed.
  • FIGS. 1, 2 and 3 are sectional views of ridge-andgroove profiled strips as viewed perpendicularly to the direction of the grooves.
  • FIGS. 4 to 8 diagrammatically illustrate in like representation the manufacture of such strips.
  • FIGS. 9, 10 and 11 perspective views of sheets having different groove directions are shown.'
  • FIGS. 12 to 17 show, partly in sectional view and partly in top view, composite constructions made of strips provided according to the invention with a ridge-and-groove profile.
  • FIGS. 18 to 20 represent other composite constructions in perspective view, and
  • FIGS. 21 and 22 illustrate a process and an apparatus for manufacturing compound sheets.
  • letter a denotes the sheet thickness, r the inner radius of curvature of the grooves, t the depth of the grooves and a the pitch of the ridge-and-gr-oove profile, varying ratios of r:d and tza being represented in r the three figures.
  • FIGS. 4 to 8 the individual steps of the manufacture of such ridge-and-groove profiled sheets and the formation of edged and stretched zones in the profile-d sheet are illustrated.
  • the originally unworked sheet 1 is passed into the roll gap between upper roll 2 and lower roll 3 and initially engaged by the rolls in such manner that the ridgeand-groove profile provided on the working surface of the rolls contacts the sheet with its ridges.
  • the roll gap is designated by A '(FIG. 4).
  • the roll gap is reduced (roll gap A in FIG. and roll gap A in FIG. 6), the sheet 1 is continuously bent around the crests of the ridges, any peripheral recession trom the edges of the strip being eliminated.
  • the layer 4 originally disposed in the center of the sheet increases in length between two adjacent bends, so that the sheet is edged on the inside of the bending zones and is stretched on the outsides of the bending zones as well as in the interposed non-bent zones in the proportion of half the pitch. In this way the sheet is strain-hardened across its entire cross-section.
  • the difference between the original roll gap A and a reduced roll gap A or A amounts to the groove depth applied to the sheet (indentation), which in FIGS. 1 and 2 is designated by t.
  • the groove depth t plus the initial sheet thickness amounts to the nominal thickness s of the strain hardened sheet (FIG. 6).
  • the alternating bending and transverse stretching is finished.
  • a breakdown rolling is superimposed to the finished phase of strain hardening.
  • FIG. 8 an extreme case is illustrated, wherein a sheet is strain hardened solely by alternating bending.
  • the bent zones immediately adjoin to each other, without having zones of pure stretch drawing interposed therebetween, which may be accomplished by a suitable choice of the variable process conditions (adjustment of the roll gap relative to the sheet thickness).
  • Example 1 Strip No. 948,569, chemical composition: 0.01% C, 0.11% Si, 0.29% Mn, 0.009% P, 0.020% S (St 42).
  • Example 4 Strip No. 948,568, chemical composition as in Example 2.
  • Example 7 Chemical composition as in Example 5.
  • Example 9 Chemical composition: 0.10% C, 0.11% Si, 0.29% Mn, 0.009 P and 0.020% S (St 42) Test No. a r t d a, a, 5
  • FIG. 9 a strip sheet is illustrated which comprises three zones having ridge-and-groove profiles running in crosswise directions.
  • the lateral zones 6 and 7 are longitudinally grooved, and the interposed middle zone 8 is transversely grooved.
  • the maginal zones 5 are nonprotfiled and nonhardened so that they are easily weldable. Sheets of this type are particularly suitable for the manufacture of heat exchangers.
  • FIG. 11 a strip sheet is shown, which comprises two nonprofiled (nonhardened) marginal zones 9 and 10 and an interposed middle zone 11.
  • the middle zone 11 has crossing diagonal grooves 12, 12'.
  • FIG. 11 A similar design is shown in FIG. 11.
  • the middle zone 11 is again provided between two nonhardened marginal zones 9 and 10 of a sheet strip and has superimposed ridge-and-groove profiles 13, 13'.
  • FIGS. 12 to 14 illustrate in two sectional views and in a plan view a compound sheet consisting of a longitudinally grooved upper sheet 15 and a transversely grooved lower sheet 16. These sheets are connected to each other at the points of intersection 17 of the longitudinal ridges with the transverse ridges by welding, pref erably resistance welding.
  • FIGS. 15 and 16 again a compound sheet is shown which consists of three single sheets strain hardened by a ridge-and-groove profile. Between a longitudinally grooved upper sheet 18 and a likewise longitudinally grooved lower sheet 19 a transversely grooved intermediate sheet 20 is arranged. The three sheets are connected with each other at the points of intersection of the ridges by welding.
  • FIG. 17 shows a composite body of the hollow panel type. It consists of a longitudinally grooved upper sheet 21, a likewise longitudinally grooved lower sheet 22 and a zigzag-shaped middle part 23 serving as a spacer and forming a strutting.
  • the middle part 23 may also be made of a transversely grooved sheet so that at the junctures of the middle part with the sheets 21 and 22 longitudinal and transverse ridges again intersect and can be connected in a simple manner by resistance Welding.
  • FIGS. 18, 19 and 20 illustrate other structural panels formed of sandwich boards of the type shown in FIGS. 12 and 13.
  • a trapezoidally bent middle part 26 is arranged between an upper compound sheet 24 and a lower compound sheet 25, the middle part consisting of a single, longitudinally grooved sheet.
  • a middle part 29 of transversely grooved sheet is welded in between the two compound sheets 27 and 28.
  • FIG. 20 shows a structural panel, in which not only the outer sheets 30 and 31, but also the middle part 32 consist of a compound sheet of the type illustrated in FIGS. 12 and 13.
  • FIG. 21 an apparatus for the continuous manufacture of compound sheets, eg of the type shown in FIGS. 12 and 13, is illustrated.
  • the apparatus comprises reels for unwinding coiled hot rolled strips, devices for applying a ridge-and-groove profile viz. selectively a longitundinal or a transverse ridge-and-groove profile, a welding equipment for connecting the ridge-and-groove profiled single sheets, and a device for winding up or for shearing to length the composite constructions.
  • the strip 54 is reeled off coil 55, and simultaneously strip 56 is reeled 011 coil 57.
  • the strip 54 comes via the reversing roller 58 to the transverse-grooving rolls 59 and 60, in the roll gap of which it is imparted a transverse ridge-andgroove profile and strain-h-ardened.
  • the strip 54 is taken off via the reversing rollers 61 and 62.
  • the strip 56 is fed via the reversing roller 63 into the roll gap of a two high stand comprising rolls 64 and 65.
  • the longitudinal-grooving rolls 64 and 65 impart to the strip a ridge-and-groove profile in the longitudinal direction.
  • a four-high stand comprising the backing-up rolls 66 and 67 and the breaking-down rolls 68 and 69.
  • the longitudinally grooved sheet 70 now is passed straight on to the welding equipment, where it meets with the first strip, here designated by numeral 71, which is fed via the reversing roller 72.
  • the speed of the two strips must be synchronized, which may be accomplished by means of known type.
  • Such a synchronizing means is indicated in FIG. 21 by the roll 72 being displaceable from the position drawn in fully inked lines to the position drawn in dash lines.
  • the shortening and lengthening, respectively, of the loop formed by the transversely grooved strip 71 which is due to the movability of roll 72, may be utilized -for synchronizing.
  • the welding equipment comprises the current supply roller 73 and the current supply roller 74. To these two electrode rollers welding current is supplied from the transformer 75 via the sliding contacts 76 and 77. The electrode rollers extend over the entire width of the strips 70 and 71, which are continuously passed through between the electrode rollers in superposed position. Owing to the power concentration at the points of intersection of the longitudinal ridges with the transverse ridges of the two superposed sheets 70 and 71, transverse rows of intersections are successively welded together. For welding, alternating current or, preferably, direct current may be used. The welded compound sheet 78 may be out behind the welding machine into sheets of desired length by means of "blades 79 and 80.
  • FIG. 22 the gap between the electrode rollers is illustrated on an enlarged scale.
  • Numerals 81 and 82 denote the course of the welding current, which is concentrated at the crossing point 83 and there welds together sheets 70 and 71.
  • Composite constructions according to the present invention may be used with advantage in building practice for walls, ceilings, doors, gates, as clothing or the like.
  • a preferred field of application further lies in car building.
  • the building safety of buildings made with structural elements according to the present invention is increased and a favorable architectural effect is achieved. More-over, the costs, as compared with those of known structural elements which had to be made of considerably more expensive materials, are materially lower.
  • Strain hardened sheet steel having a yield point of more than 50 kg./mrn., a tensile strength of more than 55 kg./sq. mm., and an elongation of at least 8%, the sheet steel being made of steel having a carbon content of less than 0.30% and being provided with a ridge-andgroove profile in which the inner radius of curvature of the grooves is smaller than three times the sheet thickness and the ratio of depth to pitch of the ridge-and-groove profile amounts to 1:15 to 1:3.
  • Strain hardened sheet steel having a yield point of more than 50 kg./ sq. mm., a tensile strength of more than 55 kg./sq. mm., and an elongation of at least 8%, the sheet steel being made of steel having a carbon content of 0.15 to 0.19%, a silicon content of 0.06 to 0.15%, a manganese content of 0.30 to 0.45%, a phosphorus content of less than 0.09%, and a sulphur content of less than 0.06% and being provided with a ridge-and-groove profile in which the inner radius of curvature of the grooves is smaller than three times the sheet thickness and the ratio of depth to pitch of the ridge-and-groove profile amounts to 1:15 to 1:3.
  • Sheet steel in the form of strain hardened strip having a yield point of more than 50 kg./ sq. mm., a tensile strength of more than 55 kg./ sq. mm., and an elongation of at least 8%, the sheet steel being made of steel having a carbon content of 0.15 to 0.19%, a silicon content of 0.06 to 0.15%, a manganese content of 0.30 to 0.45%, a phosphorus content of less than 0.09%, and a sulphur content of less than 0.06%, having a sheet thickness of 1 to 6 mm.
  • the inner radius of curvature of the grooves being smaller than three times the sheet thickness and the ratio of depth to pit-ch of said ridgeand-groove profile amounting to 1:15 to 1:3.
  • Strain hardened sheet steel having a yield point of more than 50 kg./ sq. mm., a tensile strength of more than 55 kg./sq. mm, and an elongation of at least 8%, the sheet steel being made of steel having a carbon content of less than 0.30% and being provided with a ridge-andgr-oove profile in which the inner radius of curvature of the grooves is smaller than three times the sheet thickness and the ratio of depth to pitch of the ridge-and-groove profile amounts to 1:15 to 1:3, said sheet steel comprising perpendicularly to the direction of the grooves, alternating bent and stretched zones in relation to the pitch of the grooves, the bent zones corresponding in the proportion of half the pitch to the grooves and the stretched zones being interposed.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Heat Treatment Of Steel (AREA)
US351932A 1963-03-19 1964-03-16 Sheet steel and sections, tubes and composite constructions manufactured therefrom Expired - Lifetime US3273976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT216663A AT250144B (de) 1963-03-19 1963-03-19 Stahlblech, insbesondere zur Herstellung von Profilen, Rohren und Verbundkonstruktionen

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US (1) US3273976A (ko)
AT (1) AT250144B (ko)
BE (1) BE645355A (ko)
CH (1) CH450330A (ko)
ES (1) ES297750A1 (ko)
FR (1) FR1397322A (ko)
GB (1) GB1063783A (ko)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948614A (en) * 1971-12-06 1976-04-06 Bennes Marrel Composite metal sheetings
EP0279798A1 (en) * 1987-02-16 1988-08-24 Plannja Ab Profiled sheet for building purposes
US4923216A (en) * 1988-07-05 1990-05-08 Joseph Cedar Longitudinally reinforced crimped streamer
US5692347A (en) * 1996-08-05 1997-12-02 Hulek; Anton J. Corrugated metal sheet
US20070234695A1 (en) * 2006-04-11 2007-10-11 Kuhn S.A. Mower-conditioner conditioning roller, method of manufacturing such a roller and mower-conditioner equipped with such a roller
WO2007128490A1 (de) * 2006-05-08 2007-11-15 Richter System Gmbh & Co. Kg Befestigungselement für bauelemente des trockenbaus und verfahren zur herstellung eines solchen befestigungselements
US20090162614A1 (en) * 2007-11-13 2009-06-25 Hadley Industries Holdings Limited Sheet material
US20120328896A1 (en) * 2010-03-02 2012-12-27 Anil Krishna KAR Reinforcing bar and method for manufacturing the same
WO2016034906A1 (en) * 2014-09-05 2016-03-10 Hadley Industries Overseas Holdings Ltd. Profiles
CN111054748A (zh) * 2019-12-18 2020-04-24 太原理工大学 一种脉冲电流辅助轧制难/易变形金属复合板的制备方法
US10989461B2 (en) * 2016-10-04 2021-04-27 Whirlpool Corporation Structural formations incorporated within a vacuum insulated structure

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GB1531134A (en) * 1975-08-20 1978-11-01 Atomic Energy Authority Uk Methods of fabricating bodies and to bodies so fabricated
FR2540407A1 (fr) * 1983-02-03 1984-08-10 Metal Deploye Structure ajouree en materiau deploye, filtre et echangeur thermique comprenant une telle structure, procede de realisation d'une structure ajouree en materiau deploye et outil pour la mise en oeuvre de ce procede
AT395548B (de) * 1986-02-03 1993-01-25 Haboeck Herwig Walzvorrichtung zur herstellung von gewellten platten
GB2231597A (en) * 1989-02-04 1990-11-21 Steelpress Metal cladding panel

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US3948614A (en) * 1971-12-06 1976-04-06 Bennes Marrel Composite metal sheetings
EP0279798A1 (en) * 1987-02-16 1988-08-24 Plannja Ab Profiled sheet for building purposes
US4862666A (en) * 1987-02-16 1989-09-05 Plannja Ab Profiled sheet for building purposes
US4923216A (en) * 1988-07-05 1990-05-08 Joseph Cedar Longitudinally reinforced crimped streamer
US5692347A (en) * 1996-08-05 1997-12-02 Hulek; Anton J. Corrugated metal sheet
US7654067B2 (en) * 2006-04-11 2010-02-02 Kuhn S.A. Mower-conditioner equipped with first and second hollow rollers with reliefs
US20070234695A1 (en) * 2006-04-11 2007-10-11 Kuhn S.A. Mower-conditioner conditioning roller, method of manufacturing such a roller and mower-conditioner equipped with such a roller
CN101437633B (zh) * 2006-05-08 2011-06-22 里希特系统有限商业两合公司 用于干式建造构件的固定元件以及制造这种固定元件的方法
US8176633B2 (en) 2006-05-08 2012-05-15 Richter System Gmbh & Co. Kg Method for the production of a fastening element for dry construction elements
US20090090081A1 (en) * 2006-05-08 2009-04-09 Richter System Gmbh & Co. Kg Fastening element for dry construction elements,and method for the production of such a fastening element
EA014036B1 (ru) * 2006-05-08 2010-08-30 Рихтер Зистем Гмбх & Ко.Кг Элемент крепления для конструктивных элементов сухого способа строительства и способ изготовления такого элемента крепления
US8028495B2 (en) 2006-05-08 2011-10-04 Richter System Gmbh & Co. Kg Fastening element for dry construction elements, and method for the production of such a fastening element
WO2007128490A1 (de) * 2006-05-08 2007-11-15 Richter System Gmbh & Co. Kg Befestigungselement für bauelemente des trockenbaus und verfahren zur herstellung eines solchen befestigungselements
US7992418B1 (en) 2007-11-13 2011-08-09 Hadley Industries Overseas Holdings Limited Sheet material
US20110192209A1 (en) * 2007-11-13 2011-08-11 Hadley Industries Overseas Holdings Limited Sheet material
US7947380B2 (en) 2007-11-13 2011-05-24 Hadley Industries Overseas Holdings Limited Sheet material
US20090162614A1 (en) * 2007-11-13 2009-06-25 Hadley Industries Holdings Limited Sheet material
US9138796B2 (en) 2007-11-13 2015-09-22 Hadley Industries Overseas Holdings Limited Sheet material
US20120328896A1 (en) * 2010-03-02 2012-12-27 Anil Krishna KAR Reinforcing bar and method for manufacturing the same
WO2016034906A1 (en) * 2014-09-05 2016-03-10 Hadley Industries Overseas Holdings Ltd. Profiles
GB2547561A (en) * 2014-09-05 2017-08-23 Hadley Ind Overseas Holdings Ltd Profiles
GB2547561B (en) * 2014-09-05 2018-02-21 Hadley Industries Overseas Holdings Ltd Profiles
US10808404B2 (en) 2014-09-05 2020-10-20 Hadley Industries Overseas Holdings Ltd. Profiles
US11713575B2 (en) 2014-09-05 2023-08-01 Hadley Industries Overseas Holdings Ltd. Profiles
US10989461B2 (en) * 2016-10-04 2021-04-27 Whirlpool Corporation Structural formations incorporated within a vacuum insulated structure
CN111054748A (zh) * 2019-12-18 2020-04-24 太原理工大学 一种脉冲电流辅助轧制难/易变形金属复合板的制备方法

Also Published As

Publication number Publication date
BE645355A (ko) 1964-07-16
FR1397322A (fr) 1965-04-30
ES297750A1 (es) 1964-06-01
GB1063783A (en) 1967-03-30
AT250144B (de) 1966-10-25
CH450330A (de) 1968-01-31

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