WO2000035610A1 - Method of manufacturing structural members - Google Patents

Method of manufacturing structural members Download PDF

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Publication number
WO2000035610A1
WO2000035610A1 PCT/NO1999/000375 NO9900375W WO0035610A1 WO 2000035610 A1 WO2000035610 A1 WO 2000035610A1 NO 9900375 W NO9900375 W NO 9900375W WO 0035610 A1 WO0035610 A1 WO 0035610A1
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WO
WIPO (PCT)
Prior art keywords
sep
international
republic
pct
states
Prior art date
Application number
PCT/NO1999/000375
Other languages
French (fr)
Inventor
Rolf Vold
Original Assignee
Norsk Hydro Asa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Norsk Hydro Asa filed Critical Norsk Hydro Asa
Priority to AU16997/00A priority Critical patent/AU1699700A/en
Publication of WO2000035610A1 publication Critical patent/WO2000035610A1/en
Priority to NO20012908A priority patent/NO20012908L/en

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Classifications

    • 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
    • B21C37/16—Making tubes with varying diameter in longitudinal direction
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/10—Making finned tubes
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/14—Making other products
    • 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
    • B21C37/154—Making multi-wall tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1813—Structural beams therefor, e.g. shock-absorbing made of metal
    • B60R2019/182—Structural beams therefor, e.g. shock-absorbing made of metal of light metal, e.g. extruded

Definitions

  • Figure 1 shows in a schematical perspective view an open extruded member 2 comprising a base portion 21 provided with a rib 22 protruding longitudinally along the member.
  • Figure 2 illustrates schematically provision of lateral flanges 23,24 by means of any suitable method like e.g. pressing, rolling etc., followed optionally by gradual reduction of the flanges' lateral extension in the direction towards the end of the member by removal/cutting of material as depicted by the hatched fields.
  • any suitable method like e.g. pressing, rolling etc., followed optionally by gradual reduction of the flanges' lateral extension in the direction towards the end of the member by removal/cutting of material as depicted by the hatched fields.
  • Figure 3 illustrates an interim stage of the reshaping process from open to a closed shape configuration of the member 2 comprising provision of interim side walls 25,26 followed by a further reshaping step along the dotted lines, thereby folding the interim side walls 25,26 into a top portion 27 of a closed shape member by abutting the lateral flanges 23,24 on the top of the longitudinally extending rib 22 as shown in Figure 4a, followed by a joining/welding operation.
  • Figure 4b shows the formed closed shape member 3 in a preferred embodiment suitable for use as a bumper in vehicles exhibiting a channel-like recession 35 accommodating/- protecting a welding seam (joint) 36 joining the abutted flanges 23,24 and the rib 22, thereby providing two separate chambers 31,32.
  • the channel recession 35 and thus the whole height H of the beam 3 is decreasing from the OY central line towards the end(s) as illustrated in a perspective view in Fig. 4a.
  • This flexibility with regard to variation of cross-sectional area of the bumper beam is an important advantage resulting from the novel manufacturing method according to the present invention. Customarily this effect is achieved by deforming (folding) of side walls of readily closed shape extruded members, thus increasing both the weight of the beam, the material consumption and thus the cost of the beams.
  • Figure 5 illustrates schematically in a perspective view and a cross-sectional view, respectively, a simplified embodiment of the structural member 3 exhibiting a constant height along its longitudinal extrusion.
  • the interim side walls 25,26 from Figure 3 are in this case without provision of any lateral flanges directly folded into a top portion of the thereby provided closed shape member 3 being abutted and joined (welded) along the rib 22 providing two separate chambers 31,32.
  • any other conventional joining techniques may be applied depending on the actual demand/performance to the structural member.
  • Priority Data SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU,
  • HYDRO ASA [NO/NO]; N-0240 Oslo (NO).
  • OAPI patent (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
  • a novel method of manufacturing structural members having closed cross-sectional configuration comprises steps of providing an open member (2) followed by reshaping/folding of its lateral parts and joining of abutted side walls into a co-extruded supporting longitudinally extending rib (21).
  • the resulting structural member is preferentially a part of a vehicle body structure, e.g. a bumper beam.
  • Method of manufacturing longitudinally extending structural members having a closed cross-sectional configuration comprising two or more chambers, said method comprising steps of extruding an open member (2) having a base portion (21) provided with at least one longitudinally protruding rib (22), reshaping of lateral parts of the member into a pair of interim side walls (25,26), folding the interim side walls (25,26) into a top portion (27) of the thereby formed closed shape member (3) by bringing the folded abutted side walls to rest on the longitudinally extending rib (21), and finally joining of the abutted side walls and the supporting rib(s) together by any suitable joining technique known per se.
  • Structural member particularly for application in a vehicle body structure comprising a hollow shape (3), where the cavity of the hollow shape is longitudinally divided into two or more chambers (31,32) by means of dividing rib(s) (22), characterized in that said rib(s) are integral co-extruded part(s) of open extruded member (2) providing a support for a joint (36) connecting the abutted walls of the folded member (2).
  • Structural member according to claim 5 characterized in that the hollow shape exhibits varying cross-sectional area along its longitudinal extension.
  • Structural member according to one or more preceding claims, characterized in that the member is a bumper beam for vehicles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Extrusion Of Metal (AREA)

Abstract

A novel method of manufacturing structural members having closed cross-sectional configuration comprises steps of providing an open member (2) followed by reshaping/folding of its lateral parts and joining of abutted side walls into a co-extruded supporting longitudinally extending rib (21). The resulting structural member is preferentially a part of a vehicle body structure, e.g. a bumper beam.

Description

Figure 1 shows in a schematical perspective view an open extruded member 2 comprising a base portion 21 provided with a rib 22 protruding longitudinally along the member.
Inherent advantages of extruding an open member compared to a closed shape configurated member is a higher extruding speed, less wear of the extruding tool (die), larger choice of applicable alloys and possibility of weight-optimizing of the member by provision of thinner walls when and where appropriate.
Figure 2 illustrates schematically provision of lateral flanges 23,24 by means of any suitable method like e.g. pressing, rolling etc., followed optionally by gradual reduction of the flanges' lateral extension in the direction towards the end of the member by removal/cutting of material as depicted by the hatched fields.
Figure 3 illustrates an interim stage of the reshaping process from open to a closed shape configuration of the member 2 comprising provision of interim side walls 25,26 followed by a further reshaping step along the dotted lines, thereby folding the interim side walls 25,26 into a top portion 27 of a closed shape member by abutting the lateral flanges 23,24 on the top of the longitudinally extending rib 22 as shown in Figure 4a, followed by a joining/welding operation.
Figure 4b shows the formed closed shape member 3 in a preferred embodiment suitable for use as a bumper in vehicles exhibiting a channel-like recession 35 accommodating/- protecting a welding seam (joint) 36 joining the abutted flanges 23,24 and the rib 22, thereby providing two separate chambers 31,32.
Advantageously, thanks to the optional provision of flanges 23,24 exhibiting varying width, the channel recession 35 and thus the whole height H of the beam 3 is decreasing from the OY central line towards the end(s) as illustrated in a perspective view in Fig. 4a. This flexibility with regard to variation of cross-sectional area of the bumper beam is an important advantage resulting from the novel manufacturing method according to the present invention. Customarily this effect is achieved by deforming (folding) of side walls of readily closed shape extruded members, thus increasing both the weight of the beam, the material consumption and thus the cost of the beams.
Although the present invention has been described and illustrated with respect to the preferred features and manner of manufacturing and preferred embodiments, it is to be understood that various changes and modifications may be made to the specifically described and illustrated arrangements without departing from the scope of the present invention.
Thus Figure 5 illustrates schematically in a perspective view and a cross-sectional view, respectively, a simplified embodiment of the structural member 3 exhibiting a constant height along its longitudinal extrusion. The interim side walls 25,26 from Figure 3 are in this case without provision of any lateral flanges directly folded into a top portion of the thereby provided closed shape member 3 being abutted and joined (welded) along the rib 22 providing two separate chambers 31,32.
Apart from the disclosed joining based on welding of the abutted walls of the member (preferentially friction stir welding), any other conventional joining techniques may be applied depending on the actual demand/performance to the structural member.
Consequently, structural members for different purposes having variation in the cross-sectional configuration, or constant cross-section with option for cutting of members having desired length, can be manufactured according to the present invention. International Bureau
Figure imgf000005_0001
INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERAΗON TREATY (PCT)
(51) International Patent Classification 1 : (11) International Publication Number: WO 00 35610 B21C 23/14 // B60R 19/02 Al
(43) International Publication Date: 22 June 2000 (22.06.00)
(21) International Application Number: PCT/NO99/00375 (81) Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB,
(22) International Filing Date: 10 December 1999 (10.12.99) GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG,
(30) Priority Data: SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU,
19985846 14 December 1998 ( 14.12.98) NO ZA, ZW, ARIPO patent (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW), Eurasian patent (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), European patent (AT, BE, CH, CY, DE,
(71) Applicant (for all designated States except US): NORSK DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE),
HYDRO ASA [NO/NO]; N-0240 Oslo (NO). OAPI patent (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
(72) Inventor; and
(75) Inventor/Applicant (for US only): VOLD, Rolf [NO/NO]; Rudsiatten, N-2830 Raufoss (NO). Published
With international search report.
(74) Agent: RICANEK, Ivan; Norsk Hydro ASA, N-0240 Oslo Before the expiration of the time limit for amending the (NO). claims and to be republished in the event of the receipt of amendments.
(54) Title: METHOD OF MANUFACTURING STRUCTURAL MEMBERS (57) Abstract
A novel method of manufacturing structural members having closed cross-sectional configuration comprises steps of providing an open member (2) followed by reshaping/folding of its lateral parts and joining of abutted side walls into a co-extruded supporting longitudinally extending rib (21). The resulting structural member is preferentially a part of a vehicle body structure, e.g. a bumper beam.
Figure imgf000005_0002
FOR THE PURPOSES OF INFORMATION ONLY
Codes used to identify States party to the PCT on the front pages of pamphlets publishing international applications under the PCT.
AL Albania ES Spain LS Lesotho SI Slovenia
AM Armenia FI Finland LT Lithuania SK Slovakia
AT Austria FR France LU Luxembourg SN Senegal
AU Australia GA Gabon LV Latvia SZ Swaziland
AZ Azerbaijan GB United Kingdom MC Monaco TD Chad
BA Bosnia and Herzegovina GE Georgia MD Republic of Moldova TG Togo
BB Barbados GH Ghana MG Madagascar TJ Tajikistan
BE Belgium GN Guinea MK The former Yugoslav TM Turkmenistan
BF Burkina Faso GR Greece Republic of Macedonia TR Turkey
BG Bulgaria HU Hungary ML Mali TT Trinidad and Tobago
BJ Benin IE Ireland MN Mongolia UA Ukraine
BR Brazil IL Israel MR Mauritania UG Uganda
BY Belarus IS Iceland MW Malawi US United States of America
CA Canada IT Italy MX Mexico uz Uzbekistan
CF Central African Republic JP Japan NE Niger VN Viet Nam
CG Congo KE Kenya NL Netherlands YU Yugoslavia
CH Switzerland KG Kyrgyzstan NO Norway ZW Zimbabwe
CI Cate d'lvoire KP Democratic People's NZ New Zealand
CM Cameroon Republic of Korea PL Poland
CN China KR Republic of Korea PT Portugal
CU Cuba KZ Kazakstan RO Romania
CZ Czech Republic C Saint Lucia RU Russian Federation
DE Germany LI Liechtenstein SD Sudan
DK Denmark LK Sri Lanka SE Sweden
EE Estonia LR Liberia SG Singapore Claims
1. Method of manufacturing longitudinally extending structural members having a closed cross-sectional configuration comprising two or more chambers, said method comprising steps of extruding an open member (2) having a base portion (21) provided with at least one longitudinally protruding rib (22), reshaping of lateral parts of the member into a pair of interim side walls (25,26), folding the interim side walls (25,26) into a top portion (27) of the thereby formed closed shape member (3) by bringing the folded abutted side walls to rest on the longitudinally extending rib (21), and finally joining of the abutted side walls and the supporting rib(s) together by any suitable joining technique known per se.
2. Method according to claim 1, characterized in that the step of reshaping of the lateral parts of the open member (2) further comprises provision of lateral flanges (23,24).
3. Method according to claim 2, characterized in that excess material from the base portion (21) is cut prior to the reshaping step to provide inwardly extending flanges (23,24) exhibiting a varying height along the longitudinal extension of the folded closed shape member.
4. Method according to claim 1 , characterized in that the joining of abutted walls is conducted by friction stir welding. 5. Structural member, particularly for application in a vehicle body structure comprising a hollow shape (3), where the cavity of the hollow shape is longitudinally divided into two or more chambers (31,32) by means of dividing rib(s) (22), characterized in that said rib(s) are integral co-extruded part(s) of open extruded member (2) providing a support for a joint (36) connecting the abutted walls of the folded member (2).
6. Structural member according to claim 5, characterized in that the hollow shape exhibits varying cross-sectional area along its longitudinal extension.
7. Structural member according to claim 5 or 6, characterized in that the joint (36) is a welded seam located in a channel-like recession (35) provided along said member's longitudinal extension by a pair of inwardly extending flanges (23,24).
8. Structural member according to one or more preceding claims, characterized in that the member is a bumper beam for vehicles.

Claims

EMI1.1 <tb>
<SEP> INTERNATIONAL <SEP> APPLICATION <SEP> PUBLISHED <SEP> UNDER <SEP> THE <SEP> PATENT <SEP> COOPERATION <SEP> TREATY <SEP> (PCT) <tb> (51) <SEP> International <SEP> Patent <SEP> Classification <SEP> 7 <SEP> : <SEP> (11) <SEP> International <SEP> Publication <SEP> Number: <SEP> WO <SEP> 00/35610 <tb> <SEP> B21C <SEP> 23/14//B60R <SEP> 19/02 <SEP> ail <tb> <SEP> (43) <SEP> International <SEP> Publication <SEP> Date: <SEP> 22 <SEP> June <SEP> 2000 <SEP> (22.06.00) <tb> (21) <SEP> International <SEP> Application <SEP> Number: <SEP> PCT/N099/00375 <SEP> (81) <SEP> Designated <SEP> States: <SEP> AE, <SEP> AL, <SEP> AM, <SEP> AT, <SEP> AU, <SEP> AZ, <SEP> BA, <SEP> BB, <SEP> BG, <tb> <SEP> BR, <SEP> BY, <SEP> CA, <SEP> CH, <SEP> CN, <SEP> CU, <SEP> CZ, <SEP> DE, <SEP> DK, <SEP> EE, <SEP> ES, <SEP> FI, <SEP> GB, <tb> (22) <SEP> International <SEP> Filing <SEP> Date:
<SEP> 10 <SEP> December <SEP> 1999 <SEP> (10.12.99) <SEP> GD, <SEP> GE, <SEP> GH, <SEP> GM, <SEP> HR, <SEP> HU, <SEP> ID, <SEP> IL, <SEP> IN, <SEP> IS, <SEP> JP, <SEP> KE, <SEP> KG, <tb> <SEP> KP, <SEP> KR, <SEP> KZ, <SEP> LC, <SEP> LK, <SEP> LR, <SEP> LS, <SEP> LT, <SEP> LU, <SEP> LV, <SEP> MD, <SEP> MG, <SEP> MK, <tb> <SEP> MN, <SEP> MW, <SEP> MX, <SEP> NO, <SEP> NZ, <SEP> PL, <SEP> PT, <SEP> RO, <SEP> RU, <SEP> SD, <SEP> SE, <SEP> SG, <tb> (30) <SEP> Priority <SEP> Data:
<SEP> SI, <SEP> SK, <SEP> SL, <SEP> TJ, <SEP> TM, <SEP> TR, <SEP> TT, <SEP> UA, <SEP> UG, <SEP> US, <SEP> UZ, <SEP> VN, <SEP> YU, <tb> <SEP> 19985846 <SEP> 14 <SEP> December <SEP> 1998 <SEP> (14.12.98) <SEP> NO <SEP> ZA, <SEP> ZW, <SEP> ARIPO <SEP> patent <SEP> (GH, <SEP> GM, <SEP> KE, <SEP> LS, <SEP> MW, <SEP> SD, <SEP> SL, <tb> <SEP> SZ, <SEP> TZ, <SEP> UG, <SEP> ZW), <SEP> Eurasian <SEP> patent <SEP> (AM, <SEP> AZ, <SEP> BY, <SEP> KG, <SEP> KZ, <tb> <SEP> MD, <SEP> RU, <SEP> TJ, <SEP> TM), <SEP> European <SEP> patent <SEP> (AT, <SEP> BE, <SEP> CH, <SEP> CY, <SEP> DE, <tb> (71) <SEP> Applicant <SEP> (for <SEP> all <SEP> designated <SEP> States <SEP> except <SEP> US): <SEP> NORSK <SEP> DK, <SEP> ES, <SEP> FI, <SEP> FR, <SEP> GB, <SEP> GR, <SEP> IE, <SEP> IT, <SEP> LU, <SEP> MC, <SEP> NL, <SEP> PT, <SEP> SE), <tb> <SEP> HYDRO <SEP> ASA <SEP> NO/NO;
<SEP> N-0240 <SEP> Oslo <SEP> (NO). <SEP> OAPI <SEP> patent <SEP> (BF, <SEP> BJ, <SEP> CF, <SEP> CG, <SEP> CI, <SEP> CM, <SEP> GA, <SEP> GN, <SEP> GW, <SEP> ML, <tb> <SEP> MR, <SEP> NE, <SEP> SN, <SEP> TD, <SEP> TG). <tb>
(72) <SEP> Inventor; <SEP> and <tb> (75) <SEP> Inventor/Applicant <SEP> (for <SEP> US <SEP> only): <SEP> VOLD, <SEP> Rolf <SEP> [NO/NO]; <tb> <SEP> Rudslâtten, <SEP> N-2830 <SEP> Raufoss <SEP> (NO). <SEP> Published <tb> <SEP> With <SEP> international <SEP> search <SEP> report. <tb>
(74) <SEP> Agent: <SEP> RICANEK, <SEP> Ivan; <SEP> Norsk <SEP> Hydro <SEP> ASA, <SEP> N-0240 <SEP> Oslo <SEP> Before <SEP> the <SEP> expiration <SEP> of <SEP> the <SEP> time <SEP> limit <SEP> for <SEP> amending <SEP> the <tb> <SEP> (NO). <SEP> claims <SEP> and <SEP> to <SEP> be <SEP> republished <SEP> in <SEP> the <SEP> event <SEP> of <SEP> the <SEP> receipt <SEP> of <tb> <SEP> amendments. <tb>
(54) <SEP> Title: <SEP> METHOD <SEP> OF <SEP> MANUFACTURING <SEP> STRUCTURAL <SEP> MEMBERS <tb> (57) <SEP> Abstract <tb> <SEP> A <SEP> novel <SEP> method <SEP> of <SEP> manufacturing <SEP> structural <tb> members <SEP> having <SEP> closed <SEP> cross-sectional <SEP> configuration <tb> comprises <SEP> steps <SEP> of <SEP> providing <SEP> an <SEP> open <SEP> member <SEP> (2) <SEP> fol <tb> lowed <SEP> by <SEP> reshaping/folding <SEP> of <SEP> its <SEP> lateral <SEP> parts <SEP> and <SEP> join <tb> ing <SEP> of <SEP> abutted <SEP> side <SEP> walls <SEP> into <SEP> a <SEP> co-extruded <SEP> supporting <SEP> \ <SEP> \///,// <tb> longitudinally <SEP> extending <SEP> rib <SEP> (21). <SEP> The <SEP> resulting <SEP> struc <tb> tural <SEP> member <SEP> is <SEP> preferentially <SEP> a <SEP> part <SEP> of <SEP> a <SEP> vehicle <SEP> body <tb> structure, <SEP> e. <SEP> g.
<SEP> a <SEP> bumper <SEP> beam. <tb>
<SEP> 3. <SEP> 2 <tb> <SEP> 22 <tb> <SEP> 31 <tb> FOR THE PURPOSES OF INFORMATION ONLY Codes used to identify States party to the PCT on the front pages of pamphlets publishing international applications under the PCT.
AL Albania AM Armenia AT Austria AU Australia AZ Azerbaijan BA Bosnia and Herzegovina BB Barbados BE Belgium BF Burkina Faso BG Bulgaria BJ Benin BR Brazil BY Belarus CA Canada CF Central African Republic CG Congo CH Switzerland CI CBte d'lvoire CM Cameroon CN China CU Cuba CZ Czech Republic DE Germany DK Denmark EE Estonia ES Spain Fl Finland FR France GA Gabon GB United Kingdom GE Georgia GH Ghana GN Guinea GR Greece HU Hungary IE Ireland IL Israel IS Iceland IT Italy JP Japan KE Kenya KG Kyrgyzstan KP Democratic People's Republic of Korea KR Republic of Korea KZ Kazakstan LC Saint Lucia LI Liechtenstein LK Sri Lanka LR Liberia LS Lesotho LT Lithuania LU Luxembourg LV Latvia MC Monaco MD Republic of Moldova MG Madagascar MK The former Yugoslav Republic of Macedonia ML Mali MN Mongolia MR Mauritania MW Malawi MX Mexico NE Niger NL Netherlands NO Norway NZ New Zealand PL
Poland PT Portugal RO Romania RU Russian Federation SD Sudan SE Sweden SG Singapore SI Slovenia SK Slovakia SN Senegal SZ Swaziland TD Chad TG Togo TJ Tajikistan TM Turkmenistan TR Turkey TT Trinidad and Tobago UA Ukraine UG Uganda US United States of America UZ Uzbekistan VN Viet Nam YU Yugoslavia ZW Zimbabwe
PCT/NO1999/000375 1998-12-14 1999-12-10 Method of manufacturing structural members WO2000035610A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU16997/00A AU1699700A (en) 1998-12-14 1999-12-10 Method of manufacturing structural members
NO20012908A NO20012908L (en) 1998-12-14 2001-06-13 Process of producing elements

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO19985846 1998-12-14
NO985846A NO985846L (en) 1998-12-14 1998-12-14 Procedure for producing elements

Publications (1)

Publication Number Publication Date
WO2000035610A1 true WO2000035610A1 (en) 2000-06-22

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AU (1) AU1699700A (en)
NO (1) NO985846L (en)
WO (1) WO2000035610A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002004253A1 (en) * 2000-07-10 2002-01-17 Norsk Hydro Asa Method of manufacturing structural members and the members provided by such method
EP1264739A1 (en) * 2001-06-06 2002-12-11 Adlev S.r.l. Protective structure for vehicles
WO2003004316A1 (en) * 2001-07-02 2003-01-16 Meridian Automotive Systems, Inc. Stamped folded bumper beam
US7144072B2 (en) 2001-08-31 2006-12-05 Accra Teknik Ab Beam and method of making same
US7448658B2 (en) 2005-08-01 2008-11-11 Toyoda Iron Works Co., Ltd. Bumper beam for vehicle
GB2563569A (en) * 2017-05-11 2018-12-26 Univ Coventry A method of manufacturing a hollow shelled component and a component

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233552A1 (en) * 1986-02-08 1987-08-26 METZELER Gesellschaft mit beschränkter Haftung Elastic sealing
US5085902A (en) * 1989-04-07 1992-02-04 Tokai Kogyo Kabushiki Kaisha End structure of a molding for use with an automobile and process for finishing end portions of the molding
US5540016A (en) * 1990-01-09 1996-07-30 Norsk Hydro A.S. Structural beam
WO1999015365A1 (en) * 1997-09-22 1999-04-01 Norsk Hydro Asa Bumper, and the fabrication thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233552A1 (en) * 1986-02-08 1987-08-26 METZELER Gesellschaft mit beschränkter Haftung Elastic sealing
US5085902A (en) * 1989-04-07 1992-02-04 Tokai Kogyo Kabushiki Kaisha End structure of a molding for use with an automobile and process for finishing end portions of the molding
US5540016A (en) * 1990-01-09 1996-07-30 Norsk Hydro A.S. Structural beam
WO1999015365A1 (en) * 1997-09-22 1999-04-01 Norsk Hydro Asa Bumper, and the fabrication thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002004253A1 (en) * 2000-07-10 2002-01-17 Norsk Hydro Asa Method of manufacturing structural members and the members provided by such method
EP1264739A1 (en) * 2001-06-06 2002-12-11 Adlev S.r.l. Protective structure for vehicles
US6857690B2 (en) 2001-06-06 2005-02-22 Adlev S.R.L. Protective structure for vehicles
WO2003004316A1 (en) * 2001-07-02 2003-01-16 Meridian Automotive Systems, Inc. Stamped folded bumper beam
US6926320B2 (en) 2001-07-02 2005-08-09 Meridian Automotive Systems, Inc. Stamped folded bumper beam
US7144072B2 (en) 2001-08-31 2006-12-05 Accra Teknik Ab Beam and method of making same
US7448658B2 (en) 2005-08-01 2008-11-11 Toyoda Iron Works Co., Ltd. Bumper beam for vehicle
GB2563569A (en) * 2017-05-11 2018-12-26 Univ Coventry A method of manufacturing a hollow shelled component and a component

Also Published As

Publication number Publication date
NO985846L (en) 2000-06-15
AU1699700A (en) 2000-07-03
NO985846D0 (en) 1998-12-14

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