ES2102801T5 - PROCEDURE FOR THE MOLDING OF METAL HOLLOW PROFILES WITH SUPPORT OF INTERNAL PRESSURE. - Google Patents

PROCEDURE FOR THE MOLDING OF METAL HOLLOW PROFILES WITH SUPPORT OF INTERNAL PRESSURE.

Info

Publication number
ES2102801T5
ES2102801T5 ES94890118T ES94890118T ES2102801T5 ES 2102801 T5 ES2102801 T5 ES 2102801T5 ES 94890118 T ES94890118 T ES 94890118T ES 94890118 T ES94890118 T ES 94890118T ES 2102801 T5 ES2102801 T5 ES 2102801T5
Authority
ES
Spain
Prior art keywords
pressure
blank
procedure
internal pressure
molding
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES94890118T
Other languages
Spanish (es)
Other versions
ES2102801T3 (en
Inventor
Gerfried Auer
Ernst Dr Bitsche
Alexander Dipl-Ing Dr Renner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ELB FORM GmbH
Original Assignee
ELB FORM GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3511912&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2102801(T5) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ELB FORM GmbH filed Critical ELB FORM GmbH
Application granted granted Critical
Publication of ES2102801T3 publication Critical patent/ES2102801T3/en
Publication of ES2102801T5 publication Critical patent/ES2102801T5/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/037—Forming branched 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
    • 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
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/29—Making branched pieces, e.g. T-pieces
    • B21C37/294—Forming collars by compressing a fluid or a yieldable or resilient mass in the tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Forging (AREA)

Abstract

In the method described for forming hollow metallic profiles with the assistance of internal pressure to give workpieces (1) provided with branches or the like (12), a liquid pressure medium is fed to the interior of the blank, which is mounted in a die (2) and is brought into engagement at its two ends with movable press rams (3, 4), and the blank is pressed into at least one cavity (7) in the die (2) with the aid of the press rams, expanding in the process; during this procedure, the pressure (pi) of the pressure medium in the interior of the blank, which is closed off by the press rams (3, 4) and is heat-treated before the pressing operation, is controlled as a function of the progress made in pressing, the pressure (pi) being set in such a way in process phases in which there is little stretching of the material of the blank that essentially the yield strength of the material is just reached, whereas, in process phases in which the stretching is great, the pressure (pi) is increased in order to raise the breaking elongation of the material. <IMAGE>
ES94890118T 1993-07-08 1994-07-08 PROCEDURE FOR THE MOLDING OF METAL HOLLOW PROFILES WITH SUPPORT OF INTERNAL PRESSURE. Expired - Lifetime ES2102801T5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0134693A ATA134693A (en) 1993-07-08 1993-07-08 METHOD FOR INNER PRESSURE-BASED FORMING OF METAL HOLLOW PROFILES AND DEVICE FOR IMPLEMENTING THIS METHOD

Publications (2)

Publication Number Publication Date
ES2102801T3 ES2102801T3 (en) 1997-08-01
ES2102801T5 true ES2102801T5 (en) 2000-04-16

Family

ID=3511912

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94890118T Expired - Lifetime ES2102801T5 (en) 1993-07-08 1994-07-08 PROCEDURE FOR THE MOLDING OF METAL HOLLOW PROFILES WITH SUPPORT OF INTERNAL PRESSURE.

Country Status (4)

Country Link
EP (1) EP0633075B2 (en)
AT (2) ATA134693A (en)
DE (1) DE59402350D1 (en)
ES (1) ES2102801T5 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6128936A (en) * 1998-09-09 2000-10-10 Kabushiki Kaisha Opton Bulging device and bulging method
FR2787357B1 (en) 1998-12-18 2001-03-16 Tubes Et Formes METHOD AND APPARATUS FOR HYDROFORMING AN INCLINED PIPE FROM A METAL TUBE
US7832244B2 (en) 2008-03-13 2010-11-16 Gm Global Technology Operations, Inc. Controlling fluid pressure in a hydroforming process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331430A (en) † 1941-08-27 1943-10-12 Chase Brass & Copper Co Apparatus for making hollow articles
FR1048482A (en) * 1950-09-18 1953-12-22 Ici Ltd Manufacture of branch pipe fittings
GB1083354A (en) † 1963-12-21 1967-09-13 Agency Ind Science Techn A liquid pressure bulge forming apparatus and process
US3350905A (en) * 1963-12-21 1967-11-07 Agency Ind Science Techn Liquid pressure bulge forming apparatus
FR2477918A1 (en) * 1980-03-13 1981-09-18 Vallourec IMPROVED PROCESS FOR MANUFACTURING PARTS BY HYDROFLAMBING AND DEVICE FOR CARRYING OUT SAID METHOD

Also Published As

Publication number Publication date
EP0633075B1 (en) 1997-04-09
ES2102801T3 (en) 1997-08-01
DE59402350D1 (en) 1997-05-15
EP0633075A1 (en) 1995-01-11
ATA134693A (en) 1999-10-15
EP0633075B2 (en) 1999-12-22
ATE151317T1 (en) 1997-04-15

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