ES351831A1 - A process for bending tubes - Google Patents

A process for bending tubes

Info

Publication number
ES351831A1
ES351831A1 ES351831A ES351831A ES351831A1 ES 351831 A1 ES351831 A1 ES 351831A1 ES 351831 A ES351831 A ES 351831A ES 351831 A ES351831 A ES 351831A ES 351831 A1 ES351831 A1 ES 351831A1
Authority
ES
Spain
Prior art keywords
tube
bend
outside
initial length
alloy
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
Application number
ES351831A
Other languages
Spanish (es)
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of ES351831A1 publication Critical patent/ES351831A1/en
Expired legal-status Critical Current

Links

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
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/283—Making U-pieces
    • 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
    • B21C37/30—Finishing tubes, e.g. sizing, burnishing
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • 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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
    • B21D9/03—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length and built-up from loose elements, e.g. series of balls
    • 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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/10—Bending tubes using mandrels or the like by passing between rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

A tube is cold bent by simultaneously keeping the inner surface of the outside of the bend at its initial length and compressing the inside of the bend. A tube 6 e.g. Ti, Zr is first filled with a Bi, Sn, Cd alloy which expands on solidifying, metal wires having a higher tensile strength than the tube 6 being embedded in the alloy adjacent the tube wall which is to form the outside of the bend. The tube 6 is reciprocated between driven rollers 1, 10, during which movement a carriage 25 is moved by a screw 27 or an hydraulic jack to cause rollers 19, 20 mounted thereon to bend the tube over the driving roller 1. The tube wall on the inside of the bend is caused to be compressed and thickened whilst the opposite wall portion is kept at its initial length.
ES351831A 1967-03-21 1968-03-21 A process for bending tubes Expired ES351831A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR99711A FR1523377A (en) 1967-03-21 1967-03-21 Method and device for bending and calibrating tubes

Publications (1)

Publication Number Publication Date
ES351831A1 true ES351831A1 (en) 1969-06-16

Family

ID=8627324

Family Applications (1)

Application Number Title Priority Date Filing Date
ES351831A Expired ES351831A1 (en) 1967-03-21 1968-03-21 A process for bending tubes

Country Status (5)

Country Link
BE (1) BE710439A (en)
ES (1) ES351831A1 (en)
FR (1) FR1523377A (en)
GB (1) GB1222218A (en)
LU (1) LU55525A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2635476A1 (en) * 1988-08-18 1990-02-23 Soferal Sarl Machine for the manufacture of coupling elbows
CN108655226A (en) * 2018-06-29 2018-10-16 中国电建集团核电工程有限公司 The flat bending machine of Multifunction flat molten steel
CN111299375A (en) * 2020-03-03 2020-06-19 米伦医疗科技(苏州)有限公司 Radian forming mechanism of transverse rod of walking aid

Also Published As

Publication number Publication date
FR1523377A (en) 1968-05-03
GB1222218A (en) 1971-02-10
LU55525A1 (en) 1968-05-03
BE710439A (en) 1968-06-17

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