GB772134A - Improvements in or relating to the manufacture of flexible metal tubes - Google Patents

Improvements in or relating to the manufacture of flexible metal tubes

Info

Publication number
GB772134A
GB772134A GB33124/55A GB3312455A GB772134A GB 772134 A GB772134 A GB 772134A GB 33124/55 A GB33124/55 A GB 33124/55A GB 3312455 A GB3312455 A GB 3312455A GB 772134 A GB772134 A GB 772134A
Authority
GB
United Kingdom
Prior art keywords
tube
corrugated
mandrel
corrugations
resilient
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
GB33124/55A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB772134A publication Critical patent/GB772134A/en
Expired 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
    • B21D15/00—Corrugating tubes
    • B21D15/04—Corrugating tubes transversely, e.g. helically
    • B21D15/10—Corrugating tubes transversely, e.g. helically by applying fluid pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

772,134. Making corrugated tubes. DEBENEDETTI, R. Nov. 18, 1955 [Nov. 22, 1954], No. 33124/55. Classes 83 (2) and 83 (4). A process for manufacturing flexible metal tubes of the corrugated type is characterized in that the corrugations are obtained by fluid pressure acting on an annular zone of the tube corresponding to one corrugation through the wall of a member made of rubber or other resilient material. The apparatus comprises a mandrel 1 having an axial bore 2 terminating in radial bores 3 communicating with an annular recess 4 provided'in the external centre portion of the mandrel. Surrounding the mandrel is a resilient tubular member 6, e.g. of rubber, secured thereto by metal tubular members 7 and 8 over which passes the tube to be corrugated. A corrugated die 10 surrounds the assembly. In operation fluid pressure is directed along bores 2 and 3 and into the recess 4 where the fluid-pressure acts on the resilient member 6 to form a corrugation in the tube. As the tube is free to slide between the ungrooved portion of the die and the tubular-member 7 no stretching of the material takes place. The shape of the corrugations may be subsequently modified by shaped rollers, if desired. The tube may be of stainless steel of any thickness or having multiple walls. Corrugations of various heights may be obtained by varying the fluid pressure. The resilient member may have a variable section, e.g. corrugated, and may be fixed to the mandrel with axial precompression to avoid excessive stretch of the member.
GB33124/55A 1954-11-22 1955-11-18 Improvements in or relating to the manufacture of flexible metal tubes Expired GB772134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT772134X 1954-11-22

Publications (1)

Publication Number Publication Date
GB772134A true GB772134A (en) 1957-04-10

Family

ID=11316166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33124/55A Expired GB772134A (en) 1954-11-22 1955-11-18 Improvements in or relating to the manufacture of flexible metal tubes

Country Status (1)

Country Link
GB (1) GB772134A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099311A (en) * 1959-11-02 1963-07-30 Grotnes Machine Works Inc Procedure and apparatus for making drums and the like
US3280608A (en) * 1959-07-28 1966-10-25 Arthur R Parilla Incremental tube or vessel expander
US4498220A (en) * 1982-08-23 1985-02-12 The Trane Company Method for pre-expanding heat exchanger tube
US4840053A (en) * 1987-07-29 1989-06-20 Mitsui & Co., Ltd. Method for manufacturing a pipe with projections
US4928509A (en) * 1987-07-29 1990-05-29 Mitsui & Co., Ltd. Method for manufacturing a pipe with projections
EP0523361A1 (en) * 1991-07-16 1993-01-20 Gesellschaft für Innenhochdruckverfahren mbH & Co.KG Pipe with ribs and method for making the same
CN101885018A (en) * 2010-07-27 2010-11-17 哈尔滨工业大学 Viscoelasto-plastic soft mode forming method of minor-radius corrugated surface thin-wall metal barrel part
CN103071710A (en) * 2013-02-01 2013-05-01 吕季明 Hydraulic volume control forming device for metal corrugated pipe
CN110227748A (en) * 2019-06-25 2019-09-13 中国航发贵州黎阳航空动力有限公司 A kind of minor diameter thin wall wavy metal pipe forming apparatus and method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3280608A (en) * 1959-07-28 1966-10-25 Arthur R Parilla Incremental tube or vessel expander
US3099311A (en) * 1959-11-02 1963-07-30 Grotnes Machine Works Inc Procedure and apparatus for making drums and the like
US4498220A (en) * 1982-08-23 1985-02-12 The Trane Company Method for pre-expanding heat exchanger tube
US4840053A (en) * 1987-07-29 1989-06-20 Mitsui & Co., Ltd. Method for manufacturing a pipe with projections
US4928509A (en) * 1987-07-29 1990-05-29 Mitsui & Co., Ltd. Method for manufacturing a pipe with projections
EP0523361A1 (en) * 1991-07-16 1993-01-20 Gesellschaft für Innenhochdruckverfahren mbH & Co.KG Pipe with ribs and method for making the same
CN101885018A (en) * 2010-07-27 2010-11-17 哈尔滨工业大学 Viscoelasto-plastic soft mode forming method of minor-radius corrugated surface thin-wall metal barrel part
CN101885018B (en) * 2010-07-27 2013-05-29 哈尔滨工业大学 Viscoelasto-plastic soft mode forming method of minor-radius corrugated surface thin-wall metal barrel part
CN103071710A (en) * 2013-02-01 2013-05-01 吕季明 Hydraulic volume control forming device for metal corrugated pipe
CN110227748A (en) * 2019-06-25 2019-09-13 中国航发贵州黎阳航空动力有限公司 A kind of minor diameter thin wall wavy metal pipe forming apparatus and method
CN110227748B (en) * 2019-06-25 2021-02-23 中国航发贵州黎阳航空动力有限公司 Forming device and method for small-diameter thin-wall metal corrugated pipe

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