GB1437238A - Working of metal tube - Google Patents

Working of metal tube

Info

Publication number
GB1437238A
GB1437238A GB4899373A GB4899373A GB1437238A GB 1437238 A GB1437238 A GB 1437238A GB 4899373 A GB4899373 A GB 4899373A GB 4899373 A GB4899373 A GB 4899373A GB 1437238 A GB1437238 A GB 1437238A
Authority
GB
United Kingdom
Prior art keywords
tube
heating
end portion
forming
mandrel
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
GB4899373A
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.)
BROWNHILLS SHEET METAL ENG CO
Original Assignee
BROWNHILLS SHEET METAL ENG CO
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 BROWNHILLS SHEET METAL ENG CO filed Critical BROWNHILLS SHEET METAL ENG CO
Priority to GB4899373A priority Critical patent/GB1437238A/en
Publication of GB1437238A publication Critical patent/GB1437238A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/12—Shaping end portions of hollow articles
    • 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
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/04—Reducing; Closing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

1437238 Forging; stamping BROWNHILLS SHEET METAL & ENG CO Ltd 17 Jan 1975 [20 Oct 1973] 48993/73 Headings B3H and B3Q A square shoulder is formed on the end of a tube 4, e.g. a scaffolding tube, by forming a tapered or rounded shoulder on an end portion of the tube, heating the end portion to red heat and advancing an annular die 10 along the end portion to form the square shoulder against a mandrel 1. The initial forming may be performed by one or more annular dies 8, 9 mounted for axial movement by an adjustable stroke hydraulic ram. The dies 8-10 are mounted on a common holder for transverse displacement. The tube is mounted on the mandrel 1 during all the forming steps but may be removed for heating. The heating is effected by a ring of gas burners.
GB4899373A 1973-10-20 1973-10-20 Working of metal tube Expired GB1437238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4899373A GB1437238A (en) 1973-10-20 1973-10-20 Working of metal tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4899373A GB1437238A (en) 1973-10-20 1973-10-20 Working of metal tube

Publications (1)

Publication Number Publication Date
GB1437238A true GB1437238A (en) 1976-05-26

Family

ID=10450736

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4899373A Expired GB1437238A (en) 1973-10-20 1973-10-20 Working of metal tube

Country Status (1)

Country Link
GB (1) GB1437238A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382324A (en) * 1979-12-13 1983-05-10 Mannesmann Aktiengesellschaft Method of making a light-weight, two-wheel set
CN109954808A (en) * 2017-12-26 2019-07-02 重庆达德机械制造有限公司 A kind of device reducing bend pipe aperture
BE1027747B1 (en) * 2019-11-12 2021-06-15 Arel Bvba Deforming one end of a pole

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382324A (en) * 1979-12-13 1983-05-10 Mannesmann Aktiengesellschaft Method of making a light-weight, two-wheel set
CN109954808A (en) * 2017-12-26 2019-07-02 重庆达德机械制造有限公司 A kind of device reducing bend pipe aperture
BE1027747B1 (en) * 2019-11-12 2021-06-15 Arel Bvba Deforming one end of a pole

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee