GB556471A - Improvements in or relating to method and apparatus for radially contracting tubular metal bodies - Google Patents

Improvements in or relating to method and apparatus for radially contracting tubular metal bodies

Info

Publication number
GB556471A
GB556471A GB4414/42A GB441442A GB556471A GB 556471 A GB556471 A GB 556471A GB 4414/42 A GB4414/42 A GB 4414/42A GB 441442 A GB441442 A GB 441442A GB 556471 A GB556471 A GB 556471A
Authority
GB
United Kingdom
Prior art keywords
ring
mould
mandrel
fluid pressure
sleeve
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
GB4414/42A
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.)
United States Pipe and Foundry Co LLC
Original Assignee
United States Pipe and Foundry Co LLC
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 United States Pipe and Foundry Co LLC filed Critical United States Pipe and Foundry Co LLC
Publication of GB556471A publication Critical patent/GB556471A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • 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
    • 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
    • B21D26/043—Means for controlling the axial pusher
    • 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
    • B21D26/045—Closing or sealing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Gripping On Spindles (AREA)

Abstract

556,471. Stamping. UNITED STATES PIPE & FOUNDRY CO. April 2, 1942, No. 4414. Convention date, June 21, 1941. [Classes 83 (ii) and 83 (iv)] Tubes are contracted on to a mandrel at the same time becoming elongated, by the application of fluid pressure to the exterior. The process is particularly applicable for reconditioning moulds for the centrifugal casting of pipes. A substantial chamber 10 with a head 16 has the end closed by a steel plate 30 with a heavy backing plate 31 held on by bolts that do not extend into the head as far as the part that is subjected to the fluid pressure to avoid weakening the section. The chamber is bored to take the mould 13 with slight clearance and is contained in the head to take the socket end. A spacing ring 22 supports a U-section leather packing ring 21 with a backing ring 20 engaging the flange 19 of the mould that fits the bore. The mandrel 12 has an integral or inserted screw 25 on which is mounted a separate section 24 for the socket clamped in place by a nut 26. One or more filling blocks 28, 29 are provided. - The parts 24, 28 and 29 are tapped for eye-bolts for use in handling. The spigot end of the mould is spaced from the mandrel by a rigid sleeve 34 tapered at 35 so that when the mould is contracted it will not form a shoulder at the end of the sleeve. The sleeve is flanged at 26 for clamping in place by a two part ring flanged at 37, 39, this latter flange engaging a groove in the mould and fitting the bore in the chamber. The parts are dowelled and held together by a spring ring 43 in a groove 44, and the end is bevelled at 48 to facilitate introduction into the bore. Seal against fluid pressure is effected by a steel ring 45, a fibre or tin-lead alloy ring 46 and U-section leather ring 47. The fluid pressure admitted at 49 acting on these parts tends to elongate the mould and the mandrel is lubricated to facilitate the sliding of the sleeve 34. Specifications 334,634, 334,960, [both in Class 83 (ii)], 350,336 and 352,824 are referred to.
GB4414/42A 1941-06-21 1942-04-02 Improvements in or relating to method and apparatus for radially contracting tubular metal bodies Expired GB556471A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US556471XA 1941-06-21 1941-06-21

Publications (1)

Publication Number Publication Date
GB556471A true GB556471A (en) 1943-10-06

Family

ID=21999242

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4414/42A Expired GB556471A (en) 1941-06-21 1942-04-02 Improvements in or relating to method and apparatus for radially contracting tubular metal bodies

Country Status (1)

Country Link
GB (1) GB556471A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013250B (en) * 1955-03-08 1957-08-08 Anton Mueller Dipl Ing Method and device for stepwise reduction of tubes over a conical mandrel
GB2174320A (en) * 1985-04-19 1986-11-05 Kabel Metallwerke Ghh Mould for continuous casting
CN104226778A (en) * 2014-09-17 2014-12-24 南京理工大学 Miniature pipe two-way hydraulic forming mold

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013250B (en) * 1955-03-08 1957-08-08 Anton Mueller Dipl Ing Method and device for stepwise reduction of tubes over a conical mandrel
GB2174320A (en) * 1985-04-19 1986-11-05 Kabel Metallwerke Ghh Mould for continuous casting
CN104226778A (en) * 2014-09-17 2014-12-24 南京理工大学 Miniature pipe two-way hydraulic forming mold

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