GB773934A - Improvements in the manufacture of tubular elements - Google Patents

Improvements in the manufacture of tubular elements

Info

Publication number
GB773934A
GB773934A GB23572/55A GB2357255A GB773934A GB 773934 A GB773934 A GB 773934A GB 23572/55 A GB23572/55 A GB 23572/55A GB 2357255 A GB2357255 A GB 2357255A GB 773934 A GB773934 A GB 773934A
Authority
GB
United Kingdom
Prior art keywords
region
compression
tube
lip
bent
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
GB23572/55A
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 GB773934A publication Critical patent/GB773934A/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
    • B21C37/29—Making branched pieces, e.g. T-pieces

Landscapes

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

Abstract

773,934. Making pipe fittings. HUET, A. Aug. 16, 1955 [Nov. 5, 1954], No. 23572/55. Addition to 759,019. Classes 83 (2) and 83 (4). Forging.-In a modification or improvement of the method of manufacturing a branch aperture or nipple on a bent tube as disclosed in the parent Specification, the bent tube a has oblique or divergent limbs which offer the advantage of giving an increased passage section in the bent region where such passage is ogival in shape. The tube is slit along a straight line C, D in the region it is desired to obtain the branch aperture and the bent region is then heated and compressed between dies d<SP>1</SP> and d2 which apply a compression in the direction of the slit which opens during the compression, while the wall of the tube is driven back to form the lip g of the nipple. A mandrel k is introduced into the slit during the compression to calibrate the lip g and is applied against the bottom wall E of the bend which is supported in a fixed abutment l. To increase the height of the lip the mandrel is forced against the wall region E, thus reducing the increased wall thickness at this point and displacing metal towards the opening. This operation of driving metal back from the region E may take place before or after the dies d<SP>1</SP> and d<SP>2</SP> effect the compression. Finally, the divergent limbs of the bend a<SP>1</SP> provided with the branch aperture may be brought parallel to one another.
GB23572/55A 1954-11-05 1955-08-16 Improvements in the manufacture of tubular elements Expired GB773934A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR773934X 1954-11-05

Publications (1)

Publication Number Publication Date
GB773934A true GB773934A (en) 1957-05-01

Family

ID=9199380

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23572/55A Expired GB773934A (en) 1954-11-05 1955-08-16 Improvements in the manufacture of tubular elements

Country Status (1)

Country Link
GB (1) GB773934A (en)

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