GB386518A - Method of extruding metal sections with progressively diminishing cross-section - Google Patents

Method of extruding metal sections with progressively diminishing cross-section

Info

Publication number
GB386518A
GB386518A GB1436032A GB1436032A GB386518A GB 386518 A GB386518 A GB 386518A GB 1436032 A GB1436032 A GB 1436032A GB 1436032 A GB1436032 A GB 1436032A GB 386518 A GB386518 A GB 386518A
Authority
GB
United Kingdom
Prior art keywords
mandrel
section
girders
taper
billet
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
GB1436032A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB1436032A priority Critical patent/GB386518A/en
Publication of GB386518A publication Critical patent/GB386518A/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
    • B21C25/00—Profiling tools for metal extruding
    • B21C25/08—Dies or mandrels with section variable during extruding, e.g. for making tapered work; Controlling variation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Extrusion Of Metal (AREA)

Abstract

386,518. Squirting. MOND, A. L., 19, Southampton Buildings, Chancery Lane, London.-(I. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany.) May 20, 1932, No. 14360. [Classes 83 (ii) and 83 (iv).] Making bars.- Girders, tubes, &c. of progressively -diminishing thickness of metal are formed by extruding a billet e through a die b with the use of a mandrel d of rapidly tapering cross section which travels through the die. A tube so formed has a constant outer but an increasing inner diameter. Girders with flanges steadily decreasing in thickness may be similarly formed with the use of one or more tapered mandrel members. In the formation of a form g, Fig. 4b, tapered in the same direction on the inner and outer faces, the outer part of the mandrel f is formed of a series of flat springs which yield to allow the section which is of slower taper than the mandrel, to expand the mandrel freely. The mandrel d may, if necessary be detachably secured to the ram c and be formed of a number of detachable parts. The mandrel may be formed to produce a steady taper, or the billet may not be shaped exactly to fit the mandrel, but itself be formed, when cast, to produce a steady taper. The process is applicable to alloys of copper, lead, aluminium, and magnesium, and to girders for aircraft.
GB1436032A 1932-05-20 1932-05-20 Method of extruding metal sections with progressively diminishing cross-section Expired GB386518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1436032A GB386518A (en) 1932-05-20 1932-05-20 Method of extruding metal sections with progressively diminishing cross-section

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1436032A GB386518A (en) 1932-05-20 1932-05-20 Method of extruding metal sections with progressively diminishing cross-section

Publications (1)

Publication Number Publication Date
GB386518A true GB386518A (en) 1933-01-19

Family

ID=10039789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1436032A Expired GB386518A (en) 1932-05-20 1932-05-20 Method of extruding metal sections with progressively diminishing cross-section

Country Status (1)

Country Link
GB (1) GB386518A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512264A (en) * 1948-10-06 1950-06-20 Charles A Brauchler Method of making propeller blades

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512264A (en) * 1948-10-06 1950-06-20 Charles A Brauchler Method of making propeller blades

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