GB1384738A - Method of reducing the cross-sectional area of billets - Google Patents

Method of reducing the cross-sectional area of billets

Info

Publication number
GB1384738A
GB1384738A GB1255272A GB1255272A GB1384738A GB 1384738 A GB1384738 A GB 1384738A GB 1255272 A GB1255272 A GB 1255272A GB 1255272 A GB1255272 A GB 1255272A GB 1384738 A GB1384738 A GB 1384738A
Authority
GB
United Kingdom
Prior art keywords
extrusion
billet
pressure
march
die
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
GB1255272A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB1384738A publication Critical patent/GB1384738A/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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/007—Hydrostatic extrusion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Metal Extraction Processes (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

1384738 Extrusion ALLMANNA SVENSKA ELEKTRISKA AB 17 March 1972 [18 March 1971] 12552/72 Heading B3P In a method of hydrostatically extruding a billet 11 the billet is initially extruded to form a leading part to which a drawing force is applied to assist the hydrostatic extrusion, the extrusion die 14 being surrounded by hydrostatic pressure to counteract stress caused during the combined drawing and extrusion. The leading end of the billet may be conical or double conical 17, 18, Fig. 3, so that the initial extrusion may be at a low pressure. The cone angle of the leading part of the billet is less than that of the die. The drawing force is applied by a member 15 which may operate a limit switch to stop the extrusion by controlling the movement of the plunger 16 and the member. A pressure limiter may be provided in the pressure chamber 13. The billet may be steel or a compound material and the extruded product may be solid or tubular.
GB1255272A 1971-03-18 1972-03-17 Method of reducing the cross-sectional area of billets Expired GB1384738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE348671 1971-03-18

Publications (1)

Publication Number Publication Date
GB1384738A true GB1384738A (en) 1975-02-19

Family

ID=20262233

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1255272A Expired GB1384738A (en) 1971-03-18 1972-03-17 Method of reducing the cross-sectional area of billets

Country Status (3)

Country Link
US (1) US3747384A (en)
DE (1) DE2212401A1 (en)
GB (1) GB1384738A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014011067A1 (en) * 2012-07-13 2014-01-16 Instytut Wysokich Cisnien Polskiej Akademii Nauk Method of producing high-strengh rods of austenitic steel and a rod produced by such a method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973428A (en) * 1975-04-07 1976-08-10 Westinghouse Electric Corporation Uniform land length die
US5893287A (en) * 1997-03-14 1999-04-13 Project 3-P Precise Pipe Production Ltd. Method and device for combined drawing and hydrostatic extrusion of billets from metal and alloys

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558035A (en) * 1947-07-05 1951-06-26 Percy W Bridgman Method and apparatus for cold drawing
US3328998A (en) * 1964-12-17 1967-07-04 Battelle Development Corp High-reduction drawing
GB1188116A (en) * 1966-09-15 1970-04-15 Atomic Energy Authority Uk Improvements in or relating to Hydrostatic Extrusion Processes
SE345399B (en) * 1967-06-30 1972-05-29 Asea Ab
US3618351A (en) * 1968-05-03 1971-11-09 Atomic Energy Authority Uk Hydrostatic extrusion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014011067A1 (en) * 2012-07-13 2014-01-16 Instytut Wysokich Cisnien Polskiej Akademii Nauk Method of producing high-strengh rods of austenitic steel and a rod produced by such a method
US10046374B2 (en) 2012-07-13 2018-08-14 Instytut Wysokich Cisnien Polskiej Akademii Nauk Method of producing high-strength rods of austenitic steel and a rod produced by such method

Also Published As

Publication number Publication date
US3747384A (en) 1973-07-24
DE2212401A1 (en) 1972-10-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee