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GB1227290A - - Google Patents

Info

Publication number
GB1227290A
GB1227290A GB1227290DA GB1227290A GB 1227290 A GB1227290 A GB 1227290A GB 1227290D A GB1227290D A GB 1227290DA GB 1227290 A GB1227290 A GB 1227290A
Authority
GB
United Kingdom
Prior art keywords
mandrel
extrusion
billet
tube
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
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 filed Critical
Publication of GB1227290A publication Critical patent/GB1227290A/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
    • B21C23/21—Presses specially adapted for extruding metal
    • B21C23/217—Tube extrusion presses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)

Abstract

1,227,290. Extruding; billet piercing. CALUMET & HECLA CORP. 15 Sept., 1969 [7 Oct., 1968], No. 45389/69. Headings B3H and B3P. A tube extrusion press has a mandrel 20 with a shaped tip comprising a cylindrical portion 24 which is held into the extrusion die 10 during extrusion and a larger portion 22 which is moved into the die after extrusion to sever the tube from the billet discard. The mandrel is moved hydraulically and held during the extrusion step by retractable U-shaped stops 36. After extrusion the stops are retracted to allow a mandrel guide 34 to move on to fixed nuts 52. The mandrel may be used to pierce the billet initially. It has a cooling duct 60 leading to a concave forward face 80. The tip is screwed into the mandrel 20 and has flats (82), Fig. 11 (not shown), engageable by a wrench. The billet is extruded by an hydraulic ram 40 acting through a pressure pad 44 and the cooling fluid from the mandrel passes as steam along the tube.
GB1227290D 1968-10-07 1969-09-15 Expired GB1227290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76540668A 1968-10-07 1968-10-07

Publications (1)

Publication Number Publication Date
GB1227290A true GB1227290A (en) 1971-04-07

Family

ID=25073478

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1227290D Expired GB1227290A (en) 1968-10-07 1969-09-15

Country Status (3)

Country Link
US (1) US3580037A (en)
DE (1) DE1950587A1 (en)
GB (1) GB1227290A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394338A1 (en) * 1977-06-14 1979-01-12 Benteler Geb Paderwerk Leading end of tube extrusion punch - has compound curved shape which extends life expectancy of punch

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE412171B (en) * 1973-06-08 1980-02-25 Atomic Energy Authority Uk SET TO STRESS A RUDE MATERIAL LENGTH
SE413995B (en) * 1977-02-07 1980-07-07 Asea Ab PRESSURE FOR HYDROSTATIC STRESS PRESSURE OF RODS
US4781053A (en) * 1986-03-05 1988-11-01 Stewart Charles L Indirect extrusion process and machinery therefor
US5687604A (en) * 1996-05-30 1997-11-18 Exco Technologies Ltd. Thermal controlled mandrel with replaceable tip for copper and brass extrusion
CN106903178B (en) * 2017-02-17 2019-06-18 清华大学 An extruder with a combined extrusion shaft

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2296A (en) * 1841-10-11 Machine for making pipes or tubes ot lead
US861194A (en) * 1904-01-29 1907-07-23 Arnold Schwieger Hydraulic press.
US2063563A (en) * 1934-08-27 1936-12-08 Sparks Processes Inc Manufacture of extruded metal shapes by hot hydraulic extrusion
US2698683A (en) * 1951-04-23 1955-01-04 Calumet & Hecla Extrusion press having mandrel cooling means
FR1051050A (en) * 1952-02-25 1954-01-12 Comptoir Ind Etirage Quick adjustment device for the length of a hot tube extrusion mandrel
US2713941A (en) * 1952-09-02 1955-07-26 Calumet & Hecla Apparatus for extruding tubing
US2896783A (en) * 1954-07-06 1959-07-28 Lake Erie Machinery Corp Mandrel positioning and ram arresting apparatus
US3116834A (en) * 1960-12-22 1964-01-07 Baldwin Lima Hamilton Corp Extrusion of metal tubing
US3296848A (en) * 1963-10-21 1967-01-10 Reynolds Metals Co Method and apparatus for extruding tubular members from solid billets or the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394338A1 (en) * 1977-06-14 1979-01-12 Benteler Geb Paderwerk Leading end of tube extrusion punch - has compound curved shape which extends life expectancy of punch

Also Published As

Publication number Publication date
US3580037A (en) 1971-05-25
DE1950587A1 (en) 1970-06-18

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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