GB1297690A - - Google Patents

Info

Publication number
GB1297690A
GB1297690A GB1297690DA GB1297690A GB 1297690 A GB1297690 A GB 1297690A GB 1297690D A GB1297690D A GB 1297690DA GB 1297690 A GB1297690 A GB 1297690A
Authority
GB
United Kingdom
Prior art keywords
billet
piercing
ring
extrusion
extruding
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
Other languages
English (en)
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 GB1297690A publication Critical patent/GB1297690A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/10—Piercing billets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Extrusion Of Metal (AREA)
  • Lubricants (AREA)
GB1297690D 1969-11-26 1970-11-24 Expired GB1297690A (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6940768A FR2069879A1 (cs) 1969-11-26 1969-11-26

Publications (1)

Publication Number Publication Date
GB1297690A true GB1297690A (cs) 1972-11-29

Family

ID=9043662

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1297690D Expired GB1297690A (cs) 1969-11-26 1970-11-24

Country Status (6)

Country Link
US (1) US3712103A (cs)
AT (1) AT303493B (cs)
DE (1) DE2057629A1 (cs)
FR (1) FR2069879A1 (cs)
GB (1) GB1297690A (cs)
ZA (1) ZA708022B (cs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4085606A (en) * 1976-12-09 1978-04-25 Westinghouse Electric Corporation Hydrostatic extrusion apparatus for producing hollow elongated bodies of rectangular cross section
CN100551564C (zh) * 2005-06-14 2009-10-21 住友金属工业株式会社 一种穿孔机和用于穿孔机的顶头及无缝管的制造方法
JP4518205B2 (ja) * 2008-12-01 2010-08-04 住友金属工業株式会社 熱間穿孔用上面ガラス成形材および熱間押出製管用ビレットの製造方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1802785A (en) * 1924-10-11 1931-04-28 Singer Fritz Method of extruding long seamless tubing
DE728356C (de) * 1939-10-03 1942-11-25 Mannesmann Ag Verfahren zum Strangpressen von Rohren
US2320071A (en) * 1940-11-23 1943-05-25 Ferrex Corp Apparatus for extruding metals
GB1150171A (en) * 1966-04-19 1969-04-30 Chesterfield Tube Company Ltd Formation of Hollow Metal Billets.
US3580038A (en) * 1968-04-03 1971-05-25 Cefilac Extrusion mandrel and method
FR1601305A (cs) * 1968-06-26 1970-08-17

Also Published As

Publication number Publication date
FR2069879A1 (cs) 1971-09-10
AT303493B (de) 1972-10-15
DE2057629A1 (de) 1971-06-09
US3712103A (en) 1973-01-23
ZA708022B (en) 1971-08-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees