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GB1485328A - Piercing an extrusion billet - Google Patents

Piercing an extrusion billet

Info

Publication number
GB1485328A
GB1485328A GB47954/75A GB4795475A GB1485328A GB 1485328 A GB1485328 A GB 1485328A GB 47954/75 A GB47954/75 A GB 47954/75A GB 4795475 A GB4795475 A GB 4795475A GB 1485328 A GB1485328 A GB 1485328A
Authority
GB
United Kingdom
Prior art keywords
piercing
billet
extrusion
mandrel
boss
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
GB47954/75A
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.)
SMS Siemag AG
Original Assignee
Schloemann Siemag 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 Schloemann Siemag AG filed Critical Schloemann Siemag AG
Publication of GB1485328A publication Critical patent/GB1485328A/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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, rods or tubes
    • B21C23/085—Making tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/01—Extruding metal; Impact extrusion starting from material of particular form or shape, e.g. mechanically pre-treated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/03—Making uncoated products by both direct and backward extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/04—Piercing presses

Landscapes

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

Abstract

1485328 Billet piercing; extruding SCHLOEMANN-SIEMAG AG 21 Nov 1975 [6 Dec 1974] 47954/75 Headings B3H and B3P A method of piercing an extrusion billet 4 comprises inserting the billet into the container 2 of an extrusion press, piercing the billet by means of a piercing mandrel 8 against a sealing plate 5 which has a central recess 6 facing the container, the mandrel entering the recess at the end of the piercing stroke, and the recess having dimensions corresponding to those of a die (7). Fig. 2 (not shown), through which the billet is to be extruded to form a tube with a sealed end. The piercing mandrel forms a boss 9 on the end of the billet and the die (7) is fitted over the boss prior to extrusion. To prevent rupturing of the boss at the commencement of extrusion, the mandrel 8 is initially held stationary, e.g. for about 2-3 seconds after which it moves with the extruded stock.
GB47954/75A 1974-12-06 1975-11-21 Piercing an extrusion billet Expired GB1485328A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742457780 DE2457780A1 (en) 1974-12-06 1974-12-06 ARRANGEMENT FOR PUNCHING A BLOCK USING A PUNCH IN THE DEVICE OF A METAL EXTRUSION PRESS

Publications (1)

Publication Number Publication Date
GB1485328A true GB1485328A (en) 1977-09-08

Family

ID=5932741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47954/75A Expired GB1485328A (en) 1974-12-06 1975-11-21 Piercing an extrusion billet

Country Status (6)

Country Link
JP (1) JPS5325829B2 (en)
DE (1) DE2457780A1 (en)
FR (1) FR2293261A1 (en)
GB (1) GB1485328A (en)
IT (1) IT1051838B (en)
SE (1) SE7512366L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11059084B2 (en) * 2018-07-09 2021-07-13 No.59 Research Institute Of China Ordnance Industry Forward and backward extrusion composite forming method using mould having open inner cavity

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4165627A (en) * 1977-08-08 1979-08-28 Wean United, Inc. Method and apparatus for closing the end of an extruded tube submerged in water
FR2529484B1 (en) * 1982-07-01 1986-03-21 Secim IMPROVEMENT IN EXTRUSION TUBE SPINNING PROCESSES AND DEVICES
JP5093170B2 (en) * 2009-03-25 2012-12-05 住友金属工業株式会社 Erhard's drilling method and core for Erhard's drilling
CN120115699B (en) * 2025-04-27 2025-10-24 山东大学 Double-sided friction extrusion forming process and forming equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11059084B2 (en) * 2018-07-09 2021-07-13 No.59 Research Institute Of China Ordnance Industry Forward and backward extrusion composite forming method using mould having open inner cavity

Also Published As

Publication number Publication date
JPS5183057A (en) 1976-07-21
JPS5325829B2 (en) 1978-07-28
IT1051838B (en) 1981-05-20
AU8726875A (en) 1977-06-09
FR2293261B3 (en) 1979-09-21
DE2457780A1 (en) 1976-06-16
SE7512366L (en) 1976-06-08
FR2293261A1 (en) 1976-07-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee