GB1365510A - Manufacture of metal tubes - Google Patents

Manufacture of metal tubes

Info

Publication number
GB1365510A
GB1365510A GB1638971A GB1638971A GB1365510A GB 1365510 A GB1365510 A GB 1365510A GB 1638971 A GB1638971 A GB 1638971A GB 1638971 A GB1638971 A GB 1638971A GB 1365510 A GB1365510 A GB 1365510A
Authority
GB
United Kingdom
Prior art keywords
mandrel
billet
pilot hole
tool
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
GB1638971A
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.)
Chesterfield Ltd T I
Original Assignee
Chesterfield Ltd T I
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 Chesterfield Ltd T I filed Critical Chesterfield Ltd T I
Priority to GB1638971A priority Critical patent/GB1365510A/en
Publication of GB1365510A publication Critical patent/GB1365510A/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
    • B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
    • 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
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, 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 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
    • B21C25/04—Mandrels

Abstract

1365510 Extruding; billet piercing T I CHESTERFIELD Ltd 12 April 1972 [21 May 1971] 16389/71 Headings B3P and B3H A metal tube is made by enlarging a pilot hole 11 of a billet 10, positioned in an extrusion press container 12, by means of an expanding tool 13 mounted on a mandrel 17 and having an expanding portion 15 and a guide portion 14 for guiding the tool 13 through the pilot hole 11, and thereafter extruding the billet 10 around the mandrel 17 by a ram 18, a lubricant being applied to the mandrel 17 and the pilot hole 11 and/or the expanding tool 13. After the expanding tool 13, which may be heated, has moved through the heated steel billet 10 to enlarge the pilot hole 11, a ram 18 is moved over the mandrel 17 to extrude the billet 10 between the mandrel 17 and a die insert 20 located between rings 21, 22. The tool 13 is pushed off the end of the mandrel 17 by the extruded tube. Prior to the enlarging and extruding operations, powdered glass is positioned in the pilot hole 11 and the mandrel 17 is sprayed with a lubricant comprising a mixture of powdered glass, clay, water, sodium silicate and preferably sodium aluminate. A glass ring 23 is positioned between the ring 22 and the billet 10 and a hollow glass cone 16 is positioned in a frusto-conical recess at one end of the billet pilot hole 11. Graphitic lubricants may alternatively be used.
GB1638971A 1972-04-12 1972-04-12 Manufacture of metal tubes Expired GB1365510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1638971A GB1365510A (en) 1972-04-12 1972-04-12 Manufacture of metal tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1638971A GB1365510A (en) 1972-04-12 1972-04-12 Manufacture of metal tubes

Publications (1)

Publication Number Publication Date
GB1365510A true GB1365510A (en) 1974-09-04

Family

ID=10076447

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1638971A Expired GB1365510A (en) 1972-04-12 1972-04-12 Manufacture of metal tubes

Country Status (1)

Country Link
GB (1) GB1365510A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619327A1 (en) * 1987-08-13 1989-02-17 Ardt TOOL STAGE FOR DRILLING A HOLE IN A WORKPIECE BY AXIAL FEEDING OF THE TOOL
CN103722038A (en) * 2013-12-26 2014-04-16 宝钢特钢有限公司 Method for lubricating hot extrusion steel pipe external mold
CN109909311A (en) * 2017-12-12 2019-06-21 宝钢特钢有限公司 A kind of tubing hot extrusion discard and tube body separation method
CN110976544A (en) * 2019-12-18 2020-04-10 攀钢集团江油长城特殊钢有限公司 Hot extrusion blank reaming process

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619327A1 (en) * 1987-08-13 1989-02-17 Ardt TOOL STAGE FOR DRILLING A HOLE IN A WORKPIECE BY AXIAL FEEDING OF THE TOOL
EP0306380A1 (en) * 1987-08-13 1989-03-08 Agence Regionale De Developpements Technologiques - Ardt - Stepped tool for piercing a hole in a work piece by driving the tool axially into the work piece
US4966023A (en) * 1987-08-13 1990-10-30 Agence Regionale De Developpements Technologiques Staged tool for boring a hole in an element by axial penetration of the tool
CN103722038A (en) * 2013-12-26 2014-04-16 宝钢特钢有限公司 Method for lubricating hot extrusion steel pipe external mold
CN103722038B (en) * 2013-12-26 2016-08-24 宝钢特钢有限公司 A kind of lubricating method of hot extrusion steel tube external mold
CN109909311A (en) * 2017-12-12 2019-06-21 宝钢特钢有限公司 A kind of tubing hot extrusion discard and tube body separation method
CN109909311B (en) * 2017-12-12 2020-05-12 宝钢特钢有限公司 Method for separating pipe hot extrusion residue from pipe body
CN110976544A (en) * 2019-12-18 2020-04-10 攀钢集团江油长城特殊钢有限公司 Hot extrusion blank reaming process

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Legal Events

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