GB1331101A - Method and apparatus for forming hollow metal articles - Google Patents

Method and apparatus for forming hollow metal articles

Info

Publication number
GB1331101A
GB1331101A GB1331101DA GB1331101A GB 1331101 A GB1331101 A GB 1331101A GB 1331101D A GB1331101D A GB 1331101DA GB 1331101 A GB1331101 A GB 1331101A
Authority
GB
United Kingdom
Prior art keywords
plate
die
feederhole
bridges
apertures
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
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1331101A publication Critical patent/GB1331101A/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
    • B21C23/02—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
    • B21C25/02—Dies

Abstract

1331101 Extruding; making tubes DOW CHEMICAL CO 1 Dec 1970 57050/70 Headings B3A and B3P A metal tube is made by extruding a billet through a multi-apertured die with bridges 23 between the apertures 22 whose trailing edges are arranged so that when the metal rejoins as it emerges from the die the joints, Fig. 4, are angled to the normal lines through the tube wall. The die comprises a die plate 11 with a central opening 12 surrounded by a bevelled edge 13 and a feederhole plate 10 with an integral mandrel 19 which extends through the opening 12 when the plates are assembled together to define an extrusion space. The feederhole plate 10 has the apertures 22 separated by the bridges 23 which extend at 10 to 70 degrees to the normal across the extrusion space in one embodiment. An alternative feederhole plate (25), Fig. 6 (not shown), has circular apertures (28) and the bridges (29) have ridged edges (30) on the downstream side which also extend at 10 to 70 degrees to the normal. The billet is preferably aluminium or magnesium alloy and is heated to 860‹ F. before extrusion and extruded at 10 feet per minute. The product is air cooled, stretched and heated to 195‹ F. for 8 hours and 300‹ F. for 8 hours to age harden it.
GB1331101D 1970-12-01 1970-12-01 Method and apparatus for forming hollow metal articles Expired GB1331101A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5705070 1970-12-01

Publications (1)

Publication Number Publication Date
GB1331101A true GB1331101A (en) 1973-09-19

Family

ID=10478227

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1331101D Expired GB1331101A (en) 1970-12-01 1970-12-01 Method and apparatus for forming hollow metal articles

Country Status (1)

Country Link
GB (1) GB1331101A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005084845A1 (en) * 2004-03-02 2005-09-15 Magtech-Magnesium Technologies Ltd. An article made of a magnesium alloy tube
CN112756417A (en) * 2021-01-20 2021-05-07 重庆友利森汽车科技有限公司 Thin-wall special-shaped battery frame edge beam extrusion die

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005084845A1 (en) * 2004-03-02 2005-09-15 Magtech-Magnesium Technologies Ltd. An article made of a magnesium alloy tube
CN112756417A (en) * 2021-01-20 2021-05-07 重庆友利森汽车科技有限公司 Thin-wall special-shaped battery frame edge beam extrusion die

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees