GB1335818A - Extrusion of metals - Google Patents

Extrusion of metals

Info

Publication number
GB1335818A
GB1335818A GB1335818DA GB1335818A GB 1335818 A GB1335818 A GB 1335818A GB 1335818D A GB1335818D A GB 1335818DA GB 1335818 A GB1335818 A GB 1335818A
Authority
GB
United Kingdom
Prior art keywords
extrusion
tube
plunger
pull
jaws
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.)
FORMALLOY Ltd
Original Assignee
FORMALLOY Ltd
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 FORMALLOY Ltd filed Critical FORMALLOY Ltd
Publication of GB1335818A publication Critical patent/GB1335818A/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
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B21C35/02—Removing or drawing-off work
    • 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
    • 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
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels

Landscapes

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

Abstract

1335818 Extruding FORMALLOY Ltd 23 Nov 1970 [27 Nov 1969] 57972/69 Heading B3P A metal extrusion press for extruding tubes comprises a plunger 27 with a mandrel 28 which co-operates with the extrusion die 23 at the end of the extrusion stroke to produce a reduced thickness region 25 between the extruded tube 18 and the discard 24 which can be separated by an axial pull on the tube. The pull can be applied continuously during extrusion and increased to effect the separation. A gripper jaw set 56, Fig. 10, is pneumatically operated to grip the end of the tube 18. The extruded tube displaces a crosshead 55 on which the jaws are pivoted and a rack 57 actuates a limit switch 58 to operate a piston-cylinder unit 59, 60 for the jaws. A carriage 67 is driven by a rack and pinion 68 to pull the crosshead 55 by engagement of the racks 57 and fixed pinions 79. A constant tension is applied to the tube by a pneumatic pistoncylinder unit 74. At the end of the extrusion a second pneumatic piston-cylinder unit 75 is actuated to rotate the pinions 76 by a pawl 76 and ratchet wheel 77. This causes the additional pull of the tube to separate it from the discard. In an alternative embodiment collet jaws 82 are used and operated by an outer sleeve 84 moved axially by an hydraulic piston-cylinder unit 85, 86. The jaws are moved to pull the tube for separation by an outer hydraulic piston-cylinder unit 87, 88. The mandrel 28, Figs. 2 and 6, is connected to the plunger 27 by a tie bolt 35 with internal cooling air passages. The extruded tube may also be cooled by a water jacket 36. The discard is engaged in a dovetail slot in the plunger so that it can be removed from the die and is stripped from the plunger by a ring of segments 43. The extrusion is preferably cold but the billet may be initially heated to about 200‹ C. or cooled so that during extrusion its temperature does not exceed the recrystallization temperature of the metal, e.g. aluminium or aluminium alloy. Thus the metal is work-hardened during extrusion. The plunger speed may be 10-90 inches per minute with an extrusion ratio between 25 : 1 and 60 : 1. The exit speed from the die will be 250-5400 inches per minute. The formed tube will be 20-100 feet long.
GB1335818D 1969-11-27 1969-11-27 Extrusion of metals Expired GB1335818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5797269 1969-11-27

Publications (1)

Publication Number Publication Date
GB1335818A true GB1335818A (en) 1973-10-31

Family

ID=10480492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1335818D Expired GB1335818A (en) 1969-11-27 1969-11-27 Extrusion of metals

Country Status (1)

Country Link
GB (1) GB1335818A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991005622A1 (en) * 1989-10-16 1991-05-02 Gordon Howard Goddard Extrusion
WO1997003769A1 (en) * 1995-07-22 1997-02-06 Gordon Howard Goddard Extrusion
CN104438416A (en) * 2014-12-01 2015-03-25 浙江科宇金属材料有限公司 Demolding device for extrusion die
CN105170678A (en) * 2015-09-23 2015-12-23 苏州华冲精密机械有限公司 Aluminum profile extruding machine
CN105170677A (en) * 2015-09-30 2015-12-23 江西耀升钨业股份有限公司 Environment-friendly device for performing no-water extruding on bar-shaped hard alloy blanks
CN109332411A (en) * 2018-11-17 2019-02-15 太原科技大学 A kind of crowded pipe forming device squeezed for non-ferrous metal continuous several times
CN113182373A (en) * 2021-05-18 2021-07-30 山西太钢不锈钢股份有限公司 Extrusion method of nickel-based alloy seamless steel pipe
CN116422720A (en) * 2023-04-27 2023-07-14 重庆丰利钛新材料科技有限公司 Vertical extrusion demoulding production device for titanium alloy pipe

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991005622A1 (en) * 1989-10-16 1991-05-02 Gordon Howard Goddard Extrusion
WO1997003769A1 (en) * 1995-07-22 1997-02-06 Gordon Howard Goddard Extrusion
CN104438416A (en) * 2014-12-01 2015-03-25 浙江科宇金属材料有限公司 Demolding device for extrusion die
CN105170678A (en) * 2015-09-23 2015-12-23 苏州华冲精密机械有限公司 Aluminum profile extruding machine
CN105170677A (en) * 2015-09-30 2015-12-23 江西耀升钨业股份有限公司 Environment-friendly device for performing no-water extruding on bar-shaped hard alloy blanks
CN109332411A (en) * 2018-11-17 2019-02-15 太原科技大学 A kind of crowded pipe forming device squeezed for non-ferrous metal continuous several times
CN109332411B (en) * 2018-11-17 2023-09-15 太原科技大学 Tube extrusion forming device for continuous and repeated extrusion of nonferrous metal
CN113182373A (en) * 2021-05-18 2021-07-30 山西太钢不锈钢股份有限公司 Extrusion method of nickel-based alloy seamless steel pipe
CN116422720A (en) * 2023-04-27 2023-07-14 重庆丰利钛新材料科技有限公司 Vertical extrusion demoulding production device for titanium alloy pipe
CN116422720B (en) * 2023-04-27 2023-11-10 重庆丰利钛新材料科技有限公司 Vertical extrusion demoulding production device for titanium alloy pipe

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years