GB1333831A - Cold drawing straight bore tubes - Google Patents

Cold drawing straight bore tubes

Info

Publication number
GB1333831A
GB1333831A GB2563271*A GB2563271A GB1333831A GB 1333831 A GB1333831 A GB 1333831A GB 2563271 A GB2563271 A GB 2563271A GB 1333831 A GB1333831 A GB 1333831A
Authority
GB
United Kingdom
Prior art keywords
mandrel
tube
die
cold drawing
straight bore
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
GB2563271*A
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.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox 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 Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Publication of GB1333831A publication Critical patent/GB1333831A/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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Abstract

1333831 Drawing BABCOCK & WILCOX CO 19 April 1971 [14 May 1970] 25632/71 Heading B3P [Also in Division F2] A rotary pierced metal tube is formed with a straight bore by cold drawing the tube 10 using a mandrel 12 of uniform cross-section, which mandrel is advanced through the die 17 during the drawing operation to an end position downstream of the die 17. A cylindrical mandrel 12 is first positioned against the pointed end of a steel tube to be drawn. At the start of the draw the mandrel 12 is advanced with the tube through the die 17 until it reaches the desired end position downstream of the die 17, a distance greater than one-half the mandrel diameter, e.g. at least 4 inches. The bore of the drawn tube may have a straightness within a tolerance of Œ0À010 inch in 15 inches or an internal surface wave of amplitude less than one-third of that of an external surface wave.
GB2563271*A 1970-05-14 1971-04-19 Cold drawing straight bore tubes Expired GB1333831A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3724370A 1970-05-14 1970-05-14

Publications (1)

Publication Number Publication Date
GB1333831A true GB1333831A (en) 1973-10-17

Family

ID=21893257

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2563271*A Expired GB1333831A (en) 1970-05-14 1971-04-19 Cold drawing straight bore tubes

Country Status (4)

Country Link
US (1) US3709020A (en)
JP (1) JPS5111587B1 (en)
DE (1) DE2109826A1 (en)
GB (1) GB1333831A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5557981A (en) * 1993-05-25 1996-09-24 Tamco Limited One-piece gearshift lever with cold formed end
DE19902501A1 (en) * 1999-01-22 2000-07-27 Schumag Ag Mandrel, device and method for cold drawing seamless tubes
EP1547702B1 (en) * 2003-12-26 2007-07-11 Calsonic Kansei Corporation Apparatus and method for bending multi-channel tubes
JP6257069B2 (en) * 2012-08-03 2018-01-10 国立研究開発法人産業技術総合研究所 Thin drawn tubule

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US693119A (en) * 1901-01-10 1902-02-11 Samuel E Diescher Drawing tubes.
US1967487A (en) * 1930-03-20 1934-07-24 Mechanics Universal Joint Comp Method and apparatus for making propeller shafts
US2091001A (en) * 1935-08-26 1937-08-24 Reconstruction Finance Corp Tube drawing means
US2258242A (en) * 1940-09-27 1941-10-07 Phelps Dodge Copper Prod Apparatus for drawing tubes of multiple wall thickness
US3327513A (en) * 1965-02-12 1967-06-27 John W Hinshaw Method and apparatus for working metal
US3564884A (en) * 1968-08-20 1971-02-23 Battelle Development Corp Deformable die apparatus for tube drawing
US3570297A (en) * 1968-09-19 1971-03-16 Raymond A Matthews Die and method for drawing metal tubes

Also Published As

Publication number Publication date
JPS5111587B1 (en) 1976-04-12
DE2109826A1 (en) 1971-11-18
US3709020A (en) 1973-01-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee