GB1172876A - Improvements in or relating to a Method for the Cold Drawing of Metal Sections - Google Patents

Improvements in or relating to a Method for the Cold Drawing of Metal Sections

Info

Publication number
GB1172876A
GB1172876A GB1304667A GB1304667A GB1172876A GB 1172876 A GB1172876 A GB 1172876A GB 1304667 A GB1304667 A GB 1304667A GB 1304667 A GB1304667 A GB 1304667A GB 1172876 A GB1172876 A GB 1172876A
Authority
GB
United Kingdom
Prior art keywords
section
mandrel
mandrels
die
entry
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
GB1304667A
Inventor
Horst Nitschke
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.)
Fried Krupp AG Hoesch Krupp
Original Assignee
Hoesch 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 Hoesch AG filed Critical Hoesch AG
Priority to GB1304667A priority Critical patent/GB1172876A/en
Publication of GB1172876A publication Critical patent/GB1172876A/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
    • B21C9/00—Cooling, heating or lubricating drawing material
    • 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
    • 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
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/16—Mandrels; Mounting or adjusting same

Landscapes

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

Abstract

1,172,876. Drawing tubes. HOESCH A.G. 20 March, 1967, No. 13046/67. Heading B3P. A method of cold-drawing hollow metal sections wherein the section 1 is reduced in outside diameter and wall thickness in a single operation comprises at least two successive stages, each consisting of a die and a mandrel and in each of which the exterior and interior walls of the section are lubricated via spaces delimited by an entry plate 101 with a conical entry portion, the dies 2a and 2b, a mandrel rod connection member 103, the mandrels 6a and 6b and the tube wall, and in which a low pressure lubrication is provided for the first mandrel and drawing die and a high pressure lubrication for all further stages. The mandrels 6a and 6b are clamped by a nut 5 on a mandrel rod 4, the mandrels being separated by a distance piece 7. Each mandrel has an entry section 13a, 13b of increasing cross-section followed by a section 15a, 15b of decreasing cross-section merging into a lubrication groove 14a, 14b, and a cylindrical portion 16a, 16b. A duct 8 through the mandrel rod has radial bores 9a, 9b and 9c connecting with external annular grooves and with radial bores 11a, 11b and lie which lead to the spaces 12a, 12b and 12c. The dies 2a and 2b have a tapered entry section leading to an exit section having a slower taper. The relative axial positions of the die and mandrel are such that the section is first reduced in diameter and then the wall thickness is reduced. Between the dies an external chamber 3 is formed. High pressure lubricating fluid is supplied to the chamber 3 and to the spaces 12a, 12b and 12c. A further lubricant chamber 102 is formed between the entry plate 101 and the die 2a, this space being supplied with low pressure lubricant. A space 104 inside the section is supplied with low pressure lubricant through a tube surrounding the mandrel rod and a bore 106. Either or both of the mandrels may float on the mandrel rod.
GB1304667A 1967-03-20 1967-03-20 Improvements in or relating to a Method for the Cold Drawing of Metal Sections Expired GB1172876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1304667A GB1172876A (en) 1967-03-20 1967-03-20 Improvements in or relating to a Method for the Cold Drawing of Metal Sections

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1304667A GB1172876A (en) 1967-03-20 1967-03-20 Improvements in or relating to a Method for the Cold Drawing of Metal Sections

Publications (1)

Publication Number Publication Date
GB1172876A true GB1172876A (en) 1969-12-03

Family

ID=10015811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1304667A Expired GB1172876A (en) 1967-03-20 1967-03-20 Improvements in or relating to a Method for the Cold Drawing of Metal Sections

Country Status (1)

Country Link
GB (1) GB1172876A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513705B1 (en) * 1970-02-24 1976-02-05
CN105290128A (en) * 2014-06-24 2016-02-03 亚太轻合金(南通)科技有限公司 Novel circular lubricating cold drawing inner die
CN108971247A (en) * 2018-09-10 2018-12-11 江阴市洪腾机械有限公司 A kind of combination cold drawing die reducing thickness of steel pipe difference
WO2019038014A1 (en) * 2017-08-22 2019-02-28 Admantec Ag Device for producing pipes, and method for producing a die and a mandrel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513705B1 (en) * 1970-02-24 1976-02-05
CN105290128A (en) * 2014-06-24 2016-02-03 亚太轻合金(南通)科技有限公司 Novel circular lubricating cold drawing inner die
WO2019038014A1 (en) * 2017-08-22 2019-02-28 Admantec Ag Device for producing pipes, and method for producing a die and a mandrel
CN108971247A (en) * 2018-09-10 2018-12-11 江阴市洪腾机械有限公司 A kind of combination cold drawing die reducing thickness of steel pipe difference
CN108971247B (en) * 2018-09-10 2024-03-12 江阴市洪腾机械有限公司 Combined cold drawing die for reducing wall thickness difference of steel pipe

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Legal Events

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