DE2940008C2 - - Google Patents

Info

Publication number
DE2940008C2
DE2940008C2 DE19792940008 DE2940008A DE2940008C2 DE 2940008 C2 DE2940008 C2 DE 2940008C2 DE 19792940008 DE19792940008 DE 19792940008 DE 2940008 A DE2940008 A DE 2940008A DE 2940008 C2 DE2940008 C2 DE 2940008C2
Authority
DE
Germany
Prior art keywords
profile
mandrel
blind holes
finished
block
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
DE19792940008
Other languages
German (de)
English (en)
Other versions
DE2940008A1 (de
Inventor
Wolfgang Dipl.-Ing. Niwiera
Franz-Josef Ing.(Grad.) 4500 Osnabrueck De Holtorf
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19792940008 priority Critical patent/DE2940008A1/de
Publication of DE2940008A1 publication Critical patent/DE2940008A1/de
Application granted granted Critical
Publication of DE2940008C2 publication Critical patent/DE2940008C2/de
Granted 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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/151—Making tubes with multiple passages

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
DE19792940008 1979-10-03 1979-10-03 Verfahren zur herstellung eines hohlprofils Granted DE2940008A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792940008 DE2940008A1 (de) 1979-10-03 1979-10-03 Verfahren zur herstellung eines hohlprofils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792940008 DE2940008A1 (de) 1979-10-03 1979-10-03 Verfahren zur herstellung eines hohlprofils

Publications (2)

Publication Number Publication Date
DE2940008A1 DE2940008A1 (de) 1981-05-14
DE2940008C2 true DE2940008C2 (enrdf_load_stackoverflow) 1987-11-12

Family

ID=6082530

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792940008 Granted DE2940008A1 (de) 1979-10-03 1979-10-03 Verfahren zur herstellung eines hohlprofils

Country Status (1)

Country Link
DE (1) DE2940008A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8869874B2 (en) 2006-12-14 2014-10-28 Cta Technology (Proprietary) Limited Manufacturing method for a multi-channel copper tube, and manufacturing apparatus for the tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8869874B2 (en) 2006-12-14 2014-10-28 Cta Technology (Proprietary) Limited Manufacturing method for a multi-channel copper tube, and manufacturing apparatus for the tube

Also Published As

Publication number Publication date
DE2940008A1 (de) 1981-05-14

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Legal Events

Date Code Title Description
OR8 Request for search as to paragraph 43 lit. 1 sentence 1 patent law
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee