GB274978A - Improvements in or relating to the manufacture of hollow metal rods, bars and the like - Google Patents

Improvements in or relating to the manufacture of hollow metal rods, bars and the like

Info

Publication number
GB274978A
GB274978A GB1174926A GB1174926A GB274978A GB 274978 A GB274978 A GB 274978A GB 1174926 A GB1174926 A GB 1174926A GB 1174926 A GB1174926 A GB 1174926A GB 274978 A GB274978 A GB 274978A
Authority
GB
United Kingdom
Prior art keywords
lining
rolling
mandrel
bore
metal
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
GB1174926A
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 GB1174926A priority Critical patent/GB274978A/en
Publication of GB274978A publication Critical patent/GB274978A/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
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
    • B21C37/154—Making multi-wall tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lubricants (AREA)

Abstract

274,978. Potter, H. S. May 4. 1926. Drawings to Specification. Cased forms; tubes.-In making hollow bars or rods such as mining drill steels from hollow billets, a metal lining is united by a spraying operation or by electro-deposition to the bore of the billet prior to rolling into bar form so as to protect the surface of the bore from damage during subsequent rolling by the mandrel, sand core or metal core methods and also to prevent rusting of the finished drill by water in the mines. The lining may consist of copper, nickel. or rustless steel or iron. The bore is first cleaned by sand blast and mav then be coated by metal from a spraying nozzle on an arm rotated by a turbine, the nozzle being inclined to the arm or being provided with a deflector plate. The thickness of the lining may be rendered uniform by reaming or pressing by a polishing operation e.g.- by pushing a mandrel or ball therethrough. Any cracks formed during the rolling operation may be removed by relining the bar by electrodeposition. A nickel lining serves as a lubricant to facilitate rolling on a mandrel or withdrawal of a metal core. A finished steel may be sprayed with a bitumen paint and deposits of silica therein may be removed by a jet of compressed air.. Specification 208,777 is referred to.
GB1174926A 1926-05-04 1926-05-04 Improvements in or relating to the manufacture of hollow metal rods, bars and the like Expired GB274978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1174926A GB274978A (en) 1926-05-04 1926-05-04 Improvements in or relating to the manufacture of hollow metal rods, bars and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1174926A GB274978A (en) 1926-05-04 1926-05-04 Improvements in or relating to the manufacture of hollow metal rods, bars and the like

Publications (1)

Publication Number Publication Date
GB274978A true GB274978A (en) 1927-08-04

Family

ID=9991988

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1174926A Expired GB274978A (en) 1926-05-04 1926-05-04 Improvements in or relating to the manufacture of hollow metal rods, bars and the like

Country Status (1)

Country Link
GB (1) GB274978A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2321958A1 (en) * 1975-08-23 1977-03-25 Messerschmitt Boelkow Blohm Flow formed maraging steel for high tensile workpieces - coated with metals to improve corrosion resistance
FR2882764A1 (en) * 2005-03-03 2006-09-08 Air Liquide METHOD FOR COATING AN OXYGEN-GAS OXYGEN EQUIPMENT OR ELEMENT

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2321958A1 (en) * 1975-08-23 1977-03-25 Messerschmitt Boelkow Blohm Flow formed maraging steel for high tensile workpieces - coated with metals to improve corrosion resistance
FR2882764A1 (en) * 2005-03-03 2006-09-08 Air Liquide METHOD FOR COATING AN OXYGEN-GAS OXYGEN EQUIPMENT OR ELEMENT
WO2006092516A1 (en) * 2005-03-03 2006-09-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method of coating a pipe element or device used to convey gaseous oxygen

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