GB806426A - Improvements in or relating to the hardening of steel objects - Google Patents

Improvements in or relating to the hardening of steel objects

Info

Publication number
GB806426A
GB806426A GB5663/57A GB566357A GB806426A GB 806426 A GB806426 A GB 806426A GB 5663/57 A GB5663/57 A GB 5663/57A GB 566357 A GB566357 A GB 566357A GB 806426 A GB806426 A GB 806426A
Authority
GB
United Kingdom
Prior art keywords
explosive
hardening
mandrel
charge
layer
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
GB5663/57A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB806426A publication Critical patent/GB806426A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

806,426. Altering physical structure. DU PONT DE NEMOURS & CO., E.I. Feb. 19, 1957 [July 11, 1956], No. 5663/57. Class 83 (4). [Also in Group XXI] A method of hardening the inner surface of an austenitic manganese steel hollow body 1 comprises positioning a layer of a detonating explosive composition 2 on the outer surface of the body inserting a mandrel 3 of a deformation - resistant material inside said body, so dimensioned that there is a reasonably close fit between it and the body, and initiating said explosive charge. The explosive layer 2 may be applied as a preformed sleeve, may be coated on the body in a paste or slurry, may be wrapped around the body in the form of ribbon, sheet or tape or may consist of a packaged loose explosive composition. The mandrel may be of hardened tool steel, soft iron, copper, aluminium, temperered glass or ceramics. The charge is exploded by an electric initiator 4. U.S.A. Specification 2,703,297 is referred to.
GB5663/57A 1956-07-11 1957-02-19 Improvements in or relating to the hardening of steel objects Expired GB806426A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US806426XA 1956-07-11 1956-07-11

Publications (1)

Publication Number Publication Date
GB806426A true GB806426A (en) 1958-12-23

Family

ID=22158671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5663/57A Expired GB806426A (en) 1956-07-11 1957-02-19 Improvements in or relating to the hardening of steel objects

Country Status (1)

Country Link
GB (1) GB806426A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4327471A (en) * 1979-03-28 1982-05-04 Akzona Incorporated Hydrostatic pipe splicing method
WO1983002580A1 (en) * 1982-01-25 1983-08-04 Akzona Inc Hydrostatic pipe splicing method and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4327471A (en) * 1979-03-28 1982-05-04 Akzona Incorporated Hydrostatic pipe splicing method
WO1983002580A1 (en) * 1982-01-25 1983-08-04 Akzona Inc Hydrostatic pipe splicing method and apparatus

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