GB910076A - Surface hardening of metals - Google Patents

Surface hardening of metals

Info

Publication number
GB910076A
GB910076A GB2174461A GB2174461A GB910076A GB 910076 A GB910076 A GB 910076A GB 2174461 A GB2174461 A GB 2174461A GB 2174461 A GB2174461 A GB 2174461A GB 910076 A GB910076 A GB 910076A
Authority
GB
United Kingdom
Prior art keywords
sheet
explosive
steel
layer
hardened
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
GB2174461A
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 GB910076A publication Critical patent/GB910076A/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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F3/00—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Connection Of Plates (AREA)
  • Laminated Bodies (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

910,076. Altering physical structure. DU PONT DE NEMOURS & CO., E.I. June 15, 1961 [June 23, 1960; Feb. 2, 1961], No. 21744/61. Class 83 (4). A process for hardening a metallic surface comprises positioning a metal sheet, e.g. of steel, lead or brass parallel to the surface to be hardened and separated therefrom by a space, placing on the exterior surface of the sheet a layer of a detonating explosive having a velocity of detonation at least 25% greater than the sonic velocity of tile metal to be hardened, and initiating the explosive. The process is applicable to the hardening of manganese steel, stainless steel, vanadium steel and nickel, niobium, cobalt and their alloys. The air space between the said surface and the sheet is between 0.010 and 0.025 inch thick. The layer of explosive may be initiated at a corner, in the centre or at any point along an edge or, by using a line-wave initiator along an entire edge. The explosive layer may be bonded to the sheet or applied in a paste or gelled form. In an embodiment the metal specimen 2 whose upper surface is to be hardened is placed on an alloy steel support 1. A brass or steel sheet 3 is supported on said upper surface by means of projections 7 on the sheet to provide the necessary air space 8. The layer of explosive 4 on the outer surface of the sheet 3 is initiated by an electric initiator 5. Specifications 765,305 and 876,951 are referred to.
GB2174461A 1960-06-23 1961-06-15 Surface hardening of metals Expired GB910076A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3826160A 1960-06-23 1960-06-23
US8705361A 1961-02-02 1961-02-02

Publications (1)

Publication Number Publication Date
GB910076A true GB910076A (en) 1962-11-07

Family

ID=26715021

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2174461A Expired GB910076A (en) 1960-06-23 1961-06-15 Surface hardening of metals

Country Status (1)

Country Link
GB (1) GB910076A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094912A1 (en) * 1982-05-17 1983-11-23 Battelle Development Corporation Improved laser shock processing
CN113637932A (en) * 2021-08-27 2021-11-12 北京理工大学 Preparation method of gradient hardened titanium alloy
CN116065009A (en) * 2023-04-06 2023-05-05 北京理工大学 Method and device for preparing gradient hardening black metal plate through high-temperature explosion hardening

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094912A1 (en) * 1982-05-17 1983-11-23 Battelle Development Corporation Improved laser shock processing
CN113637932A (en) * 2021-08-27 2021-11-12 北京理工大学 Preparation method of gradient hardened titanium alloy
CN113637932B (en) * 2021-08-27 2022-02-15 北京理工大学 Preparation method of gradient hardened titanium alloy
CN116065009A (en) * 2023-04-06 2023-05-05 北京理工大学 Method and device for preparing gradient hardening black metal plate through high-temperature explosion hardening

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