GB515004A - A method of surface hardening articles of steel - Google Patents

A method of surface hardening articles of steel

Info

Publication number
GB515004A
GB515004A GB14833/38A GB1483338A GB515004A GB 515004 A GB515004 A GB 515004A GB 14833/38 A GB14833/38 A GB 14833/38A GB 1483338 A GB1483338 A GB 1483338A GB 515004 A GB515004 A GB 515004A
Authority
GB
United Kingdom
Prior art keywords
steel
articles
article
surface hardening
hardening temperature
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
GB14833/38A
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.)
Bochumer Verein fuer Gussstahlfabrikation AG
Original Assignee
Bochumer Verein fuer Gussstahlfabrikation 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 Bochumer Verein fuer Gussstahlfabrikation AG filed Critical Bochumer Verein fuer Gussstahlfabrikation AG
Publication of GB515004A publication Critical patent/GB515004A/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/44—Methods of heating in heat-treatment baths
    • C21D1/48—Metal baths
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

515,004. Surface hardening steel. BOCHUMER VEREIN FUR GUSSSTAHLFABRIKATION AKT.-GES. May 18, 1938, No. 14833. Convention date, June 8, 1937. [Class 72] Steel articles are surface-hardened by immersing them in a metal bath having a melting point which is higher by at least 50 ‹C., than the usual hardening temperature of steel, and when the surface zones have reached the hardening temperature subjecting the articles to accelerated cooling, e.g., by quenching in water, oil or air, the process being carried out in such a manner that no change in the composition of the article takes place and the core of the article is unaffected. The bath may be composed of molten bronze or cast iron.
GB14833/38A 1937-06-08 1938-05-18 A method of surface hardening articles of steel Expired GB515004A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE515004X 1937-06-08

Publications (1)

Publication Number Publication Date
GB515004A true GB515004A (en) 1939-11-23

Family

ID=6548837

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14833/38A Expired GB515004A (en) 1937-06-08 1938-05-18 A method of surface hardening articles of steel

Country Status (1)

Country Link
GB (1) GB515004A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682685A1 (en) * 1991-10-17 1993-04-23 Creusot Loire Process for the manufacture of a massive steel component such as a thick sheet with a steep hardness gradient along its thickness and thick sheet with a steep hardness gradient

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682685A1 (en) * 1991-10-17 1993-04-23 Creusot Loire Process for the manufacture of a massive steel component such as a thick sheet with a steep hardness gradient along its thickness and thick sheet with a steep hardness gradient

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