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GB524362A - Improvements in the case hardening of ferrous metals or ferrous alloys - Google Patents

Improvements in the case hardening of ferrous metals or ferrous alloys

Info

Publication number
GB524362A
GB524362A GB299039A GB299039A GB524362A GB 524362 A GB524362 A GB 524362A GB 299039 A GB299039 A GB 299039A GB 299039 A GB299039 A GB 299039A GB 524362 A GB524362 A GB 524362A
Authority
GB
United Kingdom
Prior art keywords
ferrous
case
gas
hardening
articles
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
GB299039A
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.)
Shell Marketing Co Ltd
Original Assignee
Shell Marketing Co Ltd
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 Shell Marketing Co Ltd filed Critical Shell Marketing Co Ltd
Priority to GB299039A priority Critical patent/GB524362A/en
Publication of GB524362A publication Critical patent/GB524362A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

524,362. Case-hardening. SHELL MARKETING CO., Ltd., and RIGBY, R. Jan. 28, 1939, No. 2990. [Class 72] Articles of ferrous metal or ferrous alloys are case-hardened by heating them in a chamber to 1000‹-1400‹C. in an atmosphere composed of a mixture of 35-45 per cent. of propane, propylene or a mixture thereof, and the remainder air. Before quenching, the treated article may be soaked at 1000‹-1150‹C. in a non-oxidizing atmosphere, e.g., one produced by the combustion with an insufficient supply of air to combust completely hydrocarbons, town gas, coke-oven gas or ammonia. The case-hardening chamber may be provided with a perforated hearth through which the gas may be introduced with or without a fan and the hearth or other supporting member for the articles may be given a continuous or intermittent oscillating and/or reciprocating movement or may be vibrated or tapped.
GB299039A 1939-01-28 1939-01-28 Improvements in the case hardening of ferrous metals or ferrous alloys Expired GB524362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB299039A GB524362A (en) 1939-01-28 1939-01-28 Improvements in the case hardening of ferrous metals or ferrous alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB299039A GB524362A (en) 1939-01-28 1939-01-28 Improvements in the case hardening of ferrous metals or ferrous alloys

Publications (1)

Publication Number Publication Date
GB524362A true GB524362A (en) 1940-08-05

Family

ID=9749830

Family Applications (1)

Application Number Title Priority Date Filing Date
GB299039A Expired GB524362A (en) 1939-01-28 1939-01-28 Improvements in the case hardening of ferrous metals or ferrous alloys

Country Status (1)

Country Link
GB (1) GB524362A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006042A (en) * 1974-03-18 1977-02-01 Hawera Probst Kommanditgesellschaft Hartmetall-Werkzeugfabrik Ravensburg Method of and apparatus for hardening workpieces of steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006042A (en) * 1974-03-18 1977-02-01 Hawera Probst Kommanditgesellschaft Hartmetall-Werkzeugfabrik Ravensburg Method of and apparatus for hardening workpieces of steel

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