GB480103A - Improvements in or relating to the case-harding or cementation of ordinary or chromium steel - Google Patents

Improvements in or relating to the case-harding or cementation of ordinary or chromium steel

Info

Publication number
GB480103A
GB480103A GB2212436A GB2212436A GB480103A GB 480103 A GB480103 A GB 480103A GB 2212436 A GB2212436 A GB 2212436A GB 2212436 A GB2212436 A GB 2212436A GB 480103 A GB480103 A GB 480103A
Authority
GB
United Kingdom
Prior art keywords
gas
cementation
per cent
carbon
ordinary
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
GB2212436A
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
Publication of GB480103A publication Critical patent/GB480103A/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)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

Gas for the cementation of ordinary or chromium steel is produced by removing from producer gas, water gas or a gaseous mixture containing carbon monoxide and hydrogen, substantially all the carbon dioxide and water vapour contained therein by passing the gas over a column of carbon raised to a temperature higher than the cementation temperature, i.e. above 900 DEG C., and adding to the treated gas a small proportion not exceeding 12 per cent of a saturated aliphatic hydrocarbon. The column of carbon may be heated to the desired temperature by an electric heating device employing rings of silicon carbide or a resistance of an iron-chromium aluminium alloy. In an example the gas used contains 30-50 per cent of carbon monoxide, 10-50 of hydrogen, the rest nitrogen and either 3-12 per cent of methane and ethane or 1-6 of butane and propane.
GB2212436A 1935-12-24 1936-08-11 Improvements in or relating to the case-harding or cementation of ordinary or chromium steel Expired GB480103A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR799842T 1935-12-24

Publications (1)

Publication Number Publication Date
GB480103A true GB480103A (en) 1938-02-11

Family

ID=32320253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2212436A Expired GB480103A (en) 1935-12-24 1936-08-11 Improvements in or relating to the case-harding or cementation of ordinary or chromium steel

Country Status (3)

Country Link
DE (2) DE758345C (en)
FR (5) FR799842A (en)
GB (1) GB480103A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385739A (en) * 1965-04-13 1968-05-28 Eaton Yale & Towne Alloy steel articles and the method of making

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3110329A1 (en) * 1981-03-17 1982-09-30 Brown, Boveri & Cie Ag, 6800 Mannheim Gas carburisation process
DE19814451A1 (en) * 1998-03-31 1999-10-07 Linde Ag Process for the heat treatment of workpieces under treatment gas

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE245183C (en) *
US847588A (en) * 1905-04-13 1907-03-19 Adolph W Machlet Case-hardening.
AT34722B (en) * 1907-02-06 1908-10-10 Friedrich Gross Installation of plants for the reduction of ores.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385739A (en) * 1965-04-13 1968-05-28 Eaton Yale & Towne Alloy steel articles and the method of making

Also Published As

Publication number Publication date
FR47594E (en) 1937-06-04
FR49338E (en) 1939-02-17
FR47959E (en) 1937-08-28
DE911138C (en) 1954-05-10
FR49342E (en) 1939-02-17
FR799842A (en) 1936-06-20
DE758345C (en) 1953-02-09

Similar Documents

Publication Publication Date Title
GB255829A (en) Improved manufacture of petroleum spirits from methane or from gases containing methane
GB480103A (en) Improvements in or relating to the case-harding or cementation of ordinary or chromium steel
GB1016033A (en) Improvements in or relating to the hydrogenolysis of light hydrocarbons
US2940880A (en) Process of nitrogenization
GB579742A (en) Improvements in methods for the surface carburising of steel
SU109248A1 (en) Protective gas environment for heat treatment
US2513770A (en) Gaseous fuel mixtures
ES313064A1 (en) A procedure for the purification of gaseous hydrogen contaminated with methane. (Machine-translation by Google Translate, not legally binding)
GB356838A (en)
GB978755A (en) Process for making acetylene
GB481797A (en) Improvements in the gaseous cementation of steel
GB469101A (en) Improvements in the thermal treatment of hydrocarbons
GB349471A (en) Improvements in the production of hydrogen, carbon monoxide/hydrogen mixtures of nitrogen/hydrogen mixtures
GB821139A (en) Improved method for the manufacture of hydrogen cyanide
GB355861A (en) Process for the separation of carbon monoxide from mixed gases containing hydrogen
GB727359A (en) Improvements in or relating to processes for the preparation of cementation gas
GB352280A (en) Process for treating gas mixtures containing saturated hydrocarbons
GB480166A (en) Improvements in the gaseous cementation of steel
GB555592A (en) Improvements in, or relating to, the preparation of gaseous atmospheres for use in heat treatment furnaces
GB568573A (en) Improvements in and relating to the decarburisation of austenitic manganese steel
GB998683A (en) Treating sheet steel to render it non-ageing
GB373701A (en) Process for the manufacture of hydrogen and carbon monoxide from hydrocarbon gases
FR2105727A5 (en) Carbon black mfre - heating hydrocarbons with low calorific value gases
GB370457A (en) Improvements in or relating to the production of hydrogen or carbon monoxideú»hydrogen mixtures or gases containing the same
GB377658A (en) Process for the preparation of acetylene, hydrogen and carbon-monoxide