GB425724A - Improvements in or relating to the case-hardening of iron or steel - Google Patents

Improvements in or relating to the case-hardening of iron or steel

Info

Publication number
GB425724A
GB425724A GB1239534A GB1239534A GB425724A GB 425724 A GB425724 A GB 425724A GB 1239534 A GB1239534 A GB 1239534A GB 1239534 A GB1239534 A GB 1239534A GB 425724 A GB425724 A GB 425724A
Authority
GB
United Kingdom
Prior art keywords
case
hardening
relating
iron
steel
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
GB1239534A
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.)
MOSS GEAR Co Ltd
Original Assignee
MOSS GEAR 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 MOSS GEAR Co Ltd filed Critical MOSS GEAR Co Ltd
Priority to GB1239534A priority Critical patent/GB425724A/en
Publication of GB425724A publication Critical patent/GB425724A/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
    • C23C8/60—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 solids, e.g. powders, pastes
    • C23C8/62—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 solids, e.g. powders, pastes only one element being applied
    • C23C8/64—Carburising
    • C23C8/66—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)
  • Chemical Treatment Of Metals (AREA)

Abstract

A case-hardening composition comprises pulverized coal 10 lbs., caustic soda 1 lb., barium carbonate 1 lb. and water 12 lbs. The ingredients are mixed together with water to the consistency of treacle and the articles to be hardened are dipped into the viscous compound and the coated articles are then packed into boxes and heated in a muffle or placed direct in the furnace which is then heated to about 900 DEG C.
GB1239534A 1934-04-25 1934-04-25 Improvements in or relating to the case-hardening of iron or steel Expired GB425724A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1239534A GB425724A (en) 1934-04-25 1934-04-25 Improvements in or relating to the case-hardening of iron or steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1239534A GB425724A (en) 1934-04-25 1934-04-25 Improvements in or relating to the case-hardening of iron or steel

Publications (1)

Publication Number Publication Date
GB425724A true GB425724A (en) 1935-03-20

Family

ID=10003784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1239534A Expired GB425724A (en) 1934-04-25 1934-04-25 Improvements in or relating to the case-hardening of iron or steel

Country Status (1)

Country Link
GB (1) GB425724A (en)

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