GB359955A - Improvement in or connected with the case-hardening of iron, steel and nickel steel - Google Patents

Improvement in or connected with the case-hardening of iron, steel and nickel steel

Info

Publication number
GB359955A
GB359955A GB2247730A GB2247730A GB359955A GB 359955 A GB359955 A GB 359955A GB 2247730 A GB2247730 A GB 2247730A GB 2247730 A GB2247730 A GB 2247730A GB 359955 A GB359955 A GB 359955A
Authority
GB
United Kingdom
Prior art keywords
steel
iron
hardening
improvement
case
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
GB2247730A
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.)
BERLINER HAERTEPULVER GES MIT
Original Assignee
BERLINER HAERTEPULVER GES MIT
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 BERLINER HAERTEPULVER GES MIT filed Critical BERLINER HAERTEPULVER GES MIT
Priority to GB2247730A priority Critical patent/GB359955A/en
Publication of GB359955A publication Critical patent/GB359955A/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
    • C23C8/04—Treatment of selected surface areas, e.g. using masks

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 Housings, Linings, Walls, And Ceilings (AREA)
  • Ceramic Products (AREA)

Abstract

Parts of iron, steel or nickel steel which are not to be hardened during case hardening are provided with a layer of a mixture of aluminium and the known refractory earths such as clay, loam, &c. Powdered bauxite may also be added to the mixture.
GB2247730A 1930-07-25 1930-07-25 Improvement in or connected with the case-hardening of iron, steel and nickel steel Expired GB359955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2247730A GB359955A (en) 1930-07-25 1930-07-25 Improvement in or connected with the case-hardening of iron, steel and nickel steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2247730A GB359955A (en) 1930-07-25 1930-07-25 Improvement in or connected with the case-hardening of iron, steel and nickel steel

Publications (1)

Publication Number Publication Date
GB359955A true GB359955A (en) 1931-10-26

Family

ID=10180006

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2247730A Expired GB359955A (en) 1930-07-25 1930-07-25 Improvement in or connected with the case-hardening of iron, steel and nickel steel

Country Status (1)

Country Link
GB (1) GB359955A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149945A (en) * 1954-12-30 1964-09-22 Saint Gobain Differential thermal treatment of glass objects

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149945A (en) * 1954-12-30 1964-09-22 Saint Gobain Differential thermal treatment of glass objects

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