GB667175A - A process of manufacturing articles with a hard surface - Google Patents

A process of manufacturing articles with a hard surface

Info

Publication number
GB667175A
GB667175A GB1492/49A GB149249A GB667175A GB 667175 A GB667175 A GB 667175A GB 1492/49 A GB1492/49 A GB 1492/49A GB 149249 A GB149249 A GB 149249A GB 667175 A GB667175 A GB 667175A
Authority
GB
United Kingdom
Prior art keywords
sintered
manufacturing articles
pressed
mixed
metal
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
GB1492/49A
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.)
SKODA WORKS
Original Assignee
SKODA WORKS
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 SKODA WORKS filed Critical SKODA WORKS
Publication of GB667175A publication Critical patent/GB667175A/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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • C22C1/053—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of hard compounds
    • C22C1/056—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of hard compounds using gas
    • 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
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates

Landscapes

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

Abstract

In a process of manufacturing articles the surface of which is formed of a carbide of a metal of sub-group A of the 4th, 5th and 6th groups of the Periodic Table and of a metal of the iron group, powders of the two metals are mixed, pressed, moulded and sintered and finally subjected to surface carburizing. Tungsten powder may be mixed with 3-20 per cent of cobalt powder and the mixture moulded, pressed, and sintered. The sintered body may then be machined and refined by quenching from 1400-1500 DEG C and tempering at 600-700 DEG C after which is carburized at 1200-1450 DEG C in an atmosphere of city gas or hydrogen charged with a hydrocarbon vapour, e.g. benzol.
GB1492/49A 1948-01-23 1949-01-19 A process of manufacturing articles with a hard surface Expired GB667175A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS667175X 1948-01-23

Publications (1)

Publication Number Publication Date
GB667175A true GB667175A (en) 1952-02-27

Family

ID=5454542

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1492/49A Expired GB667175A (en) 1948-01-23 1949-01-19 A process of manufacturing articles with a hard surface

Country Status (1)

Country Link
GB (1) GB667175A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2213125A1 (en) * 1973-01-05 1974-08-02 Schild Sa A
EP0246211A2 (en) * 1986-05-12 1987-11-19 Santrade Limited Sintered body for chip forming machining
EP0247985A2 (en) * 1986-05-12 1987-12-02 Santrade Ltd. Cemented carbide with a binder phase gradient and method of making the same
BE1013524A5 (en) * 1998-08-21 2002-03-05 Baker Hughes Inc Drill steel tooth with a very thick layer of charging.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2213125A1 (en) * 1973-01-05 1974-08-02 Schild Sa A
EP0246211A2 (en) * 1986-05-12 1987-11-19 Santrade Limited Sintered body for chip forming machining
EP0247985A2 (en) * 1986-05-12 1987-12-02 Santrade Ltd. Cemented carbide with a binder phase gradient and method of making the same
EP0247985A3 (en) * 1986-05-12 1988-01-27 Santrade Ltd. Cemented carbide with a binder phase gradient and method of making the same
EP0246211A3 (en) * 1986-05-12 1988-02-03 Santrade Limited Sintered body for chip forming machining
BE1013524A5 (en) * 1998-08-21 2002-03-05 Baker Hughes Inc Drill steel tooth with a very thick layer of charging.

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