US1671870A - Method of treating manganese steel - Google Patents

Method of treating manganese steel Download PDF

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Publication number
US1671870A
US1671870A US91267A US9126726A US1671870A US 1671870 A US1671870 A US 1671870A US 91267 A US91267 A US 91267A US 9126726 A US9126726 A US 9126726A US 1671870 A US1671870 A US 1671870A
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US
United States
Prior art keywords
manganese steel
treating manganese
steel
quenching
ductility
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 - Lifetime
Application number
US91267A
Inventor
Mekeel Van Cortright
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.)
TAYLORWHARTON IRON AND STEEL C
TAYLORWHARTON IRON AND STEEL Co
Original Assignee
TAYLORWHARTON IRON AND STEEL C
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 TAYLORWHARTON IRON AND STEEL C filed Critical TAYLORWHARTON IRON AND STEEL C
Priority to US91267A priority Critical patent/US1671870A/en
Application granted granted Critical
Publication of US1671870A publication Critical patent/US1671870A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • C23C8/68—Boronising
    • C23C8/70—Boronising of ferrous surfaces
    • 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
    • C23C8/72—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 more than one element being applied in one step

Definitions

  • JERSEY A COB- am'rnon or resume nanamasn srann.
  • My invention relates to the treatment of iron and steel alloys and more particularly manganese steel.
  • Objects of the invention are to provide for increased strength, and especially greater resistance to abrasive wear, of manganese steel shapes or articles, whether formed by casting or working or both, without impairing the toughness and ductility of the metal.
  • my invention consists in sealing manganese steel castings or forgings in the presence of case hardening or cementation material, effecting the case hardening during the heating operation in heat treatment, and quenching the case hardening product under conditions conducive to minimum
  • case hardening or cementation material By varying the material as to its components and their relative proportions, and by regulating the time the charge is held at heat, the depth and nature of the case hardening can readily be controlled.
  • I provide for case carbonizing, case boronizing, or both, by subjecting the casting or forging to the action of carbonizing or boronizing materials, or a mixture thereof, while sealed against the atmosphere, during the heating stagesin heat treatment.
  • materials ap )ropriate for the purpose are barium carl;onat.e (BaCO,) and charcoal or coke; bone in a finely divided state,
  • the casting or forging and the charge are sealed in a container, or in-a covering, the nature of which will depend upon the size andshape of the article and whether it is be ing treated singly or in quantities, but which, by preference, will be adapted to adngt of quenching of the article or articles with ittlc
  • An example is application, Ser.
  • My invention applies to high per cent manganese steel flareal manganese steel, that is to say, steel having a manganese content anging from live to twenty per cent and p'feferably eleven to fourteen per cent. 2 a

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Description

exposure to the air.
- with suitable reducing agents.
Patented May 29, 1928.
UNITED STATES.
VAN CORTRIGET HEKEEL,
POBATION OF NEW JERSEY.
PATENT OFFICE.
OF HIGK,BRIDGE, NEW JERSEY, ASSIGNOB (10 TAYLOR- WHABTON IRON AND STEEL COMPANY, 01' HIGH BRIDGE, NEW
JERSEY, A COB- am'rnon or resume nanamasn srann.
No Drawing.
My invention relates to the treatment of iron and steel alloys and more particularly manganese steel.
Objects of the invention are to provide for increased strength, and especially greater resistance to abrasive wear, of manganese steel shapes or articles, whether formed by casting or working or both, without impairing the toughness and ductility of the metal.
The nature of my invention consists in sealing manganese steel castings or forgings in the presence of case hardening or cementation material, effecting the case hardening during the heating operation in heat treatment, and quenching the case hardening product under conditions conducive to minimum By varying the material as to its components and their relative proportions, and by regulating the time the charge is held at heat, the depth and nature of the case hardening can readily be controlled.
According tomy invention, I provide for case carbonizing, case boronizing, or both, by subjecting the casting or forging to the action of carbonizing or boronizing materials, or a mixture thereof, while sealed against the atmosphere, during the heating stagesin heat treatment. Examples of materials ap )ropriate for the purpose are barium carl;onat.e (BaCO,) and charcoal or coke; bone in a finely divided state, In practice, the casting or forging and the charge are sealed in a container, or in-a covering, the nature of which will depend upon the size andshape of the article and whether it is be ing treated singly or in quantities, but which, by preference, will be adapted to adngt of quenching of the article or articles with ittlc An example is application, Ser.
oxid or boric alloy,
or no exposure to the air. disclosed in my co-pendmg No; 91,113. I
strength and wear resistive Application filed February 27, 1928. Serial No. 91,267.
My invention applies to high per cent manganese steel mercial manganese steel, that is to say, steel having a manganese content anging from live to twenty per cent and p'feferably eleven to fourteen per cent. 2 a
In some cases I propose to line the molds with finely divided boric oxid or boric alloy in admixture with various reducing sub stances and utilize the heat of casting to fuse boron into the surface of highper cent manganese steel. 7
Having described my invention, I claim L. The method of imparting greater strength and wear resistive properties to manganese steel without impairing the toughness and ductility of the metal, which consists the regular heat treatment, and quenching under conditions conducive to minimum exposure to air. 1
2. The method of imparting greater properties to manganese steel without impairing its toughness and ductility, which consists in packing the shape with cementing material in a container and, while so sealed against exposure, heat treating in me regular way, and then quenching.
3. The method of imparting greater strength and wear resistive properties to manganese steel without impairing its toughness and ductility, which consists in sealing the shape in the presence of tinely divided boric oxid and a reducing agent, and. while so sealed, heating it in stages in the regular order of heat treatment, and then quenching.
In testimony whereof I affix my signature.
VAN CORTRIGHT MEKEEL.
or what-is known as comfill till
in case hardening the shape during
US91267A 1926-02-27 1926-02-27 Method of treating manganese steel Expired - Lifetime US1671870A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365985A1 (en) * 1988-10-22 1990-05-02 Thyssen Edelstahlwerke AG Steel alloys containing boron, and process for annealing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365985A1 (en) * 1988-10-22 1990-05-02 Thyssen Edelstahlwerke AG Steel alloys containing boron, and process for annealing the same

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