GB443446A - Improvements relating to structural parts such as screws, bolts and pipes - Google Patents

Improvements relating to structural parts such as screws, bolts and pipes

Info

Publication number
GB443446A
GB443446A GB26853/34A GB2685334A GB443446A GB 443446 A GB443446 A GB 443446A GB 26853/34 A GB26853/34 A GB 26853/34A GB 2685334 A GB2685334 A GB 2685334A GB 443446 A GB443446 A GB 443446A
Authority
GB
United Kingdom
Prior art keywords
nitrogenized
bolts
screws
pipes
manganese
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
GB26853/34A
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.)
Krupp Stahl AG
Fried Krupp AG
Original Assignee
Krupp Stahl AG
Fried Krupp AG
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 Krupp Stahl AG, Fried Krupp AG filed Critical Krupp Stahl AG
Publication of GB443446A publication Critical patent/GB443446A/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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • 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
    • C23C8/24—Nitriding
    • C23C8/26—Nitriding of ferrous surfaces

Landscapes

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

Abstract

Structural articles such as screws, bolts and tubes used in power plants and in situations where they are subjected to prolonged tensile stress at elevated temperatures are made from ferrous base alloys the surface portions of which have been nitrogenized to a depth of from 0,3 to 2 mm. Alloys containing carbon up to 1,5 per cent, silicon up to 3, manganese up to 3, chromium up to 20, aluminium up to 3, molybdenum tungsten, titanium vanadium or zirconium up to 3 and up to 20 of nickel or cobalt are referred to. In an example an alloy steel containing 0,33 per cent of carbon, 0,31 of silicon, 0,76 of manganese, 1,00 of chromium, 1,08 of aluminium and 0,25 of molybdenum, was quenched in water from 870 DEG C., reheated to 650 DEG C., and nitrogenized at 560 DEG C. for 100 hours, and the depth of the nitrogenized portion was 1,01 mm. The nitrogenizing temperatures used are from 500-800 DEG C. Specifications 174,580, [Class 72] and 345,659** are referred to.
GB26853/34A 1933-09-18 1934-09-18 Improvements relating to structural parts such as screws, bolts and pipes Expired GB443446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE443446X 1933-09-18

Publications (1)

Publication Number Publication Date
GB443446A true GB443446A (en) 1936-02-28

Family

ID=6529288

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26853/34A Expired GB443446A (en) 1933-09-18 1934-09-18 Improvements relating to structural parts such as screws, bolts and pipes

Country Status (1)

Country Link
GB (1) GB443446A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2359011A1 (en) * 1973-02-22 1974-09-05 Babcock & Wilcox Co COOL AND TEMPERED LOW-ALLOY STEEL
CN101403073B (en) * 2008-11-14 2010-06-02 济南济钢铁合金厂 method of producing for self-generating carbide particle reinforced ferrite heat-resistant steel
CN101967610B (en) * 2009-07-28 2012-07-04 宝山钢铁股份有限公司 High carbon high silicon martensite stainless steel billet and preparation method thereof
CN107090537A (en) * 2017-04-20 2017-08-25 攀钢集团攀枝花钢铁研究院有限公司 Control the smelting process of Valve Steel field trash
WO2020050727A1 (en) * 2018-09-07 2020-03-12 Milson Foundry Nz Limited Steel alloy

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2359011A1 (en) * 1973-02-22 1974-09-05 Babcock & Wilcox Co COOL AND TEMPERED LOW-ALLOY STEEL
CN101403073B (en) * 2008-11-14 2010-06-02 济南济钢铁合金厂 method of producing for self-generating carbide particle reinforced ferrite heat-resistant steel
CN101967610B (en) * 2009-07-28 2012-07-04 宝山钢铁股份有限公司 High carbon high silicon martensite stainless steel billet and preparation method thereof
CN107090537A (en) * 2017-04-20 2017-08-25 攀钢集团攀枝花钢铁研究院有限公司 Control the smelting process of Valve Steel field trash
WO2020050727A1 (en) * 2018-09-07 2020-03-12 Milson Foundry Nz Limited Steel alloy

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