SE9403773D0 - Screw as well as ways to manufacture and process a screw - Google Patents

Screw as well as ways to manufacture and process a screw

Info

Publication number
SE9403773D0
SE9403773D0 SE9403773A SE9403773A SE9403773D0 SE 9403773 D0 SE9403773 D0 SE 9403773D0 SE 9403773 A SE9403773 A SE 9403773A SE 9403773 A SE9403773 A SE 9403773A SE 9403773 D0 SE9403773 D0 SE 9403773D0
Authority
SE
Sweden
Prior art keywords
screw
maximum
ways
manufacture
well
Prior art date
Application number
SE9403773A
Other languages
Swedish (sv)
Other versions
SE9403773L (en
Inventor
Tonny Westlund
Original Assignee
Faestsystem I Karlskoga Ab
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 Faestsystem I Karlskoga Ab filed Critical Faestsystem I Karlskoga Ab
Priority to SE9403773A priority Critical patent/SE9403773L/en
Publication of SE9403773D0 publication Critical patent/SE9403773D0/en
Priority to AU38615/95A priority patent/AU3861595A/en
Priority to PCT/SE1995/001264 priority patent/WO1996014514A1/en
Publication of SE9403773L publication Critical patent/SE9403773L/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
    • 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
    • C23C8/36—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 using ionised gases, e.g. ionitriding
    • C23C8/38—Treatment of ferrous surfaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/04—Hardening by cooling below 0 degrees Celsius

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

A screw consisting mainly of stainless steel with a head (6) and a shank (7) with a point (2) and at least one threaded portion, characterized in that the stainless steel contains a maximum of 0.1 % C, preferably a maximum of 0.08 % C, in that it is stabilized with at least one of the elements niobium, tantalum and titanium in a total content amounting to at least 5 times the carbon content, but a maximum of 1 %, and in that at least the screw point (2) and a length (8) of said at least one threaded part have a surface-hardening layer (3) produced by ion nitriding, which has a thickness of 0.01-0.2 mm and a hardness of at least 900 HV, preferably 1000-1300 HV. The invention also relates to production of a stainless screw by means of a method which comprises ion nitriding.
SE9403773A 1994-11-02 1994-11-02 Screw as well as ways to manufacture and process a screw SE9403773L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9403773A SE9403773L (en) 1994-11-02 1994-11-02 Screw as well as ways to manufacture and process a screw
AU38615/95A AU3861595A (en) 1994-11-02 1995-10-25 A screw and method for the manufacturing and treatment of a screw
PCT/SE1995/001264 WO1996014514A1 (en) 1994-11-02 1995-10-25 A screw and method for the manufacturing and treatment of a screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9403773A SE9403773L (en) 1994-11-02 1994-11-02 Screw as well as ways to manufacture and process a screw

Publications (2)

Publication Number Publication Date
SE9403773D0 true SE9403773D0 (en) 1994-11-02
SE9403773L SE9403773L (en) 1996-05-03

Family

ID=20395841

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9403773A SE9403773L (en) 1994-11-02 1994-11-02 Screw as well as ways to manufacture and process a screw

Country Status (3)

Country Link
AU (1) AU3861595A (en)
SE (1) SE9403773L (en)
WO (1) WO1996014514A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9614303D0 (en) * 1996-07-08 1996-09-04 Nsk Rhp Europe Technology Co Ltd Surface treatment of bearing steels
JP2002323023A (en) * 2001-04-25 2002-11-08 Aoyama Seisakusho Co Ltd Thereaded fastener
JP4851121B2 (en) * 2005-06-13 2012-01-11 本田技研工業株式会社 Screw and screw fastening structure
JP5746832B2 (en) * 2010-06-07 2015-07-08 株式会社田中 Stainless steel screws
DE102010055210A1 (en) * 2010-12-20 2012-06-21 Ejot Gmbh & Co. Kg Low alloy carbon steel screw and method of making such a screw
TWI714846B (en) * 2018-05-09 2021-01-01 國聯螺絲工業股份有限公司 Nitriding heat treatment process for 300 series stainless steel screw fasteners

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872711A (en) * 1981-10-27 1983-04-30 有限会社新城製作所 Drill screw consisting of austenite group stainless steel
ATE117742T1 (en) * 1991-07-18 1995-02-15 Daido Oxygen SCREW MADE OF HARD STAINLESS STEEL AUSTENITIC STEEL.

Also Published As

Publication number Publication date
WO1996014514A1 (en) 1996-05-17
AU3861595A (en) 1996-05-31
SE9403773L (en) 1996-05-03

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