SE9403773L - 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
SE9403773L
SE9403773L SE9403773A SE9403773A SE9403773L SE 9403773 L SE9403773 L SE 9403773L SE 9403773 A SE9403773 A SE 9403773A SE 9403773 A SE9403773 A SE 9403773A SE 9403773 L SE9403773 L SE 9403773L
Authority
SE
Sweden
Prior art keywords
screw
maximum
ways
manufacture
well
Prior art date
Application number
SE9403773A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9403773D0 (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)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (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 SE9403773D0 (en) 1994-11-02
SE9403773L true 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
AU3861595A (en) 1996-05-31
SE9403773D0 (en) 1994-11-02
WO1996014514A1 (en) 1996-05-17

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