EP0034761A3 - Method for the surface improvement of machine parts and cutting tools of ferrous alloys - Google Patents

Method for the surface improvement of machine parts and cutting tools of ferrous alloys Download PDF

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Publication number
EP0034761A3
EP0034761A3 EP81100963A EP81100963A EP0034761A3 EP 0034761 A3 EP0034761 A3 EP 0034761A3 EP 81100963 A EP81100963 A EP 81100963A EP 81100963 A EP81100963 A EP 81100963A EP 0034761 A3 EP0034761 A3 EP 0034761A3
Authority
EP
European Patent Office
Prior art keywords
cutting tools
machine parts
treated
ferrous alloys
phase
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.)
Granted
Application number
EP81100963A
Other languages
German (de)
Other versions
EP0034761B1 (en
EP0034761A2 (en
Inventor
Zdzislaw Has
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.)
Politechnika Lodzka
Original Assignee
Politechnika Lodzka
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 Politechnika Lodzka filed Critical Politechnika Lodzka
Priority to AT81100963T priority Critical patent/ATE13696T1/en
Publication of EP0034761A2 publication Critical patent/EP0034761A2/en
Publication of EP0034761A3 publication Critical patent/EP0034761A3/en
Application granted granted Critical
Publication of EP0034761B1 publication Critical patent/EP0034761B1/en
Expired 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
    • C23C8/06—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
    • 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
    • C23C8/34—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 more than one element being applied in more than one step

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatment Of Articles (AREA)
  • Turning (AREA)
  • Electric Cable Installation (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

1. A method for the surface hardening of machine parts and cutting tools made from ferrous alloys by treatment with sulphurous gases and nitriding in an ammonia atmosphere, wherein the machine parts and cutting tools to be treated are brought into a vessel, characterized in that the parts to be treated are heated and the pressure prevailling in the vessel reduced if necessary and then sulphur vapors brought into the vessel for 5 seconds to 60 minutes, that the parts to be treated are then subjected to a two-phase nitriding process in an ammonia atmosphere or in an atmosphere containing ammonia and known gas additives, the nitriding process in the first phase being performed at a pressure at least ten times lower and five times longer than in the second phase of the nitriding process in which the pressure of the treatment atmosphere is lower than 107 kPa (800 Torr).
EP81100963A 1980-02-11 1981-02-11 Method for the surface improvement of machine parts and cutting tools of ferrous alloys Expired EP0034761B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100963T ATE13696T1 (en) 1980-02-11 1981-02-11 PROCESS FOR FINISHING THE SURFACE OF MACHINE PARTS AND CUTTING TOOLS MADE OF FERROUS ALLOYS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL221929 1980-02-11
PL1980221929A PL126128B1 (en) 1980-02-11 1980-02-11 Method of cementation of machine elements and cutting tools

Publications (3)

Publication Number Publication Date
EP0034761A2 EP0034761A2 (en) 1981-09-02
EP0034761A3 true EP0034761A3 (en) 1981-09-09
EP0034761B1 EP0034761B1 (en) 1985-06-05

Family

ID=20001275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100963A Expired EP0034761B1 (en) 1980-02-11 1981-02-11 Method for the surface improvement of machine parts and cutting tools of ferrous alloys

Country Status (6)

Country Link
EP (1) EP0034761B1 (en)
JP (1) JPS56127769A (en)
AT (1) ATE13696T1 (en)
AU (1) AU2516788A (en)
DE (1) DE3170794D1 (en)
PL (1) PL126128B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602233U (en) * 1983-06-16 1985-01-09 三洋電機株式会社 Air conditioner remote controller
JP2607980B2 (en) * 1990-07-05 1997-05-07 日立建機株式会社 Sliding member and gas sulfurizing / nitriding method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1057237A (en) * 1952-05-19 1954-03-05 Partiot Cementation Atel Surface heat treatment process for ferrous metals
FR1104196A (en) * 1954-05-04 1955-11-17 Process for obtaining sulfo-cementation of ferrous alloys, with a view to improving the wear resistance and the coefficient of friction of hardened and hardened steel parts
DE2336680A1 (en) * 1973-07-19 1975-01-30 Degussa Nitriding steel in a low pressure gas atmosphere - by heating the workpiece to the nitriding temp. in a mixt. of ammonia and a carbon gas carrier

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1057237A (en) * 1952-05-19 1954-03-05 Partiot Cementation Atel Surface heat treatment process for ferrous metals
FR1104196A (en) * 1954-05-04 1955-11-17 Process for obtaining sulfo-cementation of ferrous alloys, with a view to improving the wear resistance and the coefficient of friction of hardened and hardened steel parts
DE2336680A1 (en) * 1973-07-19 1975-01-30 Degussa Nitriding steel in a low pressure gas atmosphere - by heating the workpiece to the nitriding temp. in a mixt. of ammonia and a carbon gas carrier

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Band 64, 1966, Spalte 3120b Columbus, Ohio, USA HAS "Sulfatizing and nitriding of high-speed steels in H2S and NH2 gases" & ZESZYTY NAUK POLITCH.LODZ.MECH No. 12, 89-107 (1965) *
CHEMICAL ABSTRACTS, Band 87, 1977 Seite 420, Zusammenfassung 91160n Columbus. Ohio. USA GRABKE et al. "Chemisorption of sulfur on iron and its influence on iron-gas reactions, surface self diffusion and sintering of iron" & React. solids, (Proc. Int. Symp.) 8th, 1976 (Pub. 1977) 55-61. *

Also Published As

Publication number Publication date
JPS56127769A (en) 1981-10-06
ATE13696T1 (en) 1985-06-15
AU2516788A (en) 1989-03-16
DE3170794D1 (en) 1985-07-11
PL221929A1 (en) 1981-08-21
EP0034761B1 (en) 1985-06-05
PL126128B1 (en) 1983-07-30
EP0034761A2 (en) 1981-09-02
JPS5749628B2 (en) 1982-10-22

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