WO1992013666A1 - Verfahren zum herstellen eines oberflächengehärteten werkstückes aus sintereisen - Google Patents

Verfahren zum herstellen eines oberflächengehärteten werkstückes aus sintereisen Download PDF

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Publication number
WO1992013666A1
WO1992013666A1 PCT/DE1992/000074 DE9200074W WO9213666A1 WO 1992013666 A1 WO1992013666 A1 WO 1992013666A1 DE 9200074 W DE9200074 W DE 9200074W WO 9213666 A1 WO9213666 A1 WO 9213666A1
Authority
WO
WIPO (PCT)
Prior art keywords
workpiece
steam treatment
producing
mbar
subjected
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.)
Ceased
Application number
PCT/DE1992/000074
Other languages
German (de)
English (en)
French (fr)
Inventor
Rudolf Schneider
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to KR1019930702125A priority Critical patent/KR930703105A/ko
Priority to EP92903727A priority patent/EP0570421B1/de
Priority to DE59203117T priority patent/DE59203117D1/de
Priority to JP4503243A priority patent/JPH06504814A/ja
Publication of WO1992013666A1 publication Critical patent/WO1992013666A1/de
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • 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
    • C23C8/02—Pretreatment of the material to be coated
    • 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
    • C23C8/10—Oxidising
    • C23C8/16—Oxidising using oxygen-containing compounds, e.g. water, carbon dioxide
    • C23C8/18—Oxidising 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

Definitions

  • the invention relates to a method for producing a
  • DE-OS 33 01 541 proposes the porous workpiece made of sintered iron to produce
  • liquid substances can penetrate into the porous workpiece. Reactions with corrosive agents or the like then occur, the property of the workpiece surface being changed. In order to prevent the penetration of such substances into the surface of a porous workpiece, it is known to coat it with synthetic resin, wax, oily substance or the like.
  • the porosity of sintered workpieces is also disadvantageous when it comes to hardening the surface layer. Through the pores, the gases used for hardening can enter the interior of the
  • Heat treatment is primarily used to achieve greater hardness.
  • As a heat treatment process carburizing,
  • Nitrocarburizing, nitriding and oxidizing are known. Through this
  • the steam treatment is carried out in accordance with the features of claim 1 in such a way that a sufficient pore closure with the least possible
  • Oxide layer density is reached. Surprisingly, these properties can be obtained even at relatively low water vapor temperatures. This results in an economic one
  • the modified water vapor treatment preferably produces an oxide layer of at most 5 ⁇ m, preferably of ⁇ 4 ⁇ m, on the surface of the workpiece. This is done by targeted steam treatment at the specified temperatures and pressures of the superheated steam. The goal is a sufficient pore closure with a minimal oxide layer thickness.
  • the workpiece is in front of the
  • the mechanical processing is preferably carried out by vibratory grinding or by lapping. Mechanical processing is particularly recommended when tight tolerances are specified for dimensional accuracy or when a well-defined layer with tight tolerances is required. Following the mechanical processing, the workpiece is subjected to surface hardening.
  • the above-mentioned method is mainly used in the production of ring gears, with a significantly improved one
  • a ring gear hardened by nitrocarburizing is produced in the following production stages:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Heat Treatment Of Articles (AREA)
PCT/DE1992/000074 1991-02-07 1992-02-06 Verfahren zum herstellen eines oberflächengehärteten werkstückes aus sintereisen Ceased WO1992013666A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019930702125A KR930703105A (ko) 1991-02-07 1992-02-06 소결된 철로부터 표면경화제품을 제조하는 방법
EP92903727A EP0570421B1 (de) 1991-02-07 1992-02-06 Verfahren zum herstellen eines oberflächengehärteten werkstückes aus sintereisen
DE59203117T DE59203117D1 (de) 1991-02-07 1992-02-06 Verfahren zum herstellen eines oberflächengehärteten werkstückes aus sintereisen.
JP4503243A JPH06504814A (ja) 1991-02-07 1992-02-06 焼結鉄からなる表面硬化加工片の製造

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4103692 1991-02-07
DEP4103692.1 1991-02-07
DEP4140148.4 1991-12-05
DE4140148A DE4140148A1 (de) 1991-02-07 1991-12-05 Verfahren zum herstellen eines oberflaechengehaerteten werkstuecks aus sintereisen

Publications (1)

Publication Number Publication Date
WO1992013666A1 true WO1992013666A1 (de) 1992-08-20

Family

ID=25900829

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/000074 Ceased WO1992013666A1 (de) 1991-02-07 1992-02-06 Verfahren zum herstellen eines oberflächengehärteten werkstückes aus sintereisen

Country Status (6)

Country Link
US (1) US5383979A (enExample)
EP (1) EP0570421B1 (enExample)
JP (1) JPH06504814A (enExample)
KR (1) KR930703105A (enExample)
DE (2) DE4140148A1 (enExample)
WO (1) WO1992013666A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3119732B2 (ja) 1992-09-17 2000-12-25 新日本製鐵株式会社 高接触疲労強度歯車の製造方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19917605B4 (de) * 1999-04-19 2005-10-27 Renk Ag Getriebe für Windgeneratoren
US6623237B2 (en) * 2001-08-21 2003-09-23 Delphi Technologies, Inc. Wear resistant fuel pump
JP5731107B2 (ja) * 2009-07-01 2015-06-10 本田技研工業株式会社 窒化部材およびその製造方法
WO2013127905A1 (en) * 2012-02-29 2013-09-06 Höganäs Ab (Publ) Pm automotive component and its manufacture
DE102012219949A1 (de) 2012-10-31 2014-04-30 Schaeffler Technologies Gmbh & Co. Kg Rotor eines Nockenwellenverstellers, Nockenwellenversteller mit einem solchen Rotor und Verfahren zum Herstellen eines Rotors
AT517751B1 (de) * 2015-09-29 2018-04-15 Miba Sinter Austria Gmbh Verfahren zur Herstellung eines Sinterzahnrades
DE102016122826A1 (de) 2016-11-25 2018-05-30 Schaeffler Technologies AG & Co. KG Wellgetriebe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224420A1 (de) * 1981-07-01 1983-03-03 Toyota Jidosha Kogyo K.K., Toyota, Aichi Verfahren zur herstellung eines gleitelements
US4738730A (en) * 1986-02-18 1988-04-19 Lindberg Corporation Steam sealing for nitrogen treated ferrous part
US4799970A (en) * 1985-04-30 1989-01-24 Sumitomo Electric Industries, Ltd. Surface treatment method for improving corrosion resistance of ferrous sintered parts
DE3806933C2 (enExample) * 1988-03-03 1990-03-01 Man Technologie Ag, 8000 Muenchen, De

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3301541A1 (de) * 1983-01-19 1984-07-19 Ringsdorff-Werke GmbH, 5300 Bonn Verfahren zur herstellung oberflaechengehaerteter sinterkoerper

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224420A1 (de) * 1981-07-01 1983-03-03 Toyota Jidosha Kogyo K.K., Toyota, Aichi Verfahren zur herstellung eines gleitelements
US4799970A (en) * 1985-04-30 1989-01-24 Sumitomo Electric Industries, Ltd. Surface treatment method for improving corrosion resistance of ferrous sintered parts
US4738730A (en) * 1986-02-18 1988-04-19 Lindberg Corporation Steam sealing for nitrogen treated ferrous part
DE3806933C2 (enExample) * 1988-03-03 1990-03-01 Man Technologie Ag, 8000 Muenchen, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3119732B2 (ja) 1992-09-17 2000-12-25 新日本製鐵株式会社 高接触疲労強度歯車の製造方法

Also Published As

Publication number Publication date
JPH06504814A (ja) 1994-06-02
DE4140148C2 (enExample) 1993-03-18
US5383979A (en) 1995-01-24
DE59203117D1 (de) 1995-09-07
DE4140148A1 (de) 1992-08-13
EP0570421B1 (de) 1995-08-02
EP0570421A1 (de) 1993-11-24
KR930703105A (ko) 1993-11-29

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