EP3631039A1 - Procédé de fabrication d'un composant comprenant au moins une partie de surface à usure réduite et le composant lui-même - Google Patents

Procédé de fabrication d'un composant comprenant au moins une partie de surface à usure réduite et le composant lui-même

Info

Publication number
EP3631039A1
EP3631039A1 EP18727266.1A EP18727266A EP3631039A1 EP 3631039 A1 EP3631039 A1 EP 3631039A1 EP 18727266 A EP18727266 A EP 18727266A EP 3631039 A1 EP3631039 A1 EP 3631039A1
Authority
EP
European Patent Office
Prior art keywords
component
layer
wear
contact layer
nitrocarburizing
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.)
Pending
Application number
EP18727266.1A
Other languages
German (de)
English (en)
Inventor
Christoph Waletzek
Karl-Otto Englert
Ralf Gragen
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
Publication of EP3631039A1 publication Critical patent/EP3631039A1/fr
Pending 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
    • 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
    • C23C8/28—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 one step
    • C23C8/30—Carbo-nitriding
    • C23C8/32—Carbo-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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • 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
    • C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
    • C23C8/52—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 liquids, e.g. salt baths, liquid suspensions more than one element being applied in one step
    • C23C8/54—Carbo-nitriding
    • C23C8/56—Carbo-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
    • C23C8/80—After-treatment

Definitions

  • the present invention relates to a method for the production of a component, in particular one in tribological contact with another hereby corresponding component with at least one wear-reduced
  • the invention relates to a manufactured according to this manufacturing method component with special properties.
  • the field of application of the invention extends primarily to the production of components which are to be provided with each other in frictional contact with a wear and / or corrosion protection.
  • armature and / or guide sleeves of electromagnetic linear actuators of magnetic pumps in DNOX systems for reducing nitrogen oxides in the exhaust gas have such wear-reduced surface sections.
  • DE 10 2007 0367 12 Al discloses a generic method for producing a component with a wear-reduced surface section.
  • the component is in the form of a side plate for a Sp Dreckbandmechanik comprising a body with a guide groove, wherein a
  • Edge region of the spreader engages.
  • the region of the guide groove is provided at least in sections with a wear-reduced surface section relative to the edge of the spreader belt. While the spreader strip including edge region consists of a hardened steel, the
  • the wear-reduced surface portion from the side window as hereby Corresponding component with a coating of a metal matrix with PTFE particles (Teflon) provided.
  • the metal matrix is preferably a nickel-phosphorus matrix in which the PTFE particles with a diameter of approximately 1 ⁇ m and a proportion of approximately 25% are incorporated.
  • a PTFE coating to improve the tribological properties of a component after the mechanical processing of the component, which is usually designed as a steel component, takes place in the uncured state. Subsequently, the surface of the component is treated by blasting to increase the roughness, in order to increase the adhesive properties of the subsequent coating.
  • a galvanic layer is applied, on which the PTFE coating is applied.
  • the invention includes the procedural teaching that the component after shaping in the region of the surface portion, which
  • nitrocarburizing is a known thermochemical method for enriching the surface layer of the component with nitrogen and carbon. This results in a nitriding layer, consisting of bonding and diffusion layer. In contrast, in simple nitriding, only nitrogen would be incorporated into the component surface.
  • Nitrocarburizing of the surface portion is preferably carried out in the form of gas nitrocarburizing at a process temperature between 400 ° and 600 ° C., preferably between 450 ° to 600 ° C.
  • plasma nitriding and salt bath nitriding could also take place.
  • particularly high adhesive properties of the bonding layer can be achieved in the preferred temperature range.
  • Gas nitrocarburizing can be combined with post oxidation.
  • Gas nitrocarburizing preferably takes place at the indicated process temperature in a gas mixture which contains nitrogen and carbon donating components, preferably ammonia and carbon dioxide.
  • nitrogen and carbon donating components preferably ammonia and carbon dioxide.
  • the aim is to improve the wear resistance and corrosion resistance of low to medium sized sites.
  • the component should be subjected to a cooling step to about 300 ° to 400 ° C, after which only the application of the PTFE coating as a contact layer for wear reduction takes place.
  • This cooling step can be achieved more efficiently by immersing or spraying the component with a liquid PTFE dispersion, so that the necessary cooling to the aforementioned temperature range is combined with the application of the contact layer in the sense of functional integration.
  • the contact layer to be applied to the compound layer may contain not only PTFE but also at least one filler.
  • a filler for example, MoS2 or ZnO is suitable.
  • the coating temperature or the component temperature must be reduced to below 100 ° C. before wetting, for example, and then heated again for crosslinking.
  • the component is preferably fully machined prior to the wear-reducing coating to produce the final component mold.
  • the material used is in particular a free-cutting steel, preferably HSMn30.
  • the shaping can be done so far by machining, for example, turning, drilling or milling.
  • Component pairing tolerance is used with respect to a further component in tribological contact herewith.
  • it is proposed to carry out the bonding layer with a layer thickness in the range between 5 to 15 ⁇ m.
  • the component an anchor or a sleeve of a electromagnetic Hubantriebs, so can be set hereby the residual air gap of this component pairing, to prevent a so-called magnetic sticking.
  • FIG. 1 shows a flow chart representation of method steps for producing a component with a wear-reduced surface section
  • FIG. 2 shows a schematic representation of a metallographic cut of a component coated according to the method according to FIG. 1,
  • FIG. 3 shows a temperature-time diagram of a method sequence in the form of separate batch processes according to a first example
  • Figure 4 is a temperature-time diagram of a process flow in the form of a combined, continuous process according to a second example.
  • the component 1 forms an armature of an electromagnetic linear actuator (not shown here) which is to be provided with a wear-reduced surface section 2 along the entire lateral surface.
  • an electromagnetic linear actuator (not shown here)
  • a wear-reduced surface section 2 along the entire lateral surface.
  • a free-cutting steel of the grade llSMn30 steel is selected in a first step. Starting from this, the steel material is machined in a subsequent step a by turning and milling to obtain the desired approximately cylindrical shape. This machining takes place in a soft, ie uncured, material state.
  • a contact layer 4 to the compound layer 3 by spraying the component 1 with a PTFE dispersion, which also contains fillers in addition to PTFE. Subsequently, in the course of the further cooling, a mechanical crosslinking of the contact layer 4 to produce a reliable surface adhesion on the
  • the connecting layer 3 is due to the porosity here not alone as a primer for the
  • FIG. 3 shows a sequence of the method according to the invention in the course of separate batch processes, wherein step b of nitrocarburizing is carried out in an evacuated chamber furnace and the subsequent step of applying the PTFE contact layer by spraying the component outside the chamber furnace.
  • the mechanically finished component is first during a
  • Period I heated to a temperature of about 450 ° to 600 ° C, here a pre-oxidation takes place. During the period II, the
  • Period IV to about 200 ° C by spraying that component surface, which was previously provided as a result of gas nitrocarburizing with a bonding layer.
  • the mechanical crosslinking of the contact layer is carried out on the bonding layer at a temperature of about 350 ° C, to which the component is heated again accordingly.
  • a repeated warming and cooling of the component takes place for carrying out the method according to the invention.
  • a stepwise heating of the component of a temperature of at least 450 ° C is performed. This is a pre-oxidation.
  • the component is controlled by means of liquid nitrogen cooled to about 300 ° to 400 ° C before further quenching takes place by immersing the component in a liquid PTFE dispersion to form the contact layer.
  • Component heat can be carried out a mechanical crosslinking of the contact layer on the previously applied by the gas nitrocarburizing compound layer, which also takes place during the period IV.

Landscapes

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

Abstract

Procédé de fabrication d'un composant (1) et le composant lui-même comportant au moins une partie de surface (2) à usure réduite, qui a) est usinée dans un matériau en acier pour le formage, les étapes suivantes étant suivies : b) nitrocarburation de la partie de surface (2) pour produire une couche de liaison (3), et c) application d'une couche de contact (4) contenant du PTFE sur la couche de liaison (3) du composant (1) étalée dans la zone de la partie de surface (2) pour réduire l'usure.
EP18727266.1A 2017-05-26 2018-05-24 Procédé de fabrication d'un composant comprenant au moins une partie de surface à usure réduite et le composant lui-même Pending EP3631039A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017208915.6A DE102017208915A1 (de) 2017-05-26 2017-05-26 Verfahren zur Herstellung eines Bauteils mit zumindest einem verschleißreduzierten Oberflächenabschnitt sowie Bauteil selbst
PCT/EP2018/063644 WO2018215591A1 (fr) 2017-05-26 2018-05-24 Procédé de fabrication d'un composant comprenant au moins une partie de surface à usure réduite et le composant lui-même

Publications (1)

Publication Number Publication Date
EP3631039A1 true EP3631039A1 (fr) 2020-04-08

Family

ID=62245303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18727266.1A Pending EP3631039A1 (fr) 2017-05-26 2018-05-24 Procédé de fabrication d'un composant comprenant au moins une partie de surface à usure réduite et le composant lui-même

Country Status (3)

Country Link
EP (1) EP3631039A1 (fr)
DE (1) DE102017208915A1 (fr)
WO (1) WO2018215591A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007036712A1 (de) 2007-08-03 2009-02-05 Schaeffler Kg Seitenscheibe für eine Spreizbandmechanik
DE102007059855A1 (de) * 2007-12-12 2009-06-25 Robert Bosch Gmbh Kraftstoffzumesseinheit für eine Kraftstoffhochdruckpumpe und Kraftstoffhochdruckpumpe
US20110151238A1 (en) * 2009-12-17 2011-06-23 Gm Global Technology Operations, Inc. Low-friction coating system and method
US20140311756A1 (en) * 2013-04-22 2014-10-23 Rock Dicke Incorporated Pipe Centralizer Having Low-Friction Coating
DE202015100601U1 (de) * 2015-02-09 2015-03-06 Kendrion (Villingen) Gmbh Sitzventil zum zumindest teilweisen Verschließen und Öffnen eines Leitungssystems

Also Published As

Publication number Publication date
WO2018215591A1 (fr) 2018-11-29
DE102017208915A1 (de) 2018-11-29

Similar Documents

Publication Publication Date Title
DE102012204409B3 (de) Verfahren zur Herstellung eines Wälzlagers und Wälzlager
DE102013010025A1 (de) Verfahren zum Herstellen eines Erzeugnisses aus flexibel gewalztem Bandmaterial
DE102013010024B4 (de) Strukturbauteil für ein Kraftfahrzeug und Verfahren zur Herstellung eines solchen Strukturbauteils
EP3109340B1 (fr) Procédé de fabrication d'une vis et vis
DE102004053935B4 (de) Verfahren zur Wärmebehandlung eines Bauteils aus einem durchhärtenden warmfesten Stahl und Bauteil aus einem durchhärtenden warmfesten Stahl
WO2007137557A2 (fr) Procédé permettant de faire durcir des surfaces de roulement de composants de palier à roulement
DE102012018229A1 (de) Verfahren zur Herstellung eines Nockens
EP3365469B1 (fr) Procédé de fabrication d'un élément structural en acier pour un véhicule
DE19510302C2 (de) Oberflächenbehandelte Kolbenstange und Verfahren zu ihrer Herstellung
DE102018208283A1 (de) Verfahren zum Herstellen eines metallischen Bauteils
EP3631039A1 (fr) Procédé de fabrication d'un composant comprenant au moins une partie de surface à usure réduite et le composant lui-même
DE3139622A1 (de) Verfahren zur gasaufkohlung von stahl
DE102016001059A1 (de) Elektrohydraulisches Ventil und Verfahren zu seiner Herstellung
DE102015006079A1 (de) Bauteil, insbesondere für ein Fahrzeug, sowie Verfahren zum Herstellen eines solchen Bauteils
DE102013225860A1 (de) Gleitlager
DE102011114992B4 (de) Verfahren zum Herstellen eines gehärteten Stahlbauteils
DE102021105576A1 (de) Herstellungsverfahren eines warm umgeformten vorbestimmten Bauteils aus einem Blech
DE102014214640A1 (de) Verfahren zur Herstellung eines Bauteils aus wärmebehandeltem Gusseisen
DE102015209660B4 (de) Verfahren zur Herstellung eines Blechumformteils
DE102014008197A1 (de) Verfahren zum Herstellen eines Hohlkörperbauteils
EP4185787B1 (fr) Procédé de fabrication de disques de freins pour véhicules motorisés
DE102014002312A1 (de) Herstellverfahren einer beschichteten Zylinderlaufbahn eines Kurbelgehäuses einer Hubkolbenmaschine
DE202020003311U1 (de) System zur Herstellung eines oberflächenbehandelten Massivbauteils aus einem Stahlwerkstoff und solches Bauteils
WO2024037954A1 (fr) Procédé de traitement thermique d'aciers au chrome
DE102017005321A1 (de) Verfahren zum Bearbeiten eines Stahlbauteils für einen Kraftwagen und Stahlbauteil für einen Kraftwagen

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200102

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT BOSCH GMBH

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20210118