EP3237648B1 - Procédé de traitement superficiel d'une pièce en acier par nitruration ou nitrocarburation, oxydation puis imprégnation - Google Patents

Procédé de traitement superficiel d'une pièce en acier par nitruration ou nitrocarburation, oxydation puis imprégnation Download PDF

Info

Publication number
EP3237648B1
EP3237648B1 EP15821125.0A EP15821125A EP3237648B1 EP 3237648 B1 EP3237648 B1 EP 3237648B1 EP 15821125 A EP15821125 A EP 15821125A EP 3237648 B1 EP3237648 B1 EP 3237648B1
Authority
EP
European Patent Office
Prior art keywords
carried out
nitriding
minutes
impregnation
treatment
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.)
Active
Application number
EP15821125.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3237648A1 (fr
Inventor
Pierre-Louis MAGDINIER
Marie-Noëlle DESBOUCHE-JANNY
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.)
Hydromecanique et Frottement SAS
Original Assignee
HEF SAS
Hydromecanique et Frottement SAS
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 HEF SAS, Hydromecanique et Frottement SAS filed Critical HEF SAS
Priority to PL15821125T priority Critical patent/PL3237648T3/pl
Priority to SI201531209T priority patent/SI3237648T1/sl
Publication of EP3237648A1 publication Critical patent/EP3237648A1/fr
Application granted granted Critical
Publication of EP3237648B1 publication Critical patent/EP3237648B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C23C8/80—After-treatment
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • 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
    • C23C8/34—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
    • 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
    • C23C8/58—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 more than one step

Definitions

  • the invention relates to a method of surface treatment of a piece of ferrous metal, in practice made of alloyed steel or not, having good resistance to corrosion by virtue of an impregnation treatment and a piece of steel having a high resistance to wear and corrosion which is dry to the touch.
  • the invention applies to all types of mechanical parts intended to provide a mechanical function in service and having to have a high hardness, a long resistance to corrosion and wear. This is for example the case of many parts used in the automotive or aeronautical field.
  • nitriding and nitrocarburizing are thermochemical treatments of nitrogen supply (nitrogen and carbon respectively) by combination-diffusion: there is formed on the surface a combination layer formed of iron nitrides (there are several possible phases), under which nitrogen is present by diffusion.
  • the Applicant has itself proposed treatment methods aimed at obtaining even better corrosion resistance.
  • oxidizing so as to obtain a nitrided layer comprising a deep and compact sublayer and a surface layer of well controlled porosity and finally to the deposition of a polymer of thickness between 3 and 20 ⁇ m, made of fluoroethylene-propylene (FEP) ), or even polytetrafluoroethylene (PTFE), or even polymers or copolymers of fluorinated or silicone polyurethanes, or polyamides-polyimides.
  • FEP fluoroethylene-propylene
  • PTFE polytetrafluoroethylene
  • BS salt spray
  • the parts are preferably nitrided in baths of molten salts based on cyanate ions then oxidized and finally impregnated with a hydrophobic wax.
  • Nitriding followed by oxidation leads to the formation of a layer consisting of a compact deep sub-layer and a surface layer whose porosity is well controlled.
  • the impregnation wax is an organic compound with a high molecular weight of between 500 and 10,000 and of surface tension, in the liquid state, of between 10 and 73 mN / m.
  • the contact angle between the solid phase and the surface layer and the wax in the liquid state is between 0 and 75 degrees.
  • the wax is chosen from natural waxes, synthetic polyethylene, polypropylene, polyesters, fluorinated waxes or modified petroleum residues.
  • This solution simultaneously improves the corrosion resistance and friction properties of ferrous metal parts.
  • the parts thus treated have good corrosion resistance in standard salt spray combined with good friction properties.
  • the patent EP - 0 560 641 describes a process for phosphating steel parts to improve the resistance to corrosion and wear, making it possible to obtain specific surface characteristics resulting from a phosphating treatment preceded by a nitriding operation in a bath of molten salts containing sulfur species, from a nitriding operation in a bath of molten salts followed by a conventional sulfurization treatment, or from a metal deposit followed by a conventional sulfurization operation.
  • the corrosion resistance values of the parts thus treated, after exposure to salt spray are of the order of 900 to 1200 hours.
  • the patent EP - 1,180,552 relates to a method of surface treatment of mechanical parts subjected to both wear and corrosion by having a roughness conducive to good lubrication and according to which nitriding is carried out by immersion between 500 ° C and 700 ° C parts in a nitriding bath of molten salts containing alkaline cyanates and carbonates in precise ranges but free of species sulfur, then an oxidation is carried out in an aqueous oxidizing solution below 200 ° C.
  • the document WO2012 / 146839 targeted a nitriding treatment leading to an appropriate roughness without requiring a finishing treatment; he described a bath of molten salts for nitriding mechanical steel parts having specific contents of alkali metal chloride, alkali metal carbonate, alkali metal cyanate and cyanide ions.
  • the corrosion resistance measured in salt spray was between 240 and 650 hours.
  • finishing treatment deposit of a varnish or of a wax, or phosphating treatment
  • nitriding or nitrocarburizing treatment oxidation of mechanical parts made of ferrous material
  • certain finishing treatments result in the fact that the surface of the parts thus treated tends to transfer a little oil onto the surfaces with which it can come into contact and tends to collect dust. the surrounding environment; this is hardly compatible with an additional step such as overmolding.
  • the object of the invention is to remedy these drawbacks in a simple, safe, efficient and rational manner, while achieving very high levels of resistance to corrosion and to wear, better than with baths. current impregnation.
  • the impregnation in a bath in accordance with the invention leads to a substantial improvement in corrosion resistance compared to a conventional bath, based on oils, acids and ethanol.
  • the parts are dry to the touch (this is understood to mean the absence of oil transfer to an antagonistic surface), hence the absence of tendency to pick up surrounding dust and the ability to undergo post-treatment such as overmolding.
  • a part according to the invention obtained by the process of the invention, namely a steel part having a high resistance to wear and corrosion, comprising a combination layer. at least 8 micrometers, a layer of oxides of thickness between 0.1 and 3 micrometers and an impregnation layer which is dry to the touch.
  • ambient temperature does not designate a precise temperature but the fact that the treatment is done without temperature control (it is therefore neither necessary to heat the bath nor to cool it), and that it can be do at the temperature induced by the environment, even if it varies in proportions that can be significant during the year, for example between 15 ° C and 50 ° C.
  • the nitriding / nitrocarburizing step is carried out so that the thickness of the combination layer obtained is at least 10 micrometers.
  • the synthetic phenolic additive is a compound of formula C 15 H 24 0.
  • the impregnation bath further comprises at least one additive chosen from the group consisting of calcium or sodium sulfonate, phosphites, diphenylamines, zinc dithiophosphate, nitrites, phosphoramides.
  • the content of such additives is advantageously at most equal to 5%.
  • the bath is preferably formed from 90% +/- 0.5% by weight of solvent, 10% +/- 0.5% by weight of paraffin oils and between 0.01% and not more of 1% +/- 0.1% of synthetic phenolic additive of formula C 15 H 24 O.
  • the impregnation is carried out by soaking for a period of approximately 15 minutes.
  • This soaking step is advantageously followed by a natural or accelerated drying operation by steaming.
  • the nitriding / nitrocarburizing step is carried out in a bath of molten salts containing from 14% to 44% by weight of alkaline cyanates at a temperature of 550 ° C to 650 ° C for at least 45 minutes; preferably, this nitriding / nitrocarburizing bath contains from 14% to 18% by weight of alkaline cyanates.
  • this treatment is carried out at a temperature of 590 ° C for 90 minutes to 100 minutes; according to a variant, also advantageous, the nitriding / nitrocarburizing treatment in salt baths melted is carried out at a temperature of 630 ° C for about 45 minutes to 50 minutes.
  • the nitriding / nitrocarburizing step is carried out in a gaseous medium between 500 ° C and 600 ° C containing ammonia.
  • the nitriding / nitrocarburizing step is carried out in an ionic medium (plasma) in a medium comprising at least nitrogen and hydrogen under reduced pressure.
  • the oxidation step is carried out in a bath of molten salts containing carbonates, nitrates and alkali hydroxides.
  • the molten oxidation salt bath contains alkaline nitrates, alkali carbonates and alkali hydroxides.
  • the oxidation step is carried out at a temperature of 430 ° C to 470 ° C for 15 to 20 minutes.
  • the oxidation is carried out in an aqueous bath containing alkali hydroxides, alkaline nitrates and alkaline nitrites.
  • the oxidation step it is advantageous for the oxidation step to be carried out at a temperature of 110 ° C to 130 ° C for 15 to 20 minutes.
  • the oxidation step is carried out in a gaseous medium mainly consisting of water vapor, at a temperature of 450 ° C. to 550 ° C. for 30 to 120 minutes.
  • these tests were carried out by combining several types of nitriding or nitrocarburizing treatments, known per se, several types of oxidation treatment, known per se, and several types of impregnation. These tests were carried out on ferrous metal parts with smooth areas and sharp edges. More particularly, tests were carried out on grooved axes in annealed and rectified XC45 steel, having a smooth bearing and a threaded bearing.
  • NITRU1 to NITRU3 treatments in molten salt baths.
  • EP - 1,180,552 with: * the NITRU1 treatment located in the preferred low temperature range and the preferred average treatment time (from 45 minutes to 50 minutes), * the NITRU2 treatment located in the same preferred low temperature range but with the maximum treatment time (outside the preferred zone, ie from 90 minutes to 100 minutes) and * the NITRU3 treatment located in the preferred high temperature range with the preferred average treatment time (45 minutes to 50 minutes).
  • the parameters of these treatments are summarized in the table below.
  • the NITRU1 treatment results in a combination layer of thickness less than 8 micrometers
  • the NITRU2 and NITRU3 treatments result in a layer whose thickness exceeds this threshold, and is preferably even at least 10 micrometers. In practice, it seems unnecessary to seek to exceed 25 micrometers, so that an effective range for the thickness of the layer appears to be 10 to 25 micrometers.
  • these three treatments correspond to a treatment in a bath of molten salts containing from 14% to 44% by weight of alkaline cyanates (preferably from 14% to 18%) at a temperature of 550 ° C to 650 ° C (preferably from 590 ° C to 630 ° C) for at least 45 minutes (it does not seem useful to exceed 120 minutes, even 90 minutes).
  • NITRU4 a gaseous medium
  • NITRU5 a conventional treatment in ionic medium (plasma), NITRU5 (targeting a thickness of combination layer of at least 8 ⁇ m and advantageously between 10 and 25 ⁇ m).
  • the NITRU4 treatment in a gaseous medium was carried out in an oven between approximately 500 and 600 ° C. under a controlled atmosphere comprising ammonia.
  • the processing time has been established to guarantee a combination layer thickness of at least 8 micrometers, preferably greater than 10 micrometers.
  • the NITRU5 treatment it was carried out in an ionic medium (plasma) in a mixture comprising at least nitrogen and hydrogen, under reduced pressure (that is to say under a pressure below atmospheric pressure , typically less than 0.1 atmosphere).
  • the processing time has also been established to guarantee a combination layer thickness of at least 8 micrometers, preferably at least 10 micrometers.
  • the thickness of the treatment layer indicated does not take into account the diffusion layer (for nitrogen as well as for carbon).
  • Oxidations Ox1 and Ox2 correspond substantially, respectively, to the oxidation in salt bath and to the aqueous oxidation of the document EP1180552 cited above, while the nitrocarburizing (NITRU5) and Ox3 oxidation treatment parameters, in an ionized medium, correspond substantially to Example 9 of the document EP0497663 .
  • the oxidations were carried out so as to obtain oxidation layers of thickness between 0.1 and 3 micrometers.
  • impregnation treatment 1 did not induce dimensional variation.
  • the surface of the parts was dry to the touch; this implies that, on the one hand, the surface of these parts does not tend to collect dust and that, on the other hand, these parts are compatible with an after-treatment such as overmolding.
  • NITRU 1 NITRU 2 NITRU 3 NITRU 4 NITRU 5 Treatment 1 Ox1 + Imp2 96h 360h 912h 792h 384h 72h Treatment 2 Ox1 + lmp1 96h 960h 1368h 1368h 1008h 576h Treatment 3 Ox2 + lmp2 96h 312h 576h 792h 504h 72h Treatment 4 Ox2 + lmp1 96h 360h 1056h 1056h 720h 360h Treatment 5 Ox3 + lmp2 96h 192h 456h 552h 312h 24h Treatment 6 Ox3 + lmp1 96h 264h 888h 792h 552h 72h Treatment 7 Ox0 + Imp2 96h 96h 456h 384h 48h 48h Treatment 8 Ox0 + Imp1 96h 120h 504h 624h 360h 336h
  • the oxidation-impregnation treatment does not matter when there is no nitriding / nitrocarburizing (the corrosion resistance remains at 96 h, in the first column).
  • the increase in corrosion resistance is at least of the order of 200 hours.
  • the new impregnation results in an increase in the corrosion resistance of the order of 300 hours; in the case of NITRU5 combined with oxidation in an ionic liquid medium (oxidation 1 - treatments 1 and 2), the increase is even of the order of 500 hours.
  • the improvement in corrosion resistance is, for type 2 and 3 oxidations (treatments 3 to 6) of at least 250 hours for the NITRU3 treatment and even 450 hours for the treatment NITRU2. With type 2 oxidation (treatments 3 and 4) corrosion resistance exceeding the threshold of 1000 hours is obtained.
  • the impregnation bath 1 has a surprising synergistic effect with the nitriding / nitrocarburizing treatments NITRU2 and NITRU3 provided that the nitriding / nitrocarburizing is followed by a type 1 or 2 oxidation. , an optimum seems to be obtained when the oxidation treatment is type 1.
  • the particular composition of the impregnation bath considered in the tests falls into a more general composition, namely a bath formed of at least 70% by weight, to within 1%, of a solvent formed of a mixture of hydrocarbons formed from a cut of C9 to C17 alkanes, from 10% to 30% by weight, to within 1%, of at least one paraffin oil composed of a cut of C16 to C32 alkanes and of minus an additive of the synthetic phenolic additive type at a concentration of between 0.01% and 3% by weight, at room temperature.
  • the solvent content is preferably between 80% and 90% by weight; likewise, the content of paraffin oil is preferably between 10% and 20% by weight.
  • the cut of alkanes in the solvent is preferably from C9 to C14.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Chemical Treatment Of Metals (AREA)
EP15821125.0A 2014-12-23 2015-12-15 Procédé de traitement superficiel d'une pièce en acier par nitruration ou nitrocarburation, oxydation puis imprégnation Active EP3237648B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL15821125T PL3237648T3 (pl) 2014-12-23 2015-12-15 Sposób obróbki powierzchniowej elementu ze stali poprzez azotowanie albo węgloazotowanie, oksydowanie, a następnie impregnację
SI201531209T SI3237648T1 (sl) 2014-12-23 2015-12-15 Postopek za površinsko obdelavo kosa jekla z nitriranjem ali nitrokarboriranjem, oksidiranjem, potem impregniranjem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1463252A FR3030578B1 (fr) 2014-12-23 2014-12-23 Procede de traitement superficiel d'une piece en acier par nitruration ou nitrocarburation, oxydation puis impregnation
PCT/FR2015/053511 WO2016102813A1 (fr) 2014-12-23 2015-12-15 Procédé de traitement superficiel d'une pièce en acier par nitruration ou nitrocarburation, oxydation puis imprégnation

Publications (2)

Publication Number Publication Date
EP3237648A1 EP3237648A1 (fr) 2017-11-01
EP3237648B1 true EP3237648B1 (fr) 2020-03-18

Family

ID=52684489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15821125.0A Active EP3237648B1 (fr) 2014-12-23 2015-12-15 Procédé de traitement superficiel d'une pièce en acier par nitruration ou nitrocarburation, oxydation puis imprégnation

Country Status (24)

Country Link
US (1) US10774414B2 (zh)
EP (1) EP3237648B1 (zh)
JP (1) JP6608450B2 (zh)
KR (1) KR102455917B1 (zh)
CN (1) CN107109617B (zh)
AU (1) AU2015370805B2 (zh)
BR (1) BR112017011508B1 (zh)
CA (1) CA2968630C (zh)
DK (1) DK3237648T3 (zh)
ES (1) ES2785599T3 (zh)
FR (1) FR3030578B1 (zh)
HU (1) HUE049293T2 (zh)
MX (1) MX2017008334A (zh)
MY (1) MY188711A (zh)
PH (1) PH12017500936B1 (zh)
PL (1) PL3237648T3 (zh)
PT (1) PT3237648T (zh)
RU (1) RU2696992C2 (zh)
SG (1) SG11201704798RA (zh)
SI (1) SI3237648T1 (zh)
TN (1) TN2017000216A1 (zh)
TW (1) TWI683036B (zh)
WO (1) WO2016102813A1 (zh)
ZA (1) ZA201704730B (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108359785B (zh) * 2018-03-19 2019-12-17 盐城工学院 一种W6Mo5Cr4V2高速钢拉刀的强韧化处理方法
CN110423977B (zh) * 2019-09-05 2021-06-18 合肥工业大学 一种以化学浸镀铁为预处理的铝材料气体渗氮方法
FR3105262B1 (fr) * 2019-12-24 2022-04-15 Hydromecanique & Frottement Procédé et installation de traitement d’une pièce en métal ferreux
RU2736289C1 (ru) * 2020-03-05 2020-11-13 Федеральное государственное бюджетное образовательное учреждение высшего образования "Ростовский государственный университет путей сообщения" (ФГБОУ ВО РГУПС) Способ азотирования деталей из легированных сталей
RU2737796C1 (ru) * 2020-03-05 2020-12-03 Федеральное государственное бюджетное образовательное учреждение высшего образования "Ростовский государственный университет путей сообщения" (ФГБОУ ВО РГУПС) Состав компаунда для азотирования деталей из легированных сталей
CN111423817A (zh) * 2020-05-28 2020-07-17 眉山市三泰铁路车辆配件有限公司 一种铸铁制品专用的气体qpq耦合剂及其制备方法
US11590485B2 (en) 2021-01-13 2023-02-28 Saudi Arabian Oil Company Process for modifying a hydroprocessing catalyst
CN112935737A (zh) * 2021-03-25 2021-06-11 上齿集团有限公司 一种新型螺旋锥齿轮干切齿方法
FR3141702A1 (fr) * 2022-11-07 2024-05-10 Hydromecanique Et Frottement Liquide d’imprégnation, procédé de traitement avec un tel liquide d’imprégnation, et pièce traitée obtenue

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55125267A (en) * 1979-03-22 1980-09-26 Kawasaki Heavy Ind Ltd Surface treating method of improving abrasion resistance and corrosion resistance of iron and steel
BR8107846A (pt) 1980-12-03 1982-09-08 Lucas Industries Ltd Componente metalico de aco
JPS57141464A (en) * 1980-12-03 1982-09-01 Lucas Industries Ltd Metal member working method
EP0074211B1 (en) * 1981-09-05 1987-11-04 LUCAS INDUSTRIES public limited company Coated metal substrate and method of coating a metal substrate
ZA827448B (en) * 1981-10-15 1983-08-31 Lucas Ind Plc Corrosion resistant steel components and method of manufacture thereof
JPS5977138A (ja) * 1982-10-26 1984-05-02 Aisin Chem Co Ltd 車輌用摩擦材
GB8310102D0 (en) 1983-04-14 1983-05-18 Lucas Ind Plc Corrosion resistant steel components
JPH0257735A (ja) * 1988-08-19 1990-02-27 Toyoda Gosei Co Ltd 防振ゴム
DE4027011A1 (de) * 1990-08-27 1992-03-05 Degussa Verfahren zur verbesserung der korrosionsbestaendigkeit nitrocarburierter bauteile aus eisenwerkstoffen
FR2672059B1 (fr) * 1991-01-30 1995-04-28 Stephanois Rech Mec Procede pour conferer a des pieces en metal ferreux, nitrurees puis oxydees, une excellente resistance a la corrosion tout en conservant les proprietes acquises de friction.
FR2679258B1 (fr) * 1991-07-16 1993-11-19 Centre Stephanois Recherc Meca Procede de traitement de pieces en metal ferreux pour ameliorer simultanement leur resistance a la corrosion et leurs proprietes de friction.
KR100215252B1 (ko) * 1991-07-16 1999-08-16 쥐. 엘 뽈띠 내식성과 마찰 특성이 동시에 개선된 철계 금속 부품
FR2688517B1 (fr) 1992-03-10 1994-06-03 Stephanois Rech Procede de phosphatation de pieces en acier, pour ameliorer leurs resistances a la corrosion et a l'usure.
JPH083721A (ja) * 1994-06-13 1996-01-09 Kayaba Ind Co Ltd ピストンロッドの表面処理方法
US5714015A (en) * 1996-04-22 1998-02-03 Frantz Manufacturing Ferritic nitrocarburization process for steel balls
JP2001323939A (ja) * 2000-05-18 2001-11-22 Nsk Ltd 転がり軸受
FR2812888B1 (fr) * 2000-08-14 2003-09-05 Stephanois Rech Mec Procede de traitement superficiel de pieces mecaniques soumise a la fois a l'usure et a la corrosion
JP4998654B2 (ja) * 2001-01-31 2012-08-15 日立オートモティブシステムズ株式会社 鋼部材のガス軟窒化処理方法
RU2230824C2 (ru) * 2002-04-09 2004-06-20 Общество с ограниченной ответственностью "Борец" Способ химико-термической обработки материала на основе сплава железа, материал на основе сплава железа и деталь ступени погружного центробежного насоса
RU2230825C2 (ru) * 2002-08-30 2004-06-20 Общество с ограниченной ответственностью "Борец" Способ химико-термической обработки материала на основе порошковых сплавов железа и деталь ступени погружного центробежного насоса
FR2972459B1 (fr) 2011-03-11 2013-04-12 Hydromecanique & Frottement Bains de sels fondus pour la nitruration de pieces mecaniques en acier, et un procede de mise en oeuvre

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US20170349997A1 (en) 2017-12-07
CN107109617A (zh) 2017-08-29
PH12017500936A1 (en) 2017-11-20
FR3030578A1 (fr) 2016-06-24
AU2015370805A1 (en) 2017-08-10
CA2968630C (fr) 2019-08-27
CN107109617B (zh) 2020-01-14
SI3237648T1 (sl) 2020-09-30
RU2017126188A (ru) 2019-01-24
AU2015370805B2 (en) 2020-10-15
PT3237648T (pt) 2020-05-27
TWI683036B (zh) 2020-01-21
RU2696992C2 (ru) 2019-08-08
BR112017011508B1 (pt) 2021-08-10
DK3237648T3 (da) 2020-05-11
JP6608450B2 (ja) 2019-11-20
PH12017500936B1 (en) 2017-11-20
RU2017126188A3 (zh) 2019-06-07
MX2017008334A (es) 2018-04-24
JP2018502220A (ja) 2018-01-25
HUE049293T2 (hu) 2020-09-28
BR112017011508A2 (pt) 2018-02-27
CA2968630A1 (fr) 2016-06-30
PL3237648T3 (pl) 2020-08-24
US10774414B2 (en) 2020-09-15
FR3030578B1 (fr) 2017-02-10
SG11201704798RA (en) 2017-07-28
KR20170097736A (ko) 2017-08-28
TW201631183A (zh) 2016-09-01
EP3237648A1 (fr) 2017-11-01
MY188711A (en) 2021-12-24
ES2785599T3 (es) 2020-10-07
KR102455917B1 (ko) 2022-10-17
WO2016102813A1 (fr) 2016-06-30
ZA201704730B (en) 2018-05-30
TN2017000216A1 (fr) 2018-10-19

Similar Documents

Publication Publication Date Title
EP3237648B1 (fr) Procédé de traitement superficiel d'une pièce en acier par nitruration ou nitrocarburation, oxydation puis imprégnation
FR2731232A1 (fr) Procede de traitement de surfaces ferreuses soumises a des sollicitations elevees de frottement
EP2683845B1 (fr) Bain de sels fondus pour la nitruration de pieces mecaniques en acier, et un procede de mise en oeuvre
EP0524037B1 (fr) Procédé de traitement de pièces en métal ferreux pour améliorer simultanément leur résistance à la corrosion et leurs propriétés de friction
EP0497663B2 (fr) Procédé pour conférer à des pièces en métal ferreux, nitrurées puis oxydées, une excellente résistance à la corrosion tout en conservant les propriétés acquises de friction
WO2013117759A1 (fr) Procédé d'anodisation de pièces en alliage d'aluminium
EP2703516A2 (en) Manufacturing method of cast-iron friction member
EP3056583A1 (fr) Procédé de fabrication d'une pièce en acier faiblement allié nitruré
EP1180552B1 (fr) Procédé de traitement superficiel de pièces mécaniques soumises à la fois à l'usure et à la corrosion
WO2006111661A1 (fr) Couple d'organes de guidage dont l'un est en un acier particulier conduisant à des performances anti-grippage améliorées
EP3556900B1 (en) Corrosion-resistant member
EP1801262B1 (fr) Procédé de traitement par carboxylatation de surfaces métalliques, utilisation de ce procédé pour la protection temporaire contre la corrosion, et procédé de fabrication d'une tôle mise en forme ainsi carboxylatée
EP4045689A1 (fr) Procédé de traitement d'une pièce en métal ferreux et pièce en métal ferreux
JP2006037152A (ja) 硬質皮膜被覆部材の製造方法及びその製法による皮膜
WO2024100345A1 (fr) Liquide d'imprégnation, procédé de traitement avec un tel liquide d'imprégnation, et pièce traitée obtenue
JP2005163071A (ja) 硬質炭素被膜及びその製造方法
JP2005246468A (ja) 潤滑剤付着性と耐焼付き性に優れた温熱間加工用被覆工具
WO2012153412A1 (ja) アルミニウム合金の表面改質方法及び摺動部材

Legal Events

Date Code Title Description
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: 20170717

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

DAX Request for extension of the european patent (deleted)
RAV Requested validation state of the european patent: fee paid

Extension state: MA

Effective date: 20170721

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190329

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

INTC Intention to grant announced (deleted)
RIN1 Information on inventor provided before grant (corrected)

Inventor name: MAGDINIER, PIERRE-LOUIS

Inventor name: DESBOUCHE-JANNY, MARIE-NOELLE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20191011

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602015049103

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1245991

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200415

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20200506

REG Reference to a national code

Ref country code: FI

Ref legal event code: FGE

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Ref document number: 3237648

Country of ref document: PT

Date of ref document: 20200527

Kind code of ref document: T

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20200519

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20200318

REG Reference to a national code

Ref country code: EE

Ref legal event code: FG4A

Ref document number: E019216

Country of ref document: EE

Effective date: 20200430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200318

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 34260

Country of ref document: SK

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200318

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200318

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200619

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E049293

Country of ref document: HU

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2785599

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20201007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200318

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200318

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200718

REG Reference to a national code

Ref country code: AT

Ref legal event code: UEP

Ref document number: 1245991

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200318

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602015049103

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20201221

REG Reference to a national code

Ref country code: HU

Ref legal event code: HC9C

Owner name: H.E.F., FR

VS25 Lapsed in a validation state [announced via postgrant information from nat. office to epo]

Ref country code: MA

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200318

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200318

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200318

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200318

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200318

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200318

REG Reference to a national code

Ref country code: HU

Ref legal event code: HC9C

Owner name: H.E.F., FR

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230515

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20231122

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SK

Payment date: 20231124

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231113

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20231130

Year of fee payment: 9

Ref country code: SI

Payment date: 20231121

Year of fee payment: 9

Ref country code: SE

Payment date: 20231123

Year of fee payment: 9

Ref country code: RO

Payment date: 20231127

Year of fee payment: 9

Ref country code: PT

Payment date: 20231117

Year of fee payment: 9

Ref country code: NO

Payment date: 20231128

Year of fee payment: 9

Ref country code: IT

Payment date: 20231122

Year of fee payment: 9

Ref country code: IE

Payment date: 20231122

Year of fee payment: 9

Ref country code: HU

Payment date: 20231130

Year of fee payment: 9

Ref country code: FR

Payment date: 20231227

Year of fee payment: 9

Ref country code: FI

Payment date: 20231120

Year of fee payment: 9

Ref country code: EE

Payment date: 20231122

Year of fee payment: 9

Ref country code: DK

Payment date: 20231129

Year of fee payment: 9

Ref country code: DE

Payment date: 20231122

Year of fee payment: 9

Ref country code: CZ

Payment date: 20231122

Year of fee payment: 9

Ref country code: BG

Payment date: 20231130

Year of fee payment: 9

Ref country code: AT

Payment date: 20231122

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20231201

Year of fee payment: 9

Ref country code: BE

Payment date: 20231121

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20240111

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20240102

Year of fee payment: 9