WO2006010450A1 - Tige de piston comprenant une couche de revetement en alliage de cobalt - Google Patents

Tige de piston comprenant une couche de revetement en alliage de cobalt Download PDF

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Publication number
WO2006010450A1
WO2006010450A1 PCT/EP2005/007401 EP2005007401W WO2006010450A1 WO 2006010450 A1 WO2006010450 A1 WO 2006010450A1 EP 2005007401 W EP2005007401 W EP 2005007401W WO 2006010450 A1 WO2006010450 A1 WO 2006010450A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston rod
weight percent
cover layer
microns
rod according
Prior art date
Application number
PCT/EP2005/007401
Other languages
German (de)
English (en)
Inventor
Marius Van Der Heijden
Original Assignee
Bosch Rexroth Ag
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 Bosch Rexroth Ag filed Critical Bosch Rexroth Ag
Priority to DE112005001756T priority Critical patent/DE112005001756A5/de
Publication of WO2006010450A1 publication Critical patent/WO2006010450A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/144—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/32—Bonding taking account of the properties of the material involved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34—Laser welding for purposes other than joining
    • B23K26/342—Build-up welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • B23K35/0244—Powders, particles or spheres; Preforms made therefrom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3046—Co as the principal constituent
    • 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
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/08—Metallic material containing only metal elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/003—Pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/34—Coated articles, e.g. plated or painted; Surface treated articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/18—Dissimilar materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/18—Dissimilar materials
    • B23K2103/26—Alloys of Nickel and Cobalt and Chromium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26

Definitions

  • the invention relates to a piston rod according to the preamble of patent claim 1.
  • Hydraulic cylinder piston rods which are used near water or in the water in industry, off-shore, bridges, and locks, are exposed to aggressive environmental conditions requiring special piston rod corrosion protection, usually made of ordinary carbon steel do.
  • piston rods are provided with a metallic layer of chromium or a nickel-chromium alloy.
  • a metallic layer is chemically susceptible in an aggressive environment. It occurs corrosion and in particular so-called pitting, which makes the piston rod unusable after some time.
  • Titanium oxide has the disadvantage that it is a semiconductor and tends to pitting together with the metallic adhesive layer.
  • alumina alone is brittle and tends to crack under stress.
  • Another disadvantage is that the mixture has a relatively high coefficient of friction and thus the piston rod seals are heavily loaded.
  • the object of the present invention is to provide a piston rod for a hydraulic cylinder, which has a cover layer with high corrosion resistance and a low coefficient of friction.
  • a cover layer of a cobalt-based alloy is applied to the piston rod of a hydraulic cylinder.
  • This alloy has a high corrosion resistance, so that the pitting is suppressed. Furthermore, it has a low coefficient of friction, which not only improves the response of the piston rod, but also the wear on the
  • Piston rod seals is reduced. Furthermore, the application of an adhesive layer to the piston rod is not required, so that the production of the piston rod coated according to the invention is simplified.
  • a particularly good topcoat can be achieved when the alloy contains about 26 weight percent chromium, 9 weight percent nickel, 5 weight percent molybdenum, 2 weight percent tungsten, 0.06 weight percent carbon, 0.5 weight percent silicon, and about 3 weight percent iron besides cobalt.
  • the application of the cover layer can be carried out by laser deposition welding or plasma spraying.
  • the alloy is in powder form and preferably has a particle size between 40 microns and 200 microns. Depending on the grade of the alloy, the particle size preferably moves between 45 microns and 150 microns or 53 microns _ and 180 microns.
  • the cover layer is applied in a layer thickness of about 150 microns to about 1000 microns.
  • a profile for a displacement measuring system can be integrated, so that the respective piston stroke can be detected.
  • the cover layer is ground off in such a way that a smooth surface is formed on the outer surface of which the profile is not shown.
  • FIGURE shows a longitudinal section through a portion of a piston rod according to the invention.
  • the piston rod 2 according to the invention of a hydraulic cylinder has a base body 4, in which a plurality of transversely extending to the longitudinal direction, evenly spaced transverse grooves 6 are introduced. During a stroke of the piston rod 2, a magnetic field is generated by the transverse grooves 6, the changes of which can be detected by a displacement transducer 8.
  • the main body 4 is preferably made of ordinary carbon steel.
  • a cover layer 10 is applied, which consists of a cobalt-based alloy.
  • the alloy contains about 26 weight percent chromium, 9 weight percent nickel, 5 weight percent molybdenum, 2 weight percent tungsten, 0.06 weight percent carbon, 0.5 weight percent silicon, and about 3 weight percent iron.
  • the alloy is in powder form and has a particle size between 40 microns and 200 microns. Depending on the grade of the alloy, the particle size is preferably 45 microns to 150 microns or 53 microns to 180 microns.
  • the cover layer 10 is applied by laser deposition welding or by plasma spraying with a layer thickness of about 150 micrometers up to 1000 micrometers.
  • the laser deposition welding is characterized by a low thermal load on the piston rod 2 and a high dimensional stability.
  • the inventive alloy is particularly good weldability due to their good elongation.
  • a laser beam is preferably directed perpendicularly to the base body 4 and focused in such a way that a local melt pool is formed on the base body 4.
  • a protective gas stream is directed, which blows the alloy in powder form at the same time in the molten bath. Due to the high thermal conductivity of the base body 4 and the rapid relative movement between the base body 4 and the laser beam, the molten bath is cooled immediately after the injection of the powder.
  • the cover layer 10 is a very homogeneous and pore-free cover layer 10 with little mixing of the base material, ie the respective surface portion of the base body 4, so that the laser deposition welding, inter alia, is particularly suitable for piston rods 2 with integrated profiles for WegmessSysteme.
  • the transverse grooves 6 are also visible in the surface 12 thereof. Since the cover layer 10 is relatively uneven, it is ground down until a completely flat, smooth surface forms over the base body 4, in which the transverse grooves 6 do not are more visible. Accordingly, the depth of the ablation is greater than the depth of the transverse grooves. 6
  • an arc burning in a nozzle heats an inert gas stream of, for example, argon, nitrogen or helium to about 15,000 degrees Celsius, which leads to cleavage of the molecular gas and partial ionization of the atoms.
  • the plasma flows out of the nozzle at high speed.
  • the flow velocity of the plasma jet can be close to the speed of sound.
  • the alloy is injected to form the cover layer 10 in powder form by means of a carrier gas.
  • the particles are in the plasma stream for about 0.5 ms. They are melted and fired on the adhesive layer 10.
  • the particles Upon impact with the base body 4, the particles are flattened and cooled by the heat transfer into the base 4 from instantaneously, so that they solidify and shrink.
  • the resulting cover layer 10 adheres predominantly by mechanical clamping to the base body 4th
  • the plasma spraying process (PTA or plasma impregnated are) due to the increased thermal load the risk that the transverse grooves 6 and thus the profile of the WegmessSystems melts. To prevent this danger, the plasma spraying process mainly applied to piston rods without integrated transverse grooves 6.
  • Hydraulic cylinder with a metallic base body, on which a cover layer of a cobalt-based alloy is applied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

La présente invention concerne une tige de piston destinée à un cylindre hydraulique, comprenant un corps principal métallique sur lequel est appliquée une couche de revêtement en alliage à base de cobalt.
PCT/EP2005/007401 2004-07-26 2005-07-08 Tige de piston comprenant une couche de revetement en alliage de cobalt WO2006010450A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112005001756T DE112005001756A5 (de) 2004-07-26 2005-07-08 Kolbenstange mit Legierung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004036190.8 2004-07-26
DE102004036190 2004-07-26

Publications (1)

Publication Number Publication Date
WO2006010450A1 true WO2006010450A1 (fr) 2006-02-02

Family

ID=34972489

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/007401 WO2006010450A1 (fr) 2004-07-26 2005-07-08 Tige de piston comprenant une couche de revetement en alliage de cobalt

Country Status (2)

Country Link
DE (1) DE112005001756A5 (fr)
WO (1) WO2006010450A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103775634A (zh) * 2014-02-21 2014-05-07 四川金星压缩机制造有限公司 复合涂层活塞杆及其制造方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1297758A (en) * 1917-11-10 1919-03-18 Sargent & Co Lock.
US1975818A (en) * 1932-08-24 1934-10-09 Aluminum Co Of America Coating for pistons
US2575214A (en) * 1948-09-30 1951-11-13 Wright Aeronautical Corp Piston with plated piston ring grooves
US3674447A (en) * 1969-08-04 1972-07-04 Du Pont Nickel or cobalt wear-resistant compositions and coatings
JPS6289563A (ja) * 1985-10-14 1987-04-24 Toyota Motor Corp 断熱ピストンの製造方法
JPH04119265A (ja) * 1990-05-08 1992-04-20 Riken Corp 内燃機関の耐摩耗性摺動部材
GB2272959A (en) * 1992-11-28 1994-06-01 T & N Technology Ltd Hard wearing surfaces for piston grooves
US5810992A (en) * 1997-02-28 1998-09-22 Hughes Electronics Corporation Electroplating of iron-cobalt alloy onto aluminum alloy parts
DE19948701A1 (de) * 1999-10-06 2001-04-26 Inst Energetik Und Umwelt Ggmb Verfahren zur Ausbildung von Verschleißschutzschichten auf Oberflächen

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1297758A (en) * 1917-11-10 1919-03-18 Sargent & Co Lock.
US1975818A (en) * 1932-08-24 1934-10-09 Aluminum Co Of America Coating for pistons
US2575214A (en) * 1948-09-30 1951-11-13 Wright Aeronautical Corp Piston with plated piston ring grooves
US3674447A (en) * 1969-08-04 1972-07-04 Du Pont Nickel or cobalt wear-resistant compositions and coatings
JPS6289563A (ja) * 1985-10-14 1987-04-24 Toyota Motor Corp 断熱ピストンの製造方法
JPH04119265A (ja) * 1990-05-08 1992-04-20 Riken Corp 内燃機関の耐摩耗性摺動部材
GB2272959A (en) * 1992-11-28 1994-06-01 T & N Technology Ltd Hard wearing surfaces for piston grooves
US5810992A (en) * 1997-02-28 1998-09-22 Hughes Electronics Corporation Electroplating of iron-cobalt alloy onto aluminum alloy parts
DE19948701A1 (de) * 1999-10-06 2001-04-26 Inst Energetik Und Umwelt Ggmb Verfahren zur Ausbildung von Verschleißschutzschichten auf Oberflächen

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DATABASE CA [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; 19 April 2000 (2000-04-19), LI, JIANXIA ET AL: "Repair of 30CrMnSiA steel piston rod", XP002345382, retrieved from STN Database accession no. 2000:248743 *
DIANDU YU HUANBAO , 20(1), 34-35 CODEN: DYHUEU; ISSN: 1000-4742, 2000 *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 296 (M - 627) 25 September 1987 (1987-09-25) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 374 (M - 1293) 11 August 1992 (1992-08-11) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103775634A (zh) * 2014-02-21 2014-05-07 四川金星压缩机制造有限公司 复合涂层活塞杆及其制造方法

Also Published As

Publication number Publication date
DE112005001756A5 (de) 2007-06-28

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