EP2626157A2 - Composant en une seule pièce et son procédé de fabrication - Google Patents

Composant en une seule pièce et son procédé de fabrication Download PDF

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Publication number
EP2626157A2
EP2626157A2 EP13152616.2A EP13152616A EP2626157A2 EP 2626157 A2 EP2626157 A2 EP 2626157A2 EP 13152616 A EP13152616 A EP 13152616A EP 2626157 A2 EP2626157 A2 EP 2626157A2
Authority
EP
European Patent Office
Prior art keywords
base material
piece component
material particles
hard material
carbide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13152616.2A
Other languages
German (de)
English (en)
Other versions
EP2626157B1 (fr
EP2626157A3 (fr
Inventor
Tilla Haubold
Matthias Schumacher
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 EP2626157A2 publication Critical patent/EP2626157A2/fr
Publication of EP2626157A3 publication Critical patent/EP2626157A3/fr
Application granted granted Critical
Publication of EP2626157B1 publication Critical patent/EP2626157B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • 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
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • 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
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • 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
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/35—Iron
    • 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
    • B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
    • B22F2302/10—Carbide
    • 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
    • B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
    • B22F2302/20—Nitride
    • 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
    • B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
    • B22F2302/25—Oxide
    • 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
    • B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
    • B22F2302/25—Oxide
    • B22F2302/253—Aluminum oxide (Al2O3)
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite

Definitions

  • the present invention relates to a one-piece component having a first and second portion and a method for producing the one-piece component by means of MIM (Metal Injection Molding) injection molding.
  • MIM Metal Injection Molding
  • the one-piece component according to the invention with the features of claim 1 has the advantage that it is particularly simple and inexpensive and can be produced in a very short time.
  • a first portion of a base material and a second portion of the base material is made as a binder with embedded hard material particles by MIM technology.
  • the second portion is molded onto the first portion to achieve a material connection between the two sections.
  • the first and second portion can be made by injection molding in an injection mold.
  • the base material is preferably an austenitic or ferritic steel, in particular comprising Fe and Cr.
  • the hard material particles are preferably oxides, in particular Al 2 O 3 , ZrO 2 and / or Y 2 O 3 .
  • the hard material particles are carbides, in particular titanium carbide or tungsten carbide or niobium carbide or tantalum carbide.
  • the hard-material particles are nidride, in particular titanium nitride. It should be noted with regard to the hard material particles mentioned that they can be mixed with the base material alone to form the material for the second portion or can be mixed in any desired combination to form a sprayable metal powder.
  • a volume fraction of the hard material particles in the material for the second subregion is in a range from 5% by volume to 20% by volume, and is particularly preferably 10% by volume.
  • the one-piece component is preferably a component of a motor vehicle, in particular an internal combustion engine.
  • the one-piece component is a piston or a cylinder or a valve component, in particular a valve seat or a valve stop or a needle stop.
  • the one-piece component is part of gasoline injectors or fuel pumps.
  • the invention further relates to a method for producing a one-piece component by means of 2-component MIM technology.
  • the inventive method comprises the steps of spraying a first portion of the integral component of a base material and the injection molding of a second portion of the first portion, wherein as material for the second portion of the base material is used as a binder with embedded hard material particles.
  • the one-piece component according to the invention is preferably used in applications in which the one-piece component is moved or serves as a stop. This may be possible, for example, in piston pumps, in split valves, in injectors, in other mechanical valves. Furthermore, use in fuel-carrying components, in particular for fuels with poor lubricating properties, for example components for gasoline engines, is possible. In particular, a use as injection valve, metering valve, flow control valve, quantity control valve or fuel pump in question.
  • FIG. 1 a one-piece component 1 according to a first preferred embodiment of the invention explained in detail.
  • the one-piece component 1 comprises a first portion 2 of a base material and a second portion 3 of a material which comprises the base material as a binder and embedded hard material particles. In this case, a cohesive connection between the first portion 2 and the second portion 3 is formed.
  • the one-piece component 1 is produced by means of 2-component MIM injection molding, wherein in a first step first the first portion 2 and in a second step the second portion 3 is molded onto the first portion 2.
  • Metal powders can be injection-molded by using the MIM technique, an austenitic or ferritic steel being preferably used for the base material and the relatively inexpensive base material being able to be used as a binder with additionally stored hard material particles for the material of the second subarea 3.
  • a low cost binder for the hard material particles e.g. suitable oxides or carbides or nitrides are used.
  • FIG. 1 shown one-piece component is a piston for a piston engine and has the wear-resistant layer on an outer periphery of the piston. Since the second portion 3 forms the outer layer, there is a high resistance to fretting and thus a long life. Furthermore, the reduction of friction also leads to a lower heat development with corresponding advantages.
  • FIG. 2 shows as an alternative one-piece component a cylinder in which the second portion 3 forms the tread of the cylinder.
  • FIGS. 3 to 5 show alternative embodiments of the invention which may be used as injectors or switching valves.
  • the second portion 3 each forms a valve seat: in FIG. 3 for a ball valve, in FIG. 4 for a cone valve and in FIG. 5 for a flat seat valve.
  • both the valve seat is formed as a one-piece component with first and second portion 2, 3, and the valve closure member 6, which has a first portion 7 and a second portion 8 as a valve closing surface.
  • the double arrows in the FIGS. 3 to 5 in each case indicate the direction of movement of the valve members.
  • the flat seat valve 5 is designed as a slide valve.
  • FIG. 6 shows a further application of the idea according to the invention in a one-piece stop 10, which has a first portion 11 and a second harder portion 12.
  • the stop 10 limits a movement of the valve member 13 in the direction of the arrow A.
  • the stopper 10 abuts with the second portion 12 on a counter-stop 14, wherein the counter-stop 14 may also be made of a first and second portion according to the idea of the invention ,
  • a cost-producible one-piece component can be provided, which is produced by means of a 2-component MIM injection molding process.
  • an austenitic or ferritic steel based on iron and chromium, with a weight fraction of 13% chromium, is preferably used as the base material for all described embodiments.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Powder Metallurgy (AREA)
  • Fuel-Injection Apparatus (AREA)
EP13152616.2A 2012-02-09 2013-01-25 Composant en une seule pièce et son procédé de fabrication Active EP2626157B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012201880A DE102012201880A1 (de) 2012-02-09 2012-02-09 Einstückiges Bauteil sowie Verfahren zu dessen Herstellung

Publications (3)

Publication Number Publication Date
EP2626157A2 true EP2626157A2 (fr) 2013-08-14
EP2626157A3 EP2626157A3 (fr) 2017-09-06
EP2626157B1 EP2626157B1 (fr) 2021-07-28

Family

ID=47683544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13152616.2A Active EP2626157B1 (fr) 2012-02-09 2013-01-25 Composant en une seule pièce et son procédé de fabrication

Country Status (3)

Country Link
US (2) US9409234B2 (fr)
EP (1) EP2626157B1 (fr)
DE (1) DE102012201880A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106015727A (zh) * 2016-07-07 2016-10-12 无锡戴尔普机电设备有限公司 一种新型风量调节阀端板材料
US9966425B1 (en) 2017-02-28 2018-05-08 United Microelectronics Corp. Method for fabricating a MIM capacitor

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756865A (en) * 1971-11-01 1973-09-04 Gillette Co Razor blades and process for making same
US4491558A (en) * 1981-11-05 1985-01-01 Minnesota Mining And Manufacturing Company Austenitic manganese steel-containing composite article
JPH03232906A (ja) * 1990-02-06 1991-10-16 Daido Steel Co Ltd 複合焼結品
US5364586A (en) * 1993-08-17 1994-11-15 Ultram International L.L.C. Process for the production of porous membranes
SE503422C2 (sv) * 1994-01-19 1996-06-10 Soederfors Powder Ab Sätt vid framställning av en sammansatt produkt av rostfria stål
US6315935B1 (en) * 1999-08-26 2001-11-13 Alliedsignal Inc. Low pressure injection molding of knife blades from metal feedstocks
US6660225B2 (en) * 2000-12-11 2003-12-09 Advanced Materials Technologies Pte, Ltd. Method to form multi-material components
ATE517708T1 (de) * 2001-12-05 2011-08-15 Baker Hughes Inc Konsolidiertes hartmaterial und anwendungen
US20060037660A1 (en) * 2004-08-20 2006-02-23 Kinnally Kevin J Hydrogen conduit and process for producing same
US8601907B2 (en) * 2004-09-24 2013-12-10 Kai U.S.A., Ltd. Knife blade manufacturing process
US7393559B2 (en) * 2005-02-01 2008-07-01 The Regents Of The University Of California Methods for production of FGM net shaped body for various applications
US8057914B2 (en) * 2007-03-26 2011-11-15 Howmedica Osteonics Corp. Method for fabricating a medical component from a material having a high carbide phase and such medical component
WO2009029993A1 (fr) * 2007-09-07 2009-03-12 The University Of Queensland Procédé de moulage par injection de métal
SE534696C2 (sv) * 2010-03-26 2011-11-22 Diamorph Ab En funktionell gradientmaterialkomponent och metod för att producera en sådan komponent
US9789543B2 (en) * 2010-04-30 2017-10-17 Accellent Inc. Pressure forming of metal and ceramic powders

Non-Patent Citations (1)

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Title
None

Also Published As

Publication number Publication date
DE102012201880A1 (de) 2013-08-14
EP2626157B1 (fr) 2021-07-28
US9409234B2 (en) 2016-08-09
US20160297008A1 (en) 2016-10-13
US20130209815A1 (en) 2013-08-15
EP2626157A3 (fr) 2017-09-06

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