EP2262599A1 - Procédé de compression isostatique de poudre à finition immédiate ou à finition presque immédiate - Google Patents

Procédé de compression isostatique de poudre à finition immédiate ou à finition presque immédiate

Info

Publication number
EP2262599A1
EP2262599A1 EP09721920A EP09721920A EP2262599A1 EP 2262599 A1 EP2262599 A1 EP 2262599A1 EP 09721920 A EP09721920 A EP 09721920A EP 09721920 A EP09721920 A EP 09721920A EP 2262599 A1 EP2262599 A1 EP 2262599A1
Authority
EP
European Patent Office
Prior art keywords
insert
powder
containment
net
mould
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
EP09721920A
Other languages
German (de)
English (en)
Other versions
EP2262599B1 (fr
Inventor
Geoffrey Frederick Archer
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.)
Advanced Interactive Materials Science Ltd
Original Assignee
Advanced Interactive Materials Science Ltd
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 Advanced Interactive Materials Science Ltd filed Critical Advanced Interactive Materials Science Ltd
Publication of EP2262599A1 publication Critical patent/EP2262599A1/fr
Application granted granted Critical
Publication of EP2262599B1 publication Critical patent/EP2262599B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12361—All metal or with adjacent metals having aperture or cut

Definitions

  • the invention relates to net-shape or near net-shape powder isostatic pressing processes, as applied to metallic and/or cermet/MMC (metal matrix composites) powder.
  • the invention is concerned particularly, but not exclusively, with the production of a bore of substantial length, typically longer than 750mm, in a component of hard wear-resistant material.
  • Such components can be made by Hot Isostatic Pressing (HIPing) but it is extremely difficult to produce bores in the formed components by machining. With difficulty, straight bores of small length such as 10mm can be machined.
  • HIPing Hot Isostatic Pressing
  • a method of producing a net or near net-shape component from metal powder comprises producing an insert of accurate dimensions corresponding to the dimensions of a bore to be created in the finished component, the bore having a length of at least 750mm, supporting the insert within a mould cavity, filling the mould cavity with metal powder, subjecting the powder to isostatic pressing, and subsequently removing the material of the insert.
  • the mould may be an independent mould that is removed after an initial step to bind the powder together into a pre-form, and the pre-form is then encapsulated in a suitable containment which may be a canister or a sprayed coating, or a canister of suitable internal shape may be used as the mould, and the canister itself is evacuated prior to HIPing
  • the insert is supported in position in the mould cavity by a plurality of formers of a material that is compatible with the finally consolidated powder.
  • the insert may be a metallic insert of a material that is subsequently removable by chemical etching, preferably copper.
  • the chemical etching may be assisted by electrolytic reaction.
  • the insert need only be coated with a material that can subsequently be removed by etching, in order to release the insert, which can then be extracted.
  • the metallic insert is coated with a suitable material that provides a diffusion barrier to prevent the material of the insert from diffusing by atomic diffusion into the powder being consolidated during HIPing.
  • the invention can enable a helical bore to be provided in a component.
  • Such a helical bore could be used for various purposes, such as to convey a fluid and/or to accommodate an electrical or fibre-optic cable to provide sensor or control system communications for example.
  • a copper rod of a diameter in the range of 6 to 10 mm for example and of length greater than 2m, is first bent into a helix of the required dimensions and this is then held in position in a powder containment prior to filling the containment with powder. The containment enclosing the powder, rod and former, is then consolidated by solid state diffusion using the HIPing method.
  • the diffusion barrier may be Al 2 O 3 applied by vapour phase deposition or by high velocity spraying.
  • the diffusion barrier may be created by applying boron nitride as an aqueous solution by spraying.
  • a preformed metal tube of 6mm to 10mm diameter for example, is filled with ceramic particles and is bent to a helical shape and placed within the powder containment prior to filling the containment with powder.
  • the tube is held in position with formers compatible with the finally consolidated powder.
  • the entire containment encompassing the metallic and/or cermet/MMC powder is then consolidated by solid state diffusion using the HIPing method.
  • the metal tube may become totally diffusion bonded into the consolidated component but the ceramic particles will remain in the pre-process particle form and thereby can be removed mechanically via vibration techniques to leave a clean hole through the component.
  • the invention can be used to provide one or more holes in one or more helical lobes provided internally of the stator body of a helicoidal positive displacement pump, the stator body having a length of as much as 2m or more.
  • Such stator bodies can be used to form the radially outer part of a linear motor and/or mud pump used in down-hole drilling.
  • the hole or holes can be positioned to follow the core of a helical flute, which may have a pitch of about Im and a radius of 50mm about the body axis.
  • the helical lobes are defined by helical grooves in a mandrel that is positioned in the mould during pressing of the stator body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

L'invention porte sur un procédé de production d'un composant à finition immédiate ou à finition presque immédiate à partir d'une poudre métallique. Le procédé consiste à produire un insert de dimensions précises correspondant aux dimensions d'un alésage à créer dans le composant fini, l'alésage ayant une longueur d'au moins 750 mm ; à supporter l'insert dans une cavité de moule ; à remplir la cavité de moule avec la poudre métallique ; à soumettre la poudre à une compression isostatique ; et à retirer ultérieurement le matériau de l'insert. Le moule peut être un moule indépendant retiré après une étape initiale pour lier la poudre en une préforme ; la préforme est ensuite encapsulée dans un confinement approprié, tel qu'une boîte métallique ou un revêtement pulvérisé. L'insert peut être un insert métallique en matériau apte à être ultérieurement éliminé par attaque chimique, tel que le cuivre. L'insert peut être revêtu d'un matériau apte à être retiré par attaque et à permettre à l'insert d'être extrait. Un insert métallique peut être revêtu d'un matériau qui fournit une barrière à la diffusion pour prévenir la diffusion de l'insert par diffusion atomique dans la poudre consolidée durant une compression isostatique à chaud.
EP09721920.8A 2008-03-20 2009-03-20 Procédé de compression isostatique de poudre à finition immédiate ou à finition presque immédiate Not-in-force EP2262599B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0805242.5A GB0805242D0 (en) 2008-03-20 2008-03-20 Net-shape or near net-shape powder isostatic pressing process
PCT/GB2009/000757 WO2009115821A1 (fr) 2008-03-20 2009-03-20 Procédé de compression isostatique de poudre à finition immédiate ou à finition presque immédiate

Publications (2)

Publication Number Publication Date
EP2262599A1 true EP2262599A1 (fr) 2010-12-22
EP2262599B1 EP2262599B1 (fr) 2014-11-12

Family

ID=39386561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09721920.8A Not-in-force EP2262599B1 (fr) 2008-03-20 2009-03-20 Procédé de compression isostatique de poudre à finition immédiate ou à finition presque immédiate

Country Status (9)

Country Link
US (1) US20110033725A1 (fr)
EP (1) EP2262599B1 (fr)
CN (1) CN102026752A (fr)
BR (1) BRPI0909088A2 (fr)
EA (1) EA019527B1 (fr)
ES (1) ES2530092T3 (fr)
GB (1) GB0805242D0 (fr)
MX (1) MX2010010146A (fr)
WO (1) WO2009115821A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0922488D0 (en) * 2009-12-23 2010-02-03 Advanced Interactive Materials Improvements in or relating to hot isostatic pressing
CN102366836B (zh) * 2011-10-25 2013-08-14 航天材料及工艺研究所 一种高性能钛合金盲管的制造方法
CN103586468B (zh) * 2013-11-08 2015-04-15 中国航空工业集团公司北京航空材料研究院 一种TiAl合金粉末近净成型的方法
CN104972114A (zh) * 2014-04-25 2015-10-14 华中科技大学 一种具有特殊功能层复杂零件的热等静压一体化成形方法
JP6417586B2 (ja) * 2014-08-25 2018-11-07 セイコーエプソン株式会社 造形方法および造形物
CN105458265B (zh) * 2015-11-14 2018-07-31 华中科技大学 一种可回收重复使用的热等静压用控型模芯、其制造方法及其应用
CN108421980B (zh) * 2018-03-16 2019-07-19 华中科技大学 一种基于增材制造的热等静压成形方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975121A (en) * 1973-11-14 1976-08-17 Smith International, Inc. Wafer elements for progressing cavity stators
ZA79440B (en) * 1978-02-10 1980-09-24 Oakes Ltd E T Drive arrangement
JPH0723486B2 (ja) * 1987-06-17 1995-03-15 株式会社神戸製鋼所 多軸複合シリンダの製造法
US5171139A (en) * 1991-11-26 1992-12-15 Smith International, Inc. Moineau motor with conduits through the stator
US5832604A (en) * 1995-09-08 1998-11-10 Hydro-Drill, Inc. Method of manufacturing segmented stators for helical gear pumps and motors
US5956561A (en) * 1996-04-15 1999-09-21 Dynamet Incorporated Net shaped dies and molds and method for producing the same
US5822853A (en) * 1996-06-24 1998-10-20 General Electric Company Method for making cylindrical structures with cooling channels
JPH1121116A (ja) * 1997-06-30 1999-01-26 Nippon Steel Corp 窒化ホウ素で被覆された炭素質粉末および炭素質繊維
SE519139C2 (sv) * 1998-05-12 2003-01-21 Hans Goeran Ohlsson Metod att bilda hål eller håligheter i sintrade och bearbetade metallföremål
US6241494B1 (en) * 1998-09-18 2001-06-05 Schlumberger Technology Company Non-elastomeric stator and downhole drilling motors incorporating same
US6837915B2 (en) * 2002-09-20 2005-01-04 Scm Metal Products, Inc. High density, metal-based materials having low coefficients of friction and wear rates
US7739792B2 (en) * 2006-07-31 2010-06-22 Schlumberger Technology Corporation Method of forming controlled thickness resilient material lined stator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009115821A1 *

Also Published As

Publication number Publication date
EP2262599B1 (fr) 2014-11-12
CN102026752A (zh) 2011-04-20
WO2009115821A1 (fr) 2009-09-24
MX2010010146A (es) 2010-10-20
BRPI0909088A2 (pt) 2015-09-29
US20110033725A1 (en) 2011-02-10
GB0805242D0 (en) 2008-04-30
EA201001527A1 (ru) 2011-04-29
ES2530092T3 (es) 2015-02-26
EA019527B1 (ru) 2014-04-30

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