EP2262599B1 - Net-shape or near net-shape powder isostatic pressing process - Google Patents
Net-shape or near net-shape powder isostatic pressing process Download PDFInfo
- Publication number
- EP2262599B1 EP2262599B1 EP09721920.8A EP09721920A EP2262599B1 EP 2262599 B1 EP2262599 B1 EP 2262599B1 EP 09721920 A EP09721920 A EP 09721920A EP 2262599 B1 EP2262599 B1 EP 2262599B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder
- insert
- containment
- helical
- net
- 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.)
- Not-in-force
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.
- Hot Isostatic Pressing HIPing
- machining With difficulty, straight bores of small length such as 10mm can be machined.
- Prior art in relation to processes for Hot Isostatic Pressing includes US3992202 , WO9411140 , US2005/0214156 , FR2796322 and EP1657010 , but the prior art does not disclose method for the manufacture of net shaped components with helical bores using inserts which are subsequently removed.
- 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 1m 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)
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 (en) | 2008-03-20 | 2009-03-20 | Net-shape or near net-shape powder isostatic pressing process |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2262599A1 EP2262599A1 (en) | 2010-12-22 |
EP2262599B1 true EP2262599B1 (en) | 2014-11-12 |
Family
ID=39386561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09721920.8A Not-in-force EP2262599B1 (en) | 2008-03-20 | 2009-03-20 | Net-shape or near net-shape powder isostatic pressing process |
Country Status (9)
Country | Link |
---|---|
US (1) | US20110033725A1 (ru) |
EP (1) | EP2262599B1 (ru) |
CN (1) | CN102026752A (ru) |
BR (1) | BRPI0909088A2 (ru) |
EA (1) | EA019527B1 (ru) |
ES (1) | ES2530092T3 (ru) |
GB (1) | GB0805242D0 (ru) |
MX (1) | MX2010010146A (ru) |
WO (1) | WO2009115821A1 (ru) |
Families Citing this family (7)
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)
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 |
EP0963267A4 (en) * | 1996-04-15 | 2004-04-14 | Dynamet Holdings Inc | NET SHAPED DIES AND MOLDS AND METHOD OF MANUFACTURING 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 |
-
2008
- 2008-03-20 GB GBGB0805242.5A patent/GB0805242D0/en not_active Ceased
-
2009
- 2009-03-20 EP EP09721920.8A patent/EP2262599B1/en not_active Not-in-force
- 2009-03-20 EA EA201001527A patent/EA019527B1/ru not_active IP Right Cessation
- 2009-03-20 WO PCT/GB2009/000757 patent/WO2009115821A1/en active Application Filing
- 2009-03-20 MX MX2010010146A patent/MX2010010146A/es unknown
- 2009-03-20 BR BRPI0909088A patent/BRPI0909088A2/pt not_active IP Right Cessation
- 2009-03-20 CN CN2009801098127A patent/CN102026752A/zh active Pending
- 2009-03-20 ES ES09721920.8T patent/ES2530092T3/es active Active
- 2009-03-20 US US12/736,207 patent/US20110033725A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20110033725A1 (en) | 2011-02-10 |
MX2010010146A (es) | 2010-10-20 |
BRPI0909088A2 (pt) | 2015-09-29 |
EP2262599A1 (en) | 2010-12-22 |
EA201001527A1 (ru) | 2011-04-29 |
EA019527B1 (ru) | 2014-04-30 |
GB0805242D0 (en) | 2008-04-30 |
ES2530092T3 (es) | 2015-02-26 |
CN102026752A (zh) | 2011-04-20 |
WO2009115821A1 (en) | 2009-09-24 |
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