US20080236107A1 - Sealing System for High-Pressure and Temperature Containers - Google Patents
Sealing System for High-Pressure and Temperature Containers Download PDFInfo
- Publication number
- US20080236107A1 US20080236107A1 US10/593,077 US59307705A US2008236107A1 US 20080236107 A1 US20080236107 A1 US 20080236107A1 US 59307705 A US59307705 A US 59307705A US 2008236107 A1 US2008236107 A1 US 2008236107A1
- Authority
- US
- United States
- Prior art keywords
- container
- head
- piston
- sealing means
- coinable
- 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.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0881—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by plastic deformation of the packing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/001—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a flexible element, e.g. diaphragm, urged by fluid pressure; Isostatic presses
- B30B11/002—Isostatic press chambers; Press stands therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/24—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings with radially or tangentially compressed packing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/26—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings
- F16J15/28—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings with sealing rings made of metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/56—Other sealings for reciprocating rods
Definitions
- the present invention relates in general to the production of a sealing system for high-pressure and high-temperature containers and provides an apparatus and a method using this sealing system.
- the apparatus to which the invention relates is more particularly of the type comprising:
- This apparatus can be used to carry out technological processes which require particular high-pressure treatments, typically at more than 1000 bar, and at high temperatures, for instance of the order of 450-550° C.
- the hot isostatic pressing (HIP) process is a particular instance of these technological processes; in this process, the container contains a bath of melted salts with a low melting point, in the liquid state, which is then pressurised by means of the piston associated with the head and which acts as a means for applying pressure to a casting immersed in a bath.
- HIP hot isostatic pressing
- the head may move between a raised open position and a lowered position, in which the head acts as a cover directly closing the inlet of the container, through the interposition of an annular sealing member between the respective facing surfaces; in the closed position, the seal between the piston and the head adapted to ensure appropriate sliding of the piston within the head is provided by means of at least one sealing member within the head.
- the present invention relates to a sealing apparatus of the type described above, characterised in that it comprises an auxiliary cover, which can be associated in a leak-tight manner with the inlet of the high-pressure container, in a position interposed between the container and the head, this cover being provided with an opening in which the piston can slide and coinable sealing means associated with the opening in order to provide a pressurised seal between the piston and the cover in the position in which the moving head hermetically closes the container.
- the moving head in particular comprises coining means adapted to cause the coining by plastic deformation of these sealing means, in its hermetic closure position.
- the invention further relates to a method using the sealing apparatus described above, as set out in the following claims.
- FIG. 1 is a partially exploded section through an apparatus of the invention
- FIG. 2 is a view in section through the apparatus of FIG. 1 , in the closed configuration
- FIG. 3 is a view in section through a detail of the apparatus in relation to the coinable sealing means, the latter being shown before and after coining.
- a high-pressure and high-temperature container of a type known per se is shown by 2 and internally contains a volume 4 adapted to contain a material to be pressurised, for instance a mass of salts of low melting point in the liquid state.
- the container 2 has an upper inlet 6 whose contour is associated with a toroidal sealing gasket 8 , for instance a copper gasket.
- a head moving in the vertical direction F 1 is shown by 10 , a piston 12 being mounted to slide in this head.
- a bushing 14 inserted in a seat 16 of the head and fixed therein by means of a closure plate 18 , is used to ensure appropriate sliding of the piston within the head 10 .
- An annular flange insert 20 provided with an axial opening in which the piston can slide is associated with a seat 36 at the lower end of the head 10 , facing the container 2 .
- the flange insert 20 is preferably formed by a material having better properties of mechanical and thermal strength than the material forming the head.
- An auxiliary annular cover 22 moving vertically and/or horizontally is shown by 22 and is able to engage the contour of the inlet 6 of the container 2 in a leak-tight manner with the assistance of the gasket 8 .
- the auxiliary cover 22 has an axial opening 24 , in which the piston 12 slides in a leak-tight manner.
- the opening 24 has a seat 26 , formed for instance by a widened section of the opening 24 , in which an annular sealing gasket, of coinable material, i.e. capable of plastic deformation as a result of the pressure exerted by coining means 30 associated with the head 10 , can be inserted.
- an annular sealing gasket of coinable material, i.e. capable of plastic deformation as a result of the pressure exerted by coining means 30 associated with the head 10 , can be inserted.
- the coining means may in particular be formed by an annular formation 30 of the flange insert 20 , which formation—in the position in which the annular insert is inserted into the seat 22 of the head 10 —projects downwards beyond the lower end surface 32 of the head and can be inserted into the coinable gasket seat 26 .
- the coinable gasket may be formed by a copper or aluminium rod.
- the moving cover 22 When the method to pressurise the container is actuated, the moving cover 22 is positioned to bear on the contour of the inlet 6 of the container 2 , with a sealing gasket 8 which exerts a seal between the surface of the contour of the inlet of the container and the lower surface 34 of the cover.
- the coinable gasket 28 is inserted in the seat 26 . This closes the head 10 on the cover 22 , bringing the head into the closed position shown in FIG. 2 .
- the gasket 28 and the insert 20 are shown in dashed lines in the position immediately preceding the beginning of coining.
- the position of the insert 20 , after coining, and the gasket in its deformed configuration, shown by 28 a , in which this gasket has assumed the shape of the seat 26 are shown in continuous lines.
- the gasket exerts an appropriate seal both in the axial direction of the piston and in the plane at right angles to the axis of the piston.
- the sliding of the piston within the head is ensured both by the bushing 14 and by appropriate plays between the piston 12 , the flange insert 20 and the cover 22 .
- the method involves the pressurisation of the volume 4 within the container 2 by means of the descent of the piston and the maintenance of the pressure for the required cycle time.
- the subsequent stages include the operation to raise and retract the piston and the movement of the head into the open position.
- the movement of the auxiliary cover 22 may therefore take place by vertical and/or lateral displacement in order to enable the insertion of a new coinable seal and a further treatment cycle.
- the coined gasket makes it possible to achieve adequate pressure and temperature sealing even at pressures of more than 1000 bar and high temperatures of the order of 450-550° C. or more.
- the gasket can be particularly rapidly replaced with no need to shut down the pressurisation process.
- the replacement of the gasket may in particular be masked in the cycle time.
- a second auxiliary cover 22 by removing the coined gasket used in a preceding cycle and positioning a new coinable gasket during the pressing cycle time, in which a first auxiliary cover is used; this characteristic feature is particularly advantageous in hot isostatic pressing processes, in which the treatment cycle time is typically in the range of 15-40 seconds.
- coinable gasket materials which are of low cost and suitable for recycling, for instance copper or aluminium materials, can be used.
Abstract
Description
- The present invention relates in general to the production of a sealing system for high-pressure and high-temperature containers and provides an apparatus and a method using this sealing system.
- The apparatus to which the invention relates is more particularly of the type comprising:
-
- a container for high pressures defining a volume adapted to contain a material to be pressurised, provided with an inlet for the introduction of the material into this volume,
- a moving head adapted hermetically to close the pressurised container, and
- a piston mounted to slide in a leak-tight manner through the head and moving between a retracted position and a forward position in which it places the inner volume of the container under pressure.
- This apparatus can be used to carry out technological processes which require particular high-pressure treatments, typically at more than 1000 bar, and at high temperatures, for instance of the order of 450-550° C.
- The hot isostatic pressing (HIP) process is a particular instance of these technological processes; in this process, the container contains a bath of melted salts with a low melting point, in the liquid state, which is then pressurised by means of the piston associated with the head and which acts as a means for applying pressure to a casting immersed in a bath.
- In known systems, the head may move between a raised open position and a lowered position, in which the head acts as a cover directly closing the inlet of the container, through the interposition of an annular sealing member between the respective facing surfaces; in the closed position, the seal between the piston and the head adapted to ensure appropriate sliding of the piston within the head is provided by means of at least one sealing member within the head.
- For this purpose, bearing in mind the high temperature which—by conduction—occurs within the head and the high pressure that it is desired to generate, it is necessary to use gaskets formed from high-performance and high-cost materials, such as graphite gaskets.
- When this sealing gasket has to be replaced after its deterioration, the head has to be dismantled and the plant shut down with a substantial increase in overall process management costs.
- In order to remedy the above-mentioned drawbacks, the present invention relates to a sealing apparatus of the type described above, characterised in that it comprises an auxiliary cover, which can be associated in a leak-tight manner with the inlet of the high-pressure container, in a position interposed between the container and the head, this cover being provided with an opening in which the piston can slide and coinable sealing means associated with the opening in order to provide a pressurised seal between the piston and the cover in the position in which the moving head hermetically closes the container.
- The moving head in particular comprises coining means adapted to cause the coining by plastic deformation of these sealing means, in its hermetic closure position.
- The invention further relates to a method using the sealing apparatus described above, as set out in the following claims.
- Further characteristic features and advantages of the apparatus and the method are set out in the accompanying claims.
- The characteristic features and advantages of the apparatus and the method of the invention are set out in the following detailed description, made with reference to the accompanying drawings provided purely by way of non-limiting example, in which:
-
FIG. 1 is a partially exploded section through an apparatus of the invention; -
FIG. 2 is a view in section through the apparatus ofFIG. 1 , in the closed configuration; and -
FIG. 3 is a view in section through a detail of the apparatus in relation to the coinable sealing means, the latter being shown before and after coining. - In the attached drawings, a high-pressure and high-temperature container of a type known per se is shown by 2 and internally contains a
volume 4 adapted to contain a material to be pressurised, for instance a mass of salts of low melting point in the liquid state. - The
container 2 has an upper inlet 6 whose contour is associated with atoroidal sealing gasket 8, for instance a copper gasket. - A head moving in the vertical direction F1 is shown by 10, a
piston 12 being mounted to slide in this head. - A
bushing 14, inserted in aseat 16 of the head and fixed therein by means of aclosure plate 18, is used to ensure appropriate sliding of the piston within thehead 10. - An annular flange insert 20 provided with an axial opening in which the piston can slide is associated with a
seat 36 at the lower end of thehead 10, facing thecontainer 2. - The
flange insert 20 is preferably formed by a material having better properties of mechanical and thermal strength than the material forming the head. - An auxiliary
annular cover 22 moving vertically and/or horizontally is shown by 22 and is able to engage the contour of the inlet 6 of thecontainer 2 in a leak-tight manner with the assistance of thegasket 8. - The
auxiliary cover 22 has anaxial opening 24, in which thepiston 12 slides in a leak-tight manner. - The
opening 24 has aseat 26, formed for instance by a widened section of theopening 24, in which an annular sealing gasket, of coinable material, i.e. capable of plastic deformation as a result of the pressure exerted bycoining means 30 associated with thehead 10, can be inserted. - The coining means may in particular be formed by an
annular formation 30 of the flange insert 20, which formation—in the position in which the annular insert is inserted into theseat 22 of thehead 10—projects downwards beyond thelower end surface 32 of the head and can be inserted into thecoinable gasket seat 26. The coinable gasket may be formed by a copper or aluminium rod. - When the method to pressurise the container is actuated, the moving
cover 22 is positioned to bear on the contour of the inlet 6 of thecontainer 2, with asealing gasket 8 which exerts a seal between the surface of the contour of the inlet of the container and thelower surface 34 of the cover. - The
coinable gasket 28 is inserted in theseat 26. This closes thehead 10 on thecover 22, bringing the head into the closed position shown inFIG. 2 . - The lowering of the head into the closed position causes the coining of the
gasket 28 which is plastically deformed and assumes the deformed configuration shown by 28 a inFIG. 3 . - In
FIG. 3 , thegasket 28 and theinsert 20, with the relative coining means 30, are shown in dashed lines in the position immediately preceding the beginning of coining. The position of theinsert 20, after coining, and the gasket in its deformed configuration, shown by 28 a, in which this gasket has assumed the shape of theseat 26, are shown in continuous lines. - In the closed position, the gasket exerts an appropriate seal both in the axial direction of the piston and in the plane at right angles to the axis of the piston. The sliding of the piston within the head is ensured both by the
bushing 14 and by appropriate plays between thepiston 12, the flange insert 20 and thecover 22. - At this point, the method involves the pressurisation of the
volume 4 within thecontainer 2 by means of the descent of the piston and the maintenance of the pressure for the required cycle time. - Once the high-pressure heat treatment has taken place, the subsequent stages include the operation to raise and retract the piston and the movement of the head into the open position.
- The movement of the
auxiliary cover 22 may therefore take place by vertical and/or lateral displacement in order to enable the insertion of a new coinable seal and a further treatment cycle. - The method and the apparatus described above make it possible to obtain substantial advantages in their industrial application.
- In particular, the coined gasket makes it possible to achieve adequate pressure and temperature sealing even at pressures of more than 1000 bar and high temperatures of the order of 450-550° C. or more. The gasket can be particularly rapidly replaced with no need to shut down the pressurisation process. The replacement of the gasket may in particular be masked in the cycle time.
- For this purpose, it will be appreciated that it is possible to use a second
auxiliary cover 22, by removing the coined gasket used in a preceding cycle and positioning a new coinable gasket during the pressing cycle time, in which a first auxiliary cover is used; this characteristic feature is particularly advantageous in hot isostatic pressing processes, in which the treatment cycle time is typically in the range of 15-40 seconds. - Moreover, coinable gasket materials which are of low cost and suitable for recycling, for instance copper or aluminium materials, can be used.
- It will be appreciated that the invention is not limited to the use of these gasket materials, but also includes the use of other materials, provided that they enable conditions in which the piston may slide when coining has taken place.
Claims (11)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000169A ITTO20040169A1 (en) | 2004-03-15 | 2004-03-15 | SEALING SYSTEM FOR HIGH PRESSURE AND HIGH TEMPERATURE CONTAINERS |
ITTO2004A000169 | 2004-03-15 | ||
PCT/EP2005/002487 WO2005090836A1 (en) | 2004-03-15 | 2005-03-09 | Sealing system for high-pressure and high-temperature containers |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080236107A1 true US20080236107A1 (en) | 2008-10-02 |
Family
ID=34961400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/593,077 Abandoned US20080236107A1 (en) | 2004-03-15 | 2005-03-09 | Sealing System for High-Pressure and Temperature Containers |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080236107A1 (en) |
EP (1) | EP1730427B1 (en) |
DE (1) | DE602005009155D1 (en) |
IT (1) | ITTO20040169A1 (en) |
MX (1) | MXPA06010626A (en) |
RU (1) | RU2006136380A (en) |
WO (1) | WO2005090836A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2496047A (en) * | 2011-10-26 | 2013-05-01 | Smith International | High pressure press container |
CN108825784A (en) * | 2018-08-08 | 2018-11-16 | 淮南中泰矿山装备制造有限公司 | Pipe jacking tunnelling machine main shaft waterproof construction |
US10161525B2 (en) * | 2014-07-17 | 2018-12-25 | Dionex Softron Gmbh | Sealing system and method for the production thereof |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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GB0414054D0 (en) | 2004-06-23 | 2004-07-28 | Owen Mumford Ltd | Improvements relating to automatic injection devices |
CN103316403B (en) | 2006-06-30 | 2017-05-24 | 艾伯维生物技术有限公司 | Automatic injection device |
KR101721906B1 (en) | 2009-04-29 | 2017-03-31 | 애브비 바이오테크놀로지 리미티드 | Automatic injection device |
BR112012026886B1 (en) | 2010-04-21 | 2020-11-24 | Abbvie Biotechnology Ltd. | wearable automatic injection device for controlled delivery of therapeutic agents |
AU2012210170B2 (en) | 2011-01-24 | 2016-09-29 | Elcam Medical Agricultural Cooperative Association Ltd. | Injector |
EP2667918B1 (en) | 2011-01-24 | 2017-03-01 | AbbVie Biotechnology Ltd | Automatic injection devices having overmolded gripping surfaces |
MY155753A (en) | 2011-01-24 | 2015-11-30 | Abbvie Biotechnology Ltd | Removal of needle shields from syringes and automatic injection devices |
CN110978609A (en) * | 2019-11-14 | 2020-04-10 | 盐城市纳迩机械科技有限公司 | Combined demolding mold |
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US2625414A (en) * | 1948-12-18 | 1953-01-13 | Du Pont | Sealing element for pressure vessels |
US3427011A (en) * | 1967-11-09 | 1969-02-11 | Battelle Development Corp | High pressure furnace |
US3635616A (en) * | 1969-09-18 | 1972-01-18 | Western Electric Co | Pressure vessel |
US3956452A (en) * | 1973-08-16 | 1976-05-11 | Shinagawa Firebrick, Co., Ltd. | Dry-type isostatic pressing method involving minimization of breaks or cracks in the molded bodies |
US4094672A (en) * | 1975-12-22 | 1978-06-13 | Crucible Inc. | Method and container for hot isostatic compacting |
US4390186A (en) * | 1982-02-04 | 1983-06-28 | Combustion Engineering, Inc. | Metal-to-metal ribbed seal |
US4471949A (en) * | 1982-04-13 | 1984-09-18 | Kabushiki Kaisha Kobe Seiko Sho | Hot isostatic pressing system |
US4484881A (en) * | 1981-10-05 | 1984-11-27 | Kabushiki Kaisha Kobe Seiko Sho | Hot isostatic pressing apparatus |
US4582681A (en) * | 1981-10-24 | 1986-04-15 | Kabushiki Kaisha Kobe Seiko Sho | Method and apparatus for hot isostatic pressing |
US4708627A (en) * | 1984-07-13 | 1987-11-24 | Kabushiki Kaisha Kobe Seiko Sho | High pressure apparatus |
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US6524409B2 (en) * | 2000-02-14 | 2003-02-25 | Teksid Aluminum S.P.A. | Method for hot isostatic pressing and heat treatment of light alloy castings |
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GB161558A (en) * | 1920-04-08 | 1921-08-04 | Morris Brown Brewster | Improvements in packing for piston rods |
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-
2004
- 2004-03-15 IT IT000169A patent/ITTO20040169A1/en unknown
-
2005
- 2005-03-09 DE DE602005009155T patent/DE602005009155D1/en active Active
- 2005-03-09 MX MXPA06010626A patent/MXPA06010626A/en not_active Application Discontinuation
- 2005-03-09 EP EP05715876A patent/EP1730427B1/en not_active Expired - Fee Related
- 2005-03-09 WO PCT/EP2005/002487 patent/WO2005090836A1/en active IP Right Grant
- 2005-03-09 RU RU2006136380/06A patent/RU2006136380A/en not_active Application Discontinuation
- 2005-03-09 US US10/593,077 patent/US20080236107A1/en not_active Abandoned
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US2625414A (en) * | 1948-12-18 | 1953-01-13 | Du Pont | Sealing element for pressure vessels |
US3427011A (en) * | 1967-11-09 | 1969-02-11 | Battelle Development Corp | High pressure furnace |
US3635616A (en) * | 1969-09-18 | 1972-01-18 | Western Electric Co | Pressure vessel |
US3956452A (en) * | 1973-08-16 | 1976-05-11 | Shinagawa Firebrick, Co., Ltd. | Dry-type isostatic pressing method involving minimization of breaks or cracks in the molded bodies |
US4094672A (en) * | 1975-12-22 | 1978-06-13 | Crucible Inc. | Method and container for hot isostatic compacting |
US4484881A (en) * | 1981-10-05 | 1984-11-27 | Kabushiki Kaisha Kobe Seiko Sho | Hot isostatic pressing apparatus |
US4582681A (en) * | 1981-10-24 | 1986-04-15 | Kabushiki Kaisha Kobe Seiko Sho | Method and apparatus for hot isostatic pressing |
US4390186A (en) * | 1982-02-04 | 1983-06-28 | Combustion Engineering, Inc. | Metal-to-metal ribbed seal |
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US4708627A (en) * | 1984-07-13 | 1987-11-24 | Kabushiki Kaisha Kobe Seiko Sho | High pressure apparatus |
US4772450A (en) * | 1984-07-25 | 1988-09-20 | Trw Inc. | Methods of forming powdered metal articles |
US4931241A (en) * | 1987-08-06 | 1990-06-05 | Ltv Aerospace And Defense Company | Method for producing structures by isostatic compression |
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US5348070A (en) * | 1992-03-10 | 1994-09-20 | Georg Fischer Ag | Process for the compression of molding sand for casting molds |
US5340419A (en) * | 1992-12-21 | 1994-08-23 | Metal Casting Technology, Inc. | Method and apparatus for densifying an article |
US6491882B1 (en) * | 1998-05-27 | 2002-12-10 | Ato B.V. | High-pressure device |
US6524409B2 (en) * | 2000-02-14 | 2003-02-25 | Teksid Aluminum S.P.A. | Method for hot isostatic pressing and heat treatment of light alloy castings |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2496047A (en) * | 2011-10-26 | 2013-05-01 | Smith International | High pressure press container |
CN104114268A (en) * | 2011-10-26 | 2014-10-22 | 史密斯国际有限公司 | Construction and composition of preformed containers used in a high-pressure press |
GB2496047B (en) * | 2011-10-26 | 2015-07-15 | Smith International | Construction and composition of preformed containers used in a high-pressure press |
US9457533B2 (en) | 2011-10-26 | 2016-10-04 | Smith International, Inc. | Construction and composition of preformed containers used in a high-pressure press |
US10543653B2 (en) | 2011-10-26 | 2020-01-28 | Smith International Inc. | Construction and composition of preformed containers used in a high-pressure press |
US10161525B2 (en) * | 2014-07-17 | 2018-12-25 | Dionex Softron Gmbh | Sealing system and method for the production thereof |
CN108825784A (en) * | 2018-08-08 | 2018-11-16 | 淮南中泰矿山装备制造有限公司 | Pipe jacking tunnelling machine main shaft waterproof construction |
Also Published As
Publication number | Publication date |
---|---|
EP1730427A1 (en) | 2006-12-13 |
ITTO20040169A1 (en) | 2004-06-15 |
RU2006136380A (en) | 2008-04-27 |
DE602005009155D1 (en) | 2008-10-02 |
EP1730427B1 (en) | 2008-08-20 |
MXPA06010626A (en) | 2007-03-26 |
WO2005090836A1 (en) | 2005-09-29 |
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