EP2450127B1 - Appareil decoulée sous pression à haute température et son procédé - Google Patents
Appareil decoulée sous pression à haute température et son procédé Download PDFInfo
- Publication number
- EP2450127B1 EP2450127B1 EP11187817.9A EP11187817A EP2450127B1 EP 2450127 B1 EP2450127 B1 EP 2450127B1 EP 11187817 A EP11187817 A EP 11187817A EP 2450127 B1 EP2450127 B1 EP 2450127B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- die casting
- die
- high temperature
- barrier coating
- 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.)
- Not-in-force
Links
- 238000004512 die casting Methods 0.000 title claims description 50
- 238000000034 method Methods 0.000 title claims description 9
- 239000000463 material Substances 0.000 claims description 28
- 230000004888 barrier function Effects 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 10
- 239000003870 refractory metal Substances 0.000 claims description 5
- QIJNJJZPYXGIQM-UHFFFAOYSA-N 1lambda4,2lambda4-dimolybdacyclopropa-1,2,3-triene Chemical compound [Mo]=C=[Mo] QIJNJJZPYXGIQM-UHFFFAOYSA-N 0.000 claims description 3
- 229910039444 MoC Inorganic materials 0.000 claims description 3
- 229910052702 rhenium Inorganic materials 0.000 claims description 3
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical group [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 16
- 238000002844 melting Methods 0.000 description 16
- 230000008018 melting Effects 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 238000005266 casting Methods 0.000 description 8
- 229910052759 nickel Inorganic materials 0.000 description 7
- 229910000601 superalloy Inorganic materials 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 229910000990 Ni alloy Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical group [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical group [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910017150 AlTi Inorganic materials 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2209—Selection of die materials
Definitions
- This disclosure relates to die casting and, more specifically, a die casting system that has the ability to operate at high temperatures.
- die casting is a process that includes moving molten metal into a die cavity to form a desired shape.
- the process typically includes transporting the molten metal into the die cavity, holding the metal in the cavity for a period of time until the casting solidifies, removing the casting from the die cavity, and trimming the casting to remove any scrap.
- a die casting system having the features of the preamble of claim 1 is disclosed in DE 10 2007 046410 A1 .
- the invention provides a high temperature die casting system as set forth in claim 1.
- the invention provides a method for a high temperature die casting system as set forth in claim 2.
- Figure 1 illustrates a die casting system 10 including a reusable die 12 having a plurality of die elements 14, 16 that function to cast a component 15.
- the component 15 could include aeronautical components, such as a gas turbine engine blade or vane, or non-aeronautical components.
- two die elements 14, 16 are depicted by Figure 1 , it should be understood that the die 12 could include more or fewer die elements, as well as other parts and other configurations.
- the die 12 is assembled by positioning the die elements 14, 16 together and holding the die elements 14, 16 at a desired position via a mechanism 18.
- the mechanism 18 could include a clamping mechanism of appropriate hydraulic, pneumatic, electromechanical, and/or other configurations.
- the mechanism 18 also separates the die elements 14, 16 subsequent to casting.
- the die elements 14, 16 include internal surfaces that cooperate to define a die cavity 20.
- the die elements 14, 16 may additionally include one or more heating elements 17 for heating and maintaining the die cavity 20 at a desired temperature above 500°F (260°C).
- the heating elements may heat the die elements 14, 16 up to 500°F (260°C) during initial start-up of the die elements 14, 16, maintain the desired temperature during operation of the die elements 14, 16, and maintain the desired temperature during thermal cycling as components are produced in the die casting system 10.
- the heating elements 17 may be resistance heaters, induction heaters, a recirculating thermal medium, such as, but not limited to hot oil, or combinations of different kinds of heaters that are operable to heat the die cavity 20 to the desired temperature and then maintain that temperature (e.g., via non-application of heat or in combination with a cooling element).
- a recirculating thermal medium such as, but not limited to hot oil
- Traditional casting dies are not commonly equipped to specifically heat the cavity and may be present in the system for the purpose of removing excess heat from the die.
- the elevated temperature of die elements 14, 16 serves to reduce the temperature differential between the die elements and the molten die casting material to reduce heat checking.
- a shot tube 24 is in fluid communication with the die cavity 20 via one or more ports 26 that extend into the die element 14, the die element 16 or both.
- a shot tube plunger 28 is received within the shot tube 24 and is moveable between a retracted and injected position (in the direction of arrow A) within the shot tube 24 by a mechanism 30.
- a shaft 31 extends between the mechanism 30 and the shot tube plunger 28.
- the mechanism 30 could include a hydraulic assembly or other suitable system, including, but not limited to, pneumatic, electromechanical, hydraulic or any combination of systems.
- the shot tube 24 is positioned to receive a charge of material from a melting unit 32, such as a crucible, for example.
- the melting unit 32 may utilize any known technique for melting an ingot of metallic material to prepare molten metal for delivery to the shot tube 24, such as will be further discussed below.
- the charge of material is melted into molten metal by the melting unit 32 at a location that is separate from the shot tube 24 and the die 12.
- the example melting unit 32 is positioned in relative close proximity to the die casting system 10 to reduce the transfer distance of the charge of material between the melting unit 32 and the die casting system 10.
- Materials used to die cast a component 15 with the die casting system 10 include, but are not limited to, nickel-based super alloys, cobalt-based super alloys, titanium alloys, high temperature aluminum alloys, copper-based alloys, iron alloys, molybdenum, tungsten, niobium or other refractory metals. This disclosure is not limited to the disclosed alloys, and other high melting temperature materials may be utilized to die cast a component 15. As used in this disclosure, the term "high melting temperature material" is intended to include materials having a melting temperature of approximately 1500°F (815°C) and higher.
- the charge of material is transferred from the melting unit 32 to the die casting system 10.
- the charge of material may be poured into a pour hole 33 of the shot tube 24.
- a sufficient amount of molten metal is poured into the shot tube to fill the die cavity 20.
- the shot tube plunger 28 is actuated to inject the charge of material under pressure from the shot tube 24 into the die cavity 20 to cast the component 15.
- the die casting system 10 could be configured to cast multiple components in a single shot.
- the die casting system 10 can be positioned within a vacuum chamber 34 that includes a vacuum source 35.
- a vacuum is applied in the vacuum chamber 34 via the vacuum source 35 to render a vacuum die casting process.
- the vacuum chamber 34 provides a non-reactive environment for the die casting system 10 that reduces reaction, contamination or other conditions that could detrimentally affect the quality of the die cast component, such as gas entrapment or the formation of oxides or nitrides within the die cast component that can occur from exposure to atmospheric gasses.
- the vacuum chamber 34 is maintained at a pressure between 133.3 and 13.3 mPa (between 1x10 -3 Torr and 1x10 -4 Torr), although other pressures are contemplated.
- each of the melting unit 32, the shot tube 24 and the die 12 are positioned within the vacuum chamber 34 during the die casting process such that the melting, injecting and solidifying of the high melting temperature material are all performed under vacuum.
- the chamber 34 is backfilled with an inert gas, such as Argon, for example.
- the example die casting system 10 of Figure 1 is illustrative only and could include more or fewer sections, parts and/or components. This disclosure extends to all forms of die casting, including but not limited to, horizontal, inclined, or vertical die casting systems and other die casting configurations.
- the die casting system 10 utilizes a barrier coating 40 that protects the die casting system 10 from the effects of the high temperature molten die casting material.
- the die casting system 10 includes the barrier coating 40 on at least a portion of the tool surfaces that are exposed for contact with the molten die casting material, to alleviate heat checking or other influences of the high temperature die casting material.
- the components of the die casting system 10 that has a surface that contacts the molten metal is considered to be a die casting tool or component.
- the surfaces of the die cavity 20, shot tube 24, shot tube plunger 28, melting unit 32, pour hole 33, and any runners or gates may include the barrier coating 40.
- Figure 2 illustrates a selected portion of one such area that includes the barrier coating 40 on a substrate 42 of a given die casting tool.
- the barrier coating 40 is deposited directly onto the surface of the substrate 42.
- the substrate 42 may be any suitable material for the given component.
- the substrate 42 may be a superalloy, such as a nickel and/or cobalt alloy. It is to be understood, however, that the material of the substrate 42 is not limited to any particular composition and one of ordinary skill in the art would be able to recognize suitable materials to meet their particular needs.
- the barrier coating 40 forms a thermal barrier between the molten die casting material and the underlying substrate 42.
- the material of the barrier coating 40 has a relatively high thermal resistance.
- the carbide is rhenium carbide or molybdenum carbide.
- Figure 3 illustrates another example component that is similar to the example shown in Figure 2 except that the component additionally includes a bond coat 44 that mitigates any thermal expansion mismatch between the material of the substrate 42 and the material of the barrier coating 40.
- the material of the bond coat 44 may be MCrAlY (where the M comprises at least one of nickel, cobalt, iron, or a combination thereof, Cr is chromium, Al is aluminum, and Y is yttrium), gamma-gamma prime nickel alloy, a nickel-based superalloy, or combinations thereof.
- the gamma-gamma prime nickel alloy may generally have a microstructure comprising nickel metal with phases of Ni3(AlTi) dispersed throughout the nickel metal.
- One example nickel-based superalloy has a nominal composition of 22 wt.% cobalt, 17 wt.% chromium, 12.5 wt.% aluminum, 0.6 wt.% yttrium, 0.4 wt.% silicon, 0.25wt.% hafnium, and a balance of nickel and any impurities.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Coating By Spraying Or Casting (AREA)
Claims (2)
- Système de coulée sous pression à haute température (10), comprenant :un outil de coulée sous pression (12) ayant des matrices (14, 16) conçues pour former un composant et pouvant être utilisées pour chauffer et maintenir la température des matrices (14, 16) au-dessus de 260 °C (500 °F), dans lequel au moins une partie de l'outil de coulée sous pression (12) qui est exposée pour venir en contact avec le matériau de coulée sous pression en fusion comprend un substrat (42) et un revêtement protecteur (40) sur le substrat (42),dans lequel le revêtement protecteur (40) est un carbure de métal réfractaire ; caractérisé en ce que :
le carbure de métal réfractaire est un carbure de rhénium ou un carbure de molybdène. - Procédé pour un système de coulée sous pression à haute température (10), le procédé comprenant :le maintien à une température supérieure à 500 °F/260 °C d'un outil de coulée sous pression (12) ayant des matrices (14, 16) conçues pour former un composant ; etl'utilisation d'un revêtement protecteur (40) en carbure de métal réfractaire sur au moins une partie de l'outil de coulée sous pression (12) qui est exposée pour venir en contact avec le matériau de coulée sous pression en fusion pour protéger un substrat sous-jacent (42) de l'outil de coulée sous pression (12) à partir du matériau de coulée sous pression en fusion ;caractérisé en ce que :
le carbure de métal réfractaire est un carbure de rhénium ou un carbure de molybdène.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/940,362 US20120111525A1 (en) | 2010-11-05 | 2010-11-05 | High temperature die casting apparatus and method therefor |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2450127A2 EP2450127A2 (fr) | 2012-05-09 |
EP2450127A3 EP2450127A3 (fr) | 2016-07-13 |
EP2450127B1 true EP2450127B1 (fr) | 2019-10-09 |
Family
ID=45023608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11187817.9A Not-in-force EP2450127B1 (fr) | 2010-11-05 | 2011-11-04 | Appareil decoulée sous pression à haute température et son procédé |
Country Status (3)
Country | Link |
---|---|
US (1) | US20120111525A1 (fr) |
EP (1) | EP2450127B1 (fr) |
SG (1) | SG180159A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102527982B (zh) * | 2011-12-15 | 2015-05-13 | 比亚迪股份有限公司 | 非晶合金压铸设备及非晶合金压铸工艺 |
US20170356304A1 (en) * | 2016-06-13 | 2017-12-14 | General Electric Company | Systems and methods for reducing fluid viscosity in a gas turbine engine |
US10682691B2 (en) * | 2017-05-30 | 2020-06-16 | Raytheon Technologies Corporation | Oxidation resistant shot sleeve for high temperature die casting and method of making |
CN110684979B (zh) * | 2019-11-01 | 2022-06-21 | 江苏锋泰工具有限公司 | 一种冷喷涂制备硬质合金涂层的方法 |
US20220290289A1 (en) * | 2021-03-10 | 2022-09-15 | Vapor Technologies, Inc. | Pvd coatings for aluminum die casting molds |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2621122A (en) * | 1946-10-09 | 1952-12-09 | Rolls Royce | Alloy for heat and corrosion resisting coating |
GB8503876D0 (en) * | 1985-02-15 | 1985-03-20 | Ontario Research Foundation | Chemical vapour deposition of titanium borides |
US20020005233A1 (en) * | 1998-12-23 | 2002-01-17 | John J. Schirra | Die cast nickel base superalloy articles |
AUPP939099A0 (en) * | 1999-03-23 | 1999-04-15 | Cast Centre Pty Ltd | Die coatings for gravity and low pressure diecasting |
US6470550B1 (en) * | 1999-11-11 | 2002-10-29 | Shear Tool, Inc. | Methods of making tooling to be used in high temperature casting and molding |
US6786272B2 (en) * | 2000-11-30 | 2004-09-07 | Copper Development Association, Inc. | Apparatus and method for die casting |
US6702886B2 (en) * | 2001-11-20 | 2004-03-09 | Alcoa Inc. | Mold coating |
US6730422B2 (en) * | 2002-08-21 | 2004-05-04 | United Technologies Corporation | Thermal barrier coatings with low thermal conductivity |
US6986381B2 (en) * | 2003-07-23 | 2006-01-17 | Santoku America, Inc. | Castings of metallic alloys with improved surface quality, structural integrity and mechanical properties fabricated in refractory metals and refractory metal carbides coated graphite molds under vacuum |
DE102007046410A1 (de) * | 2007-09-24 | 2009-04-02 | Volkswagen Ag | Gießereiwerkzeug und Verfahren zur Herstellung eines solchen Werkzeuges sowie dessen Verwendung |
US8418744B2 (en) * | 2009-03-24 | 2013-04-16 | Nonferrous Materials Technology Development Centre | Molten metal casting die |
-
2010
- 2010-11-05 US US12/940,362 patent/US20120111525A1/en not_active Abandoned
-
2011
- 2011-11-04 SG SG2011081510A patent/SG180159A1/en unknown
- 2011-11-04 EP EP11187817.9A patent/EP2450127B1/fr not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
EP2450127A2 (fr) | 2012-05-09 |
SG180159A1 (en) | 2012-05-30 |
US20120111525A1 (en) | 2012-05-10 |
EP2450127A3 (fr) | 2016-07-13 |
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