EP2625430A1 - Method for producing a turbocharger housing - Google Patents
Method for producing a turbocharger housingInfo
- Publication number
- EP2625430A1 EP2625430A1 EP11760789.5A EP11760789A EP2625430A1 EP 2625430 A1 EP2625430 A1 EP 2625430A1 EP 11760789 A EP11760789 A EP 11760789A EP 2625430 A1 EP2625430 A1 EP 2625430A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- core element
- core
- housing
- molding
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000005266 casting Methods 0.000 claims abstract description 51
- 238000000465 moulding Methods 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 2
- 241001168730 Simo Species 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 11
- 238000001816 cooling Methods 0.000 description 5
- 239000003110 molding sand Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/12—Accessories
- B22C21/14—Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/21—Manufacture essentially without removing material by casting
Definitions
- the invention relates to a method for producing a housing, in particular a housing of a turbocharger, and a housing, which is produced according to the method. It is known from the prior art turbocharger housing in
- the object of the present invention is to provide an improved method for producing a housing, in particular a turbocharger housing or a part of the turbocharger housing. This object is achieved by a method for manufacturing a case having the features of claim 1 and Pa ⁇ tent products 2 or claim. 3
- the invention provides a method for producing a casting, in particular a housing of a turbocharger, wherein at least one molding for forming the casting each having a parting plane which is arranged at a predetermined angle to the longitudinal axis of the casting and wherein at least one core element is provided.
- the method has the advantage that the molded part can be imaged in a mold half of a mold box and the core element can be inserted in one mold half.
- a casting can be produced with a higher accuracy, since the molding is not divided into two mold parts along its longitudinal axis, which are respectively molded in the two mold halves of a mold box and then form the casting by assembling in the mold box.
- the shape of the casting may, for example, be formed wholly or substantially entirely in one mold half of the mold box while in the other
- Form half for example, essentially only the feeders are arranged.
- a method for producing a cast part wherein at least one molded part and at least one first core element are provided, wherein the first core element forms at least part of the outer surface of the cast part.
- the method has the advantage that the outer surface can be produced with more complicated structures or shapes, since the core element can be mechanically destroyed by shaking, for example following the casting, or the binder of the molding sand of the core element is destroyed by the heat during casting, so that the core element disintegrates by itself.
- a method for producing a casting is provided, wherein at least one molding and at least two core elements are provided, wherein the two core elements are storable one inside the other and can be positioned to a mold half of a molding box.
- the method has the advantage that this produces a casting with a higher precision.
- the manufacturing tolerances can be reduced to, for example, process-safe +/- 0.5mm.
- the casting is a housing of a turbocharger, for example a bearing housing or an impeller housing or a part of such a housing.
- the first core element is a water jacket core element.
- a second core element is provided.
- the first and second core element can be stored one inside the other and positioned, for example, to a mold half of a mold box. This has the advantage that a casting with a higher position can be produced.
- the molding has a dividing plane on which is arranged at a predetermined angle to the longitudinal axis of the casting, wherein ⁇ play, at an angle substantially of 90 °, and wherein the shaped part, for example, in a mold half of a mold ⁇ box is shapable.
- a core member may have a plane of division at least likewise disposed in a readied ⁇ voted angle to the longitudinal axis of the cast part, for example at an angle substantially of 90 °.
- the second core element is, for example, an oil core element. This has the advantage that in the housing of the turbocharger an oil inlet and outlet can be integrated, for the supply of bearings with lubricant.
- At least one core element or both core elements form part of the outer geometry or outer surface of the casting. This has the advantage that the outer surface can be equipped with more complicated structures or shapes. can be formed, since the e election core element is destroyed for removal from the casting.
- the structure of the molded part and of the core element or of the core elements is substantially completely or almost completely imaged in a mold half of a molding box. This makes it possible to produce a cast part with a higher precision, moreover, there are no unsightly burrs in the area of the dividing plane between the upper and lower mold halves.
- Bin ⁇ DEMITTEL In another invention from the respective core element of molding sand and a suitable Bin ⁇ DEMITTEL is guiding shape to produce, so it can be destroyed to remove easily again.
- one or more core elements can also be used made of other materials, for example materials which either evaporate, melt or otherwise decompose (eg polystyrene), or they are melted out before casting (eg wax, synthetic resins).
- Fig. 1 is a sectional view of a molding box with a
- Fig. 2 is a sectional view of a molding box with a
- Fig. 3 is a sectional view of a molding box with a
- FIG. 4 is an exploded view of a blank, and a water jacket core and an oil chamber core to form a bearing housing of a turbocharger according to the invention.
- a view of a lower box side of a form ⁇ box, the blank and the water jacket core and oil chamber core are shown in Fig. 3 in an assembled state;
- Fig. 6 is a view of a corresponding upper box side of the molding box.
- a molding box 10 for producing a pipe part of a cast material.
- the molding box 10 is shown greatly simplified. For the sake of clarity, the representation of feeders for feeding the liquid cast material was dispensed with. Furthermore, no draft was drawn.
- the pipe part or the impression 12 of the pipe part in the molding box 10 is divided in the longitudinal direction. That means a
- a corresponding cylindrical core element 18 made of molding sand is hereby inserted into the lower box 16, as shown in FIG.
- the core element 18 is mechanically destroyed following casting, after cooling of the casting, for example by shaking, so as to remove it from the finished casting again.
- Fig. 2 an embodiment for the arrangement of a blank or its molding (model body) and its core elements 18 in a mold box 10 according to the invention is now shown.
- the blank or its molding is not longitudinally divided, instead, the blank or its molding (model body) is molded in the lower box 16, as indicated by the imprint 12 of the molding in Fig. 2.
- the shape can be divided horizontally or divided in a plane perpendicular to the longitudinal axis 22 of the blank.
- a molded part of the blank can be molded in the lower boxes 16 and a molded part of the blank also in the upper box 14, as indicated in Fig. 2 with a dashed line.
- two corresponding core elements 18 are used to form the cavities of the casting.
- the liquid casting material is introduced.
- FIG. 2 The illustration in FIG. 2 is greatly simplified and purely schematic.
- the shape of the core elements 18 and the imprint 12 of the blank or its molding (model body) are shown greatly simplified and merely exemplary.
- no draft, etc. Darge ⁇ represents.
- the ge in Fig. 2 ⁇ showed wall portions 26, 28 of the blank so designed that they are connected to each other, but this is not shown in Fig. 2.
- the simplified representation in FIG. 2 serves only to explain an example of the arrangement of a Shaped part and corresponding core elements 18. The invention is not limited to this example.
- the first core member 18 forms a first cavity of the later casting.
- the second core member 18 further formed a second cavity of the later casting.
- the outer wall 30 of the later cast part is formed in the lower box 16 by the impression 12 of the molded part (model body).
- FIG. 3 an embodiment for the arrangement of a blank or its molding (model body) and its core elements 18 is shown in a molding box 10 according to another example of the invention.
- Form box 10 is formed and then removed the blank or molding again. Thereafter, for example, one or more core elements 18 in the footprint 12 of the mold part can be arranged at ⁇ or selectively positioned.
- the first core element 18 is designed so that it can be used in the impression 12 of the blank or its molding to form the outer wall 30 of the subsequent casting.
- first core element 18 forms the outer wall 30 of the later casting
- second core element 18 forms the cavity of the later casting and its inner wall.
- the second core element 18 is used accordingly, for example, in the first core element 18.
- the embodiment in Fig. 2 the embodiment in Fig. 3 is shown schematically and greatly simplified.
- FIG. 4 an exploded view of a further embodiment of the invention is shown in FIG.
- core elements 38, 40 are shown as core elements 18 for forming a bearing housing of a turbocharger.
- This is a blank or its molding 20 (model body) (Fig. 4) is provided, which in the present example (Fig. 4) with a Oil drain 36 and the water connection holes (from subsequent water jacket core element 38) is formed.
- a water jacket core element 38 and an oil chamber core element 40 are provided, for forming a water jacket around the bearing housing in order to be able to additionally cool it during operation later.
- the oil chamber core member 40 is provided to supply a lubricant to the bearings of the bearing housing later.
- the blank or its molding 20 (model body) is not divided in the longitudinal direction or along its longitudinal axis.
- the new concept according to the invention is based on a compact mold design.
- the water jacket core element 38 and the oil chamber core element 40 each form a partial contour of the outer geometry of the housing.
- the respective dividing plane of the molded part 20, the water jacket core element 38 and the oil chamber core element 40 of the bearing housing to be produced do not extend as in the prior art in the longitudinal direction or along the longitudinal axis 42, as shown in an example in FIG. 1, but the graduation planes run, for example substantially perpendicular to the longitudinal axis 42 of the hither ⁇ alternate ends of the housing.
- the division plane 44 of the oil chamber core element 40 is indicated by hatching in FIG. 4 by way of example.
- at least one dividing plane can also be inclined at an angle greater or smaller than 90 ° relative to the longitudinal axis 42, depending on the function and intended use.
- the blank or its molding (model body) is first molded in the mold box to form a corresponding impression 12 and then removed again.
- the impression 12 of the blank or molding (model body) for example, one or more core elements 18 can optionally be used or positioned.
- the two core elements 18, ie, the water jacket core element 38 and the Olraumkernelement 40 are, for example, in ⁇ each other (see also Fig. 6) and positioned to the lower box form or here to the imprint 12 of the molding (model ⁇ body) in the lower box shape.
- the lower box shape has been omitted here for the sake of clarity.
- the Olraumkernelement 40 is stored in the water jacket core member 38 and positioned to the lower box mold (not shown) and the impression 12 of the molding 20 and the blank in the lower box mold.
- This allows a massive tolerance narrowing to, for example, process-safe +/- 0.5mm to the reference surface. Due to this higher precision of the arrangement described can be given a larger space due to the small tolerance window for the wall thickness between two core elements 18, 38, 40 and between an inner contour and an outer contour Cross-sectional area are allowed in the water channel.
- This larger cross-section causes improved heat dissipation and also allows the process-reliable removal of cast iron residues in the water channel and oil chamber of smaller
- Turbocharger housings such as those used in motor vehicles, by the better accessibility.
- Fig. 6 is a perspective view from the direction
- a turbine housing or compressor housing can for example also be formed with a water jacket, for cooling.
- elements of the casting it is also possible here for elements of the casting to be produced to provide a dividing plane in the longitudinal direction, as shown by way of example in FIG.
- the core elements 18, 38, 40 may for example be made of a sand with a suitable binder, as previously described with reference to the prior art in Fig. 1 , However, other materials or materials may also be used. alkombinations for producing core elements 18, 38, 40 are used.
- a turbocharger housing may be provided with or without one or more cooling jackets.
- a casting material for the bearing housing for example, a cast steel and cast iron alloy, and their modifications, such as D5, Simo, 1.4848, 1.4849, etc. are provided.
- these are merely examples of materials from which the housing can be made. The invention is not limited to these materials.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Supercharger (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010047952A DE102010047952A1 (en) | 2010-10-08 | 2010-10-08 | Method for producing a housing, in particular a housing of a turbocharger |
PCT/EP2011/066738 WO2012045609A1 (en) | 2010-10-08 | 2011-09-27 | Method for producing a turbocharger housing |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2625430A1 true EP2625430A1 (en) | 2013-08-14 |
EP2625430B1 EP2625430B1 (en) | 2018-12-12 |
Family
ID=44675599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11760789.5A Active EP2625430B1 (en) | 2010-10-08 | 2011-09-27 | Method of manufacturing a turbocharger casing |
Country Status (5)
Country | Link |
---|---|
US (1) | US9889501B2 (en) |
EP (1) | EP2625430B1 (en) |
CN (1) | CN103124853B (en) |
DE (1) | DE102010047952A1 (en) |
WO (1) | WO2012045609A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013230485A (en) * | 2012-04-27 | 2013-11-14 | Taiho Kogyo Co Ltd | Method for manufacturing turbocharger bearing housing, and turbocharger bearing housing |
CN103394650B (en) * | 2013-08-16 | 2016-01-20 | 溧阳市万盛铸造有限公司 | Casting method of turbofan |
CN104368760B (en) * | 2013-11-05 | 2016-05-18 | 新兴重工湖北三六一一机械有限公司 | A kind of casting method of step aluminium alloy oil sump and special casting mould thereof |
GB201409976D0 (en) * | 2014-06-05 | 2014-07-16 | Cummins Ltd | Method of manufacturing a compressor housing |
CN106180652B (en) * | 2016-09-09 | 2019-02-15 | 西京学院 | A kind of titanium alloy thin wall shell slab fine machining die and its processing method |
CN106424582A (en) * | 2016-10-28 | 2017-02-22 | 江苏华培动力科技有限公司 | Molding process for sand cores used for casting turbocharger shells |
DE102017106775A1 (en) * | 2017-03-29 | 2018-10-04 | Nemak, S.A.B. De C.V. | Casting core and process for its production |
CN110653345B (en) * | 2018-06-29 | 2024-05-31 | 丹佛斯(天津)有限公司 | Sand core assembly and method for forming sand core assembly through 3D printing |
CN110918939B (en) * | 2019-11-28 | 2021-06-04 | 阿路米(无锡)有限公司 | Forming die and forming method for aluminum alloy product with suspension ribs |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2142889A (en) * | 1938-06-18 | 1939-01-03 | Eaton Mfg Co | Method of making valve tappets and like objects |
US3302250A (en) * | 1963-12-18 | 1967-02-07 | Gen Motors Corp | Core box and molding assembly for internal combustion engine blocks |
US4136648A (en) * | 1976-12-22 | 1979-01-30 | Ford Motor Company | Low weight reciprocating engine |
DE4118403C2 (en) * | 1991-06-05 | 1999-09-23 | Deutz Ag | casing |
JPH062675A (en) * | 1992-06-18 | 1994-01-11 | Toshiba Corp | Fluid compressor |
GB9405440D0 (en) | 1994-03-19 | 1994-05-04 | Schwitzer Europ Ltd | Turbochargers |
JP3429853B2 (en) | 1994-05-12 | 2003-07-28 | 旭テック株式会社 | Mold manufacturing method |
DE4442453A1 (en) * | 1994-11-29 | 1996-05-30 | Bayerische Motoren Werke Ag | Method of casting a components from light weight alloys |
JP4234904B2 (en) | 1997-11-03 | 2009-03-04 | シーメンス アクチエンゲゼルシヤフト | Turbine casing and manufacturing method thereof |
JP4596537B2 (en) | 2005-07-25 | 2010-12-08 | 株式会社日立メタルプレシジョン | Exhaust system turbine housing manufacturing method and exhaust system turbine housing using the same |
KR101346078B1 (en) * | 2005-08-05 | 2013-12-31 | 가부시키가이샤 기타가와 뎃꼬쇼 | Work holding device of holding turbocharger housing |
GB0614392D0 (en) * | 2006-07-20 | 2006-08-30 | Cummins Turbo Tech Ltd | Turbine Housing for a turbocharger |
US8118556B2 (en) | 2007-01-31 | 2012-02-21 | Caterpillar Inc. | Compressor wheel for a turbocharger system |
DE102007031448A1 (en) | 2007-07-05 | 2009-01-15 | Fritz Winter Eisengiesserei Gmbh & Co. Kg | Method for producing moldings for casting molds, casting mold and method for casting a molten metal |
DE102008048761B4 (en) * | 2008-09-24 | 2019-03-28 | Volkswagen Ag | Method for casting a cast body, in particular cylinder crankcase, and casting device for carrying out the method |
-
2010
- 2010-10-08 DE DE102010047952A patent/DE102010047952A1/en not_active Withdrawn
-
2011
- 2011-09-27 CN CN201180048723.3A patent/CN103124853B/en active Active
- 2011-09-27 WO PCT/EP2011/066738 patent/WO2012045609A1/en active Application Filing
- 2011-09-27 US US13/878,265 patent/US9889501B2/en active Active
- 2011-09-27 EP EP11760789.5A patent/EP2625430B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20130272857A1 (en) | 2013-10-17 |
DE102010047952A1 (en) | 2012-04-12 |
CN103124853A (en) | 2013-05-29 |
CN103124853B (en) | 2016-09-14 |
WO2012045609A1 (en) | 2012-04-12 |
EP2625430B1 (en) | 2018-12-12 |
US9889501B2 (en) | 2018-02-13 |
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