EP3055088A1 - Giessform und damit hergestellter kolben - Google Patents
Giessform und damit hergestellter kolbenInfo
- Publication number
- EP3055088A1 EP3055088A1 EP14780430.6A EP14780430A EP3055088A1 EP 3055088 A1 EP3055088 A1 EP 3055088A1 EP 14780430 A EP14780430 A EP 14780430A EP 3055088 A1 EP3055088 A1 EP 3055088A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grooves
- casting
- piston
- surface texture
- casting mold
- 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
- 238000005266 casting Methods 0.000 title claims abstract description 46
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 235000012773 waffles Nutrition 0.000 claims description 5
- 239000000463 material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical group Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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
- B22D17/2245—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies having walls provided with means for marking or patterning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0076—Pistons the inside of the pistons being provided with ribs or fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/02—Pistons having means for accommodating or controlling heat expansion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F2003/0007—Monolithic pistons; One piece constructions; Casting of pistons
Definitions
- the present invention relates to a casting mold for casting a piston of an internal combustion engine.
- the invention also relates to a piston cast in such a mold.
- a surface texture known as a waffle pattern has proved favorable in the art, by means of which not only the flowability of the casting material but also the air removal can be improved.
- a disadvantage of the known waffle pattern is that it must be introduced in the pulling direction of the casting mold, since a demolding of the cast piston, which is outside the Waffelmusterausformschrägen, generates an undercut and thereby can lead to damage of the cast piston.
- such surface textures are certainly desirable, not only for improved air removal, but also for indicating the origin of the piston produced with this mold.
- the present invention therefore deals with the problem of specifying a casting mold, which in particular has a significantly increased flexibility with respect to a demolding direction.
- the present invention is based on the general idea to provide a surface texture formed by grooves in a known per se for casting a piston of an internal combustion engine now in the region of a later inner surface of a piston skirt, the demolding of the casting blank to approximately 90 ° to the surface texture, that is parallel to the surface texture.
- the grooves forming the surface texture according to the invention have a depth of 0.2 mm ⁇ t ⁇ 0.5 mm, a width of 0.02 mm ⁇ b ⁇ 0.05 mm and groove walls which are around 0 ° ⁇ ⁇ 10 ° are inclined outwards.
- the cross section of such a groove is thus trapezoidal.
- the grooves of the invention are smaller and also steeper than previous surface texture forming grooves and cause the mold during the casting process can be optimally vented, but the casting metal does not penetrate into the grooves and hooked there undercut.
- the surface texture according to the invention is freely designable, but care must be taken that the individual grooves can be vented.
- the surface texture can be used with or without protective gas and with or without size or with or without continuous coating and also in combination of permanent coating and size. Of particular advantage in the surface texture according to the invention with the grooves described above is that this creates a surface texture with a design that is difficult to imitate, which can serve as a proof of origin.
- the grooves form a quadrilateral structure.
- a quadrilateral structure can be, for example, a rectangular structure or a rhombic structure, which are also referred to in particular as a so-called waffle pattern, and which allow the cast blank to be removed from the casting mold in almost all directions, that is to say almost parallel to the surface.
- the grooves are introduced by means of a laser. The production of such grooves and indirectly also of such surface textures by means of lasers represents a cost-effective and at the same time high-quality production method.
- a coating in particular a size, is applied to the surface texture.
- Such a coating can at least partially narrow the groove at its entrance and thereby make penetration of the casting material more difficult.
- there is no closing of the individual grooves due to the coating so that the air removal can also be ensured with coating, in particular continuous coating or sizing.
- coating in particular continuous coating or sizing.
- each schematically 1 shows a sectional view through a casting mold according to the invention casting a piston with an indicated demolding direction
- a casting mold 1 according to the invention for casting a piston 2 (see FIG. 3) of an internal combustion engine in the region of a later inner surface 3 of a piston skirt has a surface texture 5 formed by grooves 4.
- the grooves 4 have the following dimensions according to the invention: a depth t which lies between 0.2 mm and 0.5 mm (cf. FIG. 2), a width b which is between 0.02 mm and 0.05 mm, and after externally inclined Nutenstroke 6, wherein an inclination of the Nutenrow 6 outwardly between 0 ° ⁇ ⁇ 10 °.
- the casting mold according to the invention no longer has this disadvantage, since in this case the surface texture 5 is designed such that the casting material can not penetrate into the surface texture 5, that is to say in particular not into the grooves 4 and thereby leaves a great deal of freedom with respect to the demolding direction no undercuts are generated. Nevertheless, the grooves 4 according to the invention or the surface texture 5 produced thereby also make it possible to improve the flowability and the air removal during the casting process of the piston 2.
- the grooves 4 form a quadrangular structure, for example a square waffle pattern or even a rhombic structure.
- a distance a is provided according to the figure 2, which is between 0.2 mm and 2.0 mm.
- An introduction of the grooves 4 and thus the surface texture 5 in the mold 1 can be done for example by means of laser, whereby the grooves 4 can be introduced not only extremely accurate, but also relatively inexpensive.
- a special feature of the surface texture 5 makes it possible to create a mark of origin, whereby the piston 2 cast with the casting mold 1 according to the invention is unequivocally and easily attributable to a particular manufacturer.
- the casting mold 1 in the area of the surface texture 5 can also have a coating 8, in particular a size.
- Coating is generally understood to mean coating substances which are applied, for example, to casting molds 1 in order to special to smooth a porous molding surface.
- Such a coating 8 or sizing additionally insulates the substrate and protects it against the thermal stress of the molten metal during the casting of the piston 2.
- the surface texture 5 or the grooves 4 forming these can be introduced, for example, with or without protective gas.
- the grooves 4 according to the invention are smaller and steeper than grooves of previous surface textures, whereby ingress of the melt during the casting process and thereby the formation of undesirable undercuts can at least be reduced, preferably even avoided, but the ventilation required for optimum casting can be reliably ensured ,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL14780430T PL3055088T3 (pl) | 2013-10-08 | 2014-09-23 | Forma odlewnicza i wytwarzany w niej tłok |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013220256.3A DE102013220256A1 (de) | 2013-10-08 | 2013-10-08 | Gießform |
PCT/EP2014/070166 WO2015051991A1 (de) | 2013-10-08 | 2014-09-23 | Giessform und damit hergestellter kolben |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3055088A1 true EP3055088A1 (de) | 2016-08-17 |
EP3055088B1 EP3055088B1 (de) | 2017-08-30 |
Family
ID=51659615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14780430.6A Active EP3055088B1 (de) | 2013-10-08 | 2014-09-23 | Giessform und damit hergestellter kolben |
Country Status (8)
Country | Link |
---|---|
US (1) | US10391552B2 (de) |
EP (1) | EP3055088B1 (de) |
JP (1) | JP6538034B2 (de) |
CN (1) | CN105555434B (de) |
BR (1) | BR112016007400B1 (de) |
DE (1) | DE102013220256A1 (de) |
PL (1) | PL3055088T3 (de) |
WO (1) | WO2015051991A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015219895A1 (de) | 2015-10-14 | 2017-04-20 | Ford Global Technologies, Llc | Direkteinspritzende Brennkraftmaschine mit Kolben und Verfahren zur Herstellung eines Kolbens einer derartigen Brennkraftmaschine |
DE102017206922B3 (de) | 2017-04-25 | 2018-08-23 | Federal-Mogul Nürnberg GmbH | Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor, Kolben, Kolbenrohling sowie Gießform |
CN114458715B (zh) * | 2022-01-14 | 2023-03-24 | 清华大学 | 基于表面织构的磁流变阻尼器 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4928567B1 (de) * | 1968-07-11 | 1974-07-27 | ||
GB1342245A (de) * | 1970-05-14 | 1974-01-03 | Hepworth & Grandage Ltd | |
JPS5232817A (en) | 1975-09-08 | 1977-03-12 | Nippon Steel Corp | Molten substance solidifying mold or vessel having notch in molten substance contact surface |
US4250950A (en) * | 1978-11-03 | 1981-02-17 | Swiss Aluminium Ltd. | Mould with roughened surface for casting metals |
JPS63256251A (ja) | 1987-04-13 | 1988-10-24 | Toyota Motor Corp | ダイカストにおける鋳造欠陥の防止方法 |
IT1250214B (it) * | 1991-11-22 | 1995-04-03 | Rivestimento al nitruro di titanio per conchiglie per pistoni. | |
JP3388945B2 (ja) | 1995-05-23 | 2003-03-24 | 新日本製鐵株式会社 | 連続鋳造用鋳型の作製方法 |
US5857440A (en) * | 1996-06-07 | 1999-01-12 | Melco Engraving, Inc. | Engine piston and method for its manufacture |
JPH10137895A (ja) * | 1996-11-11 | 1998-05-26 | Nissan Motor Co Ltd | 鋳造用金型及び鋳造方法 |
JP3380412B2 (ja) * | 1997-01-07 | 2003-02-24 | 新日本製鐵株式会社 | 溶鋼の連続鋳造用鋳型 |
JP2000282951A (ja) * | 1999-01-29 | 2000-10-10 | Honda Motor Co Ltd | 内燃機関用ピストン |
CN1152189C (zh) * | 2002-02-26 | 2004-06-02 | 刘毅 | 内燃机铝活塞及铸造方法 |
FR2848129B1 (fr) * | 2002-12-05 | 2006-01-27 | Ascometal Sa | Procede de fabrication d'un piston pour moteur a explosion, et piston ainsi obtenu |
WO2004063533A2 (en) * | 2003-01-09 | 2004-07-29 | Surface Technologies Ltd. | Laser surface textured fluid-film bearing |
JP2009243356A (ja) * | 2008-03-31 | 2009-10-22 | Toyota Motor Corp | シリンダライナの製造方法及びシリンダライナ製造用金型 |
DE102008026535A1 (de) * | 2008-06-03 | 2009-12-17 | Itn Nanovation Ag | Verfahren zum Vergießen von Kupfer und kupferhaltigen Legierungen |
WO2010104032A1 (ja) * | 2009-03-11 | 2010-09-16 | 新東工業株式会社 | 鋳造用金型のキャビティ面の加工方法 |
DE102009037283A1 (de) | 2009-08-14 | 2011-02-17 | Kme Germany Ag & Co. Kg | Gießform |
US20110073061A1 (en) | 2009-09-28 | 2011-03-31 | Jeungsuck Chae | Pistons with a rough surface |
EP2723550B1 (de) * | 2011-06-22 | 2017-03-01 | Technische Universität Darmstadt | MITTELS GENERATIVER VERFAHREN HERGESTELLTER GIEßFORMEN |
DE102011082935A1 (de) | 2011-09-19 | 2013-03-21 | Mahle International Gmbh | Gießform eines Kolbens |
US9429202B2 (en) * | 2012-05-02 | 2016-08-30 | Intellectuall Property Holdings LLC | Ceramic preform and method |
CN104338919B (zh) * | 2013-07-25 | 2016-11-23 | 本田技研工业株式会社 | 铸造用模具 |
JP6479420B2 (ja) * | 2014-11-04 | 2019-03-06 | カルソニックカンセイ株式会社 | 樹脂成形品構造および樹脂成形用金型 |
-
2013
- 2013-10-08 DE DE102013220256.3A patent/DE102013220256A1/de not_active Withdrawn
-
2014
- 2014-09-23 US US15/027,979 patent/US10391552B2/en active Active
- 2014-09-23 PL PL14780430T patent/PL3055088T3/pl unknown
- 2014-09-23 CN CN201480051867.8A patent/CN105555434B/zh active Active
- 2014-09-23 JP JP2016521676A patent/JP6538034B2/ja active Active
- 2014-09-23 WO PCT/EP2014/070166 patent/WO2015051991A1/de active Application Filing
- 2014-09-23 BR BR112016007400-9A patent/BR112016007400B1/pt active IP Right Grant
- 2014-09-23 EP EP14780430.6A patent/EP3055088B1/de active Active
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2015051991A1 * |
Also Published As
Publication number | Publication date |
---|---|
BR112016007400B1 (pt) | 2020-12-08 |
BR112016007400A2 (pt) | 2017-08-01 |
WO2015051991A1 (de) | 2015-04-16 |
JP2016535829A (ja) | 2016-11-17 |
PL3055088T3 (pl) | 2018-03-30 |
EP3055088B1 (de) | 2017-08-30 |
US20160236273A1 (en) | 2016-08-18 |
CN105555434A (zh) | 2016-05-04 |
CN105555434B (zh) | 2017-11-14 |
DE102013220256A1 (de) | 2015-04-09 |
US10391552B2 (en) | 2019-08-27 |
JP6538034B2 (ja) | 2019-07-03 |
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