EP1527833A1 - Verfahren zur Herstellung eines Verbundgussteils sowie Verbundgussteil - Google Patents
Verfahren zur Herstellung eines Verbundgussteils sowie Verbundgussteil Download PDFInfo
- Publication number
- EP1527833A1 EP1527833A1 EP04020965A EP04020965A EP1527833A1 EP 1527833 A1 EP1527833 A1 EP 1527833A1 EP 04020965 A EP04020965 A EP 04020965A EP 04020965 A EP04020965 A EP 04020965A EP 1527833 A1 EP1527833 A1 EP 1527833A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plastic layer
- casting
- composite
- composite casting
- further step
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0081—Casting in, on, or around objects which form part of the product pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
Definitions
- the invention relates to a method for producing a composite casting, wherein an initial part made in a first step in a another step is associated with a casting material and a Composite casting comprising a product prepared in a first step Output part and at least one in a further step with this connected casting area.
- the output part can in the next step with a cast material can be completely or partially poured or poured, as well only one (regional) sprue take place.
- a cast material can be completely or partially poured or poured, as well only one (regional) sprue take place.
- the casting materials it can metals with common impurities or alloys, in particular also light metals or light metal alloys, such as Aluminum or magnesium, act.
- the production can be done with usual Casting processes such as die casting, chill casting, lost foam casting, sand casting, Continuous casting, thixocasting, Squezzecasting or centrifugal casting done.
- Such composite castings are, for example, in internal combustion engine driven Motor vehicles used as a crankcase.
- the starting part may be cylinder liners made of steel, such as Cast iron, which trade with light metal or a light metal alloy made of aluminum or magnesium.
- cylinder liners made of steel, such as Cast iron, which trade with light metal or a light metal alloy made of aluminum or magnesium.
- hypereutectic aluminum cylinder liners with a infused hypoeutectic aluminum alloy are examples of aluminum cylinder liners with a infused hypoeutectic aluminum alloy.
- DE 44 34 576 A1 relates to a cast Composite cast cylinder or cylinder block of hypoeutectic aluminum-silicon alloy with over-molded liner made of hypereutectic Aluminum-silicon alloy and, for example, proposes the Bushings on the outside by means of grooves, grooves, ribs or waves roughen to the necessary fixed connection of the encircling too guarantee.
- the invention is therefore based on the object, a particularly good Connection of cast material to an output part at the same time very to ensure little effort. For example, at a Internal combustion engine should be a delay of the cylinder or the crankcase effectively avoided, the structural properties of the cast materials should remain unique.
- Claim 1 is a coating of the output part at least in Composite area covered with a plastic layer as well as with a A composite casting according to claim 9, which is one having a plastic layer having provided output part.
- the plastic layer burns in a further step, especially insomniaßgish residue-free, with the combustion only non-toxic substances, such as CO 2 and / or H 2 O are formed. It is particularly advantageous if the plastic layer forms an inert protective gas atmosphere, for example CO 2 , during combustion.
- the plastic layer releases heat during the next step, whereby by a targeted formation of the plastic layer the Heat release is controllable.
- the Heat release is controllable.
- Composite casting viewed in which the output part with a Plastic layer, for example of polyethylene, polystyrene or polyester, is provided, wherein the plastic layer suitably coated, is formed film-, tissue- or coating-like and a thickness of a few microns up to 5 mm, in particular from about 1 to 3 mm.
- a Plastic layer for example of polyethylene, polystyrene or polyester
- the plastic layer suitably coated is formed film-, tissue- or coating-like and a thickness of a few microns up to 5 mm, in particular from about 1 to 3 mm.
- Figure 1 is a die-casting mold 100 for a not shown in detail Crankcase of an internal combustion engine shown.
- this To reduce the weight of the crankcase is called cast material in the present case a light metal alloy, for example an aluminum-silicon alloy or a magnesium alloy.
- Cylinder liners 104 are made of a different material than the Casting exist.
- the cylinder liners 104 are off Gray cast iron or from a hypereutectic aluminum-silicon alloy made, which embedded in the aluminum matrix, evenly comprises trained and distributed silicon primary crystals.
- the cylinder liners 204 are - as shown in Figure 2 - as Pre-fabricated inserts and provided with a plastic layer 206.
- the Plastic layer 206 consists in the present case of polyethylene, styrene or Polyester and is applied to the cylinder liners 204. in the Embodiment, the cylinder liners 204 are only radially provided on the outside with the plastic layer 206, but it is also as considered very useful if the insert is covered on all sides. In particular, then there is a good surface protection of the insert until shedding.
- the plastic layer 206 is foil, tissue, plating or coated like a coating.
- the mold cavity 102 of the pressure casting mold 100 is filled under high pressure with the metallic melt of the encapsulation, burns due to the high temperature of the melt, the plastic layer 206 present non-toxic and residue-free with release of CO 2 and H 2 O.
- the CO 2 forms a protective gas-like atmosphere which prevents oxide film formation of the casting metal during the casting process. Furthermore, heat is released during the combustion of the plastic layer 206 and thus delays the cooling of the melt front, cold running points are prevented.
- plastics may also be used non-toxic and / or not residue-free combustion takes place. It can release substances which in the composite area is a change of the alloy and / or the structure of the insert and / or the encircling cause. Finally, through targeted selection and / or enrichment of the Plastic heat release are particularly controlled.
- Plastic-coated insert according to the invention can be used in conjunction with different casting methods, such as die-casting, chill casting, lost-foam casting, Sand casting, continuous casting, thixocasting, squezzecasting or Centrifugal casting, to be used.
- different casting methods such as die-casting, chill casting, lost-foam casting, Sand casting, continuous casting, thixocasting, squezzecasting or Centrifugal casting, to be used.
- the composite casting produced by the process is characterized in particular by a particularly good connection between Umgussmaterial and insert from, while the production of a very much compared to other connection improvement measures requires little effort.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
- Figur 1
- eine Druckgussform für ein Kurbelgehäuse einer Brennkraftmaschine mit kunststoffbeschichteten Zylinderlaufbuchsen sowie
- Figur 2
- eine kunststoffbeschichtete Zylinderlaufbuchse.
Claims (12)
- Verfahren zur Herstellung eines Verbundgussteils, wobei ein in einem ersten Schritt hergestelltes Ausgangsteil in einem weiteren Schritt mit einem Gusswerkstoff verbunden wird, dadurch gekennzeichnet, dass nach dem ersten und vor dem weiteren Schritt das Ausgangsteil (104, 204) zumindest im Verbundbereich mit einer Kunststoffschicht (206) versehen wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Kunststoffschicht (206) im weiteren Schritt verbrennt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Kunststoffschicht (206) während dem weiteren Schritt rückstandsfrei verbrennt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Kunststoffschicht (206) bei der Verbrennung nur ungiftige Stoffe bildet.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Kunststoffschicht (206) bei der Verbrennung eine Schutzgasatmosphäre bildet.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Kunststoffschicht (206) rückstandsfrei zu CO2 und/oder H2O verbrennt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Kunststoffschicht (206) während dem weiteren Schritt Wärme freisetzt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Wärmefreisetzung durch eine gezielte Ausbildung der Kunststoffschicht (206) gesteuert wird.
- Verbundgussteil umfassend ein in einem ersten Schritt hergestelltes Ausgangsteil sowie wenigstens einen in einem weiteren Schritt mit diesem verbundenen Gussbereich, dadurch gekennzeichnet, dass das Ausgangsteil (204) mit einer Kunststoffschicht (206) versehen ist.
- Verbundgussteil nach Anspruch 9, dadurch gekennzeichnet, dass die Kunststoffschicht (206) aus Polyethylen, Polystyrol oder Polyester gebildet ist.
- Verbundgussteil nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass die Kunststoffschicht (206) überzug-, folien-, gewebe- oder beschichtungsartig ausgebildet ist.
- Verbundgussteil nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass die Kunststoffschicht (206) eine Dicke von wenigen µm bis zu 5 mm, insbesondere von ca. 1 bis 3 mm, aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10350713 | 2003-10-30 | ||
DE2003150713 DE10350713A1 (de) | 2003-10-30 | 2003-10-30 | Verfahren zur Herstellung eines Verbundgussteils sowie Verbundgussteil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1527833A1 true EP1527833A1 (de) | 2005-05-04 |
EP1527833B1 EP1527833B1 (de) | 2010-02-24 |
Family
ID=34399614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040020965 Expired - Fee Related EP1527833B1 (de) | 2003-10-30 | 2004-09-03 | Verfahren zur Herstellung eines Verbundgussteils sowie Verbundgussteil |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1527833B1 (de) |
DE (2) | DE10350713A1 (de) |
ES (1) | ES2338786T3 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005047435A1 (de) * | 2005-09-30 | 2007-04-05 | Ks Aluminium-Technologie Ag | Verfahren zur Herstellung eines Zylinderkurbelgehäuses aus übereutektischer Aluminium-Silizium-Legierung im Rheocast/Thixocast-Verfahren |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5179994A (en) * | 1992-01-16 | 1993-01-19 | Cmi International, Inc. | Method of eliminating porosity defects within aluminum cylinder blocks having cast-in-place metallurgically bonded cylinder liners |
DE4434576A1 (de) | 1994-08-09 | 1996-02-15 | Ks Aluminium Technologie Ag | Verbundgußzylinder oder -zylinderblock |
DE19745725A1 (de) | 1997-06-24 | 1999-01-07 | Ks Aluminium Technologie Ag | Verfahren zum Herstellen eines Verbundgussteils |
DE19859098C1 (de) * | 1998-12-21 | 2000-03-02 | Wolfgang Eberlein | Zylinderlaufbuchse aus Grauguß zum Eingießen in einen aus Leichtmetallguß bestehenden Motorblock eines Verbrennungsmotors |
DE10153306A1 (de) * | 2001-10-31 | 2003-05-15 | Daimler Chrysler Ag | Verfahren zum Eingießen eines Einlegeteils |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE400746C (de) * | 1923-06-03 | 1924-08-19 | Willibald Raym Dipl Ing | Verfahren zum Eingiessen von Wellen |
US2975084A (en) * | 1953-03-23 | 1961-03-14 | Chrysler Corp | Flux composition for aluminum casting process and methods for controlling molten flux baths |
DE19504949C1 (de) * | 1995-02-15 | 1996-08-22 | Ifu Engineering Und Consulting | Verfahren zur Herstellung eines Verbundgußteiles in einer Gießform |
DE10017391A1 (de) * | 2000-04-07 | 2001-10-11 | Volkswagen Ag | Verfahren zur Herstellung von metallischen Dauerformen und Dauerform |
-
2003
- 2003-10-30 DE DE2003150713 patent/DE10350713A1/de not_active Ceased
-
2004
- 2004-09-03 ES ES04020965T patent/ES2338786T3/es active Active
- 2004-09-03 EP EP20040020965 patent/EP1527833B1/de not_active Expired - Fee Related
- 2004-09-03 DE DE200450010802 patent/DE502004010802D1/de active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5179994A (en) * | 1992-01-16 | 1993-01-19 | Cmi International, Inc. | Method of eliminating porosity defects within aluminum cylinder blocks having cast-in-place metallurgically bonded cylinder liners |
DE4434576A1 (de) | 1994-08-09 | 1996-02-15 | Ks Aluminium Technologie Ag | Verbundgußzylinder oder -zylinderblock |
DE19745725A1 (de) | 1997-06-24 | 1999-01-07 | Ks Aluminium Technologie Ag | Verfahren zum Herstellen eines Verbundgussteils |
DE19859098C1 (de) * | 1998-12-21 | 2000-03-02 | Wolfgang Eberlein | Zylinderlaufbuchse aus Grauguß zum Eingießen in einen aus Leichtmetallguß bestehenden Motorblock eines Verbrennungsmotors |
DE10153306A1 (de) * | 2001-10-31 | 2003-05-15 | Daimler Chrysler Ag | Verfahren zum Eingießen eines Einlegeteils |
Also Published As
Publication number | Publication date |
---|---|
EP1527833B1 (de) | 2010-02-24 |
DE10350713A1 (de) | 2005-06-02 |
ES2338786T3 (es) | 2010-05-12 |
DE502004010802D1 (de) | 2010-04-08 |
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