WO2006081983A1 - KÜHLKOKILLE ZUM VERGIEßEN VON LEICHTMETALL-GUSSWERKSTOFFEN UND VERWENDUNG EINER SOLCHEN KOKILLE SOWIE EINES GUSSEISENWERKSTOFFS - Google Patents
KÜHLKOKILLE ZUM VERGIEßEN VON LEICHTMETALL-GUSSWERKSTOFFEN UND VERWENDUNG EINER SOLCHEN KOKILLE SOWIE EINES GUSSEISENWERKSTOFFS Download PDFInfo
- Publication number
- WO2006081983A1 WO2006081983A1 PCT/EP2006/000701 EP2006000701W WO2006081983A1 WO 2006081983 A1 WO2006081983 A1 WO 2006081983A1 EP 2006000701 W EP2006000701 W EP 2006000701W WO 2006081983 A1 WO2006081983 A1 WO 2006081983A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- casting
- light metal
- mold
- cast iron
- thermal expansion
- Prior art date
Links
Classifications
-
- 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
- B22C9/061—Materials which make up the mould
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/002—Castings of light metals
Definitions
- the present invention relates to a cooling mold for casting of light metal casting materials. Likewise, the invention relates to the use of such a mold and the use of a known cast iron material.
- cooling molds in casting molds, in particular sand casting molds, in order to more selectively cool a casting material cast into the casting mold, in particular a light metal casting material, such as an aluminum or a magnesium material, in the contact area between the casting material and the cooling mold than the sand mold is capable of doing (Stephan Hasse, Ernst Brunhuber: "Foundry Lexicon", page 735, 18th edition, 2001). In this way, a directional solidification of the casting material is achieved starting from the regions of the casting material which come into contact with the cooling mold.
- the accelerated cooling achieved by the use of cooling molds can produce an improved, in particular denser, structure of the solidified casting in the region cooled by the cooling mold with regard to its mechanical properties.
- the chill molds are usually used in such sections of the mold, which depict areas of the casting to be produced, on the structural properties of which particularly high demands are made. This applies in particular to the casting technology production of engine blocks or cylinder heads of internal combustion engines made of a light metal alloy.
- a typical example of the range of molds in which cooling molds are used for the local improvement of the structure are the cylinder chambers of internal combustion engines.
- the running surfaces of the cylinder chambers are subject to high loads during operation, so that in particular their wear properties, their toughness or. their strength high demands are made.
- cooling molds are made of cast iron material. They can be produced inexpensively by casting technology in a simple manner. In practice, however, cast iron cooling molds prove to be particularly problematic, especially when casting light metal cast materials, such as aluminum or magnesium melts, because of the lower coefficient of thermal expansion of the cast iron compared to the light metal cast material.
- the cooling mold coming into contact with the light metal melt is heated and expands in accordance with its thermal expansion coefficient. If the temperature drops during the subsequent solidification process, the mold shrinks back into its original volume. If the melt and the molds have different coefficients of thermal expansion, this can lead to stresses or even relative movements in the contact areas between cooling molds and solidified cast material, which causes defects in the finished casting. In particular, it can lead to porosities and comparable other surface defects. Such errors prove particularly problematic where particularly high loads occur during operation of the respective casting.
- chill mold and casting voltages can be so strong that the chill mold can be separated only with relatively great effort from the solidified casting, which turns out to be negative especially in the automated production of light metal castings.
- a disadvantage of the known brass molds is their high price and their unfavorable wear behavior.
- the handling is complex because the brass molds can not be held with magnets, for example. This makes it difficult, especially in automated production, to provide casting molds which are equipped with the brass molds.
- the object of the invention was to provide a cooling mold which can be produced cost-effectively, which has optimized use properties and at the same time enables optimized casting results.
- this object has been achieved in that it consists of a Ni and / or Mn alloyed cast iron material is produced, the Ni and / or Mn content is dimensioned such that the coefficient of thermal expansion of the chill is adapted to the coefficient of thermal expansion of eUils ever cast to light metal casting material.
- a cooling mold according to the invention can preferably be used as part of a sand casting mold for casting a cylinder block made of a light metal casting material.
- the invention uses the possibility of alloying cast iron in such a way that its thermal expansion coefficient corresponds to the thermal expansion coefficient of the molten light metal to be cast in each case.
- alloyed cast iron is already known per se.
- a cast iron material has already been described, which has a thermal expansion coefficient between 16, 0 x 10 ⁇ 6 and 21, 0 x 10 "6 K " 1 at temperatures between 20 0 C and 100 0 C lie. This corresponds for example to the coefficient of thermal expansion of typical aluminum casting alloys in the relevant temperature interval. So far, however, such cast iron materials have been used only for components that are cast or shrunk into light metal elements or. be squeezed with them.
- DE 27 19 456 Al alloy in the production of annular grooves, which are used as sealing elements in light metal pistons for internal combustion engines.
- thermal expansion coefficients of iron for the purposes of the invention. and light metal casting material is preferably the deviation of the coefficient of thermal expansion of eweils used for the chill cast iron material from the coefficient of thermal expansion of the respective light metal casting material to a maximum of ⁇ 0, 4 x 10 "5 / K limited.
- cooling molds according to the invention are particularly suitable for use in the casting of aluminum alloys, since the thermal expansion coefficient of the mold material can be adapted particularly well to that of the aluminum alloys.
- the cooling molds can also be used in the casting of other light metal alloys, such as magnesium alloys.
- Cooling molds according to the invention are preferably suitable for use in sand casting molds for casting a cylinder block from a light metal casting material.
- correspondingly designed cooling molds can serve in particular to image the cylinder cavities of a cast cylinder block for internal combustion engines. This applies regardless of whether the cavities themselves serve as cylinder surfaces or whether additional cylinder liners are provided.
- the cavity inner walls themselves the cylinder surfaces so the cavity inner walls can be coated after the solidification of the casting to increase their wear resistance in a conventional manner with a material such as nickel or silicon.
- a casting material known per se from a hypereutectic, silicon-exiting alloy, wherein the cooling molds according to the invention reliably ensure that it accelerates to the desired precipitations of Si in the region of the cylinder surfaces due to a controlled by means of cooling molds accelerated Solidification comes.
- the cast iron material has a nickel content of 0, 1 to 13, 0 wt. -% exhibit .
- nickel content With such a nickel content, the adaptation of the thermal expansion coefficient can be realized in a particularly simple manner. Higher levels of Ni cause increased expansion of the cast iron when heated, while smaller levels of Ni combined with also low levels of Mn, if present, result in smaller
- Thermal expansion coefficients of the cooling molds according to the invention are obtained when the content of Ni more than 6, 00 wt. -%, in particular at least 6, 5 Gew. -% is.
- the range for the nickel contents, at which the effects used by the invention are particularly safe, can be delimited at the top by the fact that the upper limit of this range is limited to a maximum of 8.00% by weight. -%, preferably less than 8, 00 Gew. -%, is fixed.
- the cast iron material for adjusting the thermal expansion coefficient may also have a manganese content in the range of 0, 1 to 19, 0 wt. -% lies .
- Mn contents lead to a shift in the coefficient of thermal expansion towards higher values, while low Mn contents at low or high non-existing Ni contents cause a lower expansion of the cast iron when heated.
- the contents of Mn are in the range from 4 to 12 wt. -%, to ensure optimum adaptation to the expansion behavior of Al melts.
- the cast iron material may also contain, in a manner known per se, the following elements in addition to iron and unavoidable impurities (in% by weight):
- FIG. 1 shows a completely solidified cylinder block 1 of a multi-cylinder internal combustion engine cast in a manner known per se in a sand casting mold, not shown, in a cross section through one of the cylinder chambers. After solidification and cooling, the sand mold has been removed by destroying the cylinder block 1.
- the cylinder block 1 is made of a conventional AlSil7Cu4Mg alloy (Si: 16, 0-18, 0; Cu: 4, 0-5, 0;
- This casting material has a thermal expansion coefficient of 19, 4 x 10 -6 / K.
- the cooling molds 2 have been produced from a commercial GGL-NiCr 20-2 cast iron alloy known as "Ni-resist".
- the chills have a coefficient of thermal expansion, the x is 10 "-6 / K in the range of 20 0 C to 200 0 C 18,. 7
- This coefficient of thermal expansion is so close to the expansion coefficient of 19, 4 x 10 ⁇ 6 / K of the AlSil7Cu4Mg alloy from which the engine block is cast, the cooling molds behave essentially the same when heated and cooled as the Al casting material, so that at most minimal stresses occur in the contact area between the casting and the respective cooling mold and an optimum casting result is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Dental Prosthetics (AREA)
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT06706440T ATE442924T1 (de) | 2005-01-31 | 2006-01-27 | Kühlkokille zum vergiessen von leichtmetall- gusswerkstoffen und verwendung einer solchen kokille sowie eines gusseisenwerkstoffs |
PL06706440T PL1841554T3 (pl) | 2005-01-31 | 2006-01-27 | Ochładzalnik wewnętrzny do odlewania metali lekkich oraz zastosowanie takiego ochładzalnika i stopu żeliwnego |
MX2007009008A MX2007009008A (es) | 2005-01-31 | 2006-01-27 | Molde permanente para fundir materiales de fundicion de metal ligero y uso del tipo de molde permanente y un material de fundicion. |
EP06706440A EP1841554B1 (de) | 2005-01-31 | 2006-01-27 | Kühlkokille zum vergiessen von leichtmetall-gusswerkstoffen und verwendung einer solchen kokille sowie eines gusseisenwerkstoffs |
US11/815,191 US20080190583A1 (en) | 2005-01-31 | 2006-01-27 | Chill Mould for the Casting of Light Metal Casting Materials, and the Use of Such a Mould, as Well as of a Cast Iron Material |
AU2006210029A AU2006210029B2 (en) | 2005-01-31 | 2006-01-27 | Permanent mould for casting light metal casting materials and use of said type of permanent mould and a casting material |
CA002595833A CA2595833A1 (en) | 2005-01-31 | 2006-01-27 | Permanent mould for casting light metal casting materials and use of said type of permanent mould and a casting material |
JP2007552581A JP2008528292A (ja) | 2005-01-31 | 2006-01-27 | 軽金属鋳造材料を鋳造するためのチル鋳型と、このような鋳型の使用および鋳鉄材料の使用 |
DE502006004855T DE502006004855D1 (de) | 2005-01-31 | 2006-01-27 | Kühlkokille zum vergiessen von leichtmetall-gusswerkstoffen und verwendung einer solchen kokille sowie eines gusseisenwerkstoffs |
BRPI0606754-9A BRPI0606754A2 (pt) | 2005-01-31 | 2006-01-27 | coquilha para fundição de materiais fundidos de metal leve e uso de tal molde, bem como de um material de ferro fundido |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005004481A DE102005004481B3 (de) | 2005-01-31 | 2005-01-31 | Kühlkokille zum Vergießen von Leichtmetall-Gusswerkstoffen und Verwendung einer solchen Kokille sowie eines Gusseisenwerkstoffs |
DE102005004481.6 | 2005-01-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006081983A1 true WO2006081983A1 (de) | 2006-08-10 |
Family
ID=36143452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/000701 WO2006081983A1 (de) | 2005-01-31 | 2006-01-27 | KÜHLKOKILLE ZUM VERGIEßEN VON LEICHTMETALL-GUSSWERKSTOFFEN UND VERWENDUNG EINER SOLCHEN KOKILLE SOWIE EINES GUSSEISENWERKSTOFFS |
Country Status (15)
Country | Link |
---|---|
US (1) | US20080190583A1 (de) |
EP (1) | EP1841554B1 (de) |
JP (1) | JP2008528292A (de) |
CN (1) | CN100513007C (de) |
AT (1) | ATE442924T1 (de) |
AU (1) | AU2006210029B2 (de) |
BR (1) | BRPI0606754A2 (de) |
CA (1) | CA2595833A1 (de) |
DE (2) | DE102005004481B3 (de) |
ES (1) | ES2330965T3 (de) |
MX (1) | MX2007009008A (de) |
PL (1) | PL1841554T3 (de) |
RU (1) | RU2422243C2 (de) |
UA (1) | UA87349C2 (de) |
WO (1) | WO2006081983A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015225588A1 (de) | 2015-12-17 | 2017-06-22 | Volkswagen Aktiengesellschaft | Gießverfahren und Kühleinsatz zur Herstellung eines Gussteiles |
CN107090565A (zh) * | 2017-06-08 | 2017-08-25 | 含山县朝霞铸造有限公司 | 耐高温耐磨铸铁及其铸造方法 |
CN107354373A (zh) * | 2017-06-29 | 2017-11-17 | 太仓市钧胜轧辊有限公司 | 一种用于制备轧辊的高强度铁基合金材料 |
CN107287496A (zh) * | 2017-07-20 | 2017-10-24 | 马鞍山市万鑫铸造有限公司 | 基于奥氏体基体的高强韧球墨铸铁及其制造工艺 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2719456A1 (de) * | 1977-04-30 | 1978-11-02 | Mahle Gmbh | Austenitisches gusseisen |
DE4431713A1 (de) * | 1994-09-06 | 1996-03-07 | Audi Ag | Vorrichtung zum Herstellen von Gußstücken |
US5931213A (en) * | 1995-09-11 | 1999-08-03 | Vaw Alucast Gmbh | Method of casting an engine block of aluminum |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51105921A (ja) * | 1975-03-14 | 1976-09-20 | Mitsubishi Motors Corp | Shirindaburotsukuchuzoho |
DE2627329C2 (de) * | 1976-06-18 | 1981-11-19 | Mahle Gmbh, 7000 Stuttgart | Austenitisches Gußeisen |
JPS5672151A (en) * | 1979-11-17 | 1981-06-16 | Toyo Chuko Kk | Pseudo flaky graphite cast iron for glass molding metal mold |
JPS61252912A (ja) * | 1985-04-30 | 1986-11-10 | Mazda Motor Corp | エンジンのクランクシヤフト軸受構造 |
JPS63153239A (ja) * | 1986-12-17 | 1988-06-25 | Yaskawa Electric Mfg Co Ltd | 回転電機の回転軸 |
CH672604A5 (de) * | 1987-04-22 | 1989-12-15 | Sulzer Ag | |
JP2602838B2 (ja) * | 1987-07-31 | 1997-04-23 | 日立金属株式会社 | 高熱膨張鋳鉄 |
JP2832970B2 (ja) * | 1989-01-18 | 1998-12-09 | 三菱自動車工業株式会社 | シリンダブロックの鋳造方法 |
JPH03134132A (ja) * | 1989-10-19 | 1991-06-07 | Yamaha Motor Co Ltd | 高熱膨張係数を有する鋳鉄材 |
JPH0760399A (ja) * | 1993-08-27 | 1995-03-07 | Toyota Motor Corp | 鋳造用金型構造 |
JP2002283003A (ja) * | 2001-03-22 | 2002-10-02 | Toyota Industries Corp | 鋳造方法および鋳造用金型装置 |
DE10242559A1 (de) * | 2002-09-13 | 2004-03-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Kühlkörper zur Beeinflussung der Abkühlung bei Gussteilen |
-
2005
- 2005-01-31 DE DE102005004481A patent/DE102005004481B3/de not_active Expired - Fee Related
-
2006
- 2006-01-27 AT AT06706440T patent/ATE442924T1/de not_active IP Right Cessation
- 2006-01-27 ES ES06706440T patent/ES2330965T3/es active Active
- 2006-01-27 PL PL06706440T patent/PL1841554T3/pl unknown
- 2006-01-27 CN CNB2006800064064A patent/CN100513007C/zh not_active Expired - Fee Related
- 2006-01-27 EP EP06706440A patent/EP1841554B1/de not_active Not-in-force
- 2006-01-27 CA CA002595833A patent/CA2595833A1/en not_active Abandoned
- 2006-01-27 RU RU2007132745/02A patent/RU2422243C2/ru not_active IP Right Cessation
- 2006-01-27 DE DE502006004855T patent/DE502006004855D1/de active Active
- 2006-01-27 WO PCT/EP2006/000701 patent/WO2006081983A1/de active Application Filing
- 2006-01-27 AU AU2006210029A patent/AU2006210029B2/en not_active Ceased
- 2006-01-27 US US11/815,191 patent/US20080190583A1/en not_active Abandoned
- 2006-01-27 BR BRPI0606754-9A patent/BRPI0606754A2/pt not_active IP Right Cessation
- 2006-01-27 MX MX2007009008A patent/MX2007009008A/es active IP Right Grant
- 2006-01-27 UA UAA200708774A patent/UA87349C2/ru unknown
- 2006-01-27 JP JP2007552581A patent/JP2008528292A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2719456A1 (de) * | 1977-04-30 | 1978-11-02 | Mahle Gmbh | Austenitisches gusseisen |
DE4431713A1 (de) * | 1994-09-06 | 1996-03-07 | Audi Ag | Vorrichtung zum Herstellen von Gußstücken |
US5931213A (en) * | 1995-09-11 | 1999-08-03 | Vaw Alucast Gmbh | Method of casting an engine block of aluminum |
Also Published As
Publication number | Publication date |
---|---|
JP2008528292A (ja) | 2008-07-31 |
DE502006004855D1 (de) | 2009-10-29 |
DE102005004481B3 (de) | 2006-06-14 |
UA87349C2 (ru) | 2009-07-10 |
BRPI0606754A2 (pt) | 2009-07-14 |
AU2006210029B2 (en) | 2010-02-18 |
AU2006210029A1 (en) | 2006-08-10 |
EP1841554A1 (de) | 2007-10-10 |
RU2007132745A (ru) | 2009-03-10 |
CN100513007C (zh) | 2009-07-15 |
PL1841554T3 (pl) | 2010-01-29 |
MX2007009008A (es) | 2007-09-14 |
ES2330965T3 (es) | 2009-12-17 |
RU2422243C2 (ru) | 2011-06-27 |
US20080190583A1 (en) | 2008-08-14 |
CA2595833A1 (en) | 2006-08-10 |
EP1841554B1 (de) | 2009-09-16 |
ATE442924T1 (de) | 2009-10-15 |
CN101128276A (zh) | 2008-02-20 |
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