EP0413885B1 - Niederdruck-Kokillen-Giessverfahren zum Giessen von Metallgussteilen - Google Patents
Niederdruck-Kokillen-Giessverfahren zum Giessen von Metallgussteilen Download PDFInfo
- Publication number
- EP0413885B1 EP0413885B1 EP90101401A EP90101401A EP0413885B1 EP 0413885 B1 EP0413885 B1 EP 0413885B1 EP 90101401 A EP90101401 A EP 90101401A EP 90101401 A EP90101401 A EP 90101401A EP 0413885 B1 EP0413885 B1 EP 0413885B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- mould
- mold
- sprue
- cast
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
Definitions
- the invention relates to a low-pressure mold casting process for casting metal castings, such as cylinder heads or engine blocks of internal combustion engines or the like, which castings in some areas have predominantly thinner walls than in their other areas, in which process by means of gas pressure through liquid metal from a melting tank a riser pipe is pressed into a mold.
- the mold is introduced from below and a smooth metal flow is given in the mold of rising metal, the casting speed being adaptable in each phase to the desired mold filling.
- the casting molds are created in the known low-pressure casting process so that the thickest wall parts of the casting in the vicinity of the sprue, the thin-walled areas away from it.
- the invention has for its object to avoid these disadvantages of the known low-pressure mold casting process.
- This is achieved according to the invention in that, in this casting process, the mold is arranged in such a way that its mold cavities, which form the predominantly thicker wall of the casting, are close to the gate and their mold cavities, which form the predominantly thinner wall, are close to the gate, the liquid metal lying on or near the gate Area of the mold is introduced into the mold cavities forming the thinner wall.
- the mold cavities remote from the gate will be at the top and the mold cavities near the gate will be at the bottom.
- the metal fed in is cooled in these mold areas when it rises within the mold, so that it is at relatively low temperatures in the molds above it.
- the thicker wall of the casting forming larger mold cavities comes without running the risk that any mold cavities can not be filled sufficiently.
- the heating of the thinner mold cross sections through which the entire metal volume flows prevents premature freezing of the mold cavities close to the gate.
- the liquid metal is expediently introduced via a bottom run at several sprue points to the region of the mold close to the gate into the mold cavities forming the thinner wall of the cast part.
- the mold cavities close to the gate are heated by the flowing metal to such an extent that, despite the small cross-sections, they are prevented from freezing for a relatively long time and, at least in some areas, the mold can be replenished during a holding pressure phase.
- this entry cross section will generally be solidified in front of the distant regions of the casting.
- the low-pressure casting furnace is not rigidly coupled to a casting mold, but rather operates several casting molds in a cyclical alternation. The faster the inlet cross section of the casting mold solidifies, the sooner the riser pipe of the low-pressure furnace can be uncoupled from the casting mold and connected to another casting mold for the next casting cycle.
- the mold 1 shown in cross section in FIG. 1 is used to cast a cylinder head which has a thicker wall on its one combustion chamber-delimiting side and in its adjoining area than on its opposite side and in the adjoining area.
- the combustion chamber of this cylinder head is limited by the thicker walls which are formed or surrounded in the mold by the upper, obliquely extending, wider mold cavities 5 in FIG. 1.
- This mold is connected with several sprue points 2 via a bottom run 3 to the end 4 of a riser pipe of a low-pressure mold casting machine, not shown, in such a way that its mold cavities 5 forming the thicker wall of the cylinder head are at the top and their mold cavities 6 forming the thinner wall of the cylinder head are at the bottom .
- the molten cast metal is first introduced into the lower, mostly smaller or slimmer mold cavities 6 via the bottom run 3. Through these mold cavities 6, the introduced metal rises essentially turbulence-free and calmly in the mold upwards into the upper mostly larger or thicker mold cavities 5 and into the feeder 7 placed on the mold, which serves to make up the upper one Mold cavities 5 can be useful.
- the make-up of the lower mold cavities 6 takes place via the riser pipe and the bottom run from the sprue side.
- the mold 11 shown in cross section in FIG. 2 is used to cast a cylinder block which generally has a thinner wall on its side delimiting the crankshaft space 18 and in its adjoining areas than in the areas above it.
- This mold is also connected with several sprue points 12 via a bottom run 13 to the end 14 of a riser pipe of a low-pressure mold casting machine, not shown, in such a way that its mold cavities 15 forming the thicker wall of the cylinder block are at the top and their mold cavities forming the thinner wall of the cylinder block 16 are below.
- the molten casting metal is first introduced into the bottom, mostly smaller or slimmer mold cavities 16 via the bottom run 13, through which mold cavities the metal is essentially turbulence-free and quiet in the mold upwards into the upper, mostly larger mold cavities 5 and into the mounted on the mold feeder 17.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Casting Devices For Molds (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Continuous Casting (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Glass Compositions (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90101401T ATE88932T1 (de) | 1989-07-26 | 1990-01-24 | Niederdruck-kokillen-giessverfahren zum giessen von metallgussteilen. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3924742 | 1989-07-26 | ||
DE3924742A DE3924742A1 (de) | 1989-07-26 | 1989-07-26 | Niederdruck-kokillen-giessverfahren zum giessen von metallgussteilen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0413885A1 EP0413885A1 (de) | 1991-02-27 |
EP0413885B1 true EP0413885B1 (de) | 1993-05-05 |
Family
ID=6385893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90101401A Expired - Lifetime EP0413885B1 (de) | 1989-07-26 | 1990-01-24 | Niederdruck-Kokillen-Giessverfahren zum Giessen von Metallgussteilen |
Country Status (15)
Country | Link |
---|---|
US (1) | US5381851A (es) |
EP (1) | EP0413885B1 (es) |
JP (1) | JPH04506935A (es) |
KR (1) | KR920700810A (es) |
AT (1) | ATE88932T1 (es) |
AU (1) | AU6073990A (es) |
BR (1) | BR9007555A (es) |
CA (1) | CA2053867A1 (es) |
DD (1) | DD295570A5 (es) |
DE (2) | DE3924742A1 (es) |
DK (1) | DK0413885T3 (es) |
ES (1) | ES2040512T3 (es) |
PT (1) | PT94822A (es) |
TR (1) | TR24596A (es) |
WO (1) | WO1991001832A1 (es) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR9007687A (pt) * | 1989-09-27 | 1992-07-21 | Univ Sydney | Processo para preparar um composto,processo para converter acido quinghao em quinghaosu e um desidroqinchaosu,processo para preparar desoxoqinghaosu e desidroqinghaosu e qinghaosu |
FR2684029B1 (fr) * | 1991-11-27 | 1994-03-04 | Creusot Loire Industrie | Plaque support perfectionnee d'une demi-coquille de masselotte de moule de coulee sous pression. |
DE19520118C2 (de) * | 1995-06-01 | 1999-02-11 | Porsche Ag | Niederdruckgußvorrichtung, insbesondere zum Herstellen von einteiligen Rädern uund Felgensternen mit Hohlspeichen für Kraftfahrzeuge |
DE19803866A1 (de) * | 1998-01-31 | 1999-08-05 | Volkswagen Ag | Gießform und Verfahren zum Herstellen von Gußstücken |
KR20020044028A (ko) * | 2000-12-05 | 2002-06-14 | 이계안 | 차량용 엔진의 실린더 헤드 저압 주조금형 |
US6615899B1 (en) * | 2002-07-12 | 2003-09-09 | Honeywell International Inc. | Method of casting a metal article having a thinwall |
US6857462B2 (en) * | 2002-11-25 | 2005-02-22 | Honda Giken Kogyo Kabushiki Kaisha | High pressure die cast process |
JP5567331B2 (ja) * | 2006-04-19 | 2014-08-06 | ホーメット コーポレーション | 連続鋳型充填方法、鋳型アセンブリおよび鋳造物 |
US20090065170A1 (en) * | 2007-09-11 | 2009-03-12 | Honda Motor Co., Ltd. | Die cooling apparatus and method thereof |
DE102011056985A1 (de) * | 2011-12-23 | 2013-06-27 | Martinrea Honsel Germany Gmbh | Gießvorrichtung zum Gießen von Zylinderkurbelgehäusen nach dem Niederdruckverfahren |
NO2756167T3 (es) * | 2014-01-29 | 2018-06-16 | ||
US9352384B2 (en) | 2014-05-27 | 2016-05-31 | Honda Motor Co., Ltd. | Cylinder head casting apparatus and methods |
DE102014217438A1 (de) * | 2014-09-01 | 2016-03-03 | Volkswagen Aktiengesellschaft | Gießform für das Schwerkraftgießen oder Niederdruckgießen von Leichtmetallen und damit ausführbares Kokillengießverfahren |
DE102017100805A1 (de) | 2017-01-17 | 2018-07-19 | Nemak, S.A.B. De C.V. | Gießform zum Gießen von komplex geformten Gussteilen und Verwendung einer solchen Gießform |
DE102018211053A1 (de) * | 2018-07-04 | 2020-01-09 | Volkswagen Aktiengesellschaft | Druckgießform und Druckgießverfahren zur Herstellung eines mit einem hohlzylindrischen Bereich ausgebildeten Druckgussbauteils |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB524677A (en) * | 1939-06-17 | 1940-08-12 | Birmingham Aluminium Casting | Improved apparatus for casting metal articles |
US2794224A (en) * | 1953-06-08 | 1957-06-04 | Griffin Wheel Co | Method of cooling cast metal preferentially |
FR2059966A1 (es) * | 1969-08-06 | 1971-06-11 | Peugeot & Renault | |
JPS5647262A (en) * | 1979-09-25 | 1981-04-28 | Komatsu Ltd | Back pressure casting method |
JPS5911383B2 (ja) * | 1980-09-27 | 1984-03-15 | 橋場鉄工株式会社 | タイヤ成形加硫用金型の低圧鋳造用鋳型 |
DE3247129A1 (de) * | 1982-12-20 | 1984-06-20 | Institut po Metalosnanie i Technologia na Metalite, Sofija | Giessform |
FR2559407B1 (fr) * | 1984-02-15 | 1986-09-05 | Pont A Mousson | Procede de moulage en fonderie et moule pour la coulee de precision sous basse pression, avec modele gazeifiable et moule en sable sans liant |
CH662962A5 (en) * | 1984-06-09 | 1987-11-13 | Inst Po Metalloznanie I Tekno | Casting mould for upward casting |
JPH0783926B2 (ja) * | 1987-01-23 | 1995-09-13 | マツダ株式会社 | 鋳造方法 |
US4875518A (en) * | 1987-08-21 | 1989-10-24 | Honda Giken Kogyo Kabushiki Kaisha | Method of and apparatus for low-pressure casting of light metal alloy |
JPH02241655A (ja) * | 1989-03-13 | 1990-09-26 | Honda Motor Co Ltd | 中空鋳物の鋳造方法および装置 |
-
1989
- 1989-07-26 DE DE3924742A patent/DE3924742A1/de not_active Withdrawn
-
1990
- 1990-01-24 EP EP90101401A patent/EP0413885B1/de not_active Expired - Lifetime
- 1990-01-24 ES ES199090101401T patent/ES2040512T3/es not_active Expired - Lifetime
- 1990-01-24 DE DE9090101401T patent/DE59001352D1/de not_active Expired - Fee Related
- 1990-01-24 AT AT90101401T patent/ATE88932T1/de not_active IP Right Cessation
- 1990-01-24 DK DK90101401.9T patent/DK0413885T3/da active
- 1990-07-25 CA CA002053867A patent/CA2053867A1/en not_active Abandoned
- 1990-07-25 KR KR1019910701563A patent/KR920700810A/ko not_active Application Discontinuation
- 1990-07-25 AU AU60739/90A patent/AU6073990A/en not_active Abandoned
- 1990-07-25 DD DD90343059A patent/DD295570A5/xx not_active IP Right Cessation
- 1990-07-25 BR BR909007555A patent/BR9007555A/pt unknown
- 1990-07-25 JP JP2510685A patent/JPH04506935A/ja active Pending
- 1990-07-25 US US07/768,748 patent/US5381851A/en not_active Expired - Fee Related
- 1990-07-25 WO PCT/EP1990/001222 patent/WO1991001832A1/de active Application Filing
- 1990-07-26 TR TR90/0721A patent/TR24596A/xx unknown
- 1990-07-26 PT PT94822A patent/PT94822A/pt not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DD295570A5 (de) | 1991-11-07 |
TR24596A (tr) | 1992-01-01 |
PT94822A (pt) | 1991-03-20 |
US5381851A (en) | 1995-01-17 |
ATE88932T1 (de) | 1993-05-15 |
AU6073990A (en) | 1991-03-11 |
KR920700810A (ko) | 1992-08-10 |
JPH04506935A (ja) | 1992-12-03 |
DK0413885T3 (da) | 1993-06-01 |
ES2040512T3 (es) | 1993-10-16 |
EP0413885A1 (de) | 1991-02-27 |
BR9007555A (pt) | 1992-06-23 |
CA2053867A1 (en) | 1991-01-27 |
DE59001352D1 (de) | 1993-06-09 |
DE3924742A1 (de) | 1991-01-31 |
WO1991001832A1 (de) | 1991-02-21 |
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