EP0073441A1 - Moule permanent, en particulier coquille métallique - Google Patents
Moule permanent, en particulier coquille métallique Download PDFInfo
- Publication number
- EP0073441A1 EP0073441A1 EP82107688A EP82107688A EP0073441A1 EP 0073441 A1 EP0073441 A1 EP 0073441A1 EP 82107688 A EP82107688 A EP 82107688A EP 82107688 A EP82107688 A EP 82107688A EP 0073441 A1 EP0073441 A1 EP 0073441A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mold
- permanent
- cavity
- feeder
- casting
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
-
- 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
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
Definitions
- the present invention relates to a permanent mold, in particular a metallic mold which has at least one opening for receiving a feeder insert, and to the use of the permanent mold to connect the feeder insert to the casting.
- the seal feed of the castings made of metals and alloys, which have a volume deficit during solidification, must be ensured by the feeder.
- the feeders must be the last, i.e. solidify only after the casting has solidified in order to ensure the sealing feed. For this reason, so-called lost heads are used in steel molds, or in steel casting, among other things. Feeder used.
- cover plates which contain feeder inserts can be used, as described in DE-PS 26 22 891. These cover plates form the upper part of the mold during casting. After the casting process is complete, before the casting is full is constantly solidified, these cover plates are removed from the mold with the casting. This frees the mold for the next casting process before the casting solidifies.
- the figure shows a cross section through a permanent mold, in particular a metallic mold.
- a feeder insert 2 is inserted into an opening provided in the upper part of the mold.
- a crushing core 4 is arranged between the feeder insert 2 and the mold interior 5.
- a cavity 3 between the feeder insert 2 and the surrounding mold wall la is provided by a recess in the mold wall la. This recess is open towards the mold interior 5 and serves to receive the liquid metal penetrating from the mold interior 5.
- Cavities in the upper mold part or groove-like passages between the crusher core and the feeder insert or in the crusher core serve to fill the cavity 3 with the liquid metal.
- the condition for unpacking the casting before the feeders solidify is that they have a firm connection to the casting. This arises from controlled spring formation, ie a thin sleeve made of cast material is formed around the feeder insert 2.
- the required gap size is determined by the fluidity of the potted material and can be between 0.5 and 10 mm, preferably between 0.5 and 5 mm.
- Another criterion is the easy removal of the bushing without the risk of breaking into the casting by tapping it simultaneously with the feeder. Due to the sleeve made of cast metal surrounding the feeder insert or part of the feeder insert, it is firmly connected to the casting and the outflow is thereby prevented.
- the adaptation of the casting speed to the heat transfer between the mold and the casting takes place in such a way that the solidification zone follows the casting zone approximately in the saturation length of the feeder. This allows the volume of the feeder to be kept to a minimum.
- the required feeder module can be determined using the following formula:
- the dwell time of the casting in the mold can be significantly reduced by precisely coordinating the setting times. It makes it easier to unpack the castings by ejecting them instead of lifting them out of the mold.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Pens And Brushes (AREA)
- Pinball Game Machines (AREA)
- Cable Accessories (AREA)
- Processing Of Terminals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT82107688T ATE13393T1 (de) | 1981-08-25 | 1982-08-23 | Dauerform, insbesondere eine metallische kokille. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH546681 | 1981-08-25 | ||
CH5466/81 | 1981-08-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0073441A1 true EP0073441A1 (fr) | 1983-03-09 |
EP0073441B1 EP0073441B1 (fr) | 1985-05-22 |
Family
ID=4294080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82107688A Expired EP0073441B1 (fr) | 1981-08-25 | 1982-08-23 | Moule permanent, en particulier coquille métallique |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0073441B1 (fr) |
JP (1) | JPS5841647A (fr) |
KR (1) | KR840000918A (fr) |
AT (1) | ATE13393T1 (fr) |
AU (1) | AU553844B2 (fr) |
BR (1) | BR8204949A (fr) |
CA (1) | CA1196468A (fr) |
DE (1) | DE3263758D1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0088387A1 (fr) * | 1982-03-09 | 1983-09-14 | Georg Fischer Aktiengesellschaft | Moule permanent pour la coulée de métaux en chute, le moule possédant au moins deux cavités |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61168532A (ja) * | 1984-08-23 | 1986-07-30 | Sakai Chem Ind Co Ltd | 磁気記録用バリウムフェライト微結晶の製造方法 |
GB8512514D0 (en) * | 1985-05-17 | 1985-06-19 | Foseco Int | Molten metal casting & feeder sleeves |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1369947A (en) * | 1920-08-02 | 1921-03-01 | Union Steel Casting Company | Method of making sand molds |
FR869518A (fr) * | 1939-07-14 | 1942-02-04 | Rudolf Rautenbach | Procédé pour la coulée de pièces métalliques moulees |
DE2309016A1 (de) * | 1973-02-23 | 1974-08-29 | Eduard Dr Ing Baur | Verfahren und vorrichtung zur waermeisolation eines trichters an gusstuecken |
-
1982
- 1982-08-23 EP EP82107688A patent/EP0073441B1/fr not_active Expired
- 1982-08-23 AT AT82107688T patent/ATE13393T1/de not_active IP Right Cessation
- 1982-08-23 DE DE8282107688T patent/DE3263758D1/de not_active Expired
- 1982-08-24 KR KR1019820003809A patent/KR840000918A/ko unknown
- 1982-08-24 CA CA000410047A patent/CA1196468A/fr not_active Expired
- 1982-08-24 BR BR8204949A patent/BR8204949A/pt unknown
- 1982-08-25 AU AU87584/82A patent/AU553844B2/en not_active Ceased
- 1982-08-25 JP JP57146295A patent/JPS5841647A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1369947A (en) * | 1920-08-02 | 1921-03-01 | Union Steel Casting Company | Method of making sand molds |
FR869518A (fr) * | 1939-07-14 | 1942-02-04 | Rudolf Rautenbach | Procédé pour la coulée de pièces métalliques moulees |
DE2309016A1 (de) * | 1973-02-23 | 1974-08-29 | Eduard Dr Ing Baur | Verfahren und vorrichtung zur waermeisolation eines trichters an gusstuecken |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0088387A1 (fr) * | 1982-03-09 | 1983-09-14 | Georg Fischer Aktiengesellschaft | Moule permanent pour la coulée de métaux en chute, le moule possédant au moins deux cavités |
Also Published As
Publication number | Publication date |
---|---|
EP0073441B1 (fr) | 1985-05-22 |
ATE13393T1 (de) | 1985-06-15 |
BR8204949A (pt) | 1983-08-02 |
KR840000918A (ko) | 1984-03-26 |
JPS5841647A (ja) | 1983-03-10 |
DE3263758D1 (en) | 1985-06-27 |
AU553844B2 (en) | 1986-07-31 |
AU8758482A (en) | 1983-03-03 |
CA1196468A (fr) | 1985-11-12 |
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Owner name: DE DOMINICIS & MAYER S.R.L. |
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