EP0060349A2 - Masselotte pour pièces coulées - Google Patents

Masselotte pour pièces coulées Download PDF

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Publication number
EP0060349A2
EP0060349A2 EP81110682A EP81110682A EP0060349A2 EP 0060349 A2 EP0060349 A2 EP 0060349A2 EP 81110682 A EP81110682 A EP 81110682A EP 81110682 A EP81110682 A EP 81110682A EP 0060349 A2 EP0060349 A2 EP 0060349A2
Authority
EP
European Patent Office
Prior art keywords
feeder
exothermic heating
float
casting
volume
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
Application number
EP81110682A
Other languages
German (de)
English (en)
Other versions
EP0060349A3 (en
EP0060349B1 (fr
Inventor
Manfred Scherer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Rexroth AG
Original Assignee
Mannesmann Rexroth AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mannesmann Rexroth AG filed Critical Mannesmann Rexroth AG
Priority to AT81110682T priority Critical patent/ATE19972T1/de
Publication of EP0060349A2 publication Critical patent/EP0060349A2/fr
Publication of EP0060349A3 publication Critical patent/EP0060349A3/de
Application granted granted Critical
Publication of EP0060349B1 publication Critical patent/EP0060349B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the invention relates to a feeder according to the preamble of claim 1.
  • the body is made of exothermic heating mass in the form of a hood, as a result of which, due to the suction of cast material during the solidification process of the casting. Cavity forms in the feeder and the sinking metal mirror moves away from the base of the hood. As a result, the cast material located in the feeder is heated up less and less during the solidification process (DE-PS 20 10 337).
  • the present invention is intended to avoid the application of sprinkling agents.
  • This object is achieved according to the invention by the features in the characterizing part of claim 1.
  • the float which is designed as a compact body, can be inserted into the feeder before the casting mold is filled with casting material. It is raised by the cast material rising in the feeder and sinks with the level of the cast material during its solidification process. The cast material in the feeder is therefore covered by the float from the start, which means that both the rising of the cast material in the feeder and its sinking prevent heat losses and the cast material in the feeder is heated. As a result, the exothermic mass of the feeder is better utilized than with conventional feeders.
  • a casting 1 is molded into a sand mold 2.
  • a hollow cylindrical body 3 made of exothermic heating mass is placed on the sand mold 2, which is surrounded by a heat-insulating cover 4 made of asbestos paper and has a conical shape on its underside.
  • the feeder volume 5 has the shape of an elongated cylinder and corresponds to the suction requirement of the casting 1 plus a small safety amount forming a residual feeder 6.
  • the gate area between the casting 1 and the residual feeder is designated 7.
  • annular shoulder 8 within the body 3, which serves to support a float 9 ', which also consists of exothermic heating mass.
  • the amount of the exothermic heating mass of the body 3 and the float 9 is chosen so that the The cast material present in the feeder remains liquid until the sucking through the casting has ended.
  • the float 9 is adapted to the cross section of the feeder volume 5 in such a way that it can rise and fall within the body 3 with the level of the cast material. If poured material is poured into the empty sand mold 2, poured material also enters the body 3 at the end of the filling process and thereby lifts the float 9. During the subsequent suction process, the level of the cast material in the body 3 drops, the float 9 following it. This always remains in contact with the rising and falling metal level and heats up the cast material underneath.
  • the cross section of the feeder volume 5 can be circular, rectangular, square, ring-shaped or the like.
  • the hollow cylinder-like body 3 can be covered, in particular closed, by a cover made of the same material, in particular plate-shaped or disc-shaped, inserted therein.
  • the float 9 can be provided on its underside with a downward protrusion, in particular a spigot, made of the same material, which protrudes into the cast material in the feeder during the casting process and at the end into the remaining feeder 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
EP81110682A 1981-03-18 1981-12-22 Masselotte pour pièces coulées Expired EP0060349B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81110682T ATE19972T1 (de) 1981-03-18 1981-12-22 Speiser fuer gussstuecke.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3110534 1981-03-18
DE3110534A DE3110534C2 (de) 1981-03-18 1981-03-18 Speisermodell für Gußstücke

Publications (3)

Publication Number Publication Date
EP0060349A2 true EP0060349A2 (fr) 1982-09-22
EP0060349A3 EP0060349A3 (en) 1984-07-25
EP0060349B1 EP0060349B1 (fr) 1986-05-28

Family

ID=6127626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110682A Expired EP0060349B1 (fr) 1981-03-18 1981-12-22 Masselotte pour pièces coulées

Country Status (3)

Country Link
EP (1) EP0060349B1 (fr)
AT (1) ATE19972T1 (fr)
DE (1) DE3110534C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0202741A2 (fr) * 1985-05-17 1986-11-26 Foseco International Limited Coulée de métal liquide et masselottes tubulaires utilisées dans celle-ci
US4749022A (en) * 1986-11-28 1988-06-07 Marie-Therese Simian Foundry gating system
US4907640A (en) * 1986-11-28 1990-03-13 Marie-Therese Simian Foundry gating system
CN110153376A (zh) * 2019-06-18 2019-08-23 莒南县友园机械有限公司 一种新型发热冒口
CN112935191A (zh) * 2021-01-28 2021-06-11 共享装备股份有限公司 一种出气冒口

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439450A (en) * 1943-04-14 1948-04-13 Campbell Phillip Casting apparatus compensating for shrinkage of the cast material
US2845667A (en) * 1954-07-22 1958-08-05 Sulzer Ag Molds for casting disc-shaped bodies
FR1351085A (fr) * 1963-03-12 1964-01-31 Moule de fonderie
DE2010337B1 (de) * 1970-03-05 1971-11-25 Rexroth Gmbh G L Exothermer Speiser für Gussstücke

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4861331A (fr) * 1971-12-04 1973-08-28

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439450A (en) * 1943-04-14 1948-04-13 Campbell Phillip Casting apparatus compensating for shrinkage of the cast material
US2845667A (en) * 1954-07-22 1958-08-05 Sulzer Ag Molds for casting disc-shaped bodies
FR1351085A (fr) * 1963-03-12 1964-01-31 Moule de fonderie
DE2010337B1 (de) * 1970-03-05 1971-11-25 Rexroth Gmbh G L Exothermer Speiser für Gussstücke

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0202741A2 (fr) * 1985-05-17 1986-11-26 Foseco International Limited Coulée de métal liquide et masselottes tubulaires utilisées dans celle-ci
EP0202741A3 (en) * 1985-05-17 1987-07-01 Foseco International Limited Molten metal casting and feeder sleeves for use therein
US4749022A (en) * 1986-11-28 1988-06-07 Marie-Therese Simian Foundry gating system
US4907640A (en) * 1986-11-28 1990-03-13 Marie-Therese Simian Foundry gating system
CN110153376A (zh) * 2019-06-18 2019-08-23 莒南县友园机械有限公司 一种新型发热冒口
CN112935191A (zh) * 2021-01-28 2021-06-11 共享装备股份有限公司 一种出气冒口
CN112935191B (zh) * 2021-01-28 2023-03-03 共享装备股份有限公司 一种出气冒口

Also Published As

Publication number Publication date
ATE19972T1 (de) 1986-06-15
DE3110534C2 (de) 1986-04-17
EP0060349A3 (en) 1984-07-25
EP0060349B1 (fr) 1986-05-28
DE3110534A1 (de) 1982-10-28

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