EP1057558A1 - Prévention de l'oxydation du métal liquide dans une machine de coulée à dépression - Google Patents

Prévention de l'oxydation du métal liquide dans une machine de coulée à dépression Download PDF

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Publication number
EP1057558A1
EP1057558A1 EP00108213A EP00108213A EP1057558A1 EP 1057558 A1 EP1057558 A1 EP 1057558A1 EP 00108213 A EP00108213 A EP 00108213A EP 00108213 A EP00108213 A EP 00108213A EP 1057558 A1 EP1057558 A1 EP 1057558A1
Authority
EP
European Patent Office
Prior art keywords
protective gas
casting
melt
die casting
vacuum die
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
EP00108213A
Other languages
German (de)
English (en)
Other versions
EP1057558B1 (fr
Inventor
Friedrich Georg Dipl.-Ing. Stummer
Wilfried Schwab
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.)
Mueller Weingarten AG
Original Assignee
Mueller Weingarten 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 Mueller Weingarten AG filed Critical Mueller Weingarten AG
Publication of EP1057558A1 publication Critical patent/EP1057558A1/fr
Application granted granted Critical
Publication of EP1057558B1 publication Critical patent/EP1057558B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/30—Accessories for supplying molten metal, e.g. in rations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/14—Machines with evacuated die cavity
    • 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
    • B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould

Definitions

  • High-quality components are manufactured using the vacuum die-casting process. High demands are placed on the quality of these parts, including avoiding oxides and contamination.
  • the process is characterized in that the melt is metered by applying a vacuum into the filling chamber via a suction pipe located in the melt. After dosing in the casting chamber, the casting piston pushes the melt towards the die. Due to the movement of the casting piston, air is drawn in from the surrounding atmosphere through the free annular space that is created and also penetrates into the suction pipe. The oxygen contained in the air leads to the oxidation of the melt, especially when processing magnesium or other easily oxidizable melts. Oxides, so-called. Scabies "that grow with every casting cycle and build up in the intake manifold. The casting process is negatively influenced and as a result the cast part quality is considerably reduced by oxide inclusions and exact dosing is no longer possible.
  • Figure 1 shows the injection system 1 of a vacuum die casting machine which via anchor 2 with the fixed Platen 3 is connected. Between firmer Platen 3 and stand part 4 of the injection system 1 the holding furnace 5 is arranged for the liquid melt. The below the melting surface in the holding furnace 5 immersed suction tube is designated 6. The top end of suction tube 6 is connected to the casting chamber 7. In the Casting chamber 7 is casting piston 8, which with Casting piston rod 9 is connected. Casting piston rod 9 is with connected to the actual casting unit 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Details (AREA)
  • Vacuum Packaging (AREA)
EP00108213A 1999-06-02 2000-04-14 Machine à coulée sous vide sous pression Expired - Lifetime EP1057558B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19925148A DE19925148A1 (de) 1999-06-02 1999-06-02 Verhinderung der Oxidation der Schmelze bei einer nach einem Vakuumverfahren arbeitenden Druckgießmaschine
DE19925148 1999-06-02

Publications (2)

Publication Number Publication Date
EP1057558A1 true EP1057558A1 (fr) 2000-12-06
EP1057558B1 EP1057558B1 (fr) 2004-12-01

Family

ID=7909927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00108213A Expired - Lifetime EP1057558B1 (fr) 1999-06-02 2000-04-14 Machine à coulée sous vide sous pression

Country Status (2)

Country Link
EP (1) EP1057558B1 (fr)
DE (2) DE19925148A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8813815B2 (en) 2009-09-22 2014-08-26 Ksm Castings Group Gmbh Vacuum die-casting system, and method for operating a vacuum die-cast system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057324A1 (de) * 2004-11-27 2006-06-01 Pfeiffer Vacuum Gmbh Vakuumdruckgussverfahren
DE102019107325A1 (de) * 2019-03-21 2020-09-24 Engel Austria Gmbh Aufschmelzeinheit für eine Formgebungsmaschine und Formgebungsmaschine mit einer solchen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5246055A (en) * 1989-03-07 1993-09-21 Aluminum Company Of America Vacuum die-casting machine with apparatus and method for controlling pressure behind piston
US5263531A (en) * 1991-09-23 1993-11-23 Gibbs Die Casting Aluminum Corporation Casting process using low melting point core material
EP0790090A2 (fr) * 1996-02-16 1997-08-20 Müller-Weingarten AG Machine de coulée à dépression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5246055A (en) * 1989-03-07 1993-09-21 Aluminum Company Of America Vacuum die-casting machine with apparatus and method for controlling pressure behind piston
US5263531A (en) * 1991-09-23 1993-11-23 Gibbs Die Casting Aluminum Corporation Casting process using low melting point core material
EP0790090A2 (fr) * 1996-02-16 1997-08-20 Müller-Weingarten AG Machine de coulée à dépression

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8813815B2 (en) 2009-09-22 2014-08-26 Ksm Castings Group Gmbh Vacuum die-casting system, and method for operating a vacuum die-cast system
US8967232B2 (en) 2009-09-22 2015-03-03 Ksm Castings Group Gmbh Vacuum die-casting system and method for operation of such a vacuum die-casting system

Also Published As

Publication number Publication date
DE19925148A1 (de) 2000-12-07
EP1057558B1 (fr) 2004-12-01
DE50008799D1 (de) 2005-01-05

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