WO1999024194A1 - Method and apparatus for melting non-ferrous metals, especially magnesium - Google Patents
Method and apparatus for melting non-ferrous metals, especially magnesium Download PDFInfo
- Publication number
- WO1999024194A1 WO1999024194A1 PCT/FI1997/000676 FI9700676W WO9924194A1 WO 1999024194 A1 WO1999024194 A1 WO 1999024194A1 FI 9700676 W FI9700676 W FI 9700676W WO 9924194 A1 WO9924194 A1 WO 9924194A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- dosing
- furnace
- metal
- outlet
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/14—Charging or discharging liquid or molten material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D39/00—Equipment for supplying molten metal in rations
- B22D39/02—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/19—Arrangements of devices for discharging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
- F27D2003/0054—Means to move molten metal, e.g. electromagnetic pump
- F27D2003/0056—Means to move molten metal, e.g. electromagnetic pump through a syphon in a vacuum chamber, e.g. involving aspiration or pressure on the bath
Definitions
- the furnace according to our invention comprises an inlet chamber 1, a main melting chamber 2 and an outlet chamber 3.
- a successive cleaning of the metal takes place, especially in case a filter 8 is placed in the wall opening or openings.
- the impurities are taken away as need arises.
- the heating of the furnace is not shown.
- Molten metal may be fed to the casting device manually or using an automatic ladle.
- a preferred method is however to feed the melt utilizing a pneumatic pumping system as shown schematically in Fig.2.
- a pneumatic pumping system as shown schematically in Fig.2.
- the outlet chamber there is located in this case a pump chamber 9, which has a small inlet opening 10 and a larger outlet pipe 11.
- the pump chamber is hermetically closed by the lid 12.
- molten metal When over-pressure via a pipe 13 in the pump chamber lid, in accordance with a method earlier patented by us, is applied on the metal surface in the pump chamber using a suitable gas, e.g. nitrogen, molten metal will be forced out through the outlet pipe.
- the outlet pipe 11 is connected to the upper part of a tank being a separate chamber in the melting furnace or a small and completely separate dosing furnace 14.
- the lower inner surface 15 of this outlet pipe shall at its outlet end be at a level slightly higher than the maximum metal level in the melting furnace, but so much lower than the upper edge 16 of the dosing furnace or chamber that the amount of melt, that one pump stroke pumps out, may be contained in the dosing furnace or chamber with no over-filling. This amount of melt pumped out by one pump stroke may be calculated approximately and measured experimentally.
- valve 17 In the bottom of the dosing furnace or chamber 14 there is a valve 17, which will open on a signal from the casting device. A clock controls the time this valve stays open. Since the level in the dosing fiirnce or chamber will be nearly constant, the result will be a precise dosing. In case the valve is computer controlled the dosing rate may also be changed in a controlled manner.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU48704/97A AU4870497A (en) | 1997-11-07 | 1997-11-07 | Method and apparatus for melting non-ferrous metals, especially magnesium |
EP97911268A EP1035932A1 (en) | 1997-11-07 | 1997-11-07 | Method and apparatus for melting non-ferrous metals, especially magnesium |
PCT/FI1997/000676 WO1999024194A1 (en) | 1997-11-07 | 1997-11-07 | Method and apparatus for melting non-ferrous metals, especially magnesium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FI1997/000676 WO1999024194A1 (en) | 1997-11-07 | 1997-11-07 | Method and apparatus for melting non-ferrous metals, especially magnesium |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999024194A1 true WO1999024194A1 (en) | 1999-05-20 |
Family
ID=8556692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1997/000676 WO1999024194A1 (en) | 1997-11-07 | 1997-11-07 | Method and apparatus for melting non-ferrous metals, especially magnesium |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1035932A1 (en) |
AU (1) | AU4870497A (en) |
WO (1) | WO1999024194A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1426455A1 (en) * | 2002-12-04 | 2004-06-09 | Ing. Rauch Fertigungstechnik GmbH | Process for rapidly melting a metal like magnesium and melt furnace therefor |
EP2859972A1 (en) * | 2013-10-14 | 2015-04-15 | StrikoWestofen GmbH | Method and device for depositing a metered quantity of a melt |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1384277A (en) * | 1964-01-18 | 1965-01-04 | Bbc Brown Boveri & Cie | Device for pouring exact doses of liquid metal |
FR2105056A1 (en) * | 1970-09-18 | 1972-04-28 | Merlin Gerin | Automatic filling of a chill mould - from a heated crucible which under press by gravity feed |
US4777998A (en) * | 1986-10-31 | 1988-10-18 | Aluminium Pechiney | Machine for pressure casting of metal parts possibly containing fibres of ceramic materials |
DE4439214A1 (en) * | 1994-11-03 | 1996-05-09 | Schmitz & Apelt Loi Industrieo | Magnesium melting furnace and method for melting magnesium |
-
1997
- 1997-11-07 WO PCT/FI1997/000676 patent/WO1999024194A1/en not_active Application Discontinuation
- 1997-11-07 EP EP97911268A patent/EP1035932A1/en not_active Ceased
- 1997-11-07 AU AU48704/97A patent/AU4870497A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1384277A (en) * | 1964-01-18 | 1965-01-04 | Bbc Brown Boveri & Cie | Device for pouring exact doses of liquid metal |
FR2105056A1 (en) * | 1970-09-18 | 1972-04-28 | Merlin Gerin | Automatic filling of a chill mould - from a heated crucible which under press by gravity feed |
US4777998A (en) * | 1986-10-31 | 1988-10-18 | Aluminium Pechiney | Machine for pressure casting of metal parts possibly containing fibres of ceramic materials |
DE4439214A1 (en) * | 1994-11-03 | 1996-05-09 | Schmitz & Apelt Loi Industrieo | Magnesium melting furnace and method for melting magnesium |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN, Vol. 7, No. 104, (M-212); & JP 58025862 A (FUJI DENKI SEIZO K.K.) 16 February 1983. * |
PATENT ABSTRACTS OF JAPAN, Vol. 95, No. 831; & JP 7088630 A (HIROSHIMA ALUM KOGYO KK) 4 April 1995. * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1426455A1 (en) * | 2002-12-04 | 2004-06-09 | Ing. Rauch Fertigungstechnik GmbH | Process for rapidly melting a metal like magnesium and melt furnace therefor |
DE10256513A1 (en) * | 2002-12-04 | 2004-06-24 | Ing. Rauch Fertigungstechnik Ges.M.B.H. | Method for melting a metal and apparatus for carrying out the method |
DE10256513B4 (en) * | 2002-12-04 | 2009-11-26 | Ing. Rauch Fertigungstechnik Ges.M.B.H. | Method for melting a metal and apparatus for carrying out the method |
EP2859972A1 (en) * | 2013-10-14 | 2015-04-15 | StrikoWestofen GmbH | Method and device for depositing a metered quantity of a melt |
Also Published As
Publication number | Publication date |
---|---|
EP1035932A1 (en) | 2000-09-20 |
AU4870497A (en) | 1999-05-31 |
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