CA1079930A - Low pressure or counterpressure casting apparatus - Google Patents
Low pressure or counterpressure casting apparatusInfo
- Publication number
- CA1079930A CA1079930A CA264,282A CA264282A CA1079930A CA 1079930 A CA1079930 A CA 1079930A CA 264282 A CA264282 A CA 264282A CA 1079930 A CA1079930 A CA 1079930A
- Authority
- CA
- Canada
- Prior art keywords
- crucible
- molten metal
- elbow
- mold
- intermediate crucible
- 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
Links
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
- B22D18/08—Controlling, supervising, e.g. for safety reasons
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Braking Systems And Boosters (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Dental Prosthetics (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
A casting apparatus for low-pressure or counterpressure casting of nonferrous metals comprises a casting mold which is fed with the melt by a siphon tube opening upwardly into the mold and communicating with an intermediate crucible for molten metal. The siphon tube has an elbow lying above the level of the molten metal in the intermediate crucible which is connected to a main crucible by a conduit whose inlet into the intermediate crucible can be blocked by a bell. Gas from an inert-gas supply can be applied under pressure to the crucible and the elbow.
A casting apparatus for low-pressure or counterpressure casting of nonferrous metals comprises a casting mold which is fed with the melt by a siphon tube opening upwardly into the mold and communicating with an intermediate crucible for molten metal. The siphon tube has an elbow lying above the level of the molten metal in the intermediate crucible which is connected to a main crucible by a conduit whose inlet into the intermediate crucible can be blocked by a bell. Gas from an inert-gas supply can be applied under pressure to the crucible and the elbow.
Description
r 1~79930 . .
This invention relates to a low pressure or counter-pressure casting apparatus which can be used for the casting of - workpieces of non-ferrous metals.
Apparatus for casting under low pressure are known, in 1 which the crucible with the runner tube are disposed inside a -' hermetically sealed chamber which is arranged directly under the plate which carries the casting mould. The drawbacks of these devices are that they limit the capacity of the crucible; it is ., also impossible to provide ejectors and cores in the bottom half :, of the casting mould, since there is no place for disposing the mechanism for their actuation.
~ These drawbacks are not only a result of design .' . : .
,` considerations but also of technology. The rising of the metal in the runner tube for filling the casting mould and its return result in oxydation along the walls of the runner tube itself ... .
which are wetted by the molten metal, and the formed oxide '; scale is carried into the casting mold during the next casting ;'~:,";
cycle. This can be avoided by the use of an inert gas instead of air, but this makes the process much more e~pensive.
~-, 20 The direct feeding of the casting mould from the cru-cible is disadvantageous because the variation of the level of ; the metal in it causes a variation of the velocity of filling the mould, which leads to an inconstancy of the quality of the pro-- duced castings.
The frequent recharging of the crucible with molten ; metal, because of its limited volume, causes idling of the machine and reduces its productivity.
Machines for casting under low pressure are known, in which the crucible for molten metal is disposed outside the machine, which makes it possible to use crucibles of greater volume and to free space under the mould for the arrangement of different mechanisms. However, the ability to protect the ' :"' ,, ..
metal from oxidation and absorbtion of gases from the air is greatly impaired.
The aforementioned drawbacks are typical also for the ` known machines for casting under counterpressure.
It is, therefore, a general object of the invention to avoid the aforementioned drawbacks of existing machines and to - provide conditions for reducing to a minimum the oxidation of the metal.
, More particularly, the invention is a casting apparatus - 10 which protects the free surfaces of the metal melt by means of an inert gas with a minimum consumption of the latter and is featured by a rational arrangement of the units, which permits the disposition of different mechanisms directly under the plate of the casting mould.
; Accordingly, the invention as herein claimed is a low-- pressure or counterpressure casting apparatus which essentially comprises: a mould-support structure having a plate carrying a mould and formed with an inlet for feeding molten metal into ' the mould; a main crucible, for receiving molten metal, ~` 20 hermetically sealed and provided with a delivery conduit reaching into the mass of molten metal so that it may be transferred from the main crucible; an intermediate crucible which receives molten metal from the delivery conduit, which conduit opens into it at a location above its bottom, this intermediate crucible being hermetically sealed and having an outlet disposed below the level at which the delivery conduit communicates with the intermediate crucible; a siphon conduit having an upwardly extending stretch communicating at its lower end with the outlet of the intermediate crucible, an elbow at the upper end of the upwardly extending stretch substantially at the level of the inlet into the intermediate crucible, a downwardly extending stretch running from the elbow and a further stretch rising ; ~ - 2 ..... .
, ` . ~.
,-. ~ ' '.
'` , ~ ' :` ~ '` '`
i ' I~
. from this downwardly extending stretch to the inlet of the . . .
mould,this elbow being disposed above the level of the molten metal in the intermediate crucible; a stopper valve along the siphon conduit between the inlet to the mould and the elbow, ~i- and a source of inert gas under pressure. First, second and $-'~ third control means connect the gas source respectively with the ~' main crucible, the intermediate crucible and the elbow for .
regulating the inert-gas pressure therein to displace molten metal from the main crucible to the intermediate crucible and .. 10 from the intermediate crucible to the mould and establish an .~. inert-gas cushion at the elbow separating molten metal in the stretches of the siphon conduit. A gate is provided in the , ,;, . intermediate crucible for selectively unblocking the end of the ~e delivery conduit opening into the intermediate crucible and for ~' ~-` the gas-tight sealing thereof.
According to a preferred embodiment, there is further .~ provided a counterpressure chamber on the structure enclosing i- the mold, a source of air under pressure connected to the chamber, and control means connecting the sources for balancing : 20 the pressures applied by the sources to the crucibles and the chamber, respectively.
. For casting, inert gas is supplied in the intermediate -- crucible, which is filled with the necessary quantity of molten metal, the bell to the second metal conduit coming from the `. basic crucible being closed. The pressure of the inert gas is ..: ., controlled in accordance with the velocity of the filling of the , casting mould. Simultaneously, the control member for the pres-: sure in the upper elbow of the syphon-type metal conduit is .~: also actuated, in order not to allow the metal to pass through . .. .
:. 30 the conduit, driving out the gas from~ the upper elbow, where a gas cushion had been formed, which after the filling of the casting mould and the relief of the pressure in the intermediate B
.
"
. .
.
crucible is reformed to interrupt the metal flow.
To effect casting, it is necessary that all spaces of the machine be hermetically sealed. Thus, a protection of the , molten metal from oxidation is achieved in the basic crucible as well as in the intermediate crucible and the syphon-type metal conduit.
- The invention has further advantages, such as:
,i .
- the influence of the varying level of the molten metal in the main crucible on the velocity of filling the casting -~; 10 mould is eliminated;
-: - the space under the casting mould is made available for the arrangement of actuating mechanisms, etc.
- idle times of the machine for recharging the main 'I crucible with metal are avoided;
- it is possible to connect several casting machines, equipped with individual intermediate crucibles, to one main crucible.
All this leads to an improvement of the quality of the . .
castings and to an increase in the productivity of the machines.
For a better understanding of the invention, its , operating advantages and specific objects attained by its use, . . .
: ; reference is made to the following description having reference .'7 to the accompanying drawing in which there is illustrated a preferred embodiment of the invention.
- The intermediate crucible 1 for molten metal, having a capacity sufficient for one or several operating cycles of the machine, is disposed outside the machine at such a height -i that, at the highest level of the metal inside it, it remains - lower than the level of the upper elbow 2 in the inclined branch ,~ 30 of the syphon-type metal conduit 3, which connects the inter-~- mediate crucible 1 with the casting mould 4. In the bottom , elbow of the syphon-type metal conduit 3, there is provided a .
, .
.. . . . . . . .:
stopper valve 5 which, in the non-operating position of the machine as shown in the drawing, is closed and is intended to prevent undesired variations of the level of the metal in the syphon-type metal conduit.
. In the upper portion of the intermediate crucible 1, ~` which cannot be attained by the level of the metal, there is ~- disposed a gas-tight bell or gate 6 which is controlled from ~ outside and covers up the inlet orifice of the second metal feed ~ eonduit 7, which connects the main crucible 8 for molten metal .$~
~`` 10 and whose volume and disposition are arbitrary and are ~........... .
determined appropriately in accordance with the conditions in the plant, for the feeding of one or several casting machines, for example. The main crucible 8 is also hermetically sealed.
`:~ The upper elbow 2 of the syphon-type metal conduit 3, as well as the spaces over the metal in the intermediate cru-~; cible 1 and in the basic crucible 8 are connected by means of known valves 9, 11 and respective pressure control members 12, 13, 14 in between and with a reservoir or container 15 for pressurized inert gas. The chamber 16, inside which the casting - 20 mould 4 is disposed, is connected by means of known valves 17 and 18 to a reservoir 19 for pressurized air while both gas .... .
systems - for the air and for the inert gas - are interconnected ~ by a known control device 20, which is used for balancing and ; ~ controlling the pressure differential between them.
The machine in accordanee with the present invention operates as follows:
At equalized pressure in the intermediate crucible 1 and in the main crucible 8, a command is fed in a known manner and the gas-tight bell 6 is opened and then, by increasing the - 30 pressure in the main crucible 8, a portion of metal is poured over into the intermediate crucible 1 which is sufficient for one or more castings. After equalizing the pressure in both :~, .
-- B - 5 _ 1~79930 .
crucibles, thus causing the interruption of the metal flow, a command is fed for closing the gas-tight bell 6. For filling the casting mould 4 with metal, the stopper valve 5 of the syphon-type metal conduit 3 is opened by the valve 10 of the inert gas system; the pressure in the intermediate crucible 1 is increased and the metal in it rises through the syphon-type metal conduit 3 into the casting mould 4, driving out the gas - from the upper elbow 2 and from the pocket 2a thereby removing ; the gas cushion that had been formed therein.
After filling the casting mould 4 and the partial solidification of the melt, the pressure in the intermediate crucible 1 is relieved, the valve 9 provides atmosphere pressure in the upper elbow, and as a result the metal from the vertical branch of the syphon-type metal conduit 3 descends gravita-tionally below the level of the upper elbow 2, the metal flow being interrupted. This level itself is chosen appropriately at the smallest possible distance from the level of the inlet of the syphon-type metal conduit 3 into the casting mould 4.
' For casting under counterpressure, the counterpressure is produced with pressurized air from ~he reservoir 19 by means - of the valves 17 and 18, the control device 20 having the ~ function of controlling the pressure inside the intermediate ;~ cruclble 1, controlled by inert gas so that its magnitude is higher than that in chamber 16 of the casting mould in order to i effect a displacement of the molten metaL.
; Timing of the action of all control members can be - effected by known techniques used for control casting machines. " .
,' , , ' ,, '
This invention relates to a low pressure or counter-pressure casting apparatus which can be used for the casting of - workpieces of non-ferrous metals.
Apparatus for casting under low pressure are known, in 1 which the crucible with the runner tube are disposed inside a -' hermetically sealed chamber which is arranged directly under the plate which carries the casting mould. The drawbacks of these devices are that they limit the capacity of the crucible; it is ., also impossible to provide ejectors and cores in the bottom half :, of the casting mould, since there is no place for disposing the mechanism for their actuation.
~ These drawbacks are not only a result of design .' . : .
,` considerations but also of technology. The rising of the metal in the runner tube for filling the casting mould and its return result in oxydation along the walls of the runner tube itself ... .
which are wetted by the molten metal, and the formed oxide '; scale is carried into the casting mold during the next casting ;'~:,";
cycle. This can be avoided by the use of an inert gas instead of air, but this makes the process much more e~pensive.
~-, 20 The direct feeding of the casting mould from the cru-cible is disadvantageous because the variation of the level of ; the metal in it causes a variation of the velocity of filling the mould, which leads to an inconstancy of the quality of the pro-- duced castings.
The frequent recharging of the crucible with molten ; metal, because of its limited volume, causes idling of the machine and reduces its productivity.
Machines for casting under low pressure are known, in which the crucible for molten metal is disposed outside the machine, which makes it possible to use crucibles of greater volume and to free space under the mould for the arrangement of different mechanisms. However, the ability to protect the ' :"' ,, ..
metal from oxidation and absorbtion of gases from the air is greatly impaired.
The aforementioned drawbacks are typical also for the ` known machines for casting under counterpressure.
It is, therefore, a general object of the invention to avoid the aforementioned drawbacks of existing machines and to - provide conditions for reducing to a minimum the oxidation of the metal.
, More particularly, the invention is a casting apparatus - 10 which protects the free surfaces of the metal melt by means of an inert gas with a minimum consumption of the latter and is featured by a rational arrangement of the units, which permits the disposition of different mechanisms directly under the plate of the casting mould.
; Accordingly, the invention as herein claimed is a low-- pressure or counterpressure casting apparatus which essentially comprises: a mould-support structure having a plate carrying a mould and formed with an inlet for feeding molten metal into ' the mould; a main crucible, for receiving molten metal, ~` 20 hermetically sealed and provided with a delivery conduit reaching into the mass of molten metal so that it may be transferred from the main crucible; an intermediate crucible which receives molten metal from the delivery conduit, which conduit opens into it at a location above its bottom, this intermediate crucible being hermetically sealed and having an outlet disposed below the level at which the delivery conduit communicates with the intermediate crucible; a siphon conduit having an upwardly extending stretch communicating at its lower end with the outlet of the intermediate crucible, an elbow at the upper end of the upwardly extending stretch substantially at the level of the inlet into the intermediate crucible, a downwardly extending stretch running from the elbow and a further stretch rising ; ~ - 2 ..... .
, ` . ~.
,-. ~ ' '.
'` , ~ ' :` ~ '` '`
i ' I~
. from this downwardly extending stretch to the inlet of the . . .
mould,this elbow being disposed above the level of the molten metal in the intermediate crucible; a stopper valve along the siphon conduit between the inlet to the mould and the elbow, ~i- and a source of inert gas under pressure. First, second and $-'~ third control means connect the gas source respectively with the ~' main crucible, the intermediate crucible and the elbow for .
regulating the inert-gas pressure therein to displace molten metal from the main crucible to the intermediate crucible and .. 10 from the intermediate crucible to the mould and establish an .~. inert-gas cushion at the elbow separating molten metal in the stretches of the siphon conduit. A gate is provided in the , ,;, . intermediate crucible for selectively unblocking the end of the ~e delivery conduit opening into the intermediate crucible and for ~' ~-` the gas-tight sealing thereof.
According to a preferred embodiment, there is further .~ provided a counterpressure chamber on the structure enclosing i- the mold, a source of air under pressure connected to the chamber, and control means connecting the sources for balancing : 20 the pressures applied by the sources to the crucibles and the chamber, respectively.
. For casting, inert gas is supplied in the intermediate -- crucible, which is filled with the necessary quantity of molten metal, the bell to the second metal conduit coming from the `. basic crucible being closed. The pressure of the inert gas is ..: ., controlled in accordance with the velocity of the filling of the , casting mould. Simultaneously, the control member for the pres-: sure in the upper elbow of the syphon-type metal conduit is .~: also actuated, in order not to allow the metal to pass through . .. .
:. 30 the conduit, driving out the gas from~ the upper elbow, where a gas cushion had been formed, which after the filling of the casting mould and the relief of the pressure in the intermediate B
.
"
. .
.
crucible is reformed to interrupt the metal flow.
To effect casting, it is necessary that all spaces of the machine be hermetically sealed. Thus, a protection of the , molten metal from oxidation is achieved in the basic crucible as well as in the intermediate crucible and the syphon-type metal conduit.
- The invention has further advantages, such as:
,i .
- the influence of the varying level of the molten metal in the main crucible on the velocity of filling the casting -~; 10 mould is eliminated;
-: - the space under the casting mould is made available for the arrangement of actuating mechanisms, etc.
- idle times of the machine for recharging the main 'I crucible with metal are avoided;
- it is possible to connect several casting machines, equipped with individual intermediate crucibles, to one main crucible.
All this leads to an improvement of the quality of the . .
castings and to an increase in the productivity of the machines.
For a better understanding of the invention, its , operating advantages and specific objects attained by its use, . . .
: ; reference is made to the following description having reference .'7 to the accompanying drawing in which there is illustrated a preferred embodiment of the invention.
- The intermediate crucible 1 for molten metal, having a capacity sufficient for one or several operating cycles of the machine, is disposed outside the machine at such a height -i that, at the highest level of the metal inside it, it remains - lower than the level of the upper elbow 2 in the inclined branch ,~ 30 of the syphon-type metal conduit 3, which connects the inter-~- mediate crucible 1 with the casting mould 4. In the bottom , elbow of the syphon-type metal conduit 3, there is provided a .
, .
.. . . . . . . .:
stopper valve 5 which, in the non-operating position of the machine as shown in the drawing, is closed and is intended to prevent undesired variations of the level of the metal in the syphon-type metal conduit.
. In the upper portion of the intermediate crucible 1, ~` which cannot be attained by the level of the metal, there is ~- disposed a gas-tight bell or gate 6 which is controlled from ~ outside and covers up the inlet orifice of the second metal feed ~ eonduit 7, which connects the main crucible 8 for molten metal .$~
~`` 10 and whose volume and disposition are arbitrary and are ~........... .
determined appropriately in accordance with the conditions in the plant, for the feeding of one or several casting machines, for example. The main crucible 8 is also hermetically sealed.
`:~ The upper elbow 2 of the syphon-type metal conduit 3, as well as the spaces over the metal in the intermediate cru-~; cible 1 and in the basic crucible 8 are connected by means of known valves 9, 11 and respective pressure control members 12, 13, 14 in between and with a reservoir or container 15 for pressurized inert gas. The chamber 16, inside which the casting - 20 mould 4 is disposed, is connected by means of known valves 17 and 18 to a reservoir 19 for pressurized air while both gas .... .
systems - for the air and for the inert gas - are interconnected ~ by a known control device 20, which is used for balancing and ; ~ controlling the pressure differential between them.
The machine in accordanee with the present invention operates as follows:
At equalized pressure in the intermediate crucible 1 and in the main crucible 8, a command is fed in a known manner and the gas-tight bell 6 is opened and then, by increasing the - 30 pressure in the main crucible 8, a portion of metal is poured over into the intermediate crucible 1 which is sufficient for one or more castings. After equalizing the pressure in both :~, .
-- B - 5 _ 1~79930 .
crucibles, thus causing the interruption of the metal flow, a command is fed for closing the gas-tight bell 6. For filling the casting mould 4 with metal, the stopper valve 5 of the syphon-type metal conduit 3 is opened by the valve 10 of the inert gas system; the pressure in the intermediate crucible 1 is increased and the metal in it rises through the syphon-type metal conduit 3 into the casting mould 4, driving out the gas - from the upper elbow 2 and from the pocket 2a thereby removing ; the gas cushion that had been formed therein.
After filling the casting mould 4 and the partial solidification of the melt, the pressure in the intermediate crucible 1 is relieved, the valve 9 provides atmosphere pressure in the upper elbow, and as a result the metal from the vertical branch of the syphon-type metal conduit 3 descends gravita-tionally below the level of the upper elbow 2, the metal flow being interrupted. This level itself is chosen appropriately at the smallest possible distance from the level of the inlet of the syphon-type metal conduit 3 into the casting mould 4.
' For casting under counterpressure, the counterpressure is produced with pressurized air from ~he reservoir 19 by means - of the valves 17 and 18, the control device 20 having the ~ function of controlling the pressure inside the intermediate ;~ cruclble 1, controlled by inert gas so that its magnitude is higher than that in chamber 16 of the casting mould in order to i effect a displacement of the molten metaL.
; Timing of the action of all control members can be - effected by known techniques used for control casting machines. " .
,' , , ' ,, '
Claims (2)
1. An apparatus for the low-pressure and counterpres-sure casting of a molten metal, comprising:
a mold-support structure having a plate carrying a mold, said plate being formed with an inlet for feeding molten metal into said mold:
a main crucible for receiving molten metal, said main crucible being hermetically sealed and provided with a delivery conduit reaching into the molten metal in said main crucible for transferring the molten metal therefrom;
an intermediate crucible receiving molten metal from said delivery conduit, said delivery conduit opening into said intermediate crucible at a location above the bottom thereof, said intermediate crucible being hermetically sealed and having an outlet disposed below the level at which said delivery conduit communicates with said intermediate crucible;
a siphon conduit having an upwardly extending stretch communicating at its lower end with said outlet, an elbow at the upper end of said upwardly extending stretch substantially at the level of said inlet, a downwardly extending stretch running from said elbow, and a further stretch rising from said downwardly extending stretch to said inlet of said mold, said elbow being disposed above the level of the molten metal in said intermediate crucible;
a stopper valve along said siphon conduit between said inlet to said mold and said elbow;
a source of an inert gas under pressure;
first control means second control means and third control means respectively connecting said source with said main crucible, said intermediate crucible and said elbow for regula-ting the inert-gas pressure therein to displace molten metal from said main crucible to said intermediate crucible and from said intermediate crucible to said mold and for establishing an inert-gas cushion at said elbow separating molten metal in said stretches of said siphon conduit; and a gate in said intermediate crucible for selectively unblocking the end of said delivery conduit opening into said intermediate crucible and for the gastight sealing thereof.
a mold-support structure having a plate carrying a mold, said plate being formed with an inlet for feeding molten metal into said mold:
a main crucible for receiving molten metal, said main crucible being hermetically sealed and provided with a delivery conduit reaching into the molten metal in said main crucible for transferring the molten metal therefrom;
an intermediate crucible receiving molten metal from said delivery conduit, said delivery conduit opening into said intermediate crucible at a location above the bottom thereof, said intermediate crucible being hermetically sealed and having an outlet disposed below the level at which said delivery conduit communicates with said intermediate crucible;
a siphon conduit having an upwardly extending stretch communicating at its lower end with said outlet, an elbow at the upper end of said upwardly extending stretch substantially at the level of said inlet, a downwardly extending stretch running from said elbow, and a further stretch rising from said downwardly extending stretch to said inlet of said mold, said elbow being disposed above the level of the molten metal in said intermediate crucible;
a stopper valve along said siphon conduit between said inlet to said mold and said elbow;
a source of an inert gas under pressure;
first control means second control means and third control means respectively connecting said source with said main crucible, said intermediate crucible and said elbow for regula-ting the inert-gas pressure therein to displace molten metal from said main crucible to said intermediate crucible and from said intermediate crucible to said mold and for establishing an inert-gas cushion at said elbow separating molten metal in said stretches of said siphon conduit; and a gate in said intermediate crucible for selectively unblocking the end of said delivery conduit opening into said intermediate crucible and for the gastight sealing thereof.
2. The apparatus defined in claim 1, further com-prising a counterpressure chamber on said structure enclosing said mold, a source of air under pressure connected to said chamber, and control means connecting said sources for balancing the pressures applied by said sources to said crucibles and said chamber, respectively.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BG31330A BG22157A1 (en) | 1975-10-27 | 1975-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1079930A true CA1079930A (en) | 1980-06-24 |
Family
ID=3901656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA264,282A Expired CA1079930A (en) | 1975-10-27 | 1976-10-27 | Low pressure or counterpressure casting apparatus |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS5257016A (en) |
| AT (1) | AT351194B (en) |
| BE (1) | BE847665A (en) |
| BG (1) | BG22157A1 (en) |
| CA (1) | CA1079930A (en) |
| CH (1) | CH615848A5 (en) |
| DD (1) | DD126592A1 (en) |
| DE (1) | DE2648730C3 (en) |
| DK (1) | DK486376A (en) |
| FR (1) | FR2329390A1 (en) |
| GB (1) | GB1557972A (en) |
| IN (1) | IN145751B (en) |
| NL (1) | NL7611920A (en) |
| NO (1) | NO144032C (en) |
| SE (1) | SE7611838L (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2453699A1 (en) * | 1979-04-13 | 1980-11-07 | Fonderie Soc Gen De | Low pressure casting of metals, esp. brass - which is kept at top end of stand pipe between casting cycles, so no dross can enter mould |
| DE3401354A1 (en) * | 1984-01-17 | 1985-07-18 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Process for the casting of grey cast-iron parts |
| GB2199526B (en) * | 1986-12-11 | 1990-05-09 | Pace Inc | Portable apparatus utilizing molten solder for procedures such as soldering and desoldering |
| DE4116998A1 (en) * | 1991-05-24 | 1992-11-26 | Ats Beteiligungs Gmbh | Die casting magnesium parts - using syphon-like tubes to maintain equal melt levels in area below mould, casting furnace and melting furnace |
| JPH0710352U (en) * | 1993-07-05 | 1995-02-14 | 久紀 照屋 | Door finger packing safety device |
| DE4440768C1 (en) * | 1994-11-15 | 1996-07-25 | Bachmann Giesserei & Formen | Device for casting metals |
| GB9813826D0 (en) * | 1998-06-27 | 1998-08-26 | Campbell John | Dispensing apparatus and method |
| DE19845389A1 (en) * | 1998-10-02 | 2000-04-06 | Georg Fischer Disa Ag | Device for increasing low-pressure casting of molten metals |
| DE10061026A1 (en) * | 2000-12-08 | 2002-06-13 | Bayerische Motoren Werke Ag | Metal casting process and device |
| US6841120B2 (en) | 2002-06-13 | 2005-01-11 | Alotech Ltd. Llc | Dispensing apparatus and method |
| JP4534057B2 (en) * | 2006-08-03 | 2010-09-01 | 有明セラコ株式会社 | Molten metal supply apparatus and supply method thereof |
| CN103691911B (en) * | 2013-12-16 | 2015-08-19 | 河南理工大学 | A kind of casting method of magnesium alloy and device thereof |
| CN112775410B (en) * | 2020-12-14 | 2025-04-15 | 徐州欧百瑞智能设备有限公司 | Feed pipe for die casting barrel erosion prevention |
| CN118237560B (en) * | 2024-03-01 | 2024-10-11 | 广东万丰摩轮有限公司 | A kind of precision casting equipment for high strength aluminum alloy |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1356591A (en) * | 1962-08-28 | 1964-03-27 | Siemens Ag | Device for shell casting and furnace installation provided with said device or the like |
| FR1384277A (en) * | 1964-01-18 | 1965-01-04 | Bbc Brown Boveri & Cie | Device for pouring exact doses of liquid metal |
| GB1171295A (en) * | 1965-11-25 | 1969-11-19 | Ass Eng Ltd | Improvements in Diecasting |
| CH507760A (en) * | 1968-04-05 | 1971-05-31 | Inst Po Metalloznanie I Tekno | Process for the production of castings from easily vaporizable materials as well as equipment for the implementation of the process |
-
1975
- 1975-10-27 BG BG31330A patent/BG22157A1/xx unknown
-
1976
- 1976-10-25 SE SE7611838A patent/SE7611838L/en unknown
- 1976-10-25 AT AT792976A patent/AT351194B/en not_active IP Right Cessation
- 1976-10-26 DD DD195467A patent/DD126592A1/xx unknown
- 1976-10-26 NO NO763652A patent/NO144032C/en unknown
- 1976-10-26 GB GB44511/76A patent/GB1557972A/en not_active Expired
- 1976-10-26 FR FR7632264A patent/FR2329390A1/en active Pending
- 1976-10-26 CH CH1349476A patent/CH615848A5/en not_active IP Right Cessation
- 1976-10-27 BE BE2055403A patent/BE847665A/en unknown
- 1976-10-27 NL NL7611920A patent/NL7611920A/en not_active Application Discontinuation
- 1976-10-27 JP JP51129296A patent/JPS5257016A/en active Granted
- 1976-10-27 DE DE2648730A patent/DE2648730C3/en not_active Expired
- 1976-10-27 DK DK486376A patent/DK486376A/en not_active Application Discontinuation
- 1976-10-27 CA CA264,282A patent/CA1079930A/en not_active Expired
- 1976-10-30 IN IN1976/CAL/76A patent/IN145751B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2648730C3 (en) | 1979-04-05 |
| NO144032B (en) | 1981-03-02 |
| DE2648730A1 (en) | 1977-05-12 |
| JPS5415252B2 (en) | 1979-06-13 |
| AT351194B (en) | 1979-07-10 |
| BG22157A1 (en) | 1977-05-20 |
| FR2329390A1 (en) | 1977-05-27 |
| SE7611838L (en) | 1977-04-28 |
| DD126592A1 (en) | 1977-07-27 |
| DK486376A (en) | 1977-04-28 |
| GB1557972A (en) | 1979-12-19 |
| NO763652L (en) | 1977-04-28 |
| NO144032C (en) | 1981-06-10 |
| ATA792976A (en) | 1978-12-15 |
| IN145751B (en) | 1978-12-09 |
| DE2648730B2 (en) | 1978-08-03 |
| JPS5257016A (en) | 1977-05-11 |
| CH615848A5 (en) | 1980-02-29 |
| NL7611920A (en) | 1977-04-29 |
| BE847665A (en) | 1977-02-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |