WO1999055478A1 - Verfahren zum verarbeiten einer metallschmelze, insbesondere einer leichtmetallschmelze, sowie gekapselter und mit schutzgas beaufschlagbarer dosierofen - Google Patents
Verfahren zum verarbeiten einer metallschmelze, insbesondere einer leichtmetallschmelze, sowie gekapselter und mit schutzgas beaufschlagbarer dosierofen Download PDFInfo
- Publication number
- WO1999055478A1 WO1999055478A1 PCT/DE1999/001131 DE9901131W WO9955478A1 WO 1999055478 A1 WO1999055478 A1 WO 1999055478A1 DE 9901131 W DE9901131 W DE 9901131W WO 9955478 A1 WO9955478 A1 WO 9955478A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- melt
- furnace
- dosing
- metering
- casting machine
- Prior art date
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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
- B22D17/20—Accessories: Details
- B22D17/28—Melting pots
Definitions
- the invention relates to a method for processing a molten metal, in particular a light metal melt, by means of an encapsulated metering furnace charged with protective gas, which is connected via a riser to a casting machine or mold, which is charged with a quantifiable amount of melt by pressurizing the protective gas in the metering furnace and a metering furnace suitable for carrying out the method.
- the casting mold to be connected directly to the riser tube of a pressure-tight melting vessel is filled by displacing a quantity of the casting material corresponding to the mold cavity from the melting vessel by means of a charging body, the melting level being filled by means of a pressure-controlled protective gas filling is kept constant during the melting and casting phase.
- REPLACEMENT BLA ⁇ (RULE 26) 2 only certain bolt-shaped charging bodies with suitable connecting elements are used in this process.
- DE-OS 42 03 193 discloses a method for handling magnesium and magnesium alloy melts, in which the melt is fed to a casting device to be charged by generating an excess pressure in a protective gas volume above the molten bath level. The overpressure is generated by opening a valve that connects the dosing furnace to a pressure accumulator. The melt is metered by measuring the weight of the melt supplied or a size dependent thereon. After dosing, a pressure equalization is brought about again between the protective gas in the dosing furnace and the pouring device, which means that atmospheric pressure is established when the casting is removed.
- the solution has the disadvantage that the metering of the amount of melt is also still too imprecise and therefore the quality of the castings is inadequate.
- the invention has for its object to improve the method of the type mentioned in such a way that a metallurgically safe process control, an accurate and rapid metering of the amount of melt required for the casting process and an optimal coupling to the downstream casting process and a casting with high quality Casting is made possible.
- a dosing furnace suitable for the process should be specified.
- the object is achieved in that the melt quantity corresponding to a gross cast is fed to the coupled casting machine or mold by increasing the gas pressure in the metering furnace, the increase in the gas pressure corresponding to the height difference between the bath level of the melt and a fill level setpoint in the casting machine or mold that the temperature of the melt is measured in the dosing furnace and regulated to a preset temperature value, that the melt level in the riser pipe and / or the bath height of the melt in the dosing furnace is measured and regulated between preset limit values and that the gas pressure in the protective gas in the dosing furnace is regulated in this way becomes that the melt level in the riser pipe is essentially the same regardless of the bath height in the dosing furnace before each supply of melt to the casting machine or mold, 3 whereby the metered quantity and the casting temperature are kept between selectable limit values by means of the heating powers supplied, the quantity of charging material supplied and the quantity of melt removed as actuating and disturbing variables, and that the casting process takes place in the casting machine or mold under protective gas
- the method can preferably be carried out in such a way that the gas pressure of the protective gas is measured in the metering furnace and, depending on the bath height of the melt in the metering furnace, is regulated according to a preset function.
- the invention enables the disturbance variables of the overall process to be influenced prematurely.
- the melt is expediently additionally heated in the riser pipe. Heating should take place in a controlled manner by measuring the temperature of the melt in the riser pipe and regulating it to a preset temperature value via the heating power supplied to the riser pipe.
- the melt is always transported in a closed system using the shortest paths, shortest transport times and under precisely controlled temperature conditions. This enables a manageable process to be implemented with a high degree of certainty, as is necessary for the production of quality components.
- the metal can be added to the system by means of alloy material that has the properties guaranteed by the supplier, or in liquid form with cleaned and treated melt, the properties of which are precisely set and documented.
- the heat supply is adapted to the respective phases of the process with constant metal quantities with minimal paths for the heat flow and guarantees optimal energy input and thus high efficiency.
- the precise quantification takes place via a defined feed control and the metal can be preheated in a defined manner before immersion in the melt bath with the aid of a regulated heating system.
- the melting by immersion in a larger melt bath enables intensive heat transfer at the point in time at which the heat of fusion has to be introduced.
- the alloy material is initially held in the melt bath with the aid of a guide, so that when it enters the bath, no metal splashes occur and cold material sinks directly into the lower area of the melt bath.
- the charging device with guide is preferably arranged in the furnace lid or on the upper side wall, so that self-locking prevents alloy material from falling into the furnace in an uncontrolled manner.
- liquid charging In the case of liquid charging, a metered amount of metal with a defined temperature is introduced below the bath surface, for example via a siphon. Liquid batching can also be used in combination with solid batching, for example to add cleaned return material.
- the bath level in the system is expediently kept under a protective gas atmosphere at a pressure which is higher than the external atmospheric pressure, as a result of which melting reactions, burn-off losses and contamination are effectively prevented.
- the low dead volume and the quantified recharging allow the protective gas to be used sparingly, so that more expensive gases, such as argon, can also be used. This makes it possible to dispense with environmentally hazardous substances such as SF 6 or SO 2 . 5
- the level of the bath level in the dosing furnace is regulated in a narrow range by the constant recharging, so that the delivery height to the casting machine can be kept low, which enables a relatively low overpressure. This enables simple and precise pressure control.
- the charging material supplied is expediently preheated before being introduced into the metering furnace.
- Controlled heating also expediently takes place here, too, by measuring the temperature of the charging material and regulating it to a preset temperature value via the heating power supplied during preheating.
- the melt is removed during metering in the lower area of the bath via a riser pipe with low turbulence against gravity, ensuring that no metal just melted in the upper area of the melt bath is conveyed directly out of the system.
- the method can also be carried out in such a way that an antechamber to be arranged on the casting machine or mold is filled with the melt for metering, which is independent of the time of the casting process.
- the individual control loops can be networked in a programmable controller.
- the coupled control loops of the parameters dosing quantity and pouring temperature in connection with the recharging allow a very high dosing accuracy with constant pouring temperature.
- the efficiency of the dosing furnace is significantly increased by introducing energy into an almost constant melt volume.
- the melt bath is preferably heated in the lower region of the crucible, so that with the help of natural convection currents impermissible overheating, heat build-up and temperature differences in the bath are avoided.
- resistance heating conductors they are distributed on the outside of the cylindrical metering furnace in order to achieve the required high heating output during melting and keeping warm or are arranged inside in a so-called immersion heater. 6
- induction heating can be used advantageously, the efficiency of which is increased by coupling the largely constant melt volume.
- an exact local power adjustment can be carried out, so that the highest powers can also be achieved in the lower area of the melt pool if required.
- a particular advantage of induction technology is the option of variable frequency selection in order to specifically adjust the power input and the bath movement.
- the high melting power of induction enables an ideal compact unit with high flexibility, which is, for example, ideally suited for use in a flexible production cell in a die-casting foundry.
- a real-time controlled furnace process can thus be realized with the aid of the method according to the invention. Further improvements can also be achieved with the help of sensors in the casting machine, such as a metal front sensor in the filling chamber of a die casting machine, laser level sensor above a riser or other thermocouples, so that a control loop comprising the entire furnace process and the casting process can be set up.
- sensors in the casting machine such as a metal front sensor in the filling chamber of a die casting machine, laser level sensor above a riser or other thermocouples, so that a control loop comprising the entire furnace process and the casting process can be set up.
- the advantages achieved by the invention include, in addition to the high quality of the melt provided, above all a simple plant technology which, in a compact unit, solves all melt preparation tasks from the supplied feedstock to the casting process with optimal coupling of the casting process.
- the high process reliability enables an increased casting quality as well as an automatic, low-emission and environmentally friendly foundry operation.
- a metering oven suitable for carrying out the method contains
- thermocouple acting on the heating device via a controller for measuring the temperature (T s ) of the melt and a level sensor for the bath height (H) of the melt acting on the device for recharging via a controller and / or a pressure sensor acting on the pressure generator for the protective gas via a controller, in the case of a lack of a level sensor also acting on the controller for post-charging in the dosing furnace and / or level sensor on the riser.
- the regulator for the gas pressure can be designed so that the bath height of the melt measured with the level sensor in the dosing furnace is applied as a disturbance variable. In this way, regardless of the current level of the bath, such a gas pressure is always maintained in the metering furnace that a certain melt level is produced in the riser before each supply of melt to the casting device.
- the gas pressure can also be adjusted solely as a function of the melt level in the riser pipe, if its height is measured here alone using a level sensor. The level of gas pressure in the metering furnace can then be used to regulate the recharge.
- the device for recharging with solid charging material expediently consists of a lock provided with a tubular seal and a feed drive for the charging material which interacts with the fill level sensor.
- the device for recharging with solid charging material can also be a sluice with a material chamber that can be moved by a slide cylinder, on the open ends of which are alternately opening and closing slides attached in an upper and lower position of the material chamber, and with a feed device for the upper one that is controlled by a displacement sensor Have position of the material chamber and a gas pressure control device.
- a support rail partially immersed in the melt and connected to the lock can be provided for the self-locking support of the solid charging material.
- the lock is preferably equipped with a temperature-controlled heating device for the charging material.
- a device for recharging with liquid charging material can expediently be constructed in such a way that it consists of a melt vessel which can be coupled to a filling tube of the metering furnace 8 exists, which is equipped with a cooperating with the level sensor conveyor for the melt.
- the riser pipe is also equipped with a temperature-controlled heating device for the melt.
- the dosing furnace can consist of a steel crucible as a basic element. For safety reasons, this can be surrounded by a melt collecting trough, the free volume of which is able to take up the possibly flowing melt from the dosing furnace.
- induction heating it is also possible to backfill a, for example, metallic crucible with a ceramic mass, which ensures good support and additional protection in the event of a crucible leak.
- the riser pipe should have a volume of at least one gross cast and usefully an inner diameter of at least 30 mm. It should also be connected directly from below to the filling chamber of the die casting machine or die. This design guarantees low-turbulence conveying of the melt with a short transport route and thus ensures a short dosing time with low temperature losses.
- the construction of the dosing furnace can be designed so that the riser pipe opens into a prechamber which is connected to the filling chamber of the die casting machine via a short pipe.
- the prechamber can have an overflow edge, so that it only picks up a defined amount of melt.
- the riser pipe is connected from below to the filling chamber of a die casting machine and has a second connecting channel opening into the filling chamber at the intended level, via which excess melt is automatically returned to the prechamber.
- a central furnace control e.g. B. in the form of a programmable logic controller, a central controller of the die casting machine for transferring process parameters is connected via a signal line to this central furnace controller.
- FIG. 1 shows a section through a dosing furnace with recharging in the form of bolts
- FIG. 4 shows a section through a dosing furnace and a transport vessel for liquid recharging
- Fig. 6 shows a variant of the coupling of metering furnace and filling chamber of a die casting machine
- Fig. 7 shows a second variant of the coupling of dosing furnace and filling chamber of a die casting machine
- bolt-shaped alloy material 1 is pushed through a lock seal 4 of a lock 5 with a feed device 3 controlled by a displacement sensor 2.
- the lock 5 is equipped with a heating device 6 for preheating the bolt-shaped alloy material 1.
- a temperature sensor 7 measures the temperature of the alloy material 1, which is fed to a controller 8 for regulating the heating device 6.
- a melt bath 10 which is heated with resistance heating elements 11.
- a temperature sensor 12 in the melt bath 10 gives a measurement signal for the heating output control 13.
- the alloy material 1 is slowly fed into the melt bath 10 via a support rail 14, whereby it melts in the upper bath area. 10
- the bath surface 15 is protected against erosion and oxidation by a protective gas 16.
- the protective gas 16 is constantly under a slight excess pressure.
- a fill level sensor 17 measures the height of the bath surface 15 and triggers recharging of the feed device 3 when a minimum value is exceeded.
- the connection to a casting device is made by a riser pipe 18.
- the riser pipe 18 is also heated by a heating device 19, which is regulated by means of a thermocouple 20 and a regulator 21 and a desired casting temperature in the melt sets.
- the dosing furnace is protected with insulation 22 against large radiation losses to the outside. If there is a leak in the crucible 9, the melt flows into a collecting trough 23 surrounding the crucible 9.
- the gas pressure in the protective gas 16 above the bath surface 15 is measured with a gas pressure sensor 24 and regulated with a gas pressure regulator 25 via the gas control valve 26, the gas pressure regulator 25 being connected to the level of the bath surface 15 measured with the fill level sensor 17, since the gas pressure above the bath surface 15 is influenced by this.
- the gas pressure is now increased in accordance with the metered quantity and the delivery head to the pouring device, specifically by the pressure difference that corresponds to the height difference between the bath level and a fill level setpoint in the pouring device.
- the metering accuracy can optionally be increased by feedback from a level sensor in the casting device to the gas pressure regulator 25.
- the pouring device 27 was also filled with protective gas 16, so that the entire dosing and pouring process takes place under protective gas. 11
- FIG. 2 shows a metering furnace with inductively heated crucible 9.
- the melt reaches the interface to the casting device 27 via a vertical riser pipe 18, which is essentially heated via the metering furnace, so that the additional heating device 19 can be dimensioned correspondingly smaller.
- the level of the melt in the riser 18 is measured by means of a level sensor 56 and regulated via the gas pressure in the metering furnace in such a way that it is approximately the same each time the melt is fed to the casting device.
- An induction heater 28 is controlled by means of a temperature sensor 12 and the heating power control 13 and allows flexible power input by means of a variable frequency and the control of independent coils.
- the inductive force effect ensures good mixing of the molten bath 10, as a result of which segregations and deposits on the bottom of the crucible 9 are reliably avoided.
- the crucible 9 is supported with the aid of a ceramic intermediate layer 29, which additionally offers good protection in the event of a crucible leak.
- the alloy material 1 which is in the form of a mass in this case, is preheated to a defined temperature by means of a separate heating device 6.
- the pigs (possibly several next to each other) are inserted linearly into the lock 30.
- a slide cylinder 31 is in the lower position so that a slide 32 opens and a slide 33 closes.
- the air introduced with the pigs is displaced to the outside by a short protective gas purging.
- the pressure is raised to the same level as in the furnace chamber with the aid of a gas pressure regulator 34 and a gas pressure valve 35 for the lock 30.
- the slide cylinder 31 moves into the upper position, so that the slide 33 is opened.
- the feed device 3 pushes the ingot on the support rail 14 into the melting zone on the bath surface 15.
- the entire lock 30 can be uncoupled from a mounting flange, so that ingots can be introduced very quickly into the unpressurized furnace.
- the geometry of the lock 30 is designed so that hot protective gas 16 remains trapped in the upper part and only a small amount of air is introduced from the outside when the pigs are inserted.
- control of the process parameters and the dosing take place in a manner similar to that in the exemplary embodiment according to FIG. 1.
- FIG. 3 shows the coupling of the control loops for the temperature T m , Tn of the alloy material 1, the melt temperature Ts, the casting temperature T g , the bath height H and the gas pressure P g of the protective gas 16 for the embodiment according to FIG. 1.
- the transition functions are general marked with F.
- the strongly changing melt temperature T s which causes a different expansion of the melt bath 10, acts as a disturbance variable on the bath height H.
- the melt temperature Ts is therefore regulated within narrow limits by means of the heating power controller 13. 13
- the bath height H influences the gas pressure P g of the protective gas 16 in the furnace chamber. This is measured with the gas pressure sensor 24 and controlled via the gas control valve 26 and the gas pressure regulator 25, a disturbance variable being applied in such a way that the melt in the riser pipe 18 is the same before each metering process, regardless of the bath height H of the melt bath 10 in the crucible 9 is.
- the gas pressure P g is then temporarily increased in accordance with the required delivery head to the pouring device 27 and the metered quantity md.
- the metering accuracy can be increased by reporting the metered amount of melt md to the gas pressure regulator 25.
- the melt temperature Ts also acts as a disturbance variable on the gas pressure P g in the furnace chamber, so that the smallest possible fluctuations in the melt temperature Ts are desired.
- the casting temperature T g can be measured before or after the interface to the casting device 27 and is set precisely by the controller 8 of the heating device 19, the input variable being the melt temperature Ts in the melt bath 10. This results in the melt bath 10 as a complex function F from the thermal energy introduced, depending on the regulated heating power of the temperature T m or T 1 of the alloy material 1 and the charging quantities m or fl used.
- the temperature T m of the solid alloy material 1 is set with the heating controlled by the controller 8 in the preheating process, starting from the ambient temperature T mo .
- FIG. 4 shows a side section of a transport vessel 37, from which the melt bath 10 below the bath surface 15 can be re-changed with a melt quantum via a filler pipe 38.
- a delivery channel 39 from the transport vessel 37 is tightly connected to the filler pipe 38 by a releasable coupling 40.
- liquid can be recharged until the fill level sensor 17 in the melt bath 10 of the dosing furnace switches off at maximum bath height H. 14
- the transport vessel 37 can be kept at a defined temperature T A with a resistance-heated immersion heater 42 with the aid of a heating control 43 and a thermocouple 44.
- Fig. 5 shows an example of the interaction of the dosing furnace with a downstream die casting device.
- a certain amount of magnesium is melted in the pressure-tightly encapsulated crucible 9 of a dosing furnace.
- the crucible 9 is connected via the riser pipe 18, which starts in the lower region of the molten bath 10, to the filling chamber 45 of a die casting machine, to which a die 46 is connected.
- the space above the melt bath 10 is filled with argon, which is removed from a storage vessel 47.
- the filling chamber 45 and the die 40 are also filled with argon.
- the gas pressure in the metering furnace is increased, so that the argon is displaced from the filling chamber 45 into the die 46.
- the piston of the die casting machine first moves over the mouth of the riser pipe 18 in the filling chamber 45, after which the gas pressure in the metering furnace is reduced at least until the melt level in the riser pipe 18 has reached its initial state again.
- the melt is then conveyed into the die 46 by the piston and the argon is displaced from the die 46, the filling chamber 45 being filled with argon immediately after the shot has been fired, so that the bath level in the riser pipe 18 does not come into contact with air. After the casting has been removed from the die 46, the latter is again filled with argon.
- All control processes are carried out by a central furnace controller 48, which is also connected to a central controller 49 of the die casting machine via a signal line 50 for transferring process parameters.
- the central furnace controller 48 which can be implemented by a programmable logic controller, controls the timing of all processes very flexibly, e.g. B. by programmed "if - then" conditions, so that in the set-up phase when casting weight, solidification times, mold closing times, charging times, batch formats, dosing times required 15
- Amount of funding etc. are fixed, individual coordination of the individual control loops can be made.
- a charging process is triggered after each or every nth metering process.
- a charging process is triggered when the mold is opened, provided the bath level is not above the maximum value or the melt temperature Ts is too low.
- FIG. 6 shows a variant of the coupling between the die casting machine and the riser pipe 18.
- a prechamber 51 Shortly below the mouth of the riser pipe 18 is a prechamber 51 which is connected to the filling chamber 45 via a connecting channel 53.
- the connecting channel 53 opens into the filling chamber 45 in such a way that too much dosed melt automatically flows back into the pre-chamber 51 after the piston of the die casting machine has passed over the mouth of the riser pipe 18, at which moment the gas pressure in the dosing furnace is reduced.
- the mouth of the connecting channel 53 in the filling chamber 45 must therefore be placed at a point at which the fill level corresponds as exactly as possible to the metered amount of a shot.
- FIG. 7 shows a further variant of the coupling between the die casting machine and the riser pipe 18.
- the riser pipe 18 is connected to a heated, self-contained prechamber 51 via an overflow edge 54.
- the volume of the pre-chamber 51 corresponds exactly to a shot quantity.
- a tube 52 extending from the filling chamber 45 of the die casting machine plunges into the pre-chamber 51.
- the coupling to the filling chamber 45 is therefore somewhat flexible. The filling of the filling chamber 45 takes place by generating a pressure difference between the 16
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU44966/99A AU4496699A (en) | 1998-04-27 | 1999-04-15 | Method for processing a molten metal mass, especially a molten light metal mass,and a dosing furnace which is encapsulated and which can be pressurized by prot ective gas |
DE59904455T DE59904455D1 (de) | 1998-04-27 | 1999-04-15 | Verfahren zum verarbeiten einer metallschmelze, insbesondere einer leichtmetallschemelze, sowie gekapselter und mit schutzgas beaufschlagbarer dosierofen |
DE19980734T DE19980734D2 (de) | 1998-04-27 | 1999-04-15 | Verfahren zum Verarbeiten einer Metallschmelze, insbesondere einer Leichtmetallschmelze, sowie gekapselter und mit Schutzgas beaufschlagbarer Dosierofen |
JP2000545662A JP2002512889A (ja) | 1998-04-27 | 1999-04-15 | 金属溶湯、特に軽金属溶湯の処理方法ならびに保護ガスにより加圧された密閉形計量保持炉 |
AT99927667T ATE233627T1 (de) | 1998-04-27 | 1999-04-15 | Verfahren zum verarbeiten einer metallschmelze, insbesondere einer leichtmetallschemelze, sowie gekapselter und mit schutzgas beaufschlagbarer dosierofen |
EP99927667A EP1076603B1 (de) | 1998-04-27 | 1999-04-15 | Verfahren zum verarbeiten einer metallschmelze, insbesondere einer leichtmetallschemelze, sowie gekapselter und mit schutzgas beaufschlagbarer dosierofen |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19818835 | 1998-04-27 | ||
DE19845528A DE19845528A1 (de) | 1998-04-27 | 1998-10-02 | Verfahren zum Verarbeiten einer Metallschmelze, insbesondere einer Leichtmetallschmelze, sowie gekapselter und mit Schutzgas beaufschlagbarer Dosierofen |
DE19845528.3 | 1998-10-02 | ||
DE19818835.8 | 1998-10-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999055478A1 true WO1999055478A1 (de) | 1999-11-04 |
Family
ID=26045797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/001131 WO1999055478A1 (de) | 1998-04-27 | 1999-04-15 | Verfahren zum verarbeiten einer metallschmelze, insbesondere einer leichtmetallschmelze, sowie gekapselter und mit schutzgas beaufschlagbarer dosierofen |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1076603B1 (de) |
JP (1) | JP2002512889A (de) |
AT (1) | ATE233627T1 (de) |
AU (1) | AU4496699A (de) |
DE (1) | DE19980734D2 (de) |
WO (1) | WO1999055478A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012007363B3 (de) * | 2012-04-12 | 2013-06-20 | Handtmann Leichtmetallgießerei Annaberg GmbH | Vorrichtung zur Steigrohr-Vorwärmung für Dosieröfen |
CN113930738A (zh) * | 2020-06-29 | 2022-01-14 | 宝山钢铁股份有限公司 | 一种真空镀膜用的金属蒸汽调制装置及其调制方法 |
CN114318200A (zh) * | 2021-12-29 | 2022-04-12 | 北华航天工业学院 | 长材处理装置及基于该装置的热镀生产线和热镀方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE389483T1 (de) * | 2002-09-25 | 2008-04-15 | Frech Oskar Gmbh & Co | Schutzgaseinrichtung für druckgussmaschinen |
DE102012108511A1 (de) * | 2012-09-12 | 2014-03-13 | Ks Aluminium-Technologie Gmbh | Dosierofen für eine Druckgussanlage und Verfahren zum Dosieren von Schmelze in eine Gießform mit einem derartigen Dosierofen |
CN108788083A (zh) * | 2018-07-27 | 2018-11-13 | 合肥和瑞机械制造有限公司 | 一种汽车配件生产用高精度压铸模具 |
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DE553741C (de) * | 1930-08-29 | 1932-06-30 | Elektronmetall G M B H | Verfahren und Vorrichtung zur stetigen automatischen Beschickung von Schmelzanlagen |
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DE2041588A1 (de) * | 1970-08-21 | 1972-03-09 | Kahn Friedhelm Dipl Ing | Schmelz- und Giessverfahren mit Druckanwendung und Einrichtung zur Durchfuehrung des Verfahrens |
DE3909136A1 (de) * | 1986-06-10 | 1989-11-02 | Albert Braach Gmbh & Co Kg Mod | Verfahren und vorrichtung zum giessen von formteilen, beispielsweise kraftfahrzeugraedern, aus aluminium, magnesium und dergleichen leichtmetallen in niederdruckgiessmaschinen |
DE4029386A1 (de) * | 1990-09-12 | 1992-03-19 | Strikfeldt & Koch | Verfahren und vorrichtung zum dosieren von fluessigkeiten, insbesondere von geschmolzenem metall |
DE4203193A1 (de) * | 1992-02-05 | 1993-08-12 | Inst Werkstoffkunde Uni Hannov | Verfahren und vorrichtung zur handhabung von magnesium- und magnesium-legierungsschmelzen |
DE4403285A1 (de) * | 1994-01-31 | 1995-08-03 | Alexander Fischer | Dosierofen |
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1999
- 1999-04-15 WO PCT/DE1999/001131 patent/WO1999055478A1/de active IP Right Grant
- 1999-04-15 AT AT99927667T patent/ATE233627T1/de not_active IP Right Cessation
- 1999-04-15 JP JP2000545662A patent/JP2002512889A/ja active Pending
- 1999-04-15 AU AU44966/99A patent/AU4496699A/en not_active Abandoned
- 1999-04-15 DE DE19980734T patent/DE19980734D2/de not_active Ceased
- 1999-04-15 EP EP99927667A patent/EP1076603B1/de not_active Expired - Lifetime
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Cited By (5)
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DE102012007363B3 (de) * | 2012-04-12 | 2013-06-20 | Handtmann Leichtmetallgießerei Annaberg GmbH | Vorrichtung zur Steigrohr-Vorwärmung für Dosieröfen |
CN113930738A (zh) * | 2020-06-29 | 2022-01-14 | 宝山钢铁股份有限公司 | 一种真空镀膜用的金属蒸汽调制装置及其调制方法 |
CN113930738B (zh) * | 2020-06-29 | 2023-09-12 | 宝山钢铁股份有限公司 | 一种真空镀膜用的金属蒸汽调制装置及其调制方法 |
CN114318200A (zh) * | 2021-12-29 | 2022-04-12 | 北华航天工业学院 | 长材处理装置及基于该装置的热镀生产线和热镀方法 |
CN114318200B (zh) * | 2021-12-29 | 2023-08-15 | 北华航天工业学院 | 长材处理装置及基于该装置的热镀生产线和热镀方法 |
Also Published As
Publication number | Publication date |
---|---|
AU4496699A (en) | 1999-11-16 |
ATE233627T1 (de) | 2003-03-15 |
EP1076603A1 (de) | 2001-02-21 |
EP1076603B1 (de) | 2003-03-05 |
DE19980734D2 (de) | 2001-08-02 |
JP2002512889A (ja) | 2002-05-08 |
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