EP1442810A1 - Verfahren und Vorrichtung zur Herstellung von Gussstücken aus einer Legierung durch Spritzgiessen - Google Patents
Verfahren und Vorrichtung zur Herstellung von Gussstücken aus einer Legierung durch Spritzgiessen Download PDFInfo
- Publication number
- EP1442810A1 EP1442810A1 EP04000321A EP04000321A EP1442810A1 EP 1442810 A1 EP1442810 A1 EP 1442810A1 EP 04000321 A EP04000321 A EP 04000321A EP 04000321 A EP04000321 A EP 04000321A EP 1442810 A1 EP1442810 A1 EP 1442810A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- feed opening
- main component
- material feed
- magnesium
- 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
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 42
- 239000000956 alloy Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims description 23
- 238000005266 casting Methods 0.000 title claims description 9
- 238000001746 injection moulding Methods 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 23
- 238000002844 melting Methods 0.000 claims abstract description 19
- 230000008018 melting Effects 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 150000002739 metals Chemical class 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 33
- 239000007769 metal material Substances 0.000 claims description 26
- 238000003860 storage Methods 0.000 claims description 16
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical group [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 13
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 13
- 229910052749 magnesium Inorganic materials 0.000 claims description 13
- 239000011777 magnesium Substances 0.000 claims description 13
- 239000011261 inert gas Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 10
- 229910052791 calcium Inorganic materials 0.000 description 10
- 239000011575 calcium Substances 0.000 description 10
- 239000011701 zinc Substances 0.000 description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 9
- 238000005275 alloying Methods 0.000 description 9
- 229910052725 zinc Inorganic materials 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 239000010953 base metal Substances 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 4
- 229910052684 Cerium Inorganic materials 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 4
- 238000004512 die casting Methods 0.000 description 4
- 229910052727 yttrium Inorganic materials 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 241000237858 Gastropoda Species 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229910052790 beryllium Inorganic materials 0.000 description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 229910052735 hafnium Inorganic materials 0.000 description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000005272 metallurgy Methods 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 3
- -1 B. AZ91 Chemical compound 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000011236 particulate material Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910016943 AlZn Inorganic materials 0.000 description 1
- 229910000967 As alloy Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- RZJQYRCNDBMIAG-UHFFFAOYSA-N [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] Chemical compound [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] RZJQYRCNDBMIAG-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Images
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
- B22D17/007—Semi-solid pressure die casting
-
- 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
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/2038—Heating, cooling or lubricating the injection unit
-
- 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
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/2061—Means for forcing the molten metal into the die using screws
Definitions
- the invention relates to a method and Device for producing castings from a Alloy by injection molding according to the preamble of Claim 1. It also has a device for performing subject to this procedure.
- Such a method is already known (DE 199 07 118 C1).
- This becomes a particulate metallic Material e.g. B. a magnesium alloy that the Main component forms and dendritic properties has, the material feed opening on the upstream Fed to a thixo injection molding machine at the end of the screw, while the other metallic material, e.g. B. zinc or an AlZn alloy is fed in downstream.
- the extruder is made of magnesium alloy Solidus temperature heated so that it in the storage zone is in a thixotropic state. If a low melting metal, such as zinc, before the screw extruder is fed into the storage zone, it melts without itself mix homogeneously with the still solid magnesium alloy can. In addition, there are hardly any controllable sealing problems at the point of the zinc feed.
- Alloys are generally made by die casting.
- the Alloy is used in the form of casting compounds, by conventional melting metallurgy from the Alloy components can be obtained.
- the desired alloy must therefore be used for die casting be melted twice, namely once to Production of the casting compounds and the other in the Pressure casting plant.
- alloying elements There are also problems that result in compliance with the nominal alloy composition difficult or even is excluded. So is the problem of burning Applicability of alloying elements limited, the one have high oxygen affinity, e.g. B. Ca, Si, Hf, Y or Cerium.
- alloying elements that are characterized by their high vapor pressure have a tendency to evaporate, e.g. B. Zn.
- Other alloying elements are limited or not at all soluble in the base metal so that they float or close Sink ground. So z. B.
- Alloying elements also soluble, with a high Atomic weight, especially those with a one atomic weight many times higher than that of the base metal, tend to increase gravity, e.g. B. Zn.
- Another Limitation is the property of some in die casting Alloying elements, e.g. B. of calcium, the Increasing the tendency to crack hot.
- the object of the invention is an easy to carry out Method and device for producing Castings from a wide variety of alloys To make available.
- Thixo injection molding machine can be used, in which the Screw conveys the material mixture to a storage zone, in which the alloy formed with the screw that goes with it is formed axially back and forth, through which Eject nozzle into the injection mold with the mold cavity becomes.
- the housing of the thixo injection molding machine is made by a heater, for example heating tapes, on the required temperature warmed to the metallic At least partially melt materials.
- the at least two particulate metallic ones Materials can be two different alloys or an alloy and an unalloyed (pure) metal or two unalloyed (pure) metals.
- metals are to understand semimetals, such as boron or silicon.
- the partially melted state that the alloy passes through Heating and shearing with the screw in the storage zone can be achieved in that the as alloy used on a metallic material Temperature between the solidus and the liquidus temperature is heated, or if z. B. two unalloyed one another insoluble metals with different melting points that only the metal with the lower one is used Melting point is melted. According to the invention the at least two metallic materials also completely be melted, d. H. the as a metallic material Alloy used can also about the liquidus temperature warmed, or if pure as a metallic material unalloyed metals can be used, the metals also be melted completely.
- the particulate materials which are called granules or Powders are used according to the invention as Mixture of the material feed opening in the housing of the Screw extruder at the upstream end of the screw fed.
- the at least two metallic particulate Materials preferably have a similar shape and Size distribution on. So the middle one should Particle diameter of one material from that of the other not deviate more than 1: 5 to 5: 1 to separate submissions.
- the temperature of the screw extruder can vary Rise the material feed opening towards the nozzle. she can however, in front of the storage zone also higher than in the Storage zone. So the storage zone is preferred kept at a temperature that is optimal Spray temperature corresponds, but also lower than the temperature for melting can be.
- a metallic material Main component and the at least other metallic Material is the secondary component.
- the main component can Magnesium or a magnesium alloy, e.g. B. AZ91, AM60 or AS41.
- the first material from which the main component is formed is, can via a metering device, preferably a Dosing screw, the material feed opening from one Feed hopper or the like storage container supplied become.
- This material can be used in the storage container can be supplied with a suction conveyor, for example.
- the conveying characteristic of the dosing screw i.e. H. the Mass flow of this material depending on the Screw speed must be used to determine the amount to be added Quantity can be determined.
- the second material i.e. the secondary component
- it can z. B. act as a pure element.
- the second material can also from a hopper or the like Storage container via a metering device, preferably a screw feeder or a chamber feeder, the Material feed opening are fed.
- a metering device preferably a screw feeder or a chamber feeder
- the funding characteristic this second metering device must also be determined become.
- inert gas that is fed to the material feed opening is the entry of air into the screw extruder prevented. This can be done at the material feed opening Approach should be provided with an inert gas supply is provided to fill the batch with inert gas.
- Inert gas is preferably used because it is an argon has higher density than air and therefore the air from the Approach displaced.
- the approach can do this except for the inert gas supply and the Dosing device outlet openings closed be trained.
- Alloy elements are alloyed, which in the conventional smelting metallurgical processes for burning problems due to the high melting temperature and / or the high Lead to affinity for oxygen, for example calcium, Silicon, hafnium, yttrium and cerium.
- the oxygen affinity of the alloyed metallic material can be larger than that of magnesium.
- the oxygen affinity of a metal generally corresponds to its normal potential in the Voltage range.
- According to the invention can easily Alloy elements alloyed with a normal potential that is more negative than -2 volts, especially Alloy elements with a normal potential, the more negative than that of magnesium (-2.37 V), for example Calcium, hafnium, yttrium or cerium.
- Alloy elements can also be alloyed in accordance with the invention which, due to their high vapor pressure, tend to evaporate, e.g. B. sodium, potassium, zinc. So zinc has z. B. a vapor pressure of about 100 mbar at 620 ° C and about 1000 mbar at 900 ° C. According to the invention can therefore easily Alloy elements with a vapor pressure of more than 10 mbar at 600 ° C or more than 100 mbar at 900 ° C be used. So the alloyed metal Material at a temperature at which the Main component in the partially liquid or liquid state has a higher vapor pressure than magnesium.
- alloying elements use that limited or not at all in the Base metal are soluble so that they float or close Sink ground. So magnesium as the base metal z.
- B. Zirconium, titanium and silicon are alloyed up to that a usual temperature in melting metallurgy of 1000 ° C a solubility of significantly less than 10% by weight in molten magnesium, iron, chromium, Molybdenum, vanadium, beryllium and boron, which are in magnesium are insoluble.
- alloying elements can also be used soluble, with a high atomic weight, especially those with an atomic weight many times higher than that Base metal can be used without a Gravity escalation occurs.
- Base metal can be used without a Gravity escalation occurs.
- alloying elements can also be used soluble, with a high atomic weight, especially those with an atomic weight many times higher than that Base metal can be used without a Gravity escalation occurs.
- Depending on the number of through metallographic examination of detectable phases or Structural components can be single-phase according to the invention (homogeneous) or multi-phase alloys are created.
- the alloy with a lower Temperature can be supplied to the tool than at Die casting, the tendency to hot cracks and the tendency of To glue alloy, in particular by certain Alloying elements such as B. calcium is caused, reduced.
- magnesium or a magnesium alloy than Main component can be used with it
- Magnesium-based alloys according to the invention without the in the existing limitations of melting metallurgy following alloying elements as secondary components are produced: alkali and alkaline earth metals, e.g. B. Sodium, potassium, lithium, strontium, beryllium and calcium, Group 2B elements of the periodic table, such as zinc Group 3, such as boron, Group 3A, such as yttrium or the Lantanides, such as cerium, the group 4, such as silicon, the group 4A, such as titanium, zircon or hafnium, group 5A, such as Vanadium, Group 6A, such as chromium or molybdenum, as well Ferrous metals, especially iron.
- alkali and alkaline earth metals e.g. B. Sodium, potassium, lithium, strontium, beryllium and calcium
- Group 2B elements of the periodic table such as zinc Group 3, such as boron
- Group 3A such
- the one metallic material while the main component the at least one other metallic material Auxiliary component forms.
- the weight percentage of Main component is at least 50%, preferably 80% and more of the alloy produced.
- the maximum temperature of the screw extruder is like this set that as an alloy Main component above the solidus temperature, especially between the solidus and the Liquidus temperature of the alloy is and at a pure Metal as the main component above the melting point of the Metal.
- the main component preferably has one Solidus temperature or a melting point that below the solidus temperature or the melting point of the at least one minor component.
- the screw extruder is according to the invention Temperature above the solidus temperature or the Melting temperature of the main component warmed and thus the Secondary component solved in the main component. Due to the strong mixing in the screw extruder can according to the invention also with a high melting point Secondary component at a relatively low Operating temperature of the screw extruder a homogeneous, single-phase melt can be obtained.
- the material feed opening of a screw extruder with a dosing screw 95 parts by weight each Magnesium alloy AM60, as granules of quality TIX06 and 5 parts by weight of zinc as spherical granules a particle size of ⁇ 2 mm metered.
- the temperature of the extruder housing was downstream of the Feed opening set to a maximum of 620 °. there has been a obtain homogeneous single-phase melt, d. H. that had zinc in the liquid phase of the predominantly melted Magnesium alloy dissolved homogeneously.
- Example 1 was repeated except that 90 Parts by weight of the magnesium alloy and 10 parts by weight Zinc were used. It also became a homogeneous one obtained single-phase alloy.
- Example 1 was repeated except that 97 Parts by weight of the magnesium alloy and 3 parts by weight Calcium have been used. It became a homogeneous single phase Alloy obtained through high creep resistance distinguished.
- the screw extruder then has a housing 1 Screw 2, which is driven by a drive unit 3 is driven. There is also a pressure accumulator 4 provided by which the snail 2 with a not shown pistons are pushed axially back and forth can. In the drawing the screw 2 is in position after ejecting the alloy from the storage zone shown. When the snail is withdrawn, arises between it and the nozzle 5, the storage zone in which the alloy collects through the nozzle 5 in the Mold cavity 6 of the tool 7 is ejected to the to form a casting, not shown.
- the housing 1 has at the upstream end of the Check 2 a material feed opening 8 with a neck-shaped approach 9 is provided, which at its of the feed opening 8 facing away from the end is closed.
- dosing screws 10, 11, connected With a dosing screw 10 is from a feed hopper 12, the metallic material A Material feed opening 8 metered. With a Suction conveyor 13 it is the hopper 12th fed. With the other dosing screw 11 that is metallic material B from a hopper 14 of the Material feed opening 8 metered.
- the approach 9 has a Inert gas supply 17. With heating tapes 18 that away from the material feed opening 8 on the conveyor Housing 1 and the nozzle 5 are arranged, the extruder heated.
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Abstract
Description
Claims (16)
- Verfahren zur Herstellung von Gussstücken aus einer Legierung durch Spritzgießen, bei dem wenigstens zwei teilchenförmige metallische Materialien unterschiedlicher Zusammensetzung, die aus wenigstens zwei Legierungen oder wenigstens einer Legierung und wenigstens einem reinen Metall oder wenigstens zwei reinen Metallen bestehen, einem Schneckenextruder mit einem mit einer Heizung und am förderaufwärtigen Ende der Schnecke mit einer Materialzufuhröffnung versehenen Gehäuse zugeführt, im Schneckenextruder zumindest teilweise aufgeschmolzen und aus einer Speicherzone über eine Düse ausgestoßen werden, dadurch gekennzeichnet, dass die teilchenförmigen metallischen Materialien unterschiedlicher Zusammensetzung von separaten Vorratsbehältern der einen Materialzufuhröffnung im Gehäuse des Extruders getrennt so zudosiert werden, dass sie sich erst an der Materialzufuhröffnung vermischen und die Temperatur des Schneckenextruders an der Materialzufuhröffnung unter dem Schmelzpunkt des wenigstens einen Metalls oder der wenigstens zwei Metalle oder unter der Solidustemperatur der wenigstens einen Legierung oder der wenigstens zwei Legierungen gehalten wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass ein metallisches Material die Hauptkomponente und das wenigstens ein anderes metallisches Material die Nebenkomponente bildet.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass im flüssigen Zustand bis 1000 °C die Nebenkomponente in der Hauptkomponente keine Löslichkeit besitzt.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass im flüssigen Zustand bis 1000 °C die Nebenkomponente in der Hauptkomponente eine Löslichkeit von maximal 10 Gew.-% aufweist.
- Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Hauptkomponente Magnesium oder eine Magnesiumlegierung ist
- Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens ein metallisches Material eine höhere Sauerstoffaffinität als Magnesium aufweist.
- Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens ein metallisches Material bei einer Temperatur, bei der sich die Hauptkomponente im teilflüssigen oder flüssigen Zustand befindet, einen höheren Dampfdruck als Magnesium aufweist.
- Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens eines der metallischen Materialien ein Metall ist oder enthält, dessen Atomgewicht mindestens doppelt so groß, wie das der Hauptkomponente der Legierung ist.
- Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass an der Materialzufuhröffnung ein Inertgas zugeführt wird.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass als Inertgas Argon verwendet wird.
- Vorrichtung zur Durchführung des Verfahrens nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass an der einen Materialzufuhröffnung (8) im Gehäuse (1) des Extruders ein Ansatz (9) vorgesehen ist, dem die wenigstens zwei metallischen Materialien (A, B) über jeweils eine Dosiereinrichtung zugeführt werden.
- Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass wenigstens eine Dosiereinrichtung durch eine Dosierschnecke (10, 11) gebildet wird.
- Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass der Ansatz (9) mit einer Inertgaszuführung (17) versehen ist.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass die Inertgaszuführung (17) an dem Ansatz (9) unterhalb der Eintrittsöffnung (14, 15) der Dosierschnecke (10, 11) angeordnet ist.
- Vorrichtung nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, dass der Ansatz (9) geschlossen ausgebildet ist.
- Vorrichtung nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, dass die Heizung (18), mit der das Gehäuse (1) versehen ist, förderabwärts der Materialzuführöffnung (8) angeordnet ist.
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DE10301081 | 2003-01-14 | ||
DE10301081 | 2003-01-14 | ||
DE10301363 | 2003-01-16 | ||
DE10301363A DE10301363A1 (de) | 2003-01-14 | 2003-01-16 | Verfahren und Vorrichtung zur Herstellung von Gussstücken aus einer Legierung durch Spritzgießen |
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EP1442810A1 true EP1442810A1 (de) | 2004-08-04 |
EP1442810B1 EP1442810B1 (de) | 2005-07-20 |
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US7694715B2 (en) | 2007-01-23 | 2010-04-13 | Husky Injection Molding Systems Ltd. | Metal molding system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0910910A (ja) * | 1995-06-29 | 1997-01-14 | Japan Steel Works Ltd:The | 軽合金射出材料の射出成形方法および射出成形機 |
DE19907118C1 (de) * | 1999-02-19 | 2000-05-25 | Krauss Maffei Kunststofftech | Spritzgießvorrichtung für metallische Werkstoffe |
JP2001062555A (ja) * | 1999-08-30 | 2001-03-13 | Japan Steel Works Ltd:The | 軽合金射出成形機の材料供給方法及びその装置 |
US6299665B1 (en) * | 1999-07-06 | 2001-10-09 | Thixomat, Inc. | Activated feedstock |
EP1281459A2 (de) * | 2001-07-19 | 2003-02-05 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Vorrichtung zum Thixospritzgiessen zur Herstellung von Metallteilen |
-
2004
- 2004-01-09 DE DE200450000022 patent/DE502004000022D1/de not_active Expired - Lifetime
- 2004-01-09 EP EP20040000321 patent/EP1442810B1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0910910A (ja) * | 1995-06-29 | 1997-01-14 | Japan Steel Works Ltd:The | 軽合金射出材料の射出成形方法および射出成形機 |
DE19907118C1 (de) * | 1999-02-19 | 2000-05-25 | Krauss Maffei Kunststofftech | Spritzgießvorrichtung für metallische Werkstoffe |
US6299665B1 (en) * | 1999-07-06 | 2001-10-09 | Thixomat, Inc. | Activated feedstock |
JP2001062555A (ja) * | 1999-08-30 | 2001-03-13 | Japan Steel Works Ltd:The | 軽合金射出成形機の材料供給方法及びその装置 |
EP1281459A2 (de) * | 2001-07-19 | 2003-02-05 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Vorrichtung zum Thixospritzgiessen zur Herstellung von Metallteilen |
Non-Patent Citations (2)
Title |
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PATENT ABSTRACTS OF JAPAN vol. 1997, no. 05 30 May 1997 (1997-05-30) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 20 10 July 2001 (2001-07-10) * |
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EP1442810B1 (de) | 2005-07-20 |
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