WO2001038021A1 - Method and device for the production of light-metal pellets - Google Patents
Method and device for the production of light-metal pellets Download PDFInfo
- Publication number
- WO2001038021A1 WO2001038021A1 PCT/DE2000/004134 DE0004134W WO0138021A1 WO 2001038021 A1 WO2001038021 A1 WO 2001038021A1 DE 0004134 W DE0004134 W DE 0004134W WO 0138021 A1 WO0138021 A1 WO 0138021A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pellets
- heat sinks
- light metal
- gap
- metal melt
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0602—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a casting wheel and belt, e.g. Properzi-process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D3/00—Pig or like casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
Definitions
- the invention relates to a method according to the preamble of claim 1 and an apparatus for performing the method.
- pellets is not only understood to mean particles which are produced from a solid primary material, eg. B. sintered bodies which were produced from powder, but the term pellets used here in particular also includes particles which were produced from liquid material.
- pellet is used according to the invention, which has a much more uniform shape. The following deals specifically with the production of magnesium pellets, but the invention is not restricted to the material magnesium. If it is in the workpieces to be made from the pellets, e.g. B. cast or injection-molded workpieces to heavy-duty or heavy-duty parts, the light metal reinforcing materials can be added, such as fibers, particles or similar additives, depending on
- Purpose for example, to improve the abrasion, fracture, bending or vibration resistance of the workpiece.
- the workpiece is weakened excessively if these additives are distributed unevenly in the workpiece and undesirable defects occur.
- the invention has for its object to improve a generic method in such a way that the achievement of as uniform as possible properties of the workpiece to be produced from the pellets is reliably supported, and to specify a suitable device.
- the invention proposes that fibers, particles or similar additives be added to the light metal melt, so that the additives are not only added in an injection or casting mold, but rather the pellets already contain the additives when they are processed further , This guarantees an even distribution of the additives, which helps to avoid missing additives in the workpiece.
- Crushability Pellets made with precise dimensions can be. This can be done by producing rod or wire material called "spaghetti" with very small cross-sectional dimensions.
- a body emerging from the heat sinks is first produced, which consists of coherent pellets, and that this body is separated into the individual pellets only later.
- space-saving transport of the pellets is possible by combining them into a waffle, mat or board, or into a rolled-up band.
- an outer packaging, as used for separate pellets z. B. is required as a box or sack.
- precise metering of the connected pellets when they are added to a processing machine is possible, for example by unrolling the strip in pellets or by feeding the board in steps.
- the separation into the individual, separated pellets can be done spatially and temporally spaced from the production of such bodies, eg. B. in a special shredding system, which is connected upstream of the melting unit of a processing machine, or the shredding can be carried out by inserting the sheet or the belt into the processing machine and moving parts of the processing machine, eg. B. is broken up into the individual pellets by a screw conveyor provided there, which is facilitated by the lines of weakness.
- the light metal melt is guided between two heat sinks, the heat sinks forming a narrow gap where the cooling effect - based on the amount of melt adjacent to the heat sink - is particularly intense and where the light metal can be shaped or cut. At least on the surface, the solidification of the Material so far that a closed skin is created and consequently a shape can take place.
- the further solidification can take place by cooling in air, possibly supported by blowing with compressed air, or it can take place in that the at least partially solidified material is led into a cooling liquid or is sprinkled or sprayed with a cooling liquid.
- a particularly intensive cooling can be provided in order to deliberately make the material as brittle as possible and thereby facilitate later breaking if the pellets are to be initially produced as one body, as already mentioned.
- the heat sinks are advantageously movable synchronously, so that the light metal does not have to be brought about under friction between the heat sinks, but at the same time the heat sinks also represent a transport device for the light metal.
- a receiving space for the light metal melt is initially created, which subsequently leads to the gap mentioned.
- the shape of the liquid or partially solidified light metal melt or the complete separation of the at least partially solidified or already completely solidified light metal can take place in the gap.
- the heat sinks can advantageously be designed as two adjacent wheels or rollers which are oriented with their peripheral surfaces close to one another or even touch.
- a filling funnel is formed between the two heat sinks, so that the liquid magnesium melt can be added to this filling funnel in one operation, from there it is guided into the gap between the two heat sinks by movement of the two heat sinks and is shaped or cut there.
- the two surfaces of the heat sinks are brought apart again, so that the magnesium pellets fall downwards or a magnesium band provided only with lines of weakness is guided downwards, where it can be easily comminuted into pellets of standardized size ,
- the surface of the two rollers can be designed in such a way that both forms of material separations are provided: on the one hand, certain sections of the roller surface can enable the formation of a coherent band, a waffle, a mat or the like of pellets, with a proper separation subsequently - Web is provided in the surface of the roller, so that no
- Continuous belt or an endless mat or the like Is produced by pellets, but such mats, waffles, belts or the like. Are produced from a predetermined size.
- the separating web can cause a complete interruption of the material in the melt or the pellets produced, so that the dimensions of such pellet arrangements connected in this way are limited and predetermined.
- such coherent pellet arrangements with predetermined dimensions can enable easy further handling and, for example, automated packaging of such “clusters”, either individually or in groups within one packaging unit.
- a link chain-like or conveyor belt-like configuration of the two heat sinks can be provided, so that a comparatively long gap can be created in a simple manner, at which the two heat sinks are adjacent to one another, so that intensive cooling and Freezing effect is possible and a correspondingly high throughput can be achieved.
- Fig. 1 purely schematically, a first embodiment of an apparatus for producing magnesium pellets
- Fig. 2 also purely schematically, a second embodiment of an apparatus for producing magnesium pellets.
- the two cooling bodies 1 can be driven in opposite directions and synchronously with one another and can be cooled by a cooling device, not shown.
- the magnesium solidifies on the surface of the heat sink 1, and when the magnesium melt 3 has entered a gap 4, which is designed as a constriction between the two heat sinks 1, a narrow magnesium band 5 is produced, which is sufficiently solidified at least on its outer surface, to then be able to be withdrawn from the device.
- Weakening lines 6, which are embossed into the magnesium band 5, are indicated schematically on the magnesium band 5.
- These weakening lines 6 are indicated schematically by indicated webs 7, which are provided on the surfaces of the heat sink 1.
- Alloy composition of the melt and the intended use of the pellets can be selected.
- the weakening lines 6 define defined break lines of the magnesium band 5, so that the magnesium band 5 can be processed into pellets 8 of a predetermined size with little energy using a downstream breaking or deformation device, not shown.
- the magnesium band 5 merely provides a coherent arrangement of these
- the webs 7 protrude so far over the surface of the heat sink 1 that they with the
- the hollows of the two Kuhlkorper 1 act like casting molds, so that pellets are obtained in this way, the shape of which is predetermined by the shape of the troughs. It can also be provided that magnesium residues remain similar to a thin skin between the individual troughs, so that the pellets produced are still connected , when they come out of the device This relationship may be desirable if this is advantageous for further handling, for example if the pellets are to be fed to a casting machine individually in favor of a highly precise dosage. However, it can be provided that the Troughs formed pellets can immediately be removed from the device, so that they are immediately ready for processing and can either be packaged or processed in a casting machine
- FIG. 2 shows a second exemplary embodiment, in which the two heat sinks 1 are designed like link chains or conveyor belts and are guided around two deflecting rollers 9 in this way. A comparatively long gap 4 can be achieved.
- the device of FIG. 2 is arranged horizontally in order to increase the overall height save Deviating from this exemplary embodiment, however, a similarly designed device can also be arranged vertically, so that the guidance of the magnesium is assisted by gravity. As with the device in FIG. 1, the actual cooling device for the device in FIG. 2 is not shown in detail for reasons of clarity
- the long gap 4 of the exemplary embodiment of FIG. 2 enables a high throughput of this device due to the strong cooling effect that can be achieved.
- the heat sink 1 and thus the gap 4 can easily achieve the desired degree of partial or solidification of the magnesium be defined, while in the exemplary embodiment of FIG. 1 the circumferential speed of the two roller-shaped heat sink 1 is limited by the degree of solidification to be achieved.
- granular or powdery particles such. B. SiC, Al 2 O 3 - or carbon particles can be provided.
- the particles or fibers can be added by adding them to the melt or by guiding them within the melt to just before the gap 4, so that a defined one
- Fibers can optionally be added loosely as bulk material or as scrims, woven fabrics, knitted fabrics or in a comparable configuration, so that this orderly addition of the fibers ensures particularly uniform product properties of fiber-containing pellets.
- it can advantageously be provided to distribute the particles or fibers homogeneously at an external location, e.g. B. by inductive or mechanical stirring.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Continuous Casting (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR0007681-3A BR0007681A (en) | 1999-11-24 | 2000-11-21 | Process and device for the production of light metal pellets |
JP2001539619A JP2003514668A (en) | 1999-11-24 | 2000-11-21 | Method and apparatus for producing light metal pellets |
KR1020017009280A KR20010104699A (en) | 1999-11-24 | 2000-11-21 | Method and device for the production of light-metal pellets |
EP00989793A EP1146975A1 (en) | 1999-11-24 | 2000-11-21 | Method for the production of light-metal pellets |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19956479A DE19956479C2 (en) | 1999-11-24 | 1999-11-24 | Method and device for producing light metal pellets |
DE19956479.5 | 1999-11-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001038021A1 true WO2001038021A1 (en) | 2001-05-31 |
Family
ID=7930140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/004134 WO2001038021A1 (en) | 1999-11-24 | 2000-11-21 | Method and device for the production of light-metal pellets |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1146975A1 (en) |
JP (1) | JP2003514668A (en) |
KR (1) | KR20010104699A (en) |
BR (1) | BR0007681A (en) |
DE (1) | DE19956479C2 (en) |
TW (1) | TW523434B (en) |
WO (1) | WO2001038021A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002064288A1 (en) * | 2001-02-09 | 2002-08-22 | Sms Demag Aktiengesellschaft | Method and device for casting and solidifying liquid metal and fragmenting said metal |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE823322C (en) * | 1948-10-02 | 1951-12-03 | Eisenwerke Gelsenkirchen A G | Method and device for casting metals in endless stretches |
DE823778C (en) * | 1948-11-05 | 1951-12-06 | Stolberger Zink Ag | Method and device for continuous casting of light and heavy metals, in particular zinc |
US3771586A (en) * | 1972-02-22 | 1973-11-13 | United Aircraft Corp | Apparatus for continuous casting of directionally solidified articles |
WO1991012910A1 (en) * | 1990-02-28 | 1991-09-05 | Asarco Incorporated | Process and apparatus for producing molded shapes |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1445684A (en) * | 1965-06-03 | 1966-07-15 | Commissariat Energie Atomique | Device for continuous casting of refractory materials |
DE3406036A1 (en) * | 1984-02-20 | 1985-08-22 | Mannesmann AG, 4000 Düsseldorf | METHOD AND DEVICE FOR PRODUCING THIN METAL STRINGS FROM METAL MELT, IN PARTICULAR. OF STEEL STRIPS |
-
1999
- 1999-11-24 DE DE19956479A patent/DE19956479C2/en not_active Expired - Lifetime
-
2000
- 2000-11-21 KR KR1020017009280A patent/KR20010104699A/en not_active Application Discontinuation
- 2000-11-21 JP JP2001539619A patent/JP2003514668A/en active Pending
- 2000-11-21 EP EP00989793A patent/EP1146975A1/en not_active Withdrawn
- 2000-11-21 WO PCT/DE2000/004134 patent/WO2001038021A1/en not_active Application Discontinuation
- 2000-11-21 BR BR0007681-3A patent/BR0007681A/en not_active IP Right Cessation
- 2000-11-24 TW TW089125027A patent/TW523434B/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE823322C (en) * | 1948-10-02 | 1951-12-03 | Eisenwerke Gelsenkirchen A G | Method and device for casting metals in endless stretches |
DE823778C (en) * | 1948-11-05 | 1951-12-06 | Stolberger Zink Ag | Method and device for continuous casting of light and heavy metals, in particular zinc |
US3771586A (en) * | 1972-02-22 | 1973-11-13 | United Aircraft Corp | Apparatus for continuous casting of directionally solidified articles |
WO1991012910A1 (en) * | 1990-02-28 | 1991-09-05 | Asarco Incorporated | Process and apparatus for producing molded shapes |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002064288A1 (en) * | 2001-02-09 | 2002-08-22 | Sms Demag Aktiengesellschaft | Method and device for casting and solidifying liquid metal and fragmenting said metal |
Also Published As
Publication number | Publication date |
---|---|
EP1146975A1 (en) | 2001-10-24 |
TW523434B (en) | 2003-03-11 |
JP2003514668A (en) | 2003-04-22 |
DE19956479A1 (en) | 2001-08-16 |
KR20010104699A (en) | 2001-11-26 |
BR0007681A (en) | 2001-11-06 |
DE19956479C2 (en) | 2001-11-22 |
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