CA2681791A1 - Procedure for manufacturing a frame-like structural component - Google Patents
Procedure for manufacturing a frame-like structural component Download PDFInfo
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- CA2681791A1 CA2681791A1 CA 2681791 CA2681791A CA2681791A1 CA 2681791 A1 CA2681791 A1 CA 2681791A1 CA 2681791 CA2681791 CA 2681791 CA 2681791 A CA2681791 A CA 2681791A CA 2681791 A1 CA2681791 A1 CA 2681791A1
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- Prior art keywords
- melt
- channel
- structural component
- casting
- frame
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/68—Seat frames
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- 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
-
- 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
-
- 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
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2272—Sprue channels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Seats For Vehicles (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to a procedure for manufacturing a frame-like structural component (2) with an opening (7), especially a recliner back structure or a seat frame structure of a vehicle, using a light metal alloy by means of casting.
With such a procedure, according to the invention, the following is provided:
a. Feeding of the molten metal to at least two heated melt feed-in guides (11, 11), whose melt outlets (12, 12) empty directly into a channel of a casting form, which serves to admit the melt for the structural component, b. Feeding of the molten metal from the melt feed-in guides into the channel of the casting form, whereby molten streams flow in opposite directions in the channel.
The procedure makes it possible to produce a structural component, which, after casting, in any case needs no significant re-working, and in which, in defined areas of the frame, enhanced mechanical characteristics can be featured.
With such a procedure, according to the invention, the following is provided:
a. Feeding of the molten metal to at least two heated melt feed-in guides (11, 11), whose melt outlets (12, 12) empty directly into a channel of a casting form, which serves to admit the melt for the structural component, b. Feeding of the molten metal from the melt feed-in guides into the channel of the casting form, whereby molten streams flow in opposite directions in the channel.
The procedure makes it possible to produce a structural component, which, after casting, in any case needs no significant re-working, and in which, in defined areas of the frame, enhanced mechanical characteristics can be featured.
Description
Procedure for manufacturing a frame-tike structural component The invention relates to a procedure for manufacturing a frame-like structural component with an opening, especially a recliner back structure or a seat frame structure of a vehicle, while using a light metal alloy by means of casting.
A procedure of this type is known from DE 10 2004 062 946 Al. It serves for manufacture of a recliner back frame of a vehicle seat while using a magnesium alloy. With this, melted metal is cast into a casting hopper by means of shape casting, which [hopper] in essence is placed in the middle of a form for manufacturing the recliner frame so that the metal expands into the form in various directions. The molten metal flows at a rate between 4.5 m per second and 5.5 m per second at a de facto pressure of 500 bar to 7009 bar into the form.
What is a drawback with this known procedure is that after cooling of the melt, fins form through the central attachment of the casting hopper (gate) between it and the actual recliner frame, and these fins are to be removed as waste parts. In addition to this, due to the waste fins, at various locations on the cast recliner frame, it must be re-worked. An additional disadvantage is that with this casting process, unintentionally, areas of the recliner frame cannot be optimized in certain sections as regards mechanical capability to bear loadings. This optimization is significant, especially as regards mechanical loading of the recliner frame in the event of a crash.
In US 6,513,878 B1, a frame-like structural component is described with an opening, specifically a recliner structure of a vehicle seat. This recliner structure is manufactured by casting, whereby a thixo-melting procedure is used to spray in a melt from a semi-melted alloy with a low specific weight.
EP 1 186 469 Al describes a head rest for a vehicle seat, whereby parts of the metallic structure are produced by a thixo-molding process, using a magnesium or aluminum alloy.
From WO 97/04689, manufacture of a recliner structure and a seat frame structure of a vehicle seat by casting is known, whereby the metal body of the structure is produced in a single pass by die casting.
The task of the invention is to take a further step in the procedure mentioned initially, so that structural components can be produced that in any case after casting need no significant re-working, and in which, in defined areas of the frame, enhanced mechanical characteristics can be featured.
The problem is solved by a procedure of the type named initially which is characterized by the following features:
a. addition of the molten metal to at least two heated melt feed-in guides whose melt outlets empty directly into a channel of a casting form, which serves to receive the melt for the structural component b. addition of the molten metal from the melt feed-in guides into the channel of the casting form, whereby the melt streams flow in opposition in the channel.
With the invention-specific procedure, the particular temperature control is essential. Up to its entry into the channel of the casting form, the melt is heated, so it does not harden in this area. Only the frame-like structural component hardens, with waste material not present and re-working of the structural component able to be reduced to a minimum.
Due to the two heated melt feed-in guides, hot melt gets into the area of the channel of the casting form next to the melt feed-in guides, and the melt slowly cools as it passes through the channel. Due to the frame-like configuration of the structural component and the placement of at least two melt feed-in guides, the melt can issue via the melt feed-in guides into those areas of the channel of the casting form that correspond to the ai=eas of the finished structural component in which the finished structural component is subjected to increased mechanical loading. Preferably these are the lateral frame parts of the frame-like structural component, especially, with a rediner back structure, the lateral frame parts that are placed adjacent to support receptacles of the recliner back structure for pivoting accommodation of a seat frame structure.
Through the placement of the melt feed-in guides relative to the channel of the casting form, and the hot melt sites feeding into the channel as a result of this, the mechanical characteristics of the end product - the frame-like structural component - can be deliberately increased at the desired locations, in that the melt feed-in guides produce the corresponding areas that accommodate great forces during a crash. Also, cold-flow locations can be placed with this procedure in defined areas. By this means, controlled breakdowns can be evoked. With this procedure, the wall thickness of the frame-like structural component can be reduced in the direction distant from the gate, to further lower the weight of the frame-like structural component. The prerequisite for this is that just these areas accommodate light loadings. One such lightly loaded area of a recliner structure is found, for example, in the upper horizontal section of the recliner structure, in the area of which a head rest is supported in the frame-like structural component.
The frame-like structural component in particular is a closed frame that thus surrounds an opening in the structural component. However, it is also conceivable for the procedure to be used with a frame-like structural component that forms only an opening between two lateral sections of the structural component and an area that connects these two lateral sections of the structural component.
What is common to all the frame-like structural components with an opening, is that after the molten metal is fed from the melt feed-in guides into the channel of the casting form, the molten streams flow in opposition in the channel. These molten streams which flow at each other, unite, whereby in the area of uniting the melt possesses a lower temperature than in the area of the melt feed-in guides.
Consequently, the uniting areas are especially suited to evoke a controlled breakdown there owing to the lower mechanical characteristics.
In a frame-like structural component with an opening, in which it [the opening] is completely surrounded by the structural component, the structural component is manufactured in such a way that the melt is fed to an annular channel of the casting form via the melt feed-in guides.
The melt feed-in guides can be variously configured. It is viewed as being especially advantageous if the paracular melt feed-in guide has a hot-channel nozzle, which is also designated as a hot runner.
Via this hot-channel nozzle, in a particularly effective manner and way, the melt can be specifically heated up to the entry into the channel of the casting form. By this means is ensured a particulariy good temperature control to the channel and in the channel. The controllable nozzle temperature in the area of the nozzle outlet is thus directly at the entrance of the frame-like structural component, as seen from the viewpoint of the frame-like structural component cooled after the casting. But the very real possibility exists to configure the melt feed-in guides as heated gates of the casting form.
If especially high requirements are to be set for the quality of the frame-like structural component as regards increased mechanical characteristics at various locations, it is recommended to provide a multiplicity of melt feed-in guides, and thus a multiplicity of places at which a melt enters at a high temperature into the channel of the casting form. In this case, four melt feed-in guides are viewed as appropriate.
In particular, the use of hot-channel nozzles in connection with a thixo-molding or thixo-casting process makes it possible to manufacture frame-like structural components of particularly high quality. These semi-solid processes, in which the alloy to be processed is heated to a transitional temperature between solid and liquid, and thus is in a thixotropic condition, ensures through lessened viscosity of the material while shear forces are exerted, that the melt can discharge especially favorably, emerging from the hot-channel nozzles into diverging areas of the channel of the casting form, until the opposite-flowing forward-moving melt streams make contact.
As an altemative, casting of the structural component by means of die casting is offered, whereby the casting is done especially by means of warm-chamber die casting or cold-chamber die casting. In any case, additionally it is possible also to combine with vacuum die casting.
Further advantages and features of the invention are gleaned from the subordinate claims as well as the following description of an embodiment example of the invention, without being limited to it. Figure 1 shows a basic depiction of an arrangement to elucidate the invention-specific procedure.
What is illustrated in figure 1 is a device 1 for feeding the melt from a magnesium alloy to the channel of a casting form, whereby this casting form is not illustrated, but instead the frame-like structural component 2, which is produced during casting, and thus the insertion of the melt into an annular channel of the casting form.
The frame-like structural component 2 is a recliner back structure of a seat, especially the front seat of a passenger automobile, where the recliner structure is formed by lateral frame pieces 3, an upper frame piece 4 that joins them, and a lower frame piece 5 that joins the frame pieces 3. Frame pieces 4 and 5 are placed to be essentially parallel, with upper frame piece 4 able to have receptacles 6 for insertion of a head rest. Frame pieces 3 are situated so as to diverge from frame piece 4, so that the structural component 2 is a trapezoid, frame piece 4 at the top is only slightly shorter than frame piece 5. An opening 7 is formed between the two frame pieces 3 and frame piece 4 and 5. When the frame-like structural component 2 is completed, this [opening] serves to accommodate a suspension, especially a recliner suspension. In case that structural component 2 forms a seat frame structure, this would serve as the receptacle for a bottom suspension.
The apparatus 1 for feeding the melt in has a feed tube 9 with a melt inlet 8.
The feed tube 9 is connected with two branching tubes 10, so that the melt flowing through feed tube 9 is divided in equal parts to the two branching tubes 10. From the two branching tubes 10, the melt gets into the hot channel nozzles 11, wherewith the melt flowing through the particular branching tube 10 is heated in the area of the hot channel nozzle 11 the follows it to a controlled exit temperature, or is kept roughly at it. The outlet area of the melt from the particular hot channel nozzle 11 is designated by the reference number 12. The outlet area is located in those areas of the annular channel of the casting form, which, following the casting process, correspond to structural component 2 formed in the casting form in the area of frame piece 3, and in fact spaced closer to frame piece 5 than to frame piece 4. From the outlet area 12 of the particular hot-channel nozzle 11, the melt is forced according to the double arrow A in the direction of frame piece 4 and in the direction of frame piece 5. The partial melt streams emerging from the two hot-channel melts 11 meet each other, at a lower temperature than the exit temperature of the melts in the outlet areas 12 of hot-channel nozzles 11, in the area of the axis of symmetry of structural component 2 between the two frame pieces 3, thus in the area of the receptacles 6 for the head rests between these two receptacles 6, at half the length of frame piece 5. In the cas6ng process, which preferably is done by means of the thixo-molding procedure, thus the areas in which the melt enters into the channel via the hot-channel nozzles 11, have the best mechanical characteristics, especially the highest mechanical strength, while the areas located downstream of the melt feed-in, especially those in the area of the axis of symmetry of structural component 2, possess less strength. Through the arrangement of the hot-channel nozzles 11, where also more than two hot-channel nozzles can be used, mechanical characteristics can be deliberately increased in locations where the cast frame-like structural component faces the hot-channel nozzles, such as in areas that accommodate larger forces in a crash. In the cold-flow locations in the area of the axis of symmetry, in contrast, a controlled breakdown can be evoked. With this procedure, the wall thickness of structural component 2 can be lessened in the direction distal to the gate, to lower the weight of the component. The prerequisite is that these areas bear light loads.
A procedure of this type is known from DE 10 2004 062 946 Al. It serves for manufacture of a recliner back frame of a vehicle seat while using a magnesium alloy. With this, melted metal is cast into a casting hopper by means of shape casting, which [hopper] in essence is placed in the middle of a form for manufacturing the recliner frame so that the metal expands into the form in various directions. The molten metal flows at a rate between 4.5 m per second and 5.5 m per second at a de facto pressure of 500 bar to 7009 bar into the form.
What is a drawback with this known procedure is that after cooling of the melt, fins form through the central attachment of the casting hopper (gate) between it and the actual recliner frame, and these fins are to be removed as waste parts. In addition to this, due to the waste fins, at various locations on the cast recliner frame, it must be re-worked. An additional disadvantage is that with this casting process, unintentionally, areas of the recliner frame cannot be optimized in certain sections as regards mechanical capability to bear loadings. This optimization is significant, especially as regards mechanical loading of the recliner frame in the event of a crash.
In US 6,513,878 B1, a frame-like structural component is described with an opening, specifically a recliner structure of a vehicle seat. This recliner structure is manufactured by casting, whereby a thixo-melting procedure is used to spray in a melt from a semi-melted alloy with a low specific weight.
EP 1 186 469 Al describes a head rest for a vehicle seat, whereby parts of the metallic structure are produced by a thixo-molding process, using a magnesium or aluminum alloy.
From WO 97/04689, manufacture of a recliner structure and a seat frame structure of a vehicle seat by casting is known, whereby the metal body of the structure is produced in a single pass by die casting.
The task of the invention is to take a further step in the procedure mentioned initially, so that structural components can be produced that in any case after casting need no significant re-working, and in which, in defined areas of the frame, enhanced mechanical characteristics can be featured.
The problem is solved by a procedure of the type named initially which is characterized by the following features:
a. addition of the molten metal to at least two heated melt feed-in guides whose melt outlets empty directly into a channel of a casting form, which serves to receive the melt for the structural component b. addition of the molten metal from the melt feed-in guides into the channel of the casting form, whereby the melt streams flow in opposition in the channel.
With the invention-specific procedure, the particular temperature control is essential. Up to its entry into the channel of the casting form, the melt is heated, so it does not harden in this area. Only the frame-like structural component hardens, with waste material not present and re-working of the structural component able to be reduced to a minimum.
Due to the two heated melt feed-in guides, hot melt gets into the area of the channel of the casting form next to the melt feed-in guides, and the melt slowly cools as it passes through the channel. Due to the frame-like configuration of the structural component and the placement of at least two melt feed-in guides, the melt can issue via the melt feed-in guides into those areas of the channel of the casting form that correspond to the ai=eas of the finished structural component in which the finished structural component is subjected to increased mechanical loading. Preferably these are the lateral frame parts of the frame-like structural component, especially, with a rediner back structure, the lateral frame parts that are placed adjacent to support receptacles of the recliner back structure for pivoting accommodation of a seat frame structure.
Through the placement of the melt feed-in guides relative to the channel of the casting form, and the hot melt sites feeding into the channel as a result of this, the mechanical characteristics of the end product - the frame-like structural component - can be deliberately increased at the desired locations, in that the melt feed-in guides produce the corresponding areas that accommodate great forces during a crash. Also, cold-flow locations can be placed with this procedure in defined areas. By this means, controlled breakdowns can be evoked. With this procedure, the wall thickness of the frame-like structural component can be reduced in the direction distant from the gate, to further lower the weight of the frame-like structural component. The prerequisite for this is that just these areas accommodate light loadings. One such lightly loaded area of a recliner structure is found, for example, in the upper horizontal section of the recliner structure, in the area of which a head rest is supported in the frame-like structural component.
The frame-like structural component in particular is a closed frame that thus surrounds an opening in the structural component. However, it is also conceivable for the procedure to be used with a frame-like structural component that forms only an opening between two lateral sections of the structural component and an area that connects these two lateral sections of the structural component.
What is common to all the frame-like structural components with an opening, is that after the molten metal is fed from the melt feed-in guides into the channel of the casting form, the molten streams flow in opposition in the channel. These molten streams which flow at each other, unite, whereby in the area of uniting the melt possesses a lower temperature than in the area of the melt feed-in guides.
Consequently, the uniting areas are especially suited to evoke a controlled breakdown there owing to the lower mechanical characteristics.
In a frame-like structural component with an opening, in which it [the opening] is completely surrounded by the structural component, the structural component is manufactured in such a way that the melt is fed to an annular channel of the casting form via the melt feed-in guides.
The melt feed-in guides can be variously configured. It is viewed as being especially advantageous if the paracular melt feed-in guide has a hot-channel nozzle, which is also designated as a hot runner.
Via this hot-channel nozzle, in a particularly effective manner and way, the melt can be specifically heated up to the entry into the channel of the casting form. By this means is ensured a particulariy good temperature control to the channel and in the channel. The controllable nozzle temperature in the area of the nozzle outlet is thus directly at the entrance of the frame-like structural component, as seen from the viewpoint of the frame-like structural component cooled after the casting. But the very real possibility exists to configure the melt feed-in guides as heated gates of the casting form.
If especially high requirements are to be set for the quality of the frame-like structural component as regards increased mechanical characteristics at various locations, it is recommended to provide a multiplicity of melt feed-in guides, and thus a multiplicity of places at which a melt enters at a high temperature into the channel of the casting form. In this case, four melt feed-in guides are viewed as appropriate.
In particular, the use of hot-channel nozzles in connection with a thixo-molding or thixo-casting process makes it possible to manufacture frame-like structural components of particularly high quality. These semi-solid processes, in which the alloy to be processed is heated to a transitional temperature between solid and liquid, and thus is in a thixotropic condition, ensures through lessened viscosity of the material while shear forces are exerted, that the melt can discharge especially favorably, emerging from the hot-channel nozzles into diverging areas of the channel of the casting form, until the opposite-flowing forward-moving melt streams make contact.
As an altemative, casting of the structural component by means of die casting is offered, whereby the casting is done especially by means of warm-chamber die casting or cold-chamber die casting. In any case, additionally it is possible also to combine with vacuum die casting.
Further advantages and features of the invention are gleaned from the subordinate claims as well as the following description of an embodiment example of the invention, without being limited to it. Figure 1 shows a basic depiction of an arrangement to elucidate the invention-specific procedure.
What is illustrated in figure 1 is a device 1 for feeding the melt from a magnesium alloy to the channel of a casting form, whereby this casting form is not illustrated, but instead the frame-like structural component 2, which is produced during casting, and thus the insertion of the melt into an annular channel of the casting form.
The frame-like structural component 2 is a recliner back structure of a seat, especially the front seat of a passenger automobile, where the recliner structure is formed by lateral frame pieces 3, an upper frame piece 4 that joins them, and a lower frame piece 5 that joins the frame pieces 3. Frame pieces 4 and 5 are placed to be essentially parallel, with upper frame piece 4 able to have receptacles 6 for insertion of a head rest. Frame pieces 3 are situated so as to diverge from frame piece 4, so that the structural component 2 is a trapezoid, frame piece 4 at the top is only slightly shorter than frame piece 5. An opening 7 is formed between the two frame pieces 3 and frame piece 4 and 5. When the frame-like structural component 2 is completed, this [opening] serves to accommodate a suspension, especially a recliner suspension. In case that structural component 2 forms a seat frame structure, this would serve as the receptacle for a bottom suspension.
The apparatus 1 for feeding the melt in has a feed tube 9 with a melt inlet 8.
The feed tube 9 is connected with two branching tubes 10, so that the melt flowing through feed tube 9 is divided in equal parts to the two branching tubes 10. From the two branching tubes 10, the melt gets into the hot channel nozzles 11, wherewith the melt flowing through the particular branching tube 10 is heated in the area of the hot channel nozzle 11 the follows it to a controlled exit temperature, or is kept roughly at it. The outlet area of the melt from the particular hot channel nozzle 11 is designated by the reference number 12. The outlet area is located in those areas of the annular channel of the casting form, which, following the casting process, correspond to structural component 2 formed in the casting form in the area of frame piece 3, and in fact spaced closer to frame piece 5 than to frame piece 4. From the outlet area 12 of the particular hot-channel nozzle 11, the melt is forced according to the double arrow A in the direction of frame piece 4 and in the direction of frame piece 5. The partial melt streams emerging from the two hot-channel melts 11 meet each other, at a lower temperature than the exit temperature of the melts in the outlet areas 12 of hot-channel nozzles 11, in the area of the axis of symmetry of structural component 2 between the two frame pieces 3, thus in the area of the receptacles 6 for the head rests between these two receptacles 6, at half the length of frame piece 5. In the cas6ng process, which preferably is done by means of the thixo-molding procedure, thus the areas in which the melt enters into the channel via the hot-channel nozzles 11, have the best mechanical characteristics, especially the highest mechanical strength, while the areas located downstream of the melt feed-in, especially those in the area of the axis of symmetry of structural component 2, possess less strength. Through the arrangement of the hot-channel nozzles 11, where also more than two hot-channel nozzles can be used, mechanical characteristics can be deliberately increased in locations where the cast frame-like structural component faces the hot-channel nozzles, such as in areas that accommodate larger forces in a crash. In the cold-flow locations in the area of the axis of symmetry, in contrast, a controlled breakdown can be evoked. With this procedure, the wall thickness of structural component 2 can be lessened in the direction distal to the gate, to lower the weight of the component. The prerequisite is that these areas bear light loads.
Claims (11)
1. Procedure for manufacturing a frame-like structural component (2) with an opening (7), especially a recliner back structure or a seat frame structure of a vehicle, using a light metal alloy by means of casting, characterized by the following features:
a. Feeding of the molten metal to at least two heated melt feed-in guides (11, 11), whose melt outlets (12, 12) empty directly into a channel of a casting form, which serves to admit the melt for the structural component, b. Feeding of the molten metal from the melt feed-in guides into the channel of the casting form, whereby molten streams flow in opposite directions in the channel.
a. Feeding of the molten metal to at least two heated melt feed-in guides (11, 11), whose melt outlets (12, 12) empty directly into a channel of a casting form, which serves to admit the melt for the structural component, b. Feeding of the molten metal from the melt feed-in guides into the channel of the casting form, whereby molten streams flow in opposite directions in the channel.
2. Procedure according to claim 1, characterized in that the melt is passed through melt feed-in channels configured as hot-channel nozzles (11, 11) or heated gates into the channel of the casting form.
3. Procedure according to claim 1 or 2, characterized in that the melt is fed to an annular channel of the casting form via the melt feed-in guides.
4. Procedure according to one of claims 1 to 3, characterized in that the melt is fed by means of two or four melt feed-in guides to the channel of the casting form.
5. Procedure according to one of claims 1 to 4, characterized in that the structural component is cast by means of a semi-solid process, especially by means of a thixo-molding or thixo-casting process.
6. Procedure according to one of claims 1 to 4, characterized in that the structural component is cast by means of die casting, especially by means of warm-cold chamber die casting or vacuum die casting.
7. Procedure according to one of claims 1 to 6, characterized in that the melt is issued via the melt feed-in guides into those areas of the channel of the casting form that correspond to the areas of the finished structural component (2), in which the finished structural component is subjected to higher mechanical loading.
8. Procedure according to one of claims 1 to 7, characterized in that the melt is issued via the melt feed-in guides into those areas of the channel of the casting form that correspond to the areas of the finished structural component (2) that form lateral frame pieces (3, 3) of the frame-like structural component, especially that form lateral frame pieces with a recliner back structure, the adjoining support receptacles of the recliner back structure are arranged to admit a seat frame structure.
9. Procedure according to one of claims 1 to 8, characterized in that cold-flow areas of the molten metal are placed in defined areas of the structural component that are subject to low mechanical loads.
10. Procedure according to one of claims 1 to 9, characterized in that the molten metals, issuing from the melt outlet from the melt feed-in
11 guides, flow at least in channel areas of the casting form that have relatively large cross sections and from there into channel areas that in contrast have reduced cross sections.
11. Procedure according to one of claims 1 to 10, characterized in that the melt essentially consists of magnesium.
11. Procedure according to one of claims 1 to 10, characterized in that the melt essentially consists of magnesium.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810052062 DE102008052062A1 (en) | 2008-10-17 | 2008-10-17 | Method for producing a frame-like structural component |
| DE102008052062.4 | 2008-10-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2681791A1 true CA2681791A1 (en) | 2010-04-17 |
| CA2681791C CA2681791C (en) | 2013-08-20 |
Family
ID=42034931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2681791 Expired - Fee Related CA2681791C (en) | 2008-10-17 | 2009-10-07 | Procedure for manufacturing a frame-like structural component |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5133959B2 (en) |
| CA (1) | CA2681791C (en) |
| DE (1) | DE102008052062A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149548A (en) * | 2015-10-22 | 2015-12-16 | 富乐压铸(太仓)有限公司 | Sprue used for exterior face of automobile emergency key bit |
| CN106694850A (en) * | 2017-03-20 | 2017-05-24 | 中信戴卡股份有限公司 | Pouring device for high-pressure casting mold |
| CN106735074A (en) * | 2017-03-20 | 2017-05-31 | 中信戴卡股份有限公司 | A kind of apparatus for pouring for high-pressure casting mould |
| US9676306B2 (en) | 2014-08-02 | 2017-06-13 | GM Global Technology Operations LLC | Armrest for a vehicle seat and vehicle seat with the armrest |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010053125A1 (en) | 2010-12-01 | 2012-06-06 | Volkswagen Ag | Method for producing a series of cast components and device for producing a cast component |
| DE102012024926A1 (en) | 2012-12-19 | 2014-06-26 | Volkswagen Aktiengesellschaft | Casting apparatus, useful for a hot-runner molding method for manufacturing e.g. aluminum component, comprises a mold cavity comprising two inlet openings, and casting unit comprising a cavity and partially heatable casting channels |
| DE102013105433B3 (en) * | 2013-05-27 | 2014-05-22 | Schuler Pressen Gmbh | Casting device with a loop and casting process |
| CN103331432B (en) * | 2013-07-04 | 2015-06-17 | 上海交通大学 | Vacuum die casting method of rare earth-magnesium alloy |
| CN105215328B (en) * | 2015-11-10 | 2017-12-08 | 北京科技大学 | A kind of extrusion casint system of the short vehicle frame of wheelchair |
| CN105598374A (en) * | 2015-12-28 | 2016-05-25 | 共享铸钢有限公司 | Casting system design method for preventing root crack defect of inner gate of casting |
| CN105598376B (en) * | 2016-01-13 | 2018-11-27 | 共享装备股份有限公司 | Combined type pouring basin |
| DE102016214107A1 (en) * | 2016-08-01 | 2018-02-01 | Volkswagen Aktiengesellschaft | Plasma cleaning of die-cast structural components for motor vehicles and production of a body-component composite with a plasma-cleaned die-cast structural component |
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2008
- 2008-10-17 DE DE200810052062 patent/DE102008052062A1/en not_active Withdrawn
-
2009
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- 2009-10-14 JP JP2009236845A patent/JP5133959B2/en not_active Expired - Fee Related
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|---|---|---|---|---|
| US9676306B2 (en) | 2014-08-02 | 2017-06-13 | GM Global Technology Operations LLC | Armrest for a vehicle seat and vehicle seat with the armrest |
| CN105149548A (en) * | 2015-10-22 | 2015-12-16 | 富乐压铸(太仓)有限公司 | Sprue used for exterior face of automobile emergency key bit |
| CN106694850A (en) * | 2017-03-20 | 2017-05-24 | 中信戴卡股份有限公司 | Pouring device for high-pressure casting mold |
| CN106735074A (en) * | 2017-03-20 | 2017-05-31 | 中信戴卡股份有限公司 | A kind of apparatus for pouring for high-pressure casting mould |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2681791C (en) | 2013-08-20 |
| DE102008052062A1 (en) | 2010-04-22 |
| JP5133959B2 (en) | 2013-01-30 |
| JP2010094737A (en) | 2010-04-30 |
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