CN101007338A - Continuous pressure molten metal supply system and method for forming continuous metal articles - Google Patents
Continuous pressure molten metal supply system and method for forming continuous metal articles Download PDFInfo
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- CN101007338A CN101007338A CNA2006100678848A CN200610067884A CN101007338A CN 101007338 A CN101007338 A CN 101007338A CN A2006100678848 A CNA2006100678848 A CN A2006100678848A CN 200610067884 A CN200610067884 A CN 200610067884A CN 101007338 A CN101007338 A CN 101007338A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
- B21C33/02—Feeding extrusion presses with metal to be extruded ; Loading the dummy block the metal being in liquid form
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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
- B22D17/20—Accessories: Details
- B22D17/2015—Means for forcing the molten metal into the die
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Abstract
The invention provides a device for forming a continuous metal product without limited length, comprising an output branch-tube communicated with a molten metal source; a plurality of output pressing dies communicated with the output branch-tube for forming a plurality of continuous metal products without limited length. Each output pressing die also comprises a pressing die shell connected with the output branch-tube, wherein, the pressing die shell is provided with pressing die holes for forming the section shape of the continuous metal product separated from the output pressing die. The pressing shell defines a pressing die channel communicated with the output branch-tube and used for conveying the metal to the output pressing die holes. The pressing shell also defines at least one part of a cooling agent chamber around the pressing die channel so as to cool and solidify the molten metal received by the output branch-tube. Besides, the pressing die holes are moved through the pressing die channel.
Description
Patent application of the present invention is that application number is 02812234.8, denomination of invention is divided an application for the application for a patent for invention of " continuous pressure molten metal supply system and be used to form the method for continuous metal goods ".
Technical field
The present invention relates to a kind of molten metal supply system, particularly a kind of continuous pressure molten metal supply system and be used to form the method for the continuous metal goods that length do not limit.
Background technology
The metal working process that is called as extrusion molding comprises that the pressing mold opening by having predetermined configuration has the shape of length and constant basically cross section with formation to metal charge (ingot or blank) pressurization.For example, in the extrusion process of aluminium alloy, the aluminium material is preheating to suitable extrusion temperature.Then the aluminium material is put into the cylindrical shell of heating.The cylindrical shell that is used for extrusion forming process comprises the pressing mold opening that has required form at one end and the essentially identical reciprocating-piston in hole or the staking punch of cross sectional dimensions and cylindrical shell.Piston or staking punch move and press the aluminium material with the extruded aluminium material.Opening in the pressing mold is the paths of least resistance of aluminium material under pressure.The distortion of described aluminium material with flow through the pressing mold opening and have the shape of cross section extruded product identical with the pressing mold opening with production.
Referring to Fig. 1, above-mentioned extrusion forming process represents with Reference numeral 10, and is made of several careful and discontinuous operations usually, comprising: fusing 20, casting 30, homogenize 40, (non-imposed) sawing 50, heat 60 and be extruding 70 at last again.The aluminium material is at high temperature cast and is cooled to room temperature usually.Because the aluminium material cast, so has certain inhomogeneity in the structure and the aluminium material is heated so that casting metals homogenizes.Behind homogenization step, the aluminium material is cooled to room temperature.After cooling, the aluminium material of homogeneous is reheated the high temperature that is called as preheat temperature in stove.It will be understood by those skilled in the art that for each blank that need be extruded in a series of blanks preheat temperature is identical and based on experience basically.After the aluminium material reaches preheat temperature, prepare to place it in the extruder and be extruded.
All above-mentioned steps relate to technical staff's known technology in casting and extruding field.Each relates to the metallurgy control that needs extrusion metal in the above-mentioned steps.The cost consumption of these steps is very big, from room temperature metal charge is heated at every turn again and causes energy consumption.Also there are the cost that reclaims in the production relevant, the labor cost of being correlated with and the capital cost and the running cost of extrusion equipment with the processing stock with the needs of metal charge side cut.
In the prior art, attempt for a kind of extrusion equipment of motlten metal operation that can directly utilize of design.The U.S. Pat 3,328,994 that licenses to Lindemann has disclosed such example.The Patent publish of Lindemann a kind of being used for by the extruding jet nozzle extrusion metal to form the equipment of solid hopkinson bar.Described equipment comprises the extrusion die (that is extruding jet nozzle) that is used to hold the container in feeding molten metal source and is positioned at container exit.Conduit leads to extruding jet nozzle from the bottom opening of container.Heated chamber is arranged in from the bottom opening of container and leads to the conduit of extruding jet nozzle and be used to heat the motlten metal that leads to extruding jet nozzle.Cooling chamber surrounds extruding jet nozzle and makes the motlten metal cooling with convenient motlten metal during by extruding jet nozzle and solidify.Container is pressurized to force the motlten metal that is contained in the container by output duct, heated chamber and pass through extruding jet nozzle at last.
The U.S. Pat 4,075,881 that licenses to Kreidler has disclosed a kind of method and apparatus that utilizes forming tool and mould directly motlten metal to be manufactured bar, pipe and special-shaped product by extrusion molding.Motlten metal is installed in the reception interval chamber of this equipment with the form of criticizing continuously, and described motlten metal is cooled to be changed into a kind of thermoplasticity state.Continuous batch has formed layer and has suffered the structure of layer to form bar or other similar goods.
The U.S. Pat 4,774,997 and the US 4,718,476 that license to Eibe have disclosed a kind of equipment and method that is used for the continuously extruded casting of motlten metal.In the equipment disclosed by the patent of Eibe, motlten metal is accommodated in the pressure vessel, and described pressure vessel can utilize air or such as the pressurization of the inert gas of argon gas.When pressure vessel is pressurized, force the motlten metal that is contained in wherein by the extrusion die assembly.Described extrusion die assembly comprises the model with the circulation of downstream fine pressing mold.Nozzle is in such position, that is, can spray water on the outside of model so that the motlten metal cooling by wherein and solidifying.The metal that then forces cooling and solidify passes through finishing die.After leaving finishing die, the metal of extruding with the form of metal tape between a pair of pressure roller by and be wound onto crimping machine before be further cooled.
Summary of the invention
An object of the present invention is to provide a kind of being used for the operating pressure of substantial constant and flow velocity with the molten metal supply system of feeding molten metal to processing of downstream metal or forming technology.Another object of the present invention provides a kind of molten metal supply system and method that can form the continuous metal goods that length do not limit.
Briefly, above-mentioned purpose is to be realized by a kind of method that can form the continuous metal goods that length do not limit described here.Usually, this method comprises the following steps: to provide a plurality of motlten metal syringes, the piston that each syringe has injector housing and can back and forth operate in housing, each syringe and feeding molten metal source and the circulation of output manifold, the piston of each syringe is removable by making the motlten metal that comes from the feeding molten metal source be received in first stroke in each housing and making each syringe motlten metal is provided to second stroke of output manifold under pressure, wherein said output manifold comprises a plurality of output pressing molds that are used to form the continuous metal goods that length do not limit, and described output pressing mold is configured to make the motlten metal cooling and solidifies to form the form of metallic article; Sequentially injector-actuated so that each piston move different periods by their first stroke and second stroke, thereby provide constant basically motlten metal flow velocity and pressure for the output manifold; Make the motlten metal cooling in the output pressing mold form semi-solid-state metal to export in pressing mold at each; Make output pressing mold in semi-solid-state metal solidify the frozen metal that has as-cast structure with formation; Discharge the frozen metal to form metallic article by the output pressing mold hole that limits by each output pressing mold.
Described method can be included in discharges processing is solidified in the output pressing mold before the step of frozen metal metal by output pressing mold hole and forms a kind of step of processing the back tissue in the metal that is solidifying.Can each export pressing mold the pressing mold hole the upstream disperse-restrain in the chamber step of carrying out the described metal that processing is solidified in the output pressing mold.
Each output pressing mold can comprise the output die passageway that communicates with the pressing mold hole and be used for metal is transported to the pressing mold hole.The pressing mold hole can have the cross-sectional area littler than pressing mold passage.Can utilize and make the frozen metal eject the step that the metal that solidifies is processed in execution by the less pressing mold hole of cross-sectional area of each output pressing mold.At least one output pressing mold can have the die passageway of cross-sectional area less than corresponding pressing mold hole.Can utilize and make the frozen metal carry out the step of processing frozen metal at least one output pressing mold from the pressing mold hole that the die passageway of small cross sectional is discharged to corresponding comparatively large cross-sectional area.
Described method can comprise the step of discharging the frozen metal of at least one metallic article by the second output pressing mold with pressing mold hole.The second output pressing mold can be positioned at the downstream of the first output pressing mold.The second pressing mold hole can have the cross-sectional area less than the first pressing mold hole.Described method also can comprise utilizing makes the frozen metal eject the further processing steps in the frozen metal of at least one metallic article by the second pressing mold hole.
Described method can comprise processes the step that organize the back to the frozen metal processing that forms at least one metallic article to produce at least one metallic article, and described procedure of processing is to carry out in the downstream of output pressing mold.Can utilize a plurality of rollers that contact with described at least one metallic article to carry out described procedure of processing.But described at least one metallic article continuous slab or continuous ingot.
The pressing mold hole of at least one output pressing mold can have the metallic article that has symmetrical cross-sections with formation with respect to the cross section of at least one axis symmetry by it.In addition, the form of the metallic article of circular cross section is arranged to form in the pressing mold hole that at least one can be exported pressing mold.In addition, the pressing mold hole of at least one output pressing mold can be configured to form the form of the metallic article of polygon cross section.The pressing mold hole of at least one output pressing mold can be configured to form the form of the metallic article of annular cross section.In addition, the pressing mold hole of at least one output pressing mold can have asymmetric cross section has asymmetric cross section with formation metallic article.
The pressing mold hole of at least one output pressing mold can have the metallic article that has symmetrical cross-sections with formation with respect to the cross section of at least one axis symmetry by it, and the pressing mold hole of at least one output pressing mold can have asymmetric cross section has asymmetric cross section with formation metallic article.
A plurality of rollers can be exported the pressing mold gang and contact formed metallic article in each downstream, pressing mold hole with each.Described method can comprise that also the CONTACT WITH FRICTION of utilizing between roller and the metallic article provides the step of back pressure for a plurality of syringes.At least one pressing mold Kongzui is configured to form the form of continuous slab well.This method also can comprise utilizes roller that the frozen metal that forms continuous slab is further processed to produce the step of processing back tissue.
Each described output pressing mold can comprise the output die passageway that communicates with the pressing mold hole and be used for metal is transported to the pressing mold hole.Therefore at least one pressing mold hole can have cross-sectional area than the little die passageway in corresponding pressing mold hole, and described method can comprise utilizing the frozen metal is processed to form the step of processing back tissue the frozen metal from the pressing mold hole that the die passageway of small cross sectional is discharged to the corresponding comparatively large cross-sectional area of at least one output pressing mold.The pressing mold hole of comparatively large cross-sectional area can be configured to form the form of continuous ingot.A plurality of rollers can contact with described ingot in the downstream of described at least one output pressing mold, provide the step of back pressure for a plurality of syringes thereby described method also can comprise the CONTACT WITH FRICTION of utilizing between roller and the ingot.This method also can comprise utilizes roller that the frozen metal that forms ingot is further processed to produce the step of processing back tissue.
The metallic article that utilizes said method to form can adopt following any shape, but the invention is not restricted to following shape: the solid hopkinson bar with polygon or circular cross section; The pipe of circle or polygon cross section; Plate with polygon cross section; And ingot with polygon or circular cross section.
The invention still further relates to a kind of equipment that is used to form the continuous metal goods that length do not limit.Described equipment comprises output manifold and a plurality of output pressing mold.Described output manifold is configured to the form with the molten metal sources circulation.A plurality of output pressing molds and the circulation of output manifold.The output pressing mold is configured to form the form of the continuous metal goods that a plurality of length do not limit.Each output pressing mold also comprises the pressing mold housing that links to each other with described output manifold.Described pressing mold housing has the pressing mold hole, and described pressing mold hole is configured to form the form of the shape of cross section of the continuous metal goods that leave the output pressing mold.The pressing mold housing also has with the circulation of output pressing mold and is used for metal is transported to the die passageway of exporting the pressing mold hole.In addition, the pressing mold housing has around the coolant chamber of at least a portion of described die passageway so that the motlten metal cooling that receives from the output manifold and solidify and move to the pressing mold hole by die passageway.
The die passageway of at least one output pressing mold can have dispersing-contraction section in upstream, corresponding pressing mold hole.The die passageway of at least one output pressing mold can comprise that the plug that is positioned at wherein is to form the metallic article of annular cross section.A plurality of rollers can be exported the pressing mold gang and be in such position with each, promptly contact formed metallic article in each downstream, pressing mold hole to be frictionally engaged metallic article and be that motlten metal in the manifold provides back pressure.
At least one die passageway of described output pressing mold can have the cross-sectional area greater than corresponding pressing mold hole.At least one die passageway can have the cross-sectional area less than corresponding pressing mold hole.
The die passageway of at least one output pressing mold can have the cross-sectional area greater than corresponding pressing mold hole.The second output pressing mold can be positioned at the downstream of at least one output pressing mold.The second output pressing mold can have the pressing mold hole of cross-sectional area less than corresponding pressing mold hole, upstream.The second output pressing mold can link to each other with upstream output pressing mold regularly.
The pressing mold housing of each output pressing mold can link to each other with the output manifold regularly.In addition, the pressing mold housing of each output pressing mold can form with the output manifold is whole.
The pressing mold hole of at least one output pressing mold can be configured to form the form of the metallic article of circular cross section.In addition, the pressing mold hole of at least one output pressing mold can be configured to form the form of the metallic article of polygon cross section.In addition, the pressing mold hole of at least one output pressing mold can be configured to form the form of the metallic article of annular cross section.The pressing mold hole of at least one output pressing mold can have the asymmetric cross section of the metallic article that is used to form asymmetric cross section.In addition, the pressing mold hole of at least one output pressing mold can have the metallic article that has symmetrical cross-sections with formation with respect to the cross section of at least one axis symmetry by it.
The pressing mold hole of at least one output pressing mold can be configured to form the form of continuous slab or continuous ingot.Ingot can have polygon or circular cross section continuously.Continuous slab also can have the polygon cross section.
Described equipment also can comprise single output pressing mold, and described output pressing mold has the pressing mold housing, the die passageway that described pressing mold housing has the pressing mold hole and circulates with the output manifold.The pressing mold housing also can have the coolant chamber of surrounding described die passageway at least in part.Described pressing mold Kongzui is configured to form the form of the shape of cross section of continuous metal goods well.
Description of drawings
From below in conjunction with finding out other details of the present invention and advantage significantly the detailed description of accompanying drawing, identical in the accompanying drawings parts are represented with identical Reference numeral.
Fig. 1 is the schematic diagram of extrusion process related in the prior art;
Fig. 2 is the sectional view of the related a kind of molten metal supply system of first embodiment of the invention, and wherein said molten metal supply system comprises feeding molten metal source, a plurality of motlten metal syringe and output manifold;
Fig. 3 is the sectional view of a syringe of the molten metal supply system shown in Fig. 2, and the syringe shown in it is in the starting point of discharge stroke;
Fig. 4 is the sectional view of the syringe shown in Fig. 3, and the syringe shown in it is in the starting point of backward stroke;
Fig. 5 is that expression is about the piston position of an infusion cycles of the syringe shown in Fig. 3 and Fig. 4 and the chart of time relationship;
Fig. 6 is that arrangement form is supplied with and discharged to the another kind of gas that is used for the syringe shown in Fig. 3 and Fig. 4;
Fig. 7 is that expression is about the piston position of a plurality of syringes of the molten metal supply system shown in Fig. 2 and the chart of time relationship;
Fig. 8 is the sectional view of the related a kind of molten metal supply system of second embodiment of the invention, and wherein said molten metal supply system comprises feeding molten metal source, a plurality of motlten metal syringe and output manifold;
Fig. 9 is the sectional view that is used for the output manifold of the molten metal supply system shown in Fig. 2 and Fig. 8, wherein shows the output manifold that is used for feeding molten metal to an exemplary downstream technology;
Figure 10 is the plan cross-sectional view that is used to form the equipment of the continuous metal goods that a plurality of length do not limit involved in the present invention, has wherein comprised the manifold shown in Fig. 8 and Fig. 9;
Figure 11 a is the sectional view of output pressing mold that is suitable for forming the metallic article of solid cross-section;
Figure 11 b is the sectional view that utilizes the metallic article of the solid cross-section that the output pressing mold of Figure 11 a forms;
Figure 12 a is the sectional view of output pressing mold that is suitable for forming the metallic article of annular cross section;
Figure 12 b is the sectional view that utilizes the metallic article of the annular cross section that the output pressing mold of Figure 12 a forms;
Figure 13 is the sectional view of the 3rd embodiment of the output pressing mold shown in Figure 10;
Figure 14 is the resulting sectional view of 14-14 line in Figure 13;
Figure 15 is the resulting sectional view of 15-15 line in Figure 13;
Figure 16 is the front end view of the output pressing mold shown in Figure 13;
Figure 17 is the sectional view of the output pressing mold that is used in combination with the equipment shown in Figure 10, and wherein equipment shown in Figure 10 has the second coupled output pressing mold further to reduce the cross-sectional area of metallic article;
Figure 18 is the sectional view that is suitable for forming the output pressing mold of continuous metal sheet involved in the present invention;
Figure 19 is the sectional view that is suitable for forming the output pressing mold of continuous metal ingot involved in the present invention;
Figure 20 is the perspective view that utilizes the metallic plate of output pressing mold formation shown in Figure 180;
Figure 21 a is the perspective view that utilizes the ingot of output pressing mold formation shown in Figure 19, and ingot shown in it has polygonal cross section;
Figure 21 b is the perspective view that utilizes the ingot of output pressing mold formation shown in Figure 19, and ingot shown in it has circular cross section;
Figure 22 is the sectional view that is suitable for forming the output pressing mold hole of the continuous metal I-girder that length do not limit;
Figure 23 is the sectional view that is suitable for forming the output pressing mold hole of the continuous special-shaped bar that length do not limit;
Figure 24 is the sectional view that is suitable for forming the output pressing mold hole of the continuous circular metallic article with square central opening that length do not limit; And
Figure 25 is the sectional view that is suitable for forming the output pressing mold hole of the square-shaped metal goods with square central opening that length do not limit.
The specific embodiment
The present invention relates to comprise the molten metal supply system of at least two (that is, a plurality of) motlten metal syringes.This molten metal supply system can be used for feeding molten metal to the processing of downstream metal or metal forming equipment or technology.Particularly, this molten metal supply system is used for constant basically flow velocity and pressure feeding molten metal being processed or metal forming equipment or technology to such downstream metal, such as press molding, forging and rolling.Other downstream processes that are equal to are also in protection scope of the present invention.
Referring to Fig. 2-4, molten metal supply system 90 involved in the present invention comprises a plurality of motlten metal syringes 100, for the sake of clarity, uses " a ", " b ", " c " and " d " to represent these syringes respectively.Three syringe 100a, 100b, 100c shown in Fig. 2 are examples of the present invention, and the minimum number of the required syringe 100 of molten metal supply system 90 is two as mentioned above.Syringe 100a, 100b, 100c are identical and for the sake of clarity, only describe their parts below with respect to single syringe " 100 ".
Syringe 100 comprises the housing 102 that is used for holding motlten metal before motlten metal is expelled to upstream device or technology.Piston 104 extends downwardly in the housing 102 and can back and forth operate in housing 102.Housing 102 and piston 104 are preferably columniform.Piston 104 comprises piston rod 106 and the piston head 108 that links to each other with piston rod 106.Piston rod 106 has first end 110 and second end 112.Piston head 108 links to each other with first end 110 of piston rod 106.Second end 112 of piston rod 106 engages with hydraulic unit driver or staking punch 114 with driven plunger 104 and realizes that it moves back and forth.Second end 112 of piston rod 106 engages with hydraulic unit driver 114 by autoregistration fastener 116.During the moving back and forth of piston 104, piston head 108 preferably keeps being positioned at fully housing 102.Piston head 108 can form or forms separately with piston rod 106 is whole.
Because the high temperature of the motlten metal that is used in combination with syringe 100 preferably utilizes a kind of cooling medium, such as water syringe 100 is cooled off.For example, piston rod 106 can have medium pore 122.Medium pore 122 utilizes input pipe 124 and output duct 126 can make cooling water pass through the inside of piston rod 106 by input pipe 124 and output duct 126 and the circulation of cooling water source (not shown).Similarly, can utilize around housing 102 extensions and position and cool off with 128 pairs of annular pressure seals 120 of cooling jacket that pressure seal 120 overlaps substantially.Syringe 100a, 100b, 100c can be connected jointly with single cooling water source.
Removable usually the discharge stroke of piston 104 by making motlten metal be received in the backward stroke in the housing 102 and motlten metal is discharged from housing 102.Fig. 3 show be in be about to begin a some place of (or when terminal point of backward stroke) before the discharge stroke piston 104 so that motlten metal is discharged from housing 102.On the contrary, Fig. 4 shows the piston 104 at when the destination county of discharge stroke (perhaps when the starting point place of backward stroke).
Molten metal supply system 90 also comprises the feeding molten metal source 132 of standby supply that is used to keep motlten metal 134 is supplied to the housing 102 of each syringe 100a, 100b, 100c.Feeding molten metal source 132 can hold above-mentioned any metal or metal alloy.
Molten metal supply system 90 also comprises the output manifold 140 that is used for motlten metal 134 is supplied to upstream device or technology.Syringe 100a, 100b, 100c circulate with output manifold 140 respectively.Particularly, the port one 38 of each syringe 100a, 100b, 100c is as the inlet or the import that enter each syringe 100a, 100b, 100c, and the motlten metal 134 that is used for discharging from the housing 102 of each syringe 100a, 100b, 100c distributes (that is injection) to output manifold 140.
Molten metal supply system 90 also comprises the pressurized gas supply source 144 with each syringe 100a, 100b, 100c circulation.But 144 1 inert gas sources of gas supply source are such as helium, nitrogen or argon, compressed air source or carbon dioxide.Particularly, the housing 102 of each syringe 100a, 100b, 100c passes through separately gas control valve 146a, 146b, 146c and 144 circulations of gas supply source.
The common source that gas supply source 144 preferably links to each other with the housing 102 of each syringe 100a, 100b, 100c.Provide gas supply source 144 with in the backward stroke of the piston 104 of each syringe 100a, 100b, 100c to being formed on piston head 108 and flowing into space pressurization (below will be described in greater detail) between the motlten metal 134 in the housing 102.Move back and forth in the process in housing 102 at piston 104, form the space between piston head 108 and the motlten metal 134, be illustrated in the accompanying drawing 3, and as shown in Figure 3,, represent this space with Reference numeral 148 for exemplary syringe 100.
In order to make gas flow to the space 148 that is formed between piston head 108 and the motlten metal 134 from gas supply source 144, piston 108 has the external diameter that is slightly less than housing 102 internal diameters.Therefore, in the operating process of syringe 100a, 100b, 100c, almost not wearing and tearing between piston head 108 and the housing 102.Gas control valve 146a, 146b, 146c are suitable for being formed on space 148 pressurization between piston head 108 and the motlten metal 134 and making space 148 exhausts to reach atmospheric pressure at the destination county of each discharge stroke of piston 104.For example, gas control valve 146a, 146b, 146c have single valve body respectively, and described valve body has two independent control ports, and as described herein, one is used to make space 148 " exhaust ", and second is used to make space 148 " pressurization ".Can utilize single multiposition device to drive independently exhaust and pressurization port, described single multiposition device can be by Long-distance Control.Perhaps, gas control valve 146a, 146b, 146c can be substituted by the valve of two independent controls under each situation, and the gentle body supply valve of all example exhaust valves is as described in conjunction with Fig. 6 here.Any form that is provided with all is preferred.
Molten metal supply system 90 also comprises corresponding sensor 149a, 149b, the 149c that links to each other with the housing 102 of each syringe 100a, 100b, 100c, and sensor 149a, 149b, 149c are used for the pressure in the operating process monitoring space 148 of syringe 100a, 100b, 100c.
Molten metal supply system 90 also comprises the control module 160 that is used for independent control syringe 100a, 100b, 100c, such as programmable calculator (PC) or programmable logic controller (PLC) (PLC).Provide control module 160 with control syringe 100a, 100b, 100c, be used in particular for controlling the moving and the operation of gas control valve 146a, 146b, 146c of piston 104 of each syringe 100a, 100b, 100c, no matter gas control valve is to provide with the form of single valve or with the form of a plurality of valves.Therefore, can be in each infusion cycles of molten metal supply system 90 inner control syringe 100a, 100b, 100c, as described further herein.
" central authorities " control module 160 and the hydraulic unit driver 114 of each syringe 100a, 100b, 100c link to each other with gas control valve 146a, 146b, 146c with the operation of the program of the hydraulic unit driver 114 of controlling each syringe 100a, 100b, 100c and operation and gas control valve 146a, 146b, 146c.Pressure sensor 149a, the 149b, the 149c that link to each other with the housing 102 of each syringe 100a, 100b, 100c are used to control module 160 that each input signal is provided.Usually, utilize control module 160 to drive hydraulic unit drivers 114, thereby make at least one the piston 104 among syringe 100a, 100b, the 100c always move through its discharge stroke so that so that constant flow velocity and pressure are transported to motlten metal 134 output manifold 140 continuously basically with the moving and be used for the corresponding gas control valve 146a of syringe 100a, 100b, 100c, the operation of 146b, 146c of the piston 104 of controlling each syringe 100a, 100b, 100c.The piston 104 of remaining syringe 100a, 100b, 100c is in the answer pattern, and wherein piston 104 moves through their backward stroke or finishes their discharge stroke.Like this, as mentioned above, at least one always is in " work " state among syringe 100a, 100b, the 100c, for output manifold 140 provides motlten metal 134, and their backward stroke (perhaps finishing their discharge stroke) is replied and moved through to the piston 104 of remaining syringe 100a, 100b, 100c.
Referring to Fig. 3-5, existing to be included in syringe 100a, the 100b in the molten metal supply system 90 shown in Fig. 2, one operation among the 100c is described.Particularly, now the operation in a complete infusion cycles (that is, backward stroke and discharge stroke) is described to a syringe 100.Fig. 3 shows the syringe 100 that only begins discharge stroke (that is, downward) some place before at piston 104 in housing 102,, has just finished its backward stroke that is.The gas that space 148 between piston head 108 and the motlten metal 134 is come from gas supply source 144 basically is full of, and the gas that comes from gas supply source 144 is supplied to by gas control valve 146.Move back and forth in the process in housing 102 at piston 104, but operating gas control valve 146 supplies to space 148 (that is pressurization), makes space 148 exhausts to reach atmospheric pressure and confining gas filling space 148 under the situation of needs with the gas that will come from gas supply source 144.
As mentioned above, in Fig. 3, piston 104 has been finished its backward stroke and has been prepared discharge stroke of beginning in housing 102.Gas control valve 146 is in the closed position, prevents that the gas in gas filling space 148 from discharging to reach atmospheric pressure.In Fig. 3, the position of piston 104 in housing 102 represented with some D in Fig. 5.Control module 160 send a signal to hydraulic pressure driver 114 so that piston 104 begin to move down by its discharge stroke.When piston 104 moves down in housing 102, gas in gas filling space 148 is at piston head 108 and be received between the motlten metal 134 in the housing 102 and compressed on the spot, reduces its volume greatly and increases pressure in the gas filling space 148.Pressure in the pressure sensor 149 monitoring gas filling spaces 148 and this information supplied to control module 160 as a process value input.
When the pressure in gas filling space 148 reached " critical " level, the motlten metal 134 in the housing 102 began to flow into port one 38 neutralizations by second check-valves 142 and flows out from housing 102.The critical pressure level depends on that motlten metal 134 will be by exporting the downstream process that manifold 140 (as shown in Figure 2) is sent to.For example, output manifold 140 can link to each other with metal extrusion process or metal rolled technology.These technologies will provide returning pressure or " back pressure " that varies in size for syringe 100.Syringe 100 will begin must overcome this back pressure before housing 102 flows out at motlten metal 134.Back pressure value in syringe 100 places experience for example also changes to another from a downstream extrusion process.Like this, motlten metal 134 will begin to depend on technology and determine it also is those skilled in the art's technology for it from the critical pressures that housing 102 flows.Pressure in the gas filling space 148 is by pressure sensor 149 continuous monitorings, and pressure sensor 149 is used to discern motlten metal 134 and begins the critical pressure that flows from housing 102.(that is process value input) offers control module 160 to pressure sensor 149 as input signal with this information.
Move (promptly in the discharge of piston 104, when motlten metal 134 begins when housing 102 flows) near this point, control module 160 is based on the input signal that receives from pressure sensor 149, regulate moving down of hydraulic unit driver 114, moving down (promptly of hydraulic unit driver 114 control pistons 104, speed), regulate motlten metal 134 is discharged to output manifold 140 from housing 102 by port one 38 flow velocity at last.For example, control module 160 can moving down according to the motlten metal flow velocity that needs in output manifold 140 places and the last downstream process quickening or the hydraulic unit driver 114 that slows down.Like this, utilize the control of hydraulic unit driver 114 can control the flow velocity that motlten metal flows to output manifold 140.Heat insulation block piece 150 makes the end of piston head 108 separate with motlten metal 134 in the discharge stroke of piston 104 with Compressed Gas filling space 148 and avoids it directly to contact with motlten metal 134.Particularly, motlten metal 134 was discharged from housing 102 before the heat insulation block piece 150, Compressed Gas filling space 148 and the piston head 108 that float.At last, piston 104 arrives the terminal point of down stroke or discharge stroke, shown in Fig. 5 mid point E.At the destination county of the discharge stroke of piston 104, gas filling space 148 is by tight compression and can produce greater than 20 the extremely high pressure of 000psi.
After piston 104 arrived the terminal point (the some E among Fig. 5) of discharge stroke, piston 104 also can move up in housing 102 and " reset " or backward stroke by weak point.In order to make piston 104 move through reset stroke, control module 160 drives hydraulic unit driver 114 so that piston 104 moves up in housing 102.Move up in housing 102 " resetting " distance of a weak point of piston 104 arrives among Fig. 5 by the position shown in the A.The weak point that is illustrated by the broken lines selectable piston 104 among Fig. 5 resets or backward stroke.Because piston 104 upwards moves the short distance that resets in housing 102, therefore increased the volume of Compressed Gas filling space 148, thereby reduced the gas pressure in the gas filling space 148.As mentioned above, syringe 100 can produce greater than 20 the extremely high pressure of 000psi in gas filling space 148.Therefore, can utilize the short reset stroke of piston 104 in housing 102 as by 146 pairs of gas filling space 148 exhausts of gas control valve partly to discharge the safety device of the pressure in the gas filling space 148 before reaching atmospheric pressure.This device can be worked as when making 148 exhausts of gas filling space protection housing 102, annular pressure seal 120 and gas control valve 146 and is without prejudice.In addition, what those skilled in the art should understand that is, the gas volume that is compressed in the gas filling space 148 is less, even therefore bigger pressure is formed in the gas filling space 148, the stored energy value that is present in the Compressed Gas filling space 148 also is low.
At an A place, utilize control module 160 operating gas control valves 146 make it to be in one open or exhaust position so that the gas in the gas filling space 148 is discharged from reaches atmospheric pressure or be discharged to the gas recovery system (not shown).As shown in Figure 5, before gas control valve 146 is operated described exhaust position, in housing 102, only the bounce back reset stroke of a weak point of piston 104.Then, piston 104 is operated (utilizing control module 169 by hydraulic unit driver 114) with the discharge stroke before moving down and arriving once more in housing 102, represent with some B in Fig. 5.If reset stroke is not followed, gas filling space 148 is deflated at an E place and reaches atmospheric pressure (perhaps gas recovery system) and piston 104 beginning backward stroke in housing 102 once more so, and backward stroke also will begin at Fig. 5 mid point B place.
At a B place, utilize control module 160 operating gas control valves 146 to make it from the exhaust position to the closed position, and piston 104 begin backward stroke or upstroke in housing 102.Utilize hydraulic unit driver 114 to make piston 104 move through backward stroke, send signal for hydraulic unit driver 114 so that piston 104 beginnings move up in housing 102 by control module 160.In the backward stroke of piston 104, motlten metal 134 flows to the housing 102 from feeding molten metal source 132.Particularly, when piston 104 began to move through backward stroke, piston head 108 began to form space 148, and space 148 is in (that is vacuum) under the pressure that is lower than atmospheric pressure at present basically.This makes motlten metal 134 enter housing 102 from feeding molten metal source 132 by first check-valves 136.When piston 104 continued to move up in housing 102, motlten metal 134 was continuously introduced in the housing 102.A specified point place in the backward stroke of piston 104 represents that with some C housing 102 is full of motlten metal 134 at last fully in Fig. 5.Point C also makes the motlten metal 134 of pre-selected amount be received in the point of the preliminary election in the housing.But the most better C is full of the point of motlten metal 134 basically corresponding to the housing 102 that makes in the backward stroke of piston 104.At a C place, utilize control module 160 operating gas control valves 146 to make it arrive a position that housing 102 and gas supply source 144 are circulated, the gas of utilization such as argon or nitrogen forms new gas filling space (that is, " filling gas ") 148 to 148 pressurizations of " vacuum " space.When gas filling space 148 was pressurized, piston 104 continued to move up in housing 102.
At a D (promptly, the destination county of the backward stroke of piston 104) locates, utilize control module 160 operating gas control valves 146 to make it to arrive the closed position, prevent that gas further is filled to be formed on the gas filling space 148 between piston head 108 and the motlten metal 134 and to prevent that gas from discharging and reach atmospheric pressure.Control module 160 sends signals for hydraulic unit driver 114 once more so that piston 104 stops in the housing 102 moves up.As mentioned above, the terminal point of the backward stroke of piston 104 represented by a D in Fig. 5, and can overlap with the complete backward stroke position of piston 104 in housing 102 (that is, piston 104 maximum possible move up), but not necessarily.When piston 104 arrives the terminal point of backward stroke (, the position of the piston 104 shown in Fig. 3), piston 104 can move down by another discharge stroke, and the infusion cycles shown in Fig. 5 begins once more.
It will be understood by those skilled in the art that the gas control valve 146 that is used for above-mentioned infusion cycles can need the gas of the control valve 146 of syringe 100 to supply with the order that is fit to and the independently driving of (that is pressurization) and degassing function (that is port).Wherein gas of the present invention supply with (that is pressurization) and degassing function be by two independently the embodiment that carries out of valve also may need the order driving of valve.The wherein gas control valve 146 of molten metal supply system 90 by two in the syringe 100 independently the embodiment that replaces of valve be illustrated among Fig. 6.In Fig. 6, utilize be used separately as air supply valve and air bleeding valve two independently valve 162,164 carry out gases and supply with and degassing functions.
With reference to the syringe 100a, the 100b that have described, an operation in a complete infusion cycles among the 100c, now the operation of molten metal supply system 90 is described in conjunction with Fig. 2-5 and Fig. 8.Molten metal supply system 90 be suitable for usually sequentially or one by one operating syringe 100a, 100b, 100c so that at least one among syringe 100a, 100b, the 100c be operated so that motlten metal 134 is supplied with output manifolds 140.Particularly, molten metal supply system 90 is suitable for operating syringe 100a, 100b, 100c the piston 104 of remaining injection device 100a, 100b, 100c is replied and moved through their backward stroke or finish their discharge stroke so that the piston 104 of at least one among syringe 100a, 100b, the 100c moves through discharge stroke.
As shown in Figure 7, each syringe 100a, 100b, 100c sequentially follow identical the moving that the front is described in conjunction with Fig. 5 respectively, but begin their infusion cycles so that the arithmetic mean of instantaneous value of their delivery stroke causes being provided for constant motlten metal flow velocity and the pressure of exporting manifold 140 and last downstream process with time of different (that is, " interlock ").The arithmetic mean of instantaneous value of the infusion cycles of syringe 100a, 100b, 100c is represented by dotted line K in Fig. 7.As mentioned above, control module 160 be used to syringe 100a, 100b, 100c and gas control valve 146a, 146b, 146c operation sequencing so that above-mentioned technology operate automatically.
In Fig. 7, it moves down the first syringe 100a in the beginning of some Da place, Da corresponding to the null time (that is, t=0).When the piston 104 of the first syringe 100a is followed its discharge stroke in the described mode of reference Fig. 5.In the discharge stroke of the piston 104 of the first syringe 100a, syringe 100a supplies to output manifold 140 by its port one 38 with motlten metal 134.When the piston 104 of the first syringe 100a during near the some Na place of the terminal point of its discharge strokes, the piston 104 of the second syringe 100b begins its discharge stroke at a Nb place.The piston 104 of the second syringe 100b is followed its discharge stroke in the described mode of reference Fig. 5 and is taken over basically motlten metal 134 is supplied to output manifold 140.As shown in FIG. 7, the discharge stroke of the piston 104 of the first and second syringe 100a, 100b overlapping terminal point (representing) that arrives its discharge stroke until the piston 104 of the first syringe 100a in the short time by an Ea.
Behind piston 104 point of arrival Ea of the first syringe 100a (that is, the terminal point of discharge stroke), can make the first syringe 100a by lacking reset stroke and carrying out the front with reference to the described deairing step of Fig. 5.Then, piston 104 returned the terminal point (at a Ba place) of discharge stroke before its backward stroke of beginning.Perhaps, can make the first syringe 100a make 148 exhausts of gas filling space, and its piston 104 can begin a backward stroke with reference to the described mode of Fig. 5 at a Ba place in the front at an Ea place.
When the piston 104 of the first syringe 100a moved through its backward stroke, the piston 104 of the second syringe 100b moved to the some Nb place near the terminal point of discharge stroke.Basically with the second syringe 100b of point of arrival Nb simultaneously, the piston 104 of the 3rd syringe 100c begins to move through its discharge stroke at a Dc place.The first syringe 100a continues it simultaneously and moves up and be preferably in a Ca place and be full of motlten metal 134 fully once more.The piston 104 of the 3rd syringe 100c is followed its discharge stroke with the front with reference to the described mode of Fig. 5, and the 3rd syringe 100c now basically from the first and second syringe 100a, 100b take over motlten metal 134 supply to output manifold 140.But as shown in FIG. 7, the discharge stroke of the piston 104 of the second and the 3rd syringe 100b, 100c is overlapped in the short time and is arrived the terminal point (being represented by an Eb) of its discharge stroke until the piston 104 of the second syringe 100b.
Behind piston 104 point of arrival Eb of the second syringe 100b (that is, the terminal point of discharge stroke), can make the second syringe 100b by lacking reset stroke and carrying out the front with reference to the described deairing step of Fig. 5.Then, piston 104 returned the terminal point (at a Bb place) of discharge stroke before its backward stroke of beginning.Perhaps, can make the second syringe 100b make 148 exhausts of gas filling space, and its piston 104 can begin a backward stroke with reference to the described mode of Fig. 5 at a Bb place in the front at an Eb place.At the points of proximity Ab place of the piston 104 of the second syringe 100b, the first syringe 100a replys and prepares another discharge stroke basically fully.Like this, when the 3rd syringe 100c arrived the terminal point of its discharge stroke, the first syringe 100a prepared to take over motlten metal 134 is supplied to output manifold 140.
The first syringe 100a stops the some Nc place of intermittent phase Sa until the terminal point of piston 104 close its discharge strokes of the 3rd syringe 100c at a Da place.The piston 104 of the second syringe 100b moves through its backward stroke simultaneously and the second syringe 100b replys.Behind intermittent phase Sa, piston 104 another discharge strokes of beginning of the first syringe 100a think that output manifold 140 provides continuous molten metal stream.At last, the piston 104 of the 3rd syringe 100c reaches the terminal point (at an Ec place) of its discharge stroke.
After piston 104 point of arrival Ec of the 3rd syringe 100c (that is, the terminal point of discharge stroke) locate, can make the 3rd syringe 100c by lacking reset stroke and carrying out the front with reference to the described deairing step of Fig. 5.Then, piston 104 returned the terminal point (at a Bc place) of discharge stroke before its backward stroke of beginning.Perhaps, can make the 3rd syringe 100c make 148 exhausts of gas filling space, and its piston 104 can begin a backward stroke with reference to the described mode of Fig. 5 at a Bc place in the front at an Ec place.At an Ac place, the second syringe 100b replys fully basically and prepares to take over motlten metal 134 is supplied to output manifold 140.But, make the second syringe 100b be in intermittent phase Sb piston 104 its backward strokes of beginning until the 3rd syringe 100c.In intermittent phase Sb, the first syringe 100a supplies to output manifold 140 with motlten metal 134.When the piston 104 of the first syringe 100a makes the 3rd syringe 100c be in similar intermittent phase Sc near the terminal point (some Na) of its discharge stroke once more.
Briefly, as previously described, above-mentioned technology is continuous and by control module 160 control.Syringe 100a, 100b, 100c are driven with the infusion cycles that sequentially or one by one moves through them by control module 160 respectively so that at least one among syringe 100a, 100b, the 100c supplied with output manifolds 140 with motlten metal 134.Like this, the piston 104 of at least one of syringe 100a, 100b, 100c moves through its discharge stroke, and remaining piston 104 of syringe 100a, 100b, 100c moves through their backward stroke or finishes their discharge stroke.
Fig. 8 shows second embodiment of molten metal supply system of the present invention and represents with Reference numeral 190.Molten metal supply system 190 shown in Fig. 8 is similar with above-mentioned molten metal supply system 90, the form that molten metal supply system 190 can be configured to utilize the liquid medium operation now rather than utilize the gas medium operation.Molten metal supply system 190 comprises a plurality of motlten metal syringes 200, for the sake of clarity, uses " a ", " b ", " c " and " d " to represent these syringes respectively.Syringe 200a, 200b, 200c and foregoing syringe 100a, 100b, 100c are similar, but are particularly suitable for utilizing viscous liquid source and pressure medium operation now. Only syringe 200a, 200b, 200c and their parts are described below with respect to single syringe " 200 ".
As mentioned above, syringe 200 is that with reference to described syringe 100 differences of Fig. 3-Fig. 5 syringe 200 is particularly suitable for using liquid medium as viscous liquid source and pressure medium with the front.For this reason, molten metal supply system 190 also comprise on housing 202 tops that are positioned at each syringe 200a, 200b, 200c and with the liquid chamber 224 of housing 202 circulations.Liquid chamber 224 is filled with liquid medium 226.Preferably a kind of high viscosity liquid of liquid medium 226 is such as fuse salt.A kind ofly be applicable to that the viscous liquid of liquid medium is a boron oxide.
Similar as above-mentioned syringe 100, the piston 204 of syringe 200 is suitable in housing 202 back and forth operation and removable by making motlten metal be received in the backward stroke in the housing 202 and motlten metal being discharged to the discharge stroke of downstream process from housing 202.But piston 204 also is suitable for upwards bouncing back in liquid chamber 224.Lining 230 is arranged on the inner surface of housing 202 of syringe 200, and can be made by any materials that the front is described with reference to lining 130.
Molten metal supply system 190 also comprises feeding molten metal source 232.Provide feeding molten metal source 232 to keep motlten metal 234 is supplied to the standby supply of the housing 202 of each syringe 200a, 200b, 200c.Feeding molten metal source 232 can hold any metal or the metal alloy that the front is described with reference to molten metal supply system 90.
Molten metal supply system 190 also comprises the output manifold 240 that is used for motlten metal 234 is supplied to upstream device or technology.Syringe 200a, 200b, 200c circulate with output manifold 240 respectively.Particularly, the port 238 of each syringe 200a, 200b, 200c is as the inlet or the import that enter each syringe 200a, 200b, 200c, and the motlten metal 234 that is used for discharging from the housing 202 of each syringe 200a, 200b, 200c distributes (that is injection) to output manifold 240.
The piston head 208 of syringe 200 can adopt cylindrical and be received in the cylindrical shell 202.Piston head 208 also has the groove 248 of circumferential extension.Being provided with when groove 248 upwards retracts in the liquid chamber 224 in its backward stroke with convenient piston 204 makes liquid medium 226 from liquid chamber 224 filling grooves 248.Groove 248 keeps being filled with liquid medium 226 in the backward stroke of piston 204 and discharge stroke.But, upwards enter each backward stroke in the liquid chamber 224 for piston 204, the liquid medium 226 filling grooves 248 that " newly " supplied with.For the liquid medium 226 that comes from liquid chamber 224 is remained in the groove 248, piston head 208 has slightly the external diameter less than housing 202 internal diameters.Therefore, in the operating process of syringe 200, almost not wearing and tearing between piston head 208 and the housing 202, and the motlten metal 234 that high viscosity liquid medium 226 prevents to be received in the housing 202 upwards flow in the liquid chamber 224.
The end that has groove 248 in the piston head 208 can be save fully, so that in the backward stroke and discharge stroke of piston 204, at piston head 208 be received in and have a dielectric liquid layer or post 226 between the motlten metal 234 in the housing 202 and be used for before the piston 204 at syringe 200 from housing 202 compressing motlten metals 234." the gas filling space " of this and foregoing syringe 100 is similar.
Owing to be contained in the larger volume of the liquid medium 226 in the liquid chamber 224, syringe 200 need not to carry out the inside cooling usually as the situation of foregoing syringe 100.In addition, because syringe 200 utilizes the liquid medium operation, the gas sealing structure (that is annular pressure seal) that therefore is used for syringe 100 is unwanted.Like this, the front does not need with reference to syringe 100 described cooling jackets 128 yet.As mentioned above, a kind ofly be applicable to that the liquid of liquid medium 224 is fuse salts, such as boron oxide, when particularly the motlten metal in being contained in feeding molten metal source 232 234 is a kind of acieral.The liquid medium 226 that is contained in the liquid chamber 224 is any liquid of chemical inertness or repellence (that is, not reacting basically) with respect to the motlten metal 234 that is contained in the feeding molten metal source 232.
With with the molten metal supply system 190 shown in the above-mentioned molten metal supply system 90 similar mode application drawings 8, between their operation only by small variation.For example, because syringe 200a, 200b, 200c utilize a kind of liquid medium operation rather than gas medium, therefore need not gas control valve 146a, 146b, 146c and syringe 200a, 200b, 200c are moved through with reference to described " resetting " stroke of Fig. 5 and exhaust air technique.On the contrary, liquid chamber 224 is used for syringe 200a, 200b, 200c pressurization for syringe 200a, 200b, 200c provide the standby supply of liquid medium 224, liquid medium 224.Liquid medium 224 also can be the advantage that syringe 200a, 200b, 200c provide some cooling.
To continue below the operation of molten metal supply system 190 to be described with reference to Fig. 8.Whole technology described here is controlled by control module 260 (PC/PLC), the operation of the hydraulic unit driver 214 that control module 260 controls link to each other with the piston 204 of each syringe 200a, 200b, 200c and mobile, thus moving of each piston 204 controlled.As foregoing molten metal supply system 90, control module 260 order or in turn injector-actuated 200a, 200b, 200c so that motlten metal stream is supplied to output manifold 240 continuously with constant basically operating pressure.It will be understood by those skilled in the art that such order or in turn driving is that suitable control by hydraulic unit driver 214 that the piston 204 with each syringe 200a, 200b, 200c is linked to each other realizes.
In Fig. 8, the piston 204 of the first shown syringe 200a is in the destination county of its discharge stroke, just motlten metal 234 has been expelled in the output manifold 240.The piston 204 of the second syringe 200b moves through its discharge stroke and has taken over motlten metal 234 is supplied in the output manifold 240.The 3rd syringe 200c has finished its backward stroke and complete " filling " new motlten metal 234.The piston 204 of the 3rd syringe 200c the pick of in its backward stroke (as shown in Figure 8) make progress in the retraction liquid chamber 224 so that be formed in the piston head 208 groove 248 basically with liquid chamber 224 in liquid medium 226 circulations.Be filled with the liquid medium 226 of " newly " in the groove 248.Perhaps, piston 204 can make progress fully in the retraction liquid chamber 224 so that the layer of liquid medium 226 or post with the end of piston 204 be received in that motlten metal 234 in the housing 202 separates and the surface is in contact with it." the gas filling space " of this situation and foregoing syringe 100a, 100b, 100c is similar.The piston 204 of remaining syringe 200a, 200b will be followed in their backward stroke similarly and move.
After the second syringe 200b finishes its discharge stroke, the hydraulic unit driver 214 that control module 260 drivings link to each other with the piston 204 of the 3rd syringe 200c supplies to motlten metal 234 in the output manifold 240 thereby the 3rd syringe 200c is taken over so that piston 204 moves through its discharge stroke.Then, when the 3rd syringe 200c finishes its discharge stroke, control module 260 drives the hydraulic unit driver 214 that links to each other with the piston 204 of the first syringe 200a once more so that piston 204 moves through its discharge stroke, thereby the first syringe 200a is taken over motlten metal 234 is supplied in the output manifold 240.Like this, control module 260 order or successively operating syringe 200a, 200b, 200c so that above-mentioned technology (promptly, the staggered infusion cycles of syringe 200a, 200b, 200c) realizes automatically, thereby serve as that output manifold 234 provides successive molten metal flow 234 with a kind of constant basically pressure.
Each of syringe 200a, 200b, 200c (that is, backward stroke and discharge stroke) in their infusion cycles is operated in an identical manner.In each the backward stroke of piston 204 of syringe 200a, 200b, 200c, in housing 202, form pressure below atmospheric pressure (promptly, vacuum), make motlten metal 234 enter housing 202 from feeding molten metal source 232 by first check-valves 236.When piston 204 continued to move up, the motlten metal 234 that comes from feeding molten metal source 232 flowed into filling housing 202 in piston head 208 back.But, be present in the groove 248 and the high viscosity liquid medium 226 of housing 202 tops prevents that motlten metal 234 from flowing upward in the liquid chamber 224.Be present in the groove 248 and the high viscosity liquid medium 226 of housing 202 tops provides a kind of and can prevent that motlten metal 234 from upwards flowing and can make piston 204 produce the effect of " adhesive seal " of high pressure in housing in the discharge stroke of the piston 204 of each syringe 200a, 200b, 200c.It will be understood by those skilled in the art that viscous liquid medium 226 is present in around piston head 208 and the piston rod 206 and filling groove 248.Like this, be contained in the housing 202 that (that is, around piston head 208 and piston rod 206) liquid medium 226 separates the motlten metal 234 that flow into the housing 202 from liquid chamber 224, and the effect of a kind of " adhesive seal " is provided in housing 202.
In each the discharge stroke of piston 204 of syringe 200a, 200b, 200c, first check-valves 236 prevents that in first check-valves, the 136 similar modes with syringe 100a, 100b, 100c motlten metal 234 is back in the feeding molten metal source 232.Be present in the groove 248 and around piston head 208 and the piston rod 206 and the liquid medium 226 above in housing 202 produced in motlten metal 234 of discharging and the adhesive seal effect between the liquid medium 226 the liquid chamber 224 from housing 202.In addition, be present in the groove 248 and around piston head 208 and the piston rod 206 and the liquid medium 226 above in housing 202 in the down stroke of piston 204, be compressed, the generation high pressure extrudes from housing 202 with the motlten metal 234 that will be received in the housing 202 housing 202 in.Because liquid medium is incompressible basically, so syringe 200 reaches " critical " pressure that the front is described with reference to syringe 100 very soon.When motlten metal 234 begins when housing 202 flows, hydraulic unit driver 215 can be used for controlling the motlten metal flow velocity that motlten metal 234 is transported to downstream process of each corresponding syringe 200a, 200b, 200c.
Briefly, sequentially injector-actuated 200a, 200b, 200c export manifold 240 so that motlten metal 234 is supplied to continuously to control module 260.This can be by syringe 200a, 200b, 200c piston 204 move staggered so that at least one piston 204 always moves through discharge stroke realizes.Therefore, motlten metal 234 is supplied with continuously and with constant basically operation or tonnage motlten metal 234 is supplied to output manifold 240.
At last, referring to Fig. 8 and Fig. 9, shown molten metal supply system 200 links to each other with above-mentioned output manifold 240.Shown output manifold 240 can supply to motlten metal 234 an exemplary downstream technology.This exemplary downstream technology is continuous extrusion apparatus 300.Extrusion equipment 300 is suitable for forming the solid circles bar with even cross section.Extrusion equipment 300 comprises a plurality of extruded conduits 302, and each extruded conduit 302 is suitable for forming single circular pin.Extruded conduit 302 comprises a heat exchanger 304 and output pressing mold 306 respectively.Each heat exchanger 304 can receive motlten metal 234 from described output manifold 240 with 240 circulations of output manifold (respectively by corresponding extruded conduit 302), described output manifold 240 under the influence of motlten metal syringe 200a, 200b, 200c.Motlten metal syringe 200a, 200b, 200c are provided under constant compression force motlten metal 234 is expelled in the output manifold 240 and motlten metal 234 are transported to the required power of corresponding extruded conduit 302.Provide heat exchanger 304 so that in the operating process of molten metal supply system 190, make motlten metal 234 cooling and the partial coagulations that flow to output pressing mold 306 by it.The size and dimension of output pressing mold 306 can form has the solid hopkinson bar of uniform cross-sectional area basically.A plurality of water spray pipes 308 can be arranged on each extruded conduit 302 output pressing mold 306 the downstream so that the bar that forms solidify fully.Above-mentioned extrusion equipment 300 only is the upstream device that can be used in combination with molten metal supply system 90,190 of the present invention or one type example of technology.As mentioned above, the molten metal supply system 90 of gas-operated also can be used in combination with extrusion equipment 300.
Referring now to Figure 10-25, wherein show the downstream metal forming technology of specific application molten metal supply system 90,190.Be described with reference to 90 pairs of downstream metal forming technologies of the molten metal supply system shown in Fig. 2 below, wherein said molten metal supply system 90 arrives this technology with feeding molten metal.But, but the obvious also molten metal supply system shown in the application drawing 8 190.
Figure 10 shows the equipment 400 that is used to form the continuous metal goods 402 that a plurality of length do not limit prevailingly.This equipment comprises above-mentioned manifold 140, is referred to as " output manifold " below.Output manifold 140 receives motlten metal 132 from molten metal supply system 90 in the above described manner with the flow velocity and the pressure of substantial constant.Motlten metal 132 remains under the certain pressure in output manifold 140.Equipment 400 also comprises a plurality of output pressing molds 404 that link to each other with output manifold 140.Output pressing mold 404 can go into shown in Figure 10 to fixedly connected with output manifold 140 or form with the main body of output manifold 140 is whole.Utilize conventional securing member 406 (that is bolt) that output pressing mold 404 is linked to each other with output manifold 140.The material of the output pressing mold 404 shown in Figure 10 is different from output manifold 140, but also can utilize and export manifold 140 identical materials are made and with its whole formation.
Referring to Figure 10-12, each output pressing mold 404 comprises pressing mold housing 408, and pressing mold housing 408 is fixed on the output manifold 140 in the above described manner.The pressing mold housing 408 of each output pressing mold 404 has the center die passageway 410 that communicates with output manifold 140.Pressing mold housing 408 has and is used for corresponding metal goods 402 from pressing mold hole 412 that output pressing mold 404 is discharged.Die passageway 410 is provided for motlten metal is transported to the conduit in pressing mold hole 412 from output manifold 140, and described pressing mold hole 412 is used to make metallic article 402 to form its desirable shape of cross sections.Output pressing mold 404 can be used for producing the continuous metal goods 402 of same type or dissimilar metallic articles 402, further describes as the back.In Figure 10, two output pressing molds 404 are suitable for metallic article 402 is made the pipe of the circular cross section of the annular that has as shown in Figure 12 b or hollow cross-section, and two output pressing molds 404 are suitable for metallic article 402 is made solid hopkinson bar or the rod with the circular cross section as shown in Figure 11 b.
The pressing mold housing 408 of each output pressing mold 404 also has cooling chamber 414, and described cooling chamber 414 surrounds die passageway 410 at least in part so that the motlten metal 132 that the die passageway 410 of flowing through arrives pressing mold hole 412 obtains cooling.Cooling chamber 414 also can adopt the form as Figure 18 or cooling duct shown in Figure 19, and the back is with described.Provide cooling chamber 414 so that the motlten metal 132 in the die passageway 410 cools off and solidifies, thereby before motlten metal arrives pressing mold hole 412, it is fully cooled off.
A plurality of rollers 416 can be exported pressing mold 404 gangs with each.Roller 416 contacts formed metallic article 402 in the downstream in corresponding pressing mold hole 412, particularly is frictionally engaged with metallic article 402 and thinks that the motlten metal 132 in the output manifold 140 provides back pressure.Roller 416 is also as the arrestment mechanism that metallic article 402 is slowed down from the discharge of output pressing mold 404.Because that produced by molten metal supply system 90 and be present in high pressure in the output manifold 140, it is useful that brakes slows down from the discharge of output pressing mold 404 for metallic article 402.This guarantees that metallic article 402 fully solidified and cooled off before discharging from output pressing mold 404.A plurality of cooling spray pipes 418 can be positioned at the downstream of output pressing mold 404 so that further cool off from the metallic article 402 of exporting pressing mold 404 discharges.
As mentioned above, Figure 10 show have two be suitable for forming have circular annular cross section metallic article 402 (promptly, pipe) output pressing mold 404 and two equipment 400 that are suitable for forming the output pressing mold 404 of metallic article 402 (that is bar) with circular solid cross-section.Like this, equipment 400 can be produced dissimilar metallic article 402 simultaneously.Described equipment 400 shown in Figure 10 comprises that four output pressing molds 404 and two are used to produce the metallic article 402 of annular cross section and the specific set-up mode of two metallic articles 402 that are used for the production solid cross-section only is the example that is used to illustrate described equipment 400, the invention is not restricted to this specific arrangement form.Four output pressing molds 404 shown in Figure 10 can be used for producing four kinds of dissimilar metallic articles 402.In addition, the use of four output pressing molds 40 only is exemplary, and according to the present invention, equipment 400 can have the output pressing mold 404 of any amount.In equipment 400, only need an output pressing mold 404.
Now the output pressing mold 404 of the metallic rod that is used to form solid cross-section is described with reference to Figure 10-Figure 11.Output pressing mold 404 among Figure 10 and Figure 11 also is included in the tear-drop shaped chamber 420 of 412 upstreams, pressing mold hole.Chamber 420 has to be dispersed-contraction shape, is referred to as below to disperse-restrain chamber 420.Disperse-restrain chamber 420 and be positioned at the dead ahead of annular cooling chamber 414.Disperse-restrain chamber 420 and be used for cold working is carried out in the frozen metal of die passageway 410, before discharge by pressing mold hole 412 frozen metal, motlten metal 132 in by die passageway 410 by cooling chamber 414 define regional the time solidify.Particularly, motlten metal 132 flow into the output pressing mold 404 by die passageway 410 from output manifold 140.The pressure that is provided by molten metal supply system 90 flow in the output pressing mold 404 motlten metal 132.Motlten metal 132 keeps its molten conditions until zone that motlten metal 132 is defined by cooling chamber 414 in by die passageway 410.Motlten metal 132 becomes semisolid in this zone, and is preferably in to arrive and disperses-restrain chamber 420 and fully solidify before.Semi-solid-state metal and the metal that fully solidifies are represented with Reference numeral 422 and 424 respectively here.
The frozen metal 424 of dispersing-restraining in the chamber 420 has as-cast structure, and this is not favourable.Disperse-restrain the dispersing of chamber 420-contraction shape to frozen metal 424 processing, forms a kind of microstructure of processing the back or processing.The microstructure of processing is improved the intensity of formed metallic article 420, and in this case, a kind of bar of solid cross-section has circle.This technology and metal cold working are similarly to improve its intensity and other character, and this is known in this area.Discharge to form continuous metal goods 402 by pressing mold hole 412 under pressure the frozen metal 424 of processing.In this case, as mentioned above, metallic article 412 is metallic rod 402 of a kind of solid cross-section.
It will be understood by those skilled in the art that the above-mentioned technology that is used to form metallic article 402 (that is solid round rod) has a plurality of advantages in mechanical aspects.Molten metal supply system 90 is transported to equipment 400 with constant compression force and flow velocity with motlten metal 132, so this is " stand-by state " system.Therefore, formed metallic article 402 length are not limited in theory.Owing to do not have the transient phenomena of " pressing mold pressure " and " mould temperature ", therefore can control the size of the cross section of metallic article 402 preferably.Can also come controlling dimension preferably by the length (that is no transient phenomena) of metallic article 402.In addition, extrusion ratio can not depend on technological requirement based on properties of product.Can reduce extrusion ratio, thereby prolong the extruding life-span in pressing mold hole 12.In addition, because low pressing mold pressure (that is, high temperature, low speed) therefore has very little crimp.
It will be understood by those skilled in the art that the above-mentioned technology that is used to form metallic article 402 (that is solid round rod) has a plurality of advantages aspect metallurgical.These advantages generally include: (a) eliminate surface segregation and shrinkage cavity; (b) reduce gross segregation; (c) need not needed in the art homogenizing and The pre-heat treatment; (d) increase the possibility that obtains non-recrystallization texture (that is low Z distortion); (e) seam weldering (describing) preferably in tubular structure as following; (f) utilize the length of metallic article 402 and eliminate structural change owing to the stand-by state character of forming technology.
From the angle of economy, above-mentioned technology eliminated the processing stock and will cast, preheat, heating and pressing steps are integrated in the step again, above-mentioned these steps are present in the prior art processes of describing referring to Fig. 1 the front.In addition, in described technology, do not have the metal of waste, but have such problem in the prior art processes of describing in front.Usually, in the related in the prior art extrusion process, the product that is extruded must be cut edge and/or scale removal, and is unwanted in method involved in the present invention.Above-mentioned all advantages all are applied on each different metal goods 402 in the equipment of being formed on 400, and the back is described.
Now referring to Figure 10 and Figure 12, equipment 400 can be used for forming the metallic article 402 with annular or hollow cross-section, the hollow tube shown in Figure 12 b.The equipment 400 that is used for this application also comprises the plug 426 that is positioned at die passageway 410.Plug 426 preferably extends in the output manifold 140, as shown in Figure 10.Preferably, plug 426 is cooled off cooling agent in inside by being circulated in plug 426 inside.Cooling agent can be fed into plug 426 by the conduit 428 that extends to plug 426 centers.Chamber 420 is dispersed-restrained to utilization so that by 412 extrusion of pressing mold hole or before discharging frozen metal 424 metal 424 that solidifies is being processed to organize after the formation processing in frozen metal 424 once more, thereby formed the metallic article 402 (that is round tube) of annular cross section.Resulting annular cross section metallic article 402 is " seamless ", that is, the welding method that need not to adopt usually in the manufacturing of pipeline or pipe forms circular configuration.In addition, because motlten metal 132 solidify out into loop configuration, in the process of setting of further not handling, it is very thin that the wall of resulting hollow tube can be made, and this may make the performance of metal be subjected to bad influence.
As disclosed here, term " circle " is not to only limit to real circle, and comprises such as oval-shaped other " circles " (that is non-perfect circular shape).The front is suitable for forming the metallic article 402 with symmetrical circular cross section with reference to the output pressing mold 404 of Figure 11 and Figure 12 description.Here employed term " symmetrical cross-sections " refers to, and the vertical cross-section by metallic article 402 is a symmetry with respect at least one axis by this cross section.For example, the circular cross section of Figure 11 b is symmetrical with respect to diameter of a circle.
Figure 13-16 shows an embodiment of the output pressing mold 404 that is used to form polygon metallic article 402.As shown in Figure 14-16, formed metallic article 402 has L shaped cross section.Particularly, can find out significantly from Figure 14-16 that L shaped (being the polygon cross section) is asymmetric with respect to any one axis by it.Therefore, equipment 400 of the present invention can be used for forming the metallic article 402 of asymmetric shape, such as L shaped that is formed by the output pressing mold 404 among Figure 13-16.
Output pressing mold 404 among Figure 13-16 is similarly with foregoing output pressing mold 404 basically, but does not comprise that is dispersed-restrain a chamber 420.Perhaps, die passageway 410 has constant cross section, and described constant cross section has the shape of required metallic article 402, shown in the sectional view as shown in Figure 14.Motlten metal 132 passes through die passageway 410 in foregoing mode, and solidifies in the zone of being defined by cooling chamber 414.By organizing after the required processing that the frozen metal is processed to form frozen metal 424 at 412 places, pressing mold hole.Particularly, when forcing frozen metal 424 to enter small cross section when zone that is limited by pressing mold hole 412 from the bigger transverse cross-sectional area that is limited by die passageway 410, frozen metal 424 is processed organizes after forming required processing.Die passageway 410 is not limited to have the shape of cross section identical with formed metallic article 402.Die passageway 410 can have circle, thereby makes it can be used for the die passageway 410 of the output pressing mold 404 among Figure 11 and Figure 12.The die passageway 410 of the output pressing mold of Figure 13-Figure 16 also can comprise disperses-restrains chamber 420.Figure 13 organizes after showing and forming the required processing of frozen metal 424 by the pressing mold hole 412 that forces the cross-sectional area that frozen metal 424 limited less than the die passageway 410 by the upstream by cross-sectional area.Die passageway 410 can have the shape identical with pressing mold hole 412, but the invention is not restricted to this structure.
Referring to Figure 22-25, other shape of cross sections also can be used for by equipment 400 formed continuous metal goods 402 of the present invention simply.Figure 22 and Figure 23 show symmetry, the polygonal cross section metallic article 402 that can utilize the present invention to make.Figure 22 shows a kind of polygon I-girder that utilizes output pressing mold 404 manufacturings with I shape pressing mold hole 412.Figure 23 shows a kind of solid polygon bar that utilizes output pressing mold 404 manufacturings with hexagonal pressing mold hole 412.The hexagonal cross-section metallic rod 402 that is formed by the output pressing mold 404 of Figure 23 can be called as a kind of special-shaped bar.Figure 24 shows a kind of endless metal goods 402, and wherein the opening in the metallic article 402 has the shape of the global shape that is different from metallic article 402.In Figure 24, opening in the metallic article 402 or ring are square, and the global shape of metallic article 402 is circular.This can utilize the square plug 426 in the output pressing mold 404 of Figure 12 to realize.In addition, Figure 25 shows the have whole polygonal shape annular cross section metallic article 402 of (that is square).Pressing mold hole 412 in the output pressing mold 404 of Figure 25 is for square and use a kind of square plug 426 to form square openings or ring in metallic article 402.The metallic article 402 of Figure 25 can be called as shape tube.
Referring to Figure 17, the present invention predicts, can use the additional or second output pressing mold with the cross-sectional area that further reduces metallic article 402 and to the frozen metal 424 that forms metallic article 402 further processing organize with the required processing of further improvement back.Figure 17 shows second or the downstream output pressing mold 430 that links to each other with first or upstream output pressing mold 404.Machanical fastener shown in can utilizing (such as bolt) makes the second output pressing mold 430 link to each other with output pressing mold 404, perhaps can form with output pressing mold 404 integral body.The embodiment of the output pressing mold 404 shown in Figure 17 has and the output pressing mold 404 similar structures shown in Figure 13, but also can have the structure (that is, have disperse-restrain chamber 420 etc.) of the output pressing mold 404 of Figure 11.Similar with above-mentioned output pressing mold 404, the second output pressing mold 430 comprises the housing 434 with die passageway 436 and pressing mold hole 438.The cross-sectional area in the second pressing mold hole 438 is less than second die passageway 436.When second die passageway 436 extrudes by the second pressing mold hole 438, carry out further cold working when frozen metal 424, further organize and improve the intensity of metallic article 402 after the processing of the frozen metal 424 of improvement formation metallic article 402.As shown in FIG., the position of the second output pressing mold 430 can be close to upstream output pressing mold 404, perhaps in output position far away, pressing mold 404 downstreams.The second output pressing mold 430 also provides one to be used for making frozen metal 424 make the additional cooled region of frozen metal 424 coolings before leaving equipment 400, thereby improves the performance of the frozen metal 424 that forms metallic article 402.
Referring to Figure 18 and Figure 20, described equipment 400 can be suitable for forming the continuous metal sheet as metallic article 402.The output pressing mold 404 of Figure 18 has die passageway 410, and die passageway 410 is tapered towards pressing mold hole 412.Pressing mold hole 412 can form the rectangular cross section of the continuous slab goods 402 shown in Figure 20.Utilize a pair of cooling duct 440,442 to replace cooling chamber 420, cooling duct 440,442 defines the length of die passageway 410, as shown in figure 18, motlten metal 132 cools off in die passageway 410 to form semi-solid-state metal 422 and final set metal 424 in die passageway 410.Frozen metal 424 is forced out by the small cross sectional that is limited by pressing mold hole 412, begins frozen metal 424 processing are organized after forming required processing.Perhaps, utilize the roller 416 that is close to pressing mold hole 412 further to reduce the height H of continuous slab 402, further the back tissue is processed in continuous slab 402 processing and formation.Continuous slab 402 can have any length, and this is because be that equipment 400 provides motlten metal 132 with a kind of form of stand-by state.Like this, equipment 400 of the present invention can also provide rolled sheet except solidifying the bar or the bar that provide above-mentioned.The pair rolling operation that can add in the downstream of roller 416.
Referring to Figure 19 and Figure 21, equipment 400 can be suitable for forming the continuous metal ingot as metallic article 402.The output pressing mold 404 of Figure 19 has the die passageway 410 that is divided into two parts.The first 450 of die passageway 410 has constant cross-section.The second portion 452 of die passageway 410 is dispersed gradually to form pressing mold hole 412.Pressing mold hole 412 can form the shape of cross section of the ingot 402 shown in Figure 21.But the circle shown in the polygon shown in shape of cross section Figure 21 a or Figure 21 b.Utilize a pair of cooling duct 454,456 to replace cooling chamber 420, cooling duct 440,442 defines the length of the first 450 of die passageway 410, as shown in figure 19.Motlten metal 132 cools off in die passageway 410 to form semi-solid-state metal 422 and final set metal 424 in the first 450 of die passageway 410.When frozen metal 424 arrives the bigger part 452 of second cross-sectional area of die passageway 410, preferably make semi-solid-state metal 422 fully cooling to form frozen metal 424.The small cross sectional that limits from the first 450 by die passageway 410 when frozen metal 424 outwards diffuses to the comparatively large cross-sectional area that the second portion 452 by die passageway 410 limits, and begins frozen metal 424 processing are organized after forming required processing.In addition, utilize the roller 416 that is close to pressing mold hole 412 further to reduce the width W of continuous ingot 402, further the back tissue is processed in continuous ingot 402 processing and formation.Continuously ingot 402 can have any length, and this is because be that equipment 400 provides motlten metal 132 with a kind of form of stand-by state.Like this, equipment 400 of the present invention can also provide the ingot of any Len req except solidifying the continuous slab, bar or the bar that provide above-mentioned.
Use above-mentioned continuous processing can form the continuous metal goods of any length and any shape of cross section.Foregoing is understood the formation of continuous metal bar, bar, ingot and plate specifically.Use above-mentioned technology can form solid and the annular cross section shape.Such annular forms seamless pipe, such as hollow tube or pipeline.Above-mentioned technology can also form the metallic article with symmetry and asymmetric cross section.Briefly, the continuous metal forming technology shown in here can (but being not limited to): (a) provide high volume, low extrusion ratio material shape; (b) provide high-quality, thin-walled, seamless metal goods, such as the pipe or the pipeline of hollow; And (d) provide need not quenching or Ageing Treatment and do not have quenching distortion and very low residual stress non-heat-treatable, do not have distortion, F tempered metal goods.
Although the preferred embodiments of the present invention are described, under the situation that does not break away from the spirit and scope of the present invention, can carry out various modification and replacement here to the present invention.Protection scope of the present invention is limited by appended claims and equivalents thereof.
Claims (12)
1. equipment that is used to form the continuous metal goods that length do not limit comprises:
The output manifold, described output manifold is configured for molten metal sources and circulates;
A plurality of output pressing molds, a plurality of output pressing molds are configured for and form the continuous metal goods that a plurality of length are not limit with output manifold circulation, output pressing mold, and each output pressing mold also comprises:
The pressing mold housing that links to each other with described output manifold, described pressing mold housing has the pressing mold hole, described pressing mold hole is configured for the shape of cross section that forms the continuous metal goods that leave the output pressing mold, the pressing mold housing defines and exports manifold circulation and is used for metal is transported to the die passageway in output pressing mold hole, and the pressing mold housing also limits around the coolant chamber of at least a portion of described die passageway so that the motlten metal cooling that receives from the output manifold and solidify and move to the pressing mold hole by die passageway.
2. equipment as claimed in claim 1 is characterized in that, the die passageway of at least one output pressing mold defines dispersing-contraction section in upstream, corresponding pressing mold hole.
3. equipment as claimed in claim 1 is characterized in that, the die passageway of at least one output pressing mold comprises that the plug that is positioned at wherein is to form the metallic article of annular cross section.
4. equipment as claimed in claim 1, it is characterized in that, also comprise a plurality of rollers, described a plurality of roller and each output pressing mold is united mutually and is in such position, promptly contacts formed metallic article in each downstream, pressing mold hole to be frictionally engaged metallic article and be that motlten metal in the manifold provides back pressure.
5. equipment as claimed in claim 1 is characterized in that, the cross-sectional area of at least one die passageway of described output pressing mold is greater than the cross-sectional area in corresponding pressing mold hole.
6. equipment as claimed in claim 1 is characterized in that, the cross-sectional area of at least one die passageway of described output pressing mold is less than the cross-sectional area in corresponding pressing mold hole.
7. equipment as claimed in claim 1, it is characterized in that, the cross-sectional area of the die passageway of at least one output pressing mold is greater than the cross-sectional area in corresponding pressing mold hole, also comprise the second output pressing mold, the described second output pressing mold is positioned at the downstream of at least one output pressing mold, and the second output pressing mold defines the pressing mold hole of cross-sectional area less than corresponding pressing mold hole, upstream.
8. equipment as claimed in claim 1 is characterized in that, the pressing mold hole of at least one output pressing mold is configured for the metallic article that forms the polygon cross section.
9. equipment as claimed in claim 1 is characterized in that, the pressing mold hole of at least one output pressing mold is configured for the metallic article that forms annular cross section.
10. equipment as claimed in claim 1 is characterized in that, the pressing mold hole of at least one output pressing mold has the asymmetric cross section of the metallic article that is used to form asymmetric cross section.
11. equipment as claimed in claim 1 is characterized in that, the pressing mold hole of at least one output pressing mold has with respect to the cross section of at least one axis symmetry by it and is used to form the metallic article with symmetrical cross-sections.
12. equipment as claimed in claim 1 is characterized in that, the pressing mold hole of at least one output pressing mold is configured for and forms continuous slab or continuous ingot.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28495201P | 2001-04-19 | 2001-04-19 | |
| US60/284,952 | 2001-04-19 | ||
| US09/957,846 | 2001-09-21 | ||
| US10/014,649 | 2001-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02812234.8A Division CN1254329C (en) | 2001-04-19 | 2002-04-18 | Continuous pressure molten metal supply system and method for forming continuous metal articles |
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| CN101007338A true CN101007338A (en) | 2007-08-01 |
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| CNA2006100678848A Pending CN101007338A (en) | 2001-04-19 | 2002-04-18 | Continuous pressure molten metal supply system and method for forming continuous metal articles |
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| CN (1) | CN101007338A (en) |
| WO (1) | WO2002085560A1 (en) |
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| CN106424200A (en) * | 2015-08-12 | 2017-02-22 | 美铝公司 | Apparatus, manufacture, composition and method for producing long length tubing and uses thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ITPD20010302A1 (en) | 2001-12-28 | 2003-06-28 | Bbs Riva Spa | HYDRAULIC DEVICE TO PUMP AND / P INTERCEPT METAL IN THE MELTED STATE |
| US7934627B2 (en) | 2005-10-13 | 2011-05-03 | Alcoa Inc. | Apparatus and method for high pressure extrusion with molten aluminum |
| DE102012010923A1 (en) | 2012-06-04 | 2013-12-05 | Gebr. Krallmann Gmbh | Delivery device for a molten metal in an injection pressure unit |
| DE102014018797A1 (en) * | 2014-12-19 | 2016-06-23 | Gebr. Krallmann Gmbh | Delivery device for a molten metal in an injection pressure unit |
| CN107096901A (en) * | 2017-05-02 | 2017-08-29 | 重庆天运汽车配件有限公司 | A kind of uniform feeding device of spun casting |
| DE102020215665A1 (en) * | 2020-12-10 | 2022-06-15 | Oskar Frech Gmbh + Co. Kg | Die casting machine with shut-off valve in the melt inlet channel and method of operation |
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| JPS5791822A (en) * | 1980-11-29 | 1982-06-08 | Kobe Steel Ltd | High-temperature lubrication extrusion method for tubular product |
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| CN106424200A (en) * | 2015-08-12 | 2017-02-22 | 美铝公司 | Apparatus, manufacture, composition and method for producing long length tubing and uses thereof |
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