CN100574939C - A device for preparing and forming semi-solid alloy slurry - Google Patents
A device for preparing and forming semi-solid alloy slurry Download PDFInfo
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- CN100574939C CN100574939C CN200710063093A CN200710063093A CN100574939C CN 100574939 C CN100574939 C CN 100574939C CN 200710063093 A CN200710063093 A CN 200710063093A CN 200710063093 A CN200710063093 A CN 200710063093A CN 100574939 C CN100574939 C CN 100574939C
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Abstract
A kind of preparation of semi-solid alloy slurry and shaped device belong to the preparation and the field shaping technique of semi-solid alloy slurry.This device is made up of the support of elevating mechanism, overheated alloy liquid smelting furnace, spare-crucible, vertical inverted cone channel and low thermal conductivity liner, cooler and heater, temperature controller and cooling element and heating element heater, spare-crucible and ejecting mechanism, die casting machine and injection chamber, ejector half, typing and injection punch head, extrusion casting machine and injection chamber, injection punch head, right type and levorotation, forging machine and counterdie and patrix, continuous cast mold, secondary cooling water nozzle, tractor, dummy bar.The invention has the advantages that: simple in equipment, small investment, production cost are low, are fit to very much the preparation and the moulding production of semi-solid alloy slurry.
Description
Technical field
The invention belongs to the preparation and the field shaping technique of semi-solid alloy slurry, a kind of preparation and shaped device of semi-solid alloy slurry is provided especially.
Background technology
Since the semi-solid alloy forming technique had been invented by the seventies initial stage Massachusetts Institute Technology (MIT), the preparation of semi-solid alloy slurry and forming technique caused the extensive concern and the research of various countries.According to document " Behavior of metal alloys in the semisolid state " (M C Flemings, MetallTrans, 1991,22A:957-981), " Method and apparatus for shaping semisolid metals " (A Mitsuru, S Hiroto, H Yasunori, et al, EP Patent, 0745694A1,1996), " Anovel technique to produce metal slurries for semi-solid metal processing " (JWannasin, R A Martinez, M C Flemings, [in] Proc of the 9th Int.Conf.ofSemi-Solid Processing of Alloys and Composites, Busan Korea, 2006, p.366-369), " Rheocasting processes for semi-solid casting of aluminum alloys " (S P Midson, Die Casting Engineer, 2006,50 (1): 48-51), " preparation method of semi-solid-state metal and alloy pulp or blank " (Mao Weimin, Chinese patent, 200410009296.X, 2004) and " metal material semi-solid processing theory and technology " (write: Kang Yonglin, Mao Weimin, Hu Zhuanqi, Science Press, 2004) report, the method that obtains semi-solid alloy slurry is a lot, as mechanical mixing method, electromagnetic stirring method, the melt activation method that strain causes (strain induced melt activation), grain refinement and remelting process, the turbulence effect method, the single-screw paddling process, the double helix paddling process, low overheat hang plate casting, low overheat cast and light current magnetic paddling process, low overheat cast and weak mechanical mixing method, the melt mixed method, control cast height method, bubble agitation method etc.Equally, above-mentioned document has also proposed the rheoforming method of many semi-solid alloy slurries, as traditional mechanical agitation type rheoforging, injection chamber prepares slurry formula rheoforging, single-screw mechanical agitation type rheoforging, double helix mechanical agitation type rheoforging, low overheat hang plate cast-type rheoforging, low overheat cast and weak mechanical agitation type rheoforging, low overheat cast and light current magnetic stirring-type rheoforging, SLC formula (Sub-Liquidus Casting) rheoforging, CRP formula (Continuous Rheoconversion Process) rheoforging, SEED formula (SwirledEnthalpy Equilibation Device) rheoforging, CSIR formula (The Council for Science andindustrial Research) rheoforging.But for preparation and the moulding cost that reduces semi-solid alloy slurry, the scholar of countries in the world, expert and industrial quarters attempt to propose the preparation and the forming technique of new semi-solid alloy slurry still in continuous effort.
No. 4229210, the U.S. and No. 4434837 patents are mentioned, and generally all adopt strong electromagnetic agitation in electromagnetic agitation prepares the equipment of semi-solid alloy slurry, and promptly the power of electromagnetic agitation is very big, stir the shear rate that produced generally at 500~1500S
-1Under such shear rate, the rotary speed that is stirred alloy liquid is very high, generally all surpasses 500 rev/mins, at this moment could obtain tiny and semi-solid alloy slurry or blank ring initial crystal, thereby the preparation cost of blank is higher.If shear rate is less than 500S
-1, the form variation of primary crystal mostly is the rosiness primary crystal, and the dendrite layer of semi-solid alloy slurry or blank surface is thicker, and this semi-solid alloy blank is unsuitable for semi-solid die casting.Prepare in the equipment of semi-solid alloy slurry in electromagnetic agitation, the general vertical inverted cone channel that is not provided for the cast of alloy liquid especially, promptly do not utilize inverted cone channel to come cooled alloy liquid and promote forming core, only need to get final product crossing bear responsibility interface or crystallizer of heat that thermalloy liquid pours into conticaster reposefully.In order to carry out strong electromagnetic agitation, electromagnetic stirring equipment is huge, invests very highly, and electromagnetic agitation power is big, efficient is low, power consumption is big, so the preparation cost of semi-solid alloy slurry or blank is higher.
No. 3902544,3948650,3954455, United States Patent (USP) and document " Rheocasting " (FlemingsM, Riek R G and Young K P, Materials Science and engineering, 1976, all mention 25:103-117), the mechanical agitation method of preparation semi-solid alloy slurry all adopts strong mechanical agitation.The mechanical agitation method utilizes rotating vane or the stirring rod nascent solid phase dendrite in will solidifying to smash, and obtains semi-solid alloy slurry.Prepare in the equipment of semi-solid alloy slurry in mechanical agitation, the general vertical inverted cone channel that is not provided for the cast of alloy liquid especially, promptly do not utilize inverted cone channel to come cooled alloy liquid and promotion forming core, only need that overheated alloy liquid is poured into the teeter chamber reposefully and get final product.In stirring, the relative rotation speed of these churned mechanically blades and stirring rod is all very high, and is general all more than 500 rev/mins, even above 10000 rev/mins.Under so high stir speed (S.S.), the life-span of teeter chamber and stirring rod is not long, pollutes semi-solid alloy slurry or blank easily, reduces the internal soundness of semi-solid alloy slurry or blank.
Document " Semi-solid processing of engineering alloys by a twin-screwrheomolding process. " (S Ji, Z Fan and M J Bevis, Mater Sci﹠amp; Eng, 2001,299A:210-217) propose: the equipment that casting is penetrated in the rheology of double helix mechanical agitation mainly comprises liquid magnesium alloy feeding machanism, double helix mechanical agitation mechanism, injection mechanism and central controlling organization.Penetrate in the equipment of casting in the rheology of double helix mechanical agitation, the general vertical inverted cone channel that is not provided for the liquid magnesium alloy cast especially, promptly do not utilize inverted cone channel to cool off magnesium alloy liquid and promotion forming core, only need import overheated liquid magnesium alloy reposefully in the double helix mechanical agitation bucket and get final product.Feeding machanism can guarantee to provide temperature the suitable and suitable liquid magnesium alloy of quantity to double helix mechanical agitation mechanism; In a single day liquid magnesium alloy enters stirring system, by double helix agitator consumingly sheared on one side, be quickly cooled to the fraction solid of expection on one side; When the semi-solid magnesium alloy slurry arrived transfer valve, nascent solid phase had changed spherical particle into, and is evenly distributed in low-melting liquid phase; When transfer valve was opened, the semi-solid magnesium alloy slurry entered injection chamber, is pressed into mold cavity, and solidifies fully in mould, finally formed machine components.But the semi-solid rheological moulding that casting machine only is suitable for magnesium alloy is penetrated in the rheology of this double helix mechanical agitation.
Document " Liquidus Casting Aluminum Alloy 2618 microscopic structures " (Liu Dan, Cui Jianzhong, Xia Kenong. the journal .1999 of Northeastern University, 20 (2): 173-176) propose: under non-stirring condition, only utilize the control pouring temperature, also can prepare semi-solid alloy slurry, this method is called as the liquidus curve casting, but the pouring temperature that this method requires alloy liquid is very near the liquidus temperature of this alloy liquid, promptly high 1~5 ℃ than this liquidus temperature, could obtain semi-solid alloy slurry, this makes the control of big capacity alloy liquid temp become very difficult, the flowability of alloy liquid is variation also, especially is difficult to realize technological operation in low heat conductivity alloy liquid or continuous casting.If improve the pouring temperature of alloy liquid, the spherical-like morphology of primary crystal can worsen, spherical rosiness or the dendritic crystalline of changing into when pouring into a mould by liquidus curve, the thixotropy of this semi-solid alloy slurry is very poor, distortion during semi-solid-state shaping is inhomogeneous, be prone to the liquid-solid phase segregation, be unfavorable for very much the semisolid moulding of alloy.In this preparation technology and equipment, generally be not provided for the vertical inverted cone channel of alloy liquid cast especially, promptly do not utilize inverted cone channel to come cooled alloy liquid and promote forming core, only need that overheated alloy liquid is poured into crucible reposefully or mold gets final product.
Chinese patent 00109540.4 has proposed a kind of method and apparatus for preparing semi-solid alloy slurry or blank; being about to low excessive alloy liquid directly pours in mold or the continuous cast mold; simultaneously this is crossed thermalloy liquid and carry out weak stirring; just can prepare semi-solid alloy slurry or blank; and this semi-solid alloy slurry or blank are pure; can not be subjected to the pollution of preparation facilities; therefore this preparation method's equipment investment is lower; the preparation cost of semi-solid alloy slurry or blank is lower; semi-solid alloy slurry is convenient to various rheoforgings, and the semi-solid alloy blank is convenient to various thixotroping moulding.But this method also needs special electromagnetic stirring equipment or mechanical stirring equipment when the preparation semi-solid alloy slurry, the formation complexity of integral device, preparation technology is cumbersome, nor be provided for the vertical inverted cone channel that alloy liquid is poured into a mould especially, promptly do not utilize inverted cone channel to come cooled alloy liquid and promotion forming core, only need that overheated alloy liquid is poured into spare-crucible reposefully and get final product.
European patent EP 0745691A1 has proposed New Rheocasting technology and equipment, is called for short NRC.In the NRC technology, at first reduce the degree of superheat of cast alloy, alloy liquid is poured into a tilt flat plate (or inclination pipe, or inclination semicircle pipe) on, alloy melt flows into collects crucible, pass through suitable cooled and solidified again, at this moment the nascent solid phase in the semi-solid alloy melt just is spherical, be evenly distributed in low-melting remaining liquid phase, at last the alloy pulp of collecting in the crucible is carried out the temperature adjustment, to obtain even temperature field or fraction solid as far as possible, finally obtain semi-solid alloy slurry, again this semi-solid alloy slurry is carried out rheo-diecasting or forging, with regard to plastic various parts.In the equipment of NewRheocasting technology, be not provided for the vertical inverted cone channel of alloy liquid cast especially, promptly do not utilize inverted cone channel to come cooled alloy liquid and promotion forming core, only need that overheated alloy liquid is watered down tilt flat plate (or inclination pipe or inclination semicircle pipe) reposefully and upward get final product.But the angle of inclination of this hang plate is less, generally between 30~60 degree (angle of tilt flat plate and horizontal direction), sticks alloy melt easily, needs constantly cleaning, also wastes alloy.
Document " Idra Prince Rheocasting and Squeeze Casting Technology " (J Yueko, Die Casting Engineer, 2002, (4): 20-23) point out: people such as the Martinez of Massachusetts Institute Technology (MIT) and Flemings have proposed a kind of new rheoforging technology and equipment.The core concept of this technology is: the alloy liquid of low overheat is poured into (this crucible internal diameter size is fit to the injection chamber size of die casting machine) in the spare-crucible, utilize the copper rod of plated film that the alloy liquid in the crucible is carried out weak in short-term mechanical agitation, alloy melt is cooled to below the liquidus temperature, remove the stirring copper rod then, the temperature or the fraction solid that allow semi-solid alloy melt in the crucible be cooled to be scheduled to have just obtained semi-solid alloy slurry.This semi-solid alloy slurry is carried out rheo-diecasting or forging, with regard to plastic various parts.This method needs special mechanical stirring equipment when the preparation semi-solid alloy slurry, the formation complexity of integral device, preparation technology is cumbersome, be not provided for the vertical inverted cone channel of alloy liquid cast especially yet, promptly do not utilize inverted cone channel to come cooled alloy liquid and promotion forming core, only need that overheated alloy liquid is poured into stirring crucible reposefully and get final product.
What require emphasis especially a bit is, more than various preparation semi-solid alloy slurries and rheoforging technology and equipment oneself characteristics are all arranged, also all there is deficiency separately, still needs to propose the preparation and the molding equipment of new semi-solid alloy slurry, so that simplify technology, reduce production costs.
Summary of the invention
The objective of the invention is to: preparation and shaped device that a kind of semi-solid alloy slurry is provided.To utilize a vertical inverted cone channel to pour into a mould alloy liquid, promote the cooling and the forming core of this alloy liquid, preparation semi-solid alloy slurry and rheoforging.
The present invention is by the ejector half 16 of the injection chamber 14 of the support of the cooling element 10 of elevating mechanism 2, overheated alloy liquid smelting furnace 3, cup 5, vertical inverted cone channel 6, spare-crucible 7, temperature controller 9 and heating element heater 11, spare-crucible 7 and ejecting mechanism 13, die casting machine 15, die casting machine and finalize the design and 17 constitute, and sees Fig. 1, Fig. 2, Fig. 3, Fig. 4.Elevating mechanism 2 can freely be adjusted the cast gate and the distance between the cup 5 of degree of superheat alloy liquid smelting furnace 3 and pour into a mould with convenient.Elevating mechanism 2 is connected with overheated alloy liquid smelting furnace 3, and overheated alloy liquid smelting furnace 3 is connected with cup 5, and cup 5 is connected with vertical inverted cone channel 6, and vertical inverted cone channel 6 is connected with spare-crucible 7.Spare-crucible 7 combines with temperature controller 9, and temperature controller 9 is made up of the support and the ejecting mechanism 13 of cooling element 10, heating element heater 11 and spare-crucible 7.Spare-crucible 7 combines with die casting machine 15, and die casting machine 15 is made up of injection chamber 14, ejector half 16, typing 17 and injection punch head 19.
The injection chamber 14 of die casting machine 15 can be replaced by the injection chamber 21 of extrusion casting machine 23, and the ejector half 16 of die casting machine and typing 17 can be replaced by the right type 24 and the levorotation 25 of extrusion casting machine, see Fig. 5, Fig. 6.Elevating mechanism 2 can freely be adjusted the cast gate and the distance between the cup 5 of degree of superheat alloy liquid smelting furnace 3 and pour into a mould with convenient.Elevating mechanism 2 is connected with overheated alloy liquid smelting furnace 3, and overheated alloy liquid smelting furnace 3 is connected with cup 5, and cup 5 is connected with vertical inverted cone channel 6, and vertical inverted cone channel 6 is connected with spare-crucible 7.Spare-crucible 7 combines with temperature controller 9, and temperature controller 9 is made up of the support and the ejecting mechanism 13 of cooling element 10, heating element heater 11 and spare-crucible 7.Spare-crucible 7 combines with extrusion casting machine 23, and extrusion casting machine 23 is made up of the right type 24 and the levorotation 25 of injection chamber 21, injection punch head 22, extrusion casting machine.
The ejector half 16 of die casting machine and typing 17 can be replaced by the anvil tool 28 and the last forging die 30 of forging machine 29, see Fig. 7, Fig. 8.Elevating mechanism 2 can freely be adjusted the cast gate and the distance between the cup 5 of degree of superheat alloy liquid smelting furnace 3 and pour into a mould with convenient.Elevating mechanism 2 is connected with overheated alloy liquid smelting furnace 3, and overheated alloy liquid smelting furnace 3 is connected with cup 5, and cup 5 is connected with vertical inverted cone channel 6, and vertical inverted cone channel 6 is connected with spare-crucible 7.Spare-crucible 7 combines with temperature controller 9, and temperature controller is made up of the support and the ejecting mechanism 13 of cooling element 10 and heating element heater 11 and spare-crucible 7.Spare-crucible 7 combines with forging machine 29, and forging machine 29 is made up of anvil tool 28 and last forging die 30.
The structure of vertical inverted cone channel 6 is seen Figure 13, Figure 14, Figure 15 and Figure 16.The outside of vertical inverted cone channel 6 can be provided with cooler 38 and heater 39; The inner wall shape of vertical inverted cone channel 6 is conical or polygon taper, and its material is nonmetal or metal; The inwall of vertical inverted cone channel 6 can be provided with low thermal conductivity liner 37, and the thickness of low thermal conductivity liner is 0.2~2mm; The height of vertical inverted cone channel 6 is 100~1000mm.
Spare-crucible be shaped as hydrostatic column or polygon prismatic container, the material of this spare-crucible is a nonmagnetic metal (being that relative permeability is about 1 metal) or nonmetal.
The invention has the advantages that: with the degree of superheat is that 0~250 ℃ alloy liquid pours into a vertical inverted cone channel, this is crossed thermalloy liquid and flows downward along the inwall of this inverted cone channel, flow in the spare-crucible, strengthen the Quench of this alloy liquid and roll up crystallization nuclei with this, can obtain better semi-solid alloy slurry; Control the follow-up cooling procedure or the temperature field of this alloy pulp simultaneously, accurately control the fraction solid of semi-solid alloy slurry, then the semi-solid alloy slurry of this fraction solid is directly delivered to die casting machine, extrusion casting machine or forging machine and carry out rheoforging; Maybe this semi-solid alloy slurry is frozen into blank fully, is used for the Semi-Solid Thixoforming moulding of this alloy.
This preparation and forming method have been cancelled complicated simple electromagnetic agitation or mechanical agitation equipment, complicated low overheat cast and electromagnetic agitation in the weak stirring preparation or mechanical agitation equipment have also been cancelled, also greatly reduce the difficulty of liquidus curve cast, significantly reduced the preparation energy consumption, can obtain good semi-solid alloy slurry equally, obviously reduce the preparation cost of semi-solid alloy slurry.These semi-solid alloy slurries are through follow-up control cooling or temperature field homogenising, the injection chamber of this semi-solid alloy slurry being delivered to die casting machine or extrusion casting machine carries out rheoforging, maybe this semi-solid alloy slurry is delivered to forging machine and carry out rheoforging, shortened the thixotroping moulding process flow process of semi-solid alloy greatly, reduce equipment investment significantly, obviously reduce the production cost of semi-solid alloy profiled member.
Simple in equipment of the present invention, equipment investment are few, and the production cost of foundry goods, squeeze casting or forging is low, are fit to very much the rheoforging of semi-solid alloy and the production of blank.
Description of drawings
Fig. 1 is semi-solid alloy slurry preparation of the present invention and moulding process and device schematic diagram.Wherein elevating mechanism 2, overheated alloy liquid smelting furnace 3, cup 5, vertical inverted cone channel 6, spare-crucible 7.
Fig. 2 is semi-solid alloy slurry preparation of the present invention and moulding process and device schematic diagram.The wherein support of the cooling element 10 of spare-crucible 7, temperature controller 9 and heating element heater 11, spare-crucible 7 and ejecting mechanism 12.
Fig. 3 is semi-solid alloy slurry preparation of the present invention and moulding process and device schematic diagram.The wherein injection chamber 14 of spare-crucible 7, die casting machine, injection punch head 19.
Fig. 4 is semi-solid alloy slurry preparation of the present invention and moulding process and device schematic diagram.The wherein ejector half 16 of die casting machine 15 and typing 17, injection punch head 19.
Fig. 5 is semi-solid alloy slurry preparation of the present invention and moulding process and device schematic diagram.The wherein injection chamber 21 of spare-crucible 7, extrusion casting machine 23, injection punch head 22.
Fig. 6 is semi-solid alloy slurry preparation of the present invention and moulding process and device schematic diagram.The wherein right type 24 of extrusion casting machine 23 and levorotation 25, injection punch head 22.
Fig. 7 is semi-solid alloy slurry preparation of the present invention and moulding process and device schematic diagram.The anvil tool 28 of spare-crucible 7, forging machine 29 wherein.
Fig. 8 is semi-solid alloy slurry preparation of the present invention and moulding process and device schematic diagram.Wherein the anvil tool 28 of forging machine 29, go up forging die 30.
Fig. 9 is semi-solid alloy slurry preparation of the present invention and moulding process and device schematic diagram.The wherein injection chamber 14 of elevating mechanism 2, overheated alloy liquid smelting furnace 3, cup 5, vertical inverted cone channel 6, die casting machine 15, injection punch head 19.
Figure 10 is semi-solid alloy slurry preparation of the present invention and moulding process and device schematic diagram.The wherein injection chamber 21 of elevating mechanism 2, overheated alloy liquid smelting furnace 3, cup 5, vertical inverted cone channel 6, extrusion casting machine 23, injection punch head 22.
Figure 11 is semi-solid alloy slurry preparation of the present invention and moulding process and device schematic diagram.The anvil tool 28 of elevating mechanism 2, overheated alloy liquid smelting furnace 3, cup 5, vertical inverted cone channel 6, forging machine 29 wherein.
Figure 12 is semi-solid alloy blank preparation technology of the present invention and device schematic diagram.Wherein elevating mechanism 2, overheated alloy liquid smelting furnace 3, cup 5, vertical inverted cone channel 6, continuous cast mold 32, continuous casting billet 33, secondary cooling water nozzle 34, tractor 35 and dummy bar 36.
Figure 13 is semi-solid alloy blank preparation technology of the present invention and device schematic diagram.Wherein vertical inverted cone channel 6, low heat-conductive coating 37, cooler 38.
Figure 14 is semi-solid alloy blank preparation technology of the present invention and device schematic diagram.Wherein vertical inverted cone channel 6, low heat-conductive coating 37, heater 39.
Figure 15 is semi-solid alloy blank preparation technology of the present invention and device schematic diagram.Wherein vertical inverted cone channel 6, low heat-conductive coating 37, cooler 38.
Figure 16 is semi-solid alloy blank preparation technology of the present invention and device schematic diagram.Wherein vertical inverted cone channel 6, low heat-conductive coating 37, heater 39.
The specific embodiment
With reference to Fig. 1, Fig. 2, Fig. 5, Fig. 6 and Figure 13, this is technological process and the device that provides by above-mentioned technical characterstic.This technology is provided with elevating mechanism 2, and this elevating mechanism 2 utilizes hydraulic system to drive; This overheated ZL101A aluminium alloy (being hypoeutectic Al-7wt%Si-0.45wt%Mg aluminium alloy) liquid smelting furnace 3 is resistance melting furnaces, and the heat-insulating property of this resistance melting furnace is good, can guarantee the accuracy of temperature control of ZL101A aluminum alloy melt 4, and accuracy of temperature control is ± 10 ℃; This overheated ZL101A aluminum alloy melt smelting furnace 3 is connected with cup 5, and this cup is made by graphite; This cup 5 is connected with vertical inverted cone channel 6, and the height of this inverted cone channel 6 is that 200mm, end opening internal diameter are that 10mm, back draught are 10 degree, and this inverted cone channel 6 is made by graphite; This inverted cone channel 6 is connected with the spare-crucible 7 of semisolid ZL101A aluminium alloy size, and this spare-crucible 7 is made by the Austenitic stainless steel, and the inside dimension of this spare-crucible 7 is φ 80 * 200mm, and this spare-crucible 7 is in room temperature before the cast; This spare-crucible 7 combines with temperature controller 9, temperature controller 9 is made up of the support and the ejecting mechanism 13 of cooling element 10, heating element heater 11 and spare-crucible, cooling element 10 is made of the air at room temperature of circulation, heating element heater 11 is made of the intermediate frequency induction loop, and the support of spare-crucible and ejecting mechanism 13 are made of the tray and the steel bracket of heat-insulating material; This spare-crucible 7 combines with extrusion casting machine 23, and extrusion casting machine 23 is made up of injection chamber 21, injection punch head 22, right type 24 and levorotation 25.Adjust the elevating mechanism 2 of overheated ZL101A aluminum alloy melt smelting furnace 3,630 ℃ overheated ZL101A aluminum alloy melt 4 is poured in the cup 5, this overheated ZL101A aluminum alloy melt 4 flows downward along the inwall of inverted cone channel 6, and flow in the spare-crucible 7, when solidifying for 5 seconds, can obtain semisolid ZL101A aluminium alloy size 8; Spare-crucible 7 is moved in the temperature controller 9 together with wherein semisolid ZL101A aluminium alloy size 8, adjust the power of the 1000Hz intermediate frequency induction loop 11 of this temperature controller 9, this spare-crucible 7 is further cooled off together with wherein semisolid ZL101A aluminium alloy size 8, cooling velocity is 5 ℃/min, finally makes the fraction solid of this semisolid ZL101A aluminium alloy 8 be controlled at predetermined 0.2~0.7 or make the temperature of slurry be controlled at predetermined 580~600 ℃; In this cooling procedure, the edge of this semisolid ZL101A aluminium alloy size 8 and the temperature difference of heart portion are less than ± 3 ℃; At last, support and ejecting mechanism 13 are released temperature controllers 9 with this semisolid ZL101A aluminium alloy size 8 together with spare-crucible 7; This semisolid ZL101A aluminium alloy size 8 is poured in the injection chamber 21 of extrusion casting machine 23, and extrusion forming is held and was pressed 5~8 seconds, and open form is taken out squeeze casting, has just finished the rheology extrusion casint of a semisolid ZL101A aluminium alloy size; Before rheology extrusion casint, injection chamber 21 preheat temperatures are 250 ℃, and the right type 24 of extrusion casting machine and the preheat temperature of levorotation 25 are 300 ℃.
With reference to Fig. 1, Fig. 2, Fig. 7, Fig. 8 and Figure 13, this is technological process and the device that provides by above-mentioned technical characterstic.This technology is provided with elevating mechanism 2, and this elevating mechanism 2 utilizes hydraulic system to drive; This overheated ZL101A aluminium alloy (being hypoeutectic Al-7wt%Si-0.45wt%Mg aluminium alloy) liquid smelting furnace 3 is resistance melting furnaces, and the heat-insulating property of this resistance melting furnace is good, can guarantee the accuracy of temperature control of ZL101A aluminum alloy melt 4, and accuracy of temperature control is ± 10 ℃; This overheated ZL101A aluminum alloy melt smelting furnace 3 is connected with cup 5, and this cup is made by graphite; This cup 5 is connected with vertical inverted cone channel 6, and the height of this inverted cone channel 6 is that 400mm, end opening internal diameter are that 20mm, back draught are 2 degree, and this inverted cone channel 6 is made by graphite; This inverted cone channel 6 is connected with the spare-crucible 7 of semisolid ZL101A aluminium alloy size, this spare-crucible 7 is made by the Austenitic stainless steel, this spare-crucible 7 the hexagon prism such as be shaped as, its inner opposite side string is apart from be 80mm, highly being to pour into a mould 200mm preceding this spare-crucible 7 and be in room temperature; This spare-crucible 7 combines with temperature controller 9, temperature controller 9 is made up of the support and the ejecting mechanism 13 of cooling element 10, heating element heater 11 and spare-crucible, cooling element 10 is made of the air at room temperature of circulation, heating element heater 11 is made of the intermediate frequency induction loop, and the support of spare-crucible and ejecting mechanism 13 are made of the tray and the steel bracket of heat-insulating material; This spare-crucible 7 combines with forging machine 29, and forging machine 29 is made up of anvil tool 28 and last forging die 30.Adjust the elevating mechanism 2 of overheated ZL101A aluminum alloy melt smelting furnace 3,660 ℃ overheated ZL101A aluminum alloy melt 4 is poured in the cup 5, this overheated ZL101A aluminum alloy melt 4 flows downward along the inwall of inverted cone channel 6, and flow in the spare-crucible 7, when solidifying for 10 seconds, can obtain semisolid ZL101A aluminium alloy size 8; This spare-crucible 7 is moved in the temperature controller 9 together with wherein semisolid ZL101A aluminium alloy size 8, adjust the power of the 1000Hz intermediate frequency induction loop 11 of this temperature controller 9, this spare-crucible 7 is further cooled off together with wherein semisolid ZL101A aluminium alloy size 8, cooling velocity is 5 ℃/min, finally makes the fraction solid of this semisolid ZL101A aluminium alloy 8 be controlled at predetermined 0.2~0.7 or make the temperature of slurry be controlled at predetermined 580~600 ℃; In this cooling procedure, the edge of this semisolid ZL101A aluminium alloy size 8 and the temperature difference of heart portion are less than ± 3 ℃; At last, support and ejecting mechanism 13 are released temperature controllers 9 with this semisolid ZL101A aluminium alloy size 8 together with spare-crucible 7; This semisolid ZL101A aluminium alloy size 8 is poured in the anvil tool 28 of forging machine 29, and extrusion forming is held and was pressed 5~8 seconds, and open form is taken out forging, has just finished the rheology of a semisolid ZL101A aluminium alloy size and has forged; Before rheology was forged, the preheat temperature of anvil tool 28 and last forging die 30 was 300 ℃.
With reference to Fig. 9, Fig. 4 and Figure 13, this is technological process and the device that provides by above-mentioned technical characterstic.This technology is provided with elevating mechanism 2, and this elevating mechanism 2 utilizes hydraulic system to drive; This overheated ZL101A aluminium alloy (being hypoeutectic Al-7wt%Si-0.45wt%Mg aluminium alloy) liquid smelting furnace 3 is resistance melting furnaces, and the heat-insulating property of this resistance melting furnace is good, can guarantee the accuracy of temperature control of ZL101A aluminum alloy melt 4, and accuracy of temperature control is ± 10 ℃; This overheated ZL101A aluminum alloy melt smelting furnace 3 is connected with cup 5, and this cup is made by graphite; This cup 5 is connected with vertical inverted cone channel 6, and the height of this inverted cone channel 6 is that 800mm, end opening internal diameter are that 20mm, back draught are 4 degree, and this inverted cone channel 6 is made by graphite; This inverted cone channel 6 combines with cooler 38, and this cooler 38 is made of cooling jacket, and the flow of cooling water is 1500 liters of per minutes; This inverted cone channel 6 combines with die casting machine 15, and die casting machine 15 is made up of injection chamber 14, ejector half 16, typing 17 and injection punch head 19.Adjust the elevating mechanism 2 of overheated ZL101A aluminum alloy melt smelting furnace 3,700 ℃ overheated ZL101A aluminum alloy melt 4 is poured in the cup 5, this overheated ZL101A aluminum alloy melt 4 flows downward along the inwall of inverted cone channel 6, and flow in the injection chamber 14 of die casting machine 15, extrusion forming, hold and pressed 5~8 seconds, open form is taken out die casting, has just finished the rheo-diecasting of a semisolid ZL101A aluminium alloy size; Before rheo-diecasting, injection chamber 14 preheat temperatures are 250 ℃, and die-casting die 16 and 17 preheat temperature are 300 ℃.
With reference to Figure 10, Fig. 6 and Figure 13, this is technological process and the device that provides by above-mentioned technical characterstic.This technology is provided with elevating mechanism 2, and this elevating mechanism 2 utilizes hydraulic system to drive; This overheated ZL101A aluminium alloy (being hypoeutectic Al-7wt%Si-0.45wt%Mg aluminium alloy) liquid smelting furnace 3 is resistance melting furnaces, and the heat-insulating property of this resistance melting furnace is good, can guarantee the accuracy of temperature control of ZL101A aluminum alloy melt 4, and accuracy of temperature control is ± 10 ℃; This overheated ZL101A aluminum alloy melt smelting furnace 3 is connected with cup 5, and this cup is made by graphite; This cup 5 is connected with vertical inverted cone channel 6, and the height of this inverted cone channel 6 is that 1000mm, end opening internal diameter are that 20mm, back draught are 2 degree, and this inverted cone channel 6 is made by graphite; This inverted cone channel 6 combines with cooler 38, and this cooler 38 is made of cooling jacket, and the flow of cooling water is 1000 liters of per minutes; This inverted cone channel 6 combines with extrusion casting machine 23, and extrusion casting machine 23 is made up of injection chamber 21, injection punch head 22, right type 24 and levorotation 25.Adjust the elevating mechanism 2 of overheated ZL101A aluminum alloy melt smelting furnace 3,680 ℃ overheated ZL101A aluminum alloy melt 4 is poured in the cup 5, this overheated ZL101A aluminum alloy melt 4 flows downward along the inwall of inverted cone channel 6, and flow in the injection chamber 21 of extrusion casting machine 23, extrusion forming, hold and press 5~g second, open form is taken out squeeze casting, has just finished the rheology extrusion casint of a semisolid ZL101A aluminium alloy size; Before rheology extrusion casint, injection chamber 21 preheat temperatures are 250 ℃, and the right type 24 of extrusion casting machine 23 and levorotation 25 type preheat temperatures are 300 ℃.
With reference to Figure 11, Fig. 8 and Figure 13, this is technological process and the device that provides by above-mentioned technical characterstic.This technology is provided with elevating mechanism 2, and this elevating mechanism 2 utilizes hydraulic system to drive; This overheated ZL101A aluminium alloy (being hypoeutectic Al-7wt%Si-0.45wt%Mg aluminium alloy) liquid smelting furnace 3 is resistance melting furnaces, and the heat-insulating property of this resistance melting furnace is good, can guarantee the accuracy of temperature control of ZL101A aluminum alloy melt 4, and accuracy of temperature control is ± 10 ℃; This overheated ZL101A aluminum alloy melt smelting furnace 3 is connected with cup 5, and this cup is by the SiC ceramic making; This cup 5 is connected with vertical inverted cone channel 6, and the height of this inverted cone channel 6 is that 400mm, end opening internal diameter are that 20mm, back draught are 5 degree, and this inverted cone channel 6 is made by fine copper; This inverted cone channel 6 combines with cooler 38, and this cooler 38 is made of cooling jacket, and the flow of cooling water is 800 liters of per minutes; This inverted cone channel 6 is connected with low heat-conductive coating 37, and this low heat-conductive coating 37 mainly is made up of silica flour, and its thickness is 0.5mm; This inverted cone channel 6 combines with forging machine 29, and forging machine 29 is made up of anvil tool 28 and last forging die 30.Adjust the elevating mechanism 2 of overheated ZL101A aluminum alloy melt smelting furnace 3,750 ℃ overheated ZL101A aluminum alloy melt 4 is poured in the cup 5, this overheated ZL101A aluminum alloy melt 4 flows downward along the inwall of inverted cone channel 6, and flow in the anvil tool 28 of forging machine 29, extrusion forming, hold and pressed 5~8 seconds, open form is taken out forging, has just finished the rheology of a semisolid ZL101A aluminium alloy size and has forged; Before rheology was forged, the preheat temperature of anvil tool 28 and last forging die 30 was 300 ℃.
With reference to Fig. 1 and Figure 13, this is technological process and the device that provides by above-mentioned technical characterstic.This technology is provided with elevating mechanism 2, and this elevating mechanism 2 utilizes hydraulic system to drive; This overheated ZL101A aluminium alloy (being hypoeutectic Al-7wt%Si-0.45wt%Mg aluminium alloy) liquid smelting furnace 3 is resistance melting furnaces, and the heat-insulating property of this resistance melting furnace is good, can guarantee the accuracy of temperature control of ZL101A aluminum alloy melt 4, and accuracy of temperature control is ± 10 ℃; This overheated ZL101A aluminum alloy melt smelting furnace 3 is connected with cup 5, and this cup is made by graphite; This cup 5 is connected with vertical inverted cone channel 6, and the height of this inverted cone channel 6 is that 600mm, end opening internal diameter are that 15mm, back draught are 3 degree, and this inverted cone channel 6 is made by graphite; This inverted cone channel 6 combines with cooler 38, and this cooler 38 is made of cooling jacket, and the flow of cooling water is 1500 liters of per minutes; This inverted cone channel 6 is connected with spare-crucible 7, and this spare-crucible 7 is made by carbon steel, and the inside dimension of this spare-crucible 7 is φ 80 * 1500mm, and this spare-crucible 7 is in room temperature before the cast.Adjust the elevating mechanism 2 of overheated ZL101A aluminum alloy melt smelting furnace 3,680 ℃ overheated ZL101A aluminum alloy melt 4 is poured in the cup 5, this overheated ZL101A aluminum alloy melt 4 flows downward along the inwall of inverted cone channel 6, and flow in the spare-crucible 7, just formed semisolid ZL101A aluminum alloy blank after solidifying fully, can use for the Semi-Solid Thixoforming moulding.
With reference to Figure 12 and Figure 13, this is technological process and the device that provides by above-mentioned technical characterstic.This technology is provided with elevating mechanism 2, and this elevating mechanism 2 utilizes hydraulic system to drive; This overheated ZL101A aluminium alloy (being hypoeutectic Al-7wt%Si-0.45wt%Mg aluminium alloy) liquid smelting furnace 3 is resistance melting furnaces, and the heat-insulating property of this resistance melting furnace is good, can guarantee the accuracy of temperature control of ZL101A aluminum alloy melt 4, and accuracy of temperature control is ± 10 ℃; This overheated ZL101A aluminum alloy melt smelting furnace 3 is connected with cup 5, and this cup is made by graphite; This cup 5 is connected with vertical inverted cone channel 6, and the height of this inverted cone channel 6 is that 1000mm, end opening internal diameter are that 20mm, back draught are 5 degree, and this inverted cone channel 6 is made by graphite; This inverted cone channel 6 combines with cooler 38, and this cooler 38 is made of cooling jacket, and the flow of cooling water is 3000 liters of per minutes; This inverted cone channel 6 is connected with the crystallizer 32 of vertical casting machine, and this vertical casting machine is made up of continuous cast mold 32, secondary cooling water nozzle 34, tractor 35 and dummy bar 36.Adjust the elevating mechanism 2 of overheated ZL101A aluminum alloy melt smelting furnace 3,700 ℃ overheated ZL101A aluminum alloy melt 4 is poured in the cup 5, this overheated ZL101A aluminum alloy melt 4 flows downward along the inwall of inverted cone channel 6, and the diameter that flows into vertical casting machine is in the crystallizer 32 of 80mm, inwall at this crystallizer 32 is frozen into the base shell, continuous casting billet 33 is pulled out crystallizer 32 by this dummy bar 36 and tractor 35, the continuous casting billet 33 that pulls out crystallizer is continued cooling by the cooling water of secondary cooling water nozzle 34 ejections, the flow of secondary cooling is 8000 liters of per minutes, and the hauling speed of continuous casting billet 33 is per minute 500mm; Continuous casting billet 33 is exactly a semisolid ZL101A aluminum alloy blank, can use for the Semi-Solid Thixoforming moulding.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Figure 15, this is technological process and the device that provides by above-mentioned technical characterstic.This technology is provided with elevating mechanism 2, and this elevating mechanism 2 utilizes hydraulic system to drive; This overheated ZL101A aluminium alloy (being hypoeutectic Al-7wt%Si-0.45wt%Mg aluminium alloy) liquid smelting furnace 3 is resistance melting furnaces, and the heat-insulating property of this resistance melting furnace is good, can guarantee the accuracy of temperature control of ZL101A aluminum alloy melt 4, and accuracy of temperature control is ± 10 ℃; This overheated ZL101A aluminum alloy melt smelting furnace 3 is connected with cup 5, and this cup is made by graphite; This cup 5 is connected with the vertical shape of falling hexagonal pyramid passage 6, height that should the shape of falling hexagonal pyramid passage 6 be 400mm, end opening string apart from being 2 degree for 20mm, back draught, be somebody's turn to do the shape of falling hexagonal pyramid passage 6 and make by graphite; Should be connected with the spare-crucible 7 of semisolid ZL101A aluminium alloy size by the shape of falling hexagonal pyramid passage 6, this spare-crucible 7 is made by the Austenitic stainless steel, and the inside dimension of this spare-crucible 7 is φ 80 * 200mm, and this spare-crucible 7 is in room temperature before the cast; This spare-crucible 7 combines with temperature controller 9, temperature controller 9 is made up of the support and the ejecting mechanism 13 of cooling element 10, heating element heater 11 and spare-crucible, cooling element 10 is made of the air at room temperature of circulation, heating element heater 11 is made of the intermediate frequency induction loop, and the support of spare-crucible and ejecting mechanism 13 are made of the tray and the steel bracket of heat-insulating material; This spare-crucible 7 combines with die casting machine 15, and die casting machine 15 is made up of injection chamber 14, ejector half 16, typing 17 and injection punch head 19.Adjust the elevating mechanism 2 of overheated ZL101A aluminum alloy melt smelting furnace 3,660 ℃ overheated ZL101A aluminum alloy melts 4 are poured in this cup 5, this overheated ZL101A aluminum alloy melt 4 flows downward along the inwall of inverted cone channel 6, and flow in the spare-crucible 7, when solidifying for 5 seconds, can obtain semisolid ZL101A aluminium alloy size 8; With this spare-crucible 7 together with wherein semisolid ZL101A aluminium alloy size 8 move in the temperature controller 9, adjust the power of the 1000Hz intermediate frequency induction loop 11 of this temperature controller 9, this spare-crucible 7 is further cooled off together with wherein semisolid ZL101A aluminium alloy size 8, cooling velocity is 5 ℃/min, finally makes the fraction solid of this semisolid ZL101A aluminium alloy 8 be controlled at predetermined 0.2~0.7 or make the temperature of slurry be controlled at predetermined 580~600 ℃; In this cooling procedure, the edge of this semisolid ZL101A aluminium alloy size 8 and the temperature difference of heart portion are less than ± 3 ℃; At last, support and ejecting mechanism 13 are released temperature controllers 9 with this semisolid ZL101A aluminium alloy size 8 together with spare-crucible 7; This semisolid ZL101A aluminium alloy size 8 is poured in the injection chamber 14 of die casting machine 15, and extrusion forming is held and was pressed 5~8 seconds, and open form is taken out die casting, has just finished the rheo-diecasting of a semisolid ZL101A aluminium alloy size; Before rheo-diecasting, injection chamber 14 preheat temperatures are 250 ℃, and die-casting die 16 and 17 preheat temperature are 300 ℃.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Figure 14, this is technological process and the device that provides by above-mentioned technical characterstic.This technology is provided with elevating mechanism 2, and this elevating mechanism 2 utilizes hydraulic system to drive; This overheated ZL117 aluminium alloy (being hypereutectic Al-20wt%Si-1.8wt%Cu-1.0wt%RE aluminium alloy) liquid smelting furnace 3 is resistance melting furnaces, the heat-insulating property of this resistance melting furnace is good, can guarantee the accuracy of temperature control of ZL117 aluminum alloy melt 4, accuracy of temperature control is ± 10 ℃; This overheated ZL117 aluminum alloy melt smelting furnace 3 is connected with cup 5, and this cup is made by graphite; This cup 5 is connected with vertical inverted cone channel 6, and the height of this inverted cone channel 6 is that 400mm, lower port diameter are that 20mm, back draught are 2 degree, and this inverted cone channel 6 is made by graphite; This inverted cone channel 6 combines with heater 39, this heater 39 by around resistance wire constitute; This inverted cone channel 6 is connected with the spare-crucible 7 of semisolid ZL117 aluminium alloy size, and this spare-crucible 7 is made by the Austenitic stainless steel, and the inside dimension of this spare-crucible 7 is φ 80 * 200mm, and this spare-crucible 7 is in room temperature before the cast; This spare-crucible 7 combines with temperature controller 9, temperature controller 9 is made up of the support and the ejecting mechanism 13 of cooling element 10, heating element heater 11 and spare-crucible, cooling element 10 is made of the air at room temperature of circulation, heating element heater 11 is made of the intermediate frequency induction loop, and the support of spare-crucible and ejecting mechanism 13 are made of the tray and the steel bracket of heat-insulating material; This spare-crucible 7 combines with die casting machine 15, and die casting machine is made up of injection chamber 14, ejector half 16, typing 17 and injection punch head 19.Adjust the elevating mechanism 2 of overheated ZL117 aluminum alloy melt smelting furnace 3,695 ℃ overheated ZL117 aluminum alloy melt 4 is poured in the cup 5, this overheated ZL117 aluminum alloy melt 4 flows downward along the inwall of inverted cone channel 6, and flow in the spare-crucible 7, when solidifying for 5 seconds, can obtain semisolid ZL117 aluminium alloy size 8; Before the casting process and among, this inverted cone channel 6 is by this heater 39 preheatings and heating, heating voltage is that 220V, heating power are 1000W, the temperature of this inverted cone channel 6 is controlled at 300 ± 5 ℃; This spare-crucible 7 is moved in the temperature controller 9 together with wherein semisolid ZL117 aluminium alloy size 8, adjust the power of the 1000Hz intermediate frequency induction loop 11 of this temperature controller 9, this spare-crucible 7 is further cooled off together with wherein semisolid ZL117 aluminium alloy size 8, cooling velocity is 5 ℃/min, finally makes the fraction solid of this semisolid ZL117 aluminium alloy 8 be controlled at predetermined 0.2~0.6 or make the temperature of slurry be controlled at predetermined 580~590 ℃; In this cooling procedure, the edge of this semisolid ZL117 aluminium alloy size 8 and the temperature difference of heart portion are less than ± 3 ℃; At last, support and ejecting mechanism 13 are released temperature controllers 9 with this semisolid ZL117 aluminium alloy size 8 together with spare-crucible 7; This semisolid ZL117 aluminium alloy size 8 is poured in the injection chamber 14 of die casting machine 15, and extrusion forming is held and was pressed 5~8 seconds, and open form is taken out die casting, has just finished the rheo-diecasting of a semisolid ZL117 aluminium alloy size; Before rheo-diecasting, injection chamber 14 preheat temperatures are 250 ℃, and die-casting die 16 and 17 preheat temperature are 300 ℃.
For the device of implementing this invention both had been suitable for the preparation and the moulding of the semi-solid alloy slurry of acieral, also be suitable for the preparation and the moulding of the semi solid slurry of magnesium base alloy, zinc-containing alloy, acid bronze alloy, nickel-base alloy, cobalt-base alloys and ferrous alloy.
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CN102430739A (en) * | 2011-12-05 | 2012-05-02 | 东莞市星河精密压铸模具有限公司 | Die-casting and heating bushing with oppositely-arranged tapered hot runners |
CN103341596B (en) * | 2013-07-16 | 2015-11-11 | 北京科技大学 | A kind of shunting converges running channel and prepares semi solid slurry and rheopectic shaper |
CN103639374B (en) * | 2013-12-18 | 2016-05-11 | 北京科技大学 | A kind of vibration inverted cone channel method and device of preparing semi-solid-state metal |
CN109521737A (en) * | 2018-11-14 | 2019-03-26 | 北京工业大学 | A kind of die forging production line intelligence control system |
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