CN101130207A - Equipment for preparing semi-solid metal slurry and rheologic molding - Google Patents
Equipment for preparing semi-solid metal slurry and rheologic molding Download PDFInfo
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- CN101130207A CN101130207A CNA2007101761368A CN200710176136A CN101130207A CN 101130207 A CN101130207 A CN 101130207A CN A2007101761368 A CNA2007101761368 A CN A2007101761368A CN 200710176136 A CN200710176136 A CN 200710176136A CN 101130207 A CN101130207 A CN 101130207A
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Abstract
The invention discloses a preparing technique of semi-solid metal slurry and rheologic moulding equipment in the preparing technical domain of semi-solid metal slurry, which comprises the following parts: elevating mechanism, overheat metal liquid smelter, runner cup, straight-in composite pipe channel and low-conductive lining, cooler and heater, preparing copple, temperature controller and cooling element and heating element, support and push mechanism of the preparing copple, squeeze moulding machine and pressing chamber, mobile mould, static mould and injection punch, squeezing casting machine and pressing chamber, injection punch, right mould and left mould, forging machine, upper mould and lower mould, continuous casting crystallizer, two cold water sprayers, tractor and dummy bar. The invention has simple structure, low investment and manufacturing cost, which is fit for semi-solid metal slurry or blank preparation and moulding manufacturing.
Description
Technical field
The invention belongs to the preparing technical field of semi-solid metal slurry, a kind of preparation of semi-solid metal slurry and the equipment of rheoforging are provided especially.
Background technology
Since the Semi-Solid Metals Forming technology had been invented by the seventies initial stage Massachusetts Institute Technology (MIT), the preparation of semi-solid metal 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), " A noveltechnique to produce metal slurries for semi-solid metal processing " (J Wannasin, R A Martinez, M C Flemings, [in] Proc of the 9th Int.Conf.of Semi-SolidProcessing 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 metal 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 metal 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 RheoconversionProcess) rheoforging, SEED formula (Swirled Enthalpy Equilibation Device) rheoforging, CSIR formula (The Council for Science and industrial Research) rheoforging.But for preparation and the moulding cost that reduces semi-solid metal slurry, the scholar of countries in the world, expert and industrial quarters attempt to propose the technology of preparing of new semi-solid metal slurry or blank still in continuous effort.
Prepare in the semi-solid metal slurry method in electromagnetic agitation, No. 4229210, the U.S. and No. 4434837 patents require and must carry out strong electromagnetic agitation to metal bath, and promptly the power of electromagnetic agitation is very big, and the shear rate that stirring is produced is generally at 500～1500S
-1Under such shear rate, the rotary speed that is stirred molten metal is very high, generally all surpasses 500 rev/mins, at this moment could obtain tiny and semi-solid metal 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 metal slurry or blank surface is thicker, and this semi-solid-state metal blank is unsuitable for semi-solid die casting.Prepare in the equipment of semi-solid metal slurry in electromagnetic agitation, the general tiltedly straight multiple tube passage that is not provided for pouring metal melt especially, promptly do not utilize tiltedly straight multiple tube passage to come cool metal liquid and promote forming core, only need bear responsibility interface or crystallizer of the heat that over-heat metal liquid pour into conticaster reposefully got final product.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 metal slurry or blank is higher.
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 tiltedly straight multiple tube passage that is not provided for the liquid magnesium alloy cast especially, promptly do not utilize tiltedly straight multiple tube passage to cool off magnesium alloy liquid and promote forming core, only need overheated liquid magnesium alloy imported in the double helix mechanical agitation bucket reposefully 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 enters pressed the chamber, is pressed into mold cavity, and solidifies fully in mould, finally forms 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 metal slurry, this method is called as the liquidus curve casting, but the pouring temperature that this method requires molten metal is very near the liquidus temperature of this molten metal, promptly high 1～5 ℃ than this liquidus temperature, could obtain semi-solid metal slurry, this makes big capacity molten metal temperature controlling become very difficult, and the flowability of molten metal is variation also.If improve the pouring temperature of molten metal, 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 metal 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 metal.In this preparation technology and equipment, generally be not provided for the tiltedly straight multiple tube passage of pouring metal melt especially, promptly do not utilize tiltedly straight multiple tube passage to come cool metal liquid and promote forming core, only need that over-heat metal liquid is poured into crucible reposefully or mold gets final product.
Chinese patent 00109540.4 has proposed a kind of method for preparing semi-solid metal slurry or blank; being about to low excessive molten metal directly pours in mold or the continuous cast mold; simultaneously this over-heat metal liquid is carried out weak stirring; just can prepare semi-solid metal slurry or blank; and this semi-solid metal 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 metal slurry or blank is lower; semi-solid metal slurry is convenient to various rheoforgings, and the semi-solid-state metal 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 metal slurry, the formation complexity of integral device, preparation technology is cumbersome, nor be provided for the tiltedly straight multiple tube passage of pouring metal melt especially, promptly do not utilize tiltedly straight multiple tube passage to come cool metal liquid and promotion forming core, only need that over-heat metal liquid is poured into spare-crucible reposefully and get final product.
European patent EP 0745691A1 has proposed New Rheocasting technology, is called for short NRC.In the NRC technology, at first reduce the degree of superheat of casting of molten metal, with pouring metal melt to a tilt flat plate (or inclination pipe, or inclination semicircle pipe) on, metal bath flows into collects crucible, pass through suitable cooled and solidified again, at this moment the nascent solid phase in the semi-solid-state metal melt just is spherical, be evenly distributed in low-melting remaining liquid phase, at last the metal paste 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 metal slurry, again this semi-solid metal slurry is carried out rheo-diecasting or forging, with regard to plastic various parts.In the equipment of New Rheocasting technology, be not provided for the tiltedly straight multiple tube passage of pouring metal melt especially, promptly do not utilize oblique directly multiple tube passage to come cool metal liquid and promote forming core, only over-heat metal liquid need be watered down reposefully tilt flat plate (or inclination pipe or inclination semicircle pipe) 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 metal bath easily, needs constantly cleaning, also wastes metal.
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.The core concept of this technology is: with the pouring metal melt (this crucible internal diameter size is fit to the injection chamber size of die casting machine) in spare-crucible of low overheat, utilize the copper rod of plated film that the molten metal in the crucible is carried out weak in short-term mechanical agitation, metal bath is cooled to below the liquidus temperature, remove the stirring copper rod then, the temperature or the fraction solid that allow semi-solid-state metal melt in the crucible be cooled to be scheduled to have just obtained semi-solid metal slurry.This semi-solid metal slurry is carried out rheo-diecasting or forging, with regard to plastic various parts.But this method also needs special mechanical stirring equipment when the preparation semi-solid metal slurry, the formation complexity of integral device, preparation technology is cumbersome, be not provided for the tiltedly straight multiple tube passage of pouring metal melt especially yet, promptly do not utilize tiltedly straight multiple tube passage to come cool metal liquid and promotion forming core, only need that over-heat metal liquid is poured into stirring crucible reposefully and get final product.
What require emphasis especially a bit is, more than various preparation semi-solid metal 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 metal slurry, so that simplify technology, reduce production costs.
Summary of the invention
The objective of the invention is to: a kind of preparation of semi-solid metal slurry and the equipment of rheoforging are provided.Come casting of molten metal with the tiltedly straight multiple tube passage that utilizes a tipping tube and vertical tube to form, promote the cooling and the forming core of this molten metal, preparation semi-solid metal slurry and rheoforging.
The present invention is by the ejector half 16 of the pressure chamber 14 of the support of the cooling element 10 of elevating mechanism 2, over-heat metal liquid smelting furnace 3, cup 5, tiltedly straight multiple tube passage 6, spare-crucible 7, temperature controller 9 and heating element heater 11, spare-crucible 7 and ejecting mechanism 12, die casting machine, 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 molten metal smelting furnace 3 and pour into a mould with convenient.Elevating mechanism 2 is connected with over-heat metal liquid smelting furnace 3, and over-heat metal liquid smelting furnace 3 is connected with cup 5, and cup 5 is connected with tiltedly straight multiple tube passage 6, and tiltedly straight multiple tube passage 6 is connected with spare-crucible 7.Spare-crucible 7 combines with temperature controller, and temperature controller is made up of the support and the ejecting mechanism 12 of cooling element 10, heating element heater 11 and spare-crucible 7.Spare-crucible 7 combines with die casting machine, and die casting machine is by pressing chamber 14, ejector half 16, typing 17 and injection punch head 19 to form.
The pressure chamber 14 of die casting machine can be replaced by the pressure chamber 21 of extrusion casting machine, 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 molten metal smelting furnace 3 and pour into a mould with convenient.Elevating mechanism 2 is connected with over-heat metal liquid smelting furnace 3, and over-heat metal liquid smelting furnace 3 is connected with cup 5, and cup 5 is connected with tiltedly straight multiple tube passage 6, and tiltedly straight multiple tube passage 6 is connected with spare-crucible 7.Spare-crucible 7 combines with temperature controller, and temperature controller is made up of the support and the ejecting mechanism 12 of cooling element 10, heating element heater 11 and spare-crucible 7, and heating element heater is electromagnetic induction heater or resistance wire; Cooling element is air at room temperature or room temperature argon gas or SF
6With air or SF
6With CO
2The mixture of gas, or liquid water.Spare-crucible 7 combines with extrusion casting machine, and extrusion casting machine is made up of the right type 24 and the levorotation 25 of pressing 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, 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 molten metal smelting furnace 3 and pour into a mould with convenient.Elevating mechanism 2 is connected with over-heat metal liquid smelting furnace 3, and over-heat metal liquid smelting furnace 3 is connected with cup 5, and cup 5 is connected with tiltedly straight multiple tube passage 6, and tiltedly straight multiple tube passage 6 is connected with spare-crucible 7.Spare-crucible 7 combines with temperature controller, and temperature controller is made up of the support and the ejecting mechanism 12 of cooling element 10 and heating element heater 11 and spare-crucible 7.Spare-crucible 7 combines with forging machine, and forging machine is made up of anvil tool 28 and last forging die 30.
The structure of tiltedly straight multiple tube passage 6 is seen Figure 13, Figure 14.The outside of tiltedly straight multiple tube passage 6 can be provided with cooler 38 and heater 39; Tiltedly the cooler (38) of straight multiple tube passage (6) is made up of recirculated water cooling cover or air-flow coolant jacket or brackish water coolant jacket or machine oil coolant jacket, heater (39) is made up of resistance heating wire or electromagnetic induction heater, and the material of tiltedly straight multiple tube passage 6 is graphite or pottery or copper alloy or stainless steel or stainless iron; The inwall of tiltedly straight multiple tube passage 6 can be provided with ceramic coating lining 37, and the thickness of ceramic coating lining is 0.2～2mm; The height of the inclination pipeline section of tiltedly straight multiple tube passage 6 is that the angle of 0～300mm, inclined tube section axis and ground level vertical line is 0～60 degree; The height of the vertical pipeline section of tiltedly straight multiple tube passage is 50～1000mm; The internal diameter of tiltedly straight multiple tube passage is 5～100mm.
Spare-crucible be shaped as hydrostatic column or polygon prismatic container, the material of this spare-crucible is that relative permeability is 0.9～1.1 graphite or pottery or copper alloy or stainless steel or stainless iron.
The invention has the advantages that: with the degree of superheat is that 0～200 ℃ molten metal pours into a tiltedly straight multiple tube passage, this over-heat metal liquid flows downward along the inwall of this tiltedly straight multiple tube passage, flow in the spare-crucible, strengthen the Quench of this molten metal and roll up crystallization nuclei with this, can obtain better semi-solid metal slurry; Control the follow-up cooling procedure or the temperature field of this metal paste simultaneously, accurately control the fraction solid of semi-solid metal slurry, then the semi-solid metal 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 metal slurry is frozen into blank fully, is used for the Semi-Solid Thixoforming moulding of this metal.
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 metal slurry equally, obviously reduce the preparation cost of semi-solid metal slurry.These semi-solid metal slurries are through follow-up control cooling or temperature field homogenising, this semi-solid metal slurry is delivered to the pressure chamber of die casting machine or extrusion casting machine and carried out rheoforging, maybe this semi-solid metal slurry is delivered to forging machine and carry out rheoforging, shortened the thixotroping moulding process flow process of semi-solid-state metal greatly, reduce equipment investment significantly, obviously reduce the production cost of semi-solid-state metal 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-state metal and the production of blank.
Description of drawings
Fig. 1 is semi-solid metal slurry preparation of the present invention and moulding process and device schematic diagram.Wherein elevating mechanism 2, over-heat metal liquid smelting furnace 3, molten metal 4, cup 5, tiltedly straight multiple tube passage 6, spare-crucible 7, semi-solid metal slurry 8.
Fig. 2 is semi-solid metal 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, semi-solid metal slurry 8, temperature controller and heating element heater 11, spare-crucible 7 and ejecting mechanism 12.
Fig. 3 is semi-solid metal slurry preparation of the present invention and moulding process and device schematic diagram.Wherein the pressure chamber 14 of spare-crucible 7, semi-solid metal slurry 8, die casting machine, injection punch head 19.
Fig. 4 is semi-solid metal slurry preparation of the present invention and moulding process and device schematic diagram.The wherein ejector half 16 of die casting machine and typing 17, semisolid die casting 18, injection punch head 19.
Fig. 5 is semi-solid metal slurry preparation of the present invention and moulding process and device schematic diagram.Wherein the pressure chamber 21 of spare-crucible 7, semi-solid metal slurry 8, extrusion casting machine, injection punch head 22.
Fig. 6 is semi-solid metal slurry preparation of the present invention and moulding process and device schematic diagram.Wherein the pressure chamber 21 of extrusion casting machine, injection punch head 22, right type 24, levorotation 25, semisolid squeeze casting 26.
Fig. 7 is semi-solid metal slurry preparation of the present invention and moulding process and device schematic diagram.The anvil tool 28 of spare-crucible 7, semi-solid metal slurry 8, forging machine wherein.
Fig. 8 is semi-solid metal slurry preparation of the present invention and moulding process and device schematic diagram.Wherein the anvil tool 28 of forging machine, go up forging die 30, semi-solid forge pieces 31.
Fig. 9 is semi-solid metal slurry preparation of the present invention and moulding process and device schematic diagram.Wherein elevating mechanism 2, over-heat metal liquid smelting furnace 3, molten metal 4, cup 5, tiltedly straight multiple tube passage 6, semi-solid metal slurry 8, the pressure chamber 14 of die casting machine, injection punch head 19.
Figure 10 is semi-solid metal slurry preparation of the present invention and moulding process and device schematic diagram.Wherein elevating mechanism 2, over-heat metal liquid smelting furnace 3, molten metal 4, cup 5, tiltedly straight multiple tube passage 6, semi-solid metal slurry 8, the pressure chamber 21 of extrusion casting machine, injection punch head 22.
Figure 11 is semi-solid metal slurry preparation of the present invention and moulding process and device schematic diagram.The anvil tool 28 of elevating mechanism 2, over-heat metal liquid smelting furnace 3, molten metal 4, cup 5, tiltedly straight multiple tube passage 6, semi-solid metal slurry 8, forging machine wherein.
Figure 12 is semi-solid-state metal blank preparation technology of the present invention and device schematic diagram.Wherein elevating mechanism 2, over-heat metal liquid smelting furnace 3, molten metal 4, cup 5, tiltedly straight multiple tube passage 6, semi-solid metal slurry 8, continuous cast mold 32, continuous casting billet 33, secondary cooling water nozzle 34, tractor 35 and dummy bar 36.
Figure 13 is semi-solid-state metal blank preparation technology of the present invention and device schematic diagram.Wherein tiltedly straight multiple tube passage 6, ceramic coating lining 37, cooler 38, h1 is the inclined tube section vertical height of tiltedly straight multiple tube passage, h2 is the straight way vertical height of tiltedly straight multiple tube passage, α is the inclined tube section axis of tiltedly straight multiple tube passage and the angle of ground level vertical line, and d is the internal diameter of tiltedly straight multiple tube passage.
Figure 14 is semi-solid-state metal blank preparation technology of the present invention and device schematic diagram.Wherein tiltedly straight multiple tube passage 6, ceramic coating lining 37, heater 39.
The specific embodiment
Embodiment 1, with reference to Fig. 1, Fig. 2, Fig. 3, 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 aluminum alloy melt 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 tiltedly straight multiple tube passage 6, should the oblique directly height of the inclined tube section of multiple tube passage 6 be 100mm, the angle of inclined tube section axis and ground level vertical line is 30 degree, the height of the vertical pipeline section of tiltedly straight multiple tube passage is 100mm, the internal diameter of tiltedly straight multiple tube passage is 20mm, and this tiltedly straight multiple tube passage 6 is made by graphite; Should be connected with the spare-crucible 7 of semisolid ZL101A aluminium alloy size by tiltedly straight multiple tube 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 * 150mm, and this spare-crucible 7 is in room temperature before the cast; This spare-crucible 7 combines with temperature controller, temperature controller is made up of the support and the ejecting mechanism 12 of cooling element 10, heating element heater 11 and spare-crucible 7, 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 7 and ejecting mechanism 12 are made of the tray and the steel bracket of heat-insulating material; This spare-crucible 7 combines with die casting machine, and die casting machine is by pressing chamber 14, ejector half 16, typing 17 and injection punch head 19 to form.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 tiltedly straight multiple tube passage 6, and flow in the spare-crucible 7, when solidifying for 5 seconds, can obtain semisolid ZL101A aluminium alloy size 8; This spare-crucible 7 is moved in the temperature controller together with wherein semisolid ZL101A aluminium alloy size 8, adjust the power of the 1000Hz intermediate frequency induction loop 11 of this temperature controller, 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 with this semisolid ZL101A aluminium alloy size 8 together with spare-crucible 7; This semisolid ZL101A aluminium alloy size 8 is poured in the pressure chamber 14 of die casting machine, 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, pressing chamber 14 preheat temperatures is 300 ℃, and die-casting die 16 and 17 preheat temperature are 200 ℃.
Embodiment 9, reference are with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Figure 14, and 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 aluminum alloy melt 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 ZL117 aluminum alloy melt 4, and 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 tiltedly straight multiple tube passage 6, should the oblique directly height of the inclined tube section of multiple tube passage 6 be 100mm, the angle of inclined tube section axis and ground level vertical line is 30 degree, the height of the vertical pipeline section of tiltedly straight multiple tube passage is 200mm, the internal diameter of tiltedly straight multiple tube passage is 25mm, and this tiltedly straight multiple tube passage 6 is made by graphite; Should combine with heater 39 by tiltedly straight multiple tube passage 6, this heater 39 by around resistance wire constitute; Should be connected with the spare-crucible 7 of semisolid ZL117 aluminium alloy size by tiltedly straight multiple tube 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 * 150mm, and this spare-crucible 7 is in room temperature before the cast; This spare-crucible 7 combines with temperature controller, temperature controller is made up of the support and the ejecting mechanism 12 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 12 are made of the tray and the steel bracket of heat-insulating material; This spare-crucible 7 combines with die casting machine, and die casting machine is by pressing chamber 14, ejector half 16, typing 17 and injection punch head 19 to form.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 tiltedly straight multiple tube passage 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 tiltedly straight multiple tube passage 6 is by this heater 39 preheatings and heating, heating voltage is that 220V, heating power are 1200W, temperature of this tiltedly straight multiple tube passage 6 is controlled at 200 ± 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 12 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 pressure chamber 14 of die casting machine, 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, pressing chamber 14 preheat temperatures is 300 ℃, and die-casting die 16 and 17 preheat temperature are 200 ℃.
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.
Claims (8)
1. the preparation of a semi-solid metal slurry and rheoforging equipment is characterized in that: by elevating mechanism (2), over-heat metal liquid smelting furnace (3), cup (5), tiltedly straight multiple tube passage (6) and low thermal conductivity liner (37), cooler (38) and heater (39), spare-crucible (7), temperature controller and cooling element (10) and heating element heater (11), the support of spare-crucible (7) and ejecting mechanism (12), die casting machine and pressure chamber (14), ejector half (16), typing (17) and injection punch head (19), extrusion casting machine and pressure chamber (21), injection punch head (22), right type (24) and levorotation (25), forging machine and counterdie (28) and patrix (30), continuous cast mold (32), secondary cooling water nozzle (34), tractor (35), dummy bar (36) is formed; Elevating mechanism (2) is connected with over-heat metal liquid smelting furnace (3), over-heat metal smelting furnace (3) is connected with cup (5), cup (5) is connected with tiltedly straight multiple tube passage (6), tiltedly straight multiple tube passage (6) is connected with spare-crucible (7), spare-crucible (7) combines with temperature controller, spare-crucible (7) combines with the pressure chamber (14) of die casting machine, presses chamber (14) to be connected with die-casting die ejector half (16), typing (17) and injection punch head (19).
2. according to the described device of claim 1, it is characterized in that: spare-crucible (7) combines with the pressure chamber (21) of extrusion casting machine, presses chamber (21) to be connected with injection punch head (22), right type (24) and levorotation (25); Or spare-crucible (7) combines with the counterdie (28) of forging machine, and counterdie (28) is connected with patrix (30).
3. according to the described device of claim 1, it is characterized in that: tiltedly straight multiple tube passage (6) combines with the pressure chamber (14) of die casting machine, presses chamber (14) and die-casting die ejector half (16), typing (17) and injection punch head (19); Or tiltedly straight multiple tube passage (6) combines with the pressure chamber (21) of extrusion casting machine, and pressure chamber (21) is connected with injection punch head (22), right type (24) and levorotation (25); Or tiltedly straight multiple tube passage (6) combines with the counterdie (28) of forging machine, and counterdie (28) is connected with patrix (30); Or tiltedly straight multiple tube passage (6) is connected with continuous cast mold (32), and continuous cast mold (32) is connected with secondary cooling water nozzle (34), tractor (35), dummy bar (36).
4. according to the described device of claim 1, it is characterized in that: elevating mechanism (2) is connected with over-heat metal liquid smelting furnace (3), over-heat metal smelting furnace (3) is connected with cup (5), cup (5) is connected with tiltedly straight multiple tube passage (6), and tiltedly straight multiple tube passage (6) is connected with spare-crucible (7).
5. according to claim 1 or 3 described devices, it is characterized in that: tiltedly the height of the inclined tube section of straight multiple tube passage (6) between 0～300mm, the angle of inclined tube section inwall and ground level vertical line is 0～60 to spend, the straight length height that is somebody's turn to do tiltedly straight multiple tube passage (6) is between 50～1000mm, and the internal diameter of this tiltedly straight multiple tube passage (6) is between 5～100mm; The temperature of the tiltedly straight multiple tube passage (6) in the casting of molten metal process is lower than the solidus temperature of this casting of molten metal; The material of tiltedly straight multiple tube passage (6) is graphite or pottery or copper alloy or stainless steel or stainless iron; The inwall brushing ceramic coating lining (37) of tiltedly straight multiple tube passage, the thickness of this ceramic coating lining is 0.2～2mm.
6. according to claim 1 or 2 described devices, it is characterized in that: spare-crucible (7) be shaped as hydrostatic column or polygon prismatic container, the material of spare-crucible (7) is that relative permeability is 0.9～1.1 graphite or pottery or copper alloy or stainless steel or stainless iron.
7. according to claim 1 or 3 or 4 or 5 described devices, it is characterized in that: tiltedly the cooler (38) of straight multiple tube passage (6) is made up of recirculated water cooling cover or air-flow coolant jacket or brackish water coolant jacket or machine oil coolant jacket, and heater (39) is made up of resistance heating wire or electromagnetic induction heater.
8. according to the described device of claim 1, it is characterized in that: temperature controller is made up of cooling element (10) and heating element heater (11); Heating element heater is electromagnetic induction heater or resistance wire; Cooling element is air at room temperature or room temperature argon gas or SF
6With air or SF
6With CO
2The mixture of gas, or liquid water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101761368A CN101130207A (en) | 2007-10-19 | 2007-10-19 | Equipment for preparing semi-solid metal slurry and rheologic molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101761368A CN101130207A (en) | 2007-10-19 | 2007-10-19 | Equipment for preparing semi-solid metal slurry and rheologic molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101130207A true CN101130207A (en) | 2008-02-27 |
Family
ID=39127702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101761368A Pending CN101130207A (en) | 2007-10-19 | 2007-10-19 | Equipment for preparing semi-solid metal slurry and rheologic molding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101130207A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218511A (en) * | 2011-04-29 | 2011-10-19 | 太原科技大学 | Device and method for preparing semisolid alloy slurry |
| CN101670425B (en) * | 2009-07-01 | 2012-03-21 | 昆明理工大学 | Method and device thereof for preparing metal semisolid size |
| CN103286280A (en) * | 2013-06-09 | 2013-09-11 | 慈溪市汇丽机电有限公司 | Introducing grain method for preparing semi-solid metal slurry and application thereof |
| CN103639375A (en) * | 2013-12-18 | 2014-03-19 | 北京科技大学 | Vibrating vertical straight-tube channel method and device for preparing semi-solid metal |
| CN109014126A (en) * | 2018-08-04 | 2018-12-18 | 安徽盛美金属科技有限公司 | A kind of aluminium alloy press forging blank process equipment |
| CN112935261A (en) * | 2021-02-05 | 2021-06-11 | 燕山大学 | Large-caliber bimetal composite pipe inner wall forming device based on semi-solid metal powder |
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2007
- 2007-10-19 CN CNA2007101761368A patent/CN101130207A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670425B (en) * | 2009-07-01 | 2012-03-21 | 昆明理工大学 | Method and device thereof for preparing metal semisolid size |
| CN102218511A (en) * | 2011-04-29 | 2011-10-19 | 太原科技大学 | Device and method for preparing semisolid alloy slurry |
| CN103286280A (en) * | 2013-06-09 | 2013-09-11 | 慈溪市汇丽机电有限公司 | Introducing grain method for preparing semi-solid metal slurry and application thereof |
| CN103639375A (en) * | 2013-12-18 | 2014-03-19 | 北京科技大学 | Vibrating vertical straight-tube channel method and device for preparing semi-solid metal |
| CN109014126A (en) * | 2018-08-04 | 2018-12-18 | 安徽盛美金属科技有限公司 | A kind of aluminium alloy press forging blank process equipment |
| CN109014126B (en) * | 2018-08-04 | 2020-08-18 | 安徽盛美金属科技有限公司 | Aluminum alloy forging part blank processing equipment |
| CN112935261A (en) * | 2021-02-05 | 2021-06-11 | 燕山大学 | Large-caliber bimetal composite pipe inner wall forming device based on semi-solid metal powder |
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