CN102861902B - Continuous preparation device for composite stirred semi-solid slurry - Google Patents

Continuous preparation device for composite stirred semi-solid slurry Download PDF

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Publication number
CN102861902B
CN102861902B CN201210332651.1A CN201210332651A CN102861902B CN 102861902 B CN102861902 B CN 102861902B CN 201210332651 A CN201210332651 A CN 201210332651A CN 102861902 B CN102861902 B CN 102861902B
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slurry
teeter chamber
semi
graphite
stirring
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CN102861902A (en
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康永林
周冰
朱国明
郜俊震
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Beijing University of Technology
University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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Abstract

The invention relates to a continuous preparation device for composite stirred semi-solid slurry, and belongs to the technical field of machining semi-solid metal machining. The device comprises a discharge outlet 1, a graphite plug 2, a graphite lining 3, a stainless steel tube 4, a heating element 5, a cooling element 6, a stirring shaft 7, a thermal insulating layer 8, a bearing 9, a bearing seat 10, a gear 11, a discharge handle 12, a feeding inlet 13, an oblique baffle 14, a rotary blade 15, a stirring blade 16 and the like. The semi-solid slurry is prepared through the following steps: after feeding an alloy fuse into the device, throwing onto the inner wall of a stirring chamber through the rotary blade rotating at high speed, enabling the fuse to flow downward along with the inner wall and flow downward along with the baffle when encountering the oblique baffle, then throwing the fuse on the inner wall of the stirring chamber by the rotary blade, after circulating the processes for two times, enabling the fuse to flow downward along the wall of the graphite lining at the lower part, carrying out convection at the bottom of a stirring bucket through driving of the stirring blade, generating a great deal of crystal nucleus in the fuse in the process, and directly growing into spheres. The flowing velocity of the slurry can be controlled through adjusting a gap between the graphite plug and the graphite lining, the semi-solid slurry can be subjected to rheoforming together with conventional equipment such as die casting, rolling and mold forging, and semi-solid ingot can also be continuously prepared.

Description

A kind of composite stirring semi solid slurry continuous preparation device
Technical field
The present invention relates to a kind of composite stirring semi solid slurry continuous preparation device and method, belong to semisolid metal processing technology field.
Background technology
Since phase early 1970s, the researchers such as the M C Flemings of Massachusetts Institute Technology have founded the concept of semi-solid metal forming, and the preparation of semi-solid metal slurry and forming technique have caused the extensive concern of countries in the world as a kind of novel technology.Semi-solid processing is the method for utilizing metal from liquid state to Solid State Transformation or forming from the solid-state characteristic to having liquid state changes (being liquid-solid coexisting) process, this new manufacturing process combines the strong point of solidifying processing and plastic working, be that processing temperature is lower than liquid, fill type steady, to mold hot, impact little; Resistance of deformation is less than solid-state, thereby is conducive to the more complicated part of shaping and reduces power consumption, enhances productivity.
Semi-solid state forming technique mainly comprises thixotropic forming and rheological molding.Thixotropic forming technique is that the semi solid slurry of preparation is first cast as to blank, after post bake, then forms processing, and the controllability of its technique is strong, process stabilization and easy to operate, but technological process is long, and energy consumption is large, and cost is higher.Rheological molding technique is carried out rheological molding processing by the semi solid slurry of preparing, and has the features such as production procedure is short, relative cost is low, equipment is simple, is subject in recent years generally paying attention to both at home and abroad, and development rapidly.No matter be thixotropic forming or rheological molding, all include semisolid slurrying and semi-solid-state shaping two parts, wherein, slurrying is the basis of whole process and crucial, how to stablize, effectively prepare there is rounding, the study hotspot that tiny, semi solid slurry uniform non-dendritic structure becomes semi-solid processing field.
The preparation of high-quality semi solid slurry is prerequisite and the key of semisolid metal processing technology, at present, and existing multiple semi-solid slurry preparation device and method, for example: BP UK9922696 has proposed double helix mechanical agitation rheological molding technique; European patent EP 0745691A1 has proposed New Rheocasting (NRC) technology; US Patent No. 6645323B2 has proposed Semi-solid Rheocasting (SSR) rheological molding technique etc.
The domestic research work for semi-solid processing is carried out more late, but development rapidly.Non-ferrous metal is studied many scientific research institutions and the colleges and universities such as total institute, Harbin Institute of Technology, University of Science & Technology, Beijing, Shanghai University, University Of Nanchang, the Central China University of Science and Technology, at aspects such as Semi-Solid Metals Forming theory, slurry rheological behaviour, forming technologies, conduct in-depth research, and develop semi-solid slurry preparation device and the method differing from one another, representational have: melt disperses mixed pulp device (patent: 200620018003.9); Do not wait the compound preparation method of curve extruding-shear-induced isothermal spherocrystallization semisolid blank (patent: 03132471.1); Suspension cone bucket type semi-solid metal slurry preparation facilities (patent: 200810114097.3); Low overheat adds light current magnetic stirring pulping technology (patent: 00109540.74); A undaform inclination version vibration pulping device (patent: 200710011510.9); A kind of device for preparing light alloy semisolid slurry (patent 201120425807.1) etc.
The various apparatus and method of preparing semi-solid alloy slurry respectively have the feature of oneself above, but also all there is deficiency separately, great majority also just rest on the laboratory research stage, still need to propose new pulping device and technology, so that simplification technique, reduce costs, progressively promote the commercial Application of semisolid metal processing technology.
Summary of the invention
The object of the present invention is to provide a kind of composite stirring semi solid slurry continuous preparation device, solve the problem that continous-stable is prepared semi solid slurry.This device utilizes rotating vane slurry is thrown and is thrown on teeter chamber's inwall, recycling slanting baffle returns slurry drainage the rotating vane of bottom, again slurry is thrown and is thrown on teeter chamber's inwall, circulation primary arrives repeatedly, and in shaft bottom, stirring vane is set, the slurry collecting is stirred, and the slurry preparing can carry out rheological molding with conventional equipments such as die casting, rolling, die forgings, also can continuously prepare semisolid ingot casting.
A composite stirring semi solid slurry continuous preparation device, mainly forms (seeing accompanying drawing 1) by 1 discharging opening, 2 graphite obstructions, 3 graphite liners, 4 stainless steel cylinders, 5 heating element heaters, 6 cooling elements, 7 shafts, 8 heat-insulation layers, 9 bearings, 10 bearing blocks, 11 gears, 12 blowing handles, 13 charging apertures, 14 slanting baffles, 15 rotating vanes, 16 stirring vanes etc.Wherein stainless steel cylinder and graphite liner have formed alloy melt teeter chamber.Outside teeter chamber, be tied with heating element heater and cooling element, then outside there is a heat-insulation layer, coordinate attemperating unit (in figure mark) can realize the temperature of teeter chamber in continuous production process.Discharging opening is arranged at the bottom of teeter chamber, and charging aperture is arranged at top.One or more slanting baffles are housed, the angular range of baffle plate and inwall on teeter chamber's inwall: 0~90 °, on baffle plate, have gap, during the dismounting of assurance equipment, rotating vane passes through.In the middle of teeter chamber, there is shaft, by bearing, be fixed on bearing block, on shaft, adopt the symmetrical rotary blade of two pairs of above cross-distribution, and in bottom, adopt stirring vane, the various shapes such as being shaped as of stirring vane is plate, anchor type, horseshoe type, blade, turbo blade.Shaft drives High Rotation Speed by buncher (not marking in figure) by travelling gear, rotational speed regulation scope 100~800rad/min, and rotating speed is higher, and shear strength is larger.There is core bar (not marking in figure) shaft inside, connects blowing handle and graphite and stops up, and by rotation blowing handle, controls the gap between graphite obstruction and graphite liner, realizes the control of the slurry rate of outflow.Discharging opening is general near former, and after being convenient to pulping process and completing, direct forming is machine components.
Graphite stops up and is combined into material drain system by core bar, spring and blowing handle, rotation blowing handle, and the skewed slot on blowing handle drives core bar and graphite to stop up and promotes, and realizes blowing; Decontrol blowing handle, spring is oppressed core bar, and graphite stops up to decline blocks discharging opening, or passes through the fixedly position of rotation of blowing handle, and the gap between fixing obstruction and inwall, realizes the continual outflow of semi solid slurry.
Apparatus of the present invention are utilized rotating vane slurry is thrown and is thrown on teeter chamber's inwall, recycling slanting baffle returns slurry drainage the rotating vane of bottom, again slurry is thrown and is thrown on teeter chamber's inwall, circulation primary arrives repeatedly, and in shaft bottom, stirring vane is set, the slurry collecting is stirred.Slurry is repeatedly subject to the chilling action of barrel and baffle plate, the a large amount of forming cores of melt, and it is free that crystal grain occurs, stirring vane stirs slurry, make melt internal temperature field distribution in convection process even, there is no the cold gradient of obvious mistake, destroyed the environment that dendrite generates, thereby obtained the semi solid slurry that is uniform-distribution with a certain proportion of spherical nascent solid phase in liquid matrix.The slurry preparing can carry out rheological molding with conventional equipments such as die casting, rolling, die forgings, also can continuously prepare semisolid ingot casting.
The present invention has realized the quick preparation of semi solid slurry, is a kind of advanced person's semi-solid-state metal processing unit (plant), and its advantage is:
1, this apparatus structure is compact, simple to operate, convenient disassembly.By using different supports by semi solid slurry outlet as far as possible near former, to save slurry course of conveying, thereby to realize the integral process process from making semisolid slurry to rheological molding.Application prospect is extensive, comprises the non-ferrous alloys such as aluminium alloy, magnesium alloy.
2, in making semisolid slurry process, teeter chamber's barrel and baffle plate have good cooling effect to melt, and in mobile process temperature field, become branch progressively even, the stirring vane of bottom can make slurry produce convection current, temperature field in slurry, composition field distribution are even, have destroyed the environment that dendrite generates, and the semi solid slurry crystallite dimension of preparation is close, good sphericity, and be evenly distributed.
3, the temperature of teeter chamber, shear strength, the slurry rate of outflow all can be accomplished accurate control, are convenient to the preparation of the semi-solid metal slurry of variety classes, different performance requirement;
4, this device is equipped with graphite liner in bottom, there will not be the problem of sizing in whipping process; If occur, because operating temperature is generally below aluminium alloy phase line 10~60 ℃ in this device agitator, more than teeter chamber's temperature can being brought up to liquidus curve soon, buildup will be melted, be flowed out, and has guaranteed the reliability of apparatus of the present invention long time continuous workings.
Accompanying drawing explanation
Fig. 1 is composite stirring semi solid slurry continuous preparation device structural representation;
Fig. 2 is the part-structure feature of shaft;
Fig. 3 is the generalized section of agitator;
The specific embodiment
Below in conjunction with example, structure of the present invention and implementation result are described further:
Example 1:
(1) test is 610 ℃ with the liquidus temperature of ZL104 aluminium alloy, alloy is melted in crucible electrical resistance furnace, when alloy temperature reaches 720 ℃ of left and right, with bell jar, the carbon trichloride after drying is pressed into melt lower curtate (addition be aluminium alloy gross weight 0.5%), and swing gently, carry out degasification, the deslagging refining of alloy melt and process, finally alloy melt temperature is down to 630 ℃ of insulations.
(2) setting apparatus of the present invention teeter chamber temperature is 580 ℃, it is 400rad/min that unlatching buncher makes agitating auger bar rotating speed, graphite stops up closed, block discharging opening, each parameter reaches after setting value, the aluminium alloy that previous step is melted is poured in the teeter chamber of apparatus of the present invention by charging aperture, pour into alloy amount and be about 5 kilograms, alloy melt is first rotated blade throwing and is thrown on barrel, along barrel, flow downward, under the effect of baffle plate, being rotated again blade throwing is thrown on barrel, circulate after twice, slurry enters the taper teeter chamber of bottom, under the effect of stirring vane, carry out convection current.Under baffle plate and barrel abundant cooling, the temperature of melt drops to below liquidus curve, and under the shear agitation effect of stirring vane, nascent nucleus quantity increases and is grown to spherical, now, alloy melt temperature, in semi solid zone, is uniform-distribution with a certain proportion of spherical nascent solid phase in its liquid matrix.
Example 2:
(1) test is 640 ℃ with the liquidus temperature of 7075 aluminium alloys, it is in the crucible electrical resistance furnace of 400 ℃ that aluminium alloy ingot is put into preheat temperature, refining after aluminium alloy temperature reaches 720 ℃, with bell jar, the carbon trichloride after drying is pressed into melt lower curtate (addition be aluminium alloy gross weight 0.5%), and swing gently, carry out degasification, the deslagging refining of alloy melt and process, finally alloy melt temperature is down to 660 ℃ of insulations.
(2) setting apparatus of the present invention teeter chamber temperature is 610 ℃, and it is 600rad/min that unlatching buncher makes agitating auger bar rotating speed, and rotation blowing handle, promotes graphite and stop up and be fixed on certain position, guarantees that slurry slowly flows out.Each parameter reaches after setting value, and the aluminium alloy that previous step is melted continues to be poured in the teeter chamber of apparatus of the present invention by charging aperture, pours into each approximately 3 kilograms of alloy amount, totally four times.Alloy melt is first rotated blade throwing and is thrown on barrel, along barrel, flows downward, and under the effect of baffle plate, is rotated again blade throwing and is thrown on barrel, circulates after twice, and slurry enters the taper teeter chamber of bottom, carries out convection current under the effect of stirring vane.The semi solid slurry preparing slowly flows out from the gap between graphite obstruction and barrel, enters slurry and collects in crucible.When pouring into alloy amount when more, teeter chamber's temperature rises, and temperature control box detects barrel temperature higher than design temperature, breather pipe ventilation, and temperature drops to design temperature, and ventilation stops.

Claims (3)

  1. A composite stirring semi solid slurry continuous preparation device by: discharging opening (1), graphite stop up (2), graphite liner (3), stainless steel cylinder (4), heating element heater (5), cooling element (6), shaft (7), heat-insulation layer (8), bearing (9), bearing block (10), gear (11), blowing handle (12), charging aperture (13), slanting baffle (14), rotating vane (15), stirring vane (16) forms; Wherein stainless steel cylinder and graphite liner have formed alloy melt teeter chamber, are tied with heating element heater and cooling element outside teeter chamber, then there is a heat-insulation layer outside, coordinate attemperating unit can realize the temperature of teeter chamber in continuous production process; Discharging opening is arranged at the bottom of teeter chamber, and charging aperture is arranged at top; In the middle of teeter chamber, there is shaft, by bearing, be fixed on bearing block; There is core bar shaft inside, connects blowing handle and graphite and stops up, and by rotation blowing handle, controls the gap between graphite obstruction and graphite liner, realizes the control of the slurry rate of outflow; It is characterized in that: the upper symmetrical rotary blade (15) that adopts two pairs of above cross-distribution of described shaft (7), and in bottom, adopt stirring vane (16); One or more slanting baffles (14) are housed on described teeter chamber inwall, this device utilizes rotating vane that slurry is thrown and is thrown on teeter chamber's inwall, recycling slanting baffle returns slurry drainage the rotating vane of bottom, again slurry is thrown and is thrown on teeter chamber's inwall, circulation primary arrives repeatedly, and in shaft bottom, stirring vane is set, the slurry collecting is stirred, the slurry preparing can carry out rheological molding with die casting, rolling, die forging conventional equipment, also can continuously prepare semisolid ingot casting.
  2. 2. composite stirring semi solid slurry continuous preparation device according to claim 1, is characterized in that: described slanting baffle on teeter chamber's inwall along circumferential setting and oblique under, on baffle plate, have gap, during the dismounting of assurance equipment, rotating vane passes through.
  3. 3. composite stirring semi solid slurry continuous preparation device according to claim 1, is characterized in that: the shape of shaft bottom stirring vane comprises flat board, anchor type, horseshoe type, blade, five kinds of shapes of turbo blade.
CN201210332651.1A 2012-09-10 2012-09-10 Continuous preparation device for composite stirred semi-solid slurry Active CN102861902B (en)

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* Cited by examiner, † Cited by third party
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GB2529449A (en) * 2014-08-20 2016-02-24 Zen Cassinath A device and method for high shear liquid metal treatment

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4194552A (en) * 1977-05-23 1980-03-25 Rheocast Corporation Method to form metal containing nondendritic primary solids
CN1319673C (en) * 2005-09-22 2007-06-06 北京交通大学 Method for preparing QTi3.5-10 graphite semi-solid state slurry
CN201488573U (en) * 2009-06-19 2010-05-26 南昌大学 Semi-solid light alloy mixing plant
CN202015593U (en) * 2011-02-28 2011-10-26 福建省三明同晟化工有限公司 Efficient backflow slurry machine
CN102358922B (en) * 2011-11-01 2013-07-03 北京科技大学 Light alloy semi-solid slurry preparation device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2529449A (en) * 2014-08-20 2016-02-24 Zen Cassinath A device and method for high shear liquid metal treatment
WO2016027087A1 (en) * 2014-08-20 2016-02-25 Zen Cassinath A device and method for high shear liquid metal treatment
GB2529449B (en) * 2014-08-20 2016-08-03 Cassinath Zen A device and method for high shear liquid metal treatment
US10322445B2 (en) 2014-08-20 2019-06-18 Zen CASSINATH Device and method for high shear liquid metal treatment

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