CN102181771A - Mechanical homodisperse method for ferrum 15 copper-5 alumina semi-solid slurry - Google Patents
Mechanical homodisperse method for ferrum 15 copper-5 alumina semi-solid slurry Download PDFInfo
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- CN102181771A CN102181771A CN 201110088778 CN201110088778A CN102181771A CN 102181771 A CN102181771 A CN 102181771A CN 201110088778 CN201110088778 CN 201110088778 CN 201110088778 A CN201110088778 A CN 201110088778A CN 102181771 A CN102181771 A CN 102181771A
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Abstract
The invention discloses a mechanical homodisperse method for ferrum15 copper-5 alumina semi-solid slurry, belonging to the field of mechanical homodisperse research of the ferrum 15 copper-5 alumina semi-solid slurry. A mechanical preparation method is adopted; and a mechanical stirrer with double vane layers is used for carrying out mechanical homodisperse for the ferrum 15 copper-5 alumina semi-solid slurry under the condition that the concave arc surface radian of an upper layer of double arc-shaped vane and the concave arc surface radian of a lower layer of double arc-shaped vane are respectively 32-34 degrees and 22-24 degrees. According to the mechanical homodisperse method, alumina particles can be evenly and quickly distributed, and homodisperse time can be shortened to eight minutes and twenty seconds.
Description
Technical field
The present invention relates to a kind of mechanical homodisperse method of iron 15 bronze medals-5 aluminum oxide semi solid slurry.
Background technology
Publication number: CN1888801A, denomination of invention: on " a kind of QTi3.5-10 graphite semi-solid slurry mechanical stirring preparation method ", set forth the mechanical preparation method of QTi3.5-10 graphite semi-solid slurry, promptly, the circumferential movement that produces when utilizing the double side arc shaped straight blade rotation of mechanical stirrer and moving downward, smash the nascent solid phase that forms in the QTi3.5 titanium bronze melt solidifying process, and constantly the graphite granule on double side arc shaped straight blade top is distributed in the QTi3.5 titanium bronze melt of bottom, when the circumferential movement state of QTi3.5 titanium bronze melt causes the dispersion effect variation of graphite granule near double side arc shaped straight blade circumferential movement state, mechanical stirrer changes sense of rotation, and the arc that utilizes double side arc shaped straight blade opposite side is distributed to the graphite granule on double side arc shaped straight blade top in the QTi3.5 titanium bronze melt of bottom; The control device that moves up and down by means of mechanical stirrer, come the driving device agitator to move up and down continuously, thereby in whole crucible scope, the graphite granule that swims in plumbago crucible top is distributed in the QTi3.5 titanium bronze melt, obtains the QTi3.5-10 graphite semi-solid slurry that graphite granule is evenly distributed.In this mechanical preparation method, mechanical stirrer is single blade layer mechanical stirrer, adopt the individual layer blade, in effective contact range of blade and semi solid slurry, by blade graphite granule is applied dissipation of ferees, constantly graphite granule is distributed in the semi solid slurry, the radian of the double side arc shaped straight blade cancave cambered surface of disclosed mechanical stirrer individual layer is under 40～90 ° of conditions in patent CN1888801A, single blade layer mechanical stirrer and moving up and down after the control device operation is homodisperse 10～15min can obtain the equally distributed QTi3.5-10 graphite semi-solid slurry of graphite granule.
Preparation for iron 15 bronze medals-5 aluminum oxide semi solid slurry, realizing under the equally distributed prerequisite of alumina particle, mechanical stirrer and the working time that moves up and down control device thereof are that the homodisperse time is short more, energy consumption is more little, cost is low more, and the pollution that iron 15 bronze medals-5 aluminum oxide semi solid slurry is subjected to is also few more, and its quality is high more, therefore can realize that the homodisperse time of equally distributed iron 15 bronze medals-5 of alumina particle aluminum oxide semi solid slurry is short more good more.
Summary of the invention
Technical problem to be solved by this invention is, overcome the deficiency of existing machinery preparation method " the homodisperse time is long ", provide a kind of and can realize the homodisperse method of alumina particle in the iron 15 bronze medals-5 aluminum oxide semi solid slurry fast, further shorten and realize the equally distributed homodisperse time of alumina particle.
The technical solution adopted for the present invention to solve the technical problems is: adopt mechanical preparation method, utilize double leaf lamella mechanical stirrer, be respectively at the double side arc shaped straight blade cancave cambered surface of levels radian under the condition of 32～34 ° and 22～24 °, iron 15 bronze medals-5 aluminum oxide semi solid slurry is carried out homodisperse.
The invention has the beneficial effects as follows: for the particle in the melt, want to finish as early as possible its dispersion in melt, must strengthen disperseing intensity.In the semi solid slurry mechanical preparation method, if after the individual layer blade is implemented to disperse to the particle in the semi solid slurry, and then utilize another layer blade to implement to disperse for the second time again, so, the particulate dispersion effect will be clearly better in the semi solid slurry, realize that the homodisperse time that uniform particles distributes will further shorten, the present invention utilizes the continuous quadratic of the twi-tier blade after the optimum combination of the double side arc shaped straight blade cancave cambered surface of levels radian to disperse, further promote the uniform distribution of alumina particle in semi solid slurry, thereby reached the purpose that shortens the homodisperse time.Utilize the present invention, iron 15 bronze medals-5 aluminum oxide semi solid slurry is carried out homodisperse, realize that the equally distributed homodisperse time of alumina particle can shorten to 8 minutes and 20 seconds, shortened 16% at least than the 10 minutes the shortest homodisperse time of adopting the CN1888801A patented method.
Description of drawings
Fig. 1 carries out the front view of homodisperse device to iron 15 bronze medals-5 aluminum oxide semi solid slurry for the inventive method.
Among the figure, circular agitator arm 1, double side arc shaped straight blade 2, ceramic crucible 3, heating tube 4, cooling tube 5, iron 15 bronze medals-5 aluminum oxide semi solid slurry 6 stops up 7, loam cake 8, Ar tracheae 9, underframe 11, bearing shell 12, thrust bearing 13, motor 14, gear drive 15, guide plate 16, guide path 17, tooth bar 18, motor 19, transmission rig 20, upper stroke switch 21, lower stroke switch 22, support 23.
Fig. 2 carries out the A-A view of homodisperse device to iron 15 bronze medals-5 aluminum oxide semi solid slurry for the inventive method.
Among the figure, thermopair 10.
Fig. 3 carries out the B-B partial view of homodisperse device to iron 15 bronze medals-5 aluminum oxide semi solid slurry for the inventive method.
Fig. 4 is the microtexture of the iron 15 bronze medals-5 aluminum oxide semi solid slurry that adopts the inventive method that iron 15 bronze medals-5 aluminum oxide semi solid slurry is carried out to obtain behind the homodisperse.
Embodiment
As follows to specifying of alumina particle device in the inventive method homodisperse iron 15 bronze medals-5 aluminum oxide semi solid slurry in conjunction with the accompanying drawings:
The alumina particle device comprises in the homodisperse iron 15 bronze medals-5 aluminum oxide semi solid slurry: mechanical stirrer and drive and move up and down control device, ceramic crucible 3, loam cake 8, obstruction 7, Ar tracheae 9 and thermopair 10.
Mechanical stirrer is a double leaf lamella mechanical stirrer, by circular agitator arm 1 and up and down two blade layers constitute, material is a heat-stable ceramic, the lower end of circular agitator arm 1 is square, its four sides is tangent with circular agitator arm 1, two blade layers are positioned at the square lower end of circular agitator arm 1 up and down, a is 20mm at interval, in two blade layers four other shapes and the identical double side arc shaped straight blade 2 of corresponding distribution except cancave cambered surface radian difference are being arranged respectively up and down, four double side arc shaped straight blades 2 of lower floor are positioned at the bottom of the square lower end of circular agitator arm 1, four Surface Vertical of the square lower end of its root and circular agitator arm 1, be mutually 90 °, width is identical with the diameter of circular agitator arm 1, the cancave cambered surface of double side arc shaped straight blade about 2 two sides down, be symmetrically distributed, be circular arc, radian is 22～24 °, cancave cambered surface top and double side arc shaped straight blade 2 upper surfaces are tangent, the lower surface of basifacial intersection of concave arc and circular agitator arm 1 square lower end is located in the same horizontal plane, and the distance between double side arc shaped straight blade 2 outer ends and ceramic crucible 3 inwalls is 5mm; Four double side arc shaped straight blades 2 on upper strata are positioned at the top of the square lower end of circular agitator arm 1, and the cancave cambered surface radian is 32～34 °, and the upper surface of the upper surface of this double side arc shaped straight blade 2 and circular agitator arm 1 square lower end is located in the same horizontal plane.
The drive unit of mechanical stirrer is made of motor 14, gear drive 15 and locating mechanism.Locating mechanism is positioned at circular agitator arm 1 top, carry out transverse orientation by two bearing shells 12 up and down, carry out longitudinal register by two thrust bearings 13 up and down, the motor 14 of mechanical stirrer drive unit, gear drive 15 and locating mechanism adopt mechanical connection manner to be fixed on the guide plate 16 respectively, and guide plate 16 can move up and down in the guide path on being fixed in support 23 17.
Mechanical stirrer moves up and down control device and is made of motor 19, transmission rig 20, upper stroke switch 21 and lower stroke switch 22.Transmission rig 20 is made of tooth bar 18 and gear, turbine and worm drive, the lower end of tooth bar 18 adopts mechanical connection manner to be connected with the guide plate 16 of mechanical stirrer drive unit, turning to of motor 19 by upper stroke switch 21, lower stroke switch 22 controls, just, when the double side arc shaped straight blade 2 in the upper strata of mechanical stirrer is moved upwards up to semi solid slurry 6 tops, lower stroke switch 22 is touched on the top of tooth bar 18, and motor 19 changes turn to, and mechanical stirrer is moved down; When the double side arc shaped straight blade 2 of the lower floor of mechanical stirrer is moved down into ceramic crucible 3 bottoms, upper stroke switch 21 is touched on the top of tooth bar 18, motor 19 changes turn to, mechanical stirrer is moved up, and motor 19, transmission rig 20, upper stroke switch 21, lower stroke switch 22 that mechanical stirrer moves up and down control device adopt mechanical connection manner to be fixed on the support 23.
Ar tracheae 9 is fixed in the hole of loam cake 8, and thermopair 10 is fixed in the sidewall of ceramic crucible 3, and its end contacts with semi solid slurry 6, stops up 7 and is positioned at ceramic crucible 3 bottoms.
The power of mechanical stirrer is 5kW, and mechanical stirrer changed a sense of rotation every 1～3 minute, and rotating speed is 3～5 revolutions per seconds, mechanical stirrer move up and down speed control continuously at 5～20mm/s.
A kind of mechanical homodisperse method of iron 15 bronze medals-5 aluminum oxide semi solid slurry, the circumferential movement that produces when utilizing the double side arc shaped straight blade rotation of mechanical stirrer and moving downward, smash the nascent solid phase that forms in the iron 15 copper melts process of setting, and constantly the alumina particle on double side arc shaped straight blade top is distributed in iron 15 copper melts of bottom, when the circumferential movement state of iron 15 copper melts causes the dispersion effect variation of alumina particle near double side arc shaped straight blade circumferential movement state, mechanical stirrer changes sense of rotation, and the arc that utilizes double side arc shaped straight blade opposite side is distributed to the alumina particle on double side arc shaped straight blade top in iron 15 copper melts of bottom; And the control device that moves up and down by means of mechanical stirrer, come the driving device agitator to move up and down continuously, thereby in whole crucible scope, the alumina particle that swims in crucible top is distributed in iron 15 copper melts, obtain the iron 15 bronze medals-5 aluminum oxide semi solid slurry that alumina particle is evenly distributed, may further comprise the steps:
Embodiment one, at the rotating speed of mechanical stirrer is that 3 revolutions per seconds, the speed of moving up and down are 5mm/s, to change sense of rotation, a homodisperse temperature every 3 minutes be under 1270 ℃, when the double side arc shaped straight blade cancave cambered surface of the levels radian of double leaf lamella mechanical stirrer is respectively 32 ° and 22 °, realize that the homodisperse time of equally distributed iron 15 bronze medals-5 of alumina particle aluminum oxide semi solid slurry is 8 minutes and 20 seconds.
Embodiment two, at the rotating speed of mechanical stirrer is that 5 revolutions per seconds, the speed of moving up and down are 15mm/s, to change sense of rotation, a homodisperse temperature every 2 minutes be under 1270 ℃, when the double side arc shaped straight blade cancave cambered surface of the levels radian of double leaf lamella mechanical stirrer is respectively 32 ° and 24 °, realize that the homodisperse time of equally distributed iron 15 bronze medals-5 of alumina particle aluminum oxide semi solid slurry is 8 minutes and 10 seconds.
Embodiment three, at the rotating speed of mechanical stirrer is that 4 revolutions per seconds, the speed of moving up and down are 20mm/s, to change sense of rotation, a homodisperse temperature every 1 minute be under 1320 ℃, when the double side arc shaped straight blade cancave cambered surface of the levels radian of double leaf lamella mechanical stirrer is respectively 34 ° and 22 °, realize that the homodisperse time of equally distributed iron 15 bronze medals-5 of alumina particle aluminum oxide semi solid slurry is 8 minutes and 10 seconds.
Embodiment four, at the rotating speed of mechanical stirrer is that 4 revolutions per seconds, the speed of moving up and down are 10mm/s, to change sense of rotation, a homodisperse temperature every 2 minutes be under 1288 ℃, when the double side arc shaped straight blade cancave cambered surface of the levels radian of double leaf lamella mechanical stirrer is respectively 33 ° and 23 °, realize that the homodisperse time of equally distributed iron 15 bronze medals-5 of alumina particle aluminum oxide semi solid slurry is 8 minutes and 10 seconds.
Embodiment five, at the rotating speed of mechanical stirrer is that 5 revolutions per seconds, the speed of moving up and down are 15mm/s, to change sense of rotation, a homodisperse temperature every 3 minutes be under 1320 ℃, when the double side arc shaped straight blade cancave cambered surface of the levels radian of double leaf lamella mechanical stirrer is respectively 34 ° and 24 °, realize that the homodisperse time of equally distributed iron 15 bronze medals-5 of alumina particle aluminum oxide semi solid slurry is 8 minutes and 20 seconds.
As seen, under the double side arc shaped straight blade cancave cambered surface of the levels radian of double leaf lamella mechanical stirrer is respectively 32～34 ° and 22～24 ° of conditions, iron 15 bronze medals-5 aluminum oxide semi solid slurry is carried out mechanical homodisperse, realize that the equally distributed homodisperse time of alumina particle can shorten to 8 minutes and 20 seconds.
Claims (1)
1. the mechanical homodisperse method of iron 15 bronze medals-5 an aluminum oxide semi solid slurry, the circumferential movement that produces when utilizing the double side arc shaped straight blade rotation of mechanical stirrer and moving downward, smash the nascent solid phase that forms in the iron 15 copper melts process of setting, and constantly the alumina particle on double side arc shaped straight blade top is distributed in iron 15 copper melts of bottom, when the circumferential movement state of iron 15 copper melts causes the dispersion effect variation of alumina particle near double side arc shaped straight blade circumferential movement state, mechanical stirrer changes sense of rotation, and the arc that utilizes double side arc shaped straight blade opposite side is distributed to the alumina particle on double side arc shaped straight blade top in iron 15 copper melts of bottom; And the control device that moves up and down by means of mechanical stirrer, come the driving device agitator to move up and down continuously, thereby in whole crucible scope, the alumina particle that swims in crucible top is distributed in iron 15 copper melts, obtain the iron 15 bronze medals-5 aluminum oxide semi solid slurry that alumina particle is evenly distributed, may further comprise the steps:
Step 1, preparation iron 15 copper melts, temperature is controlled at 1500 ℃;
Step 2, the mass percent by 95% and 5% is poured above-mentioned iron 15 copper melts and 230 purpose alumina particles in the ceramic crucible into, crucible is preheating to 1270 ℃ by the heating tube in its wall, cover loam cake after, connect Ar gas with anti-oxidation;
Step 3, start mechanical stirrer and move up and down control device, iron 15 copper melts and alumina particle are stirred, simultaneously, close in the power supply of heating tube and the cooling tube in sidewall of crucible and to connect water coolant and cool off, after iron 15 copper melts are cooled to 1270～1320 ℃ of homodisperse temperature, close water coolant, open and regulate the power supply of heating tube, make iron 15 copper melts temperature-stables in this homodisperse temperature, behind the homodisperse certain hour, obtain the iron 15 bronze medals-5 aluminum oxide semi solid slurry of homogeneous microstructure;
It is characterized in that mechanical stirrer is a double leaf lamella mechanical stirrer, the double side arc shaped straight blade cancave cambered surface of its levels radian is respectively 32～34 ° and 22～24 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110088778 CN102181771A (en) | 2011-04-10 | 2011-04-10 | Mechanical homodisperse method for ferrum 15 copper-5 alumina semi-solid slurry |
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| CN 201110088778 CN102181771A (en) | 2011-04-10 | 2011-04-10 | Mechanical homodisperse method for ferrum 15 copper-5 alumina semi-solid slurry |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1768979A (en) * | 2005-09-22 | 2006-05-10 | 北京交通大学 | Method for preparing QTi3.5-10 graphite semi-solid state slurry |
| CN1888801A (en) * | 2006-06-08 | 2007-01-03 | 北京交通大学 | QTi3.5-10 graphite semi-solid size mechanical stirring producing method |
| CN201618545U (en) * | 2010-02-10 | 2010-11-03 | 孙森 | Movable type yellow mud pulp automatic stirring apparatus |
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2011
- 2011-04-10 CN CN 201110088778 patent/CN102181771A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1768979A (en) * | 2005-09-22 | 2006-05-10 | 北京交通大学 | Method for preparing QTi3.5-10 graphite semi-solid state slurry |
| CN1888801A (en) * | 2006-06-08 | 2007-01-03 | 北京交通大学 | QTi3.5-10 graphite semi-solid size mechanical stirring producing method |
| CN201618545U (en) * | 2010-02-10 | 2010-11-03 | 孙森 | Movable type yellow mud pulp automatic stirring apparatus |
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Application publication date: 20110914 |