CN102168196A - Mechanical uniform dispersing method for nickel 3 zirconium-6.5 silicon nitride semisolid slurry - Google Patents
Mechanical uniform dispersing method for nickel 3 zirconium-6.5 silicon nitride semisolid slurry Download PDFInfo
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- CN102168196A CN102168196A CN 201110088887 CN201110088887A CN102168196A CN 102168196 A CN102168196 A CN 102168196A CN 201110088887 CN201110088887 CN 201110088887 CN 201110088887 A CN201110088887 A CN 201110088887A CN 102168196 A CN102168196 A CN 102168196A
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Abstract
The invention discloses a mechanical uniform dispersing method for nickel 3 zirconium-6.5 silicon nitride semisolid slurry, which belongs to the field of mechanical uniform dispersing research of nickel 3 zirconium-6.5 silicon nitride semisolid slurry. In the invention, mechanical uniform dispersion on the nickel 3 zirconium-6.5 silicon nitride semisolid slurry is carried out by adopting a mechanical preparation method and utilizing a double-blade layer mechanical agitator under the condition that the radians of upper and lower double-side arc-shaped straight blade concave cambered surfaces are respectively 51-53 degrees and 40-42 degrees, the uniform distribution of silicon nitride particles can be rapidly realized, and the uniform dispersion time can be shortened to 8 minutes and 20 seconds.
Description
Technical field
The present invention relates to a kind of mechanical homodisperse method of nickel 3 zirconiums-6.5 silicon nitride 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.
Nickel 3 zirconiums are to contain the nickelalloy that the zirconium amount is 3wt%, nickel 3 zirconiums-6.5 silicon nitride semi solid slurry is the semi solid slurry that contains 6.5wt% silicon nitride particle and nascent solid phase particles of 93.5wt% and liquid phase, adopt the CN1888801A patented method, be under 40～90 ° of conditions at the radian of the double side arc shaped straight blade cancave cambered surface of disclosed mechanical stirrer individual layer, need homodisperse after 10～13 minutes, just can obtain equally distributed nickel 3 zirconiums-6.5 of silicon nitride particle silicon nitride semi solid slurry.
Preparation for nickel 3 zirconiums-6.5 silicon nitride semi solid slurry, realizing under the equally distributed prerequisite of silicon nitride 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 nickel 3 zirconiums-6.5 silicon nitride 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 nickel 3 zirconiums-6.5 of silicon nitride particle silicon nitride 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 silicon nitride particle in the nickel 3 zirconiums-6.5 silicon nitride semi solid slurry fast, further shorten and realize the equally distributed homodisperse time of silicon nitride 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 51～53 ° and 40～42 °, nickel 3 zirconiums-6.5 silicon nitride 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 silicon nitride particle in semi solid slurry, thereby reached the purpose that shortens the homodisperse time.Utilize the present invention, nickel 3 zirconiums-6.5 silicon nitride semi solid slurry is carried out homodisperse, realize that the equally distributed homodisperse time of silicon nitride 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 nickel 3 zirconiums-6.5 silicon nitride 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, nickel 3 zirconiums-6.5 silicon nitride 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 nickel 3 zirconiums-6.5 silicon nitride 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 nickel 3 zirconiums-6.5 silicon nitride semi solid slurry for the inventive method.
Fig. 4 is the microtexture of the nickel 3 zirconiums-6.5 silicon nitride semi solid slurry that adopts the inventive method that nickel 3 zirconiums-6.5 silicon nitride semi solid slurry is carried out to obtain behind the homodisperse.
Embodiment
As follows to specifying of silicon nitride particle device in the inventive method homodisperse nickel 3 zirconiums-6.5 silicon nitride semi solid slurry in conjunction with the accompanying drawings:
The silicon nitride particle device comprises in the homodisperse nickel 3 zirconiums-6.5 silicon nitride 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.
Ceramic crucible 3 adopts mechanical connection manners to be fixed on the underframe 11, and heating tube 4 and cooling tube 5 uniformly at intervals in its wall are connected with the cooling fluid plenum system with external power source respectively.
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 40～42 °, 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 51～53 °, 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 nickel 3 zirconiums-6.5 silicon nitride 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 nickel 3 zirconium melt solidifying processes, and constantly the silicon nitride particle on double side arc shaped straight blade top is distributed in the nickel 3 zirconium melts of bottom, when the circumferential movement state of nickel 3 zirconium melts causes the dispersion effect variation of silicon nitride 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 silicon nitride particle on double side arc shaped straight blade top in the nickel 3 zirconium 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 silicon nitride particle that swims in crucible top is distributed in the nickel 3 zirconium melts, obtain the nickel 3 zirconiums-6.5 silicon nitride semi solid slurry that silicon nitride particle is evenly distributed, may further comprise the steps:
Step 1, preparation nickel 3 zirconium melts, temperature is controlled at 1500 ℃;
Step 3, start mechanical stirrer and move up and down control device, nickel 3 zirconium melts and silicon nitride particle are stirred, simultaneously, close in the power supply of heating tube 4 and the cooling tube in sidewall of crucible 5 and to connect water coolant and cool off, after nickel 3 zirconium melts are cooled to 1300～1370 ℃ of homodisperse temperature, close water coolant, open and regulate the power supply of heating tube 4, make nickel 3 zirconium melt temperatures be stabilized in this homodisperse temperature, behind the homodisperse certain hour, obtain the nickel 3 zirconiums-6.5 silicon nitride semi solid slurry 6 of homogeneous microstructure.
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 1300 ℃, when the double side arc shaped straight blade cancave cambered surface of the levels radian of double leaf lamella mechanical stirrer is respectively 51 ° and 40 °, realize that the homodisperse time of equally distributed nickel 3 zirconiums-6.5 of silicon nitride particle silicon nitride 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 1300 ℃, when the double side arc shaped straight blade cancave cambered surface of the levels radian of double leaf lamella mechanical stirrer is respectively 51 ° and 42 °, realize that the homodisperse time of equally distributed nickel 3 zirconiums-6.5 of silicon nitride particle silicon nitride 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 1370 ℃, when the double side arc shaped straight blade cancave cambered surface of the levels radian of double leaf lamella mechanical stirrer is respectively 53 ° and 40 °, realize that the homodisperse time of equally distributed nickel 3 zirconiums-6.5 of silicon nitride particle silicon nitride semi solid slurry is 8 minutes and 20 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 1350 ℃, when the double side arc shaped straight blade cancave cambered surface of the levels radian of double leaf lamella mechanical stirrer is respectively 52 ° and 41 °, realize that the homodisperse time of equally distributed nickel 3 zirconiums-6.5 of silicon nitride particle silicon nitride 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 1370 ℃, when the double side arc shaped straight blade cancave cambered surface of the levels radian of double leaf lamella mechanical stirrer is respectively 53 ° and 42 °, realize that the homodisperse time of equally distributed nickel 3 zirconiums-6.5 of silicon nitride particle silicon nitride semi solid slurry is 8 minutes and 10 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 51～53 ° and 40～42 ° of conditions, nickel 3 zirconiums-6.5 silicon nitride semi solid slurry is carried out mechanical homodisperse, realize that the equally distributed homodisperse time of silicon nitride particle can shorten to 8 minutes and 20 seconds.
Accompanying drawing 4 is the microtexture of the nickel 3 zirconiums-6.5 silicon nitride semi solid slurry that adopts the inventive method that nickel 3 zirconiums-6.5 silicon nitride semi solid slurry is carried out to obtain behind the mechanical homodisperse.White boxed area is a silicon nitride particle among the figure, and grey sphere or elliposoidal zone are nascent solid phase particles, and other zone is that solid phase is given birth in the back, and as seen, silicon nitride particle distributes very evenly.As seen, the present invention can realize the homodisperse of silicon nitride particle in the nickel 3 zirconiums-6.5 silicon nitride semi solid slurry fast.
Claims (1)
1. the mechanical homodisperse method of nickel 3 zirconiums-6.5 a silicon nitride 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 nickel 3 zirconium melt solidifying processes, and constantly the silicon nitride particle on double side arc shaped straight blade top is distributed in the nickel 3 zirconium melts of bottom, when the circumferential movement state of nickel 3 zirconium melts causes the dispersion effect variation of silicon nitride 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 silicon nitride particle on double side arc shaped straight blade top in the nickel 3 zirconium 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 silicon nitride particle that swims in crucible top is distributed in the nickel 3 zirconium melts, obtain the nickel 3 zirconiums-6.5 silicon nitride semi solid slurry that silicon nitride particle is evenly distributed, may further comprise the steps:
Step 1, preparation nickel 3 zirconium melts, temperature is controlled at 1500 ℃;
Step 2, the mass percent by 93.5% and 6.5% is poured above-mentioned nickel 3 zirconium melts and 230 purpose silicon nitride particles in the ceramic crucible into, crucible is preheating to 1320 ℃ 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, nickel 3 zirconium melts and silicon nitride 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 nickel 3 zirconium melts are cooled to 1300～1370 ℃ of homodisperse temperature, close water coolant, open and regulate the power supply of heating tube, make nickel 3 zirconium melt temperatures be stabilized in this homodisperse temperature, behind the homodisperse certain hour, obtain the nickel 3 zirconiums-6.5 silicon nitride 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 51～53 ° and 40～42 °.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032160A (en) * | 2014-06-11 | 2014-09-10 | 张家港市华尊宝特种材料科技有限公司 | Method for manufacturing antioxidant metal part |
| CN111584862A (en) * | 2020-05-25 | 2020-08-25 | 曾尚一 | Lithium ion battery anode slurry and preparation process thereof |
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| 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 |
| CN1858278A (en) * | 2006-06-08 | 2006-11-08 | 北京交通大学 | Method for preparing aluminium 20 tin semi solid slurry by mechanically stirring |
| 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 |
| CN201693159U (en) * | 2010-06-20 | 2011-01-05 | 浙江工贸职业技术学院 | Semisolid slurry stirring preparation device for light metal |
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2011
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN1858278A (en) * | 2006-06-08 | 2006-11-08 | 北京交通大学 | Method for preparing aluminium 20 tin semi solid slurry by mechanically stirring |
| 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 |
| CN201693159U (en) * | 2010-06-20 | 2011-01-05 | 浙江工贸职业技术学院 | Semisolid slurry stirring preparation device for light metal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104032160A (en) * | 2014-06-11 | 2014-09-10 | 张家港市华尊宝特种材料科技有限公司 | Method for manufacturing antioxidant metal part |
| CN111584862A (en) * | 2020-05-25 | 2020-08-25 | 曾尚一 | Lithium ion battery anode slurry and preparation process thereof |
| CN111584862B (en) * | 2020-05-25 | 2022-10-04 | 常德昆宇新能源科技有限公司 | Lithium ion battery anode slurry and preparation process thereof |
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Application publication date: 20110831 |