CN102328091B - Powder feeding and mixing device for preparing magnetic grinding material through atomization and rapid solidification and powder feeding and mixing method - Google Patents
Powder feeding and mixing device for preparing magnetic grinding material through atomization and rapid solidification and powder feeding and mixing method Download PDFInfo
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Abstract
The invention provides a powder feeding and mixing device for preparing a magnetic grinding material through atomization and rapid solidification and a powder feeding and mixing method. The powder feeding and mixing device comprises a powder feeding device and a powder mixing device. The powder feeding and mixing control method comprises the following steps in the specification, wherein the steps 1 and 2 are combined to achieve the purposes of (1) regulating a material control valve to a maximum opening degree, and (2) regulating the opening degree of a balancing valve and simultaneously observing a pressure displayed by a balance barometer, wherein the pressure of the balance barometer is regulated to be 0.05-0.5MPa; the steps 1, 2 and 3 are combined to realize regulation of blowing pressure; the steps 1 and 6 are combined to realize regulation of controlling and debugging pressure of jet flows of a flow mixing pipe; the steps 1, 2, 3, 6 and 7 are combined to realize the flow regulation of hard grinding materials; and the steps 6, 7 and 8 are combined to realize the regulation of control pressure for the jet flows of the flow mixing pipe. Under the action of the powder feeding and mixing pipe, the hard grinding materials in the flow mixing pipe are fully mixed with high-pressure gas so as to form a gas-solid two phase flow. According to the invention, an important condition is provided for a novel method for preparing the magnetic grinding material.
Description
Technical field
The invention provides a kind of pneumatic atomizing rapid condensation magnetic abrasive material preparation and send meal mixer and send mixed powder control method, belong to the magnetic abrasive finishing preparing technical field.
Background technology
The magnetic abrasive finishing Finishing is a kind of new finishing process that magnetic field application is developed in traditional grinding technique; It is a kind of very excellent polishing processing method; To improve the effectively technological means of product surface quality.There is plurality of advantages technically in the method: flexibility, adaptivity, self-sharpening, controllability, temperature rise is little and need not carry out tool wear compensation, need not correction of the flank shape etc. characteristics; Also avoided simultaneously the complicated requirement to the grinding tool head construction, can realize the grinding polishing processing of 3 D complex curved surface and solve automation issues; And can reduce the manufacturing cost of part, thereby caused research widely at home and abroad.In prior art, the preparation method of magnetic abrasive has a variety ofly, and they can be divided three classes substantially: mechanical mixing, composite method, reaction casting.
Mechanical mixing is that ferromagnetic powder, abrasive powders and lapping liquid etc. are evenly mixed by a certain percentage at normal temperatures, directly carries out the method for attrition process.Ferromagnetic powder and abrasive powders such as the Al of certain particle size commonly used
2O
3, SiC, Cr
2O
3, after TiC etc. mixes, then add adhesive such as oleic acid, polyethylene glycol, silica gel etc. to make.This kind method can be made multiple magnetic abrasive, and preparation technology is simple, and cost is low, but during grinding, abrasive grain is easier to separate with the Magnaglo ratio and disperses, and grinding efficiency is low, has limited range of application.
From the angle of materialogy, magnetic abrasive is a kind of composite powder, i.e. iron-based grains enhanced type composite material powder.It is the heterogeneous material of being made by certain combination process by two or more material, and its performance obviously is better than raw material in particular aspects.Along with the development that composite is learned, the technology of preparing of magnetic abrasive has also obtained corresponding development, and its preparation technology has many kinds, mainly contains sintering process, mull technique, composite deposite method etc.
Sintering process is that present magnetic abrasive prepares the most frequently used method.In Japan, the method successfully is applied in suitability for industrialized production.According to the difference of concrete sintering condition, it is divided into again normal pressure-sintered, hot pressed sintering, laser sintered, microwave sintering etc.Due to processing characteristics and the service life of magnetic abrasive, certainly be taken to a great extent the bond strength of abrasive particle phase and ferromagnetic phase.The magnetic abrasive of sintering process preparation has abrasive material phase and ferromagnetic being separated of considerable part in mechanical disintegration, screening process, cause the ferromagnetic strength decreased that combines with abrasive particle, durability decline.
Mull technique is divided into inorganic bond and organic adhesive according to the difference of selected binding agent, that certain proportion, the ferromagnetic powder that mixes and abrasive powders are bonded together with binding agent, then varigrained magnetic abrasive powder is made in curing, then mechanical disintegration, screening.The magnetic abrasive of mull technique preparation owing to not needing briquet in advance, do not need to contain the equipment such as electric furnace, laser machine of inert gas, so the method technique is simple, easily realizes, cost is lower.But tissue looseness, in conjunction with poor, density is low, poor heat stability, abrasive particle easily comes off mutually, and the life-span is shorter.And when temperature was higher, the magnetic abrasive of bonding made the surface of processing become furvous, the easy contaminated damage of original finished surface.
The composite deposite method certain abrasive grain is mingled with in the coat of metal equably, and the special coating that forms is composite deposite with the method for composite plating or composite chemical plating.Compound plating technology is applied in the technology of preparing of magnetic abrasive, through development for many years, oneself successfully is applied in the composite deposite method in many sciemtifec and technical spheres, but production cost is higher, batch production is difficult to realize, plating solution is dealt with improperly also and can be caused environmental pollution.
Its principle of reaction casting is under certain condition, by the chemical reaction between element and element or element and compound, synthetic one or more high-intensity ceramic enhancement phase of original position in human body, after obtaining containing the alloy of ceramic enhancement phase, then heat fused also under high pressure is blow molded into powder.The problem that the reaction casting exists at present is that the content of ceramic hard abrasive material in magnetic abrasive is low and hard abrasive grain wherein is also restive.
Plasma spraying method is after being pre-mixed by a certain percentage iron-based powder and hard abrasive grain evenly, is placed in the material powder feed chamber of plasma spraying equipment.In the vacuum chamber of plasma spray injection device, to applying high-frequency discharge voltage between two electrodes, produce plasma jet flame by plasma generator.The material powder that mixes constantly is injected in plasma torch simultaneously, and the plasma torch temperature can reach the high temperature of 5000～10000 ° of C, and material powder constantly is fused into little drop, then cooling, be frozen into the Magnetic Spherical abrasive grain.Although this kind method has solved the iron-based phase problem poor with abrasive material phase compatibility, but the magnetic abrasive of the method preparation is due to the high temperature action that is subjected to plasma torch, the sharp cutting edge of abrasive particle phase is passivated, cause its grinding efficiency significantly to reduce, the magnetic abrasive that its grainding capacity even prepares less than other straightforward procedures.
The fast solidifying magnetic abrasive preparation method (being proposed by the inventor) of atomizing; to adopt the fast solidifying equipment of atomizing; under the protection of inert gas; blow the molten metal bath stream of penetrating in dirty process with the high pressure draught that contains the hard abrasive material; after metal liquid stream is atomized, form the fine droplet that contains the hard abrasive grain, through quick cooled and solidified; the hard abrasive material of script compatibility and wetability extreme difference is forcibly combined with Metal Phase mutually, thereby prepare high performance magnetic abrasive.The method has broken through the poor restriction of compatibility between ferromagnetic metal and hard abrasive material, with ferromagnetic metal and the hard ceramic abrasive material is enforceable combines, prepare and have that permeability is high, grainding capacity is strong, granularity is controlled, structural strength is high, structural form is high performance magnetic abrasive material spherical, that the life-span is long.The method promises to be the most promising method of producing low-costly and in high volume the high performance magnetic abrasive material at present.
Meal mixer is sent in pneumatic atomizing rapid condensation magnetic abrasive material provided by the present invention preparation, realizes exactly atomizing that the inventor the develops key device of solidifying magnetic abrasive Preparation equipment soon.
Summary of the invention
Purpose of the present invention is to provide a kind of pneumatic atomizing rapid condensation magnetic abrasive material preparation to send meal mixer and send mixed powder control method.Adopt apparatus and method of the present invention, the imagination that can make pneumatic atomizing rapid condensation prepare magnetic abrasive is achieved, and gives the new function that the pneumatic atomizing rapid condensation device is given the preparation magnetic abrasive.
For achieving the above object, the application has adopted following technical scheme:
A kind of pneumatic atomizing rapid condensation magnetic abrasive material preparation is characterized in that: comprise dust feeder and mixed powder device with sending meal mixer;
Described dust feeder comprises: storage tank (14), and pipe cover (16), pipe cover bottom spray orifice (17), charge door (18) is penetrated
Stream output interface (20), blowing valve (21), material control valve (22), balanced valve (23), winding-up air gauge (25), equilibrium air pressure table (26), injection tube (28), storage tank spiral cover (29), mixed flow tube (30), sealing copper packing (31) and jet pressure control tracheae (33);
Described mixed powder device comprises: high-pressure pipe (19), discharge nozzle (32), jet pressure valve (24), jet air gauge (27), mixed flow tube (30);
The high-pressure pipe of described mixed powder device (19) and high-pressure air source are joined, and the high-speed jet nozzle (13) of mixed flow tube (30) outlet and aerosolization chamber joins;
Described high-pressure pipe (19) is connected with material control valve (22) by tee pipe coupling, material control valve (22) joins by tee pipe coupling and blowing valve (21), jet pressure valve (24), blowing valve (21) is connected with injection tube (28), injection tube (28) and storage tank (14) are connected and extend to the epicoele position of storage tank (14), are connected winding-up air gauge (25) in storage tank (14) bottom with injection tube (28) between blowing valve (21); Pipe cover (16) injection tube (28) that storage tank (14) is inner covers, and pipe cover (16) lower end is welded on the bottom of storage tank (14) inner chamber, and pipe cover (16) bottom has a plurality of spray orifices (17); The top of storage tank (14) is charge door (18), by spiral cover (29) and sealing copper packing (31), storage tank (14) is blocked, turn back after the inner upper end of the air-flow arrival pipe cover (16) in injection tube (28), arrive pipe cover bottom spray orifice (17) by the gap between pipe cover (16) and injection tube (28), from pipe cover bottom spray orifice (17) ejection, the hard abrasive material is sent into discharge nozzle (32); The outlet conduit of balanced valve (23) is installed equilibrium air pressure table (26), then the epicoele that connects storage tank (14), enter the epicoele position of storage tank (14) by the air-flow of balanced valve (23), promote the hard abrasive material and move down, avoid occurring the scaffolding phenomenon of hard abrasive material;
Described jet pressure control tracheae (33) is equipped with jet air gauge (27), and jet pressure control tracheae (33), joins with discharge nozzle (32), mixed flow tube (30) when joining with jet pressure valve (24); High pressure draught is by high-pressure pipe (19), jet pressure valve (24), jet pressure control tracheae (33), enter mixed flow tube (30) by three-way connection, the hard abrasive material of sending here with discharge nozzle (32) in mixed flow tube (30) mixes, and forms the gas-solid dual-phase jet.
Described pneumatic atomizing rapid condensation magnetic abrasive material preparation is characterized in that with sending meal mixer: described storage tank is as a kind of pressure vessel, and its design bearing pressure is not less than 10MPa.
The preparation of described pneumatic atomizing rapid condensation magnetic abrasive material is with sending meal mixer, and it send and mixes the powder function is that the pure gas that provides by high-pressure air source and the pressure of controlling air-flow are realized, without any need for other power source.
Described pneumatic atomizing rapid condensation magnetic abrasive material preparation is with sending sending of meal mixer mixed powder control method, and its step is as follows:
Step 1, jet pressure valve (24), balanced valve (23), blowing valve (21), material control valve (22) are placed in closed condition;
Step 2, equalizing pressure are regulated:
(1) regulate material control valve (22) to maximum opening;
(2) observe the demonstration pressure of equilibrium air pressure table (26), adjustment air gauge (26) pressure to 0.05～0.5MPa when adjustment valve (23) aperture;
Step 3, jetting pressure are regulated: observe the demonstration pressure of winding-up air gauge (25) in the time of regulation blowing valve (21) aperture, the barometric pressure to 1 of regulation blowing～3MPa;
Step 4, close material control valve (22);
Step 5, the can of hard abrasive material: according to the design capacity of storage tank (14), measure by volume the hard abrasive material of prescribed volume; The spiral cover (29) on storage tank top is opened, adopted funnel to pour in the hard abrasive material that measures, then screw spiral cover;
Step 6, adjusting mixed flow tube (30) jet vectoring debugging pressure: when observing jet air gauge (27) pressure, regulate the aperture of jet pressure valve (24), regulate pressure to the jet vectoring debugging pressure of pneumatic atomizing rapid condensation magnetic abrasive material preparation technology regulation;
The flow of step 7, adjusting hard abrasive material: regulate the aperture of material control valve (22) to the Process Planning definite value;
Step 8, adjusting mixed flow tube (30) jet vectoring pressure: when observing jet air gauge (27) pressure, regulate the aperture of jet pressure valve (24), regulate pressure to the jet vectoring pressure of process stipulation.
Described pneumatic atomizing rapid condensation magnetic abrasive material preparation send meal mixer to send mixed powder control method, and it is characterized in that: the combination of described step 1, step 2 realizes: (1) regulates material control valve to maximum opening; (2) observe the demonstration pressure of equilibrium air pressure table, adjustment air gauge pressure to 0.05～0.5MPa when the adjustment valve opening;
Pneumatic atomizing rapid condensation magnetic abrasive material preparation of the present invention is sent meal mixer and is sent mixed powder control method, owing to having designed dust feeder, mixed powder device, designed the deflector type spraying and blowing organ that injection tube-pipe cover-spray orifice consists of in dust feeder, realized sending, mixing the dual-use function of powder and the convenient of hard abrasive material flow, jet expulsion pressure controlled.Device send mixed powder function, be to do power by the single high-pressure air source that provides to realize, need not increase any other power source.this device is connected in the gas circuit of pneumatic atomizing rapid condensation powder manufacturing apparatus, just can make the pneumatic atomizing rapid condensation powder manufacturing apparatus become a kind of magnetic abrasive Preparation equipment of uniqueness, under the effect of sending meal mixer, the hard abrasive material fully mixes with gases at high pressure in the mixed flow pipeline, form Dual-Phrase Distribution of Gas olid, jet nozzle ejection through pneumatic atomizing rapid condensation equipment, the hard abrasive grain is shot in to just as bullet in the molten metal bath stream that is about to atomizing, metal liquid stream forms the fine droplet that contains the hard abrasive material through atomizing, through quick cooled and solidified, just can obtain high performance magnetic abrasive.Pneumatic atomizing rapid condensation magnetic abrasive material preparation of the present invention is sent meal mixer and is sent mixed powder control method, provides essential condition for realizing a kind of new magnetic abrasive preparation method.
Description of drawings
Fig. 1 is that the pneumatic atomizing rapid condensation magnetic abrasive material preparation send meal mixer powder feeding and mixed powder device to divide schematic diagram;
Fig. 2 is that the meal mixer structural representation is sent in the pneumatic atomizing rapid condensation magnetic abrasive material preparation;
Fig. 3 is the A section structure partial enlarged diagram of Fig. 2;
Fig. 4 is that the installation site schematic diagram of meal mixer in pneumatic atomizing rapid condensation equipment sent in pneumatic atomizing rapid condensation magnetic abrasive material preparation of the present invention.
The specific embodiment
Label in Fig. 1: C dust feeder; D mixes the powder device.
Label in Fig. 2: 14 storage tanks; 15 hard abrasive materials; 16 pipe covers; 17 pipe cover bottom spray orifices; 18 charge doors; 19 high-pressure pipes; 20 jet output interfaces; 21 blowing valves; 22 material control valves; 23 balanced valves; 24 jet pressure valves; 25 winding-up air gauges; 26 equilibrium air pressure tables; 27 jet air gauges; 28 injection tubes; 29 storage tank spiral covers; 30 mixed flow tubes; 31 sealing copper packings; 32 discharge nozzles; 33 jet pressure control tracheaes.
Label in Fig. 3: 14 storage tanks; 15 hard abrasive materials; 16 pipe covers; 17 pipe cover bottom spray orifices; 28 injection tubes.
Label in Fig. 4: 1 electric furnace; 2 motlten metals; 3 insulation crucibles; 4 let slip a remark; 5 spray chambers; 6 suction dust collecting devices; 7 dedusters; 8 receive the powder container; 9 high pressure nitrogens; 10 cooling waters; 11 magnetic abrasives; 12 send meal mixer; 13 jet nozzles.
Referring to Fig. 1.Fig. 1 is that the pneumatic atomizing rapid condensation magnetic abrasive material preparation send the pneumatic atomizing rapid condensation magnetic abrasive material preparation of meal mixer the first embodiment to send meal mixer powder feeding and mixed powder device to divide schematic diagram.The preparation of the present embodiment pneumatic atomizing rapid condensation magnetic abrasive material send meal mixer to comprise dust feeder C and mixed powder device D.
Referring to Fig. 2, coordinate referring to Fig. 1.Fig. 2 is that the meal mixer structural representation is sent in pneumatic atomizing rapid condensation magnetic abrasive material preparation of the present invention.Dust feeder C shown in Fig. 1 comprises at Fig. 2: storage tank 14, hard abrasive material 15, pipe cover 16, pipe cover bottom spray orifice 17, charge door 18, high-pressure pipe 19, jet output interface 20, blowing valve 21, material control valve 22, balanced valve 23, jet pressure valve 24, winding-up air gauge 25, equilibrium air pressure table 26, jet air gauge 27, injection tube 28, storage tank spiral cover 29, mixed flow tube 30, sealing copper packing 31 and jet pressure control tracheae 33.
High-pressure pipe 19 is connected with material control valve 22 by tee pipe coupling, and material control valve 22 joins by tee pipe coupling and blowing valve 28, jet pressure valve 24, and blowing valve 21 is connected with winding-up air inlet pipe 28.Winding-up air inlet pipe 28 is connected and extends to the epicoele position of storage tank 14 with storage tank 14, the winding-up air inlet pipe 28 between storage tank 14 bottoms and blowing valve 21 connects winding-up air gauge 25.Pipe cover 16 covers the winding-up air inlet pipe 28 of storage tank 14 inside, and pipe cover 16 lower ends are welded on the bottom of storage tank 14 inner chambers.Pipe cover 16 bottom parts have a plurality of spray orifices.The top of storage tank 14 is charge doors 18, by spiral cover 29 and sealing copper packing 31, storage tank 14 is blocked.Air-flow in winding-up air inlet pipe 28 is turned back after the inner upper end of arrival pipe cover 16, by arrival pipe cover bottom, the gap spray orifice 17 between pipe cover 16 and winding-up air inlet pipe 28, from bottom spray orifice 17 ejections of pipe cover, the hard abrasive material is sent into discharge nozzle 32.The outlet conduit of balanced valve 23 is installed equilibrium air pressure table 26, then connects the epicoele of storage tank 14.Enter the epicoele position of storage tank 14 by the air-flow of balanced valve 23, promote hard abrasive material 15 and move down, avoid occurring the scaffolding phenomenon of hard abrasive material.
Referring to Fig. 2, coordinate referring to Fig. 1.Mixed powder device D in Fig. 1 comprises at Fig. 2: high-pressure pipe 19, discharge nozzle 32, jet pressure valve 24, jet air gauge 27, mixed flow tube 30.
High-pressure pipe 19 joins with the material control valve 9 of the dust feeder C of Fig. 3, joins by three-way connection and jet pressure valve 24 simultaneously.Jet pressure control tracheae 33 is equipped with jet air gauge 27, when jet pressure control tracheae 33 joins with jet pressure valve 24, joins with discharge nozzle 32, mixed flow tube 30.High pressure draught enters mixed flow tube 30 by high-pressure pipe 19, jet pressure valve 24, jet pressure control tracheae 33 by three-way connection, and the hard abrasive material of sending here with discharge nozzle 32 in mixed flow tube 30 mixes, and forms the gas-solid dual-phase jet.
Referring to Fig. 3, coordinate referring to Fig. 2.Fig. 3 is the deflector type spraying and blowing organ in dust feeder C, this device is made of winding-up air inlet pipe 28, pipe cover 16, spray orifice 17, pipe cover 16 covers on the outside of winding-up air inlet pipe 28, and with winding-up air inlet pipe 28 coaxial lines, pipe cover 16 lower ends are welded on the bottom of storage tank 14.Pipe cover 16 lower end parts have a plurality of spray orifices.This device both can so that the hard abrasive material in storage tank 14 can not enter blowing valve 21, can guarantee again that air-flow was from the bottom position ejection of storage tank 14 inner chambers.
Referring to Fig. 4, coordinate referring to Fig. 2.Fig. 4 is that the installation site schematic diagram of meal mixer in pneumatic atomizing rapid condensation equipment sent in pneumatic atomizing rapid condensation magnetic abrasive material preparation of the present invention.Fig. 4 has shown and has sent the installation site of meal mixer 12 in the pneumatic atomizing rapid condensation magnetic abrasive material preparation facilities.In Fig. 4, the high pressure draught of high-pressure air source enters from the entrance that send meal mixer 12, and the mixed powder air-flow that flows out from the outlet of sending meal mixer 12 enters high-speed jet nozzle 13 in spray chamber 5 through mixed flow tube 30.High pressure in mixed flow tube 30 mixes the powder jet, enter the rear high velocity jet of high-speed jet nozzle 13 and go out, the hard abrasive grain is with high velocity air, be shot in to as bullet in the molten metal bath stream that is about to be atomized, metal liquid stream forms the fine droplet that contains the hard abrasive material through atomizing, through quick cooled and solidified, thereby form high performance magnetic abrasive.Gas in high-pressure air source is generally pressure at nitrogen or the helium of 50～100MPa.
Claims (4)
1. a pneumatic atomizing rapid condensation magnetic abrasive material preparation with sending meal mixer, is characterized in that: comprise dust feeder and mixed powder device;
Described dust feeder comprises: storage tank (14), pipe cover (16), pipe cover bottom spray orifice (17), charge door (18), jet output interface (20), blowing valve (21), material control valve (22), balanced valve (23), winding-up air gauge (25), equilibrium air pressure table (26), injection tube (28), storage tank spiral cover (29), mixed flow tube (30), sealing copper packing (31) and jet pressure control tracheae (33);
Described mixed powder device comprises: high-pressure pipe (19), discharge nozzle (32), jet pressure valve (24), jet air gauge (27), mixed flow tube (30);
The high-pressure pipe of described mixed powder device (19) and high-pressure air source are joined, and the high-speed jet nozzle (13) of mixed flow tube (30) outlet and aerosolization chamber joins;
Described high-pressure pipe (19) is connected with material control valve (22) by tee pipe coupling, material control valve (22) joins by tee pipe coupling and blowing valve (21), jet pressure valve (24), blowing valve (21) is connected with injection tube (28), injection tube (28) and storage tank (14) are connected and extend to the epicoele position of storage tank (14), are connected winding-up air gauge (25) in storage tank (14) bottom with injection tube (28) between blowing valve (21); Pipe cover (16) injection tube (28) that storage tank (14) is inner covers, and pipe cover (16) lower end is welded on the bottom of storage tank (14) inner chamber, and pipe cover (16) bottom has a plurality of spray orifices (17); The top of storage tank (14) is charge door (18), by spiral cover (29) and sealing copper packing (31), storage tank (14) is blocked, turn back after the inner upper end of the air-flow arrival pipe cover (16) in injection tube (28), arrive pipe cover bottom spray orifice (17) by the gap between pipe cover (16) and injection tube (28), from pipe cover bottom spray orifice (17) ejection, the hard abrasive material is sent into discharge nozzle (32); The outlet conduit of balanced valve (23) is installed equilibrium air pressure table (26), then the epicoele that connects storage tank (14), enter the epicoele position of storage tank (14) by the air-flow of balanced valve (23), promote the hard abrasive material and move down, avoid occurring the scaffolding phenomenon of hard abrasive material;
Described jet pressure control tracheae (33) is equipped with jet air gauge (27), and jet pressure control tracheae (33), joins with discharge nozzle (32), mixed flow tube (30) when joining with jet pressure valve (24); High pressure draught is by high-pressure pipe (19), jet pressure valve (24), jet pressure control tracheae (33), enter mixed flow tube (30) by three-way connection, the hard abrasive material of sending here with discharge nozzle (32) in mixed flow tube (30) mixes, and forms the gas-solid dual-phase jet.
2. pneumatic atomizing rapid condensation magnetic abrasive material preparation according to claim 1 with sending meal mixer, is characterized in that: described storage tank is as a kind of pressure vessel, and its design bearing pressure is not less than 10MPa.
3. pneumatic atomizing rapid condensation magnetic abrasive material according to claim 1 preparation is with sending meal mixer, and it send and mixes the powder function is that the pure gas that provides by high-pressure air source and the pressure of controlling air-flow are realized, without any need for other power source.
One kind pneumatic atomizing rapid condensation magnetic abrasive material preparation is with sending sending of meal mixer mixed powder control method according to claim 1, its step is as follows:
Step 1, jet pressure valve (24), balanced valve (23), blowing valve (21), material control valve (22) are placed in closed condition;
Step 2, equalizing pressure are regulated:
(1) regulate material control valve (22) to maximum opening;
(2) observe the demonstration pressure of equilibrium air pressure table (26), adjustment air gauge (26) pressure to 0.05～0.5MPa when adjustment valve (23) aperture;
Step 3, jetting pressure are regulated: observe the demonstration pressure of winding-up air gauge (25) in the time of regulation blowing valve (21) aperture, the barometric pressure to 1 of regulation blowing～3MPa;
Step 4, close material control valve (22);
Step 5, the can of hard abrasive material: according to the design capacity of storage tank (14), measure by volume the hard abrasive material of prescribed volume; The spiral cover (29) on storage tank top is opened, adopted funnel to pour in the hard abrasive material that measures, then screw spiral cover;
Step 6, adjusting mixed flow tube (30) jet vectoring debugging pressure: when observing jet air gauge (27) pressure, regulate the aperture of jet pressure valve (24), regulate pressure to the jet vectoring debugging pressure of pneumatic atomizing rapid condensation magnetic abrasive material preparation technology regulation;
The flow of step 7, adjusting hard abrasive material: regulate the aperture of material control valve (22) to the Process Planning definite value;
Step 8, adjusting mixed flow tube (30) jet vectoring pressure: when observing jet air gauge (27) pressure, regulate the aperture of jet pressure valve (24), regulate pressure to the jet vectoring pressure of process stipulation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110156047.3A CN102328091B (en) | 2011-06-11 | 2011-06-11 | Powder feeding and mixing device for preparing magnetic grinding material through atomization and rapid solidification and powder feeding and mixing method |
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| CN201110156047.3A CN102328091B (en) | 2011-06-11 | 2011-06-11 | Powder feeding and mixing device for preparing magnetic grinding material through atomization and rapid solidification and powder feeding and mixing method |
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| DE102004001346A1 (en) * | 2003-01-09 | 2004-07-29 | Tribovent Verfahrensentwicklung Gmbh | Atomizer making powder or coatings from molten metal and ceramics, supplies melt continuously to feed chamber, to leave via concentric annular jet into atomization zone |
| CN201330079Y (en) * | 2008-12-30 | 2009-10-21 | 滕耘 | Turbulent flow transfer pump |
| CN101899282A (en) * | 2010-06-23 | 2010-12-01 | 山东理工大学 | Preparation method of pneumatic atomizing rapid condensation magnetic abrasive material |
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