CN102398016A - Feeding device of reinforcing particles of metallic matrix composite material cast by vacuum mixing - Google Patents
Feeding device of reinforcing particles of metallic matrix composite material cast by vacuum mixing Download PDFInfo
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- CN102398016A CN102398016A CN2011103842281A CN201110384228A CN102398016A CN 102398016 A CN102398016 A CN 102398016A CN 2011103842281 A CN2011103842281 A CN 2011103842281A CN 201110384228 A CN201110384228 A CN 201110384228A CN 102398016 A CN102398016 A CN 102398016A
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Abstract
The invention provides a feeding device of reinforcing particles of a metallic matrix composite material cast by vacuum mixing, which comprises a vacuum mixing smelting furnace and a hopper, wherein a vacuum mixing smelting furnace cover is arranged at the upper end of the vacuum mixing smelting furnace; a particle conveying device is arranged at the side upper part of the vacuum mixing smelting furnace cover through a bracket and is obliquely arranged; the upper end of the particle conveying device is communicated with the bottom end of the hopper through a hose; a vacuum valve is arranged on a bottom end port of the hopper; a hopper cover is arranged at the top end of the hopper and is connected with a vacuumizing bypass interface which is connected with a vacuumizing system; an inert gas sweeping device is also arranged on the hopper cover and is arranged in the hopper; and the inert gas sweeping device is connected with an inert gas source device through an external interface. According to the feeding device, the feeding mount and the feeding speed of particles can be accurately controlled and the aims of improving the quality of the composite material and the quality stability are achieved.
Description
Technical field
The present invention relates to a kind of feeding device of vacuum stirring casting particles reiforced metal-base composition, belong to the Composite Preparation field.
Background technology
Development of modern science and technology requires increasingly highly to material property, and homogenous material often is difficult to satisfy instructions for use.Compare with traditional metal materials; Particles reiforced metal-base composition has advantages such as higher specific strength, specific stiffness, anti-wear performance and thermal coefficient of expansion are little; Have very big material design freedom simultaneously, therefore be described as the new material of 21 century, become the focus of domestic and international investigation of materials.
Prepare particles reiforced metal-base composition method commonly used methods such as powder metallurgy, jet deposition and vacuum stirring casting are arranged.Wherein the vacuum stirring casting is meant enhanced granule is added metal bath in some way, and the eddy current that under vacuum condition, relies on the stirring-head rotation to produce is forced enhanced granule to bring into and be evenly distributed in the melt.Because the vacuum stirring casting is low for equipment requirements, technology is simple, be fit to produce continuously, be hopeful to realize large-scale industrial production most.
Because enhanced granule and parent metal melt wetability are poor, so enhanced granule need carry out preliminary treatment before the adding melt, to improve both wettabilities.Against vacuum stirring casting technology, it is key link that pretreated particle is all stirred in the melt at short notice.
Chinese patent publication number CN1676237A discloses the two stirring means of a kind of vacuum machine, and this method with the disposable high-temperature fusant surface that is added to of enhanced granule, vacuumizes then and carries out stirring casting under non-vacuum condition.The problem that this method exists is that particle amasss for a long time in bath surface and can cause that particle temperature raises and conglomeration has increased its dispersion difficulty in melt; Particle contacts high-temperature fusant and can form oxidizing slag under non-vacuum condition simultaneously, reduces the quality of composite.
Chinese patent publication number CN101157996A and CN101158001A; The device of another kind of preparation particle enhanced aluminum-based composite material is disclosed; Its particle adding method is that a pretreatment of particles stove is installed above the melting furnace side; Particle adopts the method for heating to carry out preliminary treatment in this stove, and under vacuum condition, particle is sent into smelting furnace by feed mechanism.The problem that this method exists is that particle will carry out long-time high-temperature process in the preliminary treatment stove, causes the distortion of preliminary treatment stove easily, the vacuum seal of the whole table apparatus of influence.And enhanced granule very easily be adsorbed on preliminary treatment stove inwall, feed mechanism and and transmission channel between the slit in, can't accurately control the particle addition, be difficult to guarantee composite quality stability.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, provide
OnePlant the enhanced granule adding apparatus of vacuum stirring casting metal based composite material, can accurately control the particle adding apparatus of particle addition, adding speed, reach the purpose that improves composite quality and quality stability.
The object of the invention is realized through following technical scheme:
A kind of enhanced granule adding apparatus of vacuum stirring casting metal based composite material comprises vacuum stirring smelting furnace, hopper, and the upper end of said vacuum stirring smelting furnace is equipped with vacuum stirring melting bell; It is characterized in that: the side top of said vacuum stirring melting bell is equipped with the particle transport device through support; The particle transport device is and is in tilted layout, and the upper end of said particle transport device is connected with the hopper bottom through flexible pipe, on the hopper bottom nozzle, is provided with vacuum valve; On the top of said hopper hopper cover is installed; Be connected on the hopper cover and vacuumize the bypass interface, vacuumize the bypass interface and link to each other, the inert blowing gas sweeping device also is installed on the said hopper cover with pumped vacuum systems; The inert blowing gas sweeping device is in hopper, and the inert blowing gas sweeping device links to each other with the indifferent gas source apparatus through external tapping;
Said particle transport device comprises adjustable speed motor, feeding screw, insulation passage and angle adjustable discharging opening; One end of said feeding screw links to each other with insulation passage one end; Its direction is parallel, and the insulation passage other end passes vacuum stirring melting bell and extends in the vacuum stirring smelting furnace, and links to each other with the scalable discharging opening; The other end of said feeding screw drives with adjustable speed motor and is connected, and said insulation passage upside has an opening and is connected with flexible pipe.
Further, the enhanced granule adding apparatus of above-mentioned a kind of vacuum stirring casting metal based composite material, wherein, the scalable discharging opening is connected with the outer rotary crank of vacuum stirring melting bell through dynamic sealing device.
Further, the enhanced granule adding apparatus of above-mentioned a kind of vacuum stirring casting metal based composite material, wherein, the angle of inclination of particle transport device at 0o in 90o.
Further, the enhanced granule adding apparatus of above-mentioned a kind of vacuum stirring casting metal based composite material, wherein, hopper is made up of smooth metal or ceramic-lined, heat-insulation layer and metal shell.
The substantive distinguishing features of technical scheme of the present invention is mainly reflected in progressive:
Hopper among the present invention is circumscribed with pumped vacuum systems; Hopper and vacuum stirring smelting furnace carry out respectively when vacuumizing; Particles clog hopper outlet in the time of can avoiding integral body to vacuumize; Directly particle is sent into the vacuum stirring smelting furnace by feed mechanism after reaching required vacuum, can effectively avoid forming oxidizing slag behind the enhanced granule contact high-temperature fusant in the vacuum; Through changing the rotating speed of feeding screw, can accurately control enhanced granule and add speed simultaneously, avoid particle to pile up at bath surface; The insulation passage of inert blowing gas sweeping device and inclination can make the enhanced granule in the hopper all get in the vacuum stirring smelting furnace, avoids it to stick on hopper liner and the conveying mechanism; Simultaneously because the existence of inert gas in the vacuum stirring smelting furnace can reduce the volatilization of alloying element; The discharging opening of angle adjustable can be avoided colliding with it in the vacuum drying oven rabbling mechanism lifting process, and can under vacuum environment, accurately control the position that particle adds.
Description of drawings
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Fig. 1: structural representation of the present invention;
Fig. 2: the external sketch map of angle adjustable discharging opening;
Fig. 3: the operation principle sketch map of angle adjustable discharging opening.
The specific embodiment
As shown in Figure 1, a kind of enhanced granule adding apparatus of vacuum stirring casting metal based composite material comprises vacuum stirring smelting furnace 16, hopper 3; The upper end of vacuum stirring smelting furnace 6 is equipped with vacuum stirring melting bell 15, and the side of vacuum stirring melting bell 15 top is equipped with particle transport device 20 through support 1, and particle transport device 20 is and is in tilted layout; The angle of inclination of its particle transport device 20 can be on the optional position of 0o in the 90o; The upper end of particle transport device 20 is connected with hopper 3 bottoms through flexible pipe, and hopper 3 is made up of smooth metal or ceramic-lined 4, heat-insulation layer 5 and metal shell 6, on hopper 3 bottom nozzles, is provided with vacuum valve 11; Hopper cover 8 is installed on the top of hopper 3; Be connected on the hopper cover 8 and vacuumize bypass interface 7, vacuumize bypass interface 7 and link to each other, inert blowing gas sweeping device 9 also is installed on the hopper cover 8 with pumped vacuum systems 17; Inert blowing gas sweeping device 9 is in hopper 3, and inert blowing gas sweeping device 9 links to each other with indifferent gas source apparatus 10 through external tapping; Particle transport device 20 comprises adjustable speed motor 2, feeding screw 12, insulation passage 13 and angle adjustable discharging opening 14; One end of feeding screw 12 links to each other with insulation passage 13 1 ends; Its direction is parallel; Insulation passage 13 other ends pass vacuum stirring melting bell 15 and extend in the vacuum stirring smelting furnace 16, and link to each other with scalable discharging opening 14, and the other end of feeding screw 12 drives with adjustable speed motor 2 and is connected; Thereby accurately control the adding speed of enhanced granule, insulation passage 13 upsides have an opening and are connected with flexible pipe.
Like Fig. 2, shown in Figure 3; Scalable discharging opening 14 is connected with vacuum stirring melting bell 15 outer rotary cranks 18 through dynamic sealing device 19; Make its scalable discharging opening 14 can adjust different angle positions, can avoid touching mutually with it in the lowering or hoisting gear lifting process in the vacuum stirring smelting furnace 16.
During concrete the application, at first enhanced granule is carried out the high temperature preliminary treatment after 2 ~ 3 hours, when particle temperature is reduced to 200 ~ 500 ℃, open hopper cover 8; Close vacuum valve 11 simultaneously, pour enhanced granule into hopper 3 weights, close to open after the hopper cover 8 and vacuumize bypass interface 7; Processing such as metal molten, degasification refining, slag hitting have been accomplished in the vacuum stirring smelting furnace 16 at this moment; Then close vacuum stirring melting bell 15, begin vacuum stirring smelting furnace 16 is vacuumized through pumped vacuum systems 17 then, after vacuum reaches requirement, close pumped vacuum systems 17; Open vacuum valve 11; Restart adjustable speed motor 2, adjustable speed motor 2 drives feeding screw 12 enhanced granule is sent in the vacuum stirring smelting furnace 16, starts inert blowing gas sweeping device 9 during reinforced will the end; With inert gas residual particles is all sent in the vacuum stirring smelting furnace 16, realized using to greatest extent.
Wherein, Particle transport device 20 is 0o and all gets in the vacuum stirring smelting furnace 16 to the enhanced granule that the inclination placement of 90o and inert blowing gas sweeping device 9 purge in can hopper 3; After finishing, the particle high-temperature preliminary treatment adds material bin 3 again; Close vacuum valve 11, hopper 3 vacuumizes separately, the outlet of particles clog hopper 3 in the time of can avoiding integral body to vacuumize; In the particle adition process, start inert blowing gas sweeping device 9 simultaneously, inert gas can be blown into the particle in gap between the liner 4, feeding screw 12 and the insulation passage 13 that are bonded in the hopper 3 in the vacuum stirring smelting furnace 16, can accurately guarantee the particle addition.Simultaneously, because the existence of inert gas can reduce the vacuum in the vacuum stirring smelting furnace 16, the volatilization that alleviates alloying element to a certain extent.
In sum; The present invention is provided with pumped vacuum systems through hopper; Hopper and vacuum stirring smelting furnace carry out respectively when vacuumizing; Particles clog hopper outlet in the time of can avoiding integral body to vacuumize is directly sent particle into the vacuum stirring smelting furnace by feed mechanism after reaching required vacuum, can effectively avoid forming oxidizing slag behind the enhanced granule contact high-temperature fusant in the vacuum; Through changing the rotating speed of feeding screw, can accurately control enhanced granule and add speed simultaneously, avoid particle to pile up at bath surface.The insulation passage of inert blowing gas sweeping device and inclination can make the enhanced granule in the hopper all get in the vacuum stirring smelting furnace, avoids it to stick on hopper liner and the conveying mechanism.Simultaneously because the existence of inert gas in the vacuum stirring smelting furnace can reduce the volatilization of alloying element.The discharging opening of angle adjustable can be avoided colliding with it in the vacuum drying oven rabbling mechanism lifting process, and can under vacuum environment, accurately control the position that particle adds.
It is emphasized that: above only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction; Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
1. the enhanced granule adding apparatus of a vacuum stirring casting metal based composite material comprises vacuum stirring smelting furnace, hopper, and the upper end of said vacuum stirring smelting furnace is equipped with vacuum stirring melting bell; It is characterized in that: the side top of said vacuum stirring melting bell is equipped with the particle transport device through support; The particle transport device is and is in tilted layout, and the upper end of said particle transport device is connected with the hopper bottom through flexible pipe, on the hopper bottom nozzle, is provided with vacuum valve; On the top of said hopper hopper cover is installed; Be connected on the hopper cover and vacuumize the bypass interface, vacuumize the bypass interface and link to each other, the inert blowing gas sweeping device also is installed on the said hopper cover with pumped vacuum systems; The inert blowing gas sweeping device is in hopper, and the inert blowing gas sweeping device links to each other with the indifferent gas source apparatus through external tapping;
Said particle transport device comprises adjustable speed motor, feeding screw, insulation passage and angle adjustable discharging opening; One end of said feeding screw links to each other with insulation passage one end; Its direction is parallel, and the insulation passage other end passes vacuum stirring melting bell and extends in the vacuum stirring smelting furnace, and links to each other with the scalable discharging opening; The other end of said feeding screw drives with adjustable speed motor and is connected, and said insulation passage upside has an opening and is connected with flexible pipe.
2. the enhanced granule adding apparatus of a kind of vacuum stirring casting metal based composite material according to claim 1 is characterized in that: said scalable discharging opening is connected with the outer rotary crank of vacuum stirring melting bell through dynamic sealing device.
3. the enhanced granule adding apparatus of a kind of vacuum stirring casting metal based composite material according to claim 1 is characterized in that: the angle of inclination of said particle transport device at 0o in 90o.
4. the enhanced granule adding apparatus of a kind of vacuum stirring casting metal based composite material according to claim 1 is characterized in that: said hopper is made up of smooth metal or ceramic-lined, heat-insulation layer and metal shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103842281A CN102398016A (en) | 2011-11-28 | 2011-11-28 | Feeding device of reinforcing particles of metallic matrix composite material cast by vacuum mixing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103842281A CN102398016A (en) | 2011-11-28 | 2011-11-28 | Feeding device of reinforcing particles of metallic matrix composite material cast by vacuum mixing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106335008A (en) * | 2016-08-30 | 2017-01-18 | 合肥通用机械研究院 | Abrasive blockage prevention outlet control device |
| CN107381060A (en) * | 2017-07-31 | 2017-11-24 | 四川聚能核技术工程有限公司 | Powder material automatic feeding device and method under a kind of new type high temperature vacuum environment |
| CN107460326A (en) * | 2017-10-10 | 2017-12-12 | 湖南金马有邻环保科技有限公司 | A kind of zinc-nickel skin continuous vacuum smelts retort |
| CN109332651A (en) * | 2018-12-03 | 2019-02-15 | 湖南文昌新材科技股份有限公司 | A kind of composite material vacuum stirring suction casting process |
| CN112813293A (en) * | 2020-12-30 | 2021-05-18 | 广东省科学院材料与加工研究所 | Metal titanium particle reinforced magnesium-based composite material and vacuum stirring casting method and application thereof |
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| US4759995A (en) * | 1983-06-06 | 1988-07-26 | Dural Aluminum Composites Corp. | Process for production of metal matrix composites by casting and composite therefrom |
| JPH01313180A (en) * | 1988-06-13 | 1989-12-18 | Nippon Steel Corp | Production of composite material of al metal |
| CN101158001A (en) * | 2007-11-23 | 2008-04-09 | 苏州有色金属研究院有限公司 | Vacuum stirring composite granule reinforcing aluminium-based composite material and preparation technique thereof |
| CN101613809A (en) * | 2009-07-10 | 2009-12-30 | 苏州有色金属研究院有限公司 | The device of preparation particles reiforced metal-base composition |
| CN201456239U (en) * | 2009-07-14 | 2010-05-12 | 重汽集团专用汽车公司 | Silo revolving device of concrete mixer truck |
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| CN102140685A (en) * | 2010-02-03 | 2011-08-03 | 中国科学院福建物质结构研究所 | Vacuum continuous feeding system used for polycrystalline silicon smelting furnace |
| CN202415657U (en) * | 2011-11-28 | 2012-09-05 | 苏州有色金属研究院有限公司 | Reinforced particle adding device for stirring and casting metal-base composite materials in vacuum state |
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2011
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Patent Citations (8)
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| US4759995A (en) * | 1983-06-06 | 1988-07-26 | Dural Aluminum Composites Corp. | Process for production of metal matrix composites by casting and composite therefrom |
| JPH01313180A (en) * | 1988-06-13 | 1989-12-18 | Nippon Steel Corp | Production of composite material of al metal |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106335008A (en) * | 2016-08-30 | 2017-01-18 | 合肥通用机械研究院 | Abrasive blockage prevention outlet control device |
| CN107381060A (en) * | 2017-07-31 | 2017-11-24 | 四川聚能核技术工程有限公司 | Powder material automatic feeding device and method under a kind of new type high temperature vacuum environment |
| CN107460326A (en) * | 2017-10-10 | 2017-12-12 | 湖南金马有邻环保科技有限公司 | A kind of zinc-nickel skin continuous vacuum smelts retort |
| CN109332651A (en) * | 2018-12-03 | 2019-02-15 | 湖南文昌新材科技股份有限公司 | A kind of composite material vacuum stirring suction casting process |
| CN112813293A (en) * | 2020-12-30 | 2021-05-18 | 广东省科学院材料与加工研究所 | Metal titanium particle reinforced magnesium-based composite material and vacuum stirring casting method and application thereof |
| CN112813293B (en) * | 2020-12-30 | 2022-01-18 | 广东省科学院材料与加工研究所 | Metal titanium particle reinforced magnesium-based composite material and vacuum stirring casting method and application thereof |
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Application publication date: 20120404 |