CN205821426U - A kind of carborundum stirring adding set - Google Patents

Abstract

The utility model discloses a kind of carborundum stirring adding set.Comprising: aluminum alloy smelting furnace, its body of heater is provided with multi-functional bell；Graphite crucible, is placed in the body of heater of described aluminum alloy smelting furnace；Liftable vane type mixing component, its shaft is located in described multi-functional bell；Logical nitrogen pipe, corresponding described graphite crucible is arranged on described multifunctional furnace lid；Temperature thermocouple, is movably arranged on described multifunctional furnace lid；With carborundum adding set, it is arranged on described multifunctional furnace lid.The logical carborundum being used in Monosized powder in high-quality mark SiCpAl composite material and preparation method thereof of this utility model adds whipping step, prepares the concentration SiCp/Al composite higher than 40%, and favorable reproducibility.

Description

A kind of carborundum stirring adding set

Technical field

This utility model patent relates to a kind of technical field of composite preparation, be specifically related to a kind of Relative Size single, Less than the middle high-quality mark enhancing aluminum-base composite material by silicon carbide particles of 15 μm (mesh number be higher than 800), (SiCp/Al is combined particle diameter Material) process of preparing in carborundum add step carborundum stirring adding set.

Background technology

The preparation method of SiCp/Al composite is more, such as powder metallurgic method, stirring casting method, spray co deposition method, true Empty pressure infiltration method etc..In above-mentioned several preparation methoies, manufacturing technique is relatively simple, casting because having for stirring casting method Make the advantages such as mouldability is stronger, be one of method of enjoying researcher to pay close attention at present.Stirring casting method is used to prepare SiCp/Al multiple Condensation material, main flow has ultrasonic stirring method, electromagnetic stirring method and mechanical mixing method etc., and wherein the equipment of mechanical mixing method is simpler Single, the controllability of technique is higher.Although, domestic experts and scholars have carried out substantial amounts of research in this field, and use machinery The report that paddling process prepares the content SiCp/Al composite less than 30% is the most more, but, use mechanical mixing method preparation to contain The amount SiCp/Al composite more than 30% does not appears in the newspapers, and is one of technical barrier.

Utility model content

In place of first purpose of the present utility model is for the deficiencies in the prior art, it is provided that a kind of Relative Size list One, particle diameter adds in whipping step less than the carborundum of the middle high-quality mark SiCp/Al composite material and preparation method thereof of 15 μm Carborundum adds agitating device.

For reaching above-mentioned purpose, this utility model adopts the following technical scheme that

A kind of carborundum stirring adding set, including: aluminum alloy smelting furnace, its body of heater is provided with multi-functional bell；Graphite Crucible, is placed in the body of heater of described aluminum alloy smelting furnace；Liftable vane type mixing component, its shaft is located in described many merits In energy bell；Logical nitrogen pipe, corresponding described graphite crucible is arranged on described multifunctional furnace lid；Temperature thermocouple, with removable side Formula is arranged on described multifunctional furnace lid；With carborundum adding set, it is arranged on described multifunctional furnace lid.

As preferably, described carborundum adding set includes: carborundum preheating insulation stove, and it is arranged on institute by bracing frame State on multifunctional furnace lid；Carborundum flowing mixing component, is arranged in described carborundum preheating insulation stove；Carborundum flow adjusts Valve, is arranged on the bottom of carborundum preheating insulation stove；Aluminum alloy conduit, its upper end is with described carborundum flow control valve even Connecing, its body tilts stretch into described alloy smelting furnace and be suspended on described graphite crucible；With low-voltage micro-burst motor, if Put on described aluminum alloy conduit.

As preferably, described liftable vane type mixing component includes: frequency conversion type liftable stirring motor, is arranged on described The surface of aluminum alloy smelting furnace；Shaft, its one end is connected with described frequency conversion type liftable stirring motor, and its axis body is vertically worn It is located in described multi-functional bell；With at least one of which agitator arm, it is connected with frequency conversion motor by shaft.

Further, the number of plies of described agitator arm is two-layer.

This utility model, by using said structure, can be used for high-quality mark SiCpAl composite system in Monosized powder Carborundum in Preparation Method adds whipping step, prepares the concentration SiCp/Al composite higher than 40%, and repeatability Good.

Accompanying drawing explanation

Fig. 1 is the structural representation of carborundum described in the utility model stirring adding set.

Fig. 2 is the SiCp/Al microstructure of composite shape characteristic figure of 41% content.

Fig. 3 is the SiCp/Al microstructure of composite shape characteristic figure of 42% content.

Fig. 4 is the SiCp/Al microstructure of composite shape characteristic figure of 44% content.

In figure:

The 11 multi-functional bells of stove；12 bodies of heater；2 graphite crucibles；31 frequency conversion type liftable stirring motors；32 stir Mix axle；33 agitator arms；4 lead to nitrogen pipe；5 temperature thermocouples；61 carborundum preheating insulation stoves；62 bracing frames； 63 carborundum flowing mixing components；64 carborundum flow control valves；65 aluminum alloy conduits；66 low-voltages are miniature shakes Galvanic electricity machine.

In conjunction with drawings and Examples, this utility model is described in further detail.

Detailed description of the invention

As it is shown in figure 1, carborundum described in the utility model stirring adding set is mainly by aluminum alloy smelting furnace, graphite earthenware Crucible 2, liftable vane type mixing component, logical nitrogen pipe 4, temperature thermocouple 5 and carborundum adding set composition.Aluminum alloy smelting furnace Body of heater 12 be provided with multi-functional bell 11, this aluminum alloy smelting furnace can be used for implementing above-mentioned aluminum base metal liquid degasification slagging-off step Suddenly.Graphite crucible 2 is placed in the body of heater 12 of aluminum alloy smelting furnace.Liftable vane type mixing component is mainly by frequency conversion type liftable Stirring motor 31, shaft 32 and two-layer agitator arm 33 form: frequency conversion type liftable stirring motor 31 is arranged on aluminium alloy and melts The top of furnace；One end of shaft 32 is connected with frequency conversion type liftable stirring motor 31, and its axis body is vertically located in multi-functional In bell 11；Two-layer agitator arm is arranged on the other end of shaft 32.The corresponding graphite crucible 2 of logical nitrogen pipe 4 is arranged on multi-functional On bell 11.Temperature thermocouple 5 is movably arranged on multi-functional bell 11.Carborundum adding set correspondence graphite earthenware Crucible 2 is arranged on multi-functional bell 11.It is mainly by carborundum preheating insulation stove 61, carborundum flowing mixing component 63, carbonization Silicon flow control valve 64, aluminum alloy conduit 65 and low-voltage micro-burst motor 66 form.Carborundum preheating insulation stove 61 leads to Cross bracing frame 62 to be arranged on multi-functional bell 11, the carborundum in preheating insulation stove.Carborundum flowing mixing component 63 It is arranged in carborundum preheating insulation stove 61, makees the guiding stirring of carborundum.Carborundum flow control valve 64 is arranged on carbonization The bottom of silicon preheating insulation stove 61, for adjusting the flow of carborundum.The upper end of aluminum alloy conduit 65 adjusts with carborundum flow Valve connects, and its body tilts stretch into alloy smelting furnace 12 and be suspended on graphite crucible 2.Low-voltage micro-burst motor 66 sets Put on aluminum alloy conduit 65, play vibration guiding function.

In Monosized powder described in the utility model, the preparation method of high-quality mark SiCp/Al composite is mainly by carbon Silicon carbide particle pre-treatment step, aluminum base metal liquid degasification slug removing step and silicon-carbide particle add step composition.

1, the pre-treatment step of silicon-carbide particle:

For add for α-SiCp granule, particle diameter less than the single mesh number granule of 15 μm.Concrete pre-treatment step is: HF pickling → deionized water cleans → dries → 900～1000 DEG C of high-temperature oxydation → grindings.For cleaning the HF of α-SiCp granule Solution concentration is 10～15%, stirring and washing 24h, and liquid-solid ratio is 6:4 to 7:3.Through HF clean SiCp subsequently with substantial amounts of Deionized water clean, put into after drying high temperature oxidation process in high temperature furnace (oxidation processing technique be 300 ± 20 DEG C baking 90min, 650 ± 20 baking 120min, then heat to 950 ± 50 DEG C of baking 360min, cool to room temperature subsequently with the furnace).Warp after coming out of the stove Grinding and be positioned in drying basin sealing preservation again, granule need to be dried baking process before interpolation in alloy at 300～350 DEG C.

2, aluminum base metal liquid degasification slug removing step:

Silicon-carbide particle needs aluminium alloy is carried out degasification, slagging-off before adding, and aluminum matrix alloy selects aluminum-silicon or aluminum-silicon-magnesium One in alloy.Concretely comprise the following steps: be warming up to 720 ± 10 DEG C after being melted in stove by aluminum matrix alloy, then toward aluminum fund Belong to liquid adds the Mg of aluminum matrix alloy quality 2-4%, aluminum matrix alloy quality 0.2～the Al-Ti-B refiner of 0.3% and The Al-Si alloy of 2%, uniformly sprinkles the universal deslagging agent of aluminum matrix alloy quality 0.5% simultaneously on aluminum base metal liquid surface Aluminum base metal liquid is covered, after constant temperature, uses nitrogen degasification slagging-off, slag hitting after ventilation 10min.

3, silicon-carbide particle interpolation step:

Use the stirring adding set of the carborundum shown in Fig. 1 to carry out silicon-carbide particle and add step, concrete carborundum Grain adds step: the aluminum base metal liquid of the deaerated step process that removes slag, and covers multi-functional bell, first passes through in logical nitrogen Guan Xianglu Being passed through nitrogen 10 to 15min, subsequently natural cooling, temperature thermocouple is moved in graphite crucible and surveys molten metal by period Temperature, retracts origin-location by temperature thermocouple after molten metal is cooled to 560-615 DEG C, forms semisolid；By agitator arm with Motor is connected, and drop in semi-solid slurry, stirs slurry in the way of 500～700rpm, adjusts stream by regulation The carborundum of preheating in carborundum preheating insulation stove is passed through the aluminum alloy conduit centre to the whirlpool formed by amount valve Add rate uniform with 10～20g/min.The effective diameter of agitator arm is about 0.6～0.7 times of graphite crucible internal diameter, Along with the increase of silicon-carbide particle, sporadically adjust the position of agitator arm by lifting motor and adjust speed of agitator, While ensureing that stirring is formed without excessive whirlpool, the slurry agitation in graphite crucible also can be made uniform.Carbonization is added in stirring During silicon, body of heater needs suitably heating, makes the temperature in stove be unlikely to reduce too fast.After silicon-carbide particle has added, Lead to the nitrogen of 5-10min again, and be warming up to 600-700 DEG C, stir 10-15 minute with the mixing speed of 300rpm, then take out Water in the type groove mould hollow cold molding of 300 DEG C of preheatings.By said method, carborundum mass fraction can be manufactured and be not less than The SiCp/Al composite of 40%.Embodiment 1-3

As a example by carborundum addition is 41%, 42%, 43%, prepare SiCp/Al composite as stated above.It is close Degree and consistency numerical value are shown in Table 1, and tissue topography's feature of composite is shown in Fig. 2-4.

Table 1: the density of test material and consistency numerical value

Claims (4)

1. a carborundum stirring adding set, adds for the silicon-carbide particle implemented in SiCp/Al composite material and preparation method thereof Add and whipping step, it is characterised in that including:

Aluminum alloy smelting furnace, its body of heater is provided with multi-functional bell；

Graphite crucible, is placed in the body of heater of described aluminum alloy smelting furnace；

Liftable vane type mixing component, its shaft is located in described multi-functional bell；

Logical nitrogen pipe, corresponding described graphite crucible is arranged on described multifunctional furnace lid；

Temperature thermocouple, is movably arranged on described multifunctional furnace lid；With

Carborundum adding set, is arranged on described multifunctional furnace lid.

A kind of carborundum stirring adding set the most according to claim 1, it is characterised in that described carborundum adding set Including:

Carborundum preheating insulation stove, it is arranged on described multifunctional furnace lid by bracing frame；

Carborundum flowing mixing component, is arranged in described carborundum preheating insulation stove；

Carborundum flow control valve, is arranged on the bottom of carborundum preheating insulation stove；

Aluminum alloy conduit, its upper end is connected with described carborundum flow control valve, and its body tilts to stretch into described alloy melting Stove is also suspended on described graphite crucible；With

Low-voltage micro-burst motor, is arranged on described aluminum alloy conduit.

A kind of carborundum stirring adding set the most according to claim 1, it is characterised in that described liftable vane type stirs Mix assembly to include:

Frequency conversion type liftable stirring motor, is arranged on the surface of described aluminum alloy smelting furnace；

Shaft, its one end is connected with described frequency conversion type liftable stirring motor, and its axis body is vertically located in described multifunctional furnace Gai Zhong；With at least one of which agitator arm, it is connected with frequency conversion motor by shaft.

A kind of carborundum stirring adding set the most according to claim 3, it is characterised in that the number of plies of described agitator arm It it is two-layer.