CN106944605A - A kind of operating method of disappearance die-cast aluminum device - Google Patents
A kind of operating method of disappearance die-cast aluminum device Download PDFInfo
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- CN106944605A CN106944605A CN201710378049.4A CN201710378049A CN106944605A CN 106944605 A CN106944605 A CN 106944605A CN 201710378049 A CN201710378049 A CN 201710378049A CN 106944605 A CN106944605 A CN 106944605A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/20—Stack moulds, i.e. arrangement of multiple moulds or flasks
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- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
A kind of operating method of disappearance die-cast aluminum device, crucible equipped with aluminium liquid is put into lower hermetically sealed can, the lost foam pattern cluster for having gone up coating is put into hermetically sealed can, upper hermetically sealed can and lower hermetically sealed can are connected as a single entity, high temperature aluminium liquid enters upper hermetically sealed can with 0.45~0.5m/s flow velocity from bottom to top along woven hose under pressure, and lost foam pattern cluster is gasified by high temperature aluminium liquid to be exported by vacuum tube；After casting, when pressure in lower hermetically sealed can is reduced to 0.2~0.3MP, the pressure in hermetically sealed can is increased and be maintained at 0.4~0.6MP, pressure in lower hermetically sealed can, which rises, is maintained at 0.5~0.7MP, after 15~20 minutes, the pressure in hermetically sealed can and lower hermetically sealed can is gradually decrease to 0MP, take out casting；Another upper hermetically sealed can equipped with lost foam pattern cluster and sand is connected with lower hermetically sealed can, circulation casting；The flawless aluminum casting of high density is produced, the defects such as pin hole, stomata, shrinkage cavity and porosity, cold shut can be seldom produced.
Description
Technical field
The present invention relates to evaporative pattern aluminium alloy casting device, especially a kind of operating method of disappearance die-cast aluminum device.
Background technology
The aluminium alloy taken out from smelting furnace is cast in casting mold again, is the critical process during castings production,
Although the time of this process experience is very short, it is very fierce that aluminium alloy is moved in transmit process, and the oxide-film of liquid level is continuous
It is destroyed, and constantly produce new oxide-film, and constantly new oxide-film interlayer is involved in aluminium alloy, thus, very
Many waste products are also produced herein, in order to produce high-grade casting it is necessary to control casting rate, according to many studies have shown that,
Liquid cast aluminium alloy does not produce scattered, and the critical flow velocity of splashing is 0.5m/s.
The manufacture method of current aluminium alloy castings have gravity sand casting, gravity lost foam casting, low pressure sand casting and
Four kinds of compression casting, most widely used casting mode are traditional gravity castings, that is, the gravity using aluminium alloy in itself, will
It injects casting mold from the top of casting mold.It is most worthless casting mode, because aluminium liquid is under cast gate for aluminium alloy
When falling on bottom, flow velocity is far above 0.5m/s, and wandering liquid is disorderly inevitable with splashing.The gravity for disappearance die-cast aluminum
It is exactly that under gravity, high-speed and high-temperature liquid stream is poured in EPS or STMMA casting molds that casting, which also has an inevitable defect,
The waste gas hydrocarbon and useless carbon slag that EPS or STMMA fired vapours are produced can enter in aluminium liquid, are finally detained and arrive casting
It is interior, make the degradation of casting.
The thermal insulation coatings that aluminium alloy lost foam casting is applied using dry husky moulding Foam Pattern, because vaporization needs to absorb big
The heat of amount, so it is higher than the temperature of sand casting in furnace temperature and cast temperature, aluminium element is Active Metals in addition,
Air high temperature aluminium liquid easily with the hydrogen atom and oxygen atom in absorption air, cooling when again out of aluminium liquid separate out hydrogen atom and
Oxygen atom, gravity sand casting and gravity lost foam casting are all to solidify at ambient pressure, and gas evolution can be caused on surface, caused
Pin-hole phenomena occurs in the surface of casting, causes casting to be scrapped, also common pin cinder hole, gas cinder hole, cinder hole, stomata, slag inclusion,
The defects such as burning into sand, shrinkage cavity and porosity, cold shut, are all produced in casting and solidification.Although low pressure sand casting and compression casting
Preferable casting can be produced, but is only limitted to casting simple in construction, is but difficult to ensure its production for baroque casting
Quality.
In view of the foregoing, a kind of operating method of disappearance die-cast aluminum device is now developed.
The content of the invention
The invention aims to overcome deficiency of the prior art, there is provided a kind of operation side of disappearance die-cast aluminum device
Method, can manufacture and produce high-quality, high density, flawless aluminum casting.Low pressure bottom is cast：Poured using the size control of pressure
The speed casting liquid level of casting is steady, will not disperse to splash.Lost foam modeling：Surface smoothness is high, and allowance is small.Vacuum is born
Pressure：Effectively being discharged outside quickly the gas of generation, will not allow harmful residual to be mixed into aluminium liquid, it is ensured that material it is pure
Degree.Compression solidification：It is adapted to aluminium alloy grain refinement and solidification, can seldom produces pin hole, stomata, shrinkage cavity and porosity, cold shut etc. and lack
Fall into.
The present invention to achieve these goals, is adopted the following technical scheme that：A kind of operating method of disappearance die-cast aluminum device,
Aluminium liquid after melting after degasification removes the gred refinement and Metamorphism treatment loads in crucible, and crucible is put into the support in lower hermetically sealed can
On, L-shaped temperature probe is inserted into aluminium liquid, clip is nibbled to lower cover and lower hermetically sealed can fit sealing by tooth, woven hose is through close
The center and lower cover top center for sealing lower clapboard are stretched into aluminium liquid；EPS the or STMMA lost foam pattern clusters of coating have been gone up through drying room
After drying, it is put into hermetically sealed can, inserts dry sand, after bumper ram-jolt, clip is nibbled by tooth tight to Shang Gai and upper hermetically sealed can
Gu sealing, the upper connecting tube of upper hermetically sealed can and the lower connecting tube of lower hermetically sealed can are docked, hermetically sealed can and lower hermetically sealed can is linked as
One, the upper end of woven hose is stretched into hermetically sealed can through the bottom surface of upper hermetically sealed can, woven hose upper end and lost foam pattern cluster
Main running channel lower end docking, by controller to Resistant heating, the temperature of the temperature probe collection of L-shaped is transferred to temperature controller and shown
When temperature of aluminum liquid in crucible reaches 700~750 DEG C of predetermined cast temperature, start vavuum pump, by vacuum tube to upper hermetically sealed can
Inside vacuumize, observe the vacuum of vacuum meter, the vacuum in hermetically sealed can is maintained in the value range of setting, open simultaneously
Valve in the transverse pipe of lower pressure pipe, makes the pressure in the pressure rapid increase in lower hermetically sealed can, lower hermetically sealed can pass through lower cover
On pressure gauge show, when the pressure in lower hermetically sealed can reaches the value range of setting, high temperature aluminium liquid under pressure along transfusion
Pipe enters the vacuum in upper hermetically sealed can, regulation in hermetically sealed can, and the pressure in lower hermetically sealed can from bottom to top, makes aluminium liquid with 0.45
~0.5m/s flow velocity at the uniform velocity enters the main running channel of upper hermetically sealed can, travels further into EPS or STMMA lost foam pattern clusters, disappears
Mould model cluster is gasified by high temperature aluminium liquid, and gas is under vacuum through the gap between coating and sand by the aperture on vacuum tube
Into vacuum tube, it is transported to outside hermetically sealed can, aluminium liquid occupies the space after the gasification of lost foam pattern cluster, is completed to casting；
After casting, the valve closed on valve and vacuum tube in the transverse pipe of lower pressure pipe is opened under lower pressure pipe
When pressure gauge on valve on relief pipe, lower lid shows down that the pressure in hermetically sealed can is reduced to 0.2~0.3MP, subtract under closing
Valve in pressure pipe, while the valve in the transverse pipe of the valve and upper pressure pipe in the transverse pipe of lower pressure pipe is opened again, on
The pressure that pressure rising in hermetically sealed can is maintained in 0.4~0.6MP, lower hermetically sealed can, which rises, is maintained at 0.5~0.7MP, 15~
After 20 minutes, the casting in upper hermetically sealed can solidifies completely, the valve and the horizontal stroke of upper pressure pipe closed in the transverse pipe of lower pressure pipe
To the valve on pipe, the valve on the upper relief pipe of the valve and upper pressure pipe on the lower relief pipe of lower pressure pipe is opened, it is upper close
Pressure in sealed cans and lower hermetically sealed can is gradually reduced, and the pressure on pressure gauge and lower lid on upper lid is designated as after 0MP, in rotation
Tooth in the middle of hermetically sealed can and lower hermetically sealed can nibbles clip, removes and covered in hermetically sealed can, opening, take out casting, completes casting cycle；
Another upper hermetically sealed can equipped with lost foam pattern cluster and sand is connected with lower hermetically sealed can, poured by above-mentioned steps
Casting；
According to the volume calculations of crucible casting number of times, reach after casting number of times, remaining aluminium liquid is not enough to again in crucible
Cast, take out crucible and add aluminium liquid, moved in circles by above-mentioned steps；
After having cast, under cleaning during hermetically sealed can, the residue in lower hermetically sealed can is discharged by blast pipe and cleared up.
A kind of disappearance die-cast aluminum device, be by：Upper hermetically sealed can, vacuum tube, upper pressure pipe, upper relief pipe, evaporative pattern
Model cluster, main running channel, Shang Gai, upper connecting tube, lower hermetically sealed can, flame retardant coating, resistance wire, lower pressure pipe, lower relief pipe, crucible, every
Hot dividing plate, support, lower cover, lower connecting tube, sealing lower clapboard, blast pipe, temperature probe, tooth are nibbled clip, woven hose and constituted；It is upper close
It is uniformly distributed below aperture, vacuum tube and is stretched out outside upper hermetically sealed can on the evenly distributed vacuum tube of sealed cans inwall, vacuum tube, upper hermetically sealed can
Valve is set on outer vacuum tube, and vacuum pipe end is docked with vavuum pump；The vertical duct of the upper pressure pipe of L-shaped is located at upper hermetically sealed can
Interior, the transverse pipe of upper pressure pipe stretches out the horizontal pipe end setting valve for going up the upper pressure pipe outside hermetically sealed can, upper hermetically sealed can, upper close
It is vertically arranged in the middle part of the transverse pipe of upper pressure pipe outside sealed cans on relief pipe, upper relief pipe and valve is set, outside upper hermetically sealed can
The horizontal pipe end of upper pressure pipe is docked with pressurized tank；Lost foam pattern cluster is set in upper hermetically sealed can, evaporative pattern is made by sand
The main running channel of model cluster is located on the axial line of upper hermetically sealed can, sets and covers above upper hermetically sealed can, upper hermetically sealed can and upper lid pass through
Tooth is nibbled and pressure-reducing valve, pressure gauge, vacuum meter is just set on clip fit sealing, upper lid, and upper sealing pot bottom sets upper connecting tube；
Lower hermetically sealed can inner surface setting flame retardant coating, flame retardant coating inner surface is uniformly distributed below resistance wire, resistance wire under stretching
Hermetically sealed can is docked with controller；The vertical duct of the lower pressure pipe of L-shaped is arranged in flame retardant coating, and the vertical duct upper end of lower pressure pipe is stretched
Go out flame retardant coating, the transverse pipe of lower pressure pipe passes through the transverse pipe of the lower pressure pipe outside the lower hermetically sealed can of flame retardant coating stretching, lower hermetically sealed can
End to set be vertically arranged in the middle part of the transverse pipe of the lower pressure pipe outside valve, lower hermetically sealed can and set on lower relief pipe, lower relief pipe
The horizontal pipe end of lower pressure pipe outside valve, lower hermetically sealed can is docked with pressurized tank；Crucible is arranged in the cavity of lower hermetically sealed can,
Set between crucible bottom surface and flame retardant coating bottom surface and heat-insulated dividing plate, the vertical section of the temperature probe of L-shaped are set above support, crucible
Insert in crucible, level is stretched out lower hermetically sealed can to part and is connected with temperature controller；Lower cover is set above lower hermetically sealed can, lower hermetically sealed can and
Lower cover is nibbled by tooth sets pressure-reducing valve and pressure gauge above clip fit sealing, lower cover, lower tops set lower connecting tube, upper company
Nibbled between adapter and lower connecting tube by tooth and set in clip fit sealing, lower connecting tube sealing lower clapboard, woven hose is located at close
The center of lower clapboard is sealed, woven hose upper end is stretched into hermetically sealed can through the bottom surface of upper hermetically sealed can, woven hose upper end end face and institute
State the contact of main running channel lower end surface, woven hose lower end through heat-insulated dividing plate center insertion crucible inner bottom part, upper hermetically sealed can, on
Lid, the axial line of upper connecting tube, lower hermetically sealed can, lower cover, lower connecting tube are overlapped, and woven hose is located on the axial line, blast pipe
Bottom surface and flame retardant coating through lower hermetically sealed can are stretched into the cavity of lower hermetically sealed can.
Connecting line of the upper pressure pipe vertical pressure pipe upper end end face higher than upper hermetically sealed can and upper lid in the upper hermetically sealed can,
Lower pressure pipe vertical pressure pipe upper end end face in lower hermetically sealed can is higher than lower hermetically sealed can and the connecting line of lower cover.
The beneficial effects of the invention are as follows：Mainly solving baroque casting can not ensure that the technology of its production quality is difficult
Topic, can manufacture and produce high-quality, high density, flawless aluminum casting.Low pressure bottom is cast：Poured using the size control of pressure
The speed casting liquid level of casting is steady, will not disperse to splash.Lost foam modeling：Surface smoothness is high, and allowance is small.Vacuum is born
Pressure：Effectively being discharged outside quickly the gas of generation, will not allow harmful residual to be mixed into aluminium liquid, it is ensured that material it is pure
Degree.Compression solidification：It is adapted to aluminium alloy grain refinement and solidification, can seldom produces pin hole, stomata, shrinkage cavity and porosity, cold shut etc. and lack
Fall into.The present invention brings immeasurable benefit for middle-size and small-size foundry enterprise, while being filled with the sky of China's evaporative pattern cast aluminium machinery
In vain, laid the foundation for the manufacture high-quality complicated aluminum casting of high-quality, be adapted to popularity application.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is general assembly structural representation；
In Fig. 1：Upper hermetically sealed can 1, vacuum tube 11, upper pressure pipe 12, upper relief pipe 121, lost foam pattern cluster 13, main running channel
131st, upper lid 14, upper connecting tube 15, lower hermetically sealed can 2, flame retardant coating 21, resistance wire 22, lower pressure pipe 23, lower relief pipe 231, crucible
24th, heat-insulated dividing plate 241, support 25, lower cover 26, lower connecting tube 27, sealing lower clapboard 271, blast pipe 28, temperature probe 29, tooth
Nibble clip 3, woven hose 4.
Embodiment
The present invention is described in further detail with embodiment with reference to embodiment：
Embodiment 1
Aluminium liquid after melting after degasification removes the gred refinement and Metamorphism treatment loads in crucible 24, and crucible 24 is put into lower sealing
On support 25 in tank 2, L-shaped temperature probe 29 is inserted into aluminium liquid, clip 3 is nibbled by tooth tight to lower cover 26 and lower hermetically sealed can 2
Gu sealing, woven hose 4 is stretched into aluminium liquid through the center of sealing lower clapboard 271 and the top center of lower cover 26；The EPS of coating is gone up
Or after STMMA lost foam patterns cluster 13 is dried through drying room, be put into hermetically sealed can 1, insert dry sand, after bumper ram-jolt, lead to
Cross tooth and nibble the upper lid 14 of 3 pairs of clip and the upper fit sealing of hermetically sealed can 1, by under the upper connecting tube 15 of upper hermetically sealed can 1 and lower hermetically sealed can 2
Connecting tube 27 is docked, and hermetically sealed can 1 and lower hermetically sealed can 2 is connected as a single entity, and the upper end of woven hose 4 passes through the bottom surface of upper hermetically sealed can 1
Stretch into hermetically sealed can 1, the upper end of woven hose 4 is docked with the main running channel lower end of lost foam pattern cluster 13, by controller to resistance
Silk 22 is heated, the temperature that the temperature probe 29 of L-shaped is gathered be transferred to the temperature of aluminum liquid that temperature controller shows in crucible 24 reach it is predetermined
During 700~750 DEG C of cast temperature, start vavuum pump, by being vacuumized in 11 pairs of upper hermetically sealed cans 1 of vacuum tube, observation vacuum meter
Vacuum, makes the vacuum in hermetically sealed can 1 be maintained in the value range of setting, while opening in the transverse pipe of lower pressure pipe 23
Valve, the pressure in the pressure rapid increase in lower hermetically sealed can 2, lower hermetically sealed can 2 is shown by the pressure gauge on lower cover 26,
When pressure in lower hermetically sealed can 2 reaches the value range of setting, high temperature aluminium liquid enters from bottom to top along woven hose 4 under pressure
Pressure in vacuum in upper hermetically sealed can 1, regulation in hermetically sealed can 1, and lower hermetically sealed can 2, makes aluminium liquid with 0.45~0.5m/s's
Flow velocity at the uniform velocity enters the main running channel 131 of upper hermetically sealed can 1, travels further into EPS or STMMA lost foam patterns cluster 13, evaporative pattern mould
Type cluster 13 is gasified by high temperature aluminium liquid, and gas is under vacuum through the gap between coating and sand by the aperture on vacuum tube 11
Into vacuum tube 11, it is transported to outside hermetically sealed can 1, aluminium liquid occupies the space after lost foam pattern cluster 13 gasifies, to having cast
Into；
After casting, the valve closed on valve and vacuum tube 11 in the transverse pipe of lower pressure pipe 23 opens lower pressure pipe
Pressure gauge on valve on 23 lower relief pipe 231, lower cover 26 shows down that the pressure in hermetically sealed can 2 is reduced to 0.2~0.3MP
When, the valve closed on lower relief pipe 231, while opening valve in the transverse pipe of lower pressure pipe 23 and upper pressure pipe 12 again
Pressure in valve in transverse pipe, upper hermetically sealed can 1 rises the pressure being maintained in 0.4~0.6MP, lower hermetically sealed can 2 and rises guarantor
Hold in 0.5~0.7MP, after 15~20 minutes, the casting in upper hermetically sealed can 1 solidifies completely, close the transverse pipe of lower pressure pipe 23
On valve and upper pressure pipe 12 transverse pipe on valve, open valve on the lower relief pipe 231 of lower pressure pipe 23 and upper
Pressure in valve on the upper relief pipe 121 of pressure pipe 12, upper hermetically sealed can 1 and lower hermetically sealed can 2 is gradually reduced, on upper lid 14
Pressure on pressure gauge and lower cover 26 is designated as after 0MP, and hermetically sealed can 1 and the tooth of the centre of lower hermetically sealed can 2 nibble clip 3 in rotation, move
Lid 14 in hermetically sealed can 1, opening is removed, casting is taken out, casting cycle is completed；
Another upper hermetically sealed can 1 equipped with lost foam pattern cluster 13 and sand is connected with lower hermetically sealed can 2, entered by above-mentioned steps
Row casting；
According to the volume calculations of crucible 24 casting number of times, reach after casting number of times, remaining aluminium liquid is not enough in crucible 24
Cast again, take out crucible 24 and add aluminium liquid, moved in circles by above-mentioned steps；
After having cast, under cleaning during hermetically sealed can 2, the residue passed through in 28 pairs of lower hermetically sealed cans 2 of blast pipe discharges cleaning.
Embodiment 2
A kind of disappearance die-cast aluminum device, be by：Upper hermetically sealed can 1, vacuum tube 11, upper pressure pipe 12, upper relief pipe
121st, lost foam pattern cluster 13, main running channel 131, upper lid 14, upper connecting tube 15, lower hermetically sealed can 2, flame retardant coating 21, resistance wire 22, under
Pressure pipe 23, lower relief pipe 231, crucible 24, heat-insulated dividing plate 241, support 25, lower cover 26, lower connecting tube 27, sealing lower clapboard
271st, blast pipe 28, temperature probe 29, tooth are nibbled clip 3, woven hose 4 and constituted；The upper evenly distributed vacuum tube 11 of the inwall of hermetically sealed can 1,
Aperture is uniformly distributed on vacuum tube 11, the lower section of vacuum tube 11 is stretched out outside upper hermetically sealed can 1, set on the vacuum tube 11 outside upper hermetically sealed can 1
Valve is put, the end of vacuum tube 11 is docked with vavuum pump；The vertical duct of the upper pressure pipe 12 of L-shaped is located in upper hermetically sealed can 1, upper pressure
The horizontal pipe end for the upper pressure pipe 12 that the transverse pipe of pipe 12 is stretched out outside upper hermetically sealed can 1, upper hermetically sealed can 1 sets valve, upper sealing
It is vertically arranged in the middle part of the transverse pipe of upper pressure pipe 12 outside tank 1 on relief pipe 121, upper relief pipe 121 and valve, upper sealing is set
The horizontal pipe end of upper pressure pipe 12 outside tank 1 is docked with pressurized tank；Lost foam pattern cluster 13 is set in upper hermetically sealed can 1, passed through
Sand makes the main running channel 131 of lost foam pattern cluster 13 be located on the axial line of upper hermetically sealed can 1, and the upper top of hermetically sealed can 1, which is set, to be covered
14, upper hermetically sealed can 1 and upper lid 14 nibble the fit sealing of clip 3 by tooth, and the upper top of lid 14 sets pressure-reducing valve, pressure gauge, vacuum meter,
The upper bottom of hermetically sealed can 1 sets upper connecting tube 15；
The lower inner surface setting flame retardant coating 21 of hermetically sealed can 2, the inner surface of flame retardant coating 21 is uniformly distributed under resistance wire 22, resistance wire 22
Side stretches out lower hermetically sealed can 2 and docked with controller；The vertical duct of the lower pressure pipe 23 of L-shaped is arranged in flame retardant coating 21, lower pressure pipe
Flame retardant coating 21 is stretched out in 23 vertical duct upper end, and the transverse pipe of lower pressure pipe 23 stretches out lower hermetically sealed can 2, lower sealing through flame retardant coating 21
The horizontal pipe end of lower pressure pipe 23 outside tank 2 sets vertical in the middle part of the transverse pipe of the lower pressure pipe 23 outside valve, lower hermetically sealed can 2
The horizontal pipe end and pressure of the lower pressure pipe 23 set on lower relief pipe 231, lower relief pipe 231 outside valve, lower hermetically sealed can 2 are set
Power tank is docked；Crucible 24 is arranged in the cavity of lower hermetically sealed can 2, and support is set between the bottom surface of crucible 24 and the bottom surface of flame retardant coating 21
25, the top of crucible 24 is set in heat-insulated dividing plate 241, the vertical section insertion crucible 24 of the temperature probe 29 of L-shaped, and level is to part
Lower hermetically sealed can 2 is stretched out to be connected with temperature controller；The lower top of hermetically sealed can 2 sets lower cover 26, and lower hermetically sealed can 2 and lower cover 26 nibble card by tooth
3 fit sealings are bound round, the top of lower cover 26 sets pressure-reducing valve and pressure gauge, and the top of lower cover 26 sets lower connecting tube 27, upper connecting tube 15
Nibbled between lower connecting tube 27 by tooth and set in the fit sealing of clip 3, lower connecting tube 27 sealing lower clapboard 271, woven hose 4
In the center of sealing lower clapboard 271, the upper end of woven hose 4 is stretched into hermetically sealed can 1 through the bottom surface of upper hermetically sealed can 1, on woven hose 4
End end face is contacted with the main lower end surface of running channel 131, center insertion crucible 24 of the lower end of woven hose 4 through heat-insulated dividing plate 241
Inner bottom part, upper hermetically sealed can 1, upper lid 14, upper connecting tube 15, lower hermetically sealed can 2, lower cover 26, the axial line of lower connecting tube 27 are overlapped, defeated
Liquid pipe 4 is located on the axial line, and blast pipe 28 stretches into the sky of lower hermetically sealed can 2 through the bottom surface of lower hermetically sealed can 2 and flame retardant coating 21
In chamber.
Embodiment 3
The vertical pressure pipe upper end end face of upper pressure pipe 12 in the upper hermetically sealed can 1 is higher than upper hermetically sealed can 1 and upper lid 14
Connection of the vertical pressure pipe upper end end face of lower pressure pipe 23 higher than lower hermetically sealed can 2 and lower cover 26 in connecting line, lower hermetically sealed can 2
Line.
Claims (3)
1. a kind of operating method of disappearance die-cast aluminum device, it is characterised in that：Remove the gred and refine and rotten place by degasification after melting
Aluminium liquid after reason loads in crucible (24), and crucible (24) is put on the support (25) in lower hermetically sealed can (2), and L is inserted into aluminium liquid
Shape temperature probe (29), nibbles clip (3) to lower cover (26) and lower hermetically sealed can (2) fit sealing, woven hose (4) is through close by tooth
The center of envelope lower clapboard (271) and lower cover (26) top center are stretched into aluminium liquid；EPS the or STMMA evaporative pattern moulds of coating are gone up
After type cluster (13) is dried through drying room, it is put into hermetically sealed can (1), inserts dry sand, after bumper ram-jolt, clip is nibbled by tooth
(3) to upper lid (14) and upper hermetically sealed can (1) fit sealing, by the upper connecting tube (15) of upper hermetically sealed can (1) and lower hermetically sealed can (2)
Lower connecting tube (27) docking, makes hermetically sealed can (1) and lower hermetically sealed can (2) be connected as a single entity, and the upper end of woven hose (4) passes through upper sealing
The bottom surface of tank (1) is stretched into hermetically sealed can (1), and woven hose (4) upper end is docked with the main running channel lower end of lost foam pattern cluster (13),
Resistance wire (22) is heated by controller, the temperature of temperature probe (29) collection of L-shaped is transferred to temperature controller and shows crucible
(24) when the temperature of aluminum liquid in reaches 700~750 DEG C of predetermined cast temperature, vavuum pump is started, by vacuum tube (11) to upper close
Vacuumized in sealed cans (1), observe the vacuum of vacuum meter, the vacuum in hermetically sealed can (1) is maintained at the value range of setting
It is interior, while opening the valve in the transverse pipe of lower pressure pipe (23), make the pressure rapid increase in lower hermetically sealed can (2), lower sealing
Pressure in tank (2) shows that the pressure in lower hermetically sealed can (2) reaches the value range of setting by the pressure gauge on lower cover (26)
When, high temperature aluminium liquid enters in upper hermetically sealed can (1), regulation in hermetically sealed can (1) from bottom to top along woven hose (4) under pressure
Pressure in vacuum, and lower hermetically sealed can (2), makes aluminium liquid with 0.45~0.5m/s flow velocity at the uniform velocity into upper hermetically sealed can (1)
Main running channel (131), travels further into EPS or STMMA lost foam patterns cluster (13), lost foam pattern cluster (13) is by high temperature aluminium liquid gas
Change, gas enters vacuum tube (11) through the gap between coating and sand by the aperture on vacuum tube (11) under vacuum,
It is transported to hermetically sealed can (1) outside, aluminium liquid occupies the space after lost foam pattern cluster (13) gasification, is completed to casting；
After casting, the valve closed on valve and vacuum tube (11) in the transverse pipe of lower pressure pipe (23) opens lower pressure pipe
(23) pressure gauge on the valve on lower relief pipe (231), lower cover (26) shows down that the pressure in hermetically sealed can (2) is reduced to
During 0.2~0.3MP, the valve closed on lower relief pipe (231), while opening the valve in the transverse pipe of lower pressure pipe (23) again
With the valve in the transverse pipe of upper pressure pipe (12), the pressure in upper hermetically sealed can (1), which rises, is maintained at 0.4~0.6MP, lower sealing
Pressure in tank (2), which rises, is maintained at 0.5~0.7MP, and after 15~20 minutes, the casting in upper hermetically sealed can (1) solidifies completely, closes
The valve closed in the transverse pipe of the valve in the transverse pipe of lower pressure pipe (23) and upper pressure pipe (12), opens lower pressure pipe (23)
Lower relief pipe (231) on valve and upper pressure pipe (12) upper relief pipe (121) on valve, upper hermetically sealed can (1) and under
Pressure in hermetically sealed can (2) is gradually reduced, and the pressure on pressure gauge and lower cover (26) on upper lid (14) is designated as after 0MP, is revolved
Turn the tooth in the middle of upper hermetically sealed can (1) and lower hermetically sealed can (2) and nibble clip (3), remove lid (14) in hermetically sealed can (1), opening, take out
Casting, completes casting cycle；
Another upper hermetically sealed can (1) equipped with lost foam pattern cluster (13) and sand is connected with lower hermetically sealed can (2), by above-mentioned steps
Cast；
According to the volume calculations of crucible (24) casting number of times, reach after casting number of times, remaining aluminium liquid is not enough in crucible (24)
Cast again, take out crucible (24) and add aluminium liquid, moved in circles by above-mentioned steps；
After having cast, under cleaning during hermetically sealed can (2), the residue in lower hermetically sealed can (2) is discharged by blast pipe (28) and cleared up.
2. a kind of operating method of disappearance die-cast aluminum device according to claim 1, it is characterised in that：A kind of disappearance
Die-cast aluminum device, be by：Upper hermetically sealed can (1), vacuum tube (11), upper pressure pipe (12), upper relief pipe (121), lost foam pattern
Cluster (13), main running channel (131), it is upper lid (14), upper connecting tube (15), lower hermetically sealed can (2), flame retardant coating (21), resistance wire (22), under
Pressure pipe (23), lower relief pipe (231), crucible (24), heat-insulated dividing plate (241), support (25), lower cover (26), lower connecting tube
(27), sealing lower clapboard (271), blast pipe (28), temperature probe (29), tooth are nibbled clip (3), woven hose (4) and constituted；Upper sealing
It is uniformly distributed below aperture, vacuum tube (11) to stretch out on the evenly distributed vacuum tube of tank (1) inwall (11), vacuum tube (11) and seals
Tank (1) outside, sets valve on the vacuum tube (11) of upper hermetically sealed can (1) outside, vacuum tube (11) end is docked with vavuum pump；L-shaped
The vertical duct of upper pressure pipe (12) is located in upper hermetically sealed can (1), and the transverse pipe of upper pressure pipe (12) stretches out upper hermetically sealed can (1), on
The horizontal pipe end of the upper pressure pipe (12) of hermetically sealed can (1) outside sets valve, the horizontal stroke of the upper pressure pipe (12) of upper hermetically sealed can (1) outside
It is vertically arranged in the middle part of to pipe on upper relief pipe (121), upper relief pipe (121) and valve is set, the upper pressure pipe of upper hermetically sealed can (1) outside
(12) horizontal pipe end is docked with pressurized tank；Lost foam pattern cluster (13) is set in upper hermetically sealed can (1), disappearance is made by sand
The main running channel (131) of mould model cluster (13) is located on the axial line of upper hermetically sealed can (1), sets and covers above upper hermetically sealed can (1)
(14), upper hermetically sealed can (1) and upper lid (14) is nibbled by tooth set pressure-reducing valve, pressure above clip (3) fit sealing, upper lid (14)
Table, vacuum meter, upper hermetically sealed can (1) bottom set upper connecting tube (15)；
Lower hermetically sealed can (2) inner surface setting flame retardant coating (21), flame retardant coating (21) inner surface is uniformly distributed resistance wire (22), resistance wire
(22) lower section is stretched out lower hermetically sealed can (2) and docked with controller；The vertical duct of the lower pressure pipe (23) of L-shaped is arranged at flame retardant coating (21)
Interior, flame retardant coating (21) is stretched out in the vertical duct upper end of lower pressure pipe (23), and the transverse pipe of lower pressure pipe (23) passes through flame retardant coating (21)
Lower hermetically sealed can (2) is stretched out, the horizontal pipe end of the lower pressure pipe (23) of lower hermetically sealed can (2) outside sets valve, and lower hermetically sealed can (2) is outside
Lower pressure pipe (23) transverse pipe in the middle part of be vertically arranged on lower relief pipe (231), lower relief pipe (231) valve be set, under it is close
The horizontal pipe end of the lower pressure pipe (23) of sealed cans (2) outside is docked with pressurized tank；Crucible (24) is arranged at the sky of lower hermetically sealed can (2)
Set in chamber, between crucible (24) bottom surface and flame retardant coating (21) bottom surface and heat-insulated dividing plate is set above support (25), crucible (24)
(241), in the vertical section insertion crucible (24) of the temperature probe (29) of L-shaped, level stretches out lower hermetically sealed can (2) and temperature to part
Control device connection；Lower cover (26) is set above lower hermetically sealed can (2), and lower hermetically sealed can (2) and lower cover (26) are nibbled clip (3) by tooth and fastened
Set above sealing, lower cover (26) and set at the top of pressure-reducing valve and pressure gauge, lower cover (26) lower connecting tube (27), upper connecting tube (15)
Nibbled between lower connecting tube (27) by tooth and sealing lower clapboard (271) be set in clip (3) fit sealing, lower connecting tube (27),
Woven hose (4) is located at the center of sealing lower clapboard (271), and woven hose (4) upper end is stretched into close through the bottom surface of upper hermetically sealed can (1)
In sealed cans (1), woven hose (4) upper end end face is contacted with main running channel (131) lower end surface, woven hose (4) lower end through every
Center insertion crucible (24) inner bottom part of hot dividing plate (241), upper hermetically sealed can (1), upper lid (14), upper connecting tube (15), lower sealing
Tank (2), lower cover (26), the axial line of lower connecting tube (27) are overlapped, and woven hose (4) is located on the axial line, blast pipe (28)
Bottom surface and flame retardant coating (21) through lower hermetically sealed can (2) are stretched into the cavity of lower hermetically sealed can (2).
3. a kind of operating method of disappearance die-cast aluminum device according to claim 2, it is characterised in that：The upper hermetically sealed can
(1) upper pressure pipe (12) vertical pressure pipe upper end end face in is higher than upper hermetically sealed can (1) and the connecting line of upper lid (14), lower sealing
Connecting line of lower pressure pipe (23) vertical pressure pipe upper end end face higher than lower hermetically sealed can (2) and lower cover (26) in tank (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710378049.4A CN106944605A (en) | 2017-05-24 | 2017-05-24 | A kind of operating method of disappearance die-cast aluminum device |
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| CN201710378049.4A CN106944605A (en) | 2017-05-24 | 2017-05-24 | A kind of operating method of disappearance die-cast aluminum device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108941513A (en) * | 2018-09-26 | 2018-12-07 | 成都艾特安科技有限公司 | Metallic pressure conveys shell moulded casting method |
| CN114147178A (en) * | 2021-12-15 | 2022-03-08 | 广州市荣泽模具有限公司 | Aluminum alloy lost foam casting method |
| CN114346212A (en) * | 2021-12-31 | 2022-04-15 | 中核四0四有限公司 | Pressure-regulating casting furnace and casting method for casting uniform segregation-free bar |
| CN115384958A (en) * | 2022-07-18 | 2022-11-25 | 镇江高鹏药业有限公司 | Constant-pressure sealing preparation for preparing industrial salicylic acid and constant-pressure method thereof |
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| CN114346212A (en) * | 2021-12-31 | 2022-04-15 | 中核四0四有限公司 | Pressure-regulating casting furnace and casting method for casting uniform segregation-free bar |
| CN115384958A (en) * | 2022-07-18 | 2022-11-25 | 镇江高鹏药业有限公司 | Constant-pressure sealing preparation for preparing industrial salicylic acid and constant-pressure method thereof |
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Application publication date: 20170714 |