CN104668521A - Low-pressure casting bath unit - Google Patents
Low-pressure casting bath unit Download PDFInfo
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- CN104668521A CN104668521A CN201510052208.2A CN201510052208A CN104668521A CN 104668521 A CN104668521 A CN 104668521A CN 201510052208 A CN201510052208 A CN 201510052208A CN 104668521 A CN104668521 A CN 104668521A
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- housing
- molten bath
- bath device
- pressure casting
- low pressure
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- 238000005266 casting Methods 0.000 title claims abstract description 96
- 238000010438 heat treatment Methods 0.000 claims abstract description 55
- 239000012774 insulation material Substances 0.000 claims abstract description 15
- 230000002787 reinforcement Effects 0.000 claims description 42
- 238000007789 sealing Methods 0.000 claims description 17
- 239000010425 asbestos Substances 0.000 claims description 9
- 229910052895 riebeckite Inorganic materials 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000004512 die casting Methods 0.000 claims description 7
- 229910052571 earthenware Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 51
- 239000002184 metal Substances 0.000 abstract description 51
- 229910052782 aluminium Inorganic materials 0.000 abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 12
- 230000003014 reinforcing effect Effects 0.000 abstract 4
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 12
- 239000004411 aluminium Substances 0.000 description 11
- 238000009413 insulation Methods 0.000 description 10
- 230000000630 rising effect Effects 0.000 description 8
- 244000035744 Hura crepitans Species 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 239000000395 magnesium oxide Substances 0.000 description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000003031 feeding effect Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention relates to a low-pressure casting bath unit comprising a housing, a top plate, a base and a heating rod. The inner wall of the housing is coated with insulation material. The housing is provided with a top opening and a bottom opening. The top opening of the housing is provided with a projecting edge; the top plate covers the top opening of the housing and is fixedly connected with the projecting edge; the top plate is provided with a sprue; the bottom of the housing is fixedly connected with the base; the housing is composed of two side plates facing each other and two arc end plates facing each other; the outer wall of each side plate is provided with reinforcing ribs arranged from top down; the tops of the reinforcing bars are connected with the projecting edge; the bottoms of the reinforcing bars are connected with the base; the heating rod is inserted onto the reinforcing ribs; the base is provided with an opening communicated with the bottom opening of the housing. The low-pressure casting bath unit is capable of thermally insulating and heating molten aluminum, sufficient buffer space is provided for filling of molten metal, compression efficiency of a casting is improved, a transverse gate for molding is omitted, and the molten metal can be recovered in time.
Description
Technical field
The present invention relates to a kind of low-pressure die casting plant, especially a kind of low-pressure die casting plant being applicable to large aluminum alloy foundry goods and using.
Background technology
In prior art, aluminum alloy low-pressure casting equipment is that stalk is directly connected with casting sand box or metal mold, and aluminium liquid is entered the cross gate in casting mold by stalk, then the ingate in casting mold enters in foundry goods die cavity.Aluminium liquid from holding furnace through stalk to cast-internal, temperature declines very fast, directly can affect cavity filling energy and the feeding effect of molten metal, thus affect casting quality.If casting mold is sand mold, larger mold filling pressure meeting scour cast, likely makes casting mold drop, causes the defects such as the burning into sand of foundry goods.In low-pressure casting system, cross gate and ingate are equivalent to rising head in casting solidification process, under the effect of dwell pressure, carry out feeding to foundry goods, but along with the carrying out solidified, the cooling rate of cross gate and ingate is too fast, can result in the decline of feeding effect.Further, prior art must offer cross gate in the metal mold of each foundry goods or sandbox, and after casting complete, cross gate cannot reclaim immediately, and the yield rate of foundry goods is not high.
Chinese patent literature CN101367126(application number is 200710146778.3) disclose a kind of new casting method and casting die thereof, method is immersed in molten metal by casting die to pour into a mould, lift and the upper and lower pressue device pressurization of casting die weight-driven are hung in utilization, molten metal in die cavity in required pressure lower charging type, feeding, solidify, crystallization, again casting die is immersed in the water Quench, improves foundry goods mechanical performance.The method is improved existing low-pressure casting method, but operation excess enthalpy is loaded down with trivial details, and casting mold mould directly immerses molten metal, and very difficult guarantee can not pollute molten metal.
Chinese patent literature CN102179498(application number is 201110167675.1) disclose one stalk heat insulation energy-saving device on air injection machine, adopt Al
2o
3be the insulation ring that main refractory material is made, its internal diameter is consistent with stalk internal diameter, wall thickness 10mm, and this insulation ring is placed on above the flange of stalk, is the molten metal passage connecting stalk and metal mold down gate.During low pressure casting, aluminium liquid rises along stalk under the effect of the pressure, metal mold is entered through refractory material insulation ring of the present invention, due to fire proofed wood feed ring good heat preservation performance, during low pressure casting in pressure maintaining period, in fire-resistant ring, aluminium liquid can not solidify, and the aluminium liquid after release in stalk can be back in crucible.But only utilize insulation material to be incubated stalk, the molten metal in stalk still exists the possibility of solidifying, cannot control well when operating.And to utilize electric heater unit to be incubated stalk be the method that those skilled in the art comparatively commonly uses, even if but stalk is incubated effectively, still there is mold filling pressure instability in it, the cooling rate of cross gate and ingate is too fast, and cross gate such as cannot to reclaim immediately at the problems.
Immediate Chinese patent literature CN102962431(application number is 201210443437.3) disclose a kind of aluminum alloy low-pressure casting and rise liquid incubator, be made up of casing and case lid, the inwall rising liquid case is provided with calcium silicate board with microporous heat-insulation layer, between this heat-insulation layer and the inwall rising liquid case, be all filled with asbestos.
This casing rising liquid case is funnel-form, be equivalent to the sectional area adding stalk and casting mold junction, because its surface area is larger, rapid heat dissipation, thermal capacity is little, even if inwall is provided with heat-insulation layer, its actual heat insulation effect is not good yet, especially the casing rising liquid case is funnel-form, and part radiating rate is more up faster, is more unfavorable for the insulation of molten metal.This rises liquid case when winter conditions temperature is lower, and after aluminium liquid enters stalk, the most easily freezing with the stalk place molten metal rising liquid case junction, freeze to affect the casting of foundry goods, even if do not freeze, molten metal is through incubator, and temperature still can reduce a lot.
In addition, this rise liquid case due to the side of casing be inclined-plane, so very large pressure cannot be born at all, inapplicable for heavy castings.Meanwhile, ramp structure is unfavorable for the backflow of the molten metal of the cabinet wall after release, and part metals liquid will inevitably be caused to solidify at cabinet wall and affect the quality of foundry goods when once casting.
In addition, owing to not better being incubated means, temperature when making the molten metal be incubated enter mold cavity and the temperature difference of cavity temperature remain within 5 DEG C, and obvious molten metal can not rise stay longer in liquid case, thus cannot obtain stable mold filling pressure.
Therefore, the device disclosed in Chinese patent literature CN102962431 is only applicable to the production of small-sized foundry goods, and for heavy castings, does not in fact have the effect improving feeding efficiency.
Summary of the invention
The object of this invention is to provide one and can carry out heating and heat preservation to molten metal, for liquid metal filling provides enough large cushion space, mold filling pressure is stablized, and carries out effective feeding to foundry goods, save the cross gate of casting mold, the low pressure casting molten bath device that molten metal can reclaim immediately.
The technical scheme realizing the object of the invention is a kind of low pressure casting molten bath device, comprise housing and top board, the coated inner wall of housing has insulation material, housing has open top and bottom opening, the top open part of housing is provided with flange, and described top board is covered on the top open part of described housing and is fixedly connected with described flange; Described top board offers gate orifice, and described gate orifice can be communicated with the ingate of casting mold die cavity and the inner chamber of housing;
Also comprise base and heating rod;
The bottom of described housing is fixedly connected with base;
The open top of described housing is greater than bottom opening, and the inwall of housing has the curved inner wall face of inner vertical walls face and inward collapsible, and the arc-shaped end plate portion that described housing is oppositely arranged by two pieces of side plates be oppositely arranged and two pieces is formed;
The outer wall of described side plate is provided with the reinforcement of from up to down direction setting; The top of described reinforcement is connected with flange, and the bottom of described reinforcement is connected with base;
Described heating rod is plugged on described reinforcement;
Described base has the opening communicated with the bottom opening of housing, the coated inner wall of opening has insulation material.
When above-mentioned end plate extends to bottom from top, relatively draw in and be convexly curved; Described side plate has from top to the vertical section of downward-extension and the curved bend tune of inward collapsible, and described inner vertical walls face is positioned at vertical section, and described curved inner wall face is positioned at curved bend tune; The bottom opening place of described housing is provided with base plate, and the lower surface of described base plate is attached on base.The epimere of side plate vertically arranges and hypomere draws in relatively, adds the support of reinforcement, is conducive to bearing larger pressure, is conducive to the backflow of molten metal.
Above-mentioned heating rod comprises metal shell, is located at the heating resistive element in described metal shell and is filled in the crystal magnesium oxide powder between described metal shell and heating resistive element.The metal shell of heating rod is stainless steel, crystal magnesium oxide powder has good heat resistance, thermal conductivity and insulating properties, when being energized, heating resistive element, rapidly heat is passed by crystal magnesium oxide powder and stainless steel casing, resistive element and metal are kept apart by crystal magnesium oxide powder simultaneously, play the effect of insulation, prevent the too fast oxidation consume of heating resistive element.This device does not adopt heating rod good insulating compared with other electric calorifie installations of employing, fragile, safe and reliable, and can arrange by root, according to molten metal number determine quantity and the general power of heating rod, maintenance maintenance is convenient.
Above-mentioned heating rod is parallel to side plate and arranges, and heating can be made more even.
The outer wall of above-mentioned housing and the outer surface of heating rod are all coated with asbestos, are filled with asbestos between described housing and heating rod.Heat is delivered in molten bath by heat radiation and heat transfer by heating rod; the outer wall of housing and the outer surface of heating rod are coated with asbestos, fill asbestos between housing and heating rod, are conducive to reducing scattering and disappearing of heat; can heating rod be protected simultaneously, reduce the loss of heating rod.
In order to improve the non-deformability of end plate, a kind of preferred technical scheme is: the outer wall of above-mentioned each end plate is provided with the reinforcement from up to down arranged.
Above-mentioned low pressure casting molten bath device also comprises the temperature sensor for monitoring molten bath device internal temperature.
Above-mentioned low pressure casting molten bath device also comprises the temperature sensor of the internal temperature for monitoring molten bath device, and described temperature sensor is located in housing.
Above-mentioned low pressure casting molten bath device also comprises the temperature sensor for monitoring molten bath device internal temperature, and described temperature sensor is located in housing, and its thermometric end stretches out the inner wall surface of housing.Temperature sensor can be monitored the temperature in molten bath in real time, when the temperature in molten bath reaches pouring temperature, can pour into a mould.
Said temperature sensor is the thermocouple that outer cover has earthenware.
In order to improve housing non-deformability at high temperature, a kind of preferred technical scheme is: above-mentioned reinforcement is arranged perpendicular to the outer wall of housing.
For the ease of the dismounting of heating rod, a kind of preferred technical scheme is: above-mentioned reinforcement is provided with through hole, and described heating rod is plugged in described through hole, thus level frame is located on described reinforcement.
For the ease of the dismounting of heating rod, another kind of preferred technical scheme is: above-mentioned reinforcement is provided with gap, and described heating rod is plugged in described gap, thus level frame is located on described reinforcement.
Low pressure casting molten bath device according to claim 1, is characterized in that: described heating rod (5) comprises metal shell, is located at the heating resistive element in described metal shell and is filled in the crystal magnesium oxide powder between described metal shell and heating resistive element.
Above-mentioned low pressure casting molten bath device also comprises connecting plate and stalk; Described connecting plate is positioned at the below of base, and is fixedly connected with base is removable; Described connecting plate offers spacing hole; Described stalk through spacing hole, and is fixedly connected with described connecting plate by flange, and the opening of described base communicates with described stalk.
Above-mentioned top board is fixedly connected with described flange by bolt, and described base is fixedly connected with described connecting plate by bolt, and described connecting plate is fixedly connected with the holding furnace cover plate of low-pressure die casting plant by bolt.
Be provided with sealing strip between above-mentioned flange and top board, between described connecting plate and base, be provided with sealing strip, between described connecting plate and holding furnace cover plate, be provided with sealing strip.Sealing strip is mud bar, simple to operate, with low cost, good sealing effect.
The present invention has positive effect:
(1) the housing both sides of low pressure casting molten bath device of the present invention are provided with heating rod, the inner chamber that top board, housing and base surround defines the molten bath with heating and heat preservation effect, can effectively be incubated molten metal, when making the molten metal in molten bath arrive the ingate of interior casting mold, temperature can not obviously decline, and effectively can promote the quality of foundry goods.
(2) low pressure casting molten bath device of the present invention adopts the method casting in molten bath, there are buffering, current stabilization effect in the molten bath being full of molten metal to the molten metal being entered molten bath by stalk, what the molten metal through molten bath was slow, stable enters ingate, avoid molten metal washing away casting mold, decrease the defects such as burning into sand.
(3) in the process of setting of casting, the principle of consecutive solidification mainly followed by low-pressure casting foundry goods, generally first solidifies from the place away from ingate, therefore, ingate, the cross gate of low-pressure casting system are equivalent to rising head, under the effect of dwell pressure, carry out feeding to foundry goods.But fill type complete after cross gate, ingate temperature can reduce gradually, feeding effect also foundry goods weakens.Low pressure casting molten bath device of the present invention have employed molten bath, in casting, casting solidification process, the temperature of the molten metal in molten bath remains on melt temperature always, can not significantly reduce, under the effect of the pressure, whole molten bath is equivalent to a huge rising head, carries out feeding at whole process of setting to foundry goods, feeding effect is better, the better quality of foundry goods.
(4) cross gate of casting system can be served as in the molten bath that low pressure casting molten bath device of the present invention adopts.Directly entered the ingate of foundry goods through roof hole by molten bath molten metal out.Thus, molten bath is as the general cross gate of foundry goods, without the need to offering cross gate in each casting sand mold or metal mold, only be required to be the top board that often kind of casting design one is applicable, mould development expense can be reduced, and the casting defect caused because of cross gate quality problems in sand casting modeling process can be reduced, alleviate workload, provide cost savings.
(5) molten metal in low pressure casting molten bath device molten bath of the present invention is in liquid state all the time, and more than top board top ingate can solidify gradually along with the reduction of temperature, when foundry goods, ingate solidify completely, molten bath below ingate is also in liquid state, during release, the molten metal in molten bath below ingate can fall back holding furnace under gravity, the molten metal of holding furnace of falling back can carry out the casting of next foundry goods, the recovery of whole process implementation to molten bath inner metal liquid.Thus, the weight of whole spray contains only the weight of foundry goods and ingate, and originally the molten metal of cross gate successfully reclaims, and improves the product yield of foundry goods.
(6) the housing bottom opening of low pressure casting molten bath device of the present invention is fixedly connected on base, the top open part of housing is provided with flange, the arc-shaped end plate portion that housing is oppositely arranged by two pieces of side plates be oppositely arranged and two pieces is end to end to be formed, the outer of each side plate is provided with many reinforcements from up to down arranged, the top of reinforcement is connected with flange, the bottom of reinforcement is connected with base, thus make housing both can bear the gravity of top sandbox and metal type dies, the immense pressure produced when molten metal is full of molten bath can be born again, the housing of this shape matches with reinforcement and at high temperature has excellent non-deformability.Meanwhile, heating rod can be plugged on easily on reinforcement and to be positioned at the both sides of relatively long side plate, is conducive to molten bath thermally equivalent.
(7) heater of low pressure casting molten bath device of the present invention adopts grafting to be fixed on reinforcement and presses close to the heating rod of housing, and maintenance maintenance is more convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of the low pressure casting molten bath device of the embodiment of the present invention 1.
Fig. 2 is the upward view of the low pressure casting molten bath device in Fig. 1.
Fig. 3 is the top view after low pressure casting molten bath device in Fig. 1 removes top board.
Fig. 4 is that half sectional view is looked on the left side after the low pressure casting molten bath device in Fig. 3 removes top board.
Fig. 5 is the structural representation of the top board of low pressure casting molten bath device in Fig. 1.
A-A sectional view when Fig. 6 is its inner walls of low pressure casting molten bath device in Fig. 1 uncoated insulation material.
B-B sectional view when Fig. 7 is its inner walls of low pressure casting molten bath device in Fig. 1 uncoated insulation material.
C-C sectional view when Fig. 8 is its inner walls of low pressure casting molten bath device in Fig. 1 uncoated insulation material.
Fig. 9 is the using state figure of the low pressure casting molten bath device in Fig. 1.
Figure 10 is that half sectional view is looked on the left side after the low pressure casting molten bath device of the embodiment of the present invention 2 removes top board.
The mark of above-mentioned accompanying drawing is as follows:
Housing 1, side plate 1-1, side plate 1-2, end plate 1-3, end plate 1-4, inner vertical walls face 1-5, curved inner wall face 1-6, flange 1-7, base plate 1-8, base 2, opening 2-1, connecting plate 3, spacing hole 3-1, top board 4, gate orifice 4-1, heating rod 5, insulation material 6, stalk 7, temperature sensor 8, reinforcement 9, through hole 9-1, gap 9-2, seal groove 10, sealing strip 11, ingate 12, casting mold die cavity 13, sandbox 14, crucible 15, aluminium liquid 16, holding furnace cover plate 17.
Detailed description of the invention
Embodiment 1
See Fig. 1 to Fig. 4 and Fig. 6 to Fig. 8, the low pressure casting molten bath device of the present embodiment, comprise housing 1, base 2, connecting plate 3, top board 4, heating rod 5, stalk 7 and temperature sensor 8.Housing 1 has open top and bottom opening, and the open top of housing 1 is greater than bottom opening, and the inwall of housing 1 has the curved inner wall face 1-6 of inner vertical walls face 1-5 and inward collapsible.Arc-shaped end plate portion 1-3,1-4 that housing 1 is oppositely arranged by two pieces of side plate 1-1,1-2 be oppositely arranged and two pieces are formed, and make side plate 1-1,1-2 and end plate 1-3, the steel plate thickness of 1-4 is 3mm.When end plate 1-3,1-4 extend to bottom from top, relatively draw in and be convexly curved.Side plate 1-1,1-2 have from top to the vertical section of downward-extension and the curved bend tune of inward collapsible.Inner vertical walls face 1-5 is positioned at vertical section, and curved inner wall face 1-6 is positioned at curved bend tune.The top open part of housing 1 is provided with flange 1-7, and the bottom of housing 1 is fixedly connected with base 2, base 2 has the opening 2-1 communicated with the bottom opening of housing 1.The coated inner wall of the opening 2-1 of base 2 has insulation material 6, and the coated inner wall of housing 1 has insulation material 6, and insulation material 6 is that refractory fibre is stuck with paste, and the thickness of insulation material 6 is 30mm.The outer wall of housing 1 be provided with 12 pieces from up to down direction to arrange and perpendicular to the reinforcement 9 of housing 1.The top of reinforcement 9 is connected with flange 1-7, and the bottom of reinforcement 9 is connected with base 2.The steel plate of reinforcement 9 to be thickness be 10mm.The outer wall of wherein every block side plate 1-1,1-2 is interval with five pieces of reinforcements 9, and the middle part of the outer wall of every block end plate 1-3,1-4 is provided with one piece of reinforcement 9.On the outer wall being positioned at side plate 1-1,1-2, reinforcement 9 is provided with through hole 9-1, and heating rod 5 has two groups, and often organizing heating rod 5 has four, and heating rod 5 is plugged in the through hole 9-1 of corresponding reinforcement 9 respectively, thus level frame is located on reinforcement 9.Two groups of heating rods 5 lay respectively at the both sides of housing 1.The each heating rod 5 often organized parallel to each other and equidistantly interval arrange.The outer wall of housing 1 and the outer surface of heating rod 5 are all coated with asbestos, are filled with asbestos between housing 1 and heating rod 5.Top board 4 is covered on the top open part of housing 1 and is fixedly connected with flange 1-7 by bolt, and flange 1-7 is provided with seal groove 10, is provided with sealing strip 11 in seal groove 10.Connecting plate 3 is positioned at the below of base 2, and is fixedly connected with base 2 by bolt.Connecting plate 3 offers spacing hole 3-1.Stalk 7 through spacing hole 3-1, and is fixedly connected with connecting plate 3 by flange, and the opening 2-1 of base 2 communicates with stalk 7.Connecting plate 3 is fixedly connected with the holding furnace cover plate 17 of existing low-pressure die casting plant by bolt.
Also be provided with sealing strip 11 between connecting plate 3 and base 2, between connecting plate 3 and holding furnace cover plate 17, be also provided with sealing strip 11.Sealing strip 11 all adopts mud bar.
Heating rod 5 comprises metal shell, is located at the heating resistive element in described metal shell and is filled in the crystal magnesium oxide powder between described metal shell and heating resistive element.
Temperature sensor 8 is thermocouples that outer cover has earthenware.Temperature sensor 8 is located in housing 1, and its thermometric end stretches out the inner wall surface of housing 1.Temperature sensor 8 is for monitoring molten bath device internal temperature.
Stalk is made up of ceramic material.
See Fig. 1 and Fig. 5, top board 4 offers the gate orifice 4-1 be oppositely arranged with the ingate 12 of casting mold.Gate orifice 4-1 is communicated with the inner chamber of ingate 12 and housing 1.
See Fig. 6 and Fig. 7, housing 1 cross section is in the horizontal direction four angles is the rectangle of arc, and the girth of cross section is from top to bottom shorter and shorter.The bottom opening place of housing 1 is provided with base plate 1-8, and the lower surface of base plate 1-8 is attached on base 2.
Seeing Fig. 9, the low pressure casting molten bath device of the present embodiment, when assembling, first connecting plate 3 being bolted to connection above the holding furnace cover plate 17 of existing low-pressure die casting plant.Again housing 1 is fixedly connected with connecting plate 3 by bolt by its base 2.The top of connecting plate 3 and bottom are provided with seal groove 10, are provided with sealing strip 11 in seal groove 10, and sealing strip 11 is mud bars, thus holding furnace cover plate 17, connecting plate 3 and base 2 are sealed, in case leak-stopping gas by mud bar.Inserted by stalk 7 in the crucible 15 of existing low-pressure die casting plant, connecting plate 3 offers the spacing hole 3-1 penetrated for stalk 7, stalk 7 is fixedly connected with connecting plate 3 by flange.Then on the wall of the inner chamber of housing 1, insulation material 6 is pasted over.Select the top board 4 matched with the to be cast sandbox 14 carrying out casting mold die cavity 13, top board 4 is fixedly connected with by the top of bolt with housing 1.The top of housing 1 is provided with seal groove 10, is provided with sealing strip 11 in seal groove 10, and sealing strip 11 is mud bars, thus top board 4 and housing 1 are sealed by mud bar.Sandbox 14 to be cast is placed in the top of top board 4, and each ingate 12 of sandbox 14 aligns with the gate orifice 4-1 of top board 4 and communicates.
The using method of the low pressure casting molten bath device of the present embodiment, comprises following concrete steps:
A. open heating rod 5 pairs of housings 1 to heat, by the temperature in temperature sensor 8 in real time monitoring housing 1 inner chamber.
B. cast is started when the temperature in housing 1 inner chamber reaches more than 600 DEG C, aluminium liquid 16 enters through stalk 7 in the inner chamber of housing 1 under the effect of the pressure, after being filled up by the inner chamber of housing 1, aluminium liquid 16 flows through the gate orifice 4-1 of top board 4 and ingate 12 enters casting mold die cavity 13.
C. aluminium liquid 16 starts to solidify after being full of casting mold die cavity 13, and the aluminium liquid in the inner chamber of housing 1 16 adds in casting mold die cavity 13 under the effect of the pressure.
Embodiment 2
See Figure 10, the low pressure casting molten bath device remainder of the present embodiment is identical with embodiment 1, and difference is: reinforcement 9 is provided with gap 9-2, and heating rod 5 is plugged in the gap 9-2 of corresponding reinforcement 9 respectively, thus level frame is located on reinforcement 9.
Low pressure casting molten bath device of the present invention and using method thereof are not limited to the various embodiments described above.Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description, as the type of selected steel plate thickness, insulation material, the setting etc. of temperature sensor location, corresponding adjustment can be done according to actual needs.Here exhaustive without the need to also giving all embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (15)
1. a low pressure casting molten bath device, comprise housing (1) and top board (4), the coated inner wall of housing (1) has insulation material (6), housing (1) has open top and bottom opening, the top open part of housing (1) is provided with flange (1-7), and described top board (4) is covered on the top open part of described housing (1) and is fixedly connected with described flange (1-7); Described top board (4) offers gate orifice (4-1); Described gate orifice (4-1) can be communicated with the ingate (12) of casting mold die cavity (13) and the inner chamber of housing (1), it is characterized in that:
Also comprise base (2) and heating rod (5); The bottom of described housing (1) is fixedly connected with base (2); The open top of described housing (1) is greater than bottom opening, and the inwall of housing (1) has the curved inner wall face (1-6) of inner vertical walls face (1-5) and inward collapsible, the arc-shaped end plate portion (1-3,1-4) that described housing (1) is oppositely arranged by two pieces of side plates be oppositely arranged (1-1,1-2) and two pieces is formed; The outer wall of described side plate (1-1,1-2) is provided with the reinforcement (9) of from up to down direction setting; The top of described reinforcement (9) is connected with flange (1-7), and the bottom of described reinforcement (9) is connected with base (2); Described heating rod (5) is plugged on described reinforcement (9); Described base (2) has the opening (2-1) communicated with the bottom opening of housing (1).
2. low pressure casting molten bath device according to claim 1, is characterized in that: when described end plate (1-3,1-4) extends from top to bottom, relatively draws in and is convexly curved; Described side plate (1-1,1-2) has from top to the vertical section of downward-extension and the curved bend tune of inward collapsible, and described inner vertical walls face (1-5) is positioned at vertical section, and described curved inner wall face (1-6) is positioned at curved bend tune; The bottom opening place of described housing (1) is provided with base plate (1-8), and the lower surface of described base plate (1-8) is attached on base (2).
3. low pressure casting molten bath device according to claim 1, is characterized in that: described heating rod (5) is parallel to side plate (1-1,1-2) and arranges.
4. low pressure casting molten bath device according to claim 1, is characterized in that: the outer wall of described housing (1) and the outer surface of heating rod (5) are all coated with asbestos, are filled with asbestos between described housing (1) and heating rod (5).
5. low pressure casting molten bath device according to claim 1, is characterized in that: the outer wall of described each end plate (1-3,1-4) is provided with the reinforcement (9) from up to down arranged.
6. according to the low pressure casting molten bath device one of claim 1 to 5 Suo Shu, it is characterized in that: also comprise the temperature sensor (8) for monitoring molten bath device internal temperature.
7. according to the low pressure casting molten bath device one of claim 1 to 5 Suo Shu, it is characterized in that: the temperature sensor (8) also comprising the internal temperature for monitoring molten bath device, described temperature sensor (8) is located in housing (1).
8. according to the low pressure casting molten bath device one of claim 1 to 5 Suo Shu, it is characterized in that: also comprise the temperature sensor (8) for monitoring molten bath device internal temperature, described temperature sensor (8) is located in housing (1), and its thermometric end stretches out the inner wall surface of housing (1).
9. low pressure casting molten bath device according to claim 8, is characterized in that: described temperature sensor (8) is the thermocouple that outer cover has earthenware.
10. according to the low pressure casting molten bath device one of claim 1 to 5 Suo Shu, it is characterized in that: described reinforcement (9) is arranged perpendicular to the outer wall of housing (1).
11. according to the low pressure casting molten bath device one of claim 1 to 5 Suo Shu, it is characterized in that: described reinforcement (9) is provided with through hole (9-1), described heating rod (5) is plugged in the through hole (9-1) of described reinforcement (9), thus level frame is located on described reinforcement (9).
12. according to the low pressure casting molten bath device one of claim 1 to 5 Suo Shu, it is characterized in that: described reinforcement (9) is provided with gap (9-2), described heating rod (5) is plugged in the through hole gap (9-2) of described reinforcement (9), thus level frame is located on described reinforcement (9).
13., according to the low pressure casting molten bath device one of claim 1 to 5 Suo Shu, is characterized in that: also comprise connecting plate (3) and stalk (7); Described connecting plate (3) is positioned at the below of base (2), and is fixedly connected with base (2) is removable; Described connecting plate (3) offers spacing hole (3-1); Described stalk (7) through spacing hole (3-1), and is fixedly connected with described connecting plate (3) by flange, and the opening (2-1) of described base (2) communicates with described stalk (7).
14. low pressure casting molten bath device according to claim 11, it is characterized in that: described top board (4) is fixedly connected with described flange (1-7) by bolt, described base (2) is fixedly connected with described connecting plate (3) by bolt, and described connecting plate (3) is fixedly connected with the holding furnace cover plate (17) of low-pressure die casting plant by bolt.
15. low pressure casting molten bath device according to claim 11, it is characterized in that: between described flange (1-7) and top board (4), be provided with sealing strip (11), be provided with sealing strip (11) between described connecting plate (3) and base (2), between described connecting plate (3) and holding furnace cover plate (17), be provided with sealing strip (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510052208.2A CN104668521B (en) | 2014-12-31 | 2015-01-31 | Low-pressure casting bath unit |
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| CN2014108543167 | 2014-12-31 | ||
| CN201410854316 | 2014-12-31 | ||
| CN201510052208.2A CN104668521B (en) | 2014-12-31 | 2015-01-31 | Low-pressure casting bath unit |
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| CN104668521A true CN104668521A (en) | 2015-06-03 |
| CN104668521B CN104668521B (en) | 2017-05-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107876735A (en) * | 2017-12-28 | 2018-04-06 | 上海爱仕达汽车零部件有限公司 | A kind of low pressure casting electrical heating rises liquid case |
| CN113874136A (en) * | 2019-05-22 | 2021-12-31 | 本田技研工业株式会社 | Low-pressure casting device |
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| US11597007B2 (en) | 2019-05-22 | 2023-03-07 | Honda Motor Co., Ltd. | Low-pressure casting device |
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| CN104668521B (en) | 2017-05-03 |
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