CN101801563B - Intermediate stoke, method for producing the same and low pressure casting device - Google Patents
Intermediate stoke, method for producing the same and low pressure casting device Download PDFInfo
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- CN101801563B CN101801563B CN2009801003771A CN200980100377A CN101801563B CN 101801563 B CN101801563 B CN 101801563B CN 2009801003771 A CN2009801003771 A CN 2009801003771A CN 200980100377 A CN200980100377 A CN 200980100377A CN 101801563 B CN101801563 B CN 101801563B
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- fire retarding
- stoke
- retarding component
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- 238000005266 casting Methods 0.000 title claims description 37
- 238000004519 manufacturing process Methods 0.000 title claims description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 104
- 239000002184 metal Substances 0.000 claims abstract description 104
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000000979 retarding effect Effects 0.000 claims description 110
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 abstract description 19
- 238000010438 heat treatment Methods 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000012212 insulator Substances 0.000 abstract 4
- 238000004512 die casting Methods 0.000 abstract 2
- 239000011819 refractory material Substances 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 230000018044 dehydration Effects 0.000 description 8
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- 229910010272 inorganic material Inorganic materials 0.000 description 7
- 239000011147 inorganic material Substances 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
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- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000010455 vermiculite Substances 0.000 description 3
- 229910052902 vermiculite Inorganic materials 0.000 description 3
- 235000019354 vermiculite Nutrition 0.000 description 3
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
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- 238000002309 gasification Methods 0.000 description 1
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- 150000002505 iron Chemical class 0.000 description 1
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Incineration Of Waste (AREA)
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Abstract
An intermediate stalk (10) that is used for a low-pressure die-casting apparatus includes a metal covering material (2), and a precast refractory material (1) that is removably fitted into the metal covering material (2), an air release opening (3) being formed between the metal covering material (2) and the precast refractory material (1) when viewed from above. According to the present invention, an intermediate stalk that allows water to be sufficiently released from the refractory heat insulator during heating, does not explode, does not produce cracks in the refractory heat insulator due to the difference in coefficient of thermal expansion between the refractory heat insulator and the metal covering material, and allows easy replacement of the refractory heat insulator, a method of producing the same, and a low-pressure die-casting apparatus can be provided.
Description
Technical field
The middle stoke (intermediate stoke) that the present invention relates to the low-pressure casting apparatus that in the manufacturing of aluminium casting etc., uses with and manufacture method.
Background technology
As shown in Figure 6, the low-pressure casting apparatus that uses in the manufacturing of aluminium casting etc. is via stalk 104 and middle stoke 103 the aluminium motlten metal 102 in the molten metal container 101 to be sent into the device 100 that metal pattern 105 is cast.
Requirement can bear 600～700 ℃ molten metal temperature, not need external heat system etc. in the middle stoke 103 that uses in low-pressure casting apparatus 100, therefore, known in recent years have the inboard that utilizes the metal crust member 113 of refractory heat-insulating member 123 coverings and the middle stoke 103 that forms.
Summary of the invention
The problem that invention will solve
But, for the middle stoke 103 of TOHKEMY 2006-272448 communique and low-pressure casting apparatus 100 with this centre stoke 103, because utilize crust member 113 seamlessly to cover the outside of refractory heat-insulating member, so refractory heat-insulating member 123 the dehydration of when heating is poor, thereby refractory heat-insulating member 123 might expand destroyed because of the gasification of the moisture that contained.In addition, though be to have sandwiched the structure that is used for mutual thermal expansion difference is adjusted the inorganic material 133 of absorption, but utilize such inorganic material 133 to absorb the scarce capacity of the thermal expansion rate variance between refractory heat-insulating member 123 and the metal crust member 113, because the heating during actual the use produces be full of cracks sometimes on refractory heat-insulating member 123.In addition, when destroying refractory heat-insulating member 123 in order to change,, produce into scar or distortion at crust member 113 sometimes because on metal crust member 113, also born excessive power.In addition, during initial heating when making or during actual the use, the protected against the effects of immersion agent (waterproofing agent) that is used to paste the bonding agent of inorganic material 133 or inorganic material 133 is decomposed and is produced cigarette or smell.
In addition, the moisture that contained of said refractory heat-insulating member is included in these two kinds of moisture in the residual fraction of the hydrous water that uses when covering in the refractory heat-insulating member manufacture process and refractory piece absorbs when keeping is placed the atmosphere.
Thereby, the object of the present invention is to provide following middle stoke, its manufacture method and low-pressure casting apparatus, promptly, the dehydration of fire retarding component well during heating, explosion can not appear, the problem that does not have the be full of cracks of the fire retarding component that the thermal expansion rate variance because of fire retarding component and metal crust member causes, and fire retarding component is easy to change.
The means that are used to deal with problems
Under this actual conditions, people of the present invention have carried out studying intensively in earnest, found that in middle stoke, if prefabricated fire retarding component can freely be embedded with loading and unloading the inboard of metal crust member, and be provided for discharging the gap of air between this crust member under overlooking and this prefabricated fire retarding component, the dehydration of fire retarding component well when then heating, explosion can not appear, the problem that does not have the be full of cracks of the fire retarding component that the thermal expansion rate variance because of fire retarding component and metal crust member causes, and fire retarding component is easy to replacing etc., thereby has finished the present invention.
That is, the invention provides a kind of middle stoke, in low-pressure casting apparatus, use, it is characterized in that having: metal crust member; Can freely embed the prefabricated fire retarding component in this crust member in the inboard of this metal crust member with loading and unloading; Be provided with the gap that is used to discharge air between this crust member under overlooking and this prefabricated fire retarding component.
In addition, the invention provides a kind of low-pressure casting apparatus, it is characterized in that, have described middle stoke.
In addition, the invention provides a kind of manufacture method of middle stoke, be used for low-pressure casting apparatus, it is characterized in that, the inboard that embeds metal crust member by the prefabricated fire retarding component that will be made as following shape in advance makes, this is shaped as when described prefabricated fire retarding component being embedded metal crust member inboard, is formed with the gap that is used to discharge air under overlooking between this crust member and this prefabricated fire retarding component.
The effect of invention
According to stoke in the middle of of the present invention and low-pressure casting apparatus, because prefabricated fire retarding component can freely be embedded with loading and unloading the inboard of metal crust member, and be provided with the gap that is used to discharge air between this crust member under overlooking and this prefabricated fire retarding component, so the dehydration of fire retarding component well during heating, explosion can not appear, the problem that does not have the be full of cracks of the fire retarding component that the thermal expansion rate variance because of fire retarding component and metal crust member causes, and fire retarding component is easy to change.In addition, because the replacing operation of the fire retarding component in not having to safeguard does not make metal system crust component damage so can not occur following changing.In addition, according to the manufacture method of stoke in the middle of of the present invention, because prefabricated fire retarding component is not to make as molding box with metal crust member, so can make facilities such as manufacturing site location and manufacturing installation, the free degree height of Zhi Zaoing thus.In addition, just can be made into middle stoke because in fact only prefabricated fire retarding component is embedded metal crust member, so can reduce manufacturing cost.
Description of drawings
Fig. 1 is the cutaway view of the middle stoke of present embodiment, Fig. 2 is the vertical view of the middle stoke of Fig. 1, Fig. 3 is the figure of an example of the fixing means of the prefabricated fire retarding component in the stoke in the middle of the expression, (A) of Fig. 3 is the vertical view of other modes of the part of surrounding with double dot dash line among Fig. 2, (B) of Fig. 3 is the front view of Fig. 3 (A), (C) of Fig. 3 is the front view of the fixing part of plate of being pressed, (D) of Fig. 3 is the vertical view of Fig. 3 (C), Fig. 4 is the figure of the manufacture method of explanation middle stoke of the present invention, Fig. 5 is the skeleton diagram of low-pressure casting apparatus of the present invention, and Fig. 6 is the skeleton diagram of low-pressure casting apparatus in the past.
The specific embodiment
Below, with reference to Fig. 1～Fig. 5 the middle stoke of embodiments of the present invention and the low-pressure casting apparatus with this centre stoke are described.Fig. 1 is the cutaway view of the middle stoke of this example, Fig. 2 is the vertical view of the middle stoke of Fig. 1, Fig. 3 is the figure of an example of the fixing means of the prefabricated fire retarding component in the stoke in the middle of the expression, (A) of Fig. 3 is the vertical view of other modes of the part of surrounding with double dot dash line among Fig. 2, (B) of Fig. 3 is the front view of Fig. 3 (A), (C) of Fig. 3 is the front view of the fixing part of plate of being pressed, (D) of Fig. 3 is the vertical view of Fig. 3 (C), Fig. 4 is the figure of the manufacture method of explanation middle stoke of the present invention, and Fig. 5 is the skeleton diagram of low-pressure casting apparatus.
The material of metal crust member 2 need not limit especially, with identical in the past, enumerates the crust member of cast iron.The shape of metal crust member 2 need not limit especially, can be with identical in the past, and preferably the peristome in the bottom has the horizontal part 21 of the flat condition that is used to support prefabricated fire retarding component 1.Owing to around bottom peristome, be provided with the horizontal part 21 of flat condition, thus improved the horizontal bottom with flat condition prefabricated fire retarding component 1 stability is set.
In the stoke 10, prefabricated fire retarding component 1 can freely embed in the crust member 2 in the inboard of metal crust member 2 with loading and unloading in the middle of of the present invention.The chimeric mode of prefabricated fire retarding component 1 and metal crust member 2 can be chimeric arbitrarily mode so long as be formed with the gap 3 that is used to discharge air between the crust member 2 and prefabricated fire retarding component 1 overlooking down.The middle stoke 10 of this example is the structure by the prefabricated fire retarding component 1 of bottom support.That is, be formed with the horizontal bottom 11 of flat condition in the parameatal outside of prefabricated fire retarding component 1 bottom, the horizontal bottom 11 of the flat condition of prefabricated fire retarding component 1 is arranged on via containment member 4 on the horizontal part 21 of flat condition of metal crust member 2.Owing between the support portion of such two members (abutting part), have containment member 4, spill by the gap between prefabricated fire retarding component 1 and the metal crust member 2 so can prevent motlten metal.
For example can enumerate the sheet material of organic bond of the vermiculite of not firing, 5～20 quality % of the ceramic fibre that comprises 20～40 quality %, 40～70 quality % as containment member.This adds the preferred 500～800kg/cm of density of thermal expansivity sheet
3, 600～700kg/cm especially
3
The chimeric mode of prefabricated fire retarding component 1 and metal crust member 2 is except aforesaid way, it can also be the mode that supports the part of prefabricated fire retarding component 1 lateral surface (outer peripheral face) with the part of metal crust member 2 medial surfaces (inner peripheral surface), for example, utilize roughly the latter halfs of metal crust member 2 medial surfaces to support roughly the latter half of prefabricated fire retarding component 1 lateral surface.Even the situation that such inner peripheral surface contacts with the part of outer peripheral face is because also have the gap that air is discharged to top, so can not hinder the dehydration of fire retarding component when heating.
Of the present invention in the middle of stoke 10 under overlooking crust member 2 and prefabricated fire retarding component 1 between be provided with the gap 3 that is used to discharge air.As shown in Figure 2, the gap under said the overlooking is meant under the state of stoke 10 in the middle of top the observation, can observes gap 3 between metal crust member 2 and prefabricated fire retarding component 1.By being provided with the gap 3 that is used to discharge air between crust member 2 under overlooking and the prefabricated fire retarding component 1, the dehydration of fire retarding component well when then heating, explosion can not appear, the problem that does not have the fire retarding component be full of cracks that the thermal expansion rate variance because of fire retarding component and metal crust member causes, and fire retarding component is easy to change.
In middle stoke 10, gap 3 is more than the 0.5mm, more than the preferred 1.0mm, is in particular more than the 2.0mm.The higher limit in gap 3 is restriction especially not, but if excessive, being provided with of then prefabricated fire retarding component 1 is stable low, so the higher limit in gap 3 is approximately 5mm.In addition, crust member 2 under overlooking and the gap 3 between the prefabricated fire retarding component 1 promptly can be formed on the part in the complete cycle, in addition, also can be formed on the complete cycle between metal crust member 2 and the prefabricated fire retarding component 1.Wherein, from be easy to design, the stable this respect that is provided with of prefabricated fire retarding component 1 considers, preferably all forms the mode in gap on the complete cycle of 1 of metal crust member 2 and prefabricated fire retarding component.
In addition, as shown in Figure 1, can make the gap 3 between metal crust member 2 and the prefabricated fire retarding component 1 and be formed on the inner peripheral surface 25 of sidepiece of metal crust member 2 inboards and the outer peripheral face 15 of the sidepiece in prefabricated fire retarding component 1 outside between internal clearance 3a continuous.In addition, as mentioned above, for example be to utilize roughly the latter halfs of metal crust member 2 medial surfaces to support under the situation of structure of roughly the latter half of prefabricated fire retarding component 1 lateral surface, make the gap 3 between metal crust member 2 and the prefabricated fire retarding component 1 and the gap that forms by roughly the first half of the roughly the first half of metal crust member 2 medial surfaces and prefabricated fire retarding component 1 lateral surface continuous.
Prefabricated fire retarding component 1 can use known thermal insulation barriers material.In addition, prefabricated fire retarding component 1 also is suitable for using unshape refractory.As unshape refractory, can enumerate with calcium silicates material or silica species as main material and add alumina cement (alumina cement) class bond material and water mixing therein and the material that obtains, perhaps add mica, carbon, silicon carbide powder or alpha-silicon nitride powders therein as main material and as the good material of water soak resistance with inorganic substances fiber and alumina class powder, and then the material of the paste of the inorganic bond of adding silica or alumina class and tackify material and the acquisition of water mixing etc.
Stoke 10 can form heat insulating component at the outer peripheral face of prefabricated fire retarding component 1 in the middle of of the present invention.By forming (coverings) heat insulating component, can improve the thermal insulation of centre stoke, thereby can avoid the situation of the defective that produces because of molten metal temperature is low at the outer peripheral face of prefabricated fire retarding component 1.In addition, the heat insulating component that forms is so also brought into play the function of the joint filling member that prevents that motlten metal from oozing out by the crack of prefabricated fire retarding component 1.Inorfil combination that is called inorfil system felt (felt) or blanket (blanket) etc. can be enumerated as such heat insulating component, ceramic fibre, silicon dioxide fibre or alumina fiber etc. can be enumerated as inorfil.Even be formed with the middle stoke of heat insulating component at the outer peripheral face of prefabricated fire retarding component 1, the also metal crust member 2 under overlooking and be formed with between the prefabricated fire retarding component 1 of heat insulating component and have the gap 3 that is used to discharge air, in addition, can between the outer peripheral face of the sidepiece in the heat insulating component outside of the inner peripheral surface 25 of the sidepiece of metal crust member 2 inboards and prefabricated fire retarding component 1, form inner gap 3a.
In addition, of the present invention in the middle of stoke 10 can be following structure, that is, and on the part between metal crust member 2 and the prefabricated fire retarding component 1 especially on the part of the latter half, sandwich have flexibility and heating and expand add the thermal expansivity sheet.Thus, improve the stability that is provided with of prefabricated fire retarding component 1.Adding the thermal expansivity sheet is for example to begin to expand at 300～400 ℃, and the sheet that expands on thickness direction.This expansion rate is being more than 2 times on the thickness direction, preferred 2～4 times.If expansion rate is in this scope, can prevent that then clamping from having the gap of 1 of metal crust member 2 on the part that adds the thermal expansivity sheet and prefabricated fire retarding component, reach stable and heat insulation these two effects are set.In addition, in Fig. 1, Reference numeral 5 is handle parts of metal crust member 2.
In the middle of of the present invention in the stoke 10, can utilize 4 or a pair of two places that are positioned at diagonal on of pressing plate from 4 jiaos of top fixedly embedded prefabricated fire retarding component 1 in metal crust member 2 inboards.Thus, stably fix prefabricated fire retarding component 1.Explanation utilizes the fixing means of pressing plate with reference to Fig. 3.A bight in middle stoke 10 upper ends, that observes from above is shaped as general triangular, is formed with incised notch portion 6 at depth direction with the size of regulation.Incised notch portion 6 comprises the incised notch part 61 of metal crust member 2 and the incised notch part 62 of prefabricated fire retarding component 1.On the incised notch part 61 of metal crust member 2, be formed with screw hole 7 (Fig. 3 (A)).Prepare the pressing plate 8 in the shape that shape can be embedded into this incised notch portion 6.Be formed with through hole on pressing plate 8, this through hole is used to connect flat head screw (flush bolt) 9, and be in and be provided with after screw hole 7 position (Fig. 3 (B)) in opposite directions.And if pressing plate 8 is embedded incised notch portion 6 and trip bolt, then by being positioned at the rebound effect with flexible containment member 4 of bottom surface, prefabricated fire retarding component 1 is securely fixed in ((C) of Fig. 3 and (D) of Fig. 3) on the metal crust member 2.
Below, illustrate of the present invention in the middle of the manufacture method of stoke.Stoke 10 is to make by the inboard that the prefabricated fire retarding component 1 that will be made into following shape in advance embeds metal crust member 2 in the middle of of the present invention, this is shaped as when embedding metal crust member 2 inboard, is formed with the gap 3 that is used to discharge air down overlooking between metal crust member 2 and prefabricated fire retarding component 1.
Prefabricated fire retarding component 1 is to be made by the unshape refractory of explanation in the middle stoke 10 of the invention described above.Prefabricated fire retarding component 1 is not because make as molding box with metal crust member 2, so can make facilities such as manufacture method and manufacturing installation, the free degree height of Zhi Zaoing thus.In addition, under the situation of the structure that as middle stoke in the past, metal crust member 2 and fire retarding component is formed one, if improve the heating-up temperature when making, then metal crust member 2 oxidations or distortion are so need to limit this heating-up temperature low.In this case, evaporation of residual moisture or heat shrink can take place in fire retarding component when reality is used, so might damage refractory piece.But, of the present invention in the middle of the manufacture method of stoke 10 because be not to make as molding box, so the prefabricated fire retarding component 1 of high-temperature firing in advance with metal crust member 2.Therefore, the evaporation or the heat shrink of residual moisture can not appear in fire retarding component when reality is used.In addition, just can make middle stoke 10 in the metal crust member 2 because in fact only prefabricated fire retarding component 1 is embedded, so can reduce manufacturing cost.
Have under the situation of containment member 4 at middle stoke 10, before embedding prefabricated fire retarding component 1, as long as containment member 4 is embedded the peristome assigned position (with reference to Fig. 4) on every side of middle stoke 10 bottom surfaces.Thus, can make middle stoke 10 by simple method.
Low-pressure casting apparatus 20 of the present invention has middle stoke 10.That is, as shown in Figure 5, low-pressure casting apparatus 20 of the present invention has: molten metal container (crucible) 31, its motlten metal 32 of packing into; Bell 36, it seals molten metal container; Stalk 34, its central portion at bell 36 connects bell 36, and it is interior relative with motlten metal 32 that the peristome of bottom is set to; Middle stoke 10, its mode that is communicated with the upper opening of stalk 34 with the bottom opening of middle stoke 10 is arranged on the top of stalk 34; Metal pattern 35, the top of stoke 10 in the middle of it is arranged on.
In low-pressure casting apparatus 20 of the present invention, the motlten metal 32 in the molten metal container 31 is heated by not shown heater and becomes molten condition.In addition, be applied with the pressure of the forced air shown in the arrow P by not shown device, motlten metal 32 be pushed in the metal pattern 35 via the liquation stream of stalk 34 and middle stoke 10 by this pressure effect at the motlten metal face of motlten metal 32.In addition, has not shown air tap on the top of metal pattern 35, from discharging unnecessary air here.
Dispose the casting mold corresponding with the goods that will cast in metal pattern 35, the motlten metal 32 that is pushed up flows in this casting mold.Then, make metal pattern cooling, thereby for example can obtain casting product such as aluminium casting in the suitable moment (timing).Here, show the structure of motlten metal being pushed to the low-pressure casting apparatus that is supplied to metal pattern, but also can be to make decompression in the metal pattern 35, suct the low-pressure casting apparatus of the structure of motlten metal by this depressurization, or make on one side decompression in the metal pattern 35, by malleation push to the low-pressure casting apparatus etc. of the structure of motlten metal on one side.
According to low-pressure casting apparatus 20 of the present invention, because be provided with the gap that is used to discharge air between this crust member under overlooking and this prefabricated fire retarding component, so the dehydration of fire retarding component well during heating, explosion can not appear, the problem that does not have the be full of cracks of the fire retarding component that the thermal expansion rate variance because of fire retarding component and metal crust member causes, and fire retarding component is easy to change.In addition, because the replacing operation of the fire retarding component in not having to safeguard does not make metal system crust component damage so can not follow to change.
Embodiment
Below, to enumerate embodiment and specify the present invention, this only is an illustration, does not limit the present invention.
First embodiment
(manufacturing of prefabricated fire retarding component)
Mixing is made mortar to silica species is cooperated an amount of water with alumina cement in as the unsetting refractory body of bond material as main material.Then, described mortar is injected the resinous finishing die of regulation shape, under 25 ℃, the environment of 80%RH, keep diel and make its sclerosis.Then, make shaping thing after the sclerosis, fire 12 hours with 600 ℃ then, thereby manufacture the prefabricated fire retarding component of Fig. 1 and shape shown in Figure 2 with 110 ℃ of dryings 24 hours.
(manufacturing of middle stoke (assembling))
Dispose the sheet material (containment member) of ceramic fibre system in the bottom of the crust member of the cast iron of shape as depicted in figs. 1 and 2, the sheet material of this ceramic fibre system is provided with the hole identical shaped with the bottom peristome of crust member, and contains the vermiculite of not firing.Be provided with the prefabricated fire retarding component made from said method in the inboard of the crust member of the cast iron that disposes the sealing member, on iron sheet member top and diagonal angle two jiaos, pressing plate be installed, thus stoke in the middle of making.This centre stoke under overlooking the crust member and the complete cycle between the prefabricated fire retarding component on be formed with the gap of 3.0mm.
First comparative example
Utilization will be contained the ceramic fibre sheet attaching of the vermiculite of not firing on the whole surface in the interior week of the crust member of the cast iron of shape illustrated in figures 1 and 2 by the machine bonding agent.Then, the core of the interior face of stoke (inboard covering member) in the middle of the internal configurations of this iron sheet member is used to form.Then, the mortar that will use in first embodiment injects between iron sheet member and the core, keeps diel and make its sclerosis under 25 ℃, the environment of 80%RH.Then, after taking out core, with 110 ℃ of dryings 24 hours.This centre stoke under overlooking the crust member and covering member between very close to each other.
(evaluation method)
When supposing that actual installation is on air injection machine, use gas burner to make environment reach 900 ℃ the inside Fast Heating of middle stoke, at this moment, first comparative example produces the white cigarette that causes because of the organic bonding member.In addition, the fire retarding component after the Visual Confirmation heating has been confirmed by inferring caused be full of cracks of thermal expansion difference and explosion fire retarding component to be come off.On the other hand, in first embodiment, use above-mentioned same evaluation, confirmed all to occur unusually after pining for, heat adding.
The explanation of Reference numeral
1 prefabricated fire retarding component
2 metal crust members
3 are used to discharge the gap of air
4 containment members
5 handle parts
10,103 middle stokes
20,100 low-pressure casting apparatus
31 molten metal containers (crucible)
32 motlten metals
34 stalks
35 metal patterns
36 bells
Utilizability on the industry
According to stoke in the middle of of the present invention and low-pressure casting apparatus, the dehydration of fire retarding component well during heating, explosion can not occur, not have the problem of the be full of cracks of the fire retarding component that the thermal expansion rate variance because of fire retarding component and metal crust member causes, therefore be suitable for the manufacturing of aluminium casting etc.In addition, according to the manufacture method of stoke in the middle of of the present invention, because prefabricated fire retarding component is not to make as molding box with metal crust member, so can make facilities such as manufacturing site location and manufacturing installation, the free degree height of Zhi Zaoing thus.
Claims (7)
1. a middle stoke uses in low-pressure casting apparatus, it is characterized in that having: metal crust member; Can freely embed the prefabricated fire retarding component in this crust member in the inboard of this metal crust member with loading and unloading; Be provided with the gap that is used to discharge air between this crust member under overlooking and this prefabricated fire retarding component.
2. stoke in the middle of as claimed in claim 1 is characterized in that,
On the complete cycle between this crust member and this prefabricated fire retarding component, be formed with the gap more than the 0.5mm.
3. stoke in the middle of as claimed in claim 1 or 2 is characterized in that,
Outer peripheral face at this prefabricated fire retarding component forms heat insulating component.
4. stoke in the middle of as claimed in claim 1 or 2 is characterized in that,
Around the peristome of this stoke bottom surface, centre, between this prefabricated fire retarding component and this crust member, be provided with the containment member that is used to prevent the motlten metal intrusion.
5. stoke in the middle of as claimed in claim 3 is characterized in that,
Around the peristome of this stoke bottom surface, centre, between this prefabricated fire retarding component and this crust member, be provided with the containment member that is used to prevent the motlten metal intrusion.
6. a low-pressure casting apparatus is characterized in that,
Has each described middle stoke in the claim 1～5.
7. the manufacture method of a middle stoke is used for low-pressure casting apparatus, it is characterized in that,
The inboard that embeds metal crust member by the prefabricated fire retarding component that will be made as following shape in advance makes, this is shaped as when described prefabricated fire retarding component being embedded metal crust member inboard, is formed with the gap that is used to discharge air under overlooking between this crust member and this prefabricated fire retarding component.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008181216A JP5255934B2 (en) | 2008-07-11 | 2008-07-11 | Intermediate stalk, manufacturing method thereof, and low pressure casting apparatus |
| JP2008-181216 | 2008-07-11 | ||
| PCT/JP2009/061155 WO2010004848A1 (en) | 2008-07-11 | 2009-06-12 | Intermediate stoke, method for producing the same and low pressure casting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101801563A CN101801563A (en) | 2010-08-11 |
| CN101801563B true CN101801563B (en) | 2011-11-09 |
Family
ID=41506968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801003771A Expired - Fee Related CN101801563B (en) | 2008-07-11 | 2009-06-12 | Intermediate stoke, method for producing the same and low pressure casting device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20100326617A1 (en) |
| EP (1) | EP2181784A4 (en) |
| JP (1) | JP5255934B2 (en) |
| CN (1) | CN101801563B (en) |
| WO (1) | WO2010004848A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017109448A1 (en) * | 2017-05-03 | 2018-11-08 | EKW Gesellschaft mit beschränkter Haftung | Casting nozzle with exchangeable crown |
| WO2020235235A1 (en) * | 2019-05-22 | 2020-11-26 | 本田技研工業株式会社 | Low-pressure casting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0576660U (en) * | 1992-03-24 | 1993-10-19 | 株式会社クボタ | Gate member of hot water supply passage in low pressure casting equipment |
| US5947180A (en) * | 1996-09-25 | 1999-09-07 | Bayer Aktiengesellschaft | Rising pipe for light metal melts |
| JP3549430B2 (en) * | 1999-03-23 | 2004-08-04 | ニチアス株式会社 | Low pressure casting equipment |
| JP2005296959A (en) * | 2004-04-06 | 2005-10-27 | Hitachi Metals Ltd | Stalk for low pressure casting |
| CN2822829Y (en) * | 2005-06-29 | 2006-10-04 | 冷星培 | Liquid-lifting tube of low pressure foundry machine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3019496A (en) * | 1958-10-27 | 1962-02-06 | Bethlehem Steel Corp | Vacuum casting apparatus |
| US3430289A (en) * | 1965-11-01 | 1969-03-04 | Toho Zinc Co Ltd | Apparatus for preparing high purity fine powder of low-melting metals |
| US4345743A (en) * | 1980-10-10 | 1982-08-24 | Alcan Research And Development Limited | Means and method for containing flowing or standing molten metal |
| JPS63132762A (en) * | 1986-11-21 | 1988-06-04 | Ngk Insulators Ltd | Stoke for low pressure casting |
| US5011049A (en) * | 1989-04-17 | 1991-04-30 | General Electric Company | Molten metal transfer tube |
| JPH0447856U (en) * | 1990-08-27 | 1992-04-23 | ||
| JPH0577023A (en) * | 1991-09-18 | 1993-03-30 | Tokyo Yogyo Co Ltd | Ceramic stoke for low pressure casting |
| JP2532153Y2 (en) * | 1993-06-01 | 1997-04-09 | マツダ株式会社 | Stoke for casting |
| JP3339141B2 (en) * | 1993-11-05 | 2002-10-28 | 日立金属株式会社 | Ceramic stalk |
| JP4421506B2 (en) | 2005-03-30 | 2010-02-24 | ニチアス株式会社 | Intermediate Stoke Manufacturing Method |
-
2008
- 2008-07-11 JP JP2008181216A patent/JP5255934B2/en not_active Expired - Fee Related
-
2009
- 2009-06-12 EP EP09794295A patent/EP2181784A4/en not_active Withdrawn
- 2009-06-12 CN CN2009801003771A patent/CN101801563B/en not_active Expired - Fee Related
- 2009-06-12 US US12/677,065 patent/US20100326617A1/en not_active Abandoned
- 2009-06-12 WO PCT/JP2009/061155 patent/WO2010004848A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0576660U (en) * | 1992-03-24 | 1993-10-19 | 株式会社クボタ | Gate member of hot water supply passage in low pressure casting equipment |
| JP2565327Y2 (en) * | 1992-03-24 | 1998-03-18 | 株式会社クボタ | Gate member of hot water supply channel in low pressure casting machine |
| US5947180A (en) * | 1996-09-25 | 1999-09-07 | Bayer Aktiengesellschaft | Rising pipe for light metal melts |
| JP3549430B2 (en) * | 1999-03-23 | 2004-08-04 | ニチアス株式会社 | Low pressure casting equipment |
| JP2005296959A (en) * | 2004-04-06 | 2005-10-27 | Hitachi Metals Ltd | Stalk for low pressure casting |
| CN2822829Y (en) * | 2005-06-29 | 2006-10-04 | 冷星培 | Liquid-lifting tube of low pressure foundry machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101801563A (en) | 2010-08-11 |
| JP5255934B2 (en) | 2013-08-07 |
| WO2010004848A1 (en) | 2010-01-14 |
| US20100326617A1 (en) | 2010-12-30 |
| EP2181784A4 (en) | 2013-03-13 |
| JP2010017743A (en) | 2010-01-28 |
| EP2181784A1 (en) | 2010-05-05 |
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