CN1921969A - Process for producing cast item - Google Patents
Process for producing cast item Download PDFInfo
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- CN1921969A CN1921969A CNA2005800055501A CN200580005550A CN1921969A CN 1921969 A CN1921969 A CN 1921969A CN A2005800055501 A CNA2005800055501 A CN A2005800055501A CN 200580005550 A CN200580005550 A CN 200580005550A CN 1921969 A CN1921969 A CN 1921969A
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- mold
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- foundry goods
- aggregate
- manufacture method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
- B22C1/10—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives for influencing the hardening tendency of the mould material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
- B22C1/186—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents contaming ammonium or metal silicates, silica sols
- B22C1/188—Alkali metal silicates
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
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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
- B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
- B22D29/001—Removing cores
- B22D29/005—Removing cores by vibrating or hammering
Abstract
A process for producing a cast item with the use of a mold capable of easily crumbling. There is provided a process comprising the step of mixing together a granular aggregate, at least one type of water-soluble binder and water to thereby obtain an aggregate mixture and agitating the aggregate mixture to thereby effect foaming. This aggregate mixture is capable of suppressing undesirable gas generation at the time of mold formation or melt casting. Further, there is provided a process comprising the step of filling a space for mold formation with the foamed aggregate mixture and evaporating water from the charged aggregate mixture to thereby solidify the aggregate mixture, thus accomplishing mold formation; the step of assembling the mold with another mold into a final mold; the step of casting a melt in the final mold; the step of, during the period of cooling of cast item after melt solidification, removing the mold from the cast item; and the step of performing heat treatment of the cast item.
Description
Technical field
The present invention relates to a kind of manufacture method of foundry goods, particularly a kind of alternative existing joule is covered the special formula method, and the process for manufacturing cast article of easily mold being removed.
Background technology
Joule covers the manufacture method of special formula method as existing light alloy casting, and for example Japan speciallys permit the manufacture method that the disclosed No.5-261478 patent in the Room is put down in writing, and is well known.What the binding agent of this joule illiteracy special formula method adopted is phenolic resins.To be blown into also filling by the molding sand that this binding agent covered in the metal die that moulding is used, the binding agent that covers molding sand hardens by the temperature of metal die.
Yet cover in the special formula method at this kind joule, the core mold after the cast is harder, destroy this core mold and make it to remove from foundry goods, needs one a large impact power put on knockout course on the core mold.In order to carry out this knockout course, before being heat-treated, foundry goods needs foundry goods is cooled off fully.Even and give the above bigger impulsive force of 1Mpa that 10Hz is above, 10sec is above, also have only the knockout of 70%-80% degree.During the heat treatment and thereafter, the core mold after the destruction still has residual, as core sand grains residue and core fragment.Therefore must remove once more it.Even, to carry out roasting usually in order from foundry goods, to remove the core fragment and to regenerate.
And joule cover in the special formula method, when utilizing the temperature of metal die to make the binding agent sclerosis, supervened escaping gas.It is harmful that this kind escaping gas is attended by undesirable smell, particularly phenol, aldehyde, ammonia etc.
Therefore, need provide a kind of preferable replacement existing joule Meng Tefa, and easily mold be taken off, suppress the process for manufacturing cast article that escaping gas generates.
Summary of the invention
" particle shape aggregate " described in this specification be in silica sand, zircon sand, olivine ore in sand form, ferrochrome sand, aloxite, mullite sand, the artificial sand one or more constituted.
After " motlten metal solidify back " in this specification, the motlten metal that refers to solidify and harden.This temperature is different and different with the material of process and motlten metal.
" foundry goods cooling period " in this specification refer to foundry goods be cooled to than it is taken out from finish mold not the lower temperature of temperature can deformation extent the time during.For example say, aluminium alloy is carried out T6 when handling, " foundry goods cooling period " for being less than about 520 ℃ of temperature that but are higher than 70 ℃ of common chilling temperatures even 111 ℃ greatly, for example say with foundry goods be cooled to 300 ℃ during in.
The making method of a kind of foundry goods that is provided under a kind of situation according to the present invention, it comprises:
At least contain one type particle shape aggregate, contain one type water-soluble binder at least, and mix to form aggregate mixture, the process that this aggregate mixture is stirred and makes it to foam by adding water;
Aggregate mixture after the foaming is filled in the mold space design, aggregate is solidified the water evaporates in the aggregate mixture after filling, use above-mentioned aggregate mixture mold to be carried out the process of moulding;
At least one pair of the mold that uses that this particle shape aggregate moulding goes out is mounted to the process of the mold that completes on the mold of pairing;
To the above-mentioned process of finishing casting molten metal in the mold;
Above-mentioned motlten metal solidifies later foundry goods in cooling period, the process that above-mentioned mold is removed from above-mentioned foundry goods;
The process that above-mentioned foundry goods is heat-treated.
Using the mold of particle shape aggregate moulding is good with the core mold.In this case, the mold of pairing (main mold) can be that metal die also can be a sand mold.
" finishing mold " in this specification combined by main mold and at least one mold (core mold) of being gone out by the moulding of particle shape aggregate, be can be in it mold of casting molten metal.And the component parts of finishing mold is except that main mold and core mold, the parts of needs in the time of can also comprising other cast.
In manufacture method of the present invention, can comprise the removal process of particle shape aggregate, and the process that the particle shape aggregate that reclaims is regenerated.The particle shape aggregate that reclaims and regenerate reuses in being shaped to of mold good.
According to one embodiment of the invention, the recovery of particle shape aggregate and regenerative process are mechanical regeneration.
Foundry goods can also can be copper-alloy casting etc. for aluminium alloy castings, Mg alloy castings.
Heat treatment is that T6 or T7 processing all can.
One embodiment of the invention, mold are removed process for impose the process of vibration to above-mentioned mold.For example, to process that above-mentioned mold imposes vibration for back 5 minutes of cast and even 20 minutes with the interior time in below above-mentioned mold applies with 1Mpa, less than 30Hz, less than the process of the impulsive force of 30sec.
Process for manufacturing cast article under another situation of the present invention, it comprises:
At least contain one type particle shape aggregate, contain one type water-soluble binder at least, and mix to form aggregate mixture, the process that this aggregate mixture is stirred and makes it to foam by adding water;
This aggregate mixture is stirred and make it foaming, the aggregate mixture after the foaming is filled in the mold space design, and the water evaporates in the aggregate mixture after will filling makes aggregate curing, use above-mentioned particle shape aggregate the core mold to be carried out the process of moulding;
At least one above-mentioned core mold and metal mold are assembled into the process of finishing mold;
To the above-mentioned process of finishing the aluminium alloy of cast fusion in the mold;
Foundry goods after above-mentioned motlten metal solidifies is in cooling period, the process of from above-mentioned foundry goods above-mentioned core mold being removed;
Above-mentioned aluminium alloy castings is carried out T6 or the heat treated process of T7.
The water-soluble binder of above-mentioned at least a type is at least a in the polyvinyl alcohol or derivatives thereof, perhaps is at least a in the starch or derivatives thereof.
Description of drawings
Fig. 1 is the flow chart of the manufacture method of medium casting of the present invention.
Fig. 2 is for using joule flow chart of the manufacture method of the existing foundry goods that covers the special formula method.
Fig. 3 removes in mold and the heat treatment process chart of the temperature-time relationship of foundry goods for showing in the present embodiment.
Fig. 4 is the chart identical with Fig. 3, the corresponding use of its demonstration and Fig. 3 joule illiteracy special formula method
Process of the prior art.
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
Each process in the manufacture method of the foundry goods that the present invention is correlated with represented in summary among flow chart Fig. 1.
At first introduce the principle of process for manufacturing cast article of the present invention according to this flow chart.
In Fig. 1, with at least a particle shape aggregate, at least a water-soluble binder and water mix in the first step process, form aggregate mixture, make its foaming (first (modulation) process 1) by stirring.
In second step, use the aggregate mixture that foaming is good in the last process to fill the mold space design and make it curing, the mold that is made of particle shape aggregate is carried out moulding (second (moulding) process 2).
In the 3rd step, the moulding mold of at least more than one that moulding is good (core mold) is assembled on the pairing mold (main mold), the mold that completes (the 3rd (assembling) process 3).
In the 4th step, casting molten metal in this finishes mold (the 4th (cast) process 4).
In the 5th step, in the foundry goods cooling procedure after motlten metal solidifies, from this foundry goods, the core mold is pulled down and withdrawing pattern (the 5th (withdrawing pattern) process 5) from foundry goods.
In the 6th step,, produce the product of finishing of foundry goods by this foundry goods being heat-treated (the 6th (heat treatment) process 6).
Each process to Fig. 1 is carried out more detailed description.
Particle shape aggregate in first (modulation) process 1 uses at least a in silica sand, zircon sand, olivine ore in sand form, ferrochrome sand, aloxite, mullite sand, the artificial sand etc.
Water-soluble binder is good with water-soluble material at normal temperatures.Water-soluble at normal temperatures water-soluble binder need not heat and can form aggregate mixture.The time and the energy that are used for adhesive heating and particle shape aggregate have been saved.It is an advantage that this point is compared with existing joule of precoated sand manufacturing of covering in the special formula method.Though the water-soluble binder that uses among the present invention is with the polyvinyl alcohol or derivatives thereof, any one in the starch or derivatives thereof, perhaps these two kinds is good as water-soluble binder all, also is not limited only to this.Because this water-soluble binder volatilizees easily and can dissolve, and in process the 5th (molding) process 5 thereafter, is easy to from the foundry goods that motlten metal solidifies the core mold be removed.And the water-soluble binder that adds weight portion and be 0.1-0.5 in particle shape aggregate is thought good.
At least a water-soluble binder, at least a particle shape aggregate of this kind mixes the aggregate mixture that forms with water.By its stirring is made its foaming, this aggregate mixture is raw milk's oily.
In second (moulding) process 2, with the water evaporates that is filled in the aggregate mixture of space design, aggregate mixture is solidified, by the foaming process of a last process, the core mold (core mold) of the hollow that is made of particle shape aggregate is by moulding.The porosity of this hollow mold is 3%-60%.And the thickness of for example saying this hollow mold is under the situation of about 40mm, water-soluble binder be gathered in mould surface more than 50% and on the mould surface layer between the mould surface 10mm depths.That is to say that in the hollow mold that constitutes of aggregate mixture by foaming, because the moisture that contains in bubble that disperses in the aggregate mixture and the binding agent accumulates in mold center section, by the evaporation of this moisture, the packing density of the aggregate of mold center section reduces.
In the 3rd (assembling) process 3, at least one the core mold that is made of particle shape aggregate is assembled into main mold (pairing mold) and goes up and constitute and finish mold.Main mold can be a metal die, also can be the molding sand of for example being made up of particle shape aggregate.In the present embodiment, main mold uses metal die, adopts low pressure casting.Yet when using metal die, have more than in the method for the present invention and be limited to low pressure casting, also can adopt the processing modes such as gravity-assist pouring of back pressure casting, die casting, metal die.
In the 4th (cast) process 4, the motlten metal material of pouring into a mould in finishing mold is aluminium alloy in the present embodiment, but also is not limited only to this, and other light metal alloy or nonferrous alloy (for example saying magnesium alloy or copper alloy) also are fine.Make cylinder iron, cast steel or Ferrious material alloy also be fine.But be to use under the situation of Ferrious material, preferably be coated with one deck adhering mo(u)lding material on the core mold.
The core mold that will be in cooling period (time of cooling foundry goods is even make foundry goods reach the lower temperature of temperature when foundry goods being cooled to foundry goods taken out the degree that also can not be out of shape from finish mold) in the 5th (withdrawing pattern) process 5 takes out from foundry goods.Herein, the motlten metal material is " cooling period " under the situation of aluminium alloy in the 4th process 4, be meant foundry goods is cooled to than about 520 ℃ also low of the solid solution temperature of handling aluminum alloy T 6, but than common chilling temperature 70-111 ℃ high temperature, for example say 300 ℃ during.
In the 6th (heat treatment) process 6, motlten metal is under the situation of aluminium alloy, and heat treatment is heat treatments such as T6 processing, T7 processing.
As water miscible binding agent, by using the polyvinyl alcohol or derivatives thereof, perhaps starch or derivatives thereof, even in (modulation) process 1 that the particle shape aggregate mixture that contains binding agent is mediated and regulated and second (moulding) process 2 of the core mold being carried out moulding, can not produce yet, distribute the gas of unhappy smell.
And when the 4th (cast) process 4 of casting molten metal in the core mold, even motlten metal heats the escaping gas that also can not give out the gas of unhappy smell and do not wish to produce from the core mold to binding agent.
In the process for manufacturing cast article of the present invention shown in Figure 1, after the 6th (heat treatment) process 6, also can increase following process as required.I.e. the 7th (recovery) process 7 that the particle shape aggregate (core sand grains) and the core fragment of core mold reclaimed, the 8th (pulverizing) process 8 that the core fragment is pulverized, and reclaim the 9th (regeneration) process 9 that particle shape aggregate carries out mechanical type regeneration.The particle shape aggregate that reclaims back regeneration can reuse in the moulding of core mold.
With reference to the flow chart of figure 1, certain embodiments in the process for manufacturing cast article of the present invention is described.But material shown here only plays the effect of example, rather than for the present invention is limited.
In the present embodiment first (modulation) process 1 obtains two kinds of aggregate mixture A shown below and B.
Table 1 aggregate mixture A
Particle shape aggregate: silica sand (flattery sand) 100 weight portions
Water-soluble binder: polyvinyl alcohol (JP-05) is (by Japanese VAM﹠amp; Poval company makes) 0.8 weight portion
Crosslinking agent: BTCA (the new physics and chemistry manufacturing of BT-W Japan) 0.2 weight portion
Aggregate mixture 100 weight portions and water 6 weight portions that component shown in the table 1 is formed mix, stir and mediate, and make it foaming, can obtain the aggregate mixture A of raw milk's oily.
Table 2 aggregate mixture B
Particle shape aggregate: silica sand (flattery sand) 100 weight portions
Water-soluble binder: polyvinyl alcohol (JL-05) is (by Japanese VAM﹠amp; Poval company makes) 0.2 weight portion, starch (a day shallow lake chemistry is made) 1.0 weight portions and citric acid (Japan's chemistry is made) 0.4 weight portion
With dried aggregate mixture 100 weight portions that component shown in the table 2 is formed, water 6 weight portions mix, stir and mediate, and can obtain the aggregate mixture B of raw milk's oily.
Yet in first (modulation) process 1 in the present embodiment, necessary heater in the resin shell coated sand production process of existing joule Meng Tefa, and remove owing to heat the odor removal of the pernicious gas that resin generates and also become and there is no need.
Then, in the cavity that remains 250 ℃ metal die (figure do not show) (figure does not show), the aggregate mixture A and the B of two kinds of raw milk's oilies that filling first (modulation) process 1 of pressurizeing respectively obtains, the time that keeps 1 minute, moisture gasification in the aggregate mixture, after aggregate mixture solidifies, in the cavity of metal die, the core mold is taken out (second (moulding) process 2).
In order to be described further, this mold is assembled on other molds, forms to finish mold (the 3rd (assembling) process 3).In the 3rd (assembling) process 3 in the present embodiment, the core mold is assembled on the main metal die of low-pressure casting apparatus, forms and finish mold, carry out the preparation of cast.
Casting molten metal in this finishes mold (the 4th (cast) process 4).In the present embodiment, use the motlten metal (720 ℃ of temperature) of aluminium alloy AC4C to pour into a mould from the below of low-pressure casting apparatus (figure does not show).720 ℃ temperature of motlten metal, binding agent can volatilize or dissolve, and the core mold process of removing of next process is more prone to carry out.
In the cooling period of the foundry goods after motlten metal solidifies, the core mold is removed (the 5th (withdrawing pattern) process 5) from this foundry goods.Existing joule is covered in the special formula method, for the core mold being destroyed and removing from foundry goods, give a big impulsive force to mold after foundry goods fully cools off.In the method that the present invention uses, use destructive high core mold, make cooling with and subsequent large impact power all become and there is no need.The core mold uses simple method, and the mode of the slight vibration by as described below just can be removed.In in the present embodiment the 5th (withdrawing pattern) process 5, pour into a mould about 10 minutes after, the foundry goods of the motlten metal that solidifies takes out from finish mold.Afterwards, to imposing 20Hz, 20sec on the foundry goods under 350 ℃ of temperature, can realize knockout, thereby the core mold is removed fully less than the following impulsive force of, 1Mpa.By experiment, in the 5th (withdrawing pattern) process 5, pour into a mould back 5 minutes to 10 minutes with in the interior time, with 30Hz, 30sec less than, thereby the following impulsive force of 1Mpa also can realize knockout the core mold is removed fully.
After cast gate, the casting fin of this kind foundry goods removed, this foundry goods is heat-treated the 6th (heat treatment) process 6.In the present embodiment, removing of the cast gate of foundry goods and casting fin can be carried out before the heat treatment of foundry goods, also can carry out after the heat treatment of foundry goods.Even in the present embodiment, after the 6th (heat treatment) process 6, the core sand grains removal process 77, crushing process 88 and the mechanical type regenerative process 110 that increase as shown in Figure 1 also can.
Use in the casting method of metal die, only reclaim particle shape aggregate and core fragment from the core mold, the particle shape aggregate of recovery and regeneration can easily reuse the moulding in mold.
For the ease of comparing, shown Fig. 2 (prior art) covers the flow chart of special formula manufactured foundry goods for the joule that uses the above-mentioned Japan disclosed No.5-261478 patent in the special permission Room to put down in writing.
In the existing method shown in Figure 2, used the resin shell coated sand.Usually, the resin shell coated sand is that the foundry goods producer buys from other producers, and the manufacture process 11 of resin shell coated sand is that carry out in the place beyond the manufacturing field of foundry goods.Therefore, even the resin shell coated sand is reclaimed and regeneration, it also is very difficult reusing in the mold moulding with the present invention with contrasting.
By method shown in Figure 2, the resin shell coated sand that the foundry goods producer will buy from the market heats, and moulding goes out core mold 12, and core mold that moulding is good and the assembling of other molds are made and finished mold 13, pour into a mould 14 in this finishes mold.Pass through the knockout stove afterwards with core mold withdrawing pattern 15, treat that foundry goods fully cools off back 16, molding sand is removed 17 fully, this foundry goods is heat-treated 18 by the demoulding.Knockout course 17, heat treatment process 18 and the process 19 that from process thereafter, reclaims the core sand grains that includes the core fragment.In the core sand grains after the recovery, on the place that is different from this removal process 19, to the core fragment pulverize 20, roasting 21 and mechanical type regeneration 22.
Process for manufacturing cast article of the present invention is as shown in Figure 1 compared clearly with existing method shown in Figure 2, and the quantity of manufacture process has reduced.The 5th (mold is removed) process 5 in the method for example of the present invention (Fig. 1), the destruction of mold is easy to carry out, and by simple process, for example slight vibration promptly can realize the purpose of knockout.Yet in the existing method (Fig. 2) that is difficult to mold is destroyed, in order to remove mold, must through remove 15 by the knockout stove, the abundant cooling 16 of foundry goods, the demoulding 17 plurality of processes.And in the method for the present invention, there is not the necessity of carrying out roasting 21 in the reclaiming of existing method.Fig. 3 is the chart that concerns of temperature and time in the 5th (mold is removed) process 5 and the 6th (heat treatment) process 6 in the demonstration embodiment of the invention.For relatively, be provided with Fig. 4 similar (prior art) to Fig. 3, its show with the inventive method in mold remove and the chart of the prior art that heat treatment process is relative.
In the prior art, above-mentioned foundry goods is fully cooled off (process 16 of Fig. 2) afterwards, realize knockout (process 17 of Fig. 2), handle in order to carry out T6 afterwards, heat up once more by the demoulding.Therefore, not only need cool time shown in Figure 4, in order to heat-treat, heat time heating time and energy also are necessary.
In embodiments of the invention shown in Figure 3, after pouring into a mould in the time of 720 ℃, mold is removed in process 55 processes, and the foundry goods after motlten metal solidifies takes out the core mold after taking out from foundry goods.There is no need afterwards fully, directly to carry out solution treatment (heat treatment) and get final product with giving bigger impact after the cooling of foundry goods goods for the core mold is removed.Therefore, not only shorten cool time, be used for heat treated heat time heating time again, also saved the energy that consumes simultaneously, reduced the quantity of process.Foundry goods not necessarily will be cooled to 100 ℃, and being cooled to 300 ℃ also has the effect of saving energy.
The foregoing description just carries out illustration to the present invention, rather than in order to limit, and those skilled in the art can do various changes and distortion to it under the situation of purpose that does not break away from the claim to be put down in writing and main points.
Claims (15)
1, a kind of manufacture method of foundry goods is characterized in that, it comprises:
At least contain one type particle shape aggregate, contain one type water-soluble binder at least, and mix to form aggregate mixture, the process that this aggregate mixture is stirred and makes it to foam by adding water;
Aggregate mixture after the foaming is filled in the mold space design, aggregate is solidified the water evaporates in the aggregate mixture after filling, use above-mentioned particle shape aggregate mold to be carried out the process of moulding;
At least one the mold that uses that this particle shape aggregate moulding goes out is mounted on the mold of pairing and makes the process of finishing mold;
To the above-mentioned process of finishing casting molten metal in the mold;
Solidify later foundry goods in cooling period at above-mentioned motlten metal, the process that above-mentioned mold is removed from above-mentioned foundry goods;
The process that above-mentioned foundry goods is heat-treated.
2, the manufacture method of foundry goods according to claim 1 is characterized in that, the mold of at least one that is gone out by the moulding of above-mentioned particle shape aggregate is the core mold, and above-mentioned pairing mold is main mold.
3, the manufacture method of foundry goods according to claim 2 is characterized in that, above-mentioned main mold is a metal mold.
4, the manufacture method of foundry goods according to claim 2 is characterized in that, above-mentioned main mold is a sand mold.
5, according to the manufacture method of any described foundry goods of claim 1-4, it is characterized in that, also include the process that above-mentioned particle shape aggregate reclaims and will reclaim after the particle shape aggregate process of regenerating.
6, the manufacture method of foundry goods according to claim 5 is characterized in that, the particle shape aggregate of above-mentioned recovery and regeneration reuses in the mold moulding.
According to the manufacture method of claim 5 or 6 described foundry goods, it is characterized in that 7, the reclaiming process of above-mentioned particle shape aggregate is mechanical regeneration.
According to the manufacture method of any described foundry goods of claim 1-7, it is characterized in that 8, above-mentioned foundry goods is aluminium alloy castings or Mg alloy castings.
9, the manufacture method of foundry goods according to claim 8 is characterized in that, above-mentioned heat treatment is that T6 handles or T7 handles.
According to the manufacture method of any described foundry goods of claim 1-7, it is characterized in that 10, above-mentioned foundry goods is the foundry goods of cast iron or cast steel or Ferrious material alloy.
According to the manufacture method of any described foundry goods of claim 1-7, it is characterized in that 11, above-mentioned foundry goods is a copper-alloy casting.
According to the manufacture method of any described foundry goods of claim 1-11, it is characterized in that 12, above-mentioned mold is removed process for impose the process of vibration to above-mentioned mold.
13, the manufacture method of foundry goods according to claim 12, it is characterized in that, to process that above-mentioned mold imposes vibration for back 5 minutes of cast and even 20 minutes with the interior time in below above-mentioned mold applies with 1Mpa less than 30Hz, less than the process of the impulsive force of 30sec.
14, a kind of manufacture method of foundry goods is characterized in that, it comprises:
At least contain one type particle shape aggregate, contain one type water-soluble binder at least, and mix to form aggregate mixture, the process that this aggregate mixture is stirred and makes it to foam by adding water;
This aggregate mixture is stirred and make it foaming, the aggregate mixture after the foaming is filled in the mold space design, and the water evaporates in the aggregate mixture after will filling makes aggregate curing, use above-mentioned particle shape aggregate the core mold to be carried out the process of moulding;
At least one above-mentioned core mold and metal mold are assembled into the process of finishing mold;
To the above-mentioned process of finishing the motlten metal of cast aluminum alloy in the mold;
Foundry goods after above-mentioned motlten metal solidifies is in cooling period, the process of from above-mentioned foundry goods above-mentioned core mold being removed;
Above-mentioned aluminium alloy castings is carried out T6 or the heat treated process of T7.
According to the manufacture method of any described foundry goods of claim 1-14, it is characterized in that 15, the water-soluble binder of above-mentioned at least a type is at least a in the polyvinyl alcohol or derivatives thereof, perhaps is at least a in the starch or derivatives thereof.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004049428 | 2004-02-25 | ||
| JP049428/2004 | 2004-02-25 | ||
| PCT/JP2005/002893 WO2005080023A1 (en) | 2004-02-25 | 2005-02-23 | Process for producing cast item |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1921969A true CN1921969A (en) | 2007-02-28 |
| CN1921969B CN1921969B (en) | 2015-03-18 |
Family
ID=34879546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200580005550.1A Active CN1921969B (en) | 2004-02-25 | 2005-02-23 | Process for producing cast item |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20070137825A1 (en) |
| EP (1) | EP1721689B1 (en) |
| JP (1) | JP3948490B2 (en) |
| CN (1) | CN1921969B (en) |
| AT (1) | ATE509714T1 (en) |
| TW (1) | TW200533436A (en) |
| WO (1) | WO2005080023A1 (en) |
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| CN101956121A (en) * | 2010-10-13 | 2011-01-26 | 江苏万恒铸业有限公司 | Manufacture process of high-pressure hydro-stainless steel valve casting |
| CN103822938A (en) * | 2012-11-15 | 2014-05-28 | 贺利氏电子耐特国际股份公司 | Detection device for molten metal |
| CN104812509A (en) * | 2012-11-19 | 2015-07-29 | 新东工业株式会社 | Sand for casting mold, manufacturing method for sand casting-mold, and core for metal casting |
| CN109641265A (en) * | 2016-08-31 | 2019-04-16 | 旭有机材株式会社 | The manufacturing method of mold |
| TWI789125B (en) * | 2021-11-19 | 2023-01-01 | 財團法人金屬工業研究發展中心 | Low pressure casting metal foaming system and intermediate foaming device |
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| DE102007042506B4 (en) * | 2007-09-07 | 2010-06-17 | Norbert Gatzweiler | Process for quenching aluminum components |
| JP5024733B2 (en) * | 2008-10-15 | 2012-09-12 | 新東工業株式会社 | Sand removal method for cast sand cores |
| CN103601465B (en) * | 2013-11-06 | 2015-04-29 | 安庆帝雅艺术品有限公司 | Bronze ware filling material |
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| AT520370B1 (en) | 2017-09-07 | 2020-08-15 | Fill Gmbh | Process for the production of a cast workpiece |
| DE102017131255A1 (en) | 2017-12-22 | 2019-06-27 | HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung | A method of making a metallic casting or a cured molding using aliphatic polymers comprising hydroxy groups |
| JP7309405B2 (en) * | 2018-03-30 | 2023-07-18 | 株式会社巴川製紙所 | Manufacturing method of sand mold material for mold, core for mold and sand mold material |
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| CH470922A (en) * | 1965-07-23 | 1969-04-15 | Tsnii T I Mash | Liquid, self-hardening mixture for casting molds and mold cores |
| GB1193952A (en) * | 1966-06-02 | 1970-06-03 | British Cast Iron Res Ass | Foundry Moulding Materials |
| FR2096863B1 (en) * | 1970-07-07 | 1973-02-02 | Ctre Tech Ind Fonderie | |
| NO142944L (en) * | 1975-08-14 | 1900-01-01 | ||
| JPS57115942A (en) * | 1981-01-06 | 1982-07-19 | Sintokogio Ltd | Method for forming mold |
| JPS5832540A (en) * | 1981-08-21 | 1983-02-25 | Sintokogio Ltd | Production of core for die casting |
| JPH05261478A (en) * | 1992-03-19 | 1993-10-12 | Ube Ind Ltd | Producltion of collapsible sand core |
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2005
- 2005-02-23 JP JP2006510291A patent/JP3948490B2/en active Active
- 2005-02-23 AT AT05710586T patent/ATE509714T1/en not_active IP Right Cessation
- 2005-02-23 CN CN200580005550.1A patent/CN1921969B/en active Active
- 2005-02-23 WO PCT/JP2005/002893 patent/WO2005080023A1/en active Application Filing
- 2005-02-23 EP EP05710586A patent/EP1721689B1/en active Active
- 2005-02-23 TW TW094105370A patent/TW200533436A/en unknown
- 2005-02-23 US US10/590,354 patent/US20070137825A1/en not_active Abandoned
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| CN101956121A (en) * | 2010-10-13 | 2011-01-26 | 江苏万恒铸业有限公司 | Manufacture process of high-pressure hydro-stainless steel valve casting |
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| US10371686B2 (en) | 2012-11-15 | 2019-08-06 | Heraeus EIectro-Nite International N.V. | Detection device for molten metal |
| CN104812509A (en) * | 2012-11-19 | 2015-07-29 | 新东工业株式会社 | Sand for casting mold, manufacturing method for sand casting-mold, and core for metal casting |
| US9789533B2 (en) | 2012-11-19 | 2017-10-17 | Sintokogio, Ltd. | Sand for casting mold, manufacturing method for sand casting-mold, and core for metal casting |
| CN109641265A (en) * | 2016-08-31 | 2019-04-16 | 旭有机材株式会社 | The manufacturing method of mold |
| TWI789125B (en) * | 2021-11-19 | 2023-01-01 | 財團法人金屬工業研究發展中心 | Low pressure casting metal foaming system and intermediate foaming device |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE509714T1 (en) | 2011-06-15 |
| EP1721689A1 (en) | 2006-11-15 |
| EP1721689A4 (en) | 2007-05-02 |
| JPWO2005080023A1 (en) | 2007-10-25 |
| EP1721689B1 (en) | 2011-05-18 |
| US20070137825A1 (en) | 2007-06-21 |
| CN1921969B (en) | 2015-03-18 |
| WO2005080023A1 (en) | 2005-09-01 |
| JP3948490B2 (en) | 2007-07-25 |
| TW200533436A (en) | 2005-10-16 |
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