CN1921969B - Process for producing cast item - Google Patents
Process for producing cast item Download PDFInfo
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- CN1921969B CN1921969B CN200580005550.1A CN200580005550A CN1921969B CN 1921969 B CN1921969 B CN 1921969B CN 200580005550 A CN200580005550 A CN 200580005550A CN 1921969 B CN1921969 B CN 1921969B
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Mold Materials And Core Materials (AREA)
- Glass Compositions (AREA)
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 one substitutes existing joule and covers special formula method, and easily by the process for manufacturing cast article of mold removing.
Background technology
Joule covers the manufacture method of special formula method as existing light alloy casting, and such as, manufacture method disclosed in the Japanese Patent Room described in No.5-261478 patent, is well known.What this joule covered the binding agent employing of special formula method is phenolic resins.By the molding sand that covers by this binding agent be blown into and be filled in the metal die of moulding, the binding agent covering molding sand is hardened by the temperature of metal die.
But cover in special formula method at this kind of joule, the core mold after cast is harder, destroy this core mold and make it to remove from foundry goods, needs a knockout course large impact power put on core mold.In order to carry out this knockout course, need to cool fully foundry goods before heat-treating foundry goods.Even and give the larger impulsive force of more than 1Mpa of more than 10Hz, more than 10sec, also only have the knockout of 70%-80% degree.Heat Treatment and thereafter, the core mold after destruction still has residual, as core sand grains residue and core fragment.Therefore again must remove it.Even in order to remove core fragment and regenerate from foundry goods, usually roasting will be carried out.
And joule covers in special formula method, when utilizing the temperature of metal die to make binding agent harden, has supervened escaping gas.It is harmful that this kind of escaping gas is attended by undesirable smell, particularly phenol, aldehyde, ammonia etc.
Therefore, need to provide one preferably to replace existing joule Meng Tefa, and easily mold is taken off, suppress the process for manufacturing cast article that escaping gas generates.
Summary of the invention
" particle shape aggregate " described in this description is formed for one or more in silica sand, zircon sand, olivin sand, ferrochrome sand, aloxite, mullite sand, artificial sand.
" motlten metal solidify after " in this description, the motlten metal that refers to solidifies and after hardening.This temperature is different with the material of motlten metal and different with process.
" foundry goods cooling period " in this description refer to foundry goods is cooled to than by its from complete mold take out and can not deformation extent time the lower temperature of temperature during.Such as say, when carrying out T6 process to aluminium alloy, " foundry goods cooling period " for be less than about 520 DEG C but higher than common chilling temperature 70 DEG C even temperature of 111 DEG C greatly, such as, is said in during foundry goods is cooled to 300 DEG C.
According to the making method of a kind of foundry goods provided in a kind of situation of the present invention, it comprises:
At least containing the particle shape aggregate of a type, the water-soluble binder at least containing a type, and be mixed to form aggregate mixture by adding water, stirs this aggregate mixture and makes it the process of foaming;
Aggregate mixture after foaming is filled in casting mold space, aggregate is solidified the moisture evaporation in the aggregate mixture after filling, use above-mentioned aggregate mixture to carry out the process of moulding to mold;
The mold of at least one pair of using this aggregate mixture moulding to go out is mounted to the process of the mold that completes on the mold of pairing;
To the above-mentioned process completing casting molten metal in mold;
Above-mentioned motlten metal solidifies in later foundry goods cooling period, by the process that above-mentioned mold removes from above-mentioned foundry goods;
To the process that above-mentioned foundry goods is heat-treated.
The mold using aggregate mixture moulding is good with core mold.In this case, the mold (main mold) of pairing can be metal die also can be sand mold.
" completing mold " in this description is combined by main mold and at least one mold (core mold) gone out by aggregate mixture moulding, is can to the mold of casting molten metal in it.And the component parts completing mold is except main mold and core mold, the parts of needs during other cast can also be comprised.
In manufacture method of the present invention, the removal process of particle shape aggregate can be comprised, and the particle shape aggregate of recovery be carried out the process that regenerates.To reclaim and the particle shape aggregate regenerated 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 be aluminium alloy castings, Mg alloy castings also can be copper-alloy casting etc.
Heat treatment is that T6 or T7 process all can.
One embodiment of the invention, mold removing process is the process imposing vibration to above-mentioned mold.Such as, the process imposing vibration to above-mentioned mold is apply with below 1Mpa, less than 30Hz, process less than the impulsive force of 30sec to above-mentioned mold in the time after being cast within 5 minutes and even 20 minutes.
Process for manufacturing cast article in another situation of the present invention, it comprises:
At least containing the particle shape aggregate of a type, the water-soluble binder at least containing a type, and be mixed to form aggregate mixture by adding water, stirs this aggregate mixture and makes it the process of foaming;
This aggregate mixture stirred and makes it foaming, the aggregate mixture after foaming is filled in casting mold space, and aggregate being solidified the moisture evaporation in the aggregate mixture after filling, using above-mentioned aggregate mixture to carry out the process of moulding to core mold;
At least one above-mentioned core mold and metal mold are carried out the process being assembled into mold;
To the above-mentioned process completing in mold the aluminium alloy pouring into a mould melting;
In foundry goods cooling period after above-mentioned motlten metal solidifies, by the process of above-mentioned core mold removing from above-mentioned foundry goods;
The heat treated process of T6 or T7 is carried out to above-mentioned aluminium alloy castings.
The water-soluble binder of above-mentioned at least one type is at least one in polyvinyl alcohol or derivatives thereof, or is at least one in starch or derivatives thereof.
Accompanying drawing explanation
Fig. 1 is the flow chart of the manufacture method of medium casting of the present invention.
Fig. 2 is the flow chart using joule to cover the manufacture method of the existing foundry goods of special formula method.
Fig. 3 removes in mold and heat treatment process for showing in the present embodiment, the chart of the temperature-time relationship of foundry goods.
Fig. 4 is the chart identical with Fig. 3, the process of the prior art of the use joule illiteracy special formula method that its display is corresponding with Fig. 3.
Detailed description of the invention
Present pre-ferred embodiments is provided, to describe technical scheme of the present invention in detail below in conjunction with accompanying drawing.
The each process in the manufacture method of the foundry goods that the present invention is correlated with is illustrate schematically in flow chart Fig. 1.
First the principle of process for manufacturing cast article of the present invention is introduced according to this flow chart.
In FIG, by least one particle shape aggregate in first step process, at least one water-soluble binder and aqueous phase mixing, form aggregate mixture, makes its foam (first (modulation) process 1) by stirring.
In second step, use the aggregate mixture foamed in a process fill casting mold space and make it solidification, moulding (second (moulding) process 2) is carried out to the mold be made up of particle shape aggregate.
In the third step, at least more than one moulding mold (core mold) good for moulding is assembled in pairing mold (main mold), the mold that completes (the 3rd (assembling) process 3).
In the 4th step, complete casting molten metal in mold (the 4th (cast) process 4) to this.
In the 5th step, in the foundry goods cooling procedure after motlten metal solidifies, from this foundry goods, core mold is pulled down and withdrawing pattern (the 5th (withdrawing pattern) process 5) from foundry goods.
In the 6th step, by heat-treating this foundry goods (the 6th (heat treatment) process 6), produce the finished goods of foundry goods.
Each process of Fig. 1 is further described in more detail.
Particle shape aggregate in first (modulation) process 1, uses at least one in silica sand, zircon sand, olivin sand, ferrochrome sand, aloxite, mullite sand, artificial sand etc.
Water-soluble binder is good with water-soluble material at normal temperatures.Water-soluble water-soluble binder at normal temperatures, need not heat and can form aggregate mixture.Save the time for adhesive heating and particle shape aggregate and energy.It is an advantage that this point is compared with the precoated sand manufacture of covering in special formula method of existing joule.Although the water-soluble binder used in the present invention is with polyvinyl alcohol or derivatives thereof, any one in starch or derivatives thereof, or these two kinds is all good as water-soluble binder, is also not limited only to this.Easily volatilize due to this water-soluble binder and can dissolve, in process thereafter the 5th (molding) process 5, being easy to from the foundry goods that motlten metal solidifies, core mold be removed.And adding weight portion in particle shape aggregate is that the water-soluble binder of 0.1-0.5 is thought good.
The aggregate mixture that the water-soluble binder of this kind of at least one, the particle shape aggregate of at least one and water are mixed to form.By making it foam to its stirring, this aggregate mixture is raw milk's oily.
In second (moulding) process 2, by the moisture evaporation be filled in the aggregate mixture of space design, aggregate mixture is solidified, and by the foaming process of a upper process, the core mold (core mold) of the hollow be made up of particle shape aggregate is by moulding.The porosity of this hollow mold is 3%-60%.Further, such as, when the thickness saying this hollow mold is about 40mm, more than 50% of water-soluble binder is gathered in mould surface and apart from the mould surface layer between mould surface 10mm depths.That is, in the hollow mold be made up of the aggregate mixture foamed, due to the moisture accumulation heart portion in the mould contained in the bubble that disperses in aggregate mixture and binding agent, by the evaporation of this moisture, the packing density of the aggregate of mold center section reduces.
In 3rd (assembling) process 3, at least one the core mold be made up of particle shape aggregate is assembled into main mold (pairing mold) and has above formed mold.Main mold can be metal die, also can be the molding sand be such as made up of particle shape aggregate.In the present embodiment, main mold uses metal die, adopts low pressure casting.But when using metal die, having more than in method of the present invention and being limited to low pressure casting, also can adopt the processing mode such as gravity-assist pouring of back pressure casting, die casting, metal die.
In 4th (cast) process 4, be aluminium alloy in the present embodiment to completing the motlten metal material of pouring into a mould in mold, but be also not limited only to this, other light metal alloy or nonferrous alloy (such as saying magnesium alloy or copper alloy) are also fine.Make cylinder iron, cast steel or Ferrious material alloy be also fine.But when using Ferrious material, core mold is preferably coated with one deck adhering mo(u)lding material.
The core mold that will be in cooling period (time of cooling foundry goods, even if make foundry goods reach than making foundry goods be cooled to foundry goods from the lower temperature of temperature when completing mold the degree of taking out and also can not be out of shape) in the 5th (withdrawing pattern) process 5 takes out from foundry goods.Herein, " cooling period " when in 4th process 4, motlten metal material is aluminium alloy, refer to and be cooled to the solid solution temperature about 520 DEG C than processing aluminum alloy T 6 also low on foundry goods, but than common chilling temperature 70-111 DEG C high temperature, such as, say during 300 DEG C.
In 6th (heat treatment) process 6, when motlten metal is aluminium alloy, heat treatment is the heat treatment such as T6 process, T7 process.
As water miscible binding agent, by using polyvinyl alcohol or derivatives thereof, or starch or derivatives thereof, even mediating the particle shape aggregate mixture containing binding agent and (modulation) process 1 regulated and carry out in second (moulding) process 2 of moulding to core mold, also can not produce, distribute the gas of unhappy smell.
And when to the 4th (cast) process 4 of casting molten metal in core mold, even if motlten metal heats the gas that also can not give out unhappy smell from core mold to binding agent and does not wish the escaping gas that produces.
In process for manufacturing cast article of the present invention shown in Fig. 1, after the 6th (heat treatment) process 6, also can increase following process as required.Namely to the 7th (recovery) process 7 that particle shape aggregate (core sand grains) and the core fragment of core mold reclaim, to the 8th (pulverizing) process 8 that core fragment is pulverized, and reclaim the 9th (regeneration) process 9 that particle shape aggregate carries out mechanical type regeneration.After reclaiming, the particle shape aggregate of regeneration can reuse the moulding in core mold.
With reference to the flow chart of figure 1, embodiment specific in process for manufacturing cast article of the present invention is described.But material shown here only plays the effect of example, instead of in order to be construed as limiting the present invention.
In the present embodiment first (modulation) process 1 obtains two kinds of aggregate mixture A and B shown below.
Table 1 aggregate mixture A
Particle shape aggregate: silica sand (flattery sand) 100 weight portions
Water-soluble binder: polyvinyl alcohol (JP-05) (being manufactured by Japanese VAM & Poval company) 0.8 weight portion
Crosslinking agent: BTCA (the new physics and chemistry manufacture of BT-W Japan) 0.2 weight portion
Aggregate mixture 100 weight portion form component shown in table 1 and water 6 weight portion 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) (being manufactured by Japanese VAM & Poval company) 0.2 weight portion, starch (chemistry manufacture of forming sediment day) 1.0 weight portions and citric acid (Japan's chemistry manufactures) 0.4 weight portion
By dried aggregate mixture 100 weight portion that component shown in table 2 forms, water 6 weight portion mixes, stirs and mediate, and can obtain the aggregate mixture B of raw milk's oily.
But in first (modulation) process 1 in the present embodiment, heater necessary in the resin shell coated sand production process of existing joule Meng Tefa, and remove the odor removal of pernicious gas generated due to heated resin and also become and there is no need.
Then, to in the cavity (not shown) of metal die (not shown) remaining 250 DEG C, aggregate mixture A and B of two kinds of raw milk's oilies that filling first (modulation) process 1 of pressurizeing respectively obtains, keep the time of 1 minute, moisture vaporization in aggregate mixture, after aggregate mixture solidification, in the cavity of metal die, core mold is taken out (second (moulding) process 2).
In order to be described further, this mold is assembled on other molds, has formed mold (the 3rd (assembling) process 3).In the 3rd (assembling) process 3 in the present embodiment, core mold is assembled on the main metal die of low-pressure casting apparatus, has formed mold, carry out the preparation of cast.
Casting molten metal in mold (the 4th (cast) process 4) is completed to this.In the present embodiment, the motlten metal (temperature 720 DEG C) of aluminium alloy AC4C is used to pour into a mould from the below of low-pressure casting apparatus (not shown).The temperature of 720 DEG C of motlten metal, binding agent can volatilize or dissolve, and the core mold removing process of next process is more prone to carry out.
In the cooling period of the foundry goods after motlten metal solidifies, core mold is removed from this foundry goods (the 5th (withdrawing pattern) process 5).Existing joule covers in special formula method, in order to be destroyed by core mold and remove from foundry goods, after foundry goods fully cools, will give a large impulsive force to mold.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.Core mold uses simple method, just can be removed by the mode of slight vibration as described below.In in the present embodiment the 5th (withdrawing pattern) process 5, after pouring into a mould about 10 minutes, the foundry goods of the motlten metal solidified takes out from completing mold.Afterwards, to the foundry goods at 350 DEG C of temperature imposes 20Hz, 20sec less than, the impulsive force of below 1Mpa, can realize knockout, thus is removed completely by core mold.By experiment, in the 5th (withdrawing pattern) process 5, pour into a mould in the time within latter 5 minutes to 10 minutes, with 30Hz, 30sec less than, the impulsive force of below 1Mpa also can realize knockout thus be removed completely by core mold.
After the cast gate of this kind of foundry goods, casting fin removing, the 6th (heat treatment) process 6 is heat-treated to this foundry goods.In the present embodiment, the cast gate of foundry goods and the removing of 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 are also passable.
Use in the casting method of metal die, only from core mold, reclaim particle shape aggregate and core fragment, to reclaim and the particle shape aggregate regenerated easily can reuse moulding in mold.
For the ease of comparing, the flow chart of shown Fig. 2 (prior art) for using the joule of No.5-261478 patent notes disclosed in above-mentioned Japanese Patent Room illiteracy special formula legal system to make foundry goods.
In existing method shown in Fig. 2, employ resin shell coated sand.Usually, to be foundry goods producer buy from other producers resin shell coated sand, and the manufacture process 11 of resin shell coated sand is that the place beyond the manufacturing field of foundry goods is carried out.Therefore, even if reclaim and regeneration resin shell coated sand, it is also very difficult in contradistinction to reusing in casting mold with the present invention.
By the method shown in Fig. 2, the resin shell coated sand bought from the market heats by foundry goods producer, and moulding goes out core mold 12, and the core mold that moulding is good and other molds are assembled, and have manufactured mold 13, completes cast 14 in mold to this.Afterwards by knockout stove by core mold withdrawing pattern 15, after foundry goods fully cools 16, by the demoulding, molding sand is removed 17 completely, 18 is heat-treated to this foundry goods.Knockout course 17, heat treatment process 18 and reclaim the process 19 of the core sand grains of core fragment of including from process thereafter.In core sand grains after recovery, on the place being different from this removal process 19, pulverizing 20, roasting 21 and mechanical type regeneration 22 are carried out to core fragment.
Process for manufacturing cast article of the present invention as shown in Figure 1 compared with the existing method shown in Fig. 2 clearly the quantity of manufacture process decrease.Such as, in method of the present invention (Fig. 1) the 5th (mold removing) process 5, the destruction of mold is easy to carry out, and by simple process, namely such as slight vibration can realize the object of knockout.But be difficult in the existing method (Fig. 2) that mold is destroyed, and in order to remove mold, must through by knockout stove removing 15, the abundant cooling 16 of foundry goods, the several process of the demoulding 17.And in method of the present invention, without the necessity of carrying out roasting 21 in existing methodical reclaiming.Fig. 3 is the relation chart of temperature and time in the 5th (mold removing) process 5 in the display embodiment of the present invention and the 6th (heat treatment) process 6.In order to compare, be provided with Fig. 4 (prior art) similar to Fig. 3, it shows the chart with the prior art that mold in the inventive method removes and heat treatment process is relative.
In the prior art, after above-mentioned foundry goods fully being cooled (process 16 of Fig. 2), realizing knockout (process 17 of Fig. 2) by the demoulding, afterwards in order to carry out T6 process, again heating up.Therefore, not only need the cool time shown in Fig. 4, in order to heat-treat, heat time and energy are also necessary.
In the embodiment of the present in-vention illustrated in figure 3, after pouring into a mould when 720 DEG C, in mold removing process 55 process, core mold takes out after taking out by the foundry goods after motlten metal solidifies from foundry goods.There is no need afterwards, in order to core mold is removed, to give larger impact after fully being cooled by cast article, directly carry out solution treatment (heat treatment).Therefore, not only shorten cool time, for heat treated rethermalization time, also save the energy of consumption simultaneously, decrease the quantity of process.Foundry goods not necessarily will be cooled to 100 DEG C, is cooled to 300 DEG C also to have the effect of saving energy.
Above-described embodiment just illustrates the present invention, instead of in order to limit, those skilled in the art, when not departing from object described in claim and main points, can do various change and distortion to it.
Claims (12)
1. a manufacture method for foundry goods, is characterized in that, it comprises:
Particle shape aggregate at least containing a type, water-soluble binder at least containing a type, and be mixed to form aggregate mixture by adding water, this aggregate mixture is stirred and make it foam process, wherein, described water-soluble binder is starch, and the consumption of described water-soluble binder is the 0.1-5.0wt% of particle shape aggregate;
Aggregate mixture after foaming is filled in casting mold space, aggregate is solidified the moisture evaporation in the aggregate mixture after filling, use above-mentioned aggregate mixture to carry out the process of moulding to mold, wherein make the moisture accumulation heart portion in the mould contained in the bubble that disperses in aggregate mixture and binding agent;
The process of mold made by the mold being mounted to pairing by using the mold of at least one that goes out of this aggregate mixture moulding;
To the above-mentioned process completing casting molten metal in mold;
Solidify in later foundry goods cooling period at above-mentioned motlten metal, by the process that above-mentioned mold removes from above-mentioned foundry goods, wherein, above-mentioned mold removing process is the process imposing vibration to above-mentioned mold, and the process imposing vibration to above-mentioned mold is apply with below 1Mpa less than 30Hz, process less than the impulsive force of 30sec to above-mentioned mold in the time after being cast within 5 minutes and even 20 minutes;
To 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 gone out by above-mentioned aggregate mixture moulding is 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 metal mold.
4. the manufacture method of foundry goods according to claim 2, is characterized in that, above-mentioned main mold is sand mold.
5. the manufacture method of foundry goods according to claim 1, is characterized in that, also includes the process that process and being carried out by the particle shape aggregate after this recovery that above-mentioned particle shape aggregate reclaims regenerates.
6. the manufacture method of foundry goods according to claim 5, is characterized in that, above-mentioned recovery and regeneration particle shape aggregate reuse in casting mold.
7. the manufacture method of the foundry goods according to claim 5 or 6, is characterized in that, the reclaiming process of above-mentioned particle shape aggregate is mechanical regeneration.
8. the manufacture method of foundry goods according to claim 1, is characterized in that, 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 T6 process or T7 process.
10. the manufacture method of foundry goods according to claim 1, is characterized in that, above-mentioned foundry goods is the foundry goods of cast iron or cast steel or Ferrious material alloy.
The manufacture method of 11. foundry goods according to claim 1, is characterized in that, above-mentioned foundry goods is copper-alloy casting.
The manufacture method of 12. 1 kinds of foundry goods, is characterized in that, it comprises:
Particle shape aggregate at least containing a type, water-soluble binder at least containing a type, and be mixed to form aggregate mixture by adding water, this aggregate mixture is stirred and make it foam process, wherein, described water-soluble binder is starch, and the consumption of described water-soluble binder is the 0.1-5.0wt% of particle shape aggregate;
This aggregate mixture is stirred and makes it foaming, aggregate mixture after foaming is filled in casting mold space, and aggregate is solidified the moisture evaporation in the aggregate mixture after filling, above-mentioned aggregate mixture is used to carry out the process of moulding to core mold, wherein, the moisture accumulation heart portion in the mould contained in the bubble that disperses in aggregate mixture and binding agent is made;
At least one above-mentioned core mold and metal mold are carried out the process being assembled into mold;
To the above-mentioned process completing the motlten metal of cast aluminum alloy in mold;
In foundry goods cooling period after above-mentioned motlten metal solidifies, by the process of above-mentioned core mold removing from above-mentioned foundry goods, wherein, above-mentioned mold removing process is the process imposing vibration to above-mentioned mold, and the process imposing vibration to above-mentioned mold is apply with below 1Mpa less than 30Hz, process less than the impulsive force of 30sec to above-mentioned mold in the time after being cast within 5 minutes and even 20 minutes;
The heat treated process of T6 or T7 is carried out to above-mentioned aluminium alloy castings.
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 CN1921969A (en) | 2007-02-28 |
| CN1921969B true CN1921969B (en) | 2015-03-18 |
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| 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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| US11501911B2 (en) * | 2007-04-05 | 2022-11-15 | Grant A. MacLennan | Method of forming a cast inductor apparatus |
| 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 |
| CN101956121B (en) * | 2010-10-13 | 2013-03-13 | 江苏万恒铸业有限公司 | Manufacture process of high-pressure hydro-stainless steel valve casting |
| US10371686B2 (en) * | 2012-11-15 | 2019-08-06 | Heraeus EIectro-Nite International N.V. | Detection device for molten metal |
| JP5972393B2 (en) * | 2012-11-19 | 2016-08-17 | 新東工業株式会社 | Mold sand and molding method of sand mold |
| CN103601465B (en) * | 2013-11-06 | 2015-04-29 | 安庆帝雅艺术品有限公司 | Bronze ware filling material |
| AT517384A1 (en) * | 2015-06-15 | 2017-01-15 | Fill Gmbh | Method for producing a cast workpiece |
| MX2019002260A (en) * | 2016-08-31 | 2019-07-04 | Asahi Yukizai Corp | Casting mold manufacturing method. |
| 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 |
| 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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2005
- 2005-02-23 TW TW094105370A patent/TW200533436A/en unknown
- 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 US US10/590,354 patent/US20070137825A1/en not_active Abandoned
- 2005-02-23 JP JP2006510291A patent/JP3948490B2/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
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|---|---|
| TW200533436A (en) | 2005-10-16 |
| EP1721689A1 (en) | 2006-11-15 |
| EP1721689B1 (en) | 2011-05-18 |
| WO2005080023A1 (en) | 2005-09-01 |
| CN1921969A (en) | 2007-02-28 |
| US20070137825A1 (en) | 2007-06-21 |
| JP3948490B2 (en) | 2007-07-25 |
| JPWO2005080023A1 (en) | 2007-10-25 |
| EP1721689A4 (en) | 2007-05-02 |
| ATE509714T1 (en) | 2011-06-15 |
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