CN1298456C - Method for producing castings, molding sand and its use for carrying out said method - Google Patents
Method for producing castings, molding sand and its use for carrying out said method Download PDFInfo
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- CN1298456C CN1298456C CNB02820431XA CN02820431A CN1298456C CN 1298456 C CN1298456 C CN 1298456C CN B02820431X A CNB02820431X A CN B02820431XA CN 02820431 A CN02820431 A CN 02820431A CN 1298456 C CN1298456 C CN 1298456C
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- Prior art keywords
- molding material
- mould portion
- raw material
- mold
- casting
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Classifications
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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
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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
- B22C1/08—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 decreasing shrinkage of the mould, e.g. for investment casting
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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
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to a method which allows production of high-quality, complex castings and removal of the mold parts from the casting after casting in a simple and reliable manner. The inventive method comprises the following steps: producing a molding material by mixing a flowable base molding material that is inert vis-a-vis the molten bath and that has a lower coefficient of expansion when heated than silica sand, and a binder that has a different expansion behavior when heated than the molding material, producing a mold part from the molding material, assembling a casting mold using the mold parts, pouring the molten bath into the casting mold to give a casting, cooling the casting for a solidification and cooling interval in which the mold part automatically fragments, removing the fragments of the mold part from the casting, and processing the fragments of the molding material to a flowable base molding material.
Description
Technical field
The present invention relates to a kind of metal bath of using, especially the light metal melt as aluminum melt, is made the method for foundry goods.
In addition, the present invention relates to a kind of molding material and be used to make mould portion, these mould portions are used for casting metal melts, and light metal melt especially is as aluminum melt.This type of mould portion can for example relate to casting core, constitutes cavity by it in foundry goods inside to be made.Equally, also can relate to some members, be combined into a manifold mold, determine to wait to make the profile of foundry goods by mold by them by mould portion of the present invention.
Background technology
When making member by casting technique, need mould portion, determine the interior shape of the workpiece that will cast on the one hand and determine its profile on the other hand by them with metal.This type of mould portion can relate to casting core as previously mentioned, constitutes cavity by it in foundry goods inside to be made, or relates to mold member, is combined into a manifold mold by them, and this mold is determined foundry goods profile to be made.
Usually use the molding material system in order to make mould portion, they are made up of a kind of mold raw material and a kind of adhesive.These two kinds of compositions mix mutually, are shaped and be processed into compact body in appropriate hardening process., use quartz sand usually as the mold raw material here, it combines with a kind of organic bond in the overwhelming majority uses.
Adopt quartz sand as the raw material of making mould portion, especially when the casting light metal material, confirmed it is appropriate in many aspects already.For example this quartz sand obtains marked downly, with and characteristics be to be convenient to process and good quality arranged when constituting the mold member of each mould portion to be made.
As the alternative of organic bond and environmentally compatible, the adhesive of waterglass base is adopted in suggestion.This water glass binder mixes with molding sand.Resulting mixture injects in the molding box of moulding machine then, constitutes the cavity of reflection mould portion shape to be made there.Then, dewater for the mixture in mold by heat supply.Here, heat supply can be by correspondingly heating molding box or carrying out (WO-A-86/00033, EP 0 917 499B1, DE 196 32 293 A1) by the heating using microwave that acts directly on the mixture.
Obtain best processing achievement during for the assurance casting metal melts, the molding material that is used in the manufacturing mould portion must have high intensity and dimensional uniformity, even their are producing still maintenance under the situation of loading in the manufacturing mold and the melt process of casting.In addition, molding material should be able to be removed easily after casting.Especially this point had confirmed it is particular importance already when using casting core, and core constitutes complex-shaped inner chamber in foundry goods.
At last, molding material should be able to be regenerated after use, makes the mold raw material reach high as far as possible recycling rate of waterused.For this reason can be in the known manner by adopting inorganic bond to reach, inorganic bond discharges a spot of emission in the process of making mould portion, and finishes the back at casting process and can almost not have the burning of residue ground by the effect of high enough temp.
Show in actual use, known molding material system with contain organic or to contain inorganic adhesive irrelevant, having under normal operation is to obtain the needed characteristic of optimal process achievement.
Yet,, for example be used for cast engine body or cylinder cover core as them, because inevitably thermal expansion may cause no longer satisfying the requirement to the casting dimension accuracy as oil circuit especially for the mould portion of thin-walled.
When the foundry goods of casting complicated shape, when the mould portion that adopts tradition to make, another problem of existence is that molding sand can only be removed from foundry goods on difficulty ground after cooling.Usually make foundry goods be vibrated or impact, they should cause being in the casting core of foundry goods inside and stick to the mould portion of foundry goods outside cracked, and should impel the molding material particle to flow out for this reason.But this mechanical means that is used to remove mould portion brings the danger that damages foundry goods simultaneously.Member especially very thin for shape or thin-walled may cause crackle.
Therefore suggestion, the mechanical measure of metalepsis on foundry goods is heated to foundry goods consumingly and makes the adhesive burning and only to stay the mold raw material, and can remove in foundry goods and by foundry goods easily as loose material.Required for this reason equipment cost is very high.In addition, for the desired temperature of burning binder is so high, so that in heating, also can cause the metal casting changes of properties inevitably.
Summary of the invention
The purpose of this invention is to provide a kind of method, can make the complex-shaped foundry goods of high-quality with it, and according to said method casting process finish the back mould portion can with simple mode safely from or remove by foundry goods.Should provide a kind of molding material in addition, can make mould portion with it, this molding material can be made and be applicable to the mould portion of producing complex-shaped high quality casting, and after casting process finishes can with simple mode safely from or remove by foundry goods.
By a kind of by metal bath, especially the method by light metal melt manufacturing foundry goods reaches the purpose of this method aspect by the present invention, and the method is implemented the following step:
-make mould portion with a kind of molding material, molding material is in a ratio of inertia, loose mold raw material by a kind of and metal bath and a kind of adhesive mixes, wherein, the thermal expansion character of mold raw material and adhesive is coordinated with each other to be, the thermal coefficient of expansion that makes metal bath is greater than the thermal coefficient of expansion by the mould portion of molding material system
-use mould portion to be combined into a mold,
-metal bath is cast in the mold, make a foundry goods,
-solidify with cool time in, make foundry goods cooling, at this moment between in the process, mould portion is fragmented into fragment automatically,
-from or remove the fragment of mould portion by foundry goods,
-fragment of molding material is processed as loose mold raw material.
Above-mentioned purpose on the other hand is used to make casting metal melts by a kind of, especially the molding material of the mould portion used of light metal melt reaches, it is made up of a kind of mixture, mixture comprises and a kind ofly is in a ratio of inertia, loose mold raw material and a kind of adhesive that mixes with the mold raw material with metal bath, wherein, the thermal expansion character of mold raw material and adhesive is coordinated with each other to be, the thermal coefficient of expansion that makes metal bath is always greater than the thermal coefficient of expansion by the mould portion of molding material system.
The present invention is based on following understanding: can make mould portion by selecting a kind of appropriate molding material, they will and help for simple, safety in the mode of the best, and high-quality is made on environment ground, the needed characteristic of accurate in size foundry goods is combined with each other.
Making up those by molding material of the present invention by the mode of the best is the characteristic of precondition as making simply simultaneously with the high quality casting in manufacture.For this purpose, contain a kind of loose raw material that exists with granular or similar granular form by molding material of the present invention, that is, when during it is being cast, heating occurring inevitably, present a kind of and normally used quartz sand and compare much smaller thermal expansion amount.This mold raw material guarantees, also can obtain high size accuracy when making complex-shaped foundry goods even material thickness is little.
At unbound state is that loose raw material mixes with adhesive, and adhesive has the expansion characteristics different with raw material when heating.Based on the thermal expansion different of mold raw material, so after being cast the heat heating, cause adhesive to separate with the mold feed particles with adhesive.Therefore, consequently, when adhesive expands more consumingly than raw material it with the mould portion distending, make it to lose its fixed shape and can be easily from or remove by foundry goods.Otherwise, can cause the expansion characteristics of mold raw material in such a way, that is, and getting in touch and make raw material become loose condition (of surface) again by the stereomutation cut-out that comes with heating and adhesive.Key is along with heating causes core or mold member spalling, can be easy to remove and loose individuality thereby make it to be fragmented into after the foundry goods cooling.
By coordinating by the mode of the present invention and the thermal expansion character of the metal bath that will cast by the thermal expansion character of molding material of the present invention, and, be that make on the basis with loose raw material meanwhile by this molding material, reach make in foundry goods cooling back surrounded to small part by foundry goods or with the mould portion of foundry goods adjacency, be broken into loose individuality based on the power that occurs in cooling procedure, they can be removed easily.Here, breaking of mould portion caused because of the power that different expansions produce with molding material by the metal of casting.
The present invention has particularly advantageous effect when the member of cast aluminum melt.Aluminium has bigger thermal coefficient of expansion, thus in the melt casting and the process of solidifying, be at member on the mould portion of contact condition and apply big power with casting, thus the mould portion that will be referred to reliably is broken into small individuals.Proved already that particularly advantageous was that this mould portion relates to core.
By the present invention obtain and the molding material that uses another help characteristic of the present invention and be, adhesive and mold raw material are coordinated mutually, make that the particle of raw material is combined by adhesive thermally-stabilised and nonelasticly in the casting mold part of molding material manufacturing.With the mould portion of this mold raw material system that obtains, when the casting melt, show fragility in whole temperature ranges of process, impel mould portion desirably broken thus by the present invention.
The adhesive of mould portion preferably is chosen as, and it can be owing to the effect of heat is decomposed.Avoid discharging in core volume in this way, the mould portion that this volume may cause relating to is by the undesirable elasticity of the present invention.
Another favourable design of the present invention is that the particle of mold raw material has circular, spherical basically.Mold raw material spherical and interrelate with it dominant some contact between the mold feed particles, impel division automatically under the mechanical force that mould portion produces in the melt casting with when solidifying.A kind of mold raw material that can satisfy this requirement particularly well is a synthetic mullite.Therefore, another favourable design code of the present invention, the mold raw material has at least a portion, preferably replaces more than 50% or the aluminum oxide sand of 70% above quartz sand (mullite (Mullit)).Mullite has round grain shape and has and the similar density of quartz sand.Therefore, the molding material ratio made from it ZrO as is known
2Sand processing is much simple.Except the advantage aspect the mould portion machinery of seeking by the present invention is cracked, the spherical shape of mullite grains causes simplifying the processing with the molding material of this mold raw material system in real work, and causes simultaneously reducing and be used in the instrument of making mould portion and the wearing and tearing of machine.In addition, the molding material that mullite content is high is owing to its little thermal expansion, so even material thickness is little, still have high accuracy to size when making complex-shaped foundry goods.
Unexpectedly proved already, fragmentation with the mould portion of making by the molding material of the present invention's composition, such degree appears being delayed in the casting with respect to metal bath automatically in time, that is, this fragmentation no longer brings any negative influence to carving the foundry goods that fully solidifies at this moment.
Based on its special nature, the molding material of forming by the present invention is specially adapted to make casting core.They can not damage the removal jeopardously of Manufactured foundry goods after casting.
Would rather say heat-blocking action with mullite-quartz sand mixture mold raw material of forming and the molding material of making thus.Therefore these materials can on purpose be used in some casting technique application scenarios like this, promptly, although cause surpassing the heating of 573 ℃ of quartz sand critical-temperatures in these application scenarios, the thermal conductivity with the mould portion of related material system plays a part less important or should limit heat consciously to conduct in this case.
Actual tests shows, by add the mullite sand of q.s to quartz sand, can stop spontaneous geometry to change, and just can produce this geometry and change when using the quartz sand conduct to be used to make slender, very thin foundry goods separately.Here key is, Al
2SiO
5It is enough big that the ratio of sand is under any circumstance wanted, so that can compensate otherwise the length change of the quartz that can produce in quartz sand when heating surpasses critical-temperature.
In the molding material of obtaining by the present invention, in addition adhesive and raw material are preferably coordinated mutually in such a way, that is, make the mould portion made from this molding material that little thermal conductivity be arranged.This characteristic causes behind casting metal melts, and it is bigger that the temperature difference between cast material and mould portion still keeps, thereby the danger that mould portion causes heat or chemical breakdown is in advance dropped to minimum level.
In addition, cracked the taking measures of casting core supported, promptly, make mutual coordination of component of molding material be, mold raw material and adhesive differently expand when heating, consequently, the contact between them are destroyed because of the heating that causes in the melt casting.
Realistic especially is, the present invention can realize like this,, processes a kind of molding material that is, and it is made of a kind of loose raw material that exists with granular or similar granular form and the mixture of inorganic bond.
Use the advantage of inorganic bond to be its better Environmental compatibility, and can return without a doubt among the circulation of molding material with the mould portion that this adhesive is made.Confirmed already that appropriate especially in this respect molding material was, they by a kind of with waterglass be the base adhesive and a kind of mold raw material of forming by the present invention mix.The main points here are that the expansion characteristics of the composition that mixes has enough difference each other mutually.
Particularly advantageous in this respect is that mold raw material and adhesive differently expand.In this case, the particle separation that after being cast the heat heating, causes adhesive and mold raw material.For example adhesive makes it the mould portion distending lose its fixed shape and is broken into fragment when adhesive expands more strongly than cast raw material.The danger that these fragments can not cause mechanical damage easily from or come off by foundry goods.For this reason, in this scheme importantly, cause the mould portion sought by the present invention broken automatically, be based on the different expansions of mold raw material also by this way with adhesive, that is, make adhesive under the effect of foundryman's fever between mold raw material and adhesive because the thermal stress that forms comes off or breaks automatically from the mold feed particles.By this brittle fracture characteristic after the mould portion sclerosis of adhesive, destroyed the contact between each particle of mold raw material and made mould portion cracked.The lax mixture of leaving over of forming by mold raw material fragment and adhesive fragment be loose and can be easily from or remove by foundry goods.
Mould portion also can be made like this by method of the present invention, that is, will inject in the known manner in the core case of core sand moulding machine by the molding material mixture that the present invention forms.Then, molding material is for example by the sclerosis of the method that illustrates in DE 196 32 293 A1, for this reason, adds negative pressure in the core case is heated to the cavity of 100 ℃ to 160 ℃ of temperature, and the core blank is 20 to 30 seconds by core case duration of heat.
During at this moment, mould portion is cured to take out and insert from the core case and is located at core case external heated device for example in the micro-wave oven.It is with enough thermal power heating, until discharging for the sufficient water yield of hardening fully from mould portion in heater.
Be located at the heating using microwave of core case outside as an alternative or supplement, water vent can send hot-air to realize by abundant heated core box itself or by drum.These measures can combine with the heating of carrying out in core case outside respectively.Can cause draining by implementing heating using microwave on the direct core blank in still being in the core case equally.
If be hardened in core case outside and carry out the heating of mould portion, then in order to improve the relevant mould portion of whose surfaces intensity useful binders spray liquid.Mould portion through so handling has higher stability when having improved scuff resistance equally, so they can store and satisfy the peak demand to its dimensional accuracy no problemly.Proved already, when using water glass binder, advantageous particularly aspect casting quality optimization to be made.
Description of drawings
Accompanying drawing by expression embodiment further specifies the present invention below.Unique figure schematically illustrates the camshaft core of the mold that is used for a casting aluminium alloy cylinder lid of further not representing with profile.
The specific embodiment
Two grooves of the longitudinally spaced-apart spacing ground moulding of the downside of camshaft core are by being given for the shape of the bearing block of supporting camshaft on their the definite respectively cylinder head that will produce.In groove, put into one respectively and be parallel to the camshaft core and the branch of the oil circuit core of extension separated by a distance with it with its principal piece.Here, the length of branch is than the big manyfold of its diameter.Equally, the length of oil circuit core principal piece is also than the big manyfold of its diameter.
The oil circuit core is used in the known manner by molding material of the present invention and is made in traditional penetrating in the sand molding machine, and molding material is made by mixing a kind of mold raw material and a kind of water glass binder of being made up of mullite sand and quartz sand.Based on the ratio of mullite sand, it is heated in the process of the cylinder head that casting will be produced and surpasses 573 ℃ even guarantee the oil circuit core, but still can be equably and thereby uniqueness expand with pre-determining.
Avoid reliably in this way, as in by traditional mode, serving as that the basis takes place when making the oil circuit core, such as elongation and bending in principal piece free end zone in the zone between branch of fracture, principal piece in branch with the mold raw material that contains pure quartz sand.Therefore, by using the molding material of forming by mode of the present invention, can be when light metal casting in enormous quantities, make high-precision the have cylinder head of the thin channel of extending along big length and similar foundry goods reliably.
During casting metal melts (preferably relating to aluminum melt or other light metal melts) and when the metal of foundry goods still can flow, because the characteristic that mold raw material and adhesive are coordinated by mode of the present invention each other, so the distortion of casting core is very slight.This small thermal expansion of mold raw material helps process to reach the dimensional requirement of foundry goods reliably.
Through supersolidification and cool time, foundry goods obtains to further processing required enough intensity during this period, and each casting core since the effect of foundryman's fever be fragmented into fragment automatically based on the mold raw material thermal expansion character different with adhesive, they are from foundry goods emptying and reprocessing.In process of setting and in the cooling stage after metal solidifies fully because the cast metal compares much bigger solid amount of contraction with casting core, so that each casting core is subjected to high mechanical stress.Based on the crisp inelastic nature of casting core, this mechanical stress causes casting core to be broken into block fragment.Their volume and intensity are so little, so that only just can come off from foundry goods by adding vibrational energy, because whole core sands now separates with foundry goods.For sand fallout does not need as apply hammering by pneumatic hammer also requiring in the prior art.
The regeneration of casting core fragment can comprise and carefully is broken into granular solid matter.Then, the granular solid matter of acquisition can carry out metal separation and dedusting, so that the state of necessity when reaching it and re-using.Then, recirculation granulates the mould portion of material again as the raw material of the molding material of forming by the present invention.
If use molding material by mode of the present invention, they are made up of the mold raw material such as the synthetic mullite that mix with water glass binder, then can not produce tangible amount of emissions when making mould portion.Can avoid thus in traditional embodiment owing to forming the frequent casting flaw that occurs of gas, being the instrument cleaning that extracts the required a large amount of precautionary measures taked of gas and trouble.Environment and operating personnel's burden thereby reduce to minimum degree.
If adopt mullite or similarly inert refractory is as the raw material by molding material of the present invention system, then additional benefit of the present invention is the chemical stability that the mold raw material is compared with adhesive and melt.This character guarantees, the foundry goods that when implementing, obtains by mode of the present invention, and its surface is behind the fragment of emptying mold core and mould portion, and the cleaning measure that need not to take to add just can not adhere to residual sand grains fully.
Claims (15)
1. make the method for foundry goods with a kind of metal bath, comprise the following steps:
-make mould portion with molding material, molding material is in a ratio of inertia, loose, some synthetic mullite, that is made up of particle, that grain shape is essentially sphere mold raw material and a kind of inorganic bond by a kind of and metal bath and mixes, wherein, the thermal expansion character of mold raw material and adhesive is coordinated with each other to be, make the thermal coefficient of expansion of the thermal coefficient of expansion of metal bath greater than the mould portion of making by molding material
-use mould portion to be combined into a mold,
-metal bath is cast to makes a foundry goods in the mold,
-solidify with cool time in, make foundry goods cooling, at this moment between in the process, mould portion is fragmented into fragment automatically,
-from or remove the fragment of mould portion by foundry goods,
-fragment of molding material is processed as loose mold raw material.
2. it is characterized by in accordance with the method for claim 1: the manufacturing of mould portion comprise with molding material be injected in the hollow mould of a design in the core case, to make the molding material pre-hardening of injecting in the core case be mould portion and mould portion is located in the core case external heated device at one harden by heat supply.
3. it is characterized by in accordance with the method for claim 2: heater comprises a microwave applicator.
4. according to claim 2 or 3 described methods, it is characterized by: mould portion sprays with adhesive before sclerosis.
5. according to claim 2 or 3 described methods, it is characterized by: the processing of molding material fragment comprises pulverizes fragment, separating metal, particle classification and/or dedusting.
6. be used to make the molding material of the mould portion that casting metal melts uses, form by a kind of mixture, mixture comprise a kind of and metal bath be in a ratio of inertia, loose, some synthetic mullite, form by particle, its grain shape is essentially spherical mold raw material and a kind of inorganic bond that mixes with the mold raw material, wherein, the thermal expansion character of mold raw material and adhesive is coordinated with each other to be, the thermal coefficient of expansion that makes metal bath is always greater than the thermal coefficient of expansion of the mould portion of being made by molding material.
7. according to the described molding material of claim 6, it is characterized by: the expansion of adhesive is different from the mold raw material during heating.
8. according to claim 6 or 7 described molding materials, it is characterized by: adhesive is stable under the foundryman's fever effect.
9. according to claim 6 or 7 described molding materials, it is characterized by: adhesive is a kind of water glass binder.
10. according to claim 6 or 7 described molding materials, it is characterized by: the mold raw material is made up of mullite fully.
11. according to the described molding material of claim 7, it is characterized by: metal bath is a kind of aluminum melt.
12. according to the described molding material of claim 7, it is characterized by: the thermal conductivity of molding material is less than the thermal conductivity of metal to be cast.
13. the mold raw material that constitutes according to one of claim 7 to 12 is used to implement the application according to the method for one of claim 1 to 5 design.
14. according to the described application of claim 13, it is characterized by: the mould portion made from molding material is a casting core.
15. according to the described application of claim 14, it is characterized by: the length of mould portion is than the big manyfold of its diameter.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10145417.1 | 2001-09-14 | ||
| DE10145417A DE10145417A1 (en) | 2001-09-14 | 2001-09-14 | Production of cast pieces from a molten metal comprises forming a cast molded part, forming a molded part from the molding material, pouring the molten bath into the casting mold, cooling, removing the fragments of the mold part |
| DE10209224.9 | 2002-03-04 | ||
| DE10209224A DE10209224A1 (en) | 2002-03-04 | 2002-03-04 | Production of cast pieces from a molten metal comprises forming a cast molded part, forming a molded part from the molding material, pouring the molten bath into the casting mold, cooling, removing the fragments of the mold part |
| DE10209183.8 | 2002-03-04 | ||
| DE10209183A DE10209183A1 (en) | 2002-03-04 | 2002-03-04 | Production of cast pieces from a molten metal comprises forming a cast molded part, forming a molded part from the molding material, pouring the molten bath into the casting mold, cooling, removing the fragments of the mold part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1599651A CN1599651A (en) | 2005-03-23 |
| CN1298456C true CN1298456C (en) | 2007-02-07 |
Family
ID=27214603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB02820431XA Expired - Fee Related CN1298456C (en) | 2001-09-14 | 2002-09-13 | Method for producing castings, molding sand and its use for carrying out said method |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US20040261969A1 (en) |
| EP (1) | EP1425121B1 (en) |
| JP (1) | JP2005502473A (en) |
| KR (1) | KR20040070330A (en) |
| CN (1) | CN1298456C (en) |
| AT (1) | ATE323563T1 (en) |
| BR (1) | BR0212534A (en) |
| CA (1) | CA2461797A1 (en) |
| DE (1) | DE50206490D1 (en) |
| ES (1) | ES2262845T3 (en) |
| HU (1) | HUP0401547A2 (en) |
| MX (1) | MXPA04002424A (en) |
| PL (1) | PL367736A1 (en) |
| WO (1) | WO2003024642A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10321106A1 (en) * | 2003-05-09 | 2004-12-23 | Hydro Aluminium Deutschland Gmbh | Molded material, molded part and method for the production of moldings for a casting mold |
| EP1956786A3 (en) | 2005-09-30 | 2010-05-12 | Nortel Networks Limited | Initial access channel for scalable wireless mobile communication network |
| CN1319669C (en) * | 2005-12-20 | 2007-06-06 | 金啸海 | Moulding sand used for casting and its preparation method |
| EP2216112A1 (en) * | 2009-02-10 | 2010-08-11 | Siemens Aktiengesellschaft | Nickel based moulded component with a compensation body and method for producing same |
| WO2015032427A1 (en) * | 2013-09-04 | 2015-03-12 | Nemak Dillingen Gmbh | Method for removing a cast part cast from a light metal melt from a casting mould |
| DE102014110826A1 (en) | 2014-07-30 | 2016-02-04 | Fritz Winter Eisengiesserei Gmbh & Co. Kg | Method for casting castings |
| KR101663084B1 (en) * | 2016-03-18 | 2016-10-06 | 박성제 | Faucet manufacturing method |
| CN111822677A (en) * | 2019-04-11 | 2020-10-27 | 上海航天精密机械研究所 | Light metal casting method based on composite casting mold |
| DE102020208692A1 (en) | 2020-07-10 | 2022-01-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Process for the production and removal of a casting core and for the use of the casting core |
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| DE4446352A1 (en) * | 1993-12-24 | 1995-06-29 | Nissan Motor | Casting core composition |
| CN1114600A (en) * | 1994-07-05 | 1996-01-10 | 江苏理工大学 | Method for preparing organic ester water glass self-hardening sand from reclaimed sand |
| CN1121328A (en) * | 1993-04-22 | 1996-04-24 | 福塞科国际有限公司 | A mould and a method for the casting of metals and refractory compositions for use therein |
| CN1150070A (en) * | 1995-11-08 | 1997-05-21 | 花王株式会社 | Binder composition for casting mould, mould composition and mould manufacturing method |
| WO1998006522A2 (en) * | 1996-08-09 | 1998-02-19 | Vaw Motor Gmbh | Method for the production of core preforms and recycling core sand for foundry |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986000033A1 (en) * | 1984-06-12 | 1986-01-03 | MIKROVA^oGSAPPLIKATION AB | A method and a plant of manufacturing cores |
| US5612393A (en) * | 1993-12-24 | 1997-03-18 | Nissan Motor Co., Ltd. | Casting core composition |
| US6371194B1 (en) * | 1996-08-09 | 2002-04-16 | Vaw Aluminium Ag | Method for producing core preforms and recycling core sand for a foundry |
-
2002
- 2002-09-13 KR KR10-2004-7003845A patent/KR20040070330A/en not_active Application Discontinuation
- 2002-09-13 MX MXPA04002424A patent/MXPA04002424A/en active IP Right Grant
- 2002-09-13 CN CNB02820431XA patent/CN1298456C/en not_active Expired - Fee Related
- 2002-09-13 ES ES02772298T patent/ES2262845T3/en not_active Expired - Lifetime
- 2002-09-13 CA CA002461797A patent/CA2461797A1/en not_active Abandoned
- 2002-09-13 US US10/489,485 patent/US20040261969A1/en not_active Abandoned
- 2002-09-13 JP JP2003528331A patent/JP2005502473A/en active Pending
- 2002-09-13 AT AT02772298T patent/ATE323563T1/en not_active IP Right Cessation
- 2002-09-13 BR BR0212534-0A patent/BR0212534A/en not_active IP Right Cessation
- 2002-09-13 WO PCT/EP2002/010301 patent/WO2003024642A1/en active IP Right Grant
- 2002-09-13 DE DE50206490T patent/DE50206490D1/en not_active Expired - Fee Related
- 2002-09-13 PL PL02367736A patent/PL367736A1/en unknown
- 2002-09-13 EP EP02772298A patent/EP1425121B1/en not_active Expired - Lifetime
- 2002-09-13 HU HU0401547A patent/HUP0401547A2/en unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS544817A (en) * | 1977-06-15 | 1979-01-13 | Hitachi Ltd | Selffhardening casting sand |
| JPS5584251A (en) * | 1978-12-22 | 1980-06-25 | Hitachi Ltd | Casting method |
| CN1121328A (en) * | 1993-04-22 | 1996-04-24 | 福塞科国际有限公司 | A mould and a method for the casting of metals and refractory compositions for use therein |
| JPH07164102A (en) * | 1993-12-13 | 1995-06-27 | Mazda Motor Corp | Sand mold for casting and its manufacture |
| DE4446352A1 (en) * | 1993-12-24 | 1995-06-29 | Nissan Motor | Casting core composition |
| CN1114600A (en) * | 1994-07-05 | 1996-01-10 | 江苏理工大学 | Method for preparing organic ester water glass self-hardening sand from reclaimed sand |
| CN1150070A (en) * | 1995-11-08 | 1997-05-21 | 花王株式会社 | Binder composition for casting mould, mould composition and mould manufacturing method |
| WO1998006522A2 (en) * | 1996-08-09 | 1998-02-19 | Vaw Motor Gmbh | Method for the production of core preforms and recycling core sand for foundry |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1425121B1 (en) | 2006-04-19 |
| DE50206490D1 (en) | 2006-05-24 |
| ES2262845T3 (en) | 2006-12-01 |
| ATE323563T1 (en) | 2006-05-15 |
| CA2461797A1 (en) | 2003-03-27 |
| US20040261969A1 (en) | 2004-12-30 |
| PL367736A1 (en) | 2005-03-07 |
| JP2005502473A (en) | 2005-01-27 |
| CN1599651A (en) | 2005-03-23 |
| BR0212534A (en) | 2004-10-19 |
| MXPA04002424A (en) | 2005-04-11 |
| EP1425121A1 (en) | 2004-06-09 |
| WO2003024642A1 (en) | 2003-03-27 |
| KR20040070330A (en) | 2004-08-07 |
| HUP0401547A2 (en) | 2005-08-29 |
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