CN104439081A - Casting mold used in casting molding process of metal casting and casting - Google Patents
Casting mold used in casting molding process of metal casting and casting Download PDFInfo
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- CN104439081A CN104439081A CN201410686094.2A CN201410686094A CN104439081A CN 104439081 A CN104439081 A CN 104439081A CN 201410686094 A CN201410686094 A CN 201410686094A CN 104439081 A CN104439081 A CN 104439081A
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Abstract
The invention discloses a casting mold used in a casting molding process of metal casting and a casting cast with the casting mold. The casting mold comprises a shell and a core, wherein a cavity is formed in the shell; the core is arranged in the cavity in a predetermined manner; the shape of the casting to be formed is defined by both the outline of the core and the inner wall of the cavity; the shell is made of a ceramic material; at least part of the core is made of a ceramic material; a yielding structure used for shrinkage yielding and/or withdrawal yielding of the core is also arranged on the core. The casting mold provided by the invention not only can be used repeatedly, but also has the corresponding characteristic of a sand shell; as the core of the casting mold comprises the yielding structure, convenience is brought for withdrawal during use.
Description
Technical field
The present invention relates to casting technology field, be specifically related to a kind of for the casting mold in the pouring forming technology of metal casting.The present invention relates to a kind of foundry goods applying the casting of described casting mold and formation simultaneously.
Background technology
Casting is a kind of rapid metallic prototyping technique.Specifically, casting Metal Melting is smelt meet necessarily required liquid and water enter in mold die, through cooled and solidified, level process after obtain the technical process of the foundry goods (part or blank) of predetermined shape, size and performance.It is the fundamental technology of modern mechanical manufacturing industry.The product formed by casting is called foundry goods.
Casting technique generally includes: casting mold (making liquid metal become the container of solid-state foundry goods) prepares, casting mold can be divided into sand mold, metal mold, chamotte mould, graphite mould etc. by material therefor, can be divided into sexual type, half repeat type and a repeat type by access times, the quality that casting mold prepares is the principal element affecting casting quality; The fusing of cast metal and cast, cast metal (casting alloy) mainly contains cast iron, cast steel and cast nonferrous alloy; Foundry goods process and inspection, foundry goods process comprises removes core and ridge and heat treatment, shaping, antirust treatment and the roughing etc. such as cast(ing) surface foreign matter, excision dead head, relief grinding burr and fash.
In casting process, an indispensable step is exactly the preparation of casting mold, and the shape being cast foundry goods is determined by this casting mold completely.Wherein, described casting mold refers in Foundry Production the container making liquid metal become solid-state foundry goods.The inside of container claims die cavity, and its profile is equivalent to the profile of made foundry goods.Casting mold will bear the high temperature action of liquid metal and wash away, and thus must have corresponding high-temperature stability and enough intensity; After metal freezing is shaped, also should depart from foundry goods relatively easily.For adapting to above-mentioned requirement, people have developed various casting mold.Such as, in precision investment casting technique, adopt the high temperature resistant nonmetallic materials mix silica sol such as zircon sand, zirconium English powder, upper shop sand, upper shop powder to form shaping formwork on wax-pattern surface, after casting complete, formwork will by external force cleaned fall.This formwork forms the stable casting mold of high strength, geomery through the technique such as high-temperature roasting.In the production technology of non-ferrous metal or alloy precision parts, generally adopt metal die (casting mold), such as, pack alloy technique, adopt high temperature alloy, heat-resisting alloy as the material of casting mold, metal mold is also referred to as mould.
As mentioned above, formwork is formed by high temperature resistant non-metallic material manufacture, and it can bear 1800 degrees Celsius even high temperature of more than 2000 degrees Celsius, can be used in the casting technique of most metals parts; But formwork cannot be reused.Metal die is then just contrary, and it can matched moulds in a joint manner, forms cast die cavity, takes out foundry goods after die sinking, reusable.But metal die is limited to the characteristic of himself material, be difficult to bear the high temperature that temperature more than 1000 degrees Celsius is even higher.How making casting mold have the advantage of above-mentioned non-metallic material formwork and metal material mould concurrently, is the problem needing in casting technique to consider.
Summary of the invention
The invention provides a kind of for the casting mold in the pouring forming technology of metal casting, to solve the above-mentioned problem of existing casting mold.The present invention provides a kind of foundry goods applying the casting of described casting mold and formation in addition.
The invention provides a kind of for the casting mold in the pouring forming technology of metal casting, it comprises shell and core; In described shell, die cavity is set; Described core is located in described die cavity in a predefined manner, and its gabarit and die cavity inwall limit the shape of foundry goods to be formed jointly; Wherein, described shell is ceramic material; Described core is ceramic material at least partly, and on described core, be also provided with the yielding structure of shrinking yielding and/or withdrawing pattern yielding for core.
Optionally, described shell and core are specifically shaping by ceramic powders and/or ceramic fibre.
Optionally, described ceramic material is specially zirconia ceramics.
Optionally, the yielding structure that described core is arranged is specially micro-crack that is that be arranged at described whose surfaces and/or inside, and described micro-crack Breadth Maximum meets to stop and entered in this crackle under surface tension effects by casting of molten metal.
Optionally, described micro-crack makes an addition to be sintered fibrous material in core or binding material by ablation in core sinter molding process and to be formed or described micro-crack is shaped as by the Volume Changes in the control phase transition process of described core sinter molding.
Optionally, described core comprises the inner core wall forming contraction yielding chamber, and described core wall is combined by a plurality of separable loose piece, and described separable loose piece is taper or wedge shape or at least has a lozenges; Described yielding structure of shrinking described in the formation of yielding chamber.
Optionally, in described a plurality of separable loose piece, part is made up of other nonmetallic materials outside ceramic material.
Optionally, described yielding structure also comprises the micro-crack be arranged on part or all of separable loose piece.
Optionally, described micro-crack be arranged at described core towards in the superficial layer of die cavity side.
In addition, the application also provides a kind of foundry goods, and this foundry goods adopts the casting-up described in above-mentioned arbitrary technical scheme to form.
Compared with prior art, one of them aspect of the application has the following advantages: the casting mold of the application, comprises shell and core; In described shell, die cavity is set; Described core is located in described die cavity in a predefined manner, and its gabarit and die cavity inwall limit the shape of foundry goods to be formed jointly; Wherein, described shell is ceramic material; Described core is ceramic material at least partly, and on described core, be also provided with the yielding structure of shrinking yielding and/or withdrawing pattern yielding for core; By arranging casting mold material for pottery, making mould hardness higher, and there is certain toughness, and there is high bending resistance and anti-extrusion ability; Therefore the ceramic-mould formed is reused by dismounting, namely ceramic-mould shell can be divided into two or more fastening and be fixed as one two half modules, also make the foundry goods in shell can take out after die sinking, and need not destroy ceramic-mould; In addition, ceramic-mould can be high temperature resistant, particularly above-mentioned zirconia ceramics casting mold, can the resistance to high temperature more than 2200 degrees Celsius, makes the casting mold formed by ceramic material have the scope of application widely.In addition, because ceramic material is nonmetallic materials, it can not produce any impact to electromagnetic wave, therefore during the ceramic-mould of application the application, when can not limit this casting mold forming metal foundry goods of application, electromagnetic wave energy interference or electromagnetic wave stirring are carried out to the molten metal that the band casting metals liquid in ceramic-mould partly solidifies.
Therefore, provided by the present inventionly to have the following advantages:
1, ceramic-mould sintering after high temperature resistant up to 2200 degree, the fusing point of overwhelming majority ferrous material is 1550-1600 degree, and the fusing point that aluminium is ceramic or magnesium is ceramic is 1500 degree, therefore, zircon ceramic mould may be used in most metal liquid moulding process;
2, ceramic-mould can not shield electromagnetic wave, electromagnetic wave can be utilized to heat metal, metal is avoided to cool too fast, thus the process making metal liquid cool can be slack-off, give the exhaust of metal liquid abundance, deslagging time, complete refining process, thus make refining process not necessarily complete outside mould completely, also can complete in mould;
3, the alternation electricity such as intermediate frequency, medium-high frequency, high frequency can be utilized to realize electromagnetic agitation, avoid the homogeneous composition generation polymerism in alloy material, form segregation.
4, ceramic-mould has low temperature resistant quality simultaneously, can cool by fast cooling, thus Metal Forming Process is controlled after liquid metal completes refining process.
That is, the ceramic-mould of the embodiment of the present application not only has the advantage of the sandbox formwork addressed in above-mentioned background technology, the advantage of metal die when also having shaping for non-ferrous metal; In addition, by arranging yielding structure on described core, comparatively intricate casting or inside are provided with the foundry goods of cavity when moulding by casting to make structure, can avoid core from by casting metal because shrinkage factor is different by core " locking ", make non-destructive withdrawing pattern become possibility, can reuse after core is pulled out.
Accompanying drawing explanation
Sectional view after the plane subdivision that Fig. 1 is a kind of flange casting mold determines along the arbitrary diameter of flange bead and passing hole axis thereof;
Fig. 2 is a kind of flange casting mold core structure schematic diagram of the embodiment of the application;
Fig. 3 is the another kind of structural representation of the flange casting mold core of the embodiment of the present application.
Detailed description of the invention
Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, therefore the present invention is by the restriction of following public concrete enforcement.
Below in conjunction with embodiment describing in detail for the casting mold in the pouring forming technology of metal casting to the application.As mentioned above, in metal casting technique, both can with nonmetal formworks that formed on wax part such as quartz sands, as the casting mold that casting of metals is shaping; Also reusable mould can be manufactured, as the casting mold of the foundry goods such as die casting aluminium with refractory metal.Described metal material casting mold and non-metallic material casting mold respectively have superiority, and respectively have again and use restriction.There is provided a kind of casting mold in the application, this casting mold adopts ceramic material manufacture to form, and can gather the advantage of the casting mold of non-metallic material described in prior art and metal material casting mold, and can break through the restriction of aforementioned existing casting mold.
The application for the casting mold in the pouring forming technology of metal casting, comprise shell and core; Wherein, shell comprises the shell outer wall being provided with sprue gate and rising head.The space that the inner surface of described shell outer wall limits forms die cavity, and the inner surface of described shell outer wall limits by the profile of mould casting; Described core is fixedly installed in described die cavity in a predetermined manner, and according to by the difference of shaping foundry goods, core has different shapes and outer surface, and the gabarit of described core and described die cavity inwall limit the shape of foundry goods to be formed jointly; Wherein, described shell is ceramic material; At least part of ceramic material of described core, and yielding structure is also provided with on described core, described yielding structure is shunk for core and/or withdrawing pattern provides yielding redundancy.
The casting mold of the application is described for flange cast mould below.In the present embodiment, with flange flange periphery for circle illustrates the casting mold of the application.
As shown in fig. 1, its to be the application a kind of for the formation of sectional view after the plane subdivision determined along the arbitrary diameter of flange bead and passing hole axis thereof of the casting mold in flange pouring forming technology; In the present embodiment, comprise the first half module 10a and the second half module 10b and core 10c for the formation of the casting mold in flange pouring forming technology.Each half module includes shell wall and is arranged at half die cavity on shell wall; Form shell after two corresponding half die cavity open butt joints of half module, the die cavity that its inner formation is complete, the inwall of this die cavity and the peripheral shape of flange to be formed adapt.Described two half modules can be fixed as one by being arranged at fixed structure or additional fixed structure on half module.Described shell is also respectively arranged with two through holes corresponding to the position of flange passing hole, and this through hole is used for accommodating and passes core 10c.This shell can be provided with the supplementary structure such as plug hole and molten metal rising head, illustrate no longer one by one here.Described core 10c is cylindrical, and the passing hole of itself and flange adapts.After above-mentioned two shell matched moulds, core 10c, through the inside of die cavity, is equivalent to the gabarit defining flange through hole.Coordinated by described shell die cavity wall and core, define the die cavity with flange shape, in this die cavity, inject molten metal, and remove described shell and core after molten metal cooling forming, can flange casting be formed.
In the present embodiment, described shell is formed by ceramic material manufacture, and described core is ceramic material at least partly; Wherein, the main component of ceramic material comprises one or more in silica, aluminium oxide, potassium oxide, sodium oxide molybdena, calcium oxide, magnesia, iron oxide, titanium oxide.Formed by high-temperature calcination porcelain by ceramic raw material clay, quartz, potassium albite etc.In the present embodiment, described ceramic material is specially zirconia ceramics.Specifically, the forming process of zirconia ceramic mould is roughly as follows: first ceramic material preparation technology, is then moulding process and sintering process.
Zirconia ceramics material can be formed by the raw material material sintering containing zirconium.By producing the tiny Zirconium oxide powder (i.e. zirconia ceramics material) of granularity, described Zirconium oxide powder can be formed ceramic-mould as above by moulding process.Conventional moulding process has dry-press process and wet moulding.Dry-press process comprises dry-pressing formed and isostatic compaction; Wet moulding comprises injection forming, hot die-casting molding, flow casting molding, gel casting forming, Direct Coagulation Casting etc.The zirconia crystalline state also needing the step through high-temperature heat treatment that normal temperature is existed after shaping undergoes phase transition.Control the ceramic-mould that heat treatment temperature can form needs.Zirconia ceramics casting mold is formed by the Zirconium oxide powder formed in above-mentioned description; In addition, also first can form Zirconium oxide fibre, and be that ceramic material forms described ceramic-mould with Zirconium oxide fibre, also can form above-mentioned ceramic-mould by Zirconium oxide powder and Zirconium oxide fibre mixed material.For flange casting mold in the embodiment of the present application, flange casting mold is divided into two and half shells and a core, can be formed three parts of above-mentioned flange casting mold by respective molding tool respectively.
In addition, at ambient pressure, pure zirconia has several specific crystalline state, and different crystalline state is in different temperature ranges, by controlling temperature during heat treatment, can realize the phase transformation between the different crystalline phase of zirconia.In phase transition process, usually can with the release of Volume Changes and adaptability to changes or accumulation, thus the product formed can be made to crack even cracked.Therefore need in ceramic material, add suitable stabilizing agent, to change the temperature undergone phase transition between (mainly reducing) different crystalline phase, such as conventional stabilizing agent comprises Y
2o
3, MgO
2, CaO, CeO
2deng.Can phase transition temperature be changed by adding above-mentioned stabilizing agent, and energy during chargeable heat process, stoping the expansion of crackle, thus make the ceramic product toughness that formed relative to do not use stabilizing agent and the toughness of product that formed has obvious lifting.Toughening ceramic can be obtained.Certainly, other specific material can also be added in above-mentioned ceramic material, to improve the toughness of the ceramic-mould of formation.Or by being mixed mutually as ceramic material with ceramic fibre by ceramic powders, the powder morphogenetic ceramic die product that its ceramic-mould product formed also can be more single has higher toughness.
In embodiment above, be described ceramic-mould of the application and forming method thereof for flange casting mold.It will be appreciated by those skilled in the art that the application is not limited to flange casting mold, any casting mold for metal casting all can adopt the casting mold described by the application.In addition, zirconia ceramic mould described above, by powder and/or fiberizing, the hardness of the product of formation is higher, and the mould hardness formed is higher, has certain toughness, and has high bending resistance and anti-extrusion ability.Therefore the ceramic-mould formed is reused by dismounting, is divided into two can fasten ceramic-mould shell and be fixed as one two half modules, also makes the foundry goods in shell can take out after die sinking, and need not destroy ceramic-mould; In addition, ceramic-mould can be high temperature resistant, particularly above-mentioned zirconia ceramics casting mold, can the resistance to high temperature more than 2200 degrees Celsius, makes the casting mold formed by ceramic material have the scope of application widely.In addition, because ceramic material is nonmetallic materials, it can not produce any impact to electromagnetic wave, therefore during the ceramic-mould of application the application, when can not limit this casting mold forming metal foundry goods of application, to carrying out electromagnetic wave energy interference or electromagnetic wave stirring in the metal liquid solidification process poured into a mould in ceramic-mould.
Therefore, provided by the present inventionly to have the following advantages:
1, ceramic-mould sintering after high temperature resistant up to 2200 degree, the fusing point of overwhelming majority ferrous material is 1550-1600 degree, and the fusing point that aluminium is ceramic or magnesium is ceramic is 1500 degree, therefore, zircon ceramic mould may be used in most metal liquid moulding process;
2, ceramic-mould can not shield electromagnetic wave, electromagnetic wave can be utilized to heat metal, metal is avoided to cool too fast, thus the process making metal liquid cool can be slack-off, give the exhaust of metal liquid abundance, deslagging time, complete refining process, thus make refining process not necessarily complete outside mould completely, also can complete in mould;
3, the alternation electricity such as intermediate frequency, medium-high frequency, high frequency can be utilized to realize electromagnetic agitation, avoid the homogeneous composition generation polymerism in alloy material, form segregation.
4, ceramic-mould has low temperature resistant quality simultaneously, can cool by fast cooling, thus Metal Forming Process is controlled after liquid metal completes refining process.
That is, the ceramic-mould of the embodiment of the present application not only has the advantage of the sandbox formwork addressed in above-mentioned background technology, the advantage of metal die when also having concurrently shaping for non-ferrous metal.
In a preferred embodiment, shell provided by the present invention and core are specifically shaping by ceramic powders and/or ceramic fibre, ceramic-mould can utilize powder and bonding agent to be formed, also zirconia wire drawing can be utilized to become processbearing astrocyte, and the physical property such as elasticity, toughness of pottery all can be adjusted by the adjustment internal component of bonding agent and the thickness of fiber, therefore, ceramic-mould can regulate its performance as required, applicability is good, and the scope of application is wide.
In addition, shrink because ceramic material has very corpusculum, its body shrinkage factor is only the one thousandth of metal, shrinks hardly relative to metal.Be understood that, when using above-mentioned ceramic-mould, inject molten metal in ceramic-mould die cavity after, molten metal can produce larger contraction, and ceramic-mould then shrinks very little.The above-mentioned characteristic of the casting mold of ceramic material is for the comparatively simple foundry goods of structure, there is no harm, on the contrary also there is certain advantage: namely molten metal body in process of setting shrinks and causes the adhesion between the foundry goods outer wall of formation and the casting mold inwall of relevant position to reduce, even can produce certain gap, thus can be convenient to the shell when form removal be easy to remove; In addition, also not easily casting mold is destroyed due to extruding in metal solidification process.
But, for internal structure complexity or the foundry goods being provided with cavity, need to arrange core corresponding to casting cavity position.And the core be arranged in die cavity, after casting of molten metal, molten metal can the coated described core of coated or part, has at least part core can be wrapped in metal casting after solidifying.And be greater than the body shrinkage factor of the core with ceramic material because the body in metal liquid solidification process shrinks, make after foundry goods is shaping, core and metal casting can be solidified as a whole, and are difficult to be taken out by core by non-demolition means.Based on above reason, in the embodiment of the application, core is arranged and is used for the yielding structure that core shrinks yielding and/or withdrawing pattern yielding.Specifically, space is made a concession in the contraction that described yielding structure may be provided in core in metal solidification process, or is convenient to the yielding space of withdrawing pattern when being provided in the shaping rear withdrawing pattern of metal freezing, or the two haves both at the same time.For the former, making a concession structure can be the shrink space in metal solidification process be arranged on core, make the overall body shrinkage factor that generation is identical or roughly the same with metal freezing in metal solidification process of core, can not by core " locking ", thus be convenient under external force core be taken out by foundry goods when metal freezing shrinks; The second is made a concession structure and is specially the separable loose piece structure that core is arranged and the yielding chamber be arranged on core; When withdrawing pattern, loose piece is made a concession to yielding chamber can discharge in metal freezing forming process the convergent force put on core.Discuss respectively below.
First the collapsible yielding structure of the core in metal solidification process is described.In the embodiment of the application, described yielding structure is specially the micro-crack be arranged on described core.For the situation that core is pottery or part ceramic material, described micro-crack is specifically formed at ceramic segment in the present embodiment.So-called micro-crack, is namely formed at the non-gap of being filled by ceramic material on core, and described gap is that pottery provides when shrinking the redundant space being extruded contraction.Described micro-crack can be formed among core entirety, also can only in the superficial layer of core towards casting mold die cavity side.If described micro-crack is formed in superficial layer, then the Breadth Maximum of described micro-crack need meet and the molten metal by building can be stoped to enter under its surface tension effects in this crackle, to avoid being flowed in described micro-crack by the molten metal poured into a mould.
Be described for the cylindrical male plug of the above embodiments of the present application.As shown in Figure 3, it is a kind of structural representation of the core of the embodiment of the present application, and described core 10c is cylindrical, and material is zirconia ceramics, and itself and the shell shown in Fig. 1 are used in combination, and are formed with micro-crack at the outer surface of core 10c.The core that described micro-crack is ceramic material by provide during External Force Acting shrink make a concession space, can extrude when core shrinks and fill micro-crack formed space, thus make the body of core entirety contraction greatly once added.In addition, described core 10c can be set to hollow structure along its axis direction, as being provided with axial hole 12 vertically in Fig. 3.Arranging described cylindrical male plug 10c is hollow structure, and the inner surface of hollow structure also arranges micro-crack, and the body that can increase core further shrinks.The micro-crack of described whose surfaces can make an addition to be sintered fibrous material in core or binding material by ablation in core sinter molding process and be formed.Or formed by the Volume Changes in the control phase transition process of described core sinter molding.
Secondly, described yielding structure also can make a concession chamber for the contraction being arranged at core inside, and the outer wall making a concession chamber forms core wall.Described core wall consists of a plurality of separable loose piece; Described separable loose piece is specifically as follows taper or wedge shape or only has the structure of a lozenges; The conical surface or the lozenges of adjacent separable loose piece abut against, and form complete core; When casting of metals is shaping, needs described contraction to make a concession in chamber and support attaching means is set.Such as, when yielding chamber is circle hole shape, described support attaching means is the cylinder that matches with described circular hole.Be loose piece combining structure by arranging core, the gap on the one hand between loose piece is that core shrinks yielding and provides space, is equivalent in metal freezing is shaping, digesting a part of shrinkage stress; The opposing party, after metal freezing is shaping, first extract described support attaching means, be equivalent to open and release in metal freezing forming process the stress put on described core, then allow separable loose piece make a concession successively make a concession in chamber to described contraction, core withdrawing pattern can be realized.Be described for the flange casting mold core of the present embodiment below, please refer to Fig. 2, it is a kind of flange casting mold core structure schematic diagram of the embodiment of the application.In the present embodiment, core 10c comprises cylindrical male plug wall, is axially set to hollow structure, namely arranges axial hole 12 vertically along this cylindrical male plug wall.Described core wall is set to a plurality of separable loose piece 11, loose piece parting surface 13 along be parallel to axial hole 12 axis direction arrange, and run through outside described core wall with described axis hole 12.Each loose piece 11 two ends split surface abuts against to the corresponding split surface of adjacent loose piece respectively.In addition, described parting surface be arranged so that each loose piece along perpendicular to core barrel to the cross section in face be wedge shape, and have the large end of the wedge shape of part loose piece at least towards described contraction yielding chamber, be convenient to this loose piece and be pulled out in advance.
In addition, make a concession in above-mentioned metal solidification process domain solidify after yielding structure can be arranged on core simultaneously, such as, the loose piece of core being set to separable loose piece arranges micro-crack.Here no longer launch to discuss.
In addition, can also arrange described core part and be divided into ceramic material, part is other high temperature resistant and high body shrinkage factor material.
By arranging yielding structure on described core, comparatively intricate casting or inside are provided with the foundry goods of cavity when moulding by casting to make structure, can avoid core from by casting metal because shrinkage factor is different by core " locking ", make non-destructive withdrawing pattern become possibility, can reuse after core is pulled out.
The casting mold of the application is described in the above embodiments for ring flange casting mold, it should be noted that, the casting mold of the application is not limited to the flange mould described by above-described embodiment, it can be other any casting mold comprising ceramic material shell and core, described shell can be divided into two or more half module, described core is provided with any structure realizing making a concession in metal solidification process and/or after metal freezing, withdrawing pattern is made a concession.Those skilled in the art can make corresponding change according to the instruction of the embodiment of the present application, and these are included within the protection domain of the application.
The application also provides a kind of metal casting, and described metal casting is formed by described above-mentioned casting mold.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible variation and amendment, the scope that therefore protection scope of the present invention should define with the claims in the present invention is as the criterion.
Claims (10)
1. for the casting mold in the pouring forming technology of metal casting, it is characterized in that, comprise shell and core; In described shell, die cavity is set; Described core is located in described die cavity in a predefined manner, and its gabarit and die cavity inwall limit the shape of foundry goods to be formed jointly; Wherein, described shell is ceramic material; Described core is ceramic material at least partly, and on described core, be also provided with the yielding structure of shrinking yielding and/or withdrawing pattern yielding for core.
2. according to claim 1ly it is characterized in that for the casting mold in the pouring forming technology of metal casting, described shell and core are specifically shaping by ceramic powders and/or ceramic fibre.
3. according to claim 1 and 2ly it is characterized in that for the casting mold in the pouring forming technology of metal casting, described ceramic material is specially zirconia ceramics.
4. according to claim 1 for the casting mold in the pouring forming technology of metal casting, it is characterized in that, the yielding structure that described core is arranged is specially micro-crack that is that be arranged at described whose surfaces and/or inside, and described micro-crack Breadth Maximum meets to stop and entered in this crackle under surface tension effects by casting of molten metal.
5. according to claim 4 for the casting mold in the pouring forming technology of metal casting, it is characterized in that, described micro-crack makes an addition to be sintered fibrous material in core or binding material by ablation in core sinter molding process and to be formed or described micro-crack is shaped as by the Volume Changes in the control phase transition process of described core sinter molding.
6. according to claim 1 for the casting mold in the pouring forming technology of metal casting, it is characterized in that, described core comprises the inner core wall forming contraction yielding chamber, described core wall is combined by a plurality of separable loose piece, and described separable loose piece is taper or wedge shape or at least has a lozenges; Described yielding structure of shrinking described in the formation of yielding chamber.
7. according to claim 6ly it is characterized in that for the casting mold in the pouring forming technology of metal casting, in described a plurality of separable loose piece, part is made up of other nonmetallic materials outside ceramic material.
8. the casting mold of building in moulding process for metal casting according to claim 6, is characterized in that, described yielding structure also comprises the micro-crack be arranged on part or all of separable loose piece.
9. according to claim 4 or 8 for the casting mold in the pouring forming technology of metal casting, it is characterized in that, described micro-crack be arranged at described core towards in the superficial layer of die cavity side.
10. a foundry goods, is characterized in that, adopts the arbitrary described casting-up of the claims 1 to 9 to form.
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| CN105081215A (en) * | 2015-08-31 | 2015-11-25 | 苏氏精密制造技术（北京）股份有限公司 | Method for sand casting |
| CN106424577A (en) * | 2016-08-16 | 2017-02-22 | 浙江省机电设计研究院有限公司 | Sand core device and method for preventing hot cracks during steel casting iron mold sand covering casting production |
| CN106612604A (en) * | 2015-10-23 | 2017-05-03 | 成都泰格微波技术股份有限公司 | Manufacturing process of variable cross section metal flow channel water-cooling radiating die-casting cavity |
| CN108436037A (en) * | 2018-02-11 | 2018-08-24 | 清华大学 | A method of inhibiting casting thermal fragmentation |
| CN108889902A (en) * | 2018-07-20 | 2018-11-27 | 中国航发哈尔滨东安发动机有限公司 | A method of improving casting sand type deformability |
| CN113461412A (en) * | 2021-06-25 | 2021-10-01 | 西安交通大学 | Core-shell integrated casting mold with controllable gap and preparation method and application thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0585183A1 (en) * | 1992-08-10 | 1994-03-02 | Howmet Corporation | Investment casting using core with integral wall thickness control means |
| CN1433857A (en) * | 2002-12-26 | 2003-08-06 | 张西文 | Disposable casting products moulding device |
| US20110293434A1 (en) * | 2010-06-01 | 2011-12-01 | Ching-Pang Lee | Method of casting a component having interior passageways |
| CN103182481A (en) * | 2013-03-14 | 2013-07-03 | 山东理工大学 | Mold assembling method for casting cast steel gear by blocking ceramic molds |
| CN103317087A (en) * | 2013-05-24 | 2013-09-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Tapered embedded locating method for silicon-based ceramic core and aluminium-based ceramic shell |
| CN103639396A (en) * | 2013-11-29 | 2014-03-19 | 沈阳化工大学 | Method for producing metallic titanium and titanium alloy castings through ceramic molds |
| CN104014732A (en) * | 2014-06-10 | 2014-09-03 | 湖州南丰机械制造有限公司 | Assembled wax mold and production method thereof |
| CN104148581A (en) * | 2014-08-22 | 2014-11-19 | 无锡柯马机械有限公司 | A ceramic mold casting process |
-
2014
- 2014-11-25 CN CN201410686094.2A patent/CN104439081B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0585183A1 (en) * | 1992-08-10 | 1994-03-02 | Howmet Corporation | Investment casting using core with integral wall thickness control means |
| CN1433857A (en) * | 2002-12-26 | 2003-08-06 | 张西文 | Disposable casting products moulding device |
| US20110293434A1 (en) * | 2010-06-01 | 2011-12-01 | Ching-Pang Lee | Method of casting a component having interior passageways |
| CN103182481A (en) * | 2013-03-14 | 2013-07-03 | 山东理工大学 | Mold assembling method for casting cast steel gear by blocking ceramic molds |
| CN103317087A (en) * | 2013-05-24 | 2013-09-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Tapered embedded locating method for silicon-based ceramic core and aluminium-based ceramic shell |
| CN103639396A (en) * | 2013-11-29 | 2014-03-19 | 沈阳化工大学 | Method for producing metallic titanium and titanium alloy castings through ceramic molds |
| CN104014732A (en) * | 2014-06-10 | 2014-09-03 | 湖州南丰机械制造有限公司 | Assembled wax mold and production method thereof |
| CN104148581A (en) * | 2014-08-22 | 2014-11-19 | 无锡柯马机械有限公司 | A ceramic mold casting process |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081215A (en) * | 2015-08-31 | 2015-11-25 | 苏氏精密制造技术（北京）股份有限公司 | Method for sand casting |
| CN106612604A (en) * | 2015-10-23 | 2017-05-03 | 成都泰格微波技术股份有限公司 | Manufacturing process of variable cross section metal flow channel water-cooling radiating die-casting cavity |
| CN106612604B (en) * | 2015-10-23 | 2018-12-04 | 成都泰格微波技术股份有限公司 | A kind of manufacturing process of variable cross-section metal flow passage water-cooling die casting cavity body |
| CN106424577A (en) * | 2016-08-16 | 2017-02-22 | 浙江省机电设计研究院有限公司 | Sand core device and method for preventing hot cracks during steel casting iron mold sand covering casting production |
| CN108436037A (en) * | 2018-02-11 | 2018-08-24 | 清华大学 | A method of inhibiting casting thermal fragmentation |
| US11703361B2 (en) | 2018-07-02 | 2023-07-18 | Beijing U-Precision Tech Co., Ltd. | Five-degree-of-freedom heterodyne grating interferometry system |
| CN108889902A (en) * | 2018-07-20 | 2018-11-27 | 中国航发哈尔滨东安发动机有限公司 | A method of improving casting sand type deformability |
| CN113461412A (en) * | 2021-06-25 | 2021-10-01 | 西安交通大学 | Core-shell integrated casting mold with controllable gap and preparation method and application thereof |
| CN113461412B (en) * | 2021-06-25 | 2022-08-16 | 西安交通大学 | Core-shell integrated casting mold with controllable gap and preparation method and application thereof |
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