CN114656263A - Method for selecting raw material ratio of mineralizer of anti-deformation high-plasticity silicon-based ceramic core - Google Patents
Method for selecting raw material ratio of mineralizer of anti-deformation high-plasticity silicon-based ceramic core Download PDFInfo
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Abstract
The invention belongs to the technical field of raw material proportion selection of mineralizers of silicon-based ceramic cores, and particularly relates to an anti-deformation high-plasticity silicon-based ceramic core, which comprises the following components in percentage by weight: 35-45% of a base material, 20-25% of a mineralizer raw material and 15-30% of a plasticizer; according to the invention, different silicon-based ceramic cores are prepared by testing a plurality of mineralizer raw materials with different components and mixture ratios, so that the mineralizer raw materials with different component ratios are selected to prepare the silica-based ceramic cores under different use environments to meet the requirements under different use environments, the mixture ratio selection method is simple, the step process efficiency is high, the prepared silicon-based ceramic cores have multiple functions, have deformation resistance and high plasticity and can meet the use requirements in different fields, and different mineralizer raw materials are selected, so that the prepared silicon-based ceramic cores have good high-temperature flexibility and strength, small structural deformability, improved deformation resistance and high plasticity, and the stability of products is ensured.
Description
Technical Field
The invention belongs to the technical field of raw material proportion selection of mineralizers for silicon-based ceramic cores, and particularly relates to a method for selecting the raw material proportion of the mineralizer for an anti-deformation high-plasticity silicon-based ceramic core.
Background
The ceramic core is a core manufactured according to a hole or a cavity required by a part, and the silicon-based ceramic core is widely applied to the field of precision casting due to the characteristics of small expansion coefficient, strong capability of resisting rapid cooling and rapid heating, high mechanical strength, good chemical stability, convenience in depoling and the like.
At present, matrix materials of ceramic cores used at home and abroad comprise mullite, silicon dioxide, magnesium oxide, aluminum oxide, calcium oxide, titanium dioxide, zircon sand and the like to ensure and improve the deformation resistance and high plasticity of the ceramic cores, but the function and effect brought by the combination of one or more matrix materials are uncertain, so that a method for selecting the ratio of mineralizer raw materials of the deformation-resistant high-plasticity silicon-based ceramic core is provided by the technical field.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the anti-deformation high-plasticity silicon-based ceramic core comprises the following components in percentage by weight: 35-45% of a base material, 20-25% of a mineralizer raw material and 15-30% of a plasticizer.
Preferably, the raw material of the mineralizer comprises any one or more of mullite, silicon dioxide, magnesium oxide, aluminum oxide, calcium oxide, titanium dioxide and zircon sand.
Preferably, the mineralizer raw material is zircon sand.
Preferably, the mineralizer raw material is mullite.
Preferably, the mineralizer raw material is formed by mixing one or two or more of silicon dioxide, magnesium oxide and aluminum oxide in any mass ratio.
Preferably, the mineralizer raw material is formed by mixing one or more than two of calcium oxide, titanium dioxide and aluminum oxide in any mass ratio.
A method for selecting the raw material ratio of a mineralizer of an anti-deformation high-plasticity silicon-based ceramic core comprises the following steps:
s1, mixing powder: weighing a base material and zircon sand according to a proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparation of plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum stirrer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the material temperature is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mould to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
A method for selecting the raw material ratio of a mineralizer of an anti-deformation high-plasticity silicon-based ceramic core comprises the following steps:
s1, mixing powder: weighing a base material and mullite in proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparation of plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum mixer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the temperature of the slurry is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mold to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
A method for selecting the raw material ratio of a mineralizer of an anti-deformation high-plasticity silicon-based ceramic core comprises the following steps:
s1, mixing powder: weighing a base material, silicon dioxide, magnesium oxide and aluminum oxide according to a proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparation of plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum stirrer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the material temperature is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mould to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
A method for selecting the raw material ratio of a mineralizer of an anti-deformation high-plasticity silicon-based ceramic core comprises the following steps:
s1, mixing powder: weighing a base material, calcium oxide and titanium dioxide in proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparation of plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum stirrer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the material temperature is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mould to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, different silicon-based ceramic cores are prepared by testing a plurality of mineralizer raw materials with different components and mixture ratios, so that the mineralizer raw materials with different component ratios are selected to prepare the silicon-based ceramic cores under different use environments, the mixture ratio selection method is simple, the step process efficiency is high, the prepared silicon-based ceramic cores have multiple functions, have deformation resistance and high plasticity, and can meet the use requirements of different fields.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a reference graph showing the experimental results of example 1 of the present invention;
FIG. 2 is a reference graph showing the experimental results of example 2 of the present invention;
FIG. 3 is a reference graph showing the experimental results of example 3 of the present invention;
FIG. 4 is a reference graph showing the experimental results of example 4 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, the present invention provides the following technical solutions: the anti-deformation high-plasticity silicon-based ceramic core comprises the following components in percentage by weight: 35-45% of a base material, 20-25% of a mineralizer raw material and 15-30% of a plasticizer.
Specifically, the mineralizer is zircon sand as a raw material.
A method for selecting the mixture ratio of mineralizer raw materials of an anti-deformation high-plasticity silicon-based ceramic core comprises the following steps:
s1, mixing powder: weighing a base material and zircon sand according to a proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparation of plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum stirrer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the material temperature is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mould to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
The working principle and the using process of the invention are as follows: zircon sand is selected as a raw material of a mineralizer, so that the thermal deformation of the obtained ceramic core can be controlled below 0.1mm under the condition of heat preservation at 1500 ℃ for 0.6h, and the problems of core leakage and core deviation of a single crystal casting part caused by large high-temperature deformation of a silicon-based core are effectively solved.
Example 2
Referring to fig. 2, the present invention provides the following technical solutions: the anti-deformation high-plasticity silicon-based ceramic core comprises the following components in percentage by weight: 35-45% of a base material, 20-25% of a mineralizer raw material and 15-30% of a plasticizer.
Specifically, the mineralizer is mullite.
A method for selecting the raw material ratio of a mineralizer of an anti-deformation high-plasticity silicon-based ceramic core comprises the following steps:
s1, mixing powder: weighing a base material and mullite in proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparing a plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum stirrer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the material temperature is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mould to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
The working principle and the using process of the invention are as follows: mullite is used as a mineralizer raw material, so that the obtained ceramic core product has low core breaking rate, no crack, small shrinkage, good room temperature and high temperature strength, good size precision, high casting qualification rate and high plasticity.
Example 3
Referring to fig. 3, the present invention provides the following technical solutions: the anti-deformation high-plasticity silicon-based ceramic core comprises the following components in percentage by weight: 35-45% of a base material, 20-25% of a mineralizer raw material and 15-30% of a plasticizer.
Specifically, the mineralizer raw material is formed by mixing one or two or more of silicon dioxide, magnesium oxide and aluminum oxide according to any mass ratio.
A method for selecting the raw material ratio of a mineralizer of an anti-deformation high-plasticity silicon-based ceramic core comprises the following steps:
s1, mixing powder: weighing a base material, silicon dioxide, magnesium oxide and aluminum oxide according to a proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparation of plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum stirrer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the material temperature is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mould to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
The working principle and the using process of the invention are as follows: silicon dioxide, magnesium oxide and aluminum oxide are selected as raw materials of the mineralizer, so that the prepared silicon-based ceramic core has good chemical stability, low firing shrinkage and linear expansion rate and high deformation resistance.
Example 4
Referring to fig. 4, the present invention provides the following technical solutions: the anti-deformation high-plasticity silicon-based ceramic core comprises the following components in percentage by weight: 35-45% of a base material, 20-25% of a mineralizer raw material and 15-30% of a plasticizer.
Specifically, the mineralizer raw material is formed by mixing calcium oxide and titanium dioxide in any mass ratio.
A method for selecting the raw material ratio of a mineralizer of an anti-deformation high-plasticity silicon-based ceramic core comprises the following steps:
s1, mixing powder: weighing a base material, calcium oxide and titanium dioxide in proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparing a plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum stirrer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the material temperature is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mould to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
The working principle and the using process of the invention are as follows: the calcium oxide and the titanium dioxide are selected as raw materials of the mineralizer, so that the prepared silicon-based ceramic core has good high-temperature flexibility and strength to control the deformation of the shell at high temperature, the treated composite powder can reduce the mechanical stress on the surface, the structural deformability is small, the deformation resistance is improved, and the stability of the product is ensured.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The phrase "comprising a defined element does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an anti deformation high plasticity silica-based ceramic core which characterized in that: the composition comprises the following components in percentage by weight: 35-45% of a base material, 20-25% of a mineralizer raw material and 15-30% of a plasticizer.
2. The deformation-resistant highly plastic silicon-based ceramic core of claim 1, wherein: the raw materials of the mineralizer comprise any one or more of mullite, silicon dioxide, magnesium oxide, aluminum oxide, calcium oxide, titanium dioxide and zircon sand.
3. The mineralizer raw material for the deformation-resistant high-plasticity silicon-based ceramic core according to claim 2, wherein: the mineralizer is prepared from zircon sand.
4. The mineralizer raw material for the deformation-resistant high-plasticity silicon-based ceramic core according to claim 2, wherein: the mineralizer raw material is mullite.
5. The mineralizer raw material for the deformation-resistant high-plasticity silicon-based ceramic core according to claim 2, wherein: the mineralizer raw material is formed by mixing one or two or more of silicon dioxide, magnesium oxide and aluminum oxide according to any mass ratio.
6. The mineralizer raw material for the deformation-resistant high-plasticity silicon-based ceramic core according to claim 2, characterized in that: the mineralizer raw material is formed by mixing one or more than two of calcium oxide, titanium dioxide and aluminum oxide according to any mass ratio.
7. The method for selecting the mixture ratio of the mineralizer raw materials for the deformation-resistant high-plasticity silicon-based ceramic core according to claim 3, wherein the method comprises the following steps: the method comprises the following steps:
s1, mixing powder: weighing a base material and zircon sand according to a proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparing a plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum mixer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the material temperature is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mould to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
8. The method for selecting the raw material ratio of the mineralizer for the deformation-resistant high-plasticity silicon-based ceramic core according to claim 4, wherein the method comprises the following steps: the method comprises the following steps:
s1, mixing powder: weighing a base material and mullite in proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparation of plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum stirrer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the material temperature is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mould to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
9. The method for selecting the mixture ratio of the mineralizer raw materials for the deformation-resistant high-plasticity silicon-based ceramic core according to claim 5, wherein the method comprises the following steps: the method comprises the following steps:
s1, mixing powder: weighing a base material, silicon dioxide, magnesium oxide and aluminum oxide according to a proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparation of plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum stirrer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the material temperature is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mould to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
10. The method for selecting the raw material ratio of the mineralizer for the deformation-resistant high-plasticity silicon-based ceramic core according to claim 6, wherein the method comprises the following steps: the method comprises the following steps:
s1, mixing powder: weighing a base material, calcium oxide and titanium dioxide in proportion to form mixed powder, and putting the mixed powder into a three-dimensional mixer for mixing to obtain ceramic powder which is uniformly mixed and has uniform components;
s2, preparing a plasticizer: weighing paraffin, beeswax and polyethylene according to a proportion, adding the paraffin, the beeswax and the polyethylene into a vacuum stirrer, heating until the paraffin, the beeswax and the polyethylene are melted, uniformly stirring, adding graphene powder, continuously stirring for 12 hours, vacuumizing for 30 minutes, stopping stirring, standing for 10 minutes, discharging and cooling to obtain a plasticizer;
s3, batching: and (4) weighing the plasticizer prepared in the step S2 according to the proportion, adding the plasticizer into a vacuum stirrer, and heating to melt. Adding the ceramic powder prepared in the step S1 step by step, uniformly stirring, after the ceramic powder is completely added, stirring for 24 hours, vacuumizing for 2 hours, and stopping stirring to obtain ceramic core slurry;
s4, molding: putting the ceramic core slurry into a ceramic core pressure injection machine, and when the material temperature is consistent with the pressure injection process temperature, pressure injecting the ceramic core slurry into a required mould to prepare a wet ceramic core;
s5, roasting: and (3) filling the wet ceramic core into a burning pot filled with alumina filler, then putting the burning pot into a box type roasting furnace for roasting, and then cooling to room temperature along with the furnace to obtain the silicon-based ceramic core.
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