Classifications

• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
  • C04B28/04—Portland cements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22C—FOUNDRY MOULDING
  • B22C9/00—Moulds or cores; Moulding processes
  • B22C9/02—Sand moulds or like moulds for shaped castings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22C—FOUNDRY MOULDING
  • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
  • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
  • B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
  • B22C1/181—Cements, oxides or clays
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28B1/00—Producing shaped prefabricated articles from the material
  • B28B1/30—Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
  • C04B28/06—Aluminous cements
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
  • C04B28/10—Lime cements or magnesium oxide cements
  • C04B28/105—Magnesium oxide or magnesium carbonate cements
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
  • C04B28/26—Silicates of the alkali metals
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
  • C04B2111/00034—Physico-chemical characteristics of the mixtures
  • C04B2111/00181—Mixtures specially adapted for three-dimensional printing (3DP), stereo-lithography or prototyping
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
  • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
  • C04B2111/0087—Uses not provided for elsewhere in C04B2111/00 for metallurgical applications
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
  • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
  • C04B2111/00939—Uses not provided for elsewhere in C04B2111/00 for the fabrication of moulds or cores

Definitions

• the present invention relates to a modeling material, a functional agent, a molded product, and a product, and particularly relates to a modeling material, a functional agent, a molded product, and a product in a powder fixing lamination method.
• each cross-sectional area uses an ink-jet printhead that supplies an aqueous fluid to a particulate material that includes casting sand and a plaster containing a large amount of mineral gypsum that will serve as its binder. It is formed.
• This type of mold manufacturing method is referred to as a powder fixing lamination method (Patent Document 1).
• a casting material that can be used for a mold manufactured using gypsum is a limited metal material that is a low melting point metal and has a pouring temperature of about 1000 ° C. or less.
• the present invention relates to a molding material in a powder fixing lamination method capable of pouring even a refractory metal having a molten metal temperature exceeding 1400 ° C., and a molded product (for example, a mold) manufactured using the same.
• An object of the present invention is to provide a product (for example, a casting) manufactured using the shaped product as a mold.
• the present invention is a modeling material in a powder fixing lamination method, which includes an aggregate and a powdery precursor of a binder that binds the aggregate to each other. It is artificial foundry sand, and the powdery precursor contains a curing component and a curing promoting component.
• a refractory metal or the like having a molten metal temperature exceeding 1400 ° C. is poured by adopting a curing component replacing gypsum and a curing accelerating component contributing to fast curing.
• a curing component replacing gypsum and a curing accelerating component contributing to fast curing.
• the powdery precursor contains, as a curing component, sulfuric acid such as Portland cement, alumina cement, quick-hardening cement, phosphate cement, water glass, phosphate compound, metal alkoxide material, aluminum sulfate, and magnesium sulfate.
• sulfuric acid such as Portland cement, alumina cement, quick-hardening cement, phosphate cement, water glass, phosphate compound, metal alkoxide material, aluminum sulfate, and magnesium sulfate.
• At least one of a salt and a chloride containing polyaluminum chloride may be contained, and / or silica fume, magnesia ultrafine powder, and / or a heat resistant resin may be contained as a functional component.
• the curing accelerating component is not particularly limited as long as it has a function of accelerating the curing of the curable component. As a hardening acceleration
• lithium salt examples include lithium carbonate, lithium hydrogen carbonate, lithium nitrate, lithium sulfate, lithium phosphate, and lithium oxalate, and these can be used alone or in combination.
• Lithium carbonate is preferred from the standpoints of availability and stability.
• the foundry sand in one embodiment of the present invention may contain ZrO 2 and / or Al 2 O 3 : 75 to 97% by weight and SiO 2 : 2 to 25% by weight as chemical components.
• the functional agent in one embodiment of the present invention can be used together with the modeling material to change the powdery precursor into a binder, and further contains at least one of a preservative, an antifoaming agent, and a desiccant. May be included.
• a shaped product for example, a mold
• a product for example, a cast manufactured using the shaped product as a mold
• the modeling material and the functional agent of the present embodiment are used in a rapid prototype three-dimensional model manufacturing apparatus that employs a powder fixing lamination method.
• a rapid prototype three-dimensional model manufacturing apparatus that employs a powder fixing lamination method.
• the three-dimensional structure manufacturing apparatus for example, SpectrumZ310-3DPprinter manufactured by 3DS Systems, or SCM-800 manufactured by Seamet can be used.
• the modeling material of this embodiment can be used conveniently in the powder fixed lamination method.
• This modeling material includes an aggregate having an average diameter of 5 ⁇ m to 200 ⁇ m.
• the average diameter of the aggregate is not necessarily in this range, but an aggregate having a size within this range has an advantage that an additive manufacturing can be appropriately realized. If the average diameter of the modeling material is too large, the surface roughness of the molded product increases, and it may be difficult to obtain a precise molding. On the other hand, if the average diameter of the modeling material is too small, the fluidity of the aggregate may deteriorate, and problems such as difficulty in properly discharging the required amount may occur.
• the average diameter of the modeling material is desirably 10 ⁇ m to 100 ⁇ m, and more desirably 20 ⁇ m to 75 ⁇ m.
• an average diameter shall say the value of a laser diffraction type particle size meter.
• the average diameter of the foundry sand is preferably 20 ⁇ m to 75 ⁇ m.
• the foundry sand may be natural foundry sand or artificial foundry sand such as ceramics from the viewpoint of ingredients.
• artificial casting sand is preferable in that the average diameter has no variation, low thermal expansion and high filling property of the powdery precursor can be obtained.
• artificial sand is nearly spherical, there is an effect that it can be easily mixed with the following powdery precursor.
• natural foundry sand may be used by sieving only with a desired particle diameter using a sieve having a mesh size of 10 ⁇ m to 90 ⁇ m, preferably 20 ⁇ m to 70 ⁇ m.
• a sieve having a mesh size of 10 ⁇ m to 90 ⁇ m preferably 20 ⁇ m to 70 ⁇ m.
• those that have been sieved using a sieve device have the effect of being easily mixed with the following powdery precursor due to the stone wall effect, and are generally inexpensive. Therefore, natural casting sand and artificial casting sand may be properly used depending on the purpose of casting.
• the foundry sand not only fresh sand but also recycled sand can be used.
• the particle size distribution should be broadened.
• the foundry sands suitably used in the present embodiment include, as commercial products, FINE-Bz (manufactured by AGC Ceramics), Lunamos (manufactured by Kao Quaker), AR SAND (manufactured by Gunei Chemical Industry Co., Ltd.), Niiga Sera Beads ( Itochu Ceratech Co., Ltd.), zircon sand, chromite sand, Spearl (manufactured by Yamakawa Sangyo Co., Ltd.), spherical silica, silica sand processed into a spherical shape, and the like can be used.
• the foundry sand Since the foundry sand is used for castings produced by solidifying the high-temperature melt, it is desired that the foundry sand has higher fire resistance and thermal conductivity. From this viewpoint, it can be said that FINE-Bz, which is composed of corundum and has a high alumina content and high purity, is optimal. Further, FINE-Bz has a high fire resistance and a high thermal conductivity, and contains ZrO 2 and / or Al 2 O 3 : 75 to 97% by weight, SiO 2 : 2 to 25% by weight as chemical components. Since it is a refractory particle and is a spherical particle produced by melting and quenching method and has a smooth surface, it also has an advantage of having high molding strength.
• the modeling material of the present embodiment includes a powdery precursor containing at least a curing component and a curing accelerating component such as lithium carbonate.
• the powdery precursor can be, for example, a mixture of a relatively large amount of a curing component such as alumina cement and a relatively small amount of a curing promoting component such as lithium carbonate (Li 2 CO 3 ).
• the relatively small amount is preferably 0.05% by weight or more, more preferably 0.1% by weight or more, and further preferably 0.5% by weight or more based on the entire modeling material. On the other hand, it is preferably 6% by weight or less, more preferably 4% by weight or less, and further preferably 2% by weight or less.
• various adjusting agents can be mixed in the modeling material.
• the adjusting agent here, for example, as will be described later, when the functional agent is sprayed on the material for modeling, it suppresses the surplus of the functional agent from permeating around the position to be sprayed Is mentioned.
• this type of adjusting agent is used, the resolution of the mold can be improved, and as a result, the quality of the casting surface can be improved.
• the gas generated during pouring of molten metal can be reduced due to the presence of the surplus. Therefore, it is possible to suppress gas defects. What is necessary is just to select the adjusting agent according to the kind of foundry sand or a powdery precursor.
• the powdery precursor is cement
• water is used as the functional agent main body.
• the adjusting agent sodium silicate, polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), dextrin
• PVA polyvinyl alcohol
• CMC carboxymethyl cellulose
• dextrin a mixture thereof can be blended.
• the surplus of the water which is a functional agent main body will be absorbed by sodium silicate etc.
• the mixture ratio of a regulator suitably according to the magnitude
• the ratio of foundry sand: powdered precursor is preferably approximately 65 to 95% by weight: 5 to 35% by weight.
• foundry sand (Lunamos): The ratio of the powdery precursor (alumina cement + lithium carbonate) may be generally mixed at a ratio of 65% to 75% by weight: 25 to 35% by weight.
• the foundry sand (FINE-Bz) :
• the ratio of the powdery precursor may be approximately 80 to 95% by weight: 5 to 20% by weight.
• the mixing ratio of the curing component, the curing accelerating component, and the modifier constituting the powdery precursor depends on these component conditions, but the entire molding material.
• the curing component is 5 to 35% by weight
• the curing accelerating component is 0.1 to 6% by weight
• the adjusting agent is 1 to 5% by weight.
• the casting sand is preferably 54 to 93.9% by weight.
• alumina cement 5 to 30% by weight
• lithium carbonate 0.1 to 5% by weight
• regulator 1 to 4% by weight with respect to the whole material.
• the casting sand is preferably 61 to 93.9% by weight.
• the alumina cement, lithium carbonate, and the adjusting agent may be 5 to 25% by weight, 0.1 to 3% by weight, and 1 to 3% by weight.
• the casting sand is preferably 69 to 93.9% by weight.
• the organic substance is also included in the above examples of the adjusting agent, since the organic substance causes generation of gas, when adopting the adjusting agent of the organic substance, the entire modeling material, For example, it should not exceed 2% by weight.
• the manufacturing method of the modeling material is not limited, and the aggregate, the powdery precursor, and the adjusting agent only need to be sufficiently stirred.
• the aggregate, the powdery precursor, and the adjusting agent only need to be sufficiently stirred.
• a modeling material of about 100 kg, about 68.0 kg of aggregate, about 29.0 kg of powdered precursor, and about 1.0 kg of a conditioning agent are prepared and stirred. What is necessary is just to set to a container and to stir suitably.
• the functional agent of this embodiment should just change a powdery precursor into a binder so that the molding sand of modeling material may mutually bind. Therefore, the functional agent can be, for example, one containing water when cement is used as the powdery precursor, or one that cures the resin when using resin (for example, an aqueous resin curing agent). However, when resin is used, instead of spraying a water-based resin curing agent or the like from the nozzle, energy for resin curing (for example, heat or ultraviolet light) may be added.
• energy for resin curing for example, heat or ultraviolet light
• the functional agent when cement is used as the powdery precursor, in principle, it may be used as a functional agent for transforming only water into a binder.
• the spraying means may generate heat due to friction between water and the spraying means (nozzle head). This is the same when using the above-mentioned various ceramic materials as the powdery precursor. Problems can occur. Therefore, in order to cope with this heat generation, the functional agent may be mixed with a deterring agent that suppresses temperature rise and / or a surfactant that adjusts the surface tension of the functional agent body.
• the mixing ratio of the inhibitor and / or surfactant to the functional agent body is preferably 90 to 95% by volume for the functional agent body, 4 to 10% by volume for the inhibitor, and 1 to 2% by volume for the surfactant.
• the functional agent main body water is 90% to 95% by volume (for example, 94% by volume).
• 4 to 10% by volume (for example, 5% by volume) of glycerin as an inhibitor and 1 to 2% by volume (for example, 1% by volume) of a surfactant.
• the functional agent may optionally contain a preservative, an antifoaming agent, a desiccant and the like in consideration of storage stability and workability. In that case, what is necessary is just to add so that it may become 5 volume% or less in a functional agent, respectively.
• a powdery precursor that replaces gypsum is selected to constitute a material for modeling in the powder fixing lamination method. For this reason, even if a refractory metal having a melting point exceeding 1400 ° C. is poured, a mold that can withstand that temperature can be obtained.
• the strength of the shaped article can be improved by impregnating colloidal silica or the like under reduced pressure such as in a vacuum trough, or hot water can be prevented from penetrating into unnecessary places.
• colloidal silica it is preferably fired at 400 to 1200 ° C. thereafter.
• Example 1 The modeling material of Example 1 was manufactured by sufficiently stirring the following components.
• Lithium carbonate as a powder precursor about 1.0% by weight of lithium carbonate (special grade 500 g) manufactured by Kishida Chemical Co., Ltd.
• Conditioner approximately 1.0% by weight of GOHSENOL manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
• the penetration time of water into the modeling material is preferably several tens of seconds to several minutes.
• the water permeation time into the modeling material was determined by measuring the time until the water droplets disappeared from the material surface with the naked eye after completion of the dropping.
• the curing start time of the modeling material is the time when it can be clearly determined that it is not a powder when the curing effect measurement target is pushed with a bamboo skewer and started to change toward solidification. It is said.
• the hardness after the hardening start of the modeling material generally, it is preferable that the hardness becomes 90 or more at an early stage after water penetrates into the alumina cement and the hardening is started. The reason why the hardness is 90 or more is due to the ease of handling of the cured modeling material.
• the thickness of the cured portion of the modeling material is preferably about 7.5 mm or less, and more preferably about 7.0 mm or less.
• the weight of the hardened portion of the modeling material depends on the mixing ratio of the aggregate and the alumina cement, it is about 20 g to about 40 g when corresponding to the modeling material which is a genuine product of 3DS Systems SpectrumZ310-3DPprinter. fall in the range of, also, the volume of the cured portion of the build material, like, it is preferable that within the range of from about 9.0 cm 3 ⁇ about 18.0 cm 3.
• the modeling material of each Example and each Comparative Example satisfies all of these numerical values for the weight and volume of the cured portion of the modeling material.
• the thickness, weight, and volume of the cured portion were measured as follows after water was dropped and allowed to stand for 5 hours or longer and sufficiently cured. Thickness was measured visually by applying a ruler, weight was measured by weighing the cured part, and volume was calculated by measuring the volume of the remaining part after removing the cured part (non-cured) and subtracting from the filling volume before curing. .
• the modeling material of Example 1 can achieve a hardness of about 90 minutes after the start of curing, and 10 minutes after that, and the weight, thickness, and volume of the cured portion of the modeling material satisfy the above corresponding conditions. Since it satisfies, it can be evaluated that it is a good material for modeling.
• the modeling material of Example 1 has about 1/6 of the curing start time of the modeling material after dripping water. It can be seen that the time to obtain a hardness of about 90 is shortened to about 1/9.
• the modeling material of Example 2 can achieve a hardness of about 90 minutes after the start of curing, and 10 minutes after that, and the weight, thickness, and volume of the cured portion of the modeling material satisfy the above corresponding conditions. Since it satisfies, it can be evaluated that it is a good material for modeling.
• the modeling material of Example 2 has about 1/6 of the curing start time of the modeling material after dripping water. It can be seen that the time to obtain a hardness of about 90 is shortened to about 1/9.
• Example 3 Compared to the molding material of Example 1, the modeling material of Example 3 reduces the aggregate by about 2.0% by weight, and increases the powdered precursor lithium carbonate by about 2.0% by weight. It is manufactured. Other conditions are the same as those in the first embodiment.
• the modeling material of Example 3 has about 1/7 the curing start time of the modeling material after dripping water. It can be seen that the time to obtain a hardness of about 90 is shortened to about 1/9.
• Example 4 Further, the molding material of Example 4 is reduced by about 5.0% by weight of the aggregate and the lithium carbonate of the powdered precursor is increased by about 5.0% by weight as compared with the molding material of Example 1. It is manufactured by. Other conditions were the same as in Example 1.
• the modeling material of Example 4 can achieve the hardness of about 90 minutes after the start of curing, and after about 10 minutes, the hardness of about 90 can be achieved. Since the conditions are satisfied, it can be evaluated that it is a good material for modeling.
• the modeling material of Example 4 has about 1/8 of the curing start time of the modeling material after dripping water. It can be seen that the time to obtain a hardness of about 90 is shortened to about 1/9.
• the desired hardness can be obtained by mixing only about 1.0% by weight of lithium carbonate as in the modeling material of Example 1. I understood that. Moreover, even if the mixing amount of lithium carbonate is about 6.0% by weight as in Example 4, it can be seen that a desired curing result is obtained, and it is sufficient to mix at least within this range.
• Example 5 The modeling material of Example 5 was manufactured by sufficiently stirring the following components.
• Conditioning agent approximately 1.5% by weight of GOHSENOL manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
• the modeling material of Example 5 can achieve a hardness of about 90 minutes after about 2.5 minutes until the start of curing, and 10 minutes later, and the weight, thickness, and volume of the cured portion of the modeling material also correspond to each of the above-mentioned corresponding items. Since the conditions are satisfied, it can be evaluated that it is a good material for modeling.
• the modeling material of Example 5 shortens the curing start time of the modeling material after dripping water to about 1/7. It can be seen that the time for obtaining the hardness of about 90 is shortened to about 1/9.
• Example 6 The modeling material of Example 6 was manufactured by sufficiently stirring the following components.
• Lithium carbonate as powder precursor about 1.0% by weight of high purity lithium carbonate (industrial-3633: purity 99.60%) manufactured by Honjo Chemical Co., Ltd.
• Conditioning agent approximately 1.5% by weight of GOHSENOL manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
• the modeling material of Example 6 can achieve a hardness of about 90 minutes after the start of curing, and perhaps 20 minutes later, and the weight, thickness, and volume of the cured portion of the modeling material also correspond to the above. Since each condition is satisfy
• Example 7 The modeling material of Example 7 was manufactured by sufficiently stirring the following components.
• Powdered precursor lithium carbonate about 1.0% by weight of high purity lithium carbonate (UF-300: purity 99.60%) manufactured by Honjo Chemical Co., Ltd.
• Conditioning agent approximately 1.5% by weight of GOHSENOL manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
• the modeling material of Example 8 shortens the curing start time of the modeling material after dripping water to about 1/4. It can be seen that the time for obtaining the hardness of about 90 is shortened to about 1/8.
• the modeling material of Example 9 can achieve a hardness of about 90 minutes after the start of curing, and after about 5 minutes, the hardness of about 90 can be achieved. Since the conditions are satisfied, it can be evaluated that it is a good material for modeling.
• the modeling material of Example 9 When the modeling material of Example 9 is compared with the modeling material of Comparative Example 1, the modeling material of Example 9 shortens the curing start time of the modeling material after dripping water to about 1/6. It can be seen that the time to obtain a hardness of about 90 is shortened to about 1/18.
• the modeling material of Example 9 When the modeling material of Example 9 is compared with the modeling material of Comparative Example 2, the modeling material of Example 9 shortens the curing start time of the modeling material after dripping water to about 1/8. It can be seen that the time for obtaining the hardness of about 90 is shortened to about 1/12.
• Example 10 Compared with the molding material of Example 8, the modeling material of Example 10 reduces the aggregate by about 1.0% by weight and increases the powdered precursor lithium carbonate by about 1.0% by weight. It is manufactured. Other conditions are the same as in the eighth embodiment.
• the modeling material of Example 10 can achieve a hardness of about 90 minutes after the start of curing, and after about 5 minutes, the hardness can be about 90, and the weight, thickness, and volume of the cured portion of the modeling material can also be Since the conditions are satisfied, it can be evaluated that it is a good material for modeling.
• Example 11 The modeling material of Example 11 is obtained by reducing the aggregate by about 1.5% by weight and increasing the powdered precursor lithium carbonate by about 1.5% by weight as compared with the molding material of Example 8. It is manufactured. Other conditions are the same as in the eighth embodiment.
• the modeling material of Example 11 can achieve a hardness of about 90 minutes after the start of curing, and after about 5 minutes, the hardness of about 90 can be achieved. Since the conditions are satisfied, it can be evaluated that it is a good material for modeling.
• the modeling material of Example 11 shortens the curing start time of the modeling material after dripping water to about 1/7. It can be seen that the time to obtain a hardness of about 90 is shortened to about 1/18.
• the modeling material of Example 11 When the modeling material of Example 11 is compared with the modeling material of Comparative Example 2, the modeling material of Example 11 shortens the curing start time of the modeling material after dripping water to about 1/10. It can be seen that the time for obtaining the hardness of about 90 is shortened to about 1/12.
• the modeling material of Example 12 shortens the curing start time of the modeling material after dripping water to about 1/6. It can be seen that the time for obtaining the hardness of about 90 is shortened to about 1/9.
• the modeling material of Example 12 When the modeling material of Example 12 is compared with the modeling material of Comparative Example 2, the modeling material of Example 12 shortens the curing start time of the modeling material after dripping water to about 1/8. It can be seen that the time to obtain the hardness of about 90 is shortened to about 1/6.
• Example 13 The modeling material of Example 13 was produced by sufficiently stirring the following components.
• Powdered precursor lithium carbonate about 0.1% by weight of lithium carbonate (special grade 500 g) manufactured by Kishida Chemical Co., Ltd.
• Preparation agent approximately 1.0% by weight of GOHSENOL manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
• Example 14 The modeling material of Example 14 was manufactured by sufficiently stirring the following components.
• Powdered precursor lithium carbonate about 0.1% by weight of lithium carbonate (special grade 500 g) manufactured by Kishida Chemical Co., Ltd.
• Preparation agent approximately 1.0% by weight of GOHSENOL manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
• Example 16 The modeling material of Example 16 was produced by sufficiently stirring the following components.
• Powdered precursor lithium carbonate about 0.1% by weight of lithium carbonate (special grade 500 g) manufactured by Kishida Chemical Co., Ltd.
• Preparation agent approximately 1.0% by weight of GOHSENOL manufactured by Nippon Synthetic Chemical Industry Co., Ltd.

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