WO2007063888A1 - Composant pour la production de pièces coulées et son procédé de fabrication - Google Patents

Composant pour la production de pièces coulées et son procédé de fabrication Download PDF

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Publication number
WO2007063888A1
WO2007063888A1 PCT/JP2006/323797 JP2006323797W WO2007063888A1 WO 2007063888 A1 WO2007063888 A1 WO 2007063888A1 JP 2006323797 W JP2006323797 W JP 2006323797W WO 2007063888 A1 WO2007063888 A1 WO 2007063888A1
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WIPO (PCT)
Prior art keywords
fiber
manufacturing
content ratio
inorganic
thermosetting resin
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PCT/JP2006/323797
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English (en)
Japanese (ja)
Inventor
Yoshimasa Takagi
Akira Yoshida
Original Assignee
Kao Corporation
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Filing date
Publication date
Application filed by Kao Corporation filed Critical Kao Corporation
Priority to US12/085,686 priority Critical patent/US20090211717A1/en
Priority to CN2006800440683A priority patent/CN101316665B/zh
Priority to KR1020087012875A priority patent/KR101205749B1/ko
Priority to EP06833601.5A priority patent/EP1958717B1/fr
Publication of WO2007063888A1 publication Critical patent/WO2007063888A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
    • B22C1/08—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives for decreasing shrinkage of the mould, e.g. for investment casting
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C21/00—Flasks; Accessories therefor
    • B22C21/12—Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates

Definitions

  • the present invention relates to a part for producing a ware used as a runner pipe or the like when producing the ware, and a method for producing the same.
  • Patent Document 1 The applicant has proposed a technique described in Patent Document 1 below regarding a part for manufacturing a pot used as a runner pipe or the like when manufacturing a pot.
  • This technology is a base paper containing organic fiber, inorganic fiber, and binder, which is formed into a tubular shape. It is lighter than conventional refractory materials, and is handled and immediately disposed of after stuffing. Etc.
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2004-174605
  • combustion gas (hereinafter also simply referred to as gas) is generated due to the thermal decomposition of the organic fibers during fabrication.
  • gas combustion gas
  • the content of organic fibers is reduced, the dispersibility of the components deteriorates and the formation tends to decrease. Many of the parts had the problem of being defective. In particular, when making a base paper by papermaking, there was a problem that undulation was likely to occur.
  • the present inventors have found that by using a specific dispersant, even if the content of the organic fiber is reduced, a satisfactory product for producing a porridge can be obtained, and the present invention has been completed. It came.
  • the present invention has been made based on the above findings, and includes inorganic fiber, organic fiber, thermosetting resin, paper making noinder, sulfonate-based or Z- and cellulose-based dispersants.
  • the object has been achieved by providing a method for producing a porcelain manufacturing part comprising a step of preparing a raw slurry.
  • the present invention is characterized in that it contains inorganic fibers, organic fibers, thermosetting resin and papermaking nodes and contains a sulfonate-based or Z- and cellulose-based dispersant. It provides parts for making freight.
  • FIG. 1 is a perspective view schematically showing one embodiment of the present invention.
  • FIG. 2 is a cross-sectional view schematically showing a saddle mold used for evaluation of blowback in an example. Detailed Description of the Invention
  • the porcelain manufacturing component of the present invention will be described based on its preferred embodiment.
  • the part 10 for manufacturing porcelain has a total content of 100% by mass of inorganic powder, inorganic fiber, organic fiber, thermosetting resin, papermaking binder and water repellent.
  • Sulfonate-based or Z- and cellulose-based dispersants are contained in an amount of 0.001 to 10% by mass, preferably 0.01 to 10% by mass. By including the dispersant in such a range, it is possible to manufacture a favorable product-manufacturing part while keeping the content of the organic fiber low.
  • Examples of the sulfonate-based dispersant include j8-naphthalenesulfonic acid sodium salt formalin condensate, lignosulfonic acid sodium salt, melaminesulfonic acid sodium salt formalin condensate, and aromatic aminosulfonic acid.
  • Examples thereof include sodium salt polymer, polystyrene sulfonate sodium salt, polystyrene sulfonate Z polymaleene sulfonate sodium salt copolymer, polycyclopentadiene sulfonate sodium salt polymer, and polyaliphatic diene sulfonate sodium salt polymer.
  • 8-naphthalenesulfonic acid sodium salt with a polycondensation degree of 3 to 6 is preferred.
  • Examples of the cellulose-based dispersant include those that are highly water-soluble and that completely dissolve in a 1% by mass aqueous solution, for example, propylene oxide adduct derivatives of cellulose such as hydroxypropylcellulose and hydroxypropylmethylcellulose. Considering the texture of the base paper in the wet state, the hydroxypropyl cellulose is preferred! [0014]
  • the dispersing agents may be used alone or in combination of two or more.
  • the part for producing a soot product is a blending ratio of each component to the total mass of the inorganic powder, inorganic fiber, organic fiber, thermosetting resin, papermaking binder, and water repellent.
  • the total content ratio of the above components is 100%.
  • the shape retention at the time of filling and the surface property of the molded product are good, and the mold release property after molding is also suitable.
  • the blending ratio of the inorganic fibers is within such a range, papermaking properties and shape retention at the time of filling are good.
  • the blending ratio of the organic fibers is within such a range, the paper-making property is good and the amount of combustion gas generated at the time of squeezing can be reduced, so that blow back (the back flow of the molten metal) can be suppressed.
  • the blending ratio of the thermosetting resin is within such a range, the moldability of the mold, the shape retention after swallowing, and the surface smoothness are good.
  • the papermaking binder is within such a range, the powder component in the raw material can adhere to the fibers, and the fibers can be appropriately entangled to form an optimum floc for papermaking, and the yield is also good.
  • the mixing ratio of the water repellent is within such a range, an appropriate amount of adhesive that prevents the adhesive used when manufacturing the parts for manufacturing the garment from the base paper made by papermaking from penetrating into the base paper is used. Just use it.
  • the moisture in the sand when the part for manufacturing the clay is buried in the sand does not penetrate into the part for manufacturing the clay.
  • Examples of the inorganic powder include obsidian, mullite, and graphite such as plate-like graphite and earth-like graphite. These inorganic powders can be used alone or in combination of two or more.
  • a carburization phenomenon (a phenomenon in which carbon is absorbed by the soot and becomes brittle) occurs.
  • the carbon content of the porcelain is 4.2% by mass or more, the inorganic powder may not be included.
  • the inorganic fiber mainly forms a framework of a part for manufacturing a porridge, for example, melting at the time of forging. It maintains its shape without being burned by the heat of the metal.
  • the inorganic fibers include carbon fibers, artificial mineral fibers such as rock wool, ceramic fibers, and natural mineral fibers, which can be used alone or in combination of two or more.
  • PAN polyacrylonitrile
  • the inorganic fibers have an average fiber length of 0.1 to 0.5 mm, preferably 0.5 to 8 mm, from the viewpoint of the quality of the molded product when paper making parts for paper making are formed. Things are even better.
  • long fibers of 10 mm or more can be blended at the slurry stage, and the fibers can be cut with a refiner or the like, and the average fiber length can be controlled to 0.1 to LOmm.
  • Examples of the organic fiber include pulp fiber, fibrillated synthetic fiber, regenerated fiber (for example, rayon fiber) and the like.
  • the organic fibers can be used alone or in combination of two or more. Pulp fibers are preferred from the viewpoints of moldability, strength after drying, and cost.
  • Examples of the pulp fiber include wood pulp, cotton pulp, linter pulp, bamboo straw and other non-wood pulp.
  • these virgin pulp or waste paper pulp can be used alone or in combination of two or more.
  • the pulp fiber is particularly preferably used paper pulp from the viewpoint of easy availability, environmental protection, and reduction of manufacturing costs.
  • the organic fiber preferably has an average fiber length of 0.1 to 20 mm, preferably 0.5 to 10 mm.
  • thermosetting resin maintains the room temperature strength and hot strength of the product manufacturing part 10, and also improves the surface property of the heat-resistant paper tube layer and improves the surface roughness of the product. It is a necessary ingredient above.
  • thermosetting resin include phenol resin, epoxy resin, and furan resin. Among these, it has the effect of suppressing combustion with less generation of combustion gas, and it is good to form a carbonized film when used for forging where the residual carbon ratio after pyrolysis (carbonization) is as high as 25% or more. It is preferable to use phenol rosin because it can provide a smooth skin.
  • the residual carbon ratio means the mass measured after heating a thermosetting resin sample in a nitrogen atmosphere from room temperature to 1200 ° C at a heating rate of 50 ° C / min. The value divided by mass. Since the combustion gas is released from the thermosetting resin during heating, the mass after heating becomes lighter than before heating.
  • a phenol resin a novolak phenol resin that requires a curing agent, a phenol resin such as a resol type that requires a hard resin is used. In order to suppress the free elution free phenol in white water as much as possible, it is preferable to use a low free phenol resin.
  • a high molecular weight type of resole phenolic resin synthesized with a basic catalyst or an acidic catalyst is preferred.
  • thermosetting resin When using novolac phenol resin, a curing agent is required. Since the curing agent is easily soluble in water, it is preferably applied to the surface of the base paper after dehydration. It is preferable to use hexamethylenetetramine or the like as the curing agent.
  • the thermosetting resin can be used alone or in combination of two or more.
  • the combustion gas includes hydrocarbons such as methane and ethylene in addition to carbon monoxide and carbon dioxide.
  • Examples of the papermaking binder include starch, gelatin, guar gum, natural polymers such as CMC (Carboxymethylcellulose), sponge (polyamideamine chlorohydrin resin), PVA (Polybuyl alcohol), PAM ( Polyacrylamide), water-soluble synthetic polymers such as PEO (polyethylene oxide), and inorganic binders such as styrene-butadiene, acrylic-tolyl-butadiene, acrylic, and butyl acetate, colloidal silica, and alumina Etc.
  • sponge, CMC, acrylic latex, etc. which have excellent powder fixing properties.
  • the amount of added calories in the papermaking binder is preferably 0.01 to 5%, more preferably 0.02 to 1% of the organic fiber mass in terms of solid content.
  • These papermaking binders can be used alone or in combination of two or more.
  • a water-repellent agent can be added to the container manufacturing component 10 for the purpose of preventing the adhesive from penetrating into the base paper and preventing strength deterioration due to moisture absorption.
  • the water repellent silicon-based, fluorine-based, oil-based, hydrophobic surfactants, and hydrophobic polymers can be used.
  • the strength deterioration due to moisture absorption can be prevented by applying to the inner and outer surfaces of the porcelain manufacturing part 10 and drying.
  • an aqueous solution or emulsion as the properties of these water repellents, handling in use is simplified.
  • These water repellents alone Or 2 or more types can be selected and used.
  • silicone-based, fluorine-based and oil-based emulsions are preferable.
  • AKD alkyl ketene dimer
  • An appropriate amount of the water repellent may be added to the raw slurry, or it may be applied to a part for making a candy.
  • the coating method include spraying, brush coating, dip coating, and pouring, and spraying, dip coating, and pouring are preferable from the viewpoint of productivity.
  • thermosetting resin refers to coating in which the solution pumped up by a pump is hung on a part. It should be noted that the use environment of the parts for manufacturing the porridge is in a dry state, and the thermosetting resin may exhibit water repellency depending on the type and amount of the thermosetting resin used. In such a case, it is not necessary to add a water repellent.
  • the surface manufacturing component 10 has a surface roughness Ra of 20 m or less, and more preferably m or less.
  • the surface roughness Ra is measured by SurtroniclO (Rank Taylor Hobson).
  • the container manufacturing component 10 is formed of a base paper containing the above components.
  • the tensile strength of the base paper is preferably 40 NZl5 mm, particularly 80 NZl5 mm or more.
  • the tensile strength can be measured by slitting a 0.7 mm thick base paper to a width of 15 mm and performing a tensile test with a Tensilon universal testing machine (RTA500 manufactured by A & D Co., Ltd.). When the thicknesses are different, they are converted into a force per unit cross-sectional area for comparison. When the tensile strength is within such a range, tearing or the like when forming the paper tube for the product manufacturing part as in this embodiment can be prevented.
  • the part 10 for producing a ware is preferably 20N or more, more preferably 40N or more, in a state before being used for forging.
  • the compressive strength of the parts for manufacturing porcelain is measured with a compressive strength measuring instrument such as Tensilon Universal Testing Machine (RTA500 manufactured by A & D Co., Ltd.) with the part cut to a width of 60 mm and the cut surface lying sideways. This is the compressive strength of the tube side surface measured by pushing down at a compression speed of 10 mmZ.
  • the total thickness of the porcelain manufacturing component 10 can be set as appropriate according to the place where it is used. However, the strength of the porcelain manufacturing component is ensured, the air permeability is ensured, and the manufacturing cost is suppressed. In consideration of the above, 0.5 to 6 mm is preferable, and 1 to 3 mm is more preferable.
  • the moisture content (mass moisture content) in the state before being used for fabrication is preferably 20% or less. Less than% power is preferred.
  • the generation of water vapor is a force that causes blowback (back flow) from the molten metal inlet.
  • the article manufacturing part 10 is composed of two paper tube layers 11 and 12 on which a paper tube base paper is wound.
  • the base paper of the paper tube layers 11 and 12 is prepared.
  • the base papers of these paper tube layers 11 and 12 are composed of the inorganic powder, the inorganic fiber, the organic fiber, the thermosetting resin, the papermaking binder, and the dispersion constituting the part 10 for manufacturing a soot.
  • Each of the raw material slurries containing the agent is prepared, paper is made from these raw material slurries by a wet paper making method, dehydrated and dried.
  • Examples of the dispersion medium of the raw material slurry include water, white water, and a solvent such as ethanol and methanol. Among these, water is also preferable for the points such as papermaking, dehydration molding stability, quality stability, cost reduction, and ease of handling.
  • Additives such as a flocculant and an antiseptic can be added to the raw material slurry.
  • Examples of the paper making method for these base papers include a continuous paper making type circular paper machine, a long paper machine, a short paper machine, a twin wire paper machine, and a batch paper making method.
  • a papermaking method such as a manual method can be employed.
  • each base paper is preferably dehydrated until the water content force S is 30% or less, more preferably 10% or less.
  • dewatering methods for base paper after paper making include dewatering methods such as dewatering by suction, dehydrating by blowing pressurized air, dewatering by pressing with a pressure roll or pressure plate, etc. Can be adopted.
  • the dehydrated base paper is dried in a drying step.
  • a conventional method conventionally used for paper drying is used.
  • the tensile strength of the base paper after dehydration and drying is preferably 4 ONZ 15 mm or more, more preferably 80 NZl 5 mm or more in consideration of winding up as a paper tube.
  • the tensile strength can be measured by slitting a base paper having a thickness of 0.7 mm into a width of 15 mm and performing a tensile test using the Tensilon universal testing machine. If the thickness of each sample to be measured is different, convert it to force per unit cross-sectional area.
  • the buckling strength of the base paper after dehydration and drying is preferably 3N or more, more preferably 4N or more in consideration of the strength of the product for producing a soot.
  • the buckling strength is a three-point bending buckling strength test, that is, a 60 mm wide, 100 mm long base paper placed on a measuring device with a fulcrum distance of 40 mm, and pressed from the top with a width of 60 mm and a tip diameter of 6 mm. It is measured by performing a compression test with a hammer.
  • the buckling displacement of the base paper after dehydration and drying is preferably 3 mm or more, more preferably 5 mm or more.
  • buckling displacement refers to the amount of deformation of the base paper at the maximum stress point in the three-point bending test.
  • the base paper after dehydration and drying preferably has a combustion gas generation amount per unit mass of the part at 1000 ° C of 250 ccZg or less, more preferably 200 ccZg or less.
  • the combustion gas generation amount is measured by a combustion gas generation amount measuring device (measuring instrument name: No. 682 GAS PR ESSURETESTER HARRY W.DIETERT CO.).
  • the base paper after dehydration and drying preferably has a surface roughness Ra of 20 ⁇ m or less, more preferably 10 ⁇ m or less.
  • the surface roughness Ra is measured by SurtroniclO (manufactured by Rank Taylor Hobson) or the like.
  • the base paper after dehydration and drying preferably has a water repellency of 15% or less, more preferably 10% or less.
  • the water repellency of the base paper is measured, for example, according to the water absorption test method (cup method) of paper and paperboard as defined in JIS P8140. The contact time between the test piece and water was measured as 60 seconds.
  • the density of the base paper after dehydration and drying is preferably 0.62 to 0.9gZm 3. 0.64 to 0.75 g / m 3 is more preferred. If it is within the range, the base paper will not be cut due to insufficient strength when it is rolled up as a paper tube, and on the other hand, it will not be difficult to wind up due to excessive bending rigidity of the base paper.
  • each of the obtained base papers is cut into a predetermined width, and wound into a spiral shape to be formed into a cylindrical shape.
  • the base paper may be wound in the same direction or in different directions. In the case of the same direction, it is preferable that the paper sheets are overlapped so as to cover the seam portion of the base paper that has been previously rolled up. In the case of lap winding, it is formed into a cylindrical shape using an appropriate adhesive.
  • the width of each base paper, the stacking width, the inner diameter of the paper tube, etc. are set according to the mass of the container (the amount of molten metal that passes through the tube) and the molding strength (the strength that can withstand the pressure when making the sand mold).
  • the porcelain manufacturing component of the present embodiment is excellent in that the content of organic fiber is suppressed and the generation of combustion gas at the time of fabrication with good strength is suppressed.
  • ⁇ producing part 10 of this embodiment is a gas generation amount in the 1000 ° C is 250 rate torr / m 2 or less, preferably 150 l / m 2 or less.
  • m 2 is a unit of the surface area of the part 10 for the average diameter of the part 10 for making a ware.
  • the average diameter refers to the diameter calculated by (inner diameter + outer diameter) Z2.
  • Gas generation amount is preferably as low as possible, the lower limit on a real is 1-10 l Zm 2.
  • the gas generation amount at 1000 ° C. is measured by a gas generation amount measuring device (measuring instrument name: No. 682 GAS PRESSURETESTER HARRY W. DIETERT CO.).
  • the porcelain manufacturing component is configured by two paper tube layers, but may be configured by three or more paper tube layers.
  • these layer configurations can be appropriately set according to the molding strength, hot strength, base paper thickness, and the like.
  • the hot strength is the mechanical strength when in contact with the molten metal.
  • the force for producing the porcelain production part from the base paper obtained by paper making in advance is used.
  • the raw material slurry force Conventional force
  • the paper production part is made by a known pulp molding method. Also good.
  • Inorganic powder Obsidian powder (average particle size 30 i um), 65.5% by mass
  • Inorganic fiber Carbon fiber (length: 3mm (Toray Industries, Inc .: Tore force chop)), 4% by weight Organic fiber: Waste paper, 12% by weight
  • Thermosetting ⁇ resol phenol ⁇ (Air Water Bell Pearl Co.: Bell Bruno Lumpur S- 890), 18 weight 0/0
  • Papermaking binder sponges, 0.25 mass 0/0
  • Papermaking binder CMC, 0.25 mass%
  • Dispersant j8-Naphthalenesulfonic acid sodium salt formalin condensate (manufactured by Kao Corporation, Demol N), 0.5% by mass (inorganic powder, inorganic fiber, organic fiber, thermosetting resin, for papermaking Add 0.5% by mass of the dispersant to the total power of the binder and water repellent content by mass%)
  • lOOg of raw material and 0.5 g of the above dispersant are placed in a 2L juicer mixer together with 1.9 liters of water (hereinafter referred to as L) and mixed and stirred for 3 minutes to obtain a raw material slurry.
  • L 1.9 liters of water
  • the obtained raw material slurry is put into a paper making tester (size of obtained base paper: length 250 mm ⁇ width 250 mm, paper making net: 40 mesh, capacity: 15 L) together with 13 L of diluted water, and stirred and left to stand for 1 minute. Thereafter, paper is made to drain white water to obtain a wet base paper. Subsequently, the obtained wet base paper was pressed at 0. IMPa and dried in a dryer at 105 ° C for 30 minutes to obtain a base paper sample.
  • the number of inorganic fibers agglomerated on the back side of the paper making surface of the above base paper sample was counted and evaluated by the following points.
  • the number of evaluation points of the area ratio where the inorganic powder and the thermosetting resin were aggregated on the back side (papermaking network side) of the above base paper sample was determined. This is because when the distribution of the strong component is poor, it accumulates on the back side of the base paper sample.
  • the area ratio where inorganic powder and thermosetting resin are aggregated is 80-100%.
  • the area ratio where the inorganic powder and thermosetting resin are aggregated is 60 to 79% 2 points: The area ratio where the inorganic powder and thermosetting resin is aggregated is 40 to 59% 3 points: 20% to 39% area ratio of aggregated inorganic powder and thermosetting resin 4 points: 10% to 19% area ratio of aggregated inorganic powder and thermosetting resin 5 points: The ratio of the area where the inorganic powder and the thermosetting resin are aggregated is 9% or less. (The inorganic powder is aggregated when the white powder is agglomerated. it can
  • thermosetting resin is agglomerated and the powder is agglomerated!
  • the surface roughness Ra is measured according to the operating manual of SurtroniclO (Rank Taylor Hobson).
  • the amount of combustion gas generated was measured in the following procedure using a gas generation amount measuring device (measuring instrument name: No.682 GAS PRESSURE TESTER HARRY W. DIETERT CO.).
  • a gas generation amount measuring device measuring instrument name: No.682 GAS PRESSURE TESTER HARRY W. DIETERT CO.
  • the sample is placed on the sample stage of the gas generation amount measuring device. Measure the amount of combustion gas generated according to the measurement equipment.
  • the combustion gas generation rate is calculated by the integral value of the combustion gas generation rate, and the combustion gas generation rate after 30 seconds is calculated.
  • Chromatopack C-R4A manufactured by Shimadzu Corporation was used as a computer for analyzing the combustion gas generation rate and the combustion gas generation amount.
  • a base paper sample was prepared in the same manner as in Example 1 except that the dispersant was changed to the following dispersant.
  • the obtained base paper was evaluated in the same manner as in Example 1. Table 1 shows the results.
  • Dispersant Hydroxypropylcellulose (Hercules Co., Ltd .: Crucell H), because the dispersant is poorly soluble, pre-diluted in an aqueous solution with a concentration of 1% and converted to a solid content of 0.5% by mass. Added.
  • a base paper was produced in the same manner as in Example 1 except that no dispersant was used, and further, a part for producing a candy was produced in the same manner as in Example 1.
  • the obtained base paper was evaluated in the same manner as in Example 1. The results are shown in Table 1.
  • a base paper was prepared in the same manner as in Example 1 using the following base paper material for the tube layer. Here, the amount of organic fiber was doubled as in Example 1, and a base paper was prepared without adding a dispersant.
  • Inorganic powder Obsidian powder (average particle size 30 ⁇ m), 48% by mass
  • Inorganic fiber Carbon fiber (length: 3mm (Toray Industries, Inc .: Tore force chop)), 9.5 mass% Organic fiber: waste paper, 24 mass%
  • Thermosetting ⁇ resol phenol ⁇ (Air Water Bell Pearl Co.: Bell Nord S- 890), 18 weight 0/0
  • Papermaking binder sponges, 0.25 mass 0/0
  • Papermaking binder CMC, 0.25 mass%
  • the base paper obtained in each example was superior to Comparative Example 1 in terms of formation and surface roughness, and was able to suppress the amount of combustion gas generated.
  • Comparative Example 2 the organic fiber twice as much as in the example was used, so that the base paper had good formation and surface roughness, but the amount of combustion gas generated was large.
  • a two-layered tubular manufacturing part as shown in Fig. 1 was made from a base paper with the following composition. Then, the amount of combustion gas generated and blowback of the obtained parts for producing porcelain were evaluated as follows. The results are shown in Table 2.
  • Inorganic powder Obsidian (manufactured by Kinsei Matec, Nice Catch Flower # 330), 57.3 wt%
  • Inorganic fibers carbon fibers (manufactured by Mitsubishi Chemical Corporation, pies port fill TR03CM), 7. 2 mass 0/0 Organic fiber: Play wastepaper, 11.5 wt%
  • Thermosetting ⁇ resol phenol ⁇ (Air Water Co., Bellpearl S890), 17. 5 mass 0/0
  • Papermaking binder sponges, 3.0 mass 0/0
  • Papermaking binder CMC, 3.0% by mass
  • Water repellent Alkyl ketene dimer, 0.5% by mass
  • Dispersant j8-Naphthalenesulfonic acid sodium salt formalin condensate (manufactured by Kao Corporation, Demol N), 0.5% by mass (inorganic powder, inorganic fiber, organic fiber, thermosetting resin, for papermaking Add 0.5% by mass of the dispersant to the total power of the binder and water repellent content by mass%)
  • the above-mentioned 0.7mm paper tube layer base paper is cut into two types of widths of 80mm and 82mm in width, and the 80mm wide paper on the outer diameter ⁇ 50mm shaft is the first layer and the 82mm wide paper.
  • the adhesive on the second layer so as to cover the seam of the first layer, and a part for manufacturing tubular casings in the form of Fig. 1 was produced.
  • Adhesive Fountain resin grease (Sumitomo Bakelite, PR— 51464) Total thickness: 1.4 mm
  • the amount of combustion gas generated was measured in the following procedure using a gas generation amount measuring device (measuring instrument name: No.682 GAS PRESSURE TESTER HARRY W. DIETERT CO.).
  • a gas generation amount measuring device measuring instrument name: No.682 GAS PRESSURE TESTER HARRY W. DIETERT CO.
  • the sample is placed on the sample stage of the gas generation amount measuring device, and the combustion gas generation amount is measured according to the measurement equipment.
  • the amount of combustion gas generated is calculated by programming the integrated value of the combustion gas generation rate, and the combustion gas generation after 30 seconds has elapsed. Calculate with raw quantity.
  • Chromatopack C-R4A manufactured by Shimadzu Corporation was used as a computer for analyzing the combustion gas generation rate and the combustion gas generation amount.
  • tubular hatched parts 2 to 4 (length, 50cm, 30cm, 5cm, inner diameter are all in hardened sand (crushed sand) blended with furan greaves. 50 mm,) was buried to make a test mold 1.
  • the elbow part was made of earthenware.
  • 250 kg of molten metal at 1400 ° C was poured from the inlet side 5 and the blowback from the inlet side was visually evaluated in the following two stages.
  • Example 3 Except that the base paper was prepared with the following base paper composition, a tubular container manufacturing part having the same two-layer structure as in Example 3 was prepared. (The amount of organic fibers was doubled compared to Example 3 and a base paper was prepared without using a dispersant.) Then, the same evaluations as in Example 3 were performed on the obtained parts for the production of porridges. It was. Table 2 shows the results.
  • Inorganic powder mullite (E arm 'shea one bankruptcy Co., Ltd., mullite MM # 200), 47. 6 weight 0/0 inorganic fiber: carbon fiber (manufactured by Mitsubishi Chemical Corporation, pies port fill TR03CM), 4. 2 mass 0/0 organic fiber: Play wastepaper, 25.0 wt%
  • Thermosetting resin Resor phenol resin (Air Water, Bell Pearl S890), 16.7% by mass
  • Papermaking binder sponges, 3.0 mass 0/0
  • Papermaking binder CMC, 3.0% by mass
  • the content of organic fibers is suppressed, the generation of combustion gas at the time of forging is suppressed, and a part for producing porcelain with excellent formation is provided. Further, according to the present invention, it is possible to suitably manufacture a bowl manufacturing component that exhibits the above effects.
  • the present invention can be applied to various types of porcelain manufacturing parts and methods for manufacturing the same, such as receptacles, runners, weirs, vents, feeders, and main molds.

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Abstract

L'invention concerne un procédé de fabrication d'un composant pour la production de pièces coulées, qui comprend une étape de préparation d'une suspension dense de matières premières contenant une fibre inorganique, une fibre organique, une résine thermodurcissable, un liant papetier et un agent dispersant à base de sulfonate ou/et de cellulose. De préférence, la suspension dense de matières premières contient en plus une poudre inorganique ou/et un agent hydrofuge.
PCT/JP2006/323797 2005-11-30 2006-11-29 Composant pour la production de pièces coulées et son procédé de fabrication WO2007063888A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/085,686 US20090211717A1 (en) 2005-11-30 2006-11-29 Part for Producing Castings and Process of Making the Same
CN2006800440683A CN101316665B (zh) 2005-11-30 2006-11-29 铸件制造用部件及其制造方法
KR1020087012875A KR101205749B1 (ko) 2005-11-30 2006-11-29 주물 제조용 부품 및 그 제조 방법
EP06833601.5A EP1958717B1 (fr) 2005-11-30 2006-11-29 Composant pour la production de pièces coulées et son procédé de fabrication

Applications Claiming Priority (4)

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JP2005-346813 2005-11-30
JP2005-346814 2005-11-30
JP2005346813 2005-11-30
JP2005346814 2005-11-30

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WO2007063888A1 true WO2007063888A1 (fr) 2007-06-07

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US (1) US20090211717A1 (fr)
EP (1) EP1958717B1 (fr)
KR (1) KR101205749B1 (fr)
CN (1) CN101316665B (fr)
WO (1) WO2007063888A1 (fr)

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CN104338892A (zh) * 2013-07-31 2015-02-11 见得行股份有限公司 用于添加湿砂模的安定剂
CN104943243A (zh) * 2015-06-19 2015-09-30 姚伟 纸质浇注陶管的制备工艺
CN104985109A (zh) * 2015-07-06 2015-10-21 安徽三联泵业股份有限公司 一种泵体铸造用呋喃树脂负载纳米碳纤维改性型砂
CN105834367A (zh) * 2016-05-13 2016-08-10 湖州炜炎环保科技有限公司 一种铸造用纸质浇道管制备工艺
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EP1958717B1 (fr) 2019-01-09
US20090211717A1 (en) 2009-08-27
KR20080072013A (ko) 2008-08-05
EP1958717A1 (fr) 2008-08-20
CN101316665A (zh) 2008-12-03
CN101316665B (zh) 2011-04-27
EP1958717A4 (fr) 2011-04-13
KR101205749B1 (ko) 2012-11-28

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