JPH0347943B2 - - Google Patents
Info
- Publication number
- JPH0347943B2 JPH0347943B2 JP59185767A JP18576784A JPH0347943B2 JP H0347943 B2 JPH0347943 B2 JP H0347943B2 JP 59185767 A JP59185767 A JP 59185767A JP 18576784 A JP18576784 A JP 18576784A JP H0347943 B2 JPH0347943 B2 JP H0347943B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- slurry
- spherical
- product
- particle size
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002245 particle Substances 0.000 claims description 17
- 239000004576 sand Substances 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 12
- 239000012798 spherical particle Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 21
- 239000000377 silicon dioxide Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- -1 slagstone Inorganic materials 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 229910052851 sillimanite Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical class [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229920002253 Tannate Polymers 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000010443 kyanite Substances 0.000 description 1
- 229910052850 kyanite Inorganic materials 0.000 description 1
- 229940071264 lithium citrate Drugs 0.000 description 1
- WJSIUCDMWSDDCE-UHFFFAOYSA-K lithium citrate (anhydrous) Chemical compound [Li+].[Li+].[Li+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O WJSIUCDMWSDDCE-UHFFFAOYSA-K 0.000 description 1
- 150000002642 lithium compounds Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 150000003112 potassium compounds Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- ASEJRKSHHJBZRV-UHFFFAOYSA-O triazanium cyanide sulfate Chemical compound S(=O)(=O)([O-])[O-].[NH4+].[C-]#N.[NH4+].[NH4+] ASEJRKSHHJBZRV-UHFFFAOYSA-O 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Description
［産業上の利用分野］
本発明は鋳鉄、鋳鋼、アルミニウム、銅合金等
の鋳造用に使われる鋳物砂を工業的に合成し製造
する方法に関するものである。
［従来の技術とその問題点］
従来、鋳物砂としては天然に産するジルコンサ
ンド（ZrO2・SiO2、融点約1780℃）、クロマイト
（Cr2O3・FeO、融点約2000℃）と珪砂（SiO2、
融点約1750℃）等の粒子径が0.05〜1.5mm程度の
ものが用いられていた。しかしながらこれらは天
然産品であるために化学組成、物理的特性等の品
質のバラツキや必要粒度品の不足等の避けられな
い問題がある。そこで天然原料を塊状にしたもの
をロータリーキルン等で焼いてその後これを必要
粒度に粉砕したものもあつたが、その場合不必要
な微粒が多く発生するために歩留が悪い欠点があ
るほか、粒子が角状或いは針状の形態になるため
に流動性が悪く鋳物砂としての使用時に充填が不
均一になり易く、また鋳肌が荒れ易くなる等の欠
点があつた。
［問題点を解決するための手段］
そこで本発明は安定した品質の鋳物砂を工業的
に合成製造する方法を提供しようとするものであ
る。その目的を達成するため本発明は、製品の主
成分としてAl2O3が20〜70重量％、SiO2が80〜30
重量％になるように泥漿を配合し、該泥奨に解こ
う剤を添加してスプレードライヤーにより熱風中
に吹出し、粒子径が0.05〜2.0mmの球状粒を乾燥
造粒し、その後これをロータリーキルンにて焼結
してなることを特徴とした球状鋳物砂の製造方法
である。
以下本発明についてさらに詳しく説明すると、
まづ原料としては粘土鉱物（耐火粘土、クレー、
カオリン）、珪砂、バン土ケツ岩、ボーキサイト、
シリマナイト鉱物（アンダリユーサイト、カイア
ナイト、シリマナイト）、水酸化アルミニウム、
〓焼アルミナ等を用い、これらを相互に組み合
せ、鋳物砂として充分使用可能な化学組成
（Al2O3；20〜70重量％、SiO2；70〜30重量％、
その他の不純物（Fe2O3、TiO2、K2O、Na2O、
CaO、MaO等）が５重量％以下となるよう配合
する。例えば融点については、Al2O3；30重量
％、SiO2；68重量％、その他；２重量％では、
約1700℃でAl2O3；70重量％、SiO2；29重量％、
その他；１重量％では約1850℃である。配合が決
定されたものは泥漿状態に混合される。この時、
泥漿に解こう剤（苛性ソーダ、リン酸ソーダ、珪
酸ソーダ、タンニン酸ソーダ、アルミン酸ソーダ
等のソーダ化合物、水酸化リチウム、くえん酸リ
チウム等のリチウム化合物、水酸化カリウム、炭
酸カリウム等のカリウム化合物、蓚酸アンモン、
硫酸シアン化アンモン等のアンモニア化合物、ポ
リビニールアミン、ジエチルアミン等のアミン系
化合物）を0.01〜５重量％の範囲で添加すること
により泥漿の粘性を変化させ製品粒径を制御す
る。このようにして調整した泥しようをスプレー
ドライヤーにより熱風中に吹出し、0.05〜2.0mm
の球状に造粒乾燥させる。一般にスプレードライ
ヤーは、第１図に示したようにダクト４から350
〜450℃の熱風を室１に送り、該室１にノズル２
から泥漿を加圧状態で噴霧することにより表面張
力で球状となつた粒子を乾燥させ、球状の造粒乾
燥品として排出口３より取り出すものである。な
お５は排風ダクトである。その後造粒乾燥品をロ
ータリーキルンで焼成し、この球状で粒子径が
0.05〜2.0mmの焼結粒子を球状鋳物砂とする。こ
の焼結粒子は必要に応じてフルイ分け、目的の粒
度品として用いられる。
［実施例］
原料に粘土と水酸化アルミニウムを用いた。そ
の化学組成を表１に示す。
[Industrial Application Field] The present invention relates to a method for industrially synthesizing and manufacturing foundry sand used for casting cast iron, cast steel, aluminum, copper alloys, etc. [Conventional technology and its problems] Conventionally, naturally occurring zircon sand (ZrO 2・SiO 2 , melting point approximately 1780°C), chromite (Cr 2 O 3・FeO, melting point approximately 2000°C) and silica sand have been used as foundry sand. ( SiO2 ,
(melting point: approximately 1750°C) and particle diameters of approximately 0.05 to 1.5 mm were used. However, since these are natural products, there are unavoidable problems such as variations in quality such as chemical composition and physical properties, and shortages of necessary particle sizes. Therefore, there was a method in which a lump of natural raw materials was baked in a rotary kiln or the like and then pulverized to the required particle size, but in this case, many unnecessary fine particles were generated, resulting in a poor yield, and Because of its angular or acicular shape, it has poor fluidity and tends to be filled unevenly when used as foundry sand, and the casting surface tends to become rough. [Means for Solving the Problems] Therefore, the present invention aims to provide a method for industrially synthesizing foundry sand of stable quality. In order to achieve that purpose, the present invention uses 20 to 70% by weight of Al 2 O 3 and 80 to 30% by weight of SiO 2 as the main components of the product.
A peptizer is added to the slurry, and the slurry is blown into hot air using a spray dryer to dry and granulate spherical particles with a particle size of 0.05 to 2.0 mm, which are then placed in a rotary kiln. This is a method for producing spherical foundry sand characterized by sintering it in a process. The present invention will be explained in more detail below.
First, raw materials include clay minerals (fireclay, clay,
kaolin), silica sand, slagstone, bauxite,
Sillimanite minerals (andalyusite, kyanite, sillimanite), aluminum hydroxide,
= By using calcined alumina, etc., and combining them with each other, a chemical composition that can be used sufficiently as foundry sand ( Al2O3 : 20-70% by weight , SiO2 : 70-30% by weight,
Other impurities (Fe 2 O 3 , TiO 2 , K 2 O, Na 2 O,
(CaO, MaO, etc.) is blended so that it is 5% by weight or less. For example, regarding the melting point, Al2O3 : 30% by weight, SiO2 : 68% by weight, others: 2% by weight,
Al 2 O 3 ; 70% by weight, SiO 2 ; 29% by weight, at approximately 1700°C.
Others: At 1% by weight, the temperature is about 1850°C. Once the formulation has been determined, it is mixed into a slurry. At this time,
Add peptizers to the slurry (soda compounds such as caustic soda, sodium phosphate, sodium silicate, sodium tannate, and sodium aluminate; lithium compounds such as lithium hydroxide and lithium citrate; potassium compounds such as potassium hydroxide and potassium carbonate; ammonium oxalate,
By adding an ammonia compound such as ammonium sulfate cyanide, or an amine compound such as polyvinylamine or diethylamine in a range of 0.01 to 5% by weight, the viscosity of the slurry is changed and the particle size of the product is controlled. The slurry prepared in this way was blown out into hot air using a spray dryer, and the thickness was 0.05 to 2.0 mm.
Granulate and dry into spherical shapes. Generally, the spray dryer has duct 4 to 350 as shown in Figure 1.
~450℃ hot air is sent to chamber 1, and nozzle 2 is installed in chamber 1.
The slurry is sprayed under pressure from the slurry to dry the particles, which have become spherical due to surface tension, and are taken out from the discharge port 3 as spherical dried granulated products. Note that 5 is an exhaust duct. After that, the dried granulated product is fired in a rotary kiln, and the spherical particle size is reduced.
The sintered particles of 0.05 to 2.0 mm are used as spherical foundry sand. The sintered particles are sieved as necessary and used as a product with the desired particle size. [Example] Clay and aluminum hydroxide were used as raw materials. Its chemical composition is shown in Table 1.
【表】【table】
【表】 配合割合を表２に示す。【table】 The blending ratios are shown in Table 2.
【表】
混合はボールミルを用い湿式で２時間の混合を
行なつた。泥しようの比重は1.68ｇ／cm3、泥しよ
う中の固形分割合は66％であつた。スプレードラ
イヤーは加圧ノズル噴霧の向流式乾燥装置を用
い、泥しようを0.1〜1.0mmの球状粒子に造粒乾燥
させた。その粒度分布を表３に示した。[Table] Mixing was carried out in a wet manner for 2 hours using a ball mill. The specific gravity of the slurry was 1.68 g/cm 3 , and the solid content in the slurry was 66%. The spray dryer was a countercurrent type drying device with pressure nozzle spraying, and the slurry was granulated and dried into spherical particles of 0.1 to 1.0 mm. The particle size distribution is shown in Table 3.
【表】
造粒乾燥品はロータリーキルンにて約1550℃の
温度で焼成した。焼成品の物理的特性（0.5〜
0.297mmの粒子径のもの）を表４に、化学分析値
を表５に示した。[Table] The dried granulated product was fired in a rotary kiln at a temperature of approximately 1550°C. Physical properties of fired products (0.5~
Table 4 shows the particle diameter of 0.297 mm, and Table 5 shows the chemical analysis values.
【表】【table】
【表】【table】
【表】
また、第２図に焼成された製品の粒子構造の顕
微鏡写真を示したようにその外観は球状を呈して
いる。
［発明の効果］
本発明により製造された鋳物砂は粒子形が球状
で、その直径が0.05〜2.0mmに造粒したため流動
性に優れており、細部まで均一な充填が可能とな
り、鋳型製作において精密で、均一な組織を有す
る鋳型が生産可能となる、又、球状粒子形である
ことより鋳物の鋳はだが美しく仕上がる。更にロ
ータリーキルンにより各粒子は充分に焼結させら
れているため粒子強度は高くなつている。このこ
とにより、再度くり返し鋳物砂の使用が可能とな
る。更に工業的に合成して、製造するため球状と
いう一定形状を持つ品質の安定した必要粒度品の
供給が可能となるなど産業上有益なものである。[Table] Furthermore, as shown in FIG. 2, a microscopic photograph of the particle structure of the fired product, its appearance is spherical. [Effect of the invention] The molding sand produced according to the present invention has a spherical particle shape and is granulated with a diameter of 0.05 to 2.0 mm, so it has excellent fluidity and can be filled evenly in the details, making it suitable for mold manufacturing. It is possible to produce molds with a precise and uniform structure, and the spherical particle shape allows castings to be finished beautifully. Furthermore, since each particle is sufficiently sintered by the rotary kiln, the particle strength is high. This makes it possible to use the foundry sand again. Furthermore, since it is industrially synthesized and manufactured, it is possible to supply a product with a constant spherical shape and the required particle size with stable quality, which is industrially useful.
第１図は本発明にて使用されるスプレードライ
ヤーの概略を示した縦断面図、第２図は製品の粒
子構造を示した顕微鏡写真である。
FIG. 1 is a longitudinal sectional view schematically showing the spray dryer used in the present invention, and FIG. 2 is a microscopic photograph showing the particle structure of the product.
Claims (1)
SiO2が80〜30重量％になるように泥奨を配合し、
該泥奨に解こう剤を添加してスプレードライヤー
により熱風中に吹出し、粒子径が0.05〜2.0mmの
球状粒に造粒し、その後これをロータリーキルン
にて焼結してなることを特徴とした球状鋳物砂の
製造方法。1 20-70% by weight of Al 2 O 3 as the main component of the product,
Add mud so that SiO 2 is 80 to 30% by weight,
A peptizer was added to the slurry, which was then blown into hot air using a spray dryer to granulate it into spherical particles with a particle size of 0.05 to 2.0 mm, which was then sintered in a rotary kiln. Method for producing spherical foundry sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18576784A JPS6163333A (en) | 1984-09-05 | 1984-09-05 | Production of molding material for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18576784A JPS6163333A (en) | 1984-09-05 | 1984-09-05 | Production of molding material for casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6163333A JPS6163333A (en) | 1986-04-01 |
| JPH0347943B2 true JPH0347943B2 (en) | 1991-07-22 |
Family
ID=16176520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18576784A Granted JPS6163333A (en) | 1984-09-05 | 1984-09-05 | Production of molding material for casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6163333A (en) |
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| WO2004052572A1 (en) * | 2002-12-09 | 2004-06-24 | Kao Corporation | Spherical casting sand |
| JP2006150451A (en) * | 2004-11-02 | 2006-06-15 | Kao Corp | Ceramic particles |
| WO2014128981A1 (en) | 2013-02-19 | 2014-08-28 | 伊藤忠セラテック株式会社 | Method for modifying refractory molding particles and refractory molding particles obtained thereby and process for producing mold |
| US11236904B2 (en) | 2018-01-19 | 2022-02-01 | Itochu Ceratech Corporation | Bed medium for fluidized bed |
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| JP5297731B2 (en) | 2007-09-12 | 2013-09-25 | 花王株式会社 | Recycled casting sand manufacturing method |
| JP5075902B2 (en) * | 2009-10-05 | 2012-11-21 | キンセイマテック株式会社 | Mold sand and its manufacturing method |
| CN102179482B (en) * | 2011-01-24 | 2014-05-28 | 江苏兴盛重工有限公司 | Mould paint spraying device |
| JP6892284B2 (en) | 2017-02-28 | 2021-06-23 | ダイハツ工業株式会社 | Sand mold manufacturing method and casting sand |
| JP6880302B1 (en) | 2019-11-22 | 2021-06-02 | キンセイマテック株式会社 | Kit for casting sand and sand molds |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4967822A (en) * | 1972-11-02 | 1974-07-01 |
-
1984
- 1984-09-05 JP JP18576784A patent/JPS6163333A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4967822A (en) * | 1972-11-02 | 1974-07-01 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004052572A1 (en) * | 2002-12-09 | 2004-06-24 | Kao Corporation | Spherical casting sand |
| JP2006150451A (en) * | 2004-11-02 | 2006-06-15 | Kao Corp | Ceramic particles |
| JP4603463B2 (en) * | 2004-11-02 | 2010-12-22 | 花王株式会社 | Spherical casting sand |
| WO2014128981A1 (en) | 2013-02-19 | 2014-08-28 | 伊藤忠セラテック株式会社 | Method for modifying refractory molding particles and refractory molding particles obtained thereby and process for producing mold |
| US10456829B2 (en) | 2013-02-19 | 2019-10-29 | Itochu Ceratech Corporation | Method for modifying refractory molding particles and refractory molding particles obtained thereby and process for producing mold |
| US11236904B2 (en) | 2018-01-19 | 2022-02-01 | Itochu Ceratech Corporation | Bed medium for fluidized bed |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6163333A (en) | 1986-04-01 |
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