JPS6347395Y2 - - Google Patents
Info
- Publication number
- JPS6347395Y2 JPS6347395Y2 JP1983056780U JP5678083U JPS6347395Y2 JP S6347395 Y2 JPS6347395 Y2 JP S6347395Y2 JP 1983056780 U JP1983056780 U JP 1983056780U JP 5678083 U JP5678083 U JP 5678083U JP S6347395 Y2 JPS6347395 Y2 JP S6347395Y2
- Authority
- JP
- Japan
- Prior art keywords
- sand
- casting
- sheet material
- molten metal
- sand mold
- 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
Links
- 239000004576 sand Substances 0.000 claims description 57
- 238000005266 casting Methods 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 26
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 6
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 6
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 5
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 5
- 229910052845 zircon Inorganic materials 0.000 claims description 5
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 54
- 229910052751 metal Inorganic materials 0.000 description 18
- 239000002184 metal Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 9
- 238000009413 insulation Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 6
- 206010010904 Convulsion Diseases 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 235000014380 magnesium carbonate Nutrition 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- -1 chromite Chemical compound 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
Description
【考案の詳細な説明】
本考案は鋳造砂型の改良に関するものであり、
砂型に断熱性を付与し、凝固鋳物との剥離性に優
れ、且つ圧縮性と断熱性を具備する鋳造砂型保護
断熱用シート材に関するものである。[Detailed description of the invention] This invention relates to the improvement of casting sand molds.
The present invention relates to a sheet material for protecting and insulating casting sand molds, which provides heat insulation properties to sand molds, has excellent peelability from solidified castings, and has compressibility and heat insulation properties.
従来の鋳造砂型、すなわち鋳物砂及び中子砂の
特性は鋳物の歩留り、品質等に重大な影響を及ぼ
すため、鋳物砂及び中子砂の品質には種々の考慮
が払われている。例えば鋳物砂と中子砂の基本的
特性として、全般的強度が適切であること、表面
強度が適切なものであり、その製作と保存と鋳込
み作業に際して、型や中子が機械的、化学的作用
を受け、部分的損傷とこぼれ落ちを起こさないこ
と、型の表面砂粒がこぼれ落ちる性質の場合に
は、それ自体鋳物の欠陥につながり、くぼみとざ
ら鋳肌や砂きずあるいは機械的焼付きなどを伴
う。通気性が適切であり、溶融金属内のガスやあ
るいは砂型自身から生じる水蒸気やガスが抜ける
ことが必要であり、通気性が極端に少ない場合に
は鋳物内にガス孔をもたらすことが知られてい
る。 Since the characteristics of conventional casting sand molds, that is, foundry sand and core sand, have a significant effect on the yield, quality, etc. of castings, various considerations are taken into the quality of foundry sand and core sand. For example, the basic properties of foundry sand and core sand include appropriate overall strength and appropriate surface strength. If the sand grains on the surface of the mold tend to fall off, it will itself lead to defects in the casting, such as dents and rough casting surfaces, sand scratches, or mechanical seizures. Accompany. Adequate ventilation is required to allow the escape of gases in the molten metal or water vapor and gases generated from the sand mold itself; extremely low ventilation is known to lead to gas pores in the casting. There is.
さらに、砂型と中子のガス発生度が大きい場
合、ガス孔を持つ鋳物の出現の危険度が大きくな
る。 Furthermore, if the degree of gas generation in the sand mold and core is high, the risk of the appearance of castings with gas holes is increased.
次に、若干の圧縮性を有することが必要であ
り、圧縮性が少ない場合、鋳物に亀裂を発生させ
ることになる。 Next, it is necessary to have some compressibility; if the compressibility is low, cracks will occur in the casting.
以上の如き条件を満足させるべく従来より、石
英砂にバインダーとしてフエノール樹脂あるいは
フラン樹脂を用いたレジン系砂型や、石英砂にバ
インダーとして水ガラスを用いた水ガラス系砂型
等が一般的に使用されると共に、砂型の溶鉄と接
する外表面に、黒鉛、クロム鉄鉱、マグネサイ
ト、クロムマグネサイト等が砂型と溶湯との焼付
き防止を目的として塗布されている。 In order to satisfy the above conditions, resin-based sand molds using quartz sand with phenol resin or furan resin as a binder, and water glass-based sand molds using quartz sand with water glass as a binder have been commonly used. In addition, graphite, chromite, magnesite, chromium magnesite, etc. are applied to the outer surface of the sand mold that comes into contact with the molten iron for the purpose of preventing seizure between the sand mold and the molten metal.
しかしながら、従来の砂型には焼付き防止材を
塗布するにもかかわらず、下記の問題があつた。 However, even though the conventional sand mold is coated with an anti-seize material, the following problems have occurred.
(1) 表面精度並びに表面強度が不充分であり、砂
型の表面砂粒のこぼれ落ちが発生し、その結果
鋳物のくぼみ、ざら鋳肌、砂かみ、砂きず、さ
らに砂型と溶湯との焼付きが発生する。そのた
め、鋳造後鋳物の表面切削加工が必要となり、
一般的には鋳物重量の約1〜2割の切削表面処
理を必要とする。(1) Insufficient surface precision and surface strength, causing sand grains to fall off the surface of the sand mold, resulting in depressions in the casting, rough casting surface, sand spots, sand scratches, and seizure between the sand mold and the molten metal. do. Therefore, surface cutting of the casting is required after casting.
Generally, cutting surface treatment of approximately 10 to 20% of the weight of the casting is required.
(2) 圧縮性が不充分であり、凝固鋳物の収縮作用
に応じて逐次体積を減じる特性が不充分であ
り、鋳物表面に亀裂が発生する。(2) Compressibility is insufficient, and the property of successively reducing the volume in response to the contraction of solidified castings is insufficient, resulting in cracks on the casting surface.
(3) 焼付き防止材塗布効果が不充分であり鋳物表
面に鋳型材料が溶着し、鋳物の表面に凹凸ある
いはざら肌をもたらす。さらに砂型が粗粒砂の
場合、砂型の気孔内に溶湯が侵入し、一層ざら
肌となる。(3) The anti-seize coating effect is insufficient, and the mold material adheres to the surface of the casting, resulting in uneven or rough surfaces. Furthermore, if the sand mold is made of coarse-grained sand, the molten metal will enter the pores of the sand mold, resulting in an even rougher surface.
(4) 水蒸気あるいはガスの発生が鋳型表面に直接
影響を与え、発生ガスと溶湯との接触により鋳
肌面が荒れる。(4) The generation of steam or gas directly affects the mold surface, and the contact between the generated gas and the molten metal causes the casting surface to become rough.
(5) 砂型の断熱性が不充分であり凝固鋳物の表面
組織が鋳物内部組織と異なる。(5) The insulation of the sand mold is insufficient, and the surface structure of the solidified casting is different from the internal structure of the casting.
等の問題があつた。There were other problems.
この考案は、上記の問題を解決すべくなされた
ものであつて、セラミツクフアイバーと酸化ジル
コニウム、酸化クロム、ジルコンの1種または2
種以上を主成分として成る圧縮性、断熱性並びに
溶湯との非焼付き性を具備したシート材を従来の
砂型の溶湯と接する外表面に配設することによ
り、鋳物の外表面にざら肌あるいは凹凸の発生が
無く、且つ亀裂も発生が無く、さらに断熱性を付
与することによる鋳物内部及び外表面の組織差を
低減させる鋳造用砂型保護断熱用シート材を提供
するものである。 This invention was made to solve the above problem, and consists of ceramic fiber and one or two types of zirconium oxide, chromium oxide, and zircon.
By arranging a sheet material, which is mainly composed of carbon dioxide and has compressibility, heat insulation properties, and non-stick properties with the molten metal, on the outer surface of the conventional sand mold that comes into contact with the molten metal, the outer surface of the casting is free from roughness or roughness. The object of the present invention is to provide a sheet material for protecting and insulating sand molds for casting, which does not generate unevenness and cracks, and further reduces the structural difference between the inside and outside surfaces of castings by imparting heat insulation properties.
次にこの考案をその実施例を示した図面に基づ
いて具体的に説明する。第1図及び第2図は本考
案による砂型構造の断面を示すものであり、第1
図は中子を使用する砂型の場合を示し、1は鋳枠
2は鋳物砂、3は溶湯、4は中子砂、5は本考案
のシート材層を示す。 Next, this invention will be specifically explained based on drawings showing examples thereof. Figures 1 and 2 show cross sections of the sand mold structure according to the present invention.
The figure shows the case of a sand mold using a core, in which numeral 1 indicates a casting flask 2 of foundry sand, 3 indicates a molten metal, 4 indicates core sand, and 5 indicates a sheet material layer of the present invention.
第2図は中子を使用しない砂型の場合を示し、
1は鋳枠、2は鋳物砂、3は溶湯、5は本考案の
シート材層を示す。 Figure 2 shows the case of a sand mold that does not use a core.
1 is a casting flask, 2 is foundry sand, 3 is a molten metal, and 5 is a sheet material layer of the present invention.
この考案にる鋳造砂型保護断熱用シート材には
下記の効果がある。 The casting sand mold protection and insulation sheet material according to this invention has the following effects.
(1) 表面精度良好であり、且つ溶湯と砂型が直接
接触しないが故に、砂型砂粒のこぼれ落ちが無
く、鋳物のくぼみ、ざら鋳肌、砂かみ、砂きず
等が発生しない。そのため、鋳造後鋳物の表面
切削加工をほとんど必要とせず精密鋳造が可能
である。(1) Since the surface accuracy is good and the molten metal and sand mold do not come into direct contact, there is no spillage of sand grains from the sand mold, and no dents, rough casting surfaces, sand traps, sand scratches, etc. occur in the casting. Therefore, precision casting is possible with almost no need for surface cutting of the casting after casting.
(2) シート材5が約5割の圧縮性を有しているた
め、凝固鋳物の収縮作用に応じて体積を減ずる
物性が充分であり、鋳物表面に亀裂発生が全く
無くなる。(2) Since the sheet material 5 has a compressibility of about 50%, it has sufficient physical properties to reduce the volume in response to the contraction of the solidified casting, and no cracks will occur on the surface of the casting.
(3) シート材5に含有されるジルコニア、酸化ク
ロム、ジルコン等と溶湯との濡れ難さよりシー
ト材5と溶湯との焼着現象が見られないと共
に、シート材5が溶湯と砂型との間に介在する
ため、当然砂型と溶湯との焼付きも皆無であ
る。またシート材5の気孔径小なるが故に、シ
ート材5の気孔への溶湯の侵入も全く見られな
い。(3) Due to the difficulty of wetting the molten metal with zirconia, chromium oxide, zircon, etc. contained in the sheet material 5, there is no burning phenomenon between the sheet material 5 and the molten metal, and the sheet material 5 is not easily wetted between the molten metal and the sand mold. Naturally, there is no seizure between the sand mold and the molten metal. Further, since the pore diameter of the sheet material 5 is small, no intrusion of molten metal into the pores of the sheet material 5 is observed.
(4) 砂型より発生する水蒸気あるいはガスと溶湯
との接触がシート材5によりさえぎられるた
め、発生ガスによる鋳物の肌荒れ現象を充分防
ぐことができる。(4) Since contact between the water vapor or gas generated from the sand mold and the molten metal is blocked by the sheet material 5, roughening of the surface of the casting caused by the generated gas can be sufficiently prevented.
(5) シート材5の配設により砂型の断熱性が大幅
に向上し、凝固鋳物の内部と外表面の組織差が
極端に低減する。(5) By arranging the sheet material 5, the heat insulation properties of the sand mold are greatly improved, and the difference in structure between the inside and outside surface of the solidified casting is extremely reduced.
等の効果を示す。It shows the effects of
本考案のシート材5はセラミツクフアイバーと
酸化ジルコニウム、酸化クロム、ジルコンの1種
または2種以上より成る主原料にアルミナゾル、
シリカゾル、合成樹脂エマルジヨン、ゴムラテツ
クスの1種または2種以上を添加し、抄造法によ
りシート状に成形乾燥してなることを特徴とする
シート材を用いることができる。またセラミツク
フアイバーのみであらかじめ抄造法によりシート
状に成形乾燥して得たセラミツクフアイバーシー
トに酸化ジルコニウム、酸化クロム、ジルコンの
1種または2種以上より成る主原料にアルミナゾ
ル、シリカゾル、合成樹脂エマルジヨン、ゴムラ
テツクスの1種または2種以上を添加して成る泥
漿を含浸した後乾燥して得ることもできる。 The sheet material 5 of the present invention is made of ceramic fiber and one or more of zirconium oxide, chromium oxide, and zircon as main raw materials, and alumina sol,
It is possible to use a sheet material that is formed by adding one or more of silica sol, synthetic resin emulsion, and rubber latex, and forming and drying the sheet into a sheet by a papermaking method. In addition, a ceramic fiber sheet obtained by forming and drying a ceramic fiber into a sheet using a sheet-forming method, and a main raw material consisting of one or more of zirconium oxide, chromium oxide, and zircon, as well as alumina sol, silica sol, synthetic resin emulsion, and rubber latex. It can also be obtained by impregnating a slurry containing one or more of the following and then drying it.
本考案のシート材5の好適条件は下記の通りで
ある。 Preferable conditions for the sheet material 5 of the present invention are as follows.
(1) シート材の厚さは1mm〜30mmの間であること
が好ましく、1mmより小なる場合にはシート配
設による断熱効果が不充分であると共に、圧縮
性が不充分となり鋳物表面に微細亀裂を発生さ
せやすい。30mmより大なる場合には、対象とな
る鋳物の全体形状の調整が困難となり、形状コ
ントロールが難しくなる。(1) The thickness of the sheet material is preferably between 1 mm and 30 mm. If the thickness is less than 1 mm, the insulation effect of the sheet will be insufficient, and the compressibility will be insufficient, causing fine particles to form on the surface of the casting. Easy to cause cracks. If it is larger than 30 mm, it will be difficult to adjust the overall shape of the target casting, making shape control difficult.
(2) シート材5の圧縮率とは、厚さ方向の寸法変
化可能量(%)であり、その値は80〜50%であ
ることが好ましく、50%より小なる場合には可
縮性不充分となり、鋳物に亀裂が発生しやす
い。また80%より大なる場合には断熱性が不充
分となり鋳物内部と外表面の組織差を生じる傾
向が現われる。(2) The compressibility of the sheet material 5 is the amount (%) of possible dimensional change in the thickness direction, and the value is preferably 80 to 50%, and if it is less than 50%, it is compressible. It becomes insufficient and cracks are likely to occur in the casting. If it exceeds 80%, the insulation properties will be insufficient and there will be a tendency for a difference in structure between the inside and outside surface of the casting.
実施例
圧延ロール鋳造用砂型の構造を本考案の構造
(第2図にその断面を示した)とし鋳込みを行な
つた。その際、シート材はセラミツクフアイバー
30重量部、酸化ジルコニウム70重量部、アルミナ
ゾル5重量部、酢酸ビニル樹脂エマルジヨン5重
量部を水200重量部中に懸濁させ、抄造法により
成形した後100℃にて乾燥して得た7mm厚、圧縮
度60%のジルコニア質シート材を使用した。鋳造
凝縮後の鋳物とシート材5との焼付き現象は全く
見られず、鋳物表面の亀裂も皆無であり、砂か
み、砂肌等当然無く、鋳物内部及び外表面の組織
差が極端に少ない鋳物を鋳造することができた。
なお、鋳物の表面切削加工は従来の砂型構造の場
合、1〜2割の重量割合を必要とするのに比べ、
本考案構造により鋳造した鋳物は切削加工をほと
んど必要とせず極端な鋳物表面精度を必要とする
用途に対する切削加工量も約1〜2%重量比にす
ぎなかつた。EXAMPLE Casting was carried out using a sand mold for rolling roll casting having the structure of the present invention (the cross section of which is shown in FIG. 2). At that time, the sheet material is ceramic fiber.
30 parts by weight of zirconium oxide, 70 parts by weight of zirconium oxide, 5 parts by weight of alumina sol, and 5 parts by weight of vinyl acetate resin emulsion were suspended in 200 parts by weight of water, formed by a papermaking method, and dried at 100°C to obtain a 7 mm thick product. A zirconia sheet material with a degree of compression of 60% was used. There is no seizure phenomenon between the casting and the sheet material 5 after casting condensation, there are no cracks on the surface of the casting, there are of course no sand spots or sandy surfaces, and there are extremely few structural differences between the inside and outside surface of the casting. It was possible to cast metals.
In addition, compared to the conventional sand mold structure, which requires a weight ratio of 10 to 20% for surface cutting of castings,
The castings cast according to the structure of the present invention require almost no cutting work, and the amount of cutting work required for applications requiring extreme casting surface precision is only about 1 to 2% by weight.
第1図及び第2図は本考案による砂型構造の断
面を示すものであり、1は鋳枠、2は鋳物砂、3
は溶湯、4は中子砂、5は本考案のシート材層を
示す。
Figures 1 and 2 show cross-sections of the sand mold structure according to the present invention, in which 1 is a casting flask, 2 is a molding sand, and 3 is a sand mold structure according to the present invention.
4 indicates the molten metal, 4 indicates the core sand, and 5 indicates the sheet material layer of the present invention.
Claims (1)
鋳造用鋳物砂2及び中子砂4の溶鉄3と接する外
表面に装着した、セラミツクフアイバーと酸化ジ
ルコニウム、酸化クロム、ジルコンの1種または
2種以上を主成分として成る圧縮率80−50%並び
に断熱性を具備した鋳造砂型保護断熱用シート
材。 In resin-based sand molds or water glass-based sand molds,
Compressibility of 80-50% and consisting mainly of ceramic fiber and one or more of zirconium oxide, chromium oxide, and zircon, attached to the outer surface of the foundry sand 2 and core sand 4 in contact with the molten iron 3; A sheet material for protecting and insulating casting sand molds with heat insulating properties.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5678083U JPS59165743U (en) | 1983-04-18 | 1983-04-18 | Casting sand mold protection insulation sheet material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5678083U JPS59165743U (en) | 1983-04-18 | 1983-04-18 | Casting sand mold protection insulation sheet material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59165743U JPS59165743U (en) | 1984-11-07 |
JPS6347395Y2 true JPS6347395Y2 (en) | 1988-12-07 |
Family
ID=30187099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5678083U Granted JPS59165743U (en) | 1983-04-18 | 1983-04-18 | Casting sand mold protection insulation sheet material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59165743U (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4002200B2 (en) * | 2002-03-13 | 2007-10-31 | 花王株式会社 | Papermaking parts for casting production |
JP4471629B2 (en) | 2002-11-13 | 2010-06-02 | 花王株式会社 | Manufacturing method of parts for casting production |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5077415A (en) * | 1973-09-28 | 1975-06-24 | ||
JPS516204A (en) * | 1974-07-05 | 1976-01-19 | Maeda Iron Works | |
JPS5215417A (en) * | 1975-07-25 | 1977-02-05 | Inc Keminkon | Heattinsulating molded article |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4998410U (en) * | 1972-12-16 | 1974-08-24 |
-
1983
- 1983-04-18 JP JP5678083U patent/JPS59165743U/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5077415A (en) * | 1973-09-28 | 1975-06-24 | ||
JPS516204A (en) * | 1974-07-05 | 1976-01-19 | Maeda Iron Works | |
JPS5215417A (en) * | 1975-07-25 | 1977-02-05 | Inc Keminkon | Heattinsulating molded article |
Also Published As
Publication number | Publication date |
---|---|
JPS59165743U (en) | 1984-11-07 |
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