JPH0343929B2 - - Google Patents
Info
- Publication number
- JPH0343929B2 JPH0343929B2 JP456087A JP456087A JPH0343929B2 JP H0343929 B2 JPH0343929 B2 JP H0343929B2 JP 456087 A JP456087 A JP 456087A JP 456087 A JP456087 A JP 456087A JP H0343929 B2 JPH0343929 B2 JP H0343929B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- hole
- cast
- casting
- resistant
- 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
- 238000005266 casting Methods 0.000 claims description 29
- 239000011248 coating agent Substances 0.000 claims description 20
- 239000012210 heat-resistant fiber Substances 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 229920001187 thermosetting polymer Polymers 0.000 claims description 14
- 230000009970 fire resistant effect Effects 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 8
- 239000011162 core material Substances 0.000 description 37
- 238000000034 method Methods 0.000 description 22
- 229910052751 metal Inorganic materials 0.000 description 19
- 239000002184 metal Substances 0.000 description 19
- 239000004576 sand Substances 0.000 description 11
- 238000000465 moulding Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は鋳造品の鋳抜き孔の成型方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for forming a hole in a cast product.
鋳造品によつては、鋳造後の機械加工が困難な
場合、あるいはこれらの加工の面倒さや煩雑さ等
を避けるため、鋳造時に中子を用いて鋳抜き孔を
形成するものがある。
For some cast products, if machining after casting is difficult, or in order to avoid the trouble and complexity of such machining, there are some that use a core to form holes during casting.
（） 一般に、上記のような鋳抜き孔の成型
は、砂等の耐火材で形成された中子を使用して
成型するが、このような砂の中子を使用して鋳
抜き孔を成型するものでは、鋳抜き孔の最小径
は３mmが限度であり、それ以下の微細な鋳抜き
孔を成型することは不可能である。() In general, casting holes as described above are molded using a core made of a refractory material such as sand. The minimum diameter of the cast hole is limited to 3 mm, and it is impossible to mold a cast hole smaller than 3 mm.
更にまた、砂の中子では崩壊性が悪く、たと
え内部で崩壊したとしても鋳抜き孔の内壁に砂
が残り（脱砂）、シヨツト等の後処理が必要と
なり、脱砂のために余分な作業を必要とする。 Furthermore, the sand core has poor collapsibility, and even if it collapses internally, sand will remain on the inner wall of the casting hole (desanding), requiring post-processing such as shot, and unnecessary waste for sanding. Requires work.
（） そこで、耐火材の砂により小径で長い鋳
抜き孔の形状に成型するとゝもに、該砂の中に
コイルの金属線を埋設して中子を形成し、金属
線により中子の抜脱の容易さ、確実化等を目的
としたものがある（特公昭57−55504号公報）。() Therefore, we molded the refractory sand into the shape of a small diameter and long casting hole, buried the metal wire of the coil in the sand to form a core, and used the metal wire to extract the core. There is one aimed at making escape easier and more reliable (Special Publication No. 57-55504).
しかし、上記の砂及びコイル状の金属線を使
用した中子では、鋳抜き孔の径を小さくするこ
とには限度があるので、微細な鋳抜き孔を形成
することがでないし、中子材料に砂を使用して
いるので、引抜きの際に引抜き孔の中に砂が残
留するという問題点があつた。 However, in the cores using the sand and coiled metal wire mentioned above, there is a limit to how small the diameter of the punched holes can be made, so it is not possible to form fine punched holes, and the core material Since sand is used in the hole, there is a problem in that sand remains in the hole during extraction.
（） 更に、中子として金属製中空管の外周に
低熱伝導率の脆弱材料の被覆材で被覆する。そ
して、この中子を鋳型内に配置して注湯した
後、中空管内に注湯金属と温度差を有する流体
を通し、その内外の温度差により被覆材料を自
己破壊させた後、中空管を引抜くことにより鋳
抜き孔を形成するようにしたものがある（特開
昭57−85638号公報）。() Furthermore, the outer periphery of the metal hollow tube as the core is covered with a coating material made of a brittle material with low thermal conductivity. After placing this core in a mold and pouring metal, a fluid having a temperature difference with the pouring metal is passed through the hollow tube, and the coating material self-destructs due to the temperature difference between the inside and outside, and then the hollow tube There is one in which a cast hole is formed by pulling out the cast hole (Japanese Patent Application Laid-open No. 85638/1983).
（） また、溶湯により、溶融、溶損しない物
質で構成された１本の細線を鋳型の所定の位置
に配置し、溶湯を注湯後、凝固する過程で細線
を所定の張力を付加しながら引抜くことによ
り、鋳造品に鋳抜き孔を形成するようにしたも
のがある（特開昭58−202964号公報）。() In addition, a thin wire made of a substance that will not be melted or damaged by the molten metal is placed in a predetermined position in the mold, and after pouring the molten metal, the thin wire is applied with a predetermined tension during the solidification process. There is a method in which a hole is formed in a cast product by drawing it out (Japanese Patent Laid-Open No. 58-202964).
しかし、この発明では、溶湯の凝固する過程
で細線を所定の張力を付加しながら引抜くの
で、溶湯の硬化後の鋳抜き孔の正確さがきし難
いという問題点があつた。 However, in this invention, since the thin wire is pulled out while applying a predetermined tension during the solidification process of the molten metal, there is a problem in that it is difficult to accurately form the casting hole after the molten metal hardens.
（） 更には、第６図及び第７図に示すような
消失模型鋳造方法による鋳放し孔の成型方法が
ある。() Furthermore, there is a method of forming an as-cast hole using a vanishing model casting method as shown in FIGS. 6 and 7.
これは所望の消失模型Ａをビーズ発泡成型品で
形成し、この消失模型Ａに所定径の孔Ｂを貫通せ
しめた後、この孔Ｂに塗型剤Ｃを流し込んで砂鋳
型Ｄに入れ、消失模型Ａ内に溶湯を注湯して消失
模型Ａと溶湯とを交換せしめて鋳放し孔Ｅを有す
る鋳造品Ｆを成型するものである。 This is done by forming a desired vanishing model A using bead foam molding, making a hole B of a predetermined diameter pass through the vanishing model A, pouring a coating agent C into the hole B, placing it in a sand mold D, and vanishing. Molten metal is poured into the model A and the melt is exchanged with the disappearing model A to form a cast product F having an as-cast hole E.
しかし、この方法は、塗型剤Ｃのみで鋳放し孔
Ｅを形成するものであるため、強度的に弱く、微
細な孔を形成するには限界がある。また、精度が
要求される鋳放し孔Ｅの形成には信頼性が低いと
いつた欠点がある。 However, since this method forms the as-cast pores E only with the mold coating agent C, it is weak in strength and has a limit in forming fine pores. Furthermore, the formation of the as-cast hole E, which requires precision, has the drawback of low reliability.
本発明は上記の如き従来の問題点を解決するた
めに成されたもので、その要旨は、複数本の極細
の耐熱性繊維を結束し、その外周に熱硬化性樹脂
をコーテイングして所望形状に固化せしめるとゝ
もに、該熱硬化性樹脂の外周に引抜き代の耐火塗
型剤をコーテイングして鋳抜き孔用の中子を構成
し、該中子を鋳型の所定位置に配置して鋳造後、
前記中子を引抜いて鋳抜き孔を形成するようにし
たことを特徴とする鋳抜き孔の成型方法にある。
The present invention was made to solve the above-mentioned conventional problems, and its gist is to bind a plurality of ultra-fine heat-resistant fibers, coat the outer periphery with a thermosetting resin, and create a desired shape. Once solidified, the outer periphery of the thermosetting resin is coated with a fire-resistant molding agent to allow for drawing out to form a core for the casting hole, and the core is placed at a predetermined position in the mold. After casting,
A method for forming a cast hole, characterized in that the core is pulled out to form the cast hole.
以下、本発明を第１図及び第２図に示す実施例
に基づいて詳細に説明する。尚、第１図のイ，
ロ，ハ，ニは、本発明に係る鋳抜き孔の成型方法
において使用される微細孔を成型するための中子
の成型過程の説明図で、第２図のイ，ロは同中子
を使用した鋳物の鋳造法を示す説明図である。
Hereinafter, the present invention will be explained in detail based on the embodiments shown in FIGS. 1 and 2. In addition, in Fig. 1,
B, C, and D are explanatory diagrams of the molding process of a core for molding fine holes used in the casting hole molding method according to the present invention, and A and B of FIG. FIG. 3 is an explanatory diagram showing the casting method used.
上記の図面において、１は中子で、その製造方
法について第１図のイ，ロ，ハ，ニを参照して説
明する。 In the above drawings, reference numeral 1 denotes a core, and a method for manufacturing the core will be described with reference to A, B, C, and D in FIG.
まず、第１図イ及びロに示すように、複数本の
極細な耐熱性繊維２を引き揃えた後、その両端部
を除いて、上記と同質の耐熱性繊維３により螺旋
状に巻付けて所定の太さに結束する。 First, as shown in Figure 1 A and B, a plurality of ultra-fine heat-resistant fibers 2 are arranged, and then, except for both ends, they are spirally wrapped with heat-resistant fibers 3 of the same quality as above. Tie it to the specified thickness.
この場合、前記耐熱性繊維２，３としては、例
えば炭素繊維や炭化珪素繊維などの無機質耐熱繊
維を使用するが、このうち炭素繊維を用いる場合
には、この繊維の直径が約9mμであるので、これ
を約200本程度引揃え、この多数の炭素繊維２，
２を同質の繊維３により螺旋状に巻き付けて結束
し、直径0.5mmの太さの束に形成する。 In this case, as the heat-resistant fibers 2 and 3, inorganic heat-resistant fibers such as carbon fibers and silicon carbide fibers are used, but when carbon fibers are used, the diameter of these fibers is about 9 mμ. , about 200 of these were assembled, and this large number of carbon fibers 2,
2 are spirally wound and bound with homogeneous fibers 3 to form a bundle with a diameter of 0.5 mm.
ついで、第１図のハで示すように、上記の結束
された耐熱性繊維２（以下、耐熱性繊維束とい
う）の外周に、フエノールレジン等の熱硬化性樹
脂４を加熱し流動状態で均一な厚さにコーテイン
グする。これは、耐熱性繊維束２を鋳抜き孔の形
状に合わせた所望形状に形成し、その形状を固化
するためである。したがつて、熱硬化性樹脂の他
に樹脂性接着剤などを用いてもよい。 Next, as shown by C in FIG. 1, a thermosetting resin 4 such as phenol resin is heated around the outer periphery of the bundled heat-resistant fibers 2 (hereinafter referred to as a heat-resistant fiber bundle) to uniformly form a fluid state. Coating to a certain thickness. This is to form the heat-resistant fiber bundle 2 into a desired shape that matches the shape of the casting hole, and to solidify that shape. Therefore, a resin adhesive or the like may be used in addition to the thermosetting resin.
更に、同図のニに示すように、上記の熱硬化樹
脂４の外周に、鋳造後に耐熱性繊維束２を引出す
ための引き代として、デイツピングにより耐火塗
型剤５をコーテイングした後、乾燥させて微細な
鋳抜き孔用の中子１が完成する。 Furthermore, as shown in FIG. 2, the outer periphery of the thermosetting resin 4 is coated with a fire-resistant coating agent 5 by dipping to provide a pull margin for pulling out the heat-resistant fiber bundle 2 after casting, and then dried. A core 1 for a fine cast hole is completed.
ここで、鋳抜き孔の直径および形状、直線、途
中の曲がりの有無などによつて調整するが、熱硬
化性樹脂４のコーテイング厚さは0.05〜0.5mm、
又耐火塗型剤５のコーテイング厚さは0.1〜2.0mm
の厚さにそれぞれ塗布する。なお、図面中６は鋳
型、７は鋳型６のキヤビテイ、８は鋳造品、９は
鋳抜き孔である。 Here, the coating thickness of the thermosetting resin 4 is adjusted from 0.05 to 0.5 mm, although it is adjusted depending on the diameter and shape of the cast hole, whether it is straight, whether there is a bend in the middle, etc.
Also, the coating thickness of fireproof coating agent 5 is 0.1 to 2.0 mm.
Apply each coat to the thickness of . In the drawings, 6 is a mold, 7 is a cavity of the mold 6, 8 is a cast product, and 9 is a cast hole.
次に、上記の実施例について、第２図を参照し
てその作用を説明するに、鋳型６のキヤビテイ７
内の所定の位置に、上記中子１を配置するとゝも
に、該中子１の両端部は、キヤビテイ７の外に突
出されている。 Next, the operation of the above embodiment will be explained with reference to FIG. 2.
When the core 1 is placed at a predetermined position within the cavity 7, both ends of the core 1 protrude outside the cavity 7.
このような状態で、鋳型６のキヤビテイ７内に
溶湯を流し込むと、中子１の熱硬化性樹脂４が溶
湯によつて燃焼するとゝもに、該熱硬化性樹脂４
の上に塗布した耐火塗型剤５も同じく溶湯によつ
てその結晶水が分解される。 When molten metal is poured into the cavity 7 of the mold 6 in this state, the thermosetting resin 4 of the core 1 is burned by the molten metal, and the thermosetting resin 4
Similarly, the water of crystallization of the fireproof coating agent 5 applied thereon is decomposed by the molten metal.
その結果、耐火塗型剤５は強度がなくなつて粉
末状態となり、硬化した溶湯と耐熱性繊維束２の
外周との間にはこの耐火塗型剤５の粉末によつて
満たされた空隙が形成される。そしてこのとき、
耐熱性繊維束２は酸素の少ない雰囲気にあるため
に酸化が少なく、これを引き抜くのに必要な強度
と可撓性が充分残つている。 As a result, the fire-resistant coating agent 5 loses its strength and becomes a powder, and a void filled with the powder of the fire-resistant coating agent 5 is created between the hardened molten metal and the outer periphery of the heat-resistant fiber bundle 2. It is formed. And at this time,
Since the heat-resistant fiber bundle 2 is in an oxygen-poor atmosphere, there is little oxidation, and sufficient strength and flexibility necessary to pull it out remain.
したがつて、溶湯が硬化した後、鋳型６から鋳
造品８を取り出し、該鋳造品８から中子１を引き
抜く場合にも、その耐熱性繊維束２は該鋳造品８
との間に耐火塗型剤５の粉末によつて満たされた
空隙が形成されているため、鋳抜き孔９が図示の
ように直線状の場合は勿論のこと、後述する曲線
状の場合でも容易に引抜くことができるとゝも
に、鋳抜き孔９内に残留物がない。なお、この中
子１は鋳鉄（Fc）、鋳鋼（Sc）及び鋳アルミ
（Ac）の鋳造に使用することができる。 Therefore, even when the cast product 8 is taken out from the mold 6 and the core 1 is pulled out from the cast product 8 after the molten metal has hardened, the heat-resistant fiber bundle 2 remains in the cast product 8.
Since a gap filled with the powder of the fire-resistant coating agent 5 is formed between the casting hole 9 and the hole 9, it can be formed not only in a straight shape as shown in the figure, but also in a curved shape as described later. It can be easily pulled out and there is no residue inside the cast hole 9. Note that this core 1 can be used for casting cast iron (Fc), cast steel (Sc), and cast aluminum (Ac).
第３図に示すものは他の実施例の中子１で、上
記の中子１は直線形成であつたが、この実施例の
中子１は曲線形状に形成されており、この他の点
は上記の実施例と同様である。
What is shown in FIG. 3 is a core 1 of another embodiment. The core 1 described above was formed in a straight line, but the core 1 of this embodiment was formed in a curved shape, and other points is similar to the above embodiment.
また第４図及び第５図に示すものは更に他の実
施例で、消失模型鋳造法による鋳放し孔（鋳抜き
孔）の成型方法であり、１０はビーズ発泡成型品
により所望の形状に形成した消失模型である。 Moreover, what is shown in FIG. 4 and FIG. 5 is still another embodiment, which is a method of forming as-cast holes (cast holes) by the disappearing model casting method, and 10 is formed into a desired shape by a bead foam molded product. This is a disappearing model.
そして、この消失模型１０内に上述の中子１を
貫通せしめた後、この消失模型１０を砂型鋳型６
内に入れ、消失模型１０内に溶湯を注湯すると、
消失模型１０は気化して溶湯と交換される。 After the above-mentioned core 1 is penetrated into this vanishing model 10, this vanishing model 10 is placed in a sand mold 6.
When the molten metal is poured into the vanishing model 10,
The disappearing model 10 is vaporized and replaced with molten metal.
溶湯が硬化した後、中子１を引き抜くと鋳放し
孔９を有する鋳造品８が得られる。その他の点に
ついては、上記の実施例と同様である。 After the molten metal has hardened, the core 1 is pulled out to obtain a cast product 8 having as-cast holes 9. Other points are similar to the above embodiments.
この方法により成型すると、中子１を消失模型
１０に直接差し込むだけの簡単な作業により、精
度及び信頼性の高い微細な鋳放し孔９を有する鋳
造品を得ることが出来る。 When molded by this method, a cast product having fine as-cast holes 9 with high accuracy and reliability can be obtained by simply inserting the core 1 directly into the disappearing model 10.
本発明に係る鋳抜き孔の成型方法は、上記のよ
うに、複数本の極細の耐熱性繊維を結束し、その
外周に熱硬化性樹脂をコーテイングして所望形状
に固化せしめるとゝもに、該熱硬化性樹脂の外周
に引抜き代の耐火塗型剤をコーテイングして鋳抜
き孔用の中子を構成し、該中子を鋳型の所定位置
に配置して鋳造後、前記中子を引抜いて鋳抜き孔
を形成するようにしたものである。
As described above, the method for forming a cast hole according to the present invention involves bundling a plurality of ultrafine heat-resistant fibers, coating the outer periphery of the fibers with a thermosetting resin, and solidifying them into a desired shape. A core for the casting hole is formed by coating the outer periphery of the thermosetting resin with a fire-resistant coating agent for a pull-out allowance, and the core is placed in a predetermined position of the mold and after casting, the core is pulled out. A cast hole is formed by drilling the hole.
(1) 即ち、極細の耐熱性繊維を結束して中子の芯
材を形成したので、任意の径を有する微細な鋳
抜き孔、例えば最小径0.2mmまでの鋳放し孔が
容易に形成できる。(1) In other words, since the core material of the core is formed by bundling ultra-fine heat-resistant fibers, it is possible to easily form fine cast holes with arbitrary diameters, for example, as-cast holes with a minimum diameter of 0.2 mm. .
(2) 耐熱性繊維束は可撓性があるため、これを所
望形状に形成することが出来るとゝもに、その
形状を熱硬化性樹脂により固化するものである
ため、目的に適合した任意形状で且つ正確な鋳
放し孔を容易に形成できる。(2) Because the heat-resistant fiber bundle is flexible, it can be formed into a desired shape, and since that shape is solidified with thermosetting resin, it can be formed into any shape that suits the purpose. A well-shaped and accurate as-cast hole can be easily formed.
(3) また、中子に砂を使用していないので、鋳抜
き孔内に残留物がなく、鋳抜きの際の脱砂の処
理が全く必要でない。したがつて、それだけ工
数を省略化することができる。(3) Furthermore, since no sand is used in the core, there is no residue in the casting hole, and there is no need for sand removal during casting. Therefore, the number of man-hours can be reduced accordingly.
(4) 更に、引抜き代として耐火塗型剤を使用する
ので、中子の引き抜きが容易に行える、といつ
た諸効果がある。(4) Furthermore, since a fire-resistant coating agent is used as a pull-out allowance, there are various effects such as the fact that the core can be easily pulled out.
第１図のイ，ロ，ハ，ニは本発明に係る鋳抜き
孔の成型方法において使用される微細孔を成型す
るための中子の成型過程の説明図、第２図のイ，
ロは同中子を使用した鋳物の鋳造法を示す説明
図、第３図は他の実施例の中子を示す縦断面図、
第４図は更に他の実施例による鋳造品の鋳造法を
示す縦断面図、第５図は同鋳造法により成型され
た鋳造品の斜視図、第６図は従来の鋳造品の鋳造
法を示す縦断面図、第７図は同鋳造法により成型
された鋳造品の斜視図である。
１……中子、２，３……耐熱性繊維、４……熱
硬化性樹脂、５……耐火塗型剤、６……鋳型、７
……キヤビテイ、８……鋳造品、９……鋳抜き
孔、１０……消失模型。
A, B, C, and D in FIG. 1 are explanatory diagrams of the molding process of a core for molding fine holes used in the casting hole molding method according to the present invention, and A, B, and D in FIG.
B is an explanatory diagram showing a casting method using the same core, FIG. 3 is a longitudinal sectional view showing a core of another embodiment,
FIG. 4 is a longitudinal cross-sectional view showing a method of casting a cast product according to another embodiment, FIG. 5 is a perspective view of a cast product molded by the same casting method, and FIG. The longitudinal sectional view shown in FIG. 7 is a perspective view of a cast product molded by the same casting method. 1... Core, 2, 3... Heat-resistant fiber, 4... Thermosetting resin, 5... Fire-resistant coating agent, 6... Mold, 7
...Cavity, 8...Cast product, 9...Cast hole, 10...Disappeared model.
Claims (1)
周に熱硬化性樹脂をコーテイングして所望形状に
固化せしめるとゝもに、該熱硬化性樹脂の外周に
引抜き代の耐火塗型剤をコーテイングして鋳抜き
孔用の中子を構成し、該中子を鋳型の所定位置に
配置して鋳造後、前記中子を引抜いて鋳抜き孔を
形成するようにしたことを特徴とする鋳抜き孔の
成型方法。1. Bundle a plurality of ultra-fine heat-resistant fibers, coat the outer periphery with a thermosetting resin and solidify it into the desired shape, and apply a fire-resistant coating agent around the outer periphery of the thermosetting resin to allow for pulling out. The casting is characterized in that the coating is applied to form a core for a casting hole, and the core is placed at a predetermined position in a mold, and after casting, the core is pulled out to form a casting hole. How to form a punch hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP456087A JPS63174757A (en) | 1987-01-12 | 1987-01-12 | Formation of hole as cast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP456087A JPS63174757A (en) | 1987-01-12 | 1987-01-12 | Formation of hole as cast |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63174757A JPS63174757A (en) | 1988-07-19 |
| JPH0343929B2 true JPH0343929B2 (en) | 1991-07-04 |
Family
ID=11587428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP456087A Granted JPS63174757A (en) | 1987-01-12 | 1987-01-12 | Formation of hole as cast |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63174757A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0833947A (en) * | 1994-07-20 | 1996-02-06 | Calp Corp | Core and production of formed mold using this core |
| WO2005102560A2 (en) * | 2004-04-20 | 2005-11-03 | Tenedora Nemak, S.A. De C.V. | Method and apparatus for casting aluminum engine blocks with cooling liquid passage in ultra thin interliner webs |
| CN103691888B (en) * | 2013-12-12 | 2019-05-03 | 中国兵器工业第五九研究所 | A kind of composite core shapes the casting method of special-shaped pore |
-
1987
- 1987-01-12 JP JP456087A patent/JPS63174757A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63174757A (en) | 1988-07-19 |
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