JPS63264244A - Funnel for pouring molten metal - Google Patents
Funnel for pouring molten metalInfo
- Publication number
- JPS63264244A JPS63264244A JP9927487A JP9927487A JPS63264244A JP S63264244 A JPS63264244 A JP S63264244A JP 9927487 A JP9927487 A JP 9927487A JP 9927487 A JP9927487 A JP 9927487A JP S63264244 A JPS63264244 A JP S63264244A
- Authority
- JP
- Japan
- Prior art keywords
- funnel
- molten metal
- sand
- refractory granular
- casting
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 18
- 239000004576 sand Substances 0.000 claims abstract description 26
- 238000005266 casting Methods 0.000 claims abstract description 20
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 238000007711 solidification Methods 0.000 claims abstract 2
- 230000008023 solidification Effects 0.000 claims abstract 2
- 239000000843 powder Substances 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000013011 mating Effects 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 29
- 238000000034 method Methods 0.000 description 4
- 239000000123 paper Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000008119 colloidal silica Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010115 full-mold casting Methods 0.000 description 2
- 229910052845 zircon Inorganic materials 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B22C9/082—Sprues, pouring cups
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、砂型鋳型の湯口開口部が注湯された溶湯流に
よって部分的に崩れるのを防止するために使用される注
湯用漏斗に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a pouring funnel used to prevent the sprue opening of a sand mold from being partially collapsed by the flow of poured molten metal. .
(従来の技術とその問題点)
消失模型鋳造法や減圧鋳造法など、粘結剤を含まない鋳
砂、いわゆるドライサンドで形成された砂型鋳型を用い
る鋳造法においては、注湯の際、砂型鋳型の湯口開口部
が溶湯流によって崩され易く、・一旦崩れると崩れた鋳
砂が溶湯中に巻き込まれて砂かみなどの鋳造欠陥が生じ
る。(Conventional techniques and their problems) In casting methods that use a sand mold made of casting sand that does not contain a binder, so-called dry sand, such as the vanishing model casting method and the vacuum casting method, when pouring, the sand mold The sprue opening of the mold is easily collapsed by the flow of molten metal, and once it collapses, the collapsed casting sand gets caught up in the molten metal, causing casting defects such as sand pits.
このような鋳造欠陥の発生を防止するため、湯口開口部
に陶器(ムライト)製、自硬性砂製又はシェルモールド
製の注湯口や皿鉢を設置する場合が多い。In order to prevent such casting defects from occurring, a pouring spout or dish bowl made of ceramic (mullite), self-hardening sand, or shell mold is often installed at the sprue opening.
しかし、これらのものは、任意寸法のものを容易に製作
することができず、また造形用金型等を要するため、造
型コストが高くつき、延いては鋳造コストの上昇要因と
なっている。However, these products cannot be easily manufactured to any size and require a mold for shaping, resulting in high molding costs, which in turn causes an increase in casting costs.
本発明は、かかる問題点に鑑みなされたもので、砂型鋳
型の湯口開口部に、その大きさの如何に拘らず容易に作
製可能で、かつ低度な鋳砂崩壊防止手段を提供すること
を目的とする。The present invention has been made in view of these problems, and it is an object of the present invention to provide a means for preventing casting sand from collapsing to a low degree, which can be easily manufactured regardless of the size of the sprue opening of a sand mold. purpose.
(作 用)
漏斗本体の少なくとも内周面には耐火物粉粒層が形成さ
れているので、数秒程度の注湯時間においては、135
0〜1450℃程度の高温溶湯に対しても充分な耐熱性
を有し、漏斗本体が紙製であるにも拘らず、崩壊が生じ
ない。従って、本発明に係る注湯用漏斗を砂型鋳物の湯
口開口部に設置することによって、注湯時における前記
開口部の鋳砂の崩壊を有効に防止することができる。(Function) Since a layer of refractory powder particles is formed on at least the inner circumferential surface of the funnel body, 135
It has sufficient heat resistance even for high-temperature molten metal of about 0 to 1450°C, and does not collapse even though the funnel body is made of paper. Therefore, by installing the pouring funnel according to the present invention at the sprue opening of a sand mold casting, it is possible to effectively prevent the molding sand in the opening from collapsing during pouring.
また、漏斗本体は紙製であり、その少なくとも内周面に
形成される耐火物粉粒層も耐火物粉粒スラリーの塗布、
乾燥によって容易に形成することができるので、従来の
ように造形用金型は不要であり、注湯用漏斗の大きさの
如何に拘らず任意のものを低コストで作製することがで
きる。In addition, the funnel body is made of paper, and the refractory powder layer formed at least on the inner circumferential surface of the funnel body is also coated with refractory powder slurry.
Since it can be easily formed by drying, there is no need for a mold for shaping as in the past, and any pouring funnel can be manufactured at low cost regardless of its size.
(実施例)
次に図面を参照して、本発明の注湯用漏斗の実施例につ
いて説明する。(Example) Next, an example of the pouring funnel of the present invention will be described with reference to the drawings.
第1図は、截頭円錐形状の注湯用漏斗1を示しており、
該漏斗1は同形状の漏斗本体2の全周面に耐火物粉粒層
3が被着形成されている。FIG. 1 shows a truncated cone-shaped pouring funnel 1.
The funnel 1 has a funnel body 2 having the same shape and a layer 3 of refractory powder particles adhered to the entire circumferential surface of the funnel body 2.
前記漏斗本体2は、扇形に裁断した厚紙を截頭円錐形状
に丸めて合せ面を接着形成したものであり、上端に溶湯
受口4が形成され、下端に鋳型湯口とほぼ同径とされた
溶湯流下口5が形成されている。厚紙は、漏斗本体2を
取扱う際に変形しない程度の厚さのものでよく、ボール
紙、ケント祇等適宜のものを使用することができる。The funnel body 2 is made by cutting cardboard into a fan shape, rolling it into a truncated conical shape, and bonding the mating surfaces together.A molten metal socket 4 is formed at the upper end, and a diameter approximately the same as that of the mold sprue is formed at the lower end. A molten metal flow outlet 5 is formed. The cardboard may be thick enough not to deform when handling the funnel main body 2, and suitable materials such as cardboard and Kent paper can be used.
前記耐火物粉粒層3は、耐火物粉粒スラリーが前記漏斗
本体2に塗布され乾燥固化したものである。第1図は漏
斗本体2をスラリ一槽に浸漬して、その全周面にスラリ
ーを塗布し乾燥したものを示したが、塗布手段としてス
プレーや刷毛等を用いてもよく、またスラリーの塗布は
溶湯が通過する漏斗本体2の内周面だけでもよい。The refractory powder layer 3 is obtained by applying a refractory powder slurry to the funnel body 2 and drying and solidifying it. Although Fig. 1 shows the funnel body 2 immersed in a tank of slurry, and the slurry applied to the entire circumferential surface and dried, a spray, a brush, etc. may be used as the application means, and the slurry may be only the inner peripheral surface of the funnel body 2 through which the molten metal passes.
耐火物粉粒スラリーとしては、塗型基材として使用され
るジルコン砂、ケイ砂、黒鉛、コークス等の200〜3
50メツシュ程度の微粉末に、コロイダルシリカ、ベン
トナイト等を粘結剤として添加し、これらに水を加えて
スラリー状としたものを使用することができる。上記の
うちで、ジルコン砂、ケイ砂とコロイダルシリカとの組
み合せは、耐火性に優れた耐火物粉粒層を形成すること
ができ好適である。The refractory powder slurry includes zircon sand, silica sand, graphite, coke, etc., which are used as base materials for coating molds.
It is possible to use a product in which colloidal silica, bentonite, etc. are added as a binder to a fine powder of about 50 mesh, and water is added to the mixture to form a slurry. Among the above, combinations of zircon sand, silica sand, and colloidal silica are preferred because they can form a refractory powder particle layer with excellent fire resistance.
耐火物粉粒層3は、注湯温度、鋳込時間により適宜厚さ
に形成されるが、通常0.5〜2龍程度で中小物鋳鉄鋳
物(50kg程度以下)の鋳造が可能となる。The refractory powder particle layer 3 is formed to have an appropriate thickness depending on the pouring temperature and casting time, but usually a thickness of about 0.5 to 2 thick enables casting of small and medium-sized iron castings (about 50 kg or less).
尚、耐火物粉粒層3の強度や耐火性が不足する場合、一
層の厚串を厚くするより、スラリー塗布後、35〜48
メッシヱ程度のケイ砂等の鋳砂を未乾燥のスラリー塗布
面に付着させて鋳砂層を形成し、スラリーを乾燥固化さ
せた後、再びその上に耐火物粉粒層を形成するのがよい
。鋳砂層が芯の役目を成し、強度向上の効果が大きくな
るからである。In addition, if the strength or fire resistance of the refractory powder layer 3 is insufficient, it is better to use a layer of 35 to 48
It is preferable to apply a mesh size of casting sand such as silica sand to the undried slurry coating surface to form a casting sand layer, dry and solidify the slurry, and then form a refractory powder layer thereon again. This is because the casting sand layer acts as a core, increasing the strength improvement effect.
第2図は、本発明の注湯用漏斗1のフルモールド鋳造法
における使用例を示し、金枠11中に発泡スチロール等
で形成された製品模型12が配設され、その回りにドラ
イサンド13が充填されている。’14は、製品模型1
2に接着された湯口模型である。FIG. 2 shows an example of the use of the pouring funnel 1 of the present invention in a full mold casting method, in which a product model 12 made of foamed polystyrene or the like is placed in a metal frame 11, and dry sand 13 is placed around it. Filled. '14 is product model 1
This is the sprue model glued to 2.
(発明の効果)
以上説明した通り、本発明の注湯用漏斗は、漏斗本体を
紙材で形成し、少なくともその内周面に耐火物粉粒スラ
リーの乾燥固化により形成された耐火物粉粒層を被着し
たものであるから、砂型鋳型の湯口開口サイズに応じた
ものを容易に作製することができ、また、作製に当って
は従来のように造形金型も不要であり、生産コストの軽
減を図ることができる。(Effects of the Invention) As explained above, the pouring funnel of the present invention has a funnel body made of paper material, and refractory powder particles formed by drying and solidifying refractory powder slurry on at least the inner peripheral surface of the funnel body. Since the layer is coated, it is possible to easily manufacture a sand mold according to the sprue opening size, and there is no need for a shaping mold as in the conventional method, which reduces production costs. It is possible to reduce the
第1図は本発明の注湯用漏斗の断面図、第2図は同漏斗
の使用例を示すフルモールド鋳造用鋳型の断面説明図で
ある。
1・・・注湯用漏斗、2・・・漏斗本体、3・・・耐火
物粉粒層、4・・・溶湯受口、5・・・溶湯流下口。FIG. 1 is a sectional view of a pouring funnel of the present invention, and FIG. 2 is an explanatory sectional view of a full mold casting mold showing an example of use of the funnel. DESCRIPTION OF SYMBOLS 1... Funnel for pouring molten metal, 2... Funnel body, 3... Refractory powder particle layer, 4... Molten metal socket, 5... Molten metal flow port.
Claims (2)
有し、両者が連通状に形成された紙製の漏斗本体2の少
なくとも内周面に耐火物粉粒スラリーの乾燥固化により
形成された耐火物粉粒層3が被着されていることを特徴
とする注湯用漏斗。(1) Drying refractory powder slurry on at least the inner peripheral surface of the paper funnel body 2, which has a molten metal inlet 4 at the upper end and a molten metal outlet 5 at the lower end, both of which are formed in a communicating manner. A pouring funnel characterized by being coated with a refractory powder particle layer 3 formed by solidification.
砂層を介して他の耐火物粉粒層が形成されている特許請
求の範囲第1項記載の注湯用漏斗。(2) The pouring funnel according to claim 1, wherein another refractory powder layer is formed on the refractory powder layer 3 formed on the funnel body 2 via a casting sand layer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9927487A JPS63264244A (en) | 1987-04-22 | 1987-04-22 | Funnel for pouring molten metal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9927487A JPS63264244A (en) | 1987-04-22 | 1987-04-22 | Funnel for pouring molten metal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63264244A true JPS63264244A (en) | 1988-11-01 |
Family
ID=14243097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9927487A Pending JPS63264244A (en) | 1987-04-22 | 1987-04-22 | Funnel for pouring molten metal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63264244A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102407289A (en) * | 2011-11-23 | 2012-04-11 | 广州南鸥卫浴用品有限公司 | Gravity casting pouring gate structure of bent zinc alloy casting |
CN102861876A (en) * | 2012-10-10 | 2013-01-09 | 山西汤荣机械制造股份有限公司 | Device of direct pouring gate substitution feeder head in cast iron piece pouring system |
-
1987
- 1987-04-22 JP JP9927487A patent/JPS63264244A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102407289A (en) * | 2011-11-23 | 2012-04-11 | 广州南鸥卫浴用品有限公司 | Gravity casting pouring gate structure of bent zinc alloy casting |
CN102861876A (en) * | 2012-10-10 | 2013-01-09 | 山西汤荣机械制造股份有限公司 | Device of direct pouring gate substitution feeder head in cast iron piece pouring system |
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