JPS62244549A - Filter for iron-series molten metal having molten metal additive - Google Patents
Filter for iron-series molten metal having molten metal additiveInfo
- Publication number
- JPS62244549A JPS62244549A JP8663586A JP8663586A JPS62244549A JP S62244549 A JPS62244549 A JP S62244549A JP 8663586 A JP8663586 A JP 8663586A JP 8663586 A JP8663586 A JP 8663586A JP S62244549 A JPS62244549 A JP S62244549A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- filter
- forming part
- mesh filter
- iron
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 56
- 239000002184 metal Substances 0.000 title claims abstract description 56
- 239000000654 additive Substances 0.000 title claims abstract description 26
- 230000000996 additive effect Effects 0.000 title claims abstract description 23
- 239000003365 glass fiber Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 27
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 239000002923 metal particle Substances 0.000 claims description 3
- 239000002054 inoculum Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 7
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 239000004753 textile Substances 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 239000002759 woven fabric Substances 0.000 description 6
- 229910001018 Cast iron Inorganic materials 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 229910001208 Crucible steel Inorganic materials 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000010306 acid treatment Methods 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
- 239000003054 catalyst Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
- B01D39/086—Filter cloth, i.e. woven, knitted or interlaced material of inorganic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
- B22D1/007—Treatment of the fused masses in the supply runners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0457—Specific fire retardant or heat resistant properties
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ねずみ鋳鉄や球状黒鉛鋳鉄等の鋳鉄および黒
鉛鋳鋼等の鉄系溶湯用フィルターに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a filter for cast iron such as gray cast iron and spheroidal graphite cast iron, and iron-based molten metal such as graphite cast steel.
（従来の技術）
従来、ＳｉＯ□含有量の低いガラス繊維を網目状に織製
した網状織布にフェノール樹脂等の同化剤を被着させて
保形性を付与した網状フィルターがある。(Prior Art) Conventionally, there is a mesh filter in which a mesh-like woven fabric made of glass fibers with a low SiO□ content is coated with an assimilating agent such as a phenol resin to impart shape retention.
この網状フィルターは、アルミやその合金等の低融点金
属溶湯濾過用フィルターとして使用され、溶湯中のノロ
等の除去作用が優れているため注目されている。This mesh filter is used as a filter for filtering molten metals with low melting points such as aluminum and its alloys, and is attracting attention because of its excellent ability to remove slag and the like from the molten metal.
（発明が解決しようとする問題点）
しかしながら、かかる網状フィルターは、耐熱性に劣る
ので、高融点の鉄系溶湯濾適用フィルタ−として使用す
ることができない。(Problems to be Solved by the Invention) However, such a mesh filter has poor heat resistance and cannot be used as a filter for filtering high melting point iron-based molten metal.
そこで、本発明者は、特願昭６０−２３５０３２号にお
いて、高融点溶湯に対しても使用できるガラス繊維製網
状フィルターを提案した。Therefore, in Japanese Patent Application No. 60-235032, the present inventor proposed a glass fiber mesh filter that can be used even for high melting point molten metals.
本発明者によって提案された網状フィルターは、ガラス
繊維中の５ｉ０２含有量を上げることにより耐熱性を向
上させ、高融点金属溶湯に対しても適用可能にしたもの
である。The reticulated filter proposed by the present inventor has improved heat resistance by increasing the 5i02 content in the glass fibers, making it applicable to high-melting point molten metals.
前記網状フィルターは、通常、砂型鋳型の湯口や湯道経
路の途中で、鋳型の上型と下型との見切り面に配置され
る。The reticular filter is usually placed in the middle of the sprue or runner route of the sand mold, on the parting surface between the upper and lower molds of the mold.
この際、網状フィルターの中心部と湯口等の経路横断面
中心部とを一致させるのが難しく、上型と下型とによっ
て挟持される網状フィルターの周縁部の面積割合が周縁
において均等になりにくく、注湯中に、周縁部の一部が
溶湯流路中にずれ込む場合が生じる。こうなると周縁部
のずれ込みは益々大きくなり、これに伴って鋳砂が溶湯
中に混入したり、濾過されない溶湯が増大するという問
題があった。At this time, it is difficult to align the center of the mesh filter with the center of the cross-section of the channel such as a sprue, and it is difficult to make the area ratio of the periphery of the mesh filter sandwiched between the upper mold and the lower mold equal around the periphery. During pouring, a part of the periphery may slip into the molten metal flow path. In this case, the deviation of the peripheral edge becomes larger and larger, and this causes problems such as casting sand getting mixed into the molten metal and an increase in the amount of molten metal that is not filtered.
また、鋳型に注湯中の鉄系溶湯へ溶湯添加剤を添加する
場合、添加剤供給装置設置上および安全上の問題点があ
る。Furthermore, when adding molten metal additives to molten iron metal that is being poured into a mold, there are problems in terms of installation of the additive supply device and safety.
すなわち、注湯溶湯流中へ、鋳造組織を改善するためＦ
ｅ−３ｉ等の接種剤を添加したり、また球状黒鉛鋳鉄溶
湯におけるフェーディングを防止するために黒鉛球状化
剤を添加したり、また所期の合金組成を有する鋳鉄や鋳
鋼を溶製するために合金形成用の金属粒子を微量添加す
る場合等がある。In other words, F is poured into the molten metal flow to improve the casting structure.
Adding inoculants such as e-3i, adding graphite nodularizing agents to prevent fading in molten graphite cast iron, and melting cast iron or cast steel with the desired alloy composition. In some cases, a small amount of metal particles for forming an alloy are added to the alloy.
かかる場合、供給装置は、注湯用の溶湯取鍋に近接して
設置されるため、高温に曝露され、装置の老朽化が著し
い。また、供給装置は、鋳型−ヒ部の狭隘で、塵芥の多
い場所に設置されるため、安全上も問題がある。In such a case, since the supply device is installed close to the molten metal ladle for pouring, it is exposed to high temperatures, resulting in significant deterioration of the device. Furthermore, since the feeding device is installed in a narrow and dusty area of the mold, there is also a safety problem.
本発明はかかる問題点に鑑みなされたもので、網状フィ
ルターの鋳型への配設が容易で、かつ溶湯添加剤供給装
置の設置に伴う問題点を解消することができる鉄系溶湯
用フィルターを折供することを目的とする。The present invention was made in view of these problems, and is a foldable filter for iron-based molten metal that can easily be installed in a mold and that can solve the problems associated with installing a molten metal additive supply device. The purpose is to provide
（問題点を解決するための手段）
軟土の目的を達成するために講じられた本発明の鉄系溶
湯用フィルターの特徴とするところは、５ｉ０２含有量
が７５重量％以上のガラス繊維で形成された網状織布に
保形性が付与された網状フィルター２と、鋳型の湯口又
は湯道に嵌合可能な成形部３とからなり、
前記網状フィルター２の中央部２ａが前記成形部３に埋
設されると共にその周縁部２ｂが成形部３の外部に露出
され、
前記成形部３は溶湯添加剤４が混合された消失性模型材
料で形成されている点にある。(Means for Solving the Problems) The feature of the filter for iron-based molten metal of the present invention, which was taken to achieve the purpose of soft soil, is that it is made of glass fiber with a 5i02 content of 75% by weight or more. It consists of a mesh filter 2 made of a mesh woven fabric with shape retention properties, and a molded part 3 that can be fitted into a sprue or runner of a mold, and the center part 2a of the mesh filter 2 is connected to the molded part 3. While being buried, the peripheral edge 2b thereof is exposed to the outside of the molded part 3, and the molded part 3 is formed of a fugitive model material mixed with a molten metal additive 4.
（実施例）
第１図は、本発明実施例に係る鉄系溶湯用フィルター１
を示しており、外形が円形の網状フィルター２と、円柱
形に成形された成形部３とで構成されている。(Example) Fig. 1 shows a filter 1 for iron-based molten metal according to an example of the present invention.
The filter is composed of a mesh filter 2 having a circular outer shape and a molded part 3 having a cylindrical shape.
そして、網状フィルター２の中央部２ａが成形部３の軸
方向中央部において軸方向の垂直方向に埋設されており
、網状フィルター２の周縁部２ｂが成形部３の外部に一
様な面積割合で同心状に露出している。The center portion 2a of the mesh filter 2 is embedded in the axially central portion of the molded portion 3 in the axial direction, and the peripheral edge portion 2b of the mesh filter 2 is located outside the molded portion 3 with a uniform area ratio. exposed concentrically.
本発明において、成形部は第１図のように円柱形のもの
に限らず、湯口や湯道に嵌合可能なように、その断面形
状に応じて角柱形状等の適宜の形状とされる。また、網
状フィルターも外形が円形のものに限らず、成形部の横
断面形状に応じて、これとほぼ相僚形状に形成すればよ
い。In the present invention, the molded part is not limited to a cylindrical shape as shown in FIG. 1, but may have an appropriate shape such as a prismatic shape depending on its cross-sectional shape so that it can be fitted into a sprue or a runner. Further, the net-like filter is not limited to having a circular outer shape, but may be formed into a shape substantially compatible with the cross-sectional shape of the molded part.
網状フィルター２は、ＳｉＯ□含有量が７５重量％以上
のガラス長繊維を束ねて織製された網状織布に、固化剤
が被着されて保形性が付与されたものを用いる。The reticular filter 2 is made of a reticular woven fabric woven by bundling long glass fibers with an SiO□ content of 75% by weight or more, and a solidifying agent is applied thereto to impart shape retention.
ＳｉＯ□組成を７５重量％以上にするのは、１４５０℃
以下のあらゆる種類の鋳鉄溶湯に適合させるためである
。５ｉ０２が高純度のものでは、１５００℃以上の鋳鋼
材溶湯に対しても適合可能になる。ここに、適合とは溶
湯中に２０秒間浸漬しても繊維がノロ化しないことをい
う。前記２０秒間は、通常、注湯時間はこの程度以下で
あるところから設定されたものである。The SiO□ composition is set to 75% by weight or more at 1450°C.
This is to make it compatible with all types of molten cast iron. If 5i02 is of high purity, it can be applied to molten cast steel at 1500°C or higher. Here, compatibility means that the fibers do not turn into slag even when immersed in molten metal for 20 seconds. The above-mentioned 20 seconds was set because the pouring time is usually within this range.
尚、ガラス繊維のＳｔｏｗ含有量を上げるには、ガラス
繊維に酸性処理を施せばよい。すなわち、塩酸、硝酸、
硫酸などの酸性溶液に反応促進のための触媒を加えた溶
液中に、シリカを主成分としたガラス繊維を浸漬し、温
度、時間、酸性溶液の濃度をコントロールしながら不純
物であるＣａＯ、ＭｇＯ。Incidentally, in order to increase the Stow content of the glass fibers, the glass fibers may be subjected to acid treatment. i.e. hydrochloric acid, nitric acid,
Glass fibers mainly composed of silica are immersed in an acidic solution such as sulfuric acid and a catalyst to promote the reaction, and impurities such as CaO and MgO are removed while controlling the temperature, time, and concentration of the acidic solution.
Ｆｅ２ ＯＮ＋ Ｃｒｚ Ｏｔ＋ Ｎａｚ Ｏ＋ ’
Ｋ、ｏ、 ＴｉＯ２，Ｂ２０＊など含有率を下げ、そ
の結果として５ｉ０２の含有量を上げるのである。Fe2 ON+ Crz Ot+ Naz O+ '
The content of K, o, TiO2, B20*, etc. is lowered, and as a result, the content of 5i02 is increased.
網状織布の目開きサイズは、溶湯中のノロやスラグ等の
大きさにもよるが、１ｉＩｌ常、０．４〜４−で充分で
ある。The opening size of the reticulated woven fabric depends on the size of slag, slag, etc. in the molten metal, but 0.4 to 4 is usually sufficient.
網状織布に保形性を与えるための同化剤としては、酸性
ノボラック系フェノールレジン、中性フェノールレジン
、澱粉糊、酸性シリカゾル溶液等を例示できる。Examples of the assimilating agent for imparting shape retention to the reticulated woven fabric include acidic novolak phenol resin, neutral phenol resin, starch paste, and acidic silica sol solution.
前記網状フィルター２が埋設される成形部３は溶湯添加
剤が混合された消失性模型材料で形成されている。第１
図において、４が成形部３中の溶湯添加剤である。The molded part 3 in which the mesh filter 2 is embedded is made of a fugitive model material mixed with a molten metal additive. 1st
In the figure, 4 is a molten metal additive in the molding section 3.
消失性模型材料としては、発泡スチレンやりソクス等を
例示することができる。Examples of the fugitive model material include styrene foam, socks, and the like.
溶湯添加剤としては、Ｆｅ−３ｉ系接着剤、Ｍｇ粒等の
黒鉛球状化剤、合金形成用の金属粒子等を挙げることが
できる。溶湯添加剤の大きさは、網状フィルター２の目
開きサイズ以下とされるが、通常２〜５φｌの粒状品が
よい。溶湯添加剤の成形部３における容積率は特に限定
されない。必要な量を成形部３に埋入させればよい。Examples of molten metal additives include Fe-3i adhesives, graphite spheroidizing agents such as Mg particles, and metal particles for forming alloys. The size of the molten metal additive is set to be equal to or smaller than the opening size of the mesh filter 2, but granular products of 2 to 5 φl are usually preferable. The volume ratio of the molten metal additive in the molding section 3 is not particularly limited. What is necessary is just to embed the required amount into the molding part 3.
成形部３に網状フィルター２を埋設する手段の一例とし
ては、軸方向２分割の成形型を用いて、該成形型の軸方
向中心が網状フィルターの中心部を通るようにして、分
割面に網状フィルターを介在させ、型締めした後、成形
型に溶湯添加剤を混合した消失性模型材料を注入すれば
よい。An example of a means for embedding the mesh filter 2 in the molding part 3 is to use a mold that is divided into two parts in the axial direction, with the axial center of the mold passing through the center of the mesh filter, and to embed the mesh filter 2 in the split surface. After interposing a filter and clamping the mold, a fugitive model material mixed with a molten metal additive may be injected into the mold.
以上説明した実施例に係る鉄系溶湯用フィルター１は、
第２図のように、その成形部３を上型２１の湯口２３ａ
と下型２２の湯口２３ｈとに嵌め込めば、湯口と網状フ
ィルター２の中央部２ａとが正確かつ容易に位置決めさ
れる。従って、網状フィルター２の周縁部２ｂが見切り
面２４上で上型２１および下型２２によってバランスよ
く挟持される。尚、同図において、２５は湯道、２６は
製品鋳造空間、２７は押湯部鋳造空間、２８は湯口底で
ある。The filter 1 for iron-based molten metal according to the embodiment described above is as follows:
As shown in FIG. 2, the molding part 3 is
By fitting it into the sprue 23h of the lower mold 22, the sprue and the center portion 2a of the mesh filter 2 can be accurately and easily positioned. Therefore, the peripheral edge 2b of the mesh filter 2 is held on the parting surface 24 by the upper mold 21 and the lower mold 22 in a well-balanced manner. In the figure, 25 is a runner, 26 is a product casting space, 27 is a feeder casting space, and 28 is a sprue bottom.
湯口２３ａの上部開口より溶湯を注入すれば、成形部３
を構成する消失性模型材料は気化消失し、成形部３中の
溶湯系添加剤４が溶湯流へ自然に添加される。この際、
溶湯は網状フィルター２によって濾過され、溶湯中のノ
ロ、スラグ等の異物が製品鋳造空間２６へ流入すること
がない。If the molten metal is injected from the upper opening of the sprue 23a, the forming part 3
The fugitive model material constituting the molding material disappears by vaporization, and the molten metal additive 4 in the molding part 3 is naturally added to the molten metal flow. On this occasion,
The molten metal is filtered by the mesh filter 2, and foreign matter such as slag and slag in the molten metal does not flow into the product casting space 26.
（発明の効果）
以上説明した通り、本発明の鉄系溶湯用フィルターを構
成する網状フィルターは、濾材として高純度の５ｉ０２
含有のガラス繊維によって織製された網状織布を用いて
いるので、耐熱性に優れ、高融点の鋳鉄や鋳鋼溶湯中の
異物を濾過除去することができる。(Effects of the Invention) As explained above, the mesh filter constituting the filter for iron-based molten metal of the present invention uses high-purity 5i02 as a filter medium.
Since it uses a net-like woven fabric woven from glass fibers contained in it, it has excellent heat resistance and can filter out foreign substances in cast iron or molten cast steel with a high melting point.
また、網状フィルターの中央部は湯口又は湯道に嵌合可
能な成形部に埋設されているので、成形部を湯口等に設
置するだけで、網状フィルターの周縁部が鋳型によって
簡単かつバランスよく挟持される。In addition, the center part of the mesh filter is embedded in a molded part that can fit into the sprue or runner, so just by installing the molded part in the sprue, etc., the periphery of the mesh filter can be easily and well-balanced by the mold. be done.
また、成形部は溶湯添加剤が入った消失性模型材料で形
成されているので、注湯した溶湯に所定量の添加剤を容
易に添加できる。この際、溶湯は前記網状フィルターに
よって濾過されたものであり、また製品に近い部分で添
加できるので、添加効果に優れる。従って、従来のよう
に、添加剤供給装置が不必要となり、設備費用の低減、
安全性の向上が図られる。Further, since the molding part is formed of a fugitive model material containing a molten metal additive, a predetermined amount of the additive can be easily added to the poured molten metal. At this time, the molten metal has been filtered by the reticular filter and can be added close to the product, so the addition effect is excellent. Therefore, unlike in the past, an additive supply device is no longer necessary, reducing equipment costs.
Safety will be improved.
第１図は本発明実施例に係る鉄系溶湯用フィルターの全
体斜視図、第２図は同フィルターが設置された砂型鋳型
の断面説明図を示す。
１・・・鉄系溶湯用フィルター、２・・・網状フィルタ
ー、２ａ・・・中央部、２ｂ・・・周縁部、３・・・成
形部、４・・・溶湯添加剤。FIG. 1 is an overall perspective view of a filter for iron-based molten metal according to an embodiment of the present invention, and FIG. 2 is an explanatory cross-sectional view of a sand mold in which the filter is installed. DESCRIPTION OF SYMBOLS 1... Filter for iron-based molten metal, 2... Reticulated filter, 2a... Center part, 2b... Peripheral part, 3... Molded part, 4... Molten metal additive.
Claims (4)
で形成された網状織布に保形性が付与された網状フィル
ター２と、鋳型の湯口又は湯道に嵌合可能な成形部３と
からなり、 前記網状フィルター２の中央部２ａが前記成形部３に埋
設されると共にその周縁部２ｂが成形部３の外部に露出
され、 前記成形部３は溶湯添加剤４が混合された消失性模型材
料で形成されていることを特徴とする溶湯添加剤を有す
る鉄系溶湯用フィルター。(1) A reticular filter 2 made of glass fiber with a SiO_2 content of 75% by weight or more and a shape-retaining property, and a molded part 3 that can be fitted into the sprue or runner of the mold. The central part 2a of the reticulated filter 2 is embedded in the molded part 3, and the peripheral part 2b is exposed to the outside of the molded part 3, and the molded part 3 is a fugitive model in which the molten metal additive 4 is mixed. A filter for iron-based molten metal having a molten metal additive characterized by being formed of a material.
請求の範囲第１項記載の溶湯添加剤を有する鉄系溶湯用
フィルター。(2) A filter for iron-based molten metal having a molten metal additive according to claim 1, wherein the molten metal additive is an inoculant.
る特許請求の範囲第１項記載の溶湯添加剤を有する鉄系
溶湯用フィルター。(3) A filter for iron-based molten metal having a molten metal additive according to claim 1, wherein the molten metal additive is a graphite nodularizing agent.
特徴とする特許請求の範囲第１項記載の溶湯添加剤を有
する鉄系溶湯用フィルター。(4) A filter for iron-based molten metal having a molten metal additive according to claim 1, wherein the molten metal additive is metal particles for forming an alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8663586A JPS62244549A (en) | 1986-04-14 | 1986-04-14 | Filter for iron-series molten metal having molten metal additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8663586A JPS62244549A (en) | 1986-04-14 | 1986-04-14 | Filter for iron-series molten metal having molten metal additive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62244549A true JPS62244549A (en) | 1987-10-24 |
Family
ID=13892479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8663586A Pending JPS62244549A (en) | 1986-04-14 | 1986-04-14 | Filter for iron-series molten metal having molten metal additive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62244549A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4955427A (en) * | 1989-05-15 | 1990-09-11 | Amenex Associates, Inc. | Placement of particulates onto refractory filters for liquid metals |
| EP0410586A2 (en) * | 1989-07-22 | 1991-01-30 | Foseco International Limited | Filters |
| US5033531A (en) * | 1989-07-26 | 1991-07-23 | Foseco International Limited | Casting of molten iron and filters for use therein |
| WO2004042090A1 (en) * | 2002-10-30 | 2004-05-21 | Porvair Plc | Inmould process for the spheroidization and inoculation treatment of cast sg iron |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5139520A (en) * | 1974-10-01 | 1976-04-02 | Daihatsu Motor Co Ltd | Dakutairuchutetsuno kokuenkyushokazaiyoyoki |
| JPS5153210U (en) * | 1974-10-22 | 1976-04-23 | ||
| JPS5396918A (en) * | 1977-02-07 | 1978-08-24 | Japan Miihanaito Metaru Yuugen | Core of removing scale |
-
1986
- 1986-04-14 JP JP8663586A patent/JPS62244549A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5139520A (en) * | 1974-10-01 | 1976-04-02 | Daihatsu Motor Co Ltd | Dakutairuchutetsuno kokuenkyushokazaiyoyoki |
| JPS5153210U (en) * | 1974-10-22 | 1976-04-23 | ||
| JPS5396918A (en) * | 1977-02-07 | 1978-08-24 | Japan Miihanaito Metaru Yuugen | Core of removing scale |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4955427A (en) * | 1989-05-15 | 1990-09-11 | Amenex Associates, Inc. | Placement of particulates onto refractory filters for liquid metals |
| EP0410586A2 (en) * | 1989-07-22 | 1991-01-30 | Foseco International Limited | Filters |
| US5033531A (en) * | 1989-07-26 | 1991-07-23 | Foseco International Limited | Casting of molten iron and filters for use therein |
| WO2004042090A1 (en) * | 2002-10-30 | 2004-05-21 | Porvair Plc | Inmould process for the spheroidization and inoculation treatment of cast sg iron |
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