JPH07114901B2 - Molten metal ▲ ro ▼ overuse filter - Google Patents
Molten metal ▲ ro ▼ overuse filterInfo
- Publication number
- JPH07114901B2 JPH07114901B2 JP62040178A JP4017887A JPH07114901B2 JP H07114901 B2 JPH07114901 B2 JP H07114901B2 JP 62040178 A JP62040178 A JP 62040178A JP 4017887 A JP4017887 A JP 4017887A JP H07114901 B2 JPH07114901 B2 JP H07114901B2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- filter
- synthetic resin
- coating film
- carbon coating
- 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
- 239000002184 metal Substances 0.000 title claims description 37
- 229910052751 metal Inorganic materials 0.000 title claims description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 29
- 239000000835 fiber Substances 0.000 claims description 29
- 229910052799 carbon Inorganic materials 0.000 claims description 28
- 239000011248 coating agent Substances 0.000 claims description 27
- 238000000576 coating method Methods 0.000 claims description 27
- 229920003002 synthetic resin Polymers 0.000 claims description 24
- 239000000057 synthetic resin Substances 0.000 claims description 24
- 239000004744 fabric Substances 0.000 claims description 18
- 239000012784 inorganic fiber Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 description 16
- 239000002759 woven fabric Substances 0.000 description 15
- 239000005368 silicate glass Substances 0.000 description 12
- 239000005011 phenolic resin Substances 0.000 description 7
- 208000015943 Coeliac disease Diseases 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
- B22D43/004—Retaining slag during pouring molten metal by using filtering means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filtering Materials (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、炭素鋼、合金鋼、各種非鉄合金、特殊合金な
どの鋳物を鋳造するなどの際に使用される溶湯過用フ
イルタに関する。Description: TECHNICAL FIELD The present invention relates to a molten metal over-use filter used for casting castings such as carbon steel, alloy steel, various non-ferrous alloys, and special alloys.
（従来の技術） 従来、上記金属溶湯を鋳造するに当り、その中に含まれ
る金属酸化物（スラグ）などの不純物を除去するため
に、鋳型の湯道に介在設置する溶湯過フィルタとし
て、内部連通空間を有する三次元網状のセル構造から成
るセラミック多孔成形体は公知である。(Prior Art) Conventionally, when casting the above-mentioned molten metal, as a molten metal over-filter installed in a runner of a mold to remove impurities such as metal oxides (slag) contained therein, A ceramic porous molded body having a three-dimensional reticulated cell structure having a communication space is known.
（発明が解決しようとする問題点） 従来の前記のセラミック多孔成形体から成る溶湯過用
フィルタは、製造に時間と手間がかかり、製造コストの
増大をもたらすばかりでなく、特定の鋳型の湯口等の口
径に合うように特定の寸法と形状に製造する必要があ
る。即ち、夫々の湯口の寸法に合わせてその都度製造す
る不経済を免れない。又、溶湯過時の流れがおそくな
ったり、不溶性ガスを巻き込む傾向がある。(Problems to be Solved by the Invention) The conventional molten metal overfill filter made of the above-mentioned ceramic porous molded body not only takes time and labor to manufacture, but not only causes an increase in manufacturing cost, but also a spout of a specific mold or the like. Must be manufactured to a specific size and shape to fit the caliber of. In other words, it is inevitable that the manufacturing cost will be uneconomically adjusted according to the size of each gate. Moreover, the flow of molten metal tends to be slow and insoluble gas tends to be involved.
かかる不都合を解消するべく、溶湯の高温に耐える無機
繊維例えばアルミナ繊維や高珪酸ガラス繊維などを材料
としこれを織り又は編むことにより網目状布に形成した
ものを溶湯過フィルタとして使用してみた。これによ
れば、その鋳型の湯道の寸法に合せて栽断し、湯道を又
いで載置し、鋳型の上下割り型間に簡単に挟み込んで使
用でき、製造が簡単で安価に得られる利点をもたらす
が、さらに検討した結果、上記の金属酸化物繊維は、溶
湯に対する濡れ性が比較的悪く、溶湯の表面張力が比較
的大きいため、材を通過する際の湯流れが比較的悪
く、注湯に比較的時間がかゝることが判った。又、該金
属酸化物から成る繊維糸は、吸湿性であるため、溶湯を
通す際、含有する水分が水蒸気となり湯中に浸入し、且
つこれが熱分解して水素ガスを発生し、鋳造品に混入す
るなどの不都合を生ずることが判った。これを防止する
ため、該網目状布の交叉する繊維糸に布重量に対し40％
以上の付着量で合成樹脂を塗布加熱硬化させて、合成樹
脂の厚い硬化膜で被覆したものを作成し、これを使用し
てみたが、溶湯の過作業の最初から最後まで、該溶湯
の高熱で合成樹脂が分解しつゞけ、比較的多量の分解ガ
ス、分解異物が鋳造する溶湯に混入し、不純物の多く含
有する鋳物をもたらす。一方、該布の繊維糸が露出した
後は、前記のように、注湯作業に時間がかかり、又繊維
糸中の水分が溶湯内に放出され、水蒸気となり且つ熱分
解して水素ガスが鋳物中に混入する欠点を生ずるに至
る。In order to eliminate such inconvenience, an inorganic fiber that withstands the high temperature of the molten metal, such as an alumina fiber or a high silicate glass fiber, is used as a material, and this is woven or knitted to form a mesh cloth. According to this, the mold is cut according to the size of the runner, placed over the runner, and can be easily sandwiched between the upper and lower mold halves of the mold for use, and the manufacturing is simple and inexpensive to obtain. As a result of further study, the metal oxide fibers described above have relatively poor wettability with respect to the molten metal, and the surface tension of the molten metal is relatively large, so that the flow of molten metal when passing through the material is relatively poor, It turns out that pouring takes a relatively long time. Further, since the fiber yarn made of the metal oxide is hygroscopic, when passing through the molten metal, the moisture contained therein becomes water vapor and penetrates into the molten metal, and this is thermally decomposed to generate hydrogen gas, resulting in a cast product. It was found that inconvenience such as mixing occurs. In order to prevent this, 40% of the cloth weight is added to the crossed fiber threads of the mesh cloth.
I applied synthetic resin with the above adhesion amount and cured it by heating to make a synthetic resin coated with a thick cured film, and tried to use it, but from the beginning to the end of the overwork of the molten metal, As a result, the synthetic resin decomposes, and a relatively large amount of decomposed gas and decomposed foreign substances are mixed in the molten metal to be cast, resulting in a casting containing a large amount of impurities. On the other hand, after the fiber threads of the cloth are exposed, as described above, the pouring work takes time, and the water content in the fiber threads is released into the molten metal to become steam and thermally decompose to produce hydrogen gas in the casting. This leads to the drawback of being mixed in.
（問題点を解決するための手段） 本発明は、上記の網目状布型の溶湯過用フィルタの問
題点を改善した溶湯過フィルタを提供するもので、耐
熱性無機繊維を材料として作成した網目状布において、
該網目状布を構成する交叉繊維糸の表面にカーボン被覆
膜を１体に形成し、更に、該カーボン被覆膜に肉薄の合
成樹脂製硬化膜を１体形成して成る。(Means for Solving the Problems) The present invention provides a molten-metal overfilter in which the above-mentioned problems of the mesh cloth-type molten-metal overuse filter are improved, and the mesh formed by using a heat-resistant inorganic fiber as a material. In the cloth
A single carbon coating film is formed on the surface of the crossed fiber yarns constituting the mesh cloth, and a thin synthetic resin cured film is further formed on the carbon coating film.
（実施例） 次に本発明の実施例を説明する。(Example) Next, the Example of this invention is described.
原料無機繊維は、高珪酸ガラス繊維、アルミナ繊維ジル
コニア繊維など、鋳造における高温の例えば1000〜1500
℃の溶湯に対し耐熱性の無機繊維が好ましく、代表的に
は、高珪酸ガラス繊維、就中、シリカ成分96％以上の高
珪酸ガラス繊維を原料とし、この繊維糸を織り又は編む
ことにより網目状布を形成する。一般に、網目状織布と
し、その織り型や糸密度などは任意であり、例えば密度
は、縦糸（撚糸）８本×2/25mm横糸８本×1/25mmとし、
布の厚さは、0.4mmとする。厚さは、一般に0.4〜2mmと
する。本発明によれば、かゝる高珪酸ガラス繊維から成
る網目状織布にカーボン被覆膜を１体に形成する。その
１体形成は、例えば次のようにして得られる。即ち、該
織布に合成樹脂液を浸漬、スプレーなどにより塗着処理
後加熱乾燥して例えば織布重量当り25重量％の合成樹脂
を付着させた。一般に付着量は５〜50％の範囲とする。
合成樹脂は、好ましくは、フェノール樹脂などの熱硬化
性合成樹脂を使用し、この場合は、その乾燥後の織布の
繊維糸に付着した合成樹脂被覆膜は、加熱により硬化膜
となる。次いで、合成樹脂被覆の織布を加熱炉に入れ、
窒素ガスなどの不活性ガスの雰囲気化で高温に加熱し、
該合成樹脂を燒成、炭化せしめる。然るときは、織布の
交叉する繊維糸の表面に付着した厚さ0.013mmのカーボ
ン被覆膜が得られる。カーボン被覆膜の厚さは、一般に
0.002mm〜0.040mm程度とするが、これに限定されないこ
とは勿論である。The raw material inorganic fibers are high silicate glass fibers, alumina fibers, zirconia fibers, etc.
Inorganic fibers that are heat resistant to the molten metal at ℃ are preferred. Typically, high silicate glass fibers, especially high silicate glass fibers with a silica content of 96% or more are used as a raw material, and a mesh is formed by weaving or knitting these fiber threads. Forming a strip. Generally, a mesh woven fabric is used, and its weave pattern and thread density are arbitrary. For example, the density is 8 warp (twisted yarn) x 2 / 25mm weft 8 x 1 / 25mm,
The cloth thickness is 0.4 mm. The thickness is generally 0.4 to 2 mm. According to the present invention, a carbon coating film is integrally formed on a mesh woven fabric made of such high silicate glass fiber. The one-body formation is obtained as follows, for example. That is, a synthetic resin solution was dipped in the woven fabric, applied by spraying, and then dried by heating to deposit, for example, 25% by weight of the synthetic resin on the basis of the weight of the woven fabric. Generally, the adhesion amount is in the range of 5 to 50%.
The synthetic resin is preferably a thermosetting synthetic resin such as phenol resin. In this case, the synthetic resin coating film attached to the fiber threads of the woven fabric after drying becomes a cured film by heating. Then, put the synthetic resin-coated woven fabric in a heating furnace,
Heated to a high temperature in an atmosphere of inert gas such as nitrogen gas,
The synthetic resin is fired and carbonized. In that case, a 0.013 mm-thick carbon coating film attached to the surface of the intersecting fiber threads of the woven fabric is obtained. The carbon coating thickness is generally
The thickness is about 0.002 mm to 0.040 mm, but it is not limited to this.
尚、前記の合成樹脂単独に代え、これにカーボン粉末を
所望量添加した塗布液を塗着するようにしてもよい。Instead of the above-mentioned synthetic resin alone, a coating liquid in which a desired amount of carbon powder is added may be applied.
そして、上記の如くして１体形成したカーボン被覆膜の
上に、樹脂液を塗着して硬化し、肉薄の合成樹脂製硬化
膜を１体形成する。Then, a resin liquid is applied and cured on the carbon coating film formed as a single body as described above to form a thin synthetic resin cured film.
本発明のカーボン被覆の網目状織布の目孔の大きさ、打
込み密度、繊維糸の太さ、強度、交叉糸の本数、束状又
は撚り糸の選択、開口率目孔の大きさなど自由に選択
し、組合せて各種のフィルタとすることができる。The mesh size of the carbon-coated mesh woven fabric of the present invention, the driving density, the thickness of the fiber yarn, the strength, the number of crossing yarns, the selection of bundled or twisted yarn, the aperture ratio, etc. Various filters can be selected and combined to form various filters.
第１図及び第２図は、本発明の実施の１例の溶湯過用
フィルタ（１）を示し、湯口径50mmに適用する縦、横90
mmの正方形から成り、SiO2成分96％以上の高珪酸ガラス
繊維（1a）の複数本の撚糸を縦横に織り、その交叉糸
（1a）（1a）との間に多数の目孔（２）を有する高珪酸
ガラス繊維織布の交叉糸（1a）（1a）の夫々に、カーボ
ン被覆膜（３）を１体に形成し、更に、その上に肉薄の
合成樹脂硬化膜（４）を一体に形成したものである。FIG. 1 and FIG. 2 show a molten metal over-filtration filter (1) according to one embodiment of the present invention, which is applied to a spout diameter of 50 mm.
mm squares, weaving multiple twisted yarns of high silicate glass fiber (1a) with a SiO 2 component of 96% or more in the longitudinal and lateral directions, and a large number of perforations (2) between the intersecting yarns (1a) (1a) A carbon coating film (3) is formed on each of the crossing yarns (1a) (1a) of the high silicate glass fiber woven fabric, and a thin synthetic resin cured film (4) is further formed thereon. It is formed integrally.
第３図及び第４図は、上記本発明の溶湯過用フィルタ
を１例の鋳型の湯道に介在設置したセッチ状態を示す。FIG. 3 and FIG. 4 show a set state in which the above-mentioned molten metal overfilling filter of the present invention is installed in a runner of a mold as an example.
図面で（８）は上下の鋳型、（５）は注湯口、（６）は
押湯口、（７）は鋳型空間部を示し、該注湯口（５）と
該押湯口（６）には、上下の鋳型（８）を閉じる前に本
発明のフィルタ（１）を湯口（５）、（６）を横断し、
その湯口（５）、（６）外周面に貼着設置し、この状態
で上下の鋳型（８）（８）を閉じる。この状態で、高温
の金属溶湯、例えば1450℃の鋳鉄の溶湯を湯口（５）よ
り注入し鋳型空間（７）を充たし、冷却後、鋳型を解体
して第５図示の鋳物（11）が得られた。該鋳物（11）に
は、注湯側と押湯側に余分な溶湯凝固部（９）（10）が
付随しているが、その下面に本発明のフィルタ（１）が
介入しているので、該余分な凝固部（９）（10）をハン
マーで叩けば、該フィルタ（１）を境として容易に分離
でき、所定の鋳物製品が正確に得られる。In the drawing, (8) is the upper and lower molds, (5) is the pouring spout, (6) is the spout, and (7) is the mold space. The pouring spout (5) and the spout (6) are Before closing the upper and lower molds (8), traverse the filter (1) of the present invention across the sprues (5), (6),
The sprues (5) and (6) are attached to the outer peripheral surfaces thereof, and the upper and lower molds (8) and (8) are closed in this state. In this state, a high-temperature metal melt, for example, a cast iron melt at 1450 ° C. is injected from the spout (5) to fill the mold space (7), and after cooling, the mold is disassembled to obtain a cast product (11) shown in FIG. Was given. The casting (11) is provided with extra molten metal solidification portions (9) and (10) on the pouring side and the feeder side, but since the filter (1) of the present invention intervenes on the lower surface thereof. If the extra solidified portions (9) and (10) are hit with a hammer, they can be easily separated with the filter (1) as a boundary, and a predetermined casting product can be obtained accurately.
上記の鋳造作業において、本発明のカーボン被覆膜を備
えた網目状布フィルタを使用すると、後記する如く注湯
初期段階で合成樹脂製硬化膜が熱分解し、その後溶湯
は、溶湯に対する濡れ性の良いカーボン被覆膜と接触す
るので、その過速度は、カーボン被覆のない高珪酸ガ
ラス繊維から成る網状織布自体をフィルタとする場合に
比し、著しく迅速となり円滑迅速な鋳造をもたらす。そ
の上、高珪酸ガラス繊維織布中に含有する湿気は、カー
ボン被覆膜で高珪酸ガラス繊維織布は被覆されているの
で、溶湯中に放出し、水蒸気となり或はその加熱分解に
より生成する水素ガスが溶湯中に含有することなく良好
な品質の鋳物をもたらす。In the above casting operation, when the mesh cloth filter provided with the carbon coating film of the present invention is used, the cured film made of synthetic resin is thermally decomposed in the initial stage of pouring as described later, and then the molten metal is wettable by the molten metal. Since it comes into contact with a good carbon coating film, its overspeed is significantly quicker than that in the case where the reticulated woven cloth itself made of high silicate glass fiber without carbon coating is used as a filter, resulting in smooth and quick casting. In addition, the moisture contained in the high silicate glass fiber woven fabric is released into the molten metal as the high silicate glass fiber woven fabric is covered with the carbon coating film, becomes steam, or is generated by thermal decomposition thereof. It provides good quality castings without the inclusion of hydrogen gas in the melt.
ところで、カーボン被覆膜（３）を形成しただけでは、
溶湯過用フィルタは、柔軟性であるため、鋳型の湯道
の湯口端に跨がらし所定位置にセットすることが比較的
手間がかゝる。又、その表面は、カーボン膜（３）が露
出しているため、取扱いにおいて損傷する危険性があ
る。By the way, if only the carbon coating film (3) is formed,
Since the molten metal overuse filter is flexible, it takes a relatively long time to straddle the sprue end of the mold and set it at a predetermined position. Further, since the carbon film (3) is exposed on the surface, there is a risk of damage during handling.
そこで、本発明では、第２図に明示するように、カーボ
ン被覆膜（３）の表面を極めて肉薄の合成樹脂硬化膜
（４）で１体に被覆した。Therefore, in the present invention, as clearly shown in FIG. 2, the surface of the carbon coating film (3) is integrally covered with a very thin synthetic resin cured film (4).
該合成樹脂硬化膜（４）の付着量は、織布重量に対し20
％程度までにとゞめることが好ましい。該合成樹脂硬化
膜（４）の１体形成は、例えば次のように行なう。The amount of the synthetic resin cured film (4) attached was 20 with respect to the weight of the woven fabric.
It is preferable to limit the amount to about%. The synthetic resin cured film (4) is formed as one body, for example, as follows.
即ち、カーボン被覆膜（３）で被覆した網目状織布に、
フェノール樹脂などの熱硬化性樹脂液を、浸漬、スプレ
ーなどにより、塗着し、加熱乾燥後、硬化温度まで加熱
することにより得られる。このようにして形成された溶
湯過用フィルタ（１）は、剛性が有るため、鋳型の湯
口の端面に横設することが極めて容易となり、又カーボ
ン被覆膜（３）面を保護するに役立つ。その付着量は、
上記のように極めて小量にとゞめるので、溶湯の注湯作
業の初めての段階で、その溶湯による加熱分解は終了
し、フィルター（１）の過面は、その後は、カーボン
被覆膜（３）が露出するので、極めて肉厚に多量の織布
に合成樹脂硬化膜を付着形成せしめたもののように、鋳
物に多量の分解生成物が混入する不都合が殆どなく、製
品として差支えない鋳物をもたらし安全である。本発明
の溶湯過用フィルタは、長尺の帯状シート状に製造
し、ロール状に巻き、或は適当の大きさに切断して平坦
な積層シートとして製品とし、使用に当り、鋳型の湯口
の大きさに応じて小さく所望形状に栽断して使用するこ
とが好ましく一般であるが、予め、湯口に合せた適当の
寸法に小さく栽断した製品としてもよいことは云うまで
もない。That is, in the mesh woven cloth coated with the carbon coating film (3),
A thermosetting resin liquid such as a phenol resin is applied by dipping, spraying or the like, dried by heating, and then heated to a curing temperature. Since the molten metal over-use filter (1) formed in this way has rigidity, it is extremely easy to install it laterally on the end face of the sprue of the mold, and it also serves to protect the carbon coating film (3) face. . The attached amount is
Since the amount is extremely small as described above, the thermal decomposition by the molten metal is completed at the first stage of the molten metal pouring work, and the superficial surface of the filter (1) is then covered with the carbon coating film. Since (3) is exposed, there is almost no inconvenience that a large amount of decomposition products are mixed in the casting, such as a case in which a synthetic resin cured film is adhered and formed on a large amount of woven cloth having an extremely large thickness, and a casting that can be used as a product. Is safe to bring. The molten metal overuse filter of the present invention is manufactured in the form of a long strip-shaped sheet, rolled into a roll, or cut into an appropriate size to obtain a flat laminated sheet, which is used as It is generally preferable to cut and cut into a desired shape according to the size, but it is needless to say that the product may be cut into small pieces in advance to a suitable size according to the sprue.
更に本発明実施の１例を詳述する。Further, one example of the embodiment of the present invention will be described in detail.
実施例１ SiO2成分を96％以上含有する高珪酸ガラス繊維を材料と
し、その繊維糸で織り糸密度は縦８本×2/25mm、横８本
×1/25mm、厚さ0.4mmの網目状織布を製作した。この織
布に、フェノール樹脂液を含浸し、乾燥後120℃で30分
加熱して樹脂を硬化させて、織布の重量に対し25％のフ
ェノール樹脂を付着させた。Example 1 A high silicate glass fiber containing 96% or more of SiO 2 material was used as a material, and the weaving yarn density of the fiber yarn was 8 × 2/25 mm in length, 8 × 1/25 mm in width, and 0.4 mm in thickness in mesh form. I made a woven cloth. This woven fabric was impregnated with a phenol resin solution, dried and then heated at 120 ° C. for 30 minutes to cure the resin, and 25% of the weight of the woven fabric was adhered with the phenol resin.
次いでこれを電気炉内に導入し、窒素ガスの雰囲気下で
400℃、30分加熱してフェノール樹脂を炭化させ、その
カーボン被覆膜を織布の交叉する繊維糸の表面に付着形
成した。炭素の付着量は、織布の重量に対し20％程度で
あった。又そのカーボン被覆膜の厚さは、0.037mmであ
った。更に、このようにして得られたカーボン被覆した
織布から成るフィルタに、スプレー或は浸漬により、フ
ェノール樹脂を塗着し乾燥しその後120℃、30分間加熱
し硬化させた。かくして、織布の重量に対し８％のフェ
ノール樹脂の硬化被膜がカーボン被覆膜に１体に付着し
た本発明の溶湯過フィルタを得た。Then, this was introduced into an electric furnace, and under an atmosphere of nitrogen gas.
The phenol resin was carbonized by heating at 400 ° C. for 30 minutes, and the carbon coating film was adhered and formed on the surface of the intersecting fiber threads of the woven cloth. The amount of carbon deposited was about 20% of the weight of the woven fabric. The carbon coating film had a thickness of 0.037 mm. Further, the carbon filter-coated woven cloth thus obtained was coated with a phenol resin by spraying or dipping, dried, and then heated at 120 ° C. for 30 minutes to be cured. Thus, a molten metal overfilter of the present invention was obtained in which a cured coating film of 8% phenol resin with respect to the weight of the woven cloth was attached to the carbon coating film as one body.
（発明の効果） 本発明の溶湯過用フィルタは、高珪酸ガラスなどの耐
熱性無機繊維を材料とした網目状布に、その交叉する繊
維糸にカーボン被覆膜を１体形成して成るので、溶湯の
過時の過速度が早くなり、又過した溶湯内に繊維
糸中に含まれる湿気が加熱し水蒸気となり或は加熱分解
して水素ガスとなって溶湯に混入することがなく、円滑
迅速に良質の鋳物が製造できる効果を有する。更に、カ
ーボン被覆膜の表面に肉薄の合成樹脂硬化層を１体形成
することにより、フィルタの剛性を確保でき、鋳型の湯
口端面への載置を極めて容易になし得られ、又カーボン
被覆膜を外界から保護し得られ、強靱で且つ運搬等の取
扱いに対し容易且つ安定堅牢であり、溶湯過の際、合
成樹脂の分解は過時の当初にとゞまり、良好な良質の
鋳物をもたらす等の効果を有する。(Effects of the Invention) Since the molten metal overuse filter of the present invention is formed by forming one carbon coating film on the crossed fiber threads on a mesh cloth made of a heat-resistant inorganic fiber such as high silicate glass. , The overspeed of the molten metal becomes faster, and the moisture contained in the molten metal that has passed is heated to become steam or thermally decompose to become hydrogen gas, which does not mix into the molten metal In addition, it has the effect of producing good quality castings. Furthermore, by forming a thin synthetic resin cured layer on the surface of the carbon coating film, the rigidity of the filter can be secured, and the placement on the end face of the casting mold can be achieved very easily. It can protect the membrane from the outside world, is tough, easy and stable for handling such as transportation, and when the molten metal passes, the decomposition of the synthetic resin is as early as the beginning of the time, resulting in good casting quality. And so on.
第１図は、本発明実施の溶湯過用フィルタの１例の上
面図、第２図は、その１部の截断側面図、第３図は本発
明フィルタをセットした状態の鋳型の断面図、第４図は
その湯口部の平面図、第５図は鋳物の斜面図である。 （１）……フィルタ （1a）……繊維糸 （２）……目孔 （３）……カーボン被覆膜 （４）……肉薄合成樹脂硬化膜FIG. 1 is a top view of an example of a melt-passing filter according to the present invention, FIG. 2 is a cutaway side view of a part thereof, and FIG. 3 is a cross-sectional view of a mold in which the filter of the present invention is set, FIG. 4 is a plan view of the sprue part, and FIG. 5 is a perspective view of a casting. (1) ...... Filter (1a) ...... Fiber thread (2) ...... Hole (3) ...... Carbon coating film (4) ...... Thin synthetic resin cured film
Claims (2)
状布において、該網目状布を構成する交叉繊維糸の表面
にカーボン被覆膜を１体に形成し、更に、該カーボン被
覆膜に肉薄の合成樹脂製硬化膜を１体形成して成る溶湯
過用フィルタ。1. A mesh cloth made of a heat-resistant inorganic fiber as a material, wherein a carbon coating film is integrally formed on the surface of crossed fiber yarns constituting the mesh cloth, and the carbon coating film is further formed. A molten metal overuse filter that is formed by forming a thin synthetic resin cured film on the inside.
性樹脂から成る特許請求の範囲第１項に記載のフィル
タ。2. The filter according to claim 1, wherein the cured film made of synthetic resin is made of a resin which is curable at room temperature or heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62040178A JPH07114901B2 (en) | 1987-02-25 | 1987-02-25 | Molten metal ▲ ro ▼ overuse filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62040178A JPH07114901B2 (en) | 1987-02-25 | 1987-02-25 | Molten metal ▲ ro ▼ overuse filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63209719A JPS63209719A (en) | 1988-08-31 |
| JPH07114901B2 true JPH07114901B2 (en) | 1995-12-13 |
Family
ID=12573523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62040178A Expired - Lifetime JPH07114901B2 (en) | 1987-02-25 | 1987-02-25 | Molten metal ▲ ro ▼ overuse filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07114901B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9811840D0 (en) * | 1998-06-02 | 1998-07-29 | Mat & Separations Tech Int Ltd | Carbon structure |
| EP1369158A1 (en) * | 2002-05-31 | 2003-12-10 | Carbon Application Technology Ltd. | Fiber reinforced filter for molten metal filtration and method for producing such filters |
| KR101334255B1 (en) * | 2011-07-18 | 2013-11-28 | 동양하이테크산업주식회사 | Method of producting matal filter for water treatment having stacking-compression process and carbon coating process |
| JP5892596B2 (en) * | 2012-02-21 | 2016-03-23 | タチバナペーパーウェアー株式会社 | Contaminant removal equipment using firewood |
| CN104623977B (en) * | 2015-02-04 | 2016-04-06 | 辽宁鸿盛环境技术集团有限公司 | The woven coated filter material of coal-burning boiler high silica fiber and preparation method |
| CN106390599B (en) * | 2016-09-23 | 2018-11-06 | 河北工业大学 | A kind of preparation method of environment-friendly type Filter-Screen for Molten Iron |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54121907U (en) * | 1978-02-15 | 1979-08-25 | ||
| JPS5920368B2 (en) * | 1981-02-03 | 1984-05-12 | 大竹碍子株式会社 | Manufacturing method of “filtration” body for metal casting |
-
1987
- 1987-02-25 JP JP62040178A patent/JPH07114901B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63209719A (en) | 1988-08-31 |
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