JPS63224837A - Net-like filter structural body - Google Patents
Net-like filter structural bodyInfo
- Publication number
- JPS63224837A JPS63224837A JP5837787A JP5837787A JPS63224837A JP S63224837 A JPS63224837 A JP S63224837A JP 5837787 A JP5837787 A JP 5837787A JP 5837787 A JP5837787 A JP 5837787A JP S63224837 A JPS63224837 A JP S63224837A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- molten metal
- net
- mounting frame
- fitting frame
- 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 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 40
- 239000003365 glass fiber Substances 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 239000011819 refractory material Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 15
- 239000000843 powder Substances 0.000 abstract description 10
- 239000004576 sand Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 6
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 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
- 208000015943 Coeliac disease Diseases 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000002759 woven fabric Substances 0.000 description 4
- 229910001208 Crucible steel Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 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
- 230000000694 effects Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 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
- 239000011449 brick Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010112 shell-mould casting Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 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
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000005303 weighing Methods 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
- B22C9/086—Filters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、鋳鉄や鋳鋼溶湯濾過用フィルターであって、
砂型造型鋳型の鋳型分割面に備えられるものに関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention is a filter for filtering cast iron and molten cast steel,
This invention relates to what is provided on the mold dividing surface of a sand mold making mold.
（従来の技術）
鋳鉄、鋳鋼などの鉄系溶湯中に感温浮遊しているスラグ
等の非金属介在物が溶湯とともに鋳造キャビティに流入
すると、スラグは鋳物表面に浮上凝固し、鋳物の黒皮直
下に凝集して鋳造欠陥となる。(Prior art) When non-metallic inclusions such as slag, which are thermosensitively suspended in ferrous metal such as cast iron or cast steel, flow into the casting cavity together with the molten metal, the slag floats to the surface of the casting and solidifies, causing a black crust on the casting. It aggregates directly below and becomes a casting defect.
そこで、鋳造キャビティにスラグ等が混入するのを防止
するために、湯口や湯道などの溶湯流路に溶湯性適用フ
ィルターが設置されている。Therefore, in order to prevent slag and the like from entering the casting cavity, molten metal filters are installed in molten metal flow paths such as sprues and runners.
従来、溶湯濾適用フィルターとしては、シャ干ソト質耐
火材で形成されたストレーナ・コア（多孔陶器製フィル
ター）、アルミナ質のハニカＪ、タイプストレーナ、炭
化珪素質の発泡タイプストレーナが実用されている。Conventionally, as filters applicable to molten metal filtration, strainer cores (porous ceramic filters) made of a solid refractory material, alumina Hanica J type strainers, and foam type strainers made of silicon carbide have been put into practical use. .
しかし、ストレーナ・コアやハニカムタイプは、濾過効
果が小さく、発泡タイプのものは三次元網目状骨格構造
であるため、目詰まりを起こし易く、溶湯通ｉｆ５抵抗
が大となり、鋳造時間の遅れによる湯回り不良や湯じわ
等の鋳造欠陥が生じ易いという欠点がある。また、ハニ
カムタイプや発泡タイプのものは高価であり、経済性に
劣る。However, strainer core and honeycomb types have a small filtration effect, and foam types have a three-dimensional network skeleton structure, so they are prone to clogging, have a large molten metal flow if5 resistance, and delay casting time. It has the disadvantage that casting defects such as poor rotation and mold wrinkles are likely to occur. In addition, honeycomb type and foam type are expensive and less economical.
一方、網状タイプのカーボン繊維もしくはガラス繊維フ
ィルターが実用化されているが、これらはいずれもアル
ミ溶湯などの低融点金属溶湯用のフィルターとしての機
能しかなく、鉄系溶湯のような１２００〜１７５０℃の
高融点金属溶湯用にはまったく供し得ない現状にある。On the other hand, mesh-type carbon fiber or glass fiber filters have been put into practical use, but these only function as filters for low-melting point metals such as molten aluminum; At present, it cannot be used at all for high-melting-point molten metals.
（発明が解決しようとする問題点）
そこで、本発明者は、特願昭６０−２３５０３２号にお
いて、高融点金属溶湯に対しても使用することができる
ガラス繊維製の網状フィルターを開発した。(Problems to be Solved by the Invention) Therefore, in Japanese Patent Application No. 60-235032, the present inventor developed a mesh filter made of glass fiber that can be used even for high melting point molten metal.
この網状フィルターは、ＳｉＯ□含有量が７５重量％以
上のガラス繊維によって網目状に形成され、かつ焼成に
より予め収縮されたものである。また、フェノールレジ
ン、シリカゾル溶液等が塗布されて保形性が付与される
ことも多い。This mesh filter is formed into a mesh shape using glass fibers having an SiO□ content of 75% by weight or more, and is previously shrunk by firing. In addition, phenol resin, silica sol solution, etc. are often applied to impart shape retention.
網状フィルターは、通常、第５図に示すように、砂型造
型された上型２Ｉから下型２２に移行して形成された湯
口流路２３底部の鋳型分割面２４に配設され、両砂型２
Ｌ２２に挟持されて使用されている。同図において、２
５は網状フィルター、２６は湯口底、２７は湯道流路、
２８は押湯部鋳造空間、２９は製品鋳造空間、３０はフ
ィルター設置用中子である。As shown in FIG. 5, the mesh filter is usually disposed on the mold dividing surface 24 at the bottom of the sprue channel 23 formed by transitioning from the sand molded upper mold 2I to the lower mold 22.
It is used while being held between L22. In the same figure, 2
5 is a mesh filter, 26 is a sprue bottom, 27 is a runner channel,
28 is a feeder casting space, 29 is a product casting space, and 30 is a core for installing a filter.
ところが、網状フィルター２５の重量は通常１０ｇ以下
と軽量のため、鋳型移動時やエアブロ−で鋳造キャビテ
ィを清掃する際に位置ズレが生じて、フィルターとして
の機能を果さない場合がある。However, since the net filter 25 is light, usually weighing less than 10 g, it may become misaligned when moving the mold or when cleaning the casting cavity with air blow, and may not function as a filter.
また、フィルターの固定は上型２１と下型２２による挾
持によって行われるため、大きな押え代を必要とし、有
効使用面積の低下を余儀なくされている。Further, since the filter is fixed by being held between the upper die 21 and the lower die 22, a large pressing area is required, which inevitably reduces the effective usable area.
更にまた、フィルターの挟持に際して、フィルターが砂
型面に押し込まれて、鋳型に型くずれが生じ、鋳砂が溶
湯流路に落ち込み、砂かみなどの鋳造欠陥を招来する場
合があった。Furthermore, when the filter is held, the filter is pushed into the sand mold surface, causing the mold to become deformed, and the casting sand to fall into the molten metal channel, resulting in casting defects such as sand pits.
本発明はかかる問題点に鑑みなされたもので、網状フィ
ルターの溶湯流路への設置に当り、位置ずれが生じ難く
、また押え代も少なくて済み、更に溶湯流路への鋳砂の
落ち込みも防止可能な高融点金属溶湯濾過用フィルター
を提供することを目的とする。The present invention was developed in view of these problems, and when installing the mesh filter in the molten metal flow path, it is difficult to cause misalignment, requires less pressing allowance, and also prevents casting sand from falling into the molten metal flow path. It is an object of the present invention to provide a filter for filtering high melting point metal molten metal that can prevent the above problems.
（問題点を解決するための手段）
上記目的を達成するためになされた本発明のフィルター
は、フィルター取付枠１，１ａに溶湯流過孔３．３ａが
形成されており、ＳｉＯ□含有量が７５重量％以上のガ
ラス繊維によって形成された網状フィルター４．４ａの
周縁部が前記取付枠１，１ａに固着されてその中央部が
前記溶湯流過孔３，３ａ部分に位置されており、前記フ
ィルター取付枠２，２ａは耐火材の焼成体によって形成
されていることを発明の構成とするものである。(Means for Solving the Problems) The filter of the present invention, which has been made to achieve the above object, has molten metal flow holes 3.3a formed in the filter mounting frames 1 and 1a, and has a SiO□ content. A peripheral portion of a mesh filter 4.4a formed of glass fiber of 75% by weight or more is fixed to the mounting frame 1, 1a, and a central portion thereof is located in the molten metal flow hole 3, 3a portion, and the According to the invention, the filter mounting frames 2 and 2a are formed of a fired body of refractory material.
（作 用）
網状フィルターは、その周縁がフィルター取付枠に固着
されてその中央部が前記取付枠に形成された溶湯流過孔
に被着されているので、網状フィルターの溶湯流路への
設置に当っては、前記取付枠ごと設置すればよく、設置
が容易でフィルターの位置ずれが生じない。(Function) The periphery of the mesh filter is fixed to the filter mounting frame, and the center part is attached to the molten metal flow hole formed in the mounting frame, so it is easy to install the mesh filter in the molten metal flow path. In this case, it is sufficient to install the above-mentioned mounting frame together, which makes the installation easy and prevents the filter from shifting.
また、前記取付枠の設置に当っては、該取付枠を鋳型に
よって挟持する必要がなく、溶湯流路に適宜設けられた
四部に収納するだけでよいから、鋳型の型くずれおよび
これに起因した鋳砂の落ち込みを防止することができる
。In addition, when installing the mounting frame, there is no need to hold the mounting frame between the molds, and it is only necessary to store the mounting frame in the four parts appropriately provided in the molten metal flow path. It is possible to prevent sand from falling.
また、フィルター取付枠は耐火材の焼成体によって形成
されているので、熱的に安定であり、溶湯熱によっても
崩壊することがなく、それ故、少ない固着化で網状フィ
ルターをフィルター取付枠に確実に固着することができ
る。In addition, since the filter mounting frame is made of a fired refractory material, it is thermally stable and will not collapse even when exposed to the heat of molten metal.Therefore, the mesh filter can be securely attached to the filter mounting frame with less sticking. can be fixed to.
また、網状フィルターは５ｉＯ７含有量が７５重量％以
上のものを使用しているので、耐熱性に優れ、鉄系高融
点溶湯を濾過することができる。Further, since the mesh filter has a 5iO7 content of 75% by weight or more, it has excellent heat resistance and can filter iron-based high melting point molten metal.
（実施例）
次に図面を参照して、本発明の実施例について説明する
。(Example) Next, an example of the present invention will be described with reference to the drawings.
第１図に示す実施例に係る網状フィルター構造体１は、
溶湯流過孔３が形成されたフィルター取付枠２に網状フ
ィルター４の周縁部が埋入保持されて固着されている。The mesh filter structure 1 according to the embodiment shown in FIG.
A peripheral portion of a mesh filter 4 is embedded and fixed in a filter mounting frame 2 in which a molten metal flow hole 3 is formed.
前記フィルター取付枠２は、網状フィルター４の周縁部
を耐火材粉末に埋入させて、これを加圧成形した後、焼
成したものである。The filter mounting frame 2 is obtained by embedding the peripheral edge of the reticular filter 4 in refractory material powder, press-molding it, and then firing it.
前記耐火材粉末としては、通常の耐火レンガ原料粉末が
使用され、例えばろう石粉末、シャモット粉末、けい石
粉末等を例示することができる。As the refractory material powder, a usual refractory brick raw material powder can be used, and examples thereof include waxite powder, chamotte powder, silica powder, and the like.
前記フィルター取付枠２においては、網状フィルター４
の周縁と該取付枠２の外周側面との間に、耐火材のみか
らなる充実部７が形成されている。In the filter mounting frame 2, a mesh filter 4 is provided.
A solid portion 7 made only of fireproof material is formed between the peripheral edge of the mounting frame 2 and the outer peripheral side surface of the mounting frame 2.
このような充実部７を形成しておくと、フィルター取付
枠１は網状フィルター４の存在によっても分断され難く
なる。特に、成形の際に有効に作用する。尚、充実部７
の幅すなわち網状フィルター４周縁と取付枠２外周側面
との間隔は２１１以上にするのがよい。By forming such a solid portion 7, the filter mounting frame 1 becomes difficult to be separated even by the presence of the mesh filter 4. Particularly effective during molding. In addition, enhancement part 7
The width, that is, the distance between the peripheral edge of the mesh filter 4 and the outer peripheral side surface of the mounting frame 2, is preferably set to 211 mm or more.
溶湯流過孔３に被着された網状フィルター４の中央部は
、第１図のように、たるませた状態にしておくのがよい
。溶湯濾過時に取付枠２は膨張し、網状フィルタ−４中
央部は収縮しようとするからである。たるませる量は、
フィルター中央部に引張り応力が作用しない程度とする
。The center portion of the mesh filter 4 attached to the molten metal flow hole 3 is preferably left slack as shown in FIG. This is because the mounting frame 2 expands during molten metal filtration, and the central portion of the mesh filter 4 tends to contract. The amount of slack is
The tension should be such that no tensile stress is applied to the center of the filter.
フィルター取付枠２に被着されている網状フィルター４
は、Ｓｉ０ｇ含有量が７５重景％以上のガラス繊維で織
製された網状織布がフィルター取付枠１の焼成過程で取
付枠１と共に焼成されたものである。A mesh filter 4 attached to a filter mounting frame 2
A net-like woven fabric made of glass fiber having a Si0g content of 75% or more was fired together with the filter mounting frame 1 during the firing process of the filter mounting frame 1.
ガラス繊維のＳｉＯ□組成を７５重量％以上にする理由
は、本発明者が特願昭６０−２３５０３２号において明
らかにした通り、１４５０℃以下のあらゆる種類の鋳鉄
溶湯に適合可能となるためである。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
可能となる。ここに、適合とは溶湯中に２０秒間浸漬し
ても、ガラス繊維がスラグ化しないことをいう。前記２
０秒間は、通常の注湯時間はほとんどこれ以内で行われ
ることによる。The reason why the SiO□ composition of the glass fiber is set to 75% by weight or more is that, as the inventor of the present invention clarified in Japanese Patent Application No. 60-235032, it is compatible with all kinds of molten cast iron at temperatures below 1450°C. . If 5i02 is of high purity, it can be applied to molten cast steel at 1500°C or higher. Here, compatibility means that the glass fibers do not turn into slag even when immersed in molten metal for 20 seconds. Said 2
The reason for 0 seconds is that most of the normal pouring time is within this time.
ガラス繊維中のＳｉＯ□組成を７５重量％以上にする方
法としては、経済性や加工性に冨んだ低５ｉ０２含有量
のガラス繊維を用いて網状織布を織製した後、該網状織
布に後述する酸処理を施して、ＳｉＯ□含有量を高純度
化すればよい。As a method for increasing the SiO□ composition in the glass fibers to 75% by weight or more, after weaving a reticulated woven fabric using glass fiber with a low 5i02 content that is rich in economy and processability, the reticulated woven fabric The SiO□ content may be highly purified by subjecting it to acid treatment as described below.
前記酸処理は、低５ｉ０２含を量のガラス繊維によって
織製された網状織布を塩酸、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ガラス
繊維中の不純物であるＣａｂ。The acid treatment is performed by immersing a reticulated fabric woven from glass fibers with a low 5i02 content in an acidic solution such as hydrochloric acid, nitric acid, or sulfuric acid to which a catalyst for accelerating the reaction is added. , Cab, which is an impurity in the glass fiber, while controlling the concentration of the acidic solution.
ＭｇＯ，ＦｅｚＯ３，Ｃｒｚ（Ｌ＋＋ Ｎａ２ｏｚ＋
Ｋ２Ｏ１Ｔｉ０ｚ＋ ＢｚＯｚなどの含有率を下げ、そ
の結果として５ｉＯ７の含有量を上げる処理である。MgO, FezO3, Crz(L++ Na2oz+
This process lowers the content of K2O1Ti0z+BzOz, etc., and increases the content of 5iO7 as a result.
網状フィルター４の面積開孔率は、１２．５〜３２．５
％にするのが好ましい。この範囲で鋳込時間の遅れも生
じにくく、またフィルター設置部において鋳物の分断が
容易となるからである。尚、面積開孔率％は、フィルタ
ー表面における網目開孔面積Ｘ１００／フイルター全表
面積で表わされる。また、鋳込時間の遅れとは、フィル
ターを用いた場合に溶湯が鋳造キャビティに充満するま
での鋳造時間とフィルターを用いない場合の鋳造時間と
の差をいい、この値が大きいと湯回り不良や湯じわ等の
鋳造欠陥が生じ易くなる。The area porosity of the mesh filter 4 is 12.5 to 32.5.
% is preferable. This is because within this range, delays in casting time are less likely to occur, and the casting can be easily divided at the filter installation part. Incidentally, the area porosity ratio (%) is expressed as the mesh pore area on the filter surface x100/total surface area of the filter. In addition, casting time delay refers to the difference between the casting time until the molten metal fills the casting cavity when a filter is used and the casting time when a filter is not used. If this value is large, the casting time will be poor. Casting defects such as hot water and hot water wrinkles are more likely to occur.
以上説明した網状フィルター構造体１ば、第２図に例示
した成形型によって圧縮成形された後、５００〜１４０
０ （望ましくは１２００〜１３５０） ”ｃで焼成さ
れる。同図において、網状フィルター素材４０は、円筒
状外型４１の内部に形成されたテーパ状成形室４２に上
下方向摺動自在とされた上マンドレル４３と下マンドレ
ル４４によって挟持されている。４５は耐火材粉末、４
６．４７は上、下加圧プランジャである。After the reticular filter structure 1 described above is compression-molded using the mold illustrated in FIG.
0 (preferably 1200 to 1350)" c. In the figure, a mesh filter material 40 is vertically slidable in a tapered molding chamber 42 formed inside a cylindrical outer mold 41. It is sandwiched between an upper mandrel 43 and a lower mandrel 44. 45 is a refractory material powder;
6.47 are upper and lower pressure plungers.
耐火材粉末４５は、粉体状あるいはスラリー状で網状フ
ィルター素材４０周縁部の回りに充填される。The refractory material powder 45 is filled around the periphery of the mesh filter material 40 in the form of powder or slurry.
網状フィルター素材４０としては、網状織布に保形剤を
塗布したものが作業性もよく好適である。尚、保形剤は
焼成過程で燃焼消失する。As the reticulated filter material 40, a reticulated woven fabric coated with a shape preservation agent is suitable because of its good workability. Note that the shape retaining agent burns and disappears during the firing process.
ところで、フィルター取付枠をペプセソト造型、コール
ドボックス造型、シェル型造型等により造型することも
考えられるが、この場合、砂枠が溶湯熱により崩壊する
虞れがあり、本発明のフィルター取付枠としては適用し
難い。By the way, it is also possible to mold the filter mounting frame by Pepse Soto molding, cold box molding, shell molding, etc., but in this case, there is a risk that the sand frame will collapse due to the heat of the molten metal, so the filter mounting frame of the present invention is not suitable. Difficult to apply.
第３図は、他の実施例に係る網状フィルター構造体１ａ
を示す。本実施例においては、網状フィルター４ａの周
縁部はフィルター取付枠２ａの下面にシリカ・アルミナ
系等の無機質接着剤によって固着されている。FIG. 3 shows a mesh filter structure 1a according to another embodiment.
shows. In this embodiment, the peripheral edge of the mesh filter 4a is fixed to the lower surface of the filter mounting frame 2a with an inorganic adhesive such as silica/alumina adhesive.
フィルター取付枠２ａの溶湯流過孔３ａには、網状フィ
ルタ−４８中央部が被着されるが、該中央部をたるませ
ておくことは先の実施例と同様、破損防止に有効である
。The center portion of the mesh filter 48 is attached to the molten metal flow hole 3a of the filter mounting frame 2a, and leaving the center portion slack is effective in preventing damage, as in the previous embodiment.
本実施例に用いられる網状フィルター４８としては、保
形剤の塗布の有無に関係な（、いずれのものも使用でき
るが、溶湯熱により保形剤の熱焼の虞れのない、保形剤
を有しないものがよい。また、網状フィルター４８の中
央部をたるませて被着しておけば、収縮防止のためにガ
ラス繊維を予め収縮させておく必要もない。As the reticular filter 48 used in this embodiment, any one can be used, regardless of whether or not a shape preservation agent is applied. In addition, if the mesh filter 48 is attached with a slack central portion, there is no need to shrink the glass fibers in advance to prevent shrinkage.
以上説明した本発明の網状フィルター構造体の鋳型設置
要領を第１図に示す。同図において、」二型１１から下
型１２に移行して湯口流路１３が形成されており、下型
１２の鋳型分割面に開口し、かつ湯口流路１３の内周面
に沿って設置用凹部１４が設けられ、該凹部Ｉ４に本発
明に係る網状フィルター構造体１０が収納されている。FIG. 1 shows the procedure for installing a mold for the reticulated filter structure of the present invention as described above. In the figure, a sprue passage 13 is formed by transitioning from the second mold 11 to the lower mold 12, and is opened at the mold dividing surface of the lower mold 12 and installed along the inner circumferential surface of the sprue passage 13. A recess 14 is provided, and the reticular filter structure 10 according to the present invention is accommodated in the recess I4.
１５は湯道流路であり、この先方に製品鋳造空間等が形
成されていることは従来の通りである。Reference numeral 15 denotes a runner flow path, and a product casting space etc. is formed in front of this, as is conventional.
本発明に係る網状フィルター構造体を使用すると、従来
のようにフィルター設置用中子３０を省略することがで
き、かつフィルターを上型および下型に挟持することな
く、極めて容易、確実に溶湯流路に設置することができ
る。By using the mesh filter structure according to the present invention, it is possible to omit the filter installation core 30 as in the conventional case, and the molten metal can flow extremely easily and reliably without having to sandwich the filter between the upper mold and the lower mold. Can be installed on the road.
（発明の効果）
以上説明した通り、本発明の網状フィルター構造体は、
網状フィルターの周縁部を耐火材の焼成体によって形成
されたフィルター取付枠に固着しているので、溶湯熱に
よって前記取付枠は崩壊することがなく、従って、網状
フィルターの周縁部は少ない固着化で確実にフィルター
取付枠に固着することができる。また、溶湯流路へのフ
ィルターの設置に当っても、上型と下型とによって挟持
する必要がなく、容易かつ確実に設置することができ、
しかも鋳型に型くずれが生じない。更に、従来のように
フィルター設置用中子を設けなくてよいから鋳型構造を
簡単にすることができる。(Effects of the Invention) As explained above, the reticular filter structure of the present invention has the following features:
Since the peripheral edge of the mesh filter is fixed to the filter mounting frame formed of a fired body of refractory material, the mounting frame will not collapse due to the heat of the molten metal, and therefore the peripheral edge of the mesh filter will be less likely to stick. Can be securely fixed to the filter mounting frame. In addition, when installing the filter in the molten metal flow path, there is no need to hold it between the upper mold and the lower mold, and it can be installed easily and reliably.
Moreover, the mold does not lose its shape. Furthermore, since there is no need to provide a core for installing a filter as in the prior art, the mold structure can be simplified.
また、網状フィルターはＳｉ０ｇ含有量が７５重景％以
上のガラス繊維によって形成されており、耐熱性に優れ
、鋳鉄等の高温溶湯を濾過することができる。Further, the mesh filter is made of glass fiber with a Si0g content of 75% or more, has excellent heat resistance, and can filter high-temperature molten metal such as cast iron.
第１図は実施例に係る網状フィルター構造体の断面図、
第２図は同構造体の成形型の要部断面説明図、第３図は
他の実施例に係る網状フィルター構造体の断面図、第４
図は網状フィルター構造体の設置要領を示す鋳型の要部
断面説明図、第５図は網状フィルターの設置された鋳型
の断面図である。
２＋２８−−−フィルター取付枠、３，３ａ−溶湯流過
孔、４．４ａ−・網状フィルター。
第５図FIG. 1 is a sectional view of a mesh filter structure according to an example;
FIG. 2 is an explanatory cross-sectional view of a main part of a mold for the same structure, FIG. 3 is a cross-sectional view of a mesh filter structure according to another embodiment, and FIG.
The figure is an explanatory cross-sectional view of a main part of a mold showing how to install a mesh filter structure, and FIG. 5 is a cross-sectional view of the mold in which a mesh filter is installed. 2+28---Filter mounting frame, 3,3a-molten metal flow hole, 4.4a--reticular filter. Figure 5
Claims (4)
が形成されており、ＳｉＯ＿２含有量が７５重量％以上
のガラス繊維によって形成された網状フィルター４、４
ａの周縁部が前記取付枠１、１ａに固着されてその中央
部が前記溶湯流過孔３、３ａ部分に位置されており、前
記フィルター取付枠２、２ａは耐火材の焼成体によって
形成されていることを特徴とする網状フィルター構造体
。(1) Molten metal flow holes 3, 3a in filter mounting frames 1, 1a
Reticulated filters 4, 4 formed of glass fibers with a SiO_2 content of 75% by weight or more
The peripheral part of the filter a is fixed to the mounting frame 1, 1a, and the center part thereof is located in the molten metal flow hole 3, 3a, and the filter mounting frame 2, 2a is formed of a fired body of refractory material. A mesh filter structure characterized by:
に埋入保持されて固着されている特許請求の範囲第１項
記載の網状フィルター構造体。(2) The peripheral edge of the mesh filter 4 is attached to the filter mounting frame 2
A reticular filter structure according to claim 1, wherein the reticulated filter structure is embedded in and fixed to.
外周側面との間に耐火材のみからなる充実部７が前記取
付枠２の外周部に形成されている特許請求の範囲第２項
記載の網状フィルター構造体。(3) A solid portion 7 made of only a fireproof material is formed on the outer periphery of the mounting frame 2 between the periphery of the mesh filter 4 and the outer peripheral side of the filter mounting frame 2. Reticulated filter structure.
おいてたるんだ状態で被着されている特許請求の範囲第
１項ないし第３項のいずれかに記載の網状フィルター構
造体。(4) The mesh filter structure according to any one of claims 1 to 3, wherein the mesh filters 4, 4a are attached in a slack state in the molten metal flow holes 3, 3a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5837787A JPS63224837A (en) | 1987-03-12 | 1987-03-12 | Net-like filter structural body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5837787A JPS63224837A (en) | 1987-03-12 | 1987-03-12 | Net-like filter structural body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63224837A true JPS63224837A (en) | 1988-09-19 |
Family
ID=13082635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5837787A Pending JPS63224837A (en) | 1987-03-12 | 1987-03-12 | Net-like filter structural body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63224837A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01143739A (en) * | 1987-11-27 | 1989-06-06 | Rigunaito Kk | Filter for molten metal filtration |
| US5425410A (en) * | 1994-08-25 | 1995-06-20 | Pyrotek, Inc. | Sand casting mold riser/sprue sleeve |
| FR2929147A1 (en) * | 2008-04-01 | 2009-10-02 | Saint Jean Ind Soc Par Actions | FILTER FOR THE ALUMINUM ALLOY FOUNDRY, MAGNESIUM, COPPER AND THE LIKE. |
| CN102672108A (en) * | 2012-05-21 | 2012-09-19 | 温州瑞明工业股份有限公司 | Molten metal filtering and staticizing device and application method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4714631A (en) * | 1971-01-13 | 1972-08-11 | Bosch Gmbh Robert |
-
1987
- 1987-03-12 JP JP5837787A patent/JPS63224837A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4714631A (en) * | 1971-01-13 | 1972-08-11 | Bosch Gmbh Robert |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01143739A (en) * | 1987-11-27 | 1989-06-06 | Rigunaito Kk | Filter for molten metal filtration |
| US5425410A (en) * | 1994-08-25 | 1995-06-20 | Pyrotek, Inc. | Sand casting mold riser/sprue sleeve |
| FR2929147A1 (en) * | 2008-04-01 | 2009-10-02 | Saint Jean Ind Soc Par Actions | FILTER FOR THE ALUMINUM ALLOY FOUNDRY, MAGNESIUM, COPPER AND THE LIKE. |
| WO2009122048A1 (en) * | 2008-04-01 | 2009-10-08 | Saint Jean Industries | Filter intended for the foundry of parts made from aluminum, magnesium, copper, and similar alloys |
| US8313689B2 (en) | 2008-04-01 | 2012-11-20 | Saint Jean Industries | Filter for use in the casting of aluminium, magnesium, copper alloy and the like |
| CN102672108A (en) * | 2012-05-21 | 2012-09-19 | 温州瑞明工业股份有限公司 | Molten metal filtering and staticizing device and application method thereof |
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