JP2992085B2 - Ceramic filter for molten aluminum filtration - Google Patents
Ceramic filter for molten aluminum filtrationInfo
- Publication number
- JP2992085B2 JP2992085B2 JP2415095A JP41509590A JP2992085B2 JP 2992085 B2 JP2992085 B2 JP 2992085B2 JP 2415095 A JP2415095 A JP 2415095A JP 41509590 A JP41509590 A JP 41509590A JP 2992085 B2 JP2992085 B2 JP 2992085B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- ceramic filter
- molten aluminum
- parts
- binder
- 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 - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Filtering Materials (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はアルミニウムまたはアル
ミニウム合金溶湯中に混入する非金属介在物等を濾過す
るために使用するセラミックフィルターに関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic filter used for filtering nonmetallic inclusions and the like mixed in a molten aluminum or aluminum alloy.
【０００２】[0002]
【従来の技術およびその問題点】一般に、アルミニウム
またはアルミニウム合金溶湯中には非金属介在物等の異
物が混入しており、鋳造時にハードスポット等の加工上
のトラブルの原因となるため、これら異物は鋳造に先立
って除去し、鋳造品の品質を高め、後加工工程トラブル
を回避するようにしている。そのために従来から溶湯の
濾過処理が施されている。この溶湯の濾過に使用される
装置としては種々の形式のものがあるが、特公昭５２−
２２３２７号公報に記載されているように、ＳｉＯ2、
Ｂ2Ｏ3等の無機物質を結合材として用いて焼結したチュ
ーブタイプのフィルターが一般的である。2. Description of the Related Art Generally, foreign matters such as nonmetallic inclusions are mixed in a molten aluminum or aluminum alloy and cause troubles such as hard spots during casting. Is removed prior to casting to improve the quality of the casting and avoid post-processing troubles. For this purpose, a molten metal has conventionally been subjected to a filtration treatment. There are various types of devices used for filtering the molten metal.
As described in Japanese Patent No. 22327, SiO 2 ,
A tube type filter sintered using an inorganic substance such as B 2 O 3 as a binder is generally used.
【０００３】しかしながら、このような従来のフィルタ
ーでは熱間曲げ強度（８００℃）が３０kgf/cm2と低い
ため、高純度アルミニウム等のように溶湯温度が高い溶
湯の濾過には、濾過中にフィルターが損傷する恐れがあ
るため、不適であり、問題とされていた。However, such a conventional filter has a low hot bending strength (800 ° C.) of 30 kgf / cm 2, and therefore, when filtering a molten metal having a high molten metal temperature, such as high-purity aluminum, the filter is required during filtration. Was unsuitable and problematic because it could be damaged.
【０００４】本発明は熱間曲げ強度が高く、溶湯温度の
高い特に高純度アルミニウム溶湯の濾過に極めて好適な
セラミックフィルターを提供することを目的とするもの
である。It is an object of the present invention to provide a ceramic filter which has a high hot bending strength and is very suitable for filtering a high-purity aluminum melt, particularly a high-purity aluminum melt.
【０００５】[0005]
【問題点を解決するための手段】本発明は、電融アルミ
ナ骨材粒子１００重量部に対し、３〜２５重量部の結合
材を配合してなり、該結合材が２〜６重量％のＳｉ
Ｏ2，１〜１０重量％のＭｇＯ，１〜８重量％のＴｉ
Ｏ2，残部Ａｌ2Ｏ3から構成したセラミックフィルター
により、前記問題点を解決したものである。According to the present invention, 3 to 25 parts by weight of a binder is blended with 100 parts by weight of fused alumina aggregate particles, and the binder is contained in an amount of 2 to 6% by weight. Si
O 2 , 1 to 10 wt% MgO, 1 to 8 wt% Ti
This problem has been solved by a ceramic filter composed of O 2 and the balance Al 2 O 3 .
【０００６】[0006]
【作用】本発明ではアルミナ骨材粒子１００重量部に対
して３〜２５重量部の結合材を配合することにより熱間
強度を高めかつ気孔率を適正値に保持し、結合材として
含有させるＳｉＯ2、ＭｇＯ、ＴｉＯ2、Ａｌ2Ｏ3の配合
割合を適正値とすることにより熱間曲げ強度を高めるこ
とができる。なお、結合材の配合比率が骨材粒子に対
し、３重量部未満では強度が保てず、逆に２５重量部を
超えると気孔率が低下して濾過量が不足する。好ましく
は結合材の配合比率を骨材粒子に対し、１０〜２２重量
部とする。According to the present invention, by adding 3 to 25 parts by weight of a binder to 100 parts by weight of alumina aggregate particles, the hot strength is increased, the porosity is maintained at an appropriate value, and SiO 2 is contained as a binder. By setting the mixing ratio of 2 , MgO, TiO 2 and Al 2 O 3 to an appropriate value, the hot bending strength can be increased. If the blending ratio of the binder is less than 3 parts by weight with respect to the aggregate particles, the strength cannot be maintained, and if it exceeds 25 parts by weight, the porosity decreases and the amount of filtration is insufficient. Preferably, the mixing ratio of the binder is 10 to 22 parts by weight based on the aggregate particles.
【０００７】[0007]
【実施例】電融アルミナＷＡ骨材＃２４を８０重量部、
表１に示した組成の結合材２０重量部および穀物粉４重
量部とを混練し、所定形状に成形し、これを乾燥後、１
６００〜１６５０℃で焼成し、フィルター試料とした。
これら試料を常温、および熱間（８００℃）で曲げ強度
を測定した。Example: 80 parts by weight of fused alumina WA aggregate # 24,
20 parts by weight of a binder having the composition shown in Table 1 and 4 parts by weight of cereal flour are kneaded, formed into a predetermined shape, dried, and dried.
It baked at 600-1650 degreeC, and was set as the filter sample.
The bending strength of these samples was measured at room temperature and hot (800 ° C.).
【０００８】曲げ強度は２点支持１点荷重方式で支持ス
パン９０ｍｍで行い、熱間曲げは試料を８００℃、２０
分間保持した雰囲気温度設定用電気炉中で行った。それ
らの結果を表１に併せて記載する。[0008] The bending strength is performed at a supporting span of 90 mm by a two-point supporting one-point load method.
The test was carried out in an electric furnace for setting the ambient temperature held for one minute. The results are also shown in Table 1.
【０００９】[0009]
【表１】 [Table 1]
【００１０】表１において、試料１〜４番より、ＳｉＯ
2が多くなると常温での曲げ強度は向上するものの８０
０℃における熱間曲げ強度が低下することが分かる。ま
た、試料５〜８番より、ＭｇＯが０では熱間強度は低い
が、１０重量％以下の添加で熱間強度を向上させること
が分かる。しかし、１０重量％を超えるＭｇＯの添加は
気孔率を下げ、濾過量不足の可能性があり、実用的では
なくなる。さらに、試料９〜１４番より、ＴｉＯ2は３
〜５重量％で常温、熱間曲げ強度とも極大値を持つこと
が分かる。[0010] In Table 1, from samples No. 1 to No. 4, SiO
When 2 is increased, the bending strength at room temperature is improved, but 80
It can be seen that the hot bending strength at 0 ° C. decreases. From Samples 5 to 8, it can be seen that the hot strength is low when MgO is 0, but the hot strength is improved by adding 10% by weight or less. However, the addition of MgO in excess of 10% by weight lowers the porosity and may result in insufficient filtration, which is not practical. Further, from the sample Nos. 9 to 14, the TiO 2 was 3
It can be seen that at 5% by weight, both the room temperature and the hot bending strength have maximum values.
【００１１】表１の結果より、本発明実施例組成のフィ
ルターでは、特に熱間曲げ強度がいずれも１００ｋｇｆ
／ｃｍ2以上の値を示すことが分かる。From the results in Table 1, it can be seen that the filters having the composition of the present invention have a hot bending strength of 100 kgf.
/ Cm 2 or more.
【００１２】[0012]
【発明の効果】以上のような本発明によれば、８００℃
熱間曲げ強度が１００ｋｇｆ／ｃｍ2以上と極めて大き
く、従って高純度アルミニウム溶湯等の濾過に使用して
もフィルターの損傷の可能性がより少なくなり、耐久性
および安全性に優れたセラミックフィルターが得られ
る。According to the present invention as described above, 800 ° C.
The hot bending strength is extremely high, 100 kgf / cm 2 or more, so that even when used for filtering high-purity molten aluminum, the possibility of damage to the filter is reduced, and a ceramic filter having excellent durability and safety is obtained. Can be
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−69776（ＪＰ，Ａ) 特開 昭58−181833（ＪＰ，Ａ) 特開 昭64−21018（ＪＰ，Ａ) 特公 昭52−22327（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) C22B 9/02 B01D 39/20 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-69776 (JP, A) JP-A-58-181833 (JP, A) JP-A-64-21018 (JP, A) 22327 (JP, B2) (58) Field surveyed (Int. Cl. 6 , DB name) C22B 9/02 B01D 39/20
Claims (1)
ックフィルターにおいて、電融アルミナ骨材粒子１００
重量部に対し、３〜２５重量部の結合材を配合してな
り、該結合材が２〜６重量％のＳｉＯ2，１〜１０重量
％のＭｇＯ，１〜８重量％のＴｉＯ2，残部Ａｌ2Ｏ3か
らなることを特徴とする溶融アルミニウム濾過用セラミ
ックフィルター。1. A ceramic filter used for filtering molten aluminum, comprising:
The weight part, made by blending binder 3-25 parts by weight, the binder 2 to 6% by weight of SiO 2, 1 to 10 wt% of MgO, 1 to 8 wt% of TiO 2, balance A ceramic filter for filtering molten aluminum, comprising Al 2 O 3 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2415095A JP2992085B2 (en) | 1990-12-27 | 1990-12-27 | Ceramic filter for molten aluminum filtration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2415095A JP2992085B2 (en) | 1990-12-27 | 1990-12-27 | Ceramic filter for molten aluminum filtration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04231425A JPH04231425A (en) | 1992-08-20 |
| JP2992085B2 true JP2992085B2 (en) | 1999-12-20 |
Family
ID=18523501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2415095A Expired - Fee Related JP2992085B2 (en) | 1990-12-27 | 1990-12-27 | Ceramic filter for molten aluminum filtration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2992085B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3129675B2 (en) * | 1997-04-16 | 2001-01-31 | 三井金属鉱業株式会社 | Ceramic filter and method of manufacturing the same |
| JP4410714B2 (en) | 2004-08-13 | 2010-02-03 | 富士フイルム株式会社 | Method for producing support for lithographic printing plate |
| ATE395195T1 (en) | 2005-04-13 | 2008-05-15 | Fujifilm Corp | METHOD FOR PRODUCING A PLATE PRINTING PLATE SUPPORT |
| JP2009208140A (en) | 2008-03-06 | 2009-09-17 | Fujifilm Corp | Manufacturing method of aluminum alloy sheet for planographic printing plate, aluminum alloy sheet for planographic printing plate and support for planographic printing plate manufactured by the method |
| US8968530B2 (en) | 2008-09-30 | 2015-03-03 | Fujifilm Corporation | Electrolytic treatment method and electrolytic treatment device |
| JP2011205051A (en) | 2009-06-26 | 2011-10-13 | Fujifilm Corp | Light-reflecting substrate and process for manufacture thereof |
| US8883401B2 (en) | 2009-09-24 | 2014-11-11 | Fujifilm Corporation | Lithographic printing original plate |
| KR20120109573A (en) | 2009-12-25 | 2012-10-08 | 후지필름 가부시키가이샤 | Insulated substrate, process for production of insulated substrate, process for formation of wiring line, wiring substrate, and light-emitting element |
| EP2434592A3 (en) | 2010-09-24 | 2014-09-24 | Fujifilm Corporation | Anisotropically conductive member |
-
1990
- 1990-12-27 JP JP2415095A patent/JP2992085B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04231425A (en) | 1992-08-20 |
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Legal Events
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|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081015 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
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| LAPS | Cancellation because of no payment of annual fees |