JP3232680B2 - Manufacturing method of honeycomb filter - Google Patents
Manufacturing method of honeycomb filterInfo
- Publication number
- JP3232680B2 JP3232680B2 JP23288692A JP23288692A JP3232680B2 JP 3232680 B2 JP3232680 B2 JP 3232680B2 JP 23288692 A JP23288692 A JP 23288692A JP 23288692 A JP23288692 A JP 23288692A JP 3232680 B2 JP3232680 B2 JP 3232680B2
- Authority
- JP
- Japan
- Prior art keywords
- passage
- ceramic
- closing
- thermosetting resin
- resin powder
- 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
Landscapes
- Processes For Solid Components From Exhaust (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は，例えば内燃機関から排
出されるカーボン微粒子等のパティキュレートを捕集す
るために用いる，セラミック製のハニカムフィルターの
製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a ceramic honeycomb filter used for collecting particulates such as carbon fine particles discharged from an internal combustion engine.
【０００２】[0002]
【従来技術】従来，上記パティキュレートを捕集するた
めのハニカムフィルターとしては，図６に示すごときセ
ラミック製のハニカムフィルター９が知られている。こ
のハニカムフィルター９は，通気性の濾過壁９３により
区切られた多数の通路を有すると共に，該通路はその片
側面９５（同図上方）をセラミック閉塞材８により閉塞
した第１通路９１と，他側面９６（同図下方）をセラミ
ック閉塞材８により閉塞した第２通路９２とからなる。2. Description of the Related Art Conventionally, as a honeycomb filter for collecting the particulates, a honeycomb filter 9 made of ceramic as shown in FIG. 6 is known. The honeycomb filter 9 has a large number of passages separated by a gas-permeable filter wall 93. The passages include a first passage 91 whose one side surface 95 (upper side in the figure) is closed by a ceramic closing member 8, and other passages. The second passage 92 has a side surface 96 (the lower side in the figure) closed by the ceramic closing member 8.
【０００３】また，第１通路９１の端部におけるセラミ
ック閉塞材８の内部には，金属線ヒータ７を内蔵させて
いる（後述の図１参照）。そして，内燃機関の排気ガス
は，同図に矢印で示すごとく，第２通路９２から入って
濾過壁９３を通過し，第１通路９１より外部へ流入す
る。このとき排気ガス中のパティキュレートが濾過壁９
３に捕集される。また，フィルターの再生時に，捕集し
たパティキュレートを燃焼除去するため，上記金属線ヒ
ータ７を通電加熱する。また，上記燃焼促進のため，濾
過壁９３にはバナジン酸銀等の触媒を担持させることも
ある。Further, a metal wire heater 7 is built in the ceramic closing member 8 at the end of the first passage 91 (see FIG. 1 described later). Then, the exhaust gas of the internal combustion engine enters through the second passage 92, passes through the filter wall 93, and flows in from the first passage 91 to the outside, as indicated by arrows in FIG. At this time, the particulates in the exhaust gas are
Collected in 3. When the filter is regenerated, the metal wire heater 7 is energized and heated to burn and remove the collected particulates. Further, a catalyst such as silver vanadate may be supported on the filter wall 93 to promote the combustion.
【０００４】ところで，上記ハニカムフィルターの製造
方法としては，特開昭５７−７２１５号公報，特開昭５
９−５４６８３号公報，特開平３−１６９３１２号公報
に示される方法がある。これらの方法は，閉塞前のフィ
ルター本体の一端面全体にフィルムを貼り，閉塞すべき
通路の該当位置において該フィルムに穴を明け，その穴
よりセラミック閉塞材８を圧入する方法である。Incidentally, as a method for manufacturing the above-mentioned honeycomb filter, Japanese Patent Application Laid-Open Nos.
There is a method disclosed in JP-A-9-54683 and JP-A-3-169312. In these methods, a film is applied to the entire end surface of the filter body before closing, a hole is formed in the film at a corresponding position of a passage to be closed, and a ceramic closing member 8 is press-fitted through the hole.
【０００５】[0005]
【解決しようとする課題】しかしながら，この従来法に
おいては，金属線ヒータ７を設ける側の端部では，その
端面から金属線ヒータ７が少し突出しているため（後述
の図２参照）上記フィルムを上記端面に平滑に貼ること
が困難である。そのため，セラミック閉塞材を押入する
際に閉塞すべき通路以外の通路に，セラミック閉塞材が
入り込んでしまうこともある。However, in this conventional method, at the end on the side where the metal wire heater 7 is provided, the metal wire heater 7 slightly protrudes from the end face (see FIG. 2 described later). It is difficult to apply it smoothly to the end face. Therefore, when the ceramic plugging material is pushed in, the ceramic plugging material may enter a passage other than a passage to be closed.
【０００６】また，金属線ヒータ付ハニカムフィルター
は，再生の際に熱衝撃が加わるため，金属線ヒータを内
蔵させない側のセラミック閉塞材としては，フィルター
本体と同材質のものを用いることが好ましい。一方，金
属線ヒータを内蔵させる側のセラミック閉塞材として
は，フィルター本体と金属線ヒータとの中間の熱膨張係
数を有する材料が好ましい。また，一般的にはフィルタ
ー本体の材質としてはセラミックであるため，その焼成
温度は金属線ヒータの軟化温度よりも高い。In addition, since a honeycomb filter with a metal wire heater receives a thermal shock at the time of regeneration, it is preferable to use the same material as that of the filter body as the ceramic plugging material on the side where the metal wire heater is not incorporated. On the other hand, a material having a thermal expansion coefficient intermediate between that of the filter body and the metal wire heater is preferable as the ceramic plugging material on the side where the metal wire heater is incorporated. In addition, since the material of the filter body is generally ceramic, the firing temperature is higher than the softening temperature of the metal wire heater.
【０００７】それ故，まず一方の端部に金属線ヒータを
配置すると共に，低温焼結セラミック閉塞材で閉塞し，
金属線ヒータを内蔵させている。そして，この閉塞作業
は，一方の端部にフィルムを貼り，閉塞すべき端部に穴
をあけ，それぞれに上記金属線ヒータとセラミック閉塞
材を入れている。Therefore, first, a metal wire heater is arranged at one end and closed with a low-temperature sintered ceramic closing material.
Built-in metal wire heater. In this closing operation, a film is attached to one end, a hole is made in an end to be closed, and the above-mentioned metal wire heater and ceramic closing material are put in each.
【０００８】しかし，閉塞すべき通路が多数あるため
に，上記フィルムに穴を１個づつ明けることは大変な作
業である。また，多数の通路に対して上記セラミック閉
塞材を押入すべき位置を間違わないようにしなければな
らない。そのため，セラミック閉塞材の閉塞作業は煩雑
であると共に，長時間を要していた。However, since there are many passages to be closed, it is a difficult operation to make holes in the film one by one. In addition, it is necessary to make sure that the position where the ceramic plugging material is to be pushed into many passages is not mistaken. Therefore, the work of closing the ceramic closing material is complicated and takes a long time.
【０００９】更にまた，フィルムに穴を明けこの部分よ
りセラミック材を押入れているので，フィルム厚だけセ
ラミック材が突き出した形となり，平面度が悪くなって
しまう。そのため，突き出た部分を削り取る作業が必要
となる。本発明は，かかる従来の問題点に鑑み，正確に
かつ短時間で，セラミック閉塞材の閉塞を行うことがで
きる，ハニカムフィルターの製造方法を提供しようとす
るものである。Further, since a hole is formed in the film and the ceramic material is pushed in from this portion, the ceramic material protrudes by the thickness of the film, resulting in poor flatness. Therefore, it is necessary to cut off the protruding portion. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a method for manufacturing a honeycomb filter capable of closing a ceramic closing member accurately and in a short time.
【００１０】[0010]
【課題の解決手段】本発明は，濾過壁により区切られた
多数の通路を有すると共に，これら通路はその片側面を
第１セラミック閉塞材により閉塞した第１通路と，他側
面を第２セラミック閉塞材により閉塞した第２通路とか
らなる，セラミック製ハニカムフィルターを製造するに
当たり，上記閉塞前のフィルター本体を準備し，該フィ
ルター本体の他側面において上記第２通路の端部に第２
セラミック閉塞材を押入し，焼結することにより該端部
を閉塞し，次に，上記閉塞を行なった他側面を下方にし
て上記第２通路内に熱硬化性樹脂粉末を落下させて上記
第２セラミック閉塞材の上に堆積させ，次に，上記他側
面とは反対側の片側面を板状体で仮に覆うと共に該片側
面を下方に逆転させ，上記第２セラミック閉塞材上の上
記熱硬化性樹脂粉末を上記板状体上に落下，堆積させ，
次に，上記熱硬化性樹脂粉末を加熱硬化させて第２通路
の端部にマスク部を形成し，次に，上記片側面において
上記マスク部を形成していない第１通路の端部に第１セ
ラミック閉塞材を押入し，次いで加熱することにより，
上記マスク部を焼失させて第２通路を開口させると共
に，上記第１セラミック閉塞材をフィルター本体と焼結
させて第１通路の端部を閉塞することを特徴とするハニ
カムフィルターの製造方法にある。According to the present invention, there are provided a plurality of passages separated by a filtration wall, wherein the passages have a first passage closed on one side by a first ceramic closing member and a second ceramic closing on the other side. In manufacturing a ceramic honeycomb filter composed of a second passage closed by a material, a filter body before the above-mentioned blockage is prepared, and a second side of the filter body is provided on an end of the second passage on the other side surface of the filter body.
The end portion is closed by pushing a ceramic plugging material and sintering, and then the thermosetting resin powder is dropped into the second passage with the other side face closed down, and the powder is dropped into the second passage. (2) depositing on the ceramic closing material, and temporarily covering one side opposite to the other side with a plate-like body and reversing the one side downward; The curable resin powder is dropped and deposited on the plate,
Next, the thermosetting resin powder is heat-cured to form a mask at the end of the second passage, and then to the end of the first passage where the mask is not formed on one side surface. 1 By inserting the ceramic plugging material and then heating,
A method for manufacturing a honeycomb filter, comprising burning off the mask portion to open a second passage, and sintering the first ceramic closing material with a filter body to close an end of the first passage. .
【００１１】本発明において最も注目すべきことは，予
め第２通路の他側面の端部を第２セラミック閉塞材によ
り焼成，閉塞しておき，次いで熱硬化性樹脂粉末により
この第２通路の反対側（即ち片側面）の端部にマスク部
を設けて第２通路の両端部を閉塞し，次いで第１通路に
おける閉塞すべき端部に第１セラミック閉塞材を押入
し，その後これらを加熱して該セラミック閉塞材を焼結
してフィルター本体に固定すると共に上記マスク部を焼
失させて第２通路の端部を開口させることである。The most remarkable point in the present invention is that the end of the other side surface of the second passage is preliminarily fired and closed with a second ceramic closing material, and then the opposite of the second passage is filled with a thermosetting resin powder. A mask portion is provided at the end of the side (that is, one side surface) to close both ends of the second passage, and then the first ceramic closing material is pushed into the end of the first passage to be closed, and then these are heated. Then, the ceramic plugging material is sintered and fixed to the filter body, and the mask portion is burned off to open the end of the second passage.
【００１２】本発明において，第２通路の端部を閉塞す
る第２セラミック閉塞材は，上記マスク部を形成する前
に，予めフィルター本体に対して焼結固定させておく。
上記熱硬化性樹脂粉末は，上記のごとく第２セラミック
閉塞材によって端部が閉塞された第２通路の中にまず落
下投入し，第２セラミック閉塞材の上に堆積させる。そ
の後，第２通路の開口している端部，即ちフィルター本
体の片側面を板状体で仮被覆して，フィルター本体を上
下逆転させる。これによって，第２通路内の熱硬化性樹
脂粉末は板状体上に堆積する。In the present invention, the second ceramic closing member for closing the end of the second passage is sintered and fixed to the filter body before forming the mask portion.
The thermosetting resin powder is first dropped into the second passage whose end is closed by the second ceramic closing material as described above, and is deposited on the second ceramic closing material. Thereafter, the open end of the second passage, that is, one side of the filter body is temporarily covered with a plate-like body, and the filter body is turned upside down. Thereby, the thermosetting resin powder in the second passage is deposited on the plate-like body.
【００１３】そこで，上記熱硬化性樹脂粉末を加熱し硬
化させる。これにより，第２通路の端部にマスク部が形
成される。マスク部を形成するための熱硬化性樹脂粉末
としては，エポキシ樹脂，高密度ポリエチレン樹脂，フ
ェノール樹脂などがある。また，該熱硬化性樹脂粉末と
しては，加熱硬化時に発泡体となり，強度が高くなるも
のが好ましい。かかる材料としては，上記樹脂に加熱発
泡剤を混入したものがある。上記板状体としては，金属
板を用いることが好ましい。これにより熱硬化性樹脂粉
末を容易に加熱することができる。また，上記マスク部
は，第１セラミック閉塞材を押入する際に外れない強度
に形成しておく。Therefore, the thermosetting resin powder is heated and cured. Thereby, a mask portion is formed at the end of the second passage. Examples of the thermosetting resin powder for forming the mask portion include an epoxy resin, a high-density polyethylene resin, and a phenol resin. Further, as the thermosetting resin powder, a powder which becomes a foam when cured by heating and has high strength is preferable. As such a material, there is a material obtained by mixing a heating foaming agent with the above resin. It is preferable to use a metal plate as the plate. Thereby, the thermosetting resin powder can be easily heated. Further, the mask portion is formed so as not to come off when the first ceramic plugging material is pushed in.
【００１４】次に，第１セラミック閉塞材の押入に当た
っては，該当する端部内に従来と同様に高粘度のセラミ
ック閉塞材を圧入する方法，又はセラミック閉塞材のス
ラリー中にフィルター本体端部を浸漬する方法などがあ
る。上記圧入は，上記片側面の端部に対して高粘度のセ
ラミック閉塞材を押し付ける。これにより，マスク部の
ない部分のみに第１セラミック閉塞材が押入される。Next, in pushing in the first ceramic plugging material, a method of press-fitting a high-viscosity ceramic plugging material into the corresponding end portion as before, or immersing the end of the filter body in a slurry of the ceramic plugging material. There are ways to do that. The press-fitting presses a high-viscosity ceramic closing material against the end of the one side surface. As a result, the first ceramic plugging material is pushed into only the portion without the mask portion.
【００１５】また，フィルター本体は，主にセラミック
粉末の焼結体を用いるが，最初に閉塞する第２セラミッ
ク閉塞材の押入時には生成形体を用いることもできる。
生成形体を用いる場合には，第２セラミック閉塞材を加
熱焼結する際にフィルター本体も共に焼結される。ま
た，上記第２通路を予め閉塞しておくためのセラミック
閉塞材としては，フィルター本体と同様の材質のコージ
ェライトなどのセラミックス材料を用いる。第１セラミ
ック閉塞材としては，シリカ−アルミナ系等がある。The filter body is mainly made of a sintered body of ceramic powder, but it is also possible to use a formed body when pushing in the second ceramic closing material which is first closed.
When the green compact is used, the filter body is sintered together when the second ceramic plugging material is heated and sintered. A ceramic material such as cordierite of the same material as that of the filter body is used as a ceramic closing material for closing the second passage in advance. As the first ceramic plugging material, there is a silica-alumina type or the like.
【００１６】[0016]
【作用及び効果】本発明の製造方法においては，フィル
ター本体の他側面において第２通路の端部を第２セラミ
ック閉塞材により閉塞しておき，該第２通路内に熱硬化
性樹脂粉末を落下，堆積させ，その後上下を逆転させ，
これを加熱硬化させて，マスク部を形成している。その
ため，熱硬化性樹脂粉末の投入が容易であると共に，マ
スク部の形成も容易である。According to the manufacturing method of the present invention, the end of the second passage is closed by the second ceramic closing member on the other side surface of the filter body, and the thermosetting resin powder is dropped into the second passage. , Deposited, then turned upside down,
This is cured by heating to form a mask portion. Therefore, it is easy to supply the thermosetting resin powder, and it is easy to form the mask portion.
【００１７】また，上記マスク部を形成した側，即ちフ
ィルター本体の片側面において，残っている通路である
第１通路の端部に，第１セラミック閉塞材を押入し，加
熱する。これにより，熱硬化性樹脂のマスク部は焼失し
て第２通路の片側面が開口し，また第１セラミック閉塞
材はそれ自体が焼結すると共にフィルター本体の濾過壁
と焼結し合う。つまり，マスク部を形成した部分が第２
通路の流入口又は流出口となるのである。On the side where the mask portion is formed, that is, on one side of the filter body, the first ceramic plugging material is pushed into the end of the first passage, which is the remaining passage, and heated. As a result, the mask portion of the thermosetting resin is burned off and one side surface of the second passage is opened, and the first ceramic plugging material sinters itself and sinters with the filter wall of the filter body. That is, the portion where the mask portion is formed is the second portion.
It becomes the inlet or outlet of the passage.
【００１８】上記のごとく，本発明においては，第１セ
ラミック閉塞材を押入する部分以外は予めマスク部によ
って閉止されているので，これらを閉塞所望通路にのみ
正確に，しかも短時間に押入することができる。したが
って，本発明によれば，正確かつ短時間で，セラミック
閉塞材の閉塞を行うことができる，ハニカムフィルター
の製造方法を提供することができる。As described above, in the present invention, since the portion other than the portion into which the first ceramic plugging member is pushed in is previously closed by the mask portion, it is necessary to press them into only the passage desired to be blocked accurately and in a short time. Can be. Therefore, according to the present invention, it is possible to provide a method for manufacturing a honeycomb filter capable of closing a ceramic closing member accurately and in a short time.
【００１９】[0019]
【実施例】本発明の実施例にかかる，ハニカムフィルタ
ーの製造方法につき，図１〜図５を用いて説明する。ま
ず，本例において製造するハニカムフィルターは，図
１，図２に示すごとく，濾過壁９３によって区切られた
多数の通路を有すると共に，これら通路はその片側面９
５を金属線ヒータ内蔵の第１セラミック閉塞材８１によ
り閉塞した第１通路９１と，他側面９６を第２セラミッ
ク閉塞材８２により閉塞した第２通路９２とからなる。
上記両通路は互いに隣接している。また，図１に示すご
とく，ハニカムフィルターの片側面においては，第１セ
ラミック閉塞材が市松模様に設けてある。一方，他側面
においては，第２セラミック閉塞材が市松模様に設けて
ある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing a honeycomb filter according to an embodiment of the present invention will be described with reference to FIGS. First, as shown in FIGS. 1 and 2, the honeycomb filter manufactured in this example has a number of passages separated by a filtration wall 93, and these passages are formed on one side 9 of the passage.
5 comprises a first passage 91 closed by a first ceramic closing member 81 with a built-in metal wire heater, and a second passage 92 closed on the other side 96 by a second ceramic closing member 82.
The two passages are adjacent to each other. Further, as shown in FIG. 1, on one side surface of the honeycomb filter, a first ceramic plugging material is provided in a checkered pattern. On the other hand, on the other side, the second ceramic plugging material is provided in a checkered pattern.
【００２０】次に，上記ハニカムフィルターを製造する
に当っては，まず図３（Ａ）に示すごとく，閉塞前のフ
ィルター本体９０を準備し，図３（Ｂ）に示すごとく，
フィルター本体９０の他側面９６において，第２通路９
２の端部に第２セラミック閉塞材８２を閉塞する。この
閉塞は，第２セラミック閉塞材８２を上記端部に押入
し，加熱焼結することにより行なう。これにより，第２
セラミック閉塞材８２は，フィルター本体９０に固定さ
れる。Next, in manufacturing the honeycomb filter, first, as shown in FIG. 3A, a filter main body 90 before closing is prepared, and as shown in FIG.
On the other side 96 of the filter body 90, the second passage 9
A second ceramic closing member 82 is closed at the end of the second ceramic closing member 82. This closing is performed by pressing the second ceramic closing member 82 into the above-mentioned end and sintering it by heating. As a result, the second
The ceramic closing member 82 is fixed to the filter body 90.
【００２１】次に，図４に示すごとく，上記第１セラミ
ック閉塞材による閉塞を行なった他側面９６を下方にし
て上記第２通路９２内に熱硬化性樹脂粉末４を落下させ
る。このとき，熱硬化性樹脂粉末４はフィルター本体９
０の上方より落下させる。そのため，熱硬化性樹脂粉末
４は第２通路９２内に入ったものは，その中の第２セラ
ミック閉塞材８２の上に堆積し，一方第１通路９１内に
入ったものは通過してしまう。Next, as shown in FIG. 4, the thermosetting resin powder 4 is dropped into the second passage 92 with the other side surface 96 closed by the first ceramic closing material facing downward. At this time, the thermosetting resin powder 4 is
Drop from above 0. Therefore, the thermosetting resin powder 4 that has entered the second passage 92 accumulates on the second ceramic closing member 82 therein, while the one that has entered the first passage 91 passes. .
【００２２】次に，図４（Ｂ）に示すごとく，上記他側
面９６とは反対側の片側面９５を板状体５で仮に覆うと
共に該片側面９５を下方に逆転させる。これにより，同
図に示すごとく，板状体５の上において第２通路９２の
端部に，熱硬化性樹脂粉末４が落下堆積する。そこで，
上記板状体５を電気加熱して，熱硬化性樹脂粉末４を加
熱硬化させて，第２通路９２の端部にマスク部４０を形
成する。Next, as shown in FIG. 4B, the one side 95 opposite to the other side 96 is temporarily covered with the plate-shaped body 5 and the one side 95 is turned downward. Thereby, the thermosetting resin powder 4 drops and accumulates on the end of the second passage 92 on the plate 5 as shown in FIG. Therefore,
The plate member 5 is electrically heated, and the thermosetting resin powder 4 is cured by heating, so that the mask portion 40 is formed at the end of the second passage 92.
【００２３】次に，図５（Ａ）に示すごとく，上記片側
面９５において，上記マスク部４０を形成していない第
１通路９１の端部に金属線ヒータ７を挿入する。次い
で，該金属線ヒータ７を覆うように上記端部内に第１セ
ラミック閉塞材８１を押入する。次に，これらを，金属
線ヒータ７の融点よりは低く，かつ第１セラミック閉塞
材８１が焼結する温度において加熱する。これにより，
図５（Ｂ）に示すごとく，第１セラミック閉塞材８１が
焼結されてフィルター本体９０の濾過壁９３に固定され
る。また，マスク部４０は，上記加熱により焼失し，第
２通路９２の片側面９５が開口する。Next, as shown in FIG. 5A, the metal wire heater 7 is inserted into the end of the first passage 91 where the mask portion 40 is not formed on the one side surface 95. Next, the first ceramic closing member 81 is pushed into the end portion so as to cover the metal wire heater 7. Next, these are heated at a temperature lower than the melting point of the metal wire heater 7 and at a temperature at which the first ceramic closing member 81 is sintered. This gives
As shown in FIG. 5B, the first ceramic closing member 81 is sintered and fixed to the filtering wall 93 of the filter body 90. Further, the mask portion 40 is burned off by the above-mentioned heating, and one side surface 95 of the second passage 92 is opened.
【００２４】以上により，前記図１，図２に示したハニ
カムフィルターが得られる。このハニカムフィルター
は，図２に示すごとく例えば，上記第２通路９２をガス
流入通路とし，第１通路９１をガス排出通路として用い
る。そして，再生時には金属線ヒータ７を加熱し，フィ
ルター本体を高温となして，捕集物の燃焼除去を行な
う。上記第２通路，第１通路はその用途を逆にすること
もできる。なお，図１において，符号７６はハニカムフ
ィルター９を装着するケース，７５は金属線ヒータのタ
ーミナルある。As described above, the honeycomb filter shown in FIGS. 1 and 2 is obtained. In this honeycomb filter, for example, as shown in FIG. 2, the second passage 92 is used as a gas inflow passage, and the first passage 91 is used as a gas exhaust passage. Then, at the time of regeneration, the metal wire heater 7 is heated, the temperature of the filter body is raised, and the collected matter is burned and removed. The use of the second passage and the first passage can be reversed. In FIG. 1, reference numeral 76 denotes a case for mounting the honeycomb filter 9, and reference numeral 75 denotes a terminal of a metal wire heater.
【００２５】また，本例の製造方法においては，フィル
ター本体９０はコージエライト製で，直径１４０ｍｍ，
長さ１３０ｍｍ，各通路は四角状で一片の長さは１．６
ｍｍ，濾過壁厚みは０．４５ｍｍであった。また，熱膨
張係数は１×１０-6／℃であった。熱硬化性樹脂粉末と
しては，エポキシ樹脂５５重量部と，高密度ポリエチレ
ン樹脂４５重量部と，発泡剤その他３重量部とよりなる
混合粉末を用いた。この熱硬化性樹脂粉末の加熱硬化
は，約１５０℃において行った。In the manufacturing method of this embodiment, the filter body 90 is made of cordierite and has a diameter of 140 mm.
130mm in length, each passage is square and one piece is 1.6 in length
mm, and the filtration wall thickness was 0.45 mm. The coefficient of thermal expansion was 1 × 10 −6 / ° C. As the thermosetting resin powder, a mixed powder comprising 55 parts by weight of an epoxy resin, 45 parts by weight of a high-density polyethylene resin, and 3 parts by weight of a foaming agent and the like was used. The heat curing of the thermosetting resin powder was performed at about 150 ° C.
【００２６】金属線ヒータは，鉄−クロム−アルミ系材
料からなり，線径０．５５ｍｍ，熱膨張係数１１×１０
-6／℃のものを用いた。また，金属線ヒータを内蔵させ
る第２セラミック閉塞材としては，コージエライト材で
熱膨張係数１×１０-6／℃のものを用いた。一方，第１
セラミック閉塞材としては，シリカ−アルミナ系材料で
熱膨張係数４×１０-6／℃のものを用いた。また，両セ
ラミック閉塞材の押入は，スラリー浸漬法により行っ
た。このスラリーは，各セラミック材料１００重量部と
水８０重量部とを混合したものである。また，第２セラ
ミック閉塞材の焼結，熱硬化性樹脂粉末の焼失のための
加熱は，約６００℃で６０分間行った。これにより，目
的とするハニカムフィルターが得られた。The metal wire heater is made of an iron-chromium-aluminum material, has a wire diameter of 0.55 mm, and has a thermal expansion coefficient of 11 × 10.
-6 / ° C was used. The cordierite material having a thermal expansion coefficient of 1 × 10 −6 / ° C. was used as the second ceramic plugging material in which the metal wire heater was built. On the other hand, the first
As the ceramic plugging material, a silica-alumina-based material having a thermal expansion coefficient of 4 × 10 −6 / ° C. was used. In addition, both ceramic plugs were pushed by the slurry dipping method. This slurry is a mixture of 100 parts by weight of each ceramic material and 80 parts by weight of water. The heating for sintering the second ceramic plugging material and burning out the thermosetting resin powder was performed at about 600 ° C. for 60 minutes. As a result, a desired honeycomb filter was obtained.
【００２７】上記のごとく，本例においては，フィルタ
ー本体９０の他側面９５において第２通路９２の端部を
第２セラミック閉塞材８２により予め閉塞しておき，こ
の中へ熱硬化性樹脂粉末４を落下堆積させ，上下方向を
逆にして熱硬化性樹脂粉末４を第２通路９２の片側面９
５に堆積させ，これを加熱してマスク部４０を形成して
いる。そのため，熱硬化性樹脂粉末の投入が容易で，ま
たマスク部４０の形成も容易である。As described above, in the present embodiment, the end of the second passage 92 on the other side surface 95 of the filter body 90 is previously closed by the second ceramic closing member 82, and the thermosetting resin powder 4 The thermosetting resin powder 4 is turned upside down and the thermosetting resin powder 4 is placed on one side 9 of the second passage 92.
5 and heated to form a mask portion 40. Therefore, it is easy to supply the thermosetting resin powder, and the formation of the mask portion 40 is also easy.
【００２８】また，マスク部４０を形成した片側面９５
において，第１通路９１の端部に金属線ヒータ及び第１
セラミック閉塞材を押入すれば良いので，その押入も容
易である。また，これらを加熱することにより，第１セ
ラミック閉塞材を焼結して閉塞すると共にマスク部４０
を焼失させて開口させることができる。したがって，正
確かつ短時間に，金属線ヒータ７の内蔵，第１，第２セ
ラミック閉塞材８１，８２の閉塞を行なうことができ
る。Further, one side 95 on which the mask portion 40 is formed
At the end of the first passage 91, the metal wire heater and the first
Since it suffices to press in the ceramic plugging material, the press-in is also easy. Further, by heating these, the first ceramic plugging material is sintered and closed, and the mask portion 40 is closed.
Can be burned out and opened. Therefore, the built-in metal wire heater 7 and the closing of the first and second ceramic closing members 81 and 82 can be performed accurately and in a short time.
【００２９】金属線ヒータとしては鉄−クロム−アルミ
系，ニクロム線などの材料からなる金属線を用いる。該
金属線ヒータの熱膨張係数は，第１セラミック閉塞材と
フィルター本体との中間であることが好ましい。これに
より，前記再生時の加熱によって，フィルター本体，第
１セラミック閉塞材が熱衝撃を受けることがない。ま
た，第１セラミック閉塞材は，金属線ヒータを内蔵させ
た状態で加熱焼結するため，金属線ヒータの融点以下の
温度で焼結する，低温焼成セラミック材料を用いる。As the metal wire heater, a metal wire made of a material such as an iron-chromium-aluminum or nichrome wire is used. The coefficient of thermal expansion of the metal wire heater is preferably intermediate between the first ceramic plugging material and the filter body. Thus, the filter body and the first ceramic plugging material are not subjected to thermal shock due to the heating during the regeneration. In addition, the first ceramic plugging material is a low-temperature fired ceramic material that sinters at a temperature equal to or lower than the melting point of the metal wire heater in order to heat and sinter with the metal wire heater incorporated therein.
【００３０】また，本発明のハニカムフィルターは，通
常は，金属線ヒータ及び第１セラミック閉塞材を設けた
上記第１通路をガス排出通路として，一方第２通路をガ
ス流入通路として用いる（図２参照）。しかし，これと
は逆に，上記第１通路をガス流入通路に，第２通路をガ
ス流出通路にして用いることもできる。さらに，上記実
施例では，第１セラミック閉塞材に金属線ヒータを内蔵
させたものを採用したが，本発明は，これに限るもので
はなく，金属線ヒータを内蔵しなくてもよい。In the honeycomb filter of the present invention, the first passage provided with the metal wire heater and the first ceramic plug is usually used as a gas discharge passage, while the second passage is used as a gas inflow passage (FIG. 2). reference). However, conversely, the first passage may be used as a gas inflow passage and the second passage may be used as a gas outflow passage. Further, in the above-described embodiment, the first ceramic closing member having a built-in metal wire heater is adopted, but the present invention is not limited to this, and the metal wire heater may not be built in.
【図１】実施例のハニカムフィルターの平面図。FIG. 1 is a plan view of a honeycomb filter of an embodiment.
【図２】実施例のハニカムフィルターの断面説明図。FIG. 2 is an explanatory cross-sectional view of a honeycomb filter of an embodiment.
【図３】実施例のハニカムフィルターの製造工程説明図
で，第１セラミック閉塞材を閉塞する状態の説明図。FIG. 3 is an explanatory diagram of a manufacturing process of the honeycomb filter of the embodiment, illustrating a state in which a first ceramic closing member is closed.
【図４】実施例のハニカムフィルターの製造工程説明図
で，熱硬化性樹脂粉末によるマスク部形成の説明図。FIG. 4 is an explanatory diagram of a manufacturing process of the honeycomb filter of the example, illustrating the formation of a mask portion using thermosetting resin powder.
【図５】実施例のハニカムフィルターの製造工程説明図
で，金属線ヒータ及び第２セラミック閉塞材の形成の説
明図。FIG. 5 is an explanatory view of a manufacturing process of the honeycomb filter of the embodiment, which is an explanatory view of formation of a metal wire heater and a second ceramic plug.
【図６】従来のハニカムフィルターの断面図。FIG. 6 is a cross-sectional view of a conventional honeycomb filter.
４．．．熱硬化性樹脂粉末， ４０．．．マスク部， ５．．．板状体， ７．．．金属線ヒータ， ８．．．セラミック閉塞材， ８１．．．第１セラミック閉塞材， ８２．．．第２セラミック閉塞材， ９．．．ハニカムフィルター， ９０．．．フィルター本体， ９１．．．第１通路， ９２．．．第２通路， ９３．．．濾過壁， 4. . . Thermosetting resin powder, 40. . . Mask part, 5. . . 6. plate-like body, . . 7. metal wire heater, . . Ceramic closing material, 81. . . First ceramic plugging material, 82. . . 8. second ceramic plug, . . Honeycomb filter, 90. . . Filter body, 91. . . First passage, 92. . . Second passage, 93. . . Filtration wall,
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭59−54682（ＪＰ，Ａ) 特開 昭59−54683（ＪＰ，Ａ) 特開 平３−169312（ＪＰ，Ａ) 特開 昭57−7215（ＪＰ，Ａ) 特開 昭62−144726（ＪＰ，Ａ) 特開 平３−232511（ＪＰ，Ａ) 特開 昭62−57624（ＪＰ，Ａ) 特開 昭61−138513（ＪＰ，Ａ) 特開 昭57−147415（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 39/00 - 39/20 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-54682 (JP, A) JP-A-59-54683 (JP, A) JP-A-3-169312 (JP, A) JP-A-57-54683 7215 (JP, A) JP-A-62-144726 (JP, A) JP-A-3-232511 (JP, A) JP-A-62-257624 (JP, A) JP-A-61-138513 (JP, A) JP-A-57-147415 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B01D 39/00-39/20
Claims (1)
すると共に，これら通路はその片側面を第１セラミック
閉塞材により閉塞した第１通路と，他側面を第２セラミ
ック閉塞材により閉塞した第２通路とからなる，セラミ
ック製ハニカムフィルターを製造するに当たり，上記閉
塞前のフィルター本体を準備し，該フィルター本体の他
側面において上記第２通路の端部に第２セラミック閉塞
材を押入し，焼結することにより該端部を閉塞し，次
に，上記閉塞を行なった他側面を下方にして上記第２通
路内に熱硬化性樹脂粉末を落下させて上記第２セラミッ
ク閉塞材の上に堆積させ，次に，上記他側面とは反対側
の片側面を板状体で仮に覆うと共に該片側面を下方に逆
転させ，上記第２セラミック閉塞材上の上記熱硬化性樹
脂粉末を上記板状体上に落下，堆積させ，次に，上記熱
硬化性樹脂粉末を加熱硬化させて第２通路の端部にマス
ク部を形成し，次に，上記片側面において上記マスク部
を形成していない第１通路の端部に第１セラミック閉塞
材を押入し，次いで加熱することにより，上記マスク部
を焼失させて第２通路を開口させると共に，上記第１セ
ラミック閉塞材をフィルター本体と焼結させて第１通路
の端部を閉塞することを特徴とするハニカムフィルター
の製造方法。A first passage having one side closed by a first ceramic closing member and a second passage closing the other side of the passage by a second ceramic closing member. In manufacturing a ceramic honeycomb filter composed of two passages, the filter body before closing is prepared, and a second ceramic closing member is pushed into the end of the second passage on the other side surface of the filter body and fired. Then, the thermosetting resin powder is dropped into the second passage with the other side face closed down, and deposited on the second ceramic closing material. Next, the one side opposite to the other side is temporarily covered with a plate-like body, and the one side is turned downward, so that the thermosetting resin powder on the second ceramic closing member is removed from the plate-like body. Above the body And heat-curing the thermosetting resin powder to form a mask portion at the end of the second passage. Then, the first side on which the mask portion is not formed on one side surface is formed. The first ceramic plugging material is pushed into the end of the passage and then heated to burn off the mask portion and open the second passage, and to sinter the first ceramic plugging material with the filter body to form the second plug. A method for manufacturing a honeycomb filter, comprising closing an end of one passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23288692A JP3232680B2 (en) | 1992-08-07 | 1992-08-07 | Manufacturing method of honeycomb filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23288692A JP3232680B2 (en) | 1992-08-07 | 1992-08-07 | Manufacturing method of honeycomb filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0655021A JPH0655021A (en) | 1994-03-01 |
| JP3232680B2 true JP3232680B2 (en) | 2001-11-26 |
Family
ID=16946385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23288692A Expired - Fee Related JP3232680B2 (en) | 1992-08-07 | 1992-08-07 | Manufacturing method of honeycomb filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3232680B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9787055B2 (en) | 2014-04-11 | 2017-10-10 | Osram Opto Semiconductors Gmbh | Semiconductor strip laser and semiconductor component |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6827754B2 (en) | 2001-09-13 | 2004-12-07 | Hitachi Metals, Ltd. | Ceramic honeycomb filter |
| US6627123B2 (en) * | 2002-02-28 | 2003-09-30 | Corning Incorporated | Method for selectively plugging a honeycomb |
-
1992
- 1992-08-07 JP JP23288692A patent/JP3232680B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9787055B2 (en) | 2014-04-11 | 2017-10-10 | Osram Opto Semiconductors Gmbh | Semiconductor strip laser and semiconductor component |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0655021A (en) | 1994-03-01 |
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