JP2018165031A - ハニカム構造体の製造方法 - Google Patents
ハニカム構造体の製造方法 Download PDFInfo
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Abstract
【解決手段】容量が7L以上の未焼成のハニカム成形体を乾燥する工程において、ハニカム成形体を誘電乾燥して、未焼成のハニカム成形体1が乾燥前に含む全水分の20〜80%の水分を除去した第1次乾燥ハニカム成形体を得る誘電乾燥工程10と、第1次乾燥ハニカム成形体についてマイクロ波乾燥を行って残余の水分を除去したハニカム乾燥体を得るマイクロ波乾燥工程20とを有し、マイクロ波乾燥工程20で得られる前記ハニカム乾燥体は、未焼成のハニカム成形体1が乾燥前に含む全水分の90%以上の水分が除去されたものである、ハニカム構造体の製造方法。
【選択図】図1
Description
本発明のハニカム構造体の製造方法の一実施形態としては、ハニカム成形体作製工程と、乾燥工程と、焼成工程と、を有している。これらの工程により、ハニカム構造体を製造することができる。具体的には、ハニカム成形体作製工程は、一方の端面である第1端面から他方の端面である第2端面まで延びる複数のセルを区画形成するセル壁を備える、容量が7L以上の未焼成のハニカム成形体を作製する工程である。この未焼成のハニカム成形体は、セラミック原料、及び水を含有する原料組成物から構成されるものである。乾燥工程は、作製した未焼成のハニカム成形体を乾燥してハニカム乾燥体を得る工程である。この乾燥工程は、誘電乾燥工程とマイクロ波乾燥工程とを有する。そして、誘電乾燥工程は、未焼成のハニカム成形体について誘電乾燥を行い、この未焼成のハニカム成形体が乾燥前に含む全水分の20〜80%の水分を除去した第1次乾燥ハニカム成形体を得る工程である。また、マイクロ波乾燥工程は、誘電乾燥工程によって得られた第1次乾燥ハニカム成形体についてマイクロ波乾燥を行って残余の水分を除去したハニカム乾燥体を得る工程である。このマイクロ波乾燥工程で得られるハニカム乾燥体は、未焼成のハニカム成形体が乾燥前に含む全水分の90%以上の水分が除去されたものである。更に、焼成工程は、得られたハニカム乾燥体を焼成し、ハニカム構造体を得る工程である。
ハニカム成形体作製工程では、上述のように、セラミック原料及び水を含有する原料組成物を成形して、一方の端面である第1端面から他方の端面である第2端面まで延びる複数のセルを区画形成するセル壁を備える未焼成のハニカム成形体を形成する。なお、未焼成のハニカム成形体とは、セラミック原料の粒子が、原料組成物をハニカム形状に成形したときの粒子形状を維持した状態で存在し、セラミック原料が焼結していない状態のものをいう。
乾燥工程は、作製した未焼成のハニカム成形体を乾燥してハニカム乾燥体を得る工程であり、誘電乾燥工程とマイクロ波乾燥工程とを有している。本発明が有する乾燥工程によれば、未焼成のハニカム成形体についてクラックやセルの変形の発生率を低くすることができる。その結果、生産性良くハニカム構造体を製造することができる。
本工程においては、未焼成のハニカム成形体が乾燥前に含む全水分の20〜80%の水分を除去した第1次乾燥ハニカム成形体を得る。即ち、未焼成のハニカム成形体が乾燥前に含む全水分の20〜80%の水分が除去された段階で本工程は終了となり、マイクロ波乾燥工程に移行することになる。誘電乾燥は、製品の中央部から加熱し、マイクロ波乾燥は外表面から加熱される。なお、誘電乾燥とマイクロ波乾燥のどちらか一方の乾燥方法のみで未焼成のハニカム成形体を乾燥させると、加熱がハニカム成形体の中央部又は外表面に集中してしまう。その結果、クラックやセルの変形が生じる。そこで、誘電乾燥とマイクロ波乾燥の両乾燥方法を組合せることにより、中央部と外表面との温度差を小さくすることができる。但し、先にマイクロ波乾燥を行うと、外表面が先に加熱されることによって外皮(外表面)からの乾燥収縮が生じるので、製品(ハニカム成形体)内部に圧力が加わりセルの変形が発生する。更に、誘電乾燥、マイクロ波乾燥の順に乾燥を行うとしても、誘電乾燥を終了する条件も重要となる。
本工程であるハニカム成形体のマイクロ波乾燥では、一般的に1,000〜10,000MHzの周波数が用いられる。
焼成工程では、上記乾燥工程で得られたハニカム乾燥体を焼成してハニカム構造体を得る。
まず、セラミック原料としてアルミナ、カオリン及びタルクを混合したコージェライト化原料を用い、有機バインダを含む結合材、造孔材、分散媒として水(36質量%)を混合し、混練して坏土を得た。造孔材には、吸水性樹脂を用いた。
表1、表2に示すように条件を変更した以外は、実施例1と同様にしてハニカム構造体を作製した。この方法におけるハニカム乾燥体及びハニカム構造体の評価結果を表3に示す。なお、比較例6〜8においては、誘電乾燥工程において未焼成のハニカム成形体の中央の温度が150℃超になっており、第1次乾燥ハニカム成形体の形状が崩れるおそれもあった。そのため、マイクロ波乾燥工程を行っていない。
Claims (4)
- セラミック原料、及び水を含有する原料組成物から構成され、一方の端面である第1端面から他方の端面である第2端面まで延びる複数のセルを区画形成するセル壁を備える、容量が7L以上の未焼成のハニカム成形体を作製するハニカム成形体作製工程と、
作製した前記未焼成のハニカム成形体を乾燥してハニカム乾燥体を得る乾燥工程と、
得られた前記ハニカム乾燥体を焼成し、ハニカム構造体を得る焼成工程と、を有しており、
前記乾燥工程が、
前記未焼成のハニカム成形体について誘電乾燥を行い、前記未焼成のハニカム成形体が乾燥前に含む全水分の20〜80%の水分を除去した第1次乾燥ハニカム成形体を得る誘電乾燥工程と、
前記誘電乾燥工程によって得られた前記第1次乾燥ハニカム成形体についてマイクロ波乾燥を行って残余の水分を除去したハニカム乾燥体を得るマイクロ波乾燥工程と、を有する工程であり、
前記マイクロ波乾燥工程で得られる前記ハニカム乾燥体は、前記未焼成のハニカム成形体が乾燥前に含む全水分の90%以上の水分が除去されたものであるハニカム構造体の製造方法。 - 前記乾燥工程における前記誘電乾燥工程に供する前記未焼成のハニカム成形体の乾燥前の含水率が、20〜60%である請求項1に記載のハニカム構造体の製造方法。
- 前記原料組成物には、造孔材として吸水性樹脂が含有されている請求項1または2に記載のハニカム構造体の製造方法。
- 前記乾燥工程における前記誘電乾燥工程に供する前記未焼成のハニカム成形体は円柱状であり、前記未焼成のハニカム成形体の端面における直径が220〜400mmであり、前記未焼成のハニカム成形体の前記セルの延びる方向の長さが200〜400mmであり、前記セル壁の厚さが30〜350μmである請求項1〜3のいずれか一項に記載のハニカム構造体の製造方法。
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009226633A (ja) * | 2008-03-19 | 2009-10-08 | Ngk Insulators Ltd | セラミックス成形体の乾燥方法 |
JP2010228219A (ja) * | 2009-03-26 | 2010-10-14 | Ngk Insulators Ltd | ハニカム成形体の乾燥方法 |
JP2011195344A (ja) * | 2010-03-17 | 2011-10-06 | Ngk Insulators Ltd | ハニカム成形体の乾燥方法 |
JP2013180413A (ja) * | 2012-02-29 | 2013-09-12 | Mitsubishi Heavy Ind Ltd | ハニカム構造体の乾燥方法 |
WO2015159823A1 (ja) * | 2014-04-14 | 2015-10-22 | 住友化学株式会社 | ハニカムフィルタの製造方法、及び、ハニカムフィルタ |
JP2016190397A (ja) * | 2015-03-31 | 2016-11-10 | 日本碍子株式会社 | ハニカム成形体のマイクロ波乾燥方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7090714B2 (en) * | 2002-06-17 | 2006-08-15 | Hitachi Metals, Ltd. | Ceramic honeycomb filter |
PL1698388T3 (pl) | 2003-12-26 | 2014-03-31 | Ngk Insulators Ltd | Sposób wytwarzania korpusu struktury plastra miodu |
CN101048352A (zh) * | 2004-10-29 | 2007-10-03 | 日本碍子株式会社 | 蜂窝结构体的制造方法以及蜂窝结构体 |
EP2083000B1 (en) * | 2006-10-31 | 2019-12-04 | NGK Insulators, Ltd. | Method for pretreating honeycomb formed article before firing |
JP5612588B2 (ja) | 2009-09-29 | 2014-10-22 | 日本碍子株式会社 | 目封止ハニカム構造体の製造方法 |
EP2623483B1 (en) * | 2010-09-29 | 2018-07-11 | NGK Insulators, Ltd. | Method for producing silicon carbide ceramic and method for producing honeycomb structure |
US9126869B1 (en) * | 2013-03-15 | 2015-09-08 | Ibiden Co., Ltd. | Method for manufacturing aluminum-titanate-based ceramic honeycomb structure |
JP2017063617A (ja) | 2015-09-28 | 2017-04-06 | テック・ワーク株式会社 | 培養装置 |
JP6559727B2 (ja) * | 2017-03-28 | 2019-08-14 | 日本碍子株式会社 | ハニカム構造体の製造方法 |
JP6562960B2 (ja) * | 2017-03-28 | 2019-08-21 | 日本碍子株式会社 | ハニカム構造体の製造方法 |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009226633A (ja) * | 2008-03-19 | 2009-10-08 | Ngk Insulators Ltd | セラミックス成形体の乾燥方法 |
JP2010228219A (ja) * | 2009-03-26 | 2010-10-14 | Ngk Insulators Ltd | ハニカム成形体の乾燥方法 |
JP2011195344A (ja) * | 2010-03-17 | 2011-10-06 | Ngk Insulators Ltd | ハニカム成形体の乾燥方法 |
JP2013180413A (ja) * | 2012-02-29 | 2013-09-12 | Mitsubishi Heavy Ind Ltd | ハニカム構造体の乾燥方法 |
WO2015159823A1 (ja) * | 2014-04-14 | 2015-10-22 | 住友化学株式会社 | ハニカムフィルタの製造方法、及び、ハニカムフィルタ |
JP2016190397A (ja) * | 2015-03-31 | 2016-11-10 | 日本碍子株式会社 | ハニカム成形体のマイクロ波乾燥方法 |
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