JPH03275570A - Method for heating ceramics by induction - Google Patents
Method for heating ceramics by inductionInfo
- Publication number
- JPH03275570A JPH03275570A JP2073892A JP7389290A JPH03275570A JP H03275570 A JPH03275570 A JP H03275570A JP 2073892 A JP2073892 A JP 2073892A JP 7389290 A JP7389290 A JP 7389290A JP H03275570 A JPH03275570 A JP H03275570A
- Authority
- JP
- Japan
- Prior art keywords
- ceramics
- oxide
- heating
- induction heating
- cylindrical body
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 63
- 239000000919 ceramic Substances 0.000 title claims abstract description 40
- 230000006698 induction Effects 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 12
- 239000011261 inert gas Substances 0.000 claims abstract description 6
- 230000001590 oxidative effect Effects 0.000 claims description 9
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 7
- 239000011225 non-oxide ceramic Substances 0.000 claims description 6
- 229910052575 non-oxide ceramic Inorganic materials 0.000 claims description 6
- 230000001939 inductive effect Effects 0.000 claims description 4
- 229910052574 oxide ceramic Inorganic materials 0.000 claims description 4
- 239000011224 oxide ceramic Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000007654 immersion Methods 0.000 description 9
- 239000011094 fiberboard Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 229910001873 dinitrogen Inorganic materials 0.000 description 6
- 238000010304 firing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 239000011449 brick Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000004792 oxidative damage Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は非酸化物系、酸化物系またはこれらの混合物系
セラミックスを誘導加熱する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for induction heating non-oxide ceramics, oxide ceramics, or mixtures thereof.
従来、アルミナ・カーボン質の浸漬ノズル等を焼成する
場合には灯油燃焼加熱方式の無酸化雰囲気焼成炉を用い
ている。Conventionally, when firing alumina/carbon immersion nozzles, etc., a kerosene combustion heating type non-oxidizing atmosphere firing furnace has been used.
例えば、第３図に示すように燃焼室３０に灯油、ガス等
の燃料と空気をそれぞれ供給し、酸素を不足気味にして
燃焼させ、この炎を窯３１中に吹き出し、道具煉瓦３２
に載置した浸漬ノズルを焼成する。このときの温度は１
０５０℃程度であり、酸素が不足気味であるためにアル
ミナ・カーボン質の浸漬ノズルであっても酸化させずに
焼結させることができる。For example, as shown in FIG. 3, fuel such as kerosene, gas, etc. and air are supplied to the combustion chamber 30, and the combustion is performed with a slight lack of oxygen.The flame is blown into the kiln 31, and the tool bricks 32 are blown out.
The immersion nozzle placed in the immersion nozzle is fired. The temperature at this time is 1
Since the temperature is approximately 0.050°C and there is a slight lack of oxygen, even an alumina/carbon immersion nozzle can be sintered without oxidation.
しかし、第３図に示したような無酸化雰囲気焼成炉では
、焼成温度は最大でも１１００℃程度であるため焼結が
十分でなく熱間強度が不足するという問題がある。そこ
で、燃料供給量、酸素の供給量を増やして焼成温度を１
１００℃以上に上げようとすると、燃焼の結果生成した
炭酸ガス（Ｃｏ、）或いは水蒸気（Ｈ，Ｏ）と浸漬ノズ
ルの成分であるカーボン（Ｃ）とが反応して一酸化炭素
（Ｃｏ）を生成し、浸漬ノズルの酸化損傷が顕著となっ
て使用困難となってしまうという問題がある。However, in the non-oxidizing atmosphere firing furnace as shown in FIG. 3, the firing temperature is about 1100° C. at maximum, so there is a problem that sintering is insufficient and hot strength is insufficient. Therefore, we increased the fuel supply amount and oxygen supply amount to lower the firing temperature by 1.
If you try to raise the temperature to over 100℃, carbon dioxide (Co) or water vapor (H, O) produced as a result of combustion will react with carbon (C), which is a component of the immersion nozzle, producing carbon monoxide (Co). There is a problem in that the oxidation damage to the submerged nozzle becomes significant, making it difficult to use.
本発明は上記課題を解決するためのもので、非酸化物系
、酸化物系またはこれらの混合物系セラミックスを誘導
加熱することにより、十分に高温状態を達成し、かつ酸
化損傷を防止して焼結させることができるセラミックス
の誘導加熱方法を提供することを目的とする。The present invention is intended to solve the above problems, and by induction heating non-oxide-based, oxide-based, or mixture-based ceramics, it is possible to achieve a sufficiently high temperature state and to prevent oxidative damage and sinter the ceramics. It is an object of the present invention to provide a method for induction heating ceramics that can lead to solidification.
本発明者等は前述した課題を解決すべく種々検討の結果
、非酸化物系、酸化物系またはこれらの混合物系セラミ
ックスに直接渦電流を誘導して、１３００〜１４００℃
に加熱して強固に焼結させる方法を見出した。As a result of various studies to solve the above-mentioned problems, the inventors of the present invention directly induced eddy currents in non-oxide-based, oxide-based, or mixture-based ceramics, and heated the ceramics to 1300 to 1400°C.
We have discovered a method for strongly sintering the material by heating it.
即ち、カーボン、グラファイト、炭化珪素あるいはこれ
らの混合物からなる非酸化物系セラミックスまたは前記
非酸化物の一部を含有するセラミックスの場合、不活性
ガスからなる非酸化雰囲気下において、直接渦電流を誘
導して加熱するか、または導電性容器内に収納して誘導
加熱により予熱して導電性を高めた後、セラミックスに
直接渦電流を誘導して加熱することを特徴とする。That is, in the case of non-oxide ceramics made of carbon, graphite, silicon carbide, or a mixture thereof, or ceramics containing a portion of the above-mentioned non-oxides, eddy currents can be directly induced in a non-oxidation atmosphere made of an inert gas. It is characterized by heating the ceramic by heating it, or storing it in a conductive container and preheating it by induction heating to increase its conductivity, and then heating it by inducing an eddy current directly into the ceramic.
また、酸化物系セラミックスの場合、導電性容器内に収
納して誘導加熱により予熱して導電性を高めた後に、セ
ラミックスに直接渦電流を誘導して加熱することを特徴
とする。In the case of oxide-based ceramics, the ceramics are characterized by being housed in a conductive container and preheated by induction heating to increase conductivity, and then heated by directly inducing eddy currents into the ceramics.
このようにセラミックスを誘導加熱することにより短時
間に高温状態を達威し、酸化損傷を防止して十分に焼結
させることができる。By induction heating ceramics in this way, a high temperature state can be achieved in a short time, oxidation damage can be prevented, and the ceramic can be sufficiently sintered.
本発明の誘導加熱方法は、螺旋状誘導コイルの中に、内
側よりアルミナ質円筒、ジルコニアファイバーボード、
アルミナファイバーボードおよび石英ガラス製円筒から
なる断熱容器内に、非酸化物セラミックスをセットし蓋
を付けた後真空ポンプを作動させて前記容器内の空気を
排出し、容器下部より窒素を供給し充満させる。続いて
誘導コイルに、例えば１．５ ｋｗ／ ｋｇ 、 １３
．５６ＭＨ２の高周波を通電して非酸化物に渦電流を発
生させて誘導加熱する。また、非酸化物を一部含有する
セラミックスの場合は、炭化珪素質筒状体内に収納して
筒状体を誘導加熱して予熱した後、筒状体を取り除いて
セラミックスに直接渦電流を誘導して加熱する。In the induction heating method of the present invention, an alumina cylinder, a zirconia fiber board,
After setting non-oxide ceramics in an insulating container made of an alumina fiberboard and a quartz glass cylinder and attaching a lid, a vacuum pump is activated to exhaust the air inside the container, and nitrogen is supplied from the bottom of the container to fill it. let Subsequently, the induction coil is loaded with e.g. 1.5 kw/kg, 13
．． A high frequency of 56MH2 is applied to generate an eddy current in the non-oxide material, thereby inductively heating it. In addition, in the case of ceramics that partially contain non-oxides, the cylindrical body is placed in a silicon carbide cylindrical body, the cylindrical body is preheated by induction heating, and then the cylindrical body is removed to directly induce eddy currents in the ceramic. and heat.
また酸化物系セラミックスを加熱する場合は、酸化防止
を考慮しなくてもよいので断熱容器内を非酸化雰囲気に
置換せずに、酸化物系セラミックスを炭化珪素質筒状体
内に収納し、筒状体を誘導加熱して予熱してセラミック
スの導電性を高めた後、筒状体を取り除いて前記セラミ
ックスに直接渦電流を誘導して加熱する。Furthermore, when heating oxide-based ceramics, there is no need to consider oxidation prevention, so the oxide-based ceramics are housed in a silicon carbide cylindrical body without replacing the inside of the heat-insulating container with a non-oxidizing atmosphere. After preheating the shaped body by induction heating to increase the conductivity of the ceramic, the cylindrical body is removed and an eddy current is directly induced in the ceramic to heat it.
以下、本発明の詳細な説明する。 The present invention will be explained in detail below.
〔実施例１〕
第１図は、本発明の非酸化物の誘導加熱方法の一実施例
を説明するための図で、第１図（ａ）は縦断面図、第１
図（ｂ）は横断面図である。図中、ｌは誘導加熱装置、
２は加熱コイル、３は被加熱物、４は道具煉瓦、５はア
ルミナ質パイプ、６はジルコニアファイバボード、７は
アルミナファイバボード、８は石英ガラス製パイプ、９
．１Ｏ１１１はアルミナファイバボード、１２．１４は
ダクト、１３．１５はバルブ、１６は放射温度計、１７
はりフタ、１８は加熱室、１９は環状管である。[Example 1] FIG. 1 is a diagram for explaining an example of the method for induction heating a non-oxide material of the present invention, and FIG. 1(a) is a longitudinal cross-sectional view, and FIG.
Figure (b) is a cross-sectional view. In the figure, l is an induction heating device,
2 is a heating coil, 3 is an object to be heated, 4 is a tool brick, 5 is an alumina pipe, 6 is a zirconia fiber board, 7 is an alumina fiber board, 8 is a quartz glass pipe, 9
．． 1O111 is alumina fiber board, 12.14 is duct, 13.15 is valve, 16 is radiation thermometer, 17
18 is a heating chamber, and 19 is an annular tube.
図において、誘導加熱装置ｌは、高周波電力が供給され
る加熱コイル２の内側に断熱材５．６゜７．８が施され
ており、さらに中央部にはりフタ１７のテーブルｌＯ上
に道具煉瓦４を介して、被加熱物であるアルミナ・カー
ボン質タンデイツシュ浸漬ノズル３が載置されている。In the figure, the induction heating device 1 has a heat insulating material 5.6°7.8 on the inside of the heating coil 2 to which high-frequency power is supplied, and a tool brick on the table 10 of the lid 17 in the center. An alumina-carbon tundish immersion nozzle 3, which is an object to be heated, is placed through the nozzle 4.
また、誘導加熱装置ｆｌ頂部のボード９には、排気用の
ダクト１４が設けられ、また誘導加熱装置下部のボード
１１には不活性ガス供給用のダクト１２が設けられてい
る。Further, a duct 14 for exhaust is provided on the board 9 at the top of the induction heating device fl, and a duct 12 for supplying inert gas is provided on the board 11 at the bottom of the induction heating device.
被加熱物がアルミナ・カーボン質タンデイツシュ浸漬ノ
ズル３であるので、まずダク）１４に接続された真空ポ
ンプ（図示せず）を作動させて加熱室１８内の空気を排
出した後、バルブ１５を閉じてバルブ１３を開け、ダク
ト１２に接続された窒素ガス供給源（図示せず）より窒
素ガスのような不活性ガスを供給して加熱室１８内に充
満させる。続いて加熱コイル２に高周波電流を通電して
加熱室１８内の浸漬ノズル３に渦電流を発生させて加熱
する。Since the object to be heated is the alumina/carbon tundish immersion nozzle 3, first the vacuum pump (not shown) connected to the duct 14 is operated to exhaust the air in the heating chamber 18, and then the valve 15 is closed. Then, the valve 13 is opened, and an inert gas such as nitrogen gas is supplied from a nitrogen gas supply source (not shown) connected to the duct 12 to fill the heating chamber 18 . Subsequently, a high frequency current is applied to the heating coil 2 to generate an eddy current in the immersion nozzle 3 in the heating chamber 18 to heat it.
例えば、浸漬ノズル寸法を２００φｘ ５００Ｌ（２２
，５ｋｇ）とし、出カニ １．５ ｋｗ／ ｋｇ 、発
振周波数＝１３゜５６ＭＨ２で約６０分間誘導加熱する
ことにより１３００℃に到達したことを放射温度計１６
で！認した。そして、１３００℃を３０分間保持した後
降温した。加熱中はバルブ１５を開け、窒素ガスを２０
ｊ！／ｍｉｎの割合で供給しながら放出した。なお、降
温を急ぐ場合は窒素供給量を増やせば冷却速度を上げる
こともできる。For example, the immersion nozzle dimensions are 200φ x 500L (22
, 5 kg) and induction heating at 1.5 kw/kg, oscillation frequency = 13° 56 MH2 for about 60 minutes, the radiation thermometer 16 confirmed that the temperature reached 1300°C.
in! Approved. Then, the temperature was lowered after maintaining the temperature at 1300°C for 30 minutes. During heating, open valve 15 and supply 200 ml of nitrogen gas.
j! It was released while being supplied at a rate of /min. Note that if the temperature is to be lowered quickly, the cooling rate can be increased by increasing the amount of nitrogen supplied.
また、４００℃以下ではカーボンは酸化しないので窒素
ガスに代えて空気を使用することもでき、焼結費用を逓
減化することができる。Further, since carbon does not oxidize at temperatures below 400° C., air can be used instead of nitrogen gas, and the sintering cost can be reduced gradually.
〔実施例２〕
第２図は、本発明の非酸化物の誘導加熱方法に係る他の
実施例を示す縦断面図である。[Example 2] FIG. 2 is a longitudinal sectional view showing another example of the method for induction heating of non-oxide materials of the present invention.
本実施例においては、誘導加熱装置１の中央部にはアル
ミナ・カーボン質スライド・プレート３が載置されてい
る。実施例１と同様スライド・プレート３の酸化を防止
すべく加熱室１８内の空気を排出した後、窒素ガスを供
給して加熱室１８内を充満させる。続いて加熱コイル２
に高周波電流を通電して加熱室１８内スライド・プレー
ト３に渦電流を発生させ誘導加熱する。例えば、スライ
ド・プレート寸法を１５０ ｘ２００ ｘ３０（孔径２
０φ）とし、出カニ １，５ ｋｗ／ ｋｇ 、発振周
波数： １３．５６ＭＨ２で約６０分間誘導加熱するこ
とにより、スライド・プレート３は１４００℃に到達し
たことを放射温度計１６で確認した。そして１４００℃
を３０分間保持した後降温した。In this embodiment, an alumina-carbon slide plate 3 is placed in the center of the induction heating device 1. As in the first embodiment, after the air in the heating chamber 18 is exhausted to prevent oxidation of the slide plate 3, nitrogen gas is supplied to fill the heating chamber 18. Next, heating coil 2
A high frequency current is applied to generate an eddy current in the slide plate 3 in the heating chamber 18, thereby inductively heating it. For example, if the slide plate dimensions are 150 x 200 x 30 (hole diameter 2
It was confirmed with the radiation thermometer 16 that the slide plate 3 had reached 1400° C. by induction heating for about 60 minutes at a pressure of 1.5 kw/kg and an oscillation frequency of 13.56 MH2. and 1400℃
After holding for 30 minutes, the temperature was lowered.
〔実施例３〕
実施例１において誘導加熱装置ｌの断熱材５の内側に炭
化珪素質の円筒体を取付けて、その内部に酸化物（アル
ミナ質等）を装入した後、加熱コイル２に通電して前記
円筒体に渦電流を発生させて加熱し、約１２００℃に到
達したらりフタ１７を下降させ該円筒体をすばやく取外
して、再度リフタ１７を上昇させて取付ける。この予熱
により酸化物は導電性を有するので加熱コイル２に通電
して酸化物に渦電流を発生させ加熱すると、約２０分間
で１４００℃到達したことを放射温度計１６で確認した
。[Example 3] In Example 1, a cylindrical body made of silicon carbide was attached to the inside of the heat insulating material 5 of the induction heating device 1, and an oxide (alumina etc.) was charged inside the cylindrical body, and then the heating coil 2 was Electricity is applied to generate an eddy current in the cylindrical body to heat it, and when the temperature reaches about 1200° C., the lid 17 is lowered to quickly remove the cylindrical body, and the lifter 17 is raised again to attach it. Due to this preheating, since the oxide has conductivity, electricity was applied to the heating coil 2 to generate an eddy current in the oxide to heat it, and it was confirmed by the radiation thermometer 16 that the temperature reached 1400° C. in about 20 minutes.
そして、１４００℃を３０分間保持して降温した。この
場合酸化物を加熱するため、非酸化雰囲気を形成する必
要はない。Then, the temperature was lowered by maintaining the temperature at 1400°C for 30 minutes. In this case, since the oxide is heated, there is no need to create a non-oxidizing atmosphere.
なお、非酸化物を一部含有するセラミックスを加熱する
場合も、実施例３の場合と同様に炭化珪素質円筒体内に
収納し、円筒体を誘導加熱することにより予熱した後、
加熱コイル２に通電してセラミックスに渦電流を発生さ
せて加熱すればよい。Note that when heating ceramics partially containing non-oxides, the ceramics are housed in a silicon carbide cylinder as in Example 3, and after preheating the cylinder by induction heating,
The heating coil 2 may be energized to generate an eddy current in the ceramic to heat it.
ただしこの場合は、非酸化雰囲気下において加熱する必
要があり、円筒体の取り外しを素早く行うとともに、非
酸化雰囲気を維持するために、第１図（ロ）に示すよう
にテーブル１０の下降開始とともに環状管１９の複数の
穴から水平方向に窒素ガスを吹きつけてガスカーテンを
形成し、加熱室内と大気とを遮断することが必要である
。However, in this case, it is necessary to heat the cylinder in a non-oxidizing atmosphere, and in order to quickly remove the cylindrical body and maintain the non-oxidizing atmosphere, as shown in FIG. It is necessary to form a gas curtain by blowing nitrogen gas horizontally through a plurality of holes in the annular tube 19 to isolate the inside of the heating chamber from the atmosphere.
以上のように本発明によれば、アルミナ・カーボン質セ
ラミックスのように導電性を有するセラミックスの場合
は、誘導加熱により被加熱物に直接渦電流を発生させて
短時間に高温に加熱することができ、セラミックスを十
分に焼結させることができた。また、酸化物系セラミッ
クスの場合も約１２００℃まで誘導加熱により導電性容
器を加熱して予熱することによりセラミックスの導電性
が増し、その後セラミックスを直接誘導加熱することに
より、十分に焼結することができた。As described above, according to the present invention, in the case of conductive ceramics such as alumina-carbon ceramics, it is possible to directly generate eddy current in the heated object by induction heating and heat it to a high temperature in a short time. The ceramics were successfully sintered. In the case of oxide-based ceramics, the conductivity of the ceramic can be increased by preheating the conductive container by induction heating to approximately 1200°C, and then the ceramic can be sufficiently sintered by direct induction heating. was completed.
第１図は本発明の一実施例に係る酸化物の誘導加熱方法
を説明するための図、第２図は本発明の他の実施例に係
る酸化物の誘導加熱方法を示す図、第３図は従来の無酸
化雰囲気焼成炉を説明する図である。
１・・・誘導加熱装置、２・・・加熱コイル、３・・・
彼加熱物、４・・・道具煉瓦、５・・・アルミナ質パイ
プ、６・・・ジルコニアファイバーボード、７・・・ア
ルミナファイバーボード、８・・・石英ガラス製パイプ
、９．１Ｏ１１１・・・アルミナファイバーボード、１
２．１４・・・ダクト、１３．１５・・・バルブ、１６
・・・放射温度計 １７・・・リフタ、１８・・・加熱
室。FIG. 1 is a diagram for explaining an oxide induction heating method according to one embodiment of the present invention, FIG. 2 is a diagram illustrating an oxide induction heating method according to another embodiment of the present invention, and FIG. The figure is a diagram illustrating a conventional non-oxidizing atmosphere firing furnace. 1... Induction heating device, 2... Heating coil, 3...
Heating material, 4... Tool brick, 5... Alumina pipe, 6... Zirconia fiber board, 7... Alumina fiber board, 8... Quartz glass pipe, 9.1O111... Alumina fiberboard, 1
2.14...Duct, 13.15...Valve, 16
...Radiation thermometer 17...Lifter, 18...Heating chamber.
Claims (3)
酸化物系セラミックスまたは非酸化物を含有するセラミ
ックスに直接渦電流を誘導して加熱することを特徴とす
る非酸化物系セラミックスの誘導加熱方法。(1) Induction heating of non-oxide ceramics, characterized by heating non-oxide ceramics or ceramics containing non-oxides by directly inducing an eddy current in a non-oxidizing atmosphere consisting of an inert gas. Method.
酸化物を一部含有するセラミックスを炭化珪素質筒状体
内に収納し、前記筒状体を誘導加熱することにより前記
セラミックスを予熱した後、前記筒状体を取り除いて前
記セラミックスに直接渦電流を誘導して加熱することを
特徴とする非酸化物系セラミックスの誘導加熱方法。(2) In a non-oxidizing atmosphere consisting of an inert gas, a ceramic partially containing a non-oxide is housed in a silicon carbide cylindrical body, and the ceramic is preheated by induction heating of the cylindrical body. . A method for induction heating non-oxide ceramics, characterized in that the cylindrical body is removed and eddy current is directly induced in the ceramics to heat the ceramics.
納し、前記筒状体を誘導加熱することにより前記酸化物
系セラミックスを予熱した後、前記筒状体を取り除いて
前記セラミックスに直接渦電流を誘導して加熱すること
を特徴とする酸化物系セラミックスの誘導加熱方法。(3) After storing the oxide ceramic in a silicon carbide cylindrical body and preheating the oxide ceramic by induction heating the cylindrical body, the cylindrical body is removed and the ceramic is directly vortexed. An induction heating method for oxide ceramics characterized by heating by inducing an electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2073892A JPH03275570A (en) | 1990-03-23 | 1990-03-23 | Method for heating ceramics by induction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2073892A JPH03275570A (en) | 1990-03-23 | 1990-03-23 | Method for heating ceramics by induction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03275570A true JPH03275570A (en) | 1991-12-06 |
Family
ID=13531312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2073892A Pending JPH03275570A (en) | 1990-03-23 | 1990-03-23 | Method for heating ceramics by induction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03275570A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010056064A (en) * | 2008-08-27 | 2010-03-11 | Korea Atomic Energy Research Inst | High-frequency induction heating device of ceramic material, and nonpressurized sintering method using the same |
| EP2363431A1 (en) | 2010-02-25 | 2011-09-07 | Reagens S.p.A. | Composition comprising alkali metal carboxylates for stabilizing halogen-containing polymers |
-
1990
- 1990-03-23 JP JP2073892A patent/JPH03275570A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010056064A (en) * | 2008-08-27 | 2010-03-11 | Korea Atomic Energy Research Inst | High-frequency induction heating device of ceramic material, and nonpressurized sintering method using the same |
| EP2363431A1 (en) | 2010-02-25 | 2011-09-07 | Reagens S.p.A. | Composition comprising alkali metal carboxylates for stabilizing halogen-containing polymers |
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