JPH0411786B2 - - Google Patents
Info
- Publication number
- JPH0411786B2 JPH0411786B2 JP17319089A JP17319089A JPH0411786B2 JP H0411786 B2 JPH0411786 B2 JP H0411786B2 JP 17319089 A JP17319089 A JP 17319089A JP 17319089 A JP17319089 A JP 17319089A JP H0411786 B2 JPH0411786 B2 JP H0411786B2
- Authority
- JP
- Japan
- Prior art keywords
- atmosphere
- conveyor belt
- atmospheric
- furnace
- heat treatment
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000012298 atmosphere Substances 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 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
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 239000003049 inorganic solvent Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Tunnel Furnaces (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は、処理品を炭素質又は黒鉛質繊維強化
炭素製のコンベアーベルトで搬送して、該処理品
を雰囲気中で高温で加熱する方法に関するもので
ある。本発明はまた、かかる方法に好適に用い得
る装置をも提供するものである。[Detailed description of the invention] (a) Industrial application field The present invention involves transporting a processed product on a conveyor belt made of carbonaceous or graphite fiber-reinforced carbon, and heating the processed product at a high temperature in an atmosphere. It is about the method. The present invention also provides an apparatus that can be suitably used in such a method.
(ロ) 問題点とその解決方法
上記した如き高温雰囲気加熱処理方法とその装
置に用いられるコンベアーベルトは、第１図にお
いて符号５で示されているが、かかるコンベアー
ベルトは通常雰囲気炉を構成する加熱室１や冷却
室２などを通過して処理品を搬送した後、炉外に
出て大気中を通り再び処理品を搬送する。(b) Problems and their solutions The conveyor belt used in the high-temperature atmosphere heat treatment method and apparatus described above is indicated by the reference numeral 5 in FIG. 1, and such a conveyor belt usually constitutes an atmospheric furnace. After passing through the heating chamber 1, cooling chamber 2, etc., and conveying the treated article, it exits the furnace, passes through the atmosphere, and is conveyed again.
ところが、雰囲気炉中の高温に耐え得るように
炭素質又は黒鉛質繊維強化炭素でコンベアーベル
トを作り、これを雰囲気高温熱処理炉中を経て循
環すると、高温には誠に良く耐え得るが、以下に
述べる通りの思わぬ不都合が見出された。 However, if a conveyor belt is made of carbonaceous or graphite fiber-reinforced carbon to withstand the high temperatures in an atmospheric furnace and then circulated through an atmospheric high-temperature heat treatment furnace, it can withstand the high temperatures quite well, but as described below. An unexpected inconvenience was discovered on the street.
このようなコンベアーベルトを構成する炭素材
は20〜30％ほどの気孔率を有するもので、これが
以下の実施例の如くに1000〜3000℃の高温に加熱
されると、その炭素が非常に活性化されて、コン
ベアーベルトが周囲のガスや蒸気を吸着すること
になる。 The carbon material that makes up such conveyor belts has a porosity of about 20 to 30%, and when it is heated to a high temperature of 1000 to 3000 degrees Celsius, as in the example below, the carbon becomes extremely active. This causes the conveyor belt to adsorb surrounding gases and vapors.
即ち、循環するコンベアーベルトは所定の雰囲
気下に保たれた炉外の回路を通るとき、空気中の
酸素や水蒸気又は大気中に混じる無機あるいは有
機の溶剤ガスなどを吸着し、循環して再び炉中に
入ると加熱室で加熱されてコンベアーベルトに吸
着したこれらが燃焼すると共に、コンベアーベル
トから放出された炭酸ガス，一酸化炭素，水素，
窒素その他が処理品と反応して処理品を汚染する
ことになる。 In other words, as the circulating conveyor belt passes through a circuit outside the furnace that is maintained in a predetermined atmosphere, it adsorbs oxygen and water vapor in the air, as well as inorganic and organic solvent gases mixed in the atmosphere, and circulates them back into the furnace. Once inside, they are heated in a heating chamber and these adsorbed on the conveyor belt are burned, and at the same time carbon dioxide, carbon monoxide, hydrogen, and other gases released from the conveyor belt are
Nitrogen and other substances will react with the processed product and contaminate it.
特に、雰囲気熱処理装置がおかれているのと同
じ建物内に処理品の酸洗い場や溶剤による洗浄槽
がおかれている場合には、これらの蒸気をコンベ
アーベルトが吸着しやすくなり、処理品の汚染は
ひどくなる。 In particular, if a pickling place for processed products or a cleaning tank using a solvent is located in the same building as the atmospheric heat treatment equipment, the conveyor belt will easily absorb these vapors, causing damage to the processed products. Pollution will get worse.
ちなみに、工業用人造黒鉛を室温から1800℃ま
で加熱したときに放出されるガス組成は、H2が
16％，Co2：13％，Co：56％，N2：14％等で、
その放出量は約50μl／ｇであり、本発明が解決し
ようとする上述した不都合がこのことからも分る
ものと思う。 By the way, the gas composition released when industrial artificial graphite is heated from room temperature to 1800℃ is H2
16%, Co 2 : 13%, Co: 56%, N 2 : 14%, etc.
The amount released is about 50 .mu.l/g, and this fact seems to explain the above-mentioned disadvantage that the present invention aims to solve.
このような不都合を解決するために、本発明で
は炭素質又は黒鉛質繊維強化炭素からなるコンベ
アーベルトが雰囲気炉外を循環する回路中で不必
要な汚染物質を吸着しないように、雰囲気炉外で
も密閉され不活性ガス雰囲気下に保たれた回路中
を通り得るようにしたものである。 In order to solve these inconveniences, in the present invention, a conveyor belt made of carbonaceous or graphite fiber-reinforced carbon is installed outside the atmosphere furnace so that it does not adsorb unnecessary pollutants in the circuit in which it circulates outside the atmosphere furnace. It is designed to pass through a circuit that is sealed and kept under an inert gas atmosphere.
なお、本発明は炭素質又は黒鉛質繊維強化炭素
で作られたコンベアーベルトが循環して処理品を
搬送することを条件とした雰囲気熱処理方法とそ
の装置についてのものであつて、従来の鋼製のコ
ンベアーベルトを用いた雰囲気熱処理炉とはその
目的と効果を全く異にするものであることを強調
しておく。 The present invention relates to an atmospheric heat treatment method and apparatus in which a conveyor belt made of carbonaceous or graphite fiber-reinforced carbon circulates and conveys the processed product, and the present invention relates to an atmospheric heat treatment method and an apparatus for the same, in which a conveyor belt made of carbonaceous or graphite fiber-reinforced carbon circulates and conveys the treated product. It should be emphasized that the purpose and effects are completely different from the atmospheric heat treatment furnace using a conveyor belt.
(ハ) 実施例
以下、本発明の方法を第１図に示される実施例
を参照して更に説明する。(C) Examples Hereinafter, the method of the present invention will be further explained with reference to an example shown in FIG.
この実施例図は、炭素繊維強化炭素の成形品を
高温で焼成する雰囲気熱処理装置であつて、焼成
すべき処理品８は装置入口部のテーブルに設けら
れたローラー７により矢符方向に移動して、雰囲
気窒素ガスN2による置換室３に送られる。処理
品は引続いて炭素繊維強化炭素製のメツシユベル
トのコンベアーベルト５に乗り、高温加熱室１を
通つて焼成され、冷却室２で冷却された後に熱処
理装置外に送り出される。 This example diagram shows an atmospheric heat treatment apparatus for firing carbon fiber-reinforced carbon molded products at high temperatures, and the processed product 8 to be fired is moved in the direction of the arrow by a roller 7 provided on a table at the entrance of the equipment. Then, it is sent to the replacement chamber 3 with an atmosphere of nitrogen gas N 2 . The treated product is then transferred onto a conveyor belt 5, which is a mesh belt made of carbon fiber reinforced carbon, is fired through a high temperature heating chamber 1, cooled in a cooling chamber 2, and then sent out of the heat treatment apparatus.
上記した焼成されるべき処理品８は、炭素繊維
の布織物を重ねてこれにバインダー樹脂と黒鉛粉
を混合したものを含浸させ、これを加圧下で加熱
成形した板状の不融化処理したものである。 The above-mentioned treated product 8 to be fired is a plate-shaped infusible product obtained by stacking carbon fiber cloth, impregnating it with a mixture of binder resin and graphite powder, and heating and molding it under pressure. It is.
また、上記したコンベアーベルト５は、ピツチ
を含浸させ300℃で不融化処理をなし、その後に
600℃→1000℃を経て2500℃に窒素雰囲気中で加
熱して作られた炭素繊維束からなるものである。 In addition, the above-mentioned conveyor belt 5 is impregnated with pitch and subjected to infusibility treatment at 300°C, and then
It consists of carbon fiber bundles made by heating from 600℃ to 1000℃ and then to 2500℃ in a nitrogen atmosphere.
上述した通り、処理品の成形板は加熱室で昇温
され、連続して炭素化処理又は黒鉛化処理される
もので、該加熱室の温度は炭化処理の場合は1000
〜1300℃、黒鉛化処理の場合は2000〜3000℃とし
た。 As mentioned above, the temperature of the molded plate of the processed product is raised in a heating chamber, and the temperature is continuously carbonized or graphitized.
~1300°C, and 2000~3000°C in the case of graphitization treatment.
雰囲気ガス入口９より送られて加熱室１，冷却
室２、置換室３に入り雰囲気ガス排出口１０より
排気される雰囲気ガスは、2000℃までは窒素ガ
ス、2000℃以上はアルゴンガスを使用した。 The atmospheric gas that is sent from the atmospheric gas inlet 9, enters the heating chamber 1, cooling chamber 2, and replacement chamber 3, and is exhausted from the atmospheric gas exhaust port 10 is nitrogen gas up to 2000°C, and argon gas used above 2000°C. .
処理品の通過時間は６〜12時間とした。 The passage time of the treated product was 6 to 12 hours.
循環するコンベアーベルト５が復路にて通過す
る回路をなすコンベアー駆動部６とコンベアーリ
ターン部１１を大気から閉鎖した保護通路とし、
この中に雰囲気ガス入口９より窒素ガスを送つて
窒素雰囲気下においた。 The conveyor drive section 6 and the conveyor return section 11 forming a circuit through which the circulating conveyor belt 5 passes on the return path are made into a protective passage closed from the atmosphere,
Nitrogen gas was sent into this from the atmospheric gas inlet 9 to create a nitrogen atmosphere.
このようにして、コンベアーベルト５が加熱室
１と冷却室２を通過後に室外に出て空気中を通る
のを防いだ。従つて、コンベアーベルト５が空気
中の酸素，水素その他のガスや蒸気を吸着し、加
熱室１でこれらを放出して、処理品８が酸化又は
汚染するのを防いだ。４は雰囲気を遮断するため
の扉である。 In this way, the conveyor belt 5 is prevented from passing through the heating chamber 1 and the cooling chamber 2 and then going outside into the air. Therefore, the conveyor belt 5 adsorbs oxygen, hydrogen, and other gases and vapors in the air and releases them in the heating chamber 1, thereby preventing the processed product 8 from being oxidized or contaminated. 4 is a door for blocking the atmosphere.
上述のようにして処理された成形板の引つ張り
強度は30〜40Kg／mm2であり、焼成による所期の強
度が得られた。また、かくして得られた成形板に
は上述した原因になる酸化や汚染は認められなか
つた。 The tensile strength of the molded plate treated as described above was 30 to 40 Kg/mm 2 , and the desired strength was obtained by firing. Furthermore, no oxidation or contamination, which could be the cause mentioned above, was found in the thus obtained molded plate.
コンベアーベルト５は上記した高温に耐え、高
温下でも充分な引つ張り強度をもつて長時間の循
環運転をすることができた。 The conveyor belt 5 withstood the above-mentioned high temperatures, had sufficient tensile strength even at high temperatures, and was able to operate in circulation for a long time.
(ニ) 発明の効果
上述した通り、本発明によれば高温下での循環
運転に誠に適した炭素質又は黒鉛質繊維強化炭素
製のコンベアーベルトが、処理品を酸化，汚染す
る等の不都合を生じることなく雰囲気高温熱処理
方法に採用することできる卓越した効果を有する
ものである。(d) Effects of the invention As described above, according to the present invention, a conveyor belt made of carbonaceous or graphite fiber-reinforced carbon, which is truly suitable for circulation operation under high temperatures, can avoid inconveniences such as oxidation and contamination of processed products. It has an outstanding effect that it can be used in an atmospheric high temperature heat treatment method without causing any oxidation.
第１図は本発明の方法を行なうために好適な一
例である連続雰囲気熱処理炉の説明図である。
符号説明 １……加熱室、２……冷却室、３…
…置換室、４……扉、５……コンベアーベルト、
６……コンベアー駆動ドラム、７……送りローラ
ー、８……処理品、９……雰囲気ガス入口、１０
……雰囲気ガス排出口、１１……リターンコンベ
アー保護通路。
FIG. 1 is an explanatory diagram of a continuous atmosphere heat treatment furnace which is a suitable example for carrying out the method of the present invention. Explanation of symbols 1...Heating chamber, 2...Cooling chamber, 3...
...Replacement room, 4...Door, 5...Conveyor belt,
6...Conveyor drive drum, 7...Feed roller, 8...Processed product, 9...Atmospheric gas inlet, 10
...Atmospheric gas outlet, 11...Return conveyor protection passage.
Claims (1)
により処理品を搬送して該処理品を該雰囲気炉中
で雰囲気熱処理する方法において、該コンベアー
ベルトを炭素質又は黒鉛質繊維強化炭素で作り、
該コンベアーベルトの雰囲気炉外の循環回路を上
記した雰囲気炉中の雰囲気と同一の雰囲気下又は
不活性ガス雰囲気下におくことを特徴する雰囲気
熱処理方法。 ２ 処理品を搬送するために雰囲気炉中を経て循
環するコンベアーベルトを有する雰囲気熱処理装
置にであつて、該コンベアーベルトは炭素質又は
黒鉛質繊維強化炭素からなり、かつ該コンベアー
ベルトが循環通過する雰囲気炉外の回路が閉鎖さ
れた空間をなし、この閉鎖された空間が上記した
雰囲気炉中の雰囲気と同一の雰囲気又は不活性ガ
ス雰囲気下におかれていることを特徴とする雰囲
気熱処理装置。[Claims] 1. A method of conveying a treated product by a conveyor belt circulating through an atmospheric furnace and subjecting the treated product to atmospheric heat treatment in the atmospheric furnace, wherein the conveyor belt is made of carbonaceous or graphite fiber-reinforced carbon. Made with
An atmospheric heat treatment method characterized in that the circulation circuit of the conveyor belt outside the atmospheric furnace is placed under the same atmosphere as the atmosphere in the above-mentioned atmospheric furnace or under an inert gas atmosphere. 2. An atmospheric heat treatment apparatus having a conveyor belt that circulates through an atmospheric furnace to convey the treated product, the conveyor belt being made of carbonaceous or graphitic fiber-reinforced carbon, and the conveyor belt circulating through the atmosphere furnace. An atmospheric heat treatment apparatus characterized in that a circuit outside the atmosphere furnace forms a closed space, and this closed space is placed in the same atmosphere as the atmosphere in the above-mentioned atmosphere furnace or under an inert gas atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17319089A JPH0339887A (en) | 1989-07-05 | 1989-07-05 | Atmosphere heat treatment method and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17319089A JPH0339887A (en) | 1989-07-05 | 1989-07-05 | Atmosphere heat treatment method and its device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0339887A JPH0339887A (en) | 1991-02-20 |
| JPH0411786B2 true JPH0411786B2 (en) | 1992-03-02 |
Family
ID=15955765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17319089A Granted JPH0339887A (en) | 1989-07-05 | 1989-07-05 | Atmosphere heat treatment method and its device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0339887A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021039677A1 (en) * | 2019-08-27 | 2021-03-04 | 関東冶金工業株式会社 | Heat treatment furnace |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06347424A (en) * | 1993-06-08 | 1994-12-22 | Hamamatsu Photonics Kk | Soft x-ray nondestructive examination device |
| JP2007127335A (en) * | 2005-11-04 | 2007-05-24 | Sanden Corp | Cooling system |
| KR100947422B1 (en) * | 2007-11-27 | 2010-03-12 | 박상건 | Heat treatment apparatus |
| KR101039128B1 (en) * | 2008-04-29 | 2011-06-07 | 허혁재 | Continuous furnace |
-
1989
- 1989-07-05 JP JP17319089A patent/JPH0339887A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021039677A1 (en) * | 2019-08-27 | 2021-03-04 | 関東冶金工業株式会社 | Heat treatment furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0339887A (en) | 1991-02-20 |
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