JPH0411787B2 - - Google Patents
Info
- Publication number
- JPH0411787B2 JPH0411787B2 JP17319189A JP17319189A JPH0411787B2 JP H0411787 B2 JPH0411787 B2 JP H0411787B2 JP 17319189 A JP17319189 A JP 17319189A JP 17319189 A JP17319189 A JP 17319189A JP H0411787 B2 JPH0411787 B2 JP H0411787B2
- Authority
- JP
- Japan
- Prior art keywords
- conveyor belt
- heat treatment
- atmospheric
- processed products
- atmospheric heat
- 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
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- 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、炭素質又は黒鉛質のコンベアーベル
トを用いた雰囲気加熱処理方法とその装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an atmospheric heat treatment method using a carbonaceous or graphite conveyor belt and an apparatus therefor.
(ロ) 問題点とその解決方法
本発明の好適なる実施例を示す第１図で今まで
の問題点とこの発明による解決方法を説明する
と、この種のコンベアーベルトは熱処理品６を炭
素又は黒鉛繊維強化炭素製のコンベアーベルト３
に積載して不活性ガス雰囲気の加熱室１で高温加
熱焼成し、冷却室２で冷却後に送り出す熱処理装
置において循環使用される。(b) Problems and their solutions The conventional problems and the solutions according to the present invention will be explained with reference to FIG. 1 showing a preferred embodiment of the present invention. Fiber-reinforced carbon conveyor belt 3
The materials are loaded onto a container, heated and fired at high temperatures in a heating chamber 1 in an inert gas atmosphere, cooled in a cooling chamber 2, and sent out for circulation in a heat treatment device.
ところが、一般に炭素又は黒鉛材は20〜30％の
気孔率があつて、空気中からも酸素、水蒸気その
他のガスや蒸気を吸着する。このコンベアーベル
トは循環して加熱室で加熱されると吸着した酸素
と燃焼して消耗し、また吸着物は放出されて処理
品を汚染する問題点がある。 However, carbon or graphite materials generally have a porosity of 20 to 30% and adsorb oxygen, water vapor, and other gases and vapors even from the air. When this conveyor belt circulates and is heated in a heating chamber, it burns with the adsorbed oxygen and is consumed, and the adsorbed substances are released and contaminate the processed products.
本発明は、上記したような吸着物が昇温すると
放出される性質を利用して、コンベアーベルトの
循環回路中の処理品の積載部の直前で該コンベア
ーベルトを加熱して汚染物質を放出除去する雰囲
気熱処理方法と装置を提供するものである。 The present invention takes advantage of the above-mentioned property that adsorbed substances are released when the temperature rises, and heats the conveyor belt just before the loading section of the processed products in the circulation circuit of the conveyor belt to release and remove contaminants. The present invention provides an atmospheric heat treatment method and apparatus.
ちなみに、人造黒鉛は室温から1800℃まで加熱
すると、H2が16％，Co2：13％，CO：56％，
N2：14％からなる組成のガスを放出する。 By the way, when artificial graphite is heated from room temperature to 1800℃, H2 is 16%, Co2 : 13%, CO: 56%,
Releases a gas with a composition of 14% N 2 .
この場合の放出量は約500μl／ｇにも及び、こ
の放出量はほぼ加熱温度に比例する。1800℃では
1000℃のときの約２倍の放出量がある。 In this case, the amount released is as high as about 500 μl/g, and this amount is approximately proportional to the heating temperature. At 1800℃
The amount released is approximately twice that at 1000℃.
本発明に用いられる炭素質又は黒鉛繊維強化炭
製のコンベアーベルトは、その製造に使用される
炭素又は黒鉛質の繊維、これを接着するための樹
脂の種類、加える炭素粉の種類、焼成方法とその
温度などにより、表面の状態や気孔率が異なり、
吸着量に差異が生ずるので、処理品の要求に応じ
た吸着物質除去のためにコンベアーベルトを加熱
する温度を選ぶ必要があることは勿論である。 The conveyor belt made of carbonaceous or graphite fiber-reinforced carbon used in the present invention depends on the carbon or graphite fibers used in its manufacture, the type of resin used to bond it, the type of carbon powder added, and the firing method. The surface condition and porosity vary depending on the temperature, etc.
Since there is a difference in the amount of adsorption, it is of course necessary to select the temperature at which the conveyor belt is heated to remove the adsorbed substances in accordance with the requirements of the product to be treated.
本発明によるコンベアーベルトをなす繊維強化
炭素からなるガス又は蒸気を加熱除去する方法は
簡易で優れた効果を有する方法で、そのための設
備も簡単である長所がある。 The method of heating and removing the gas or steam made of fiber-reinforced carbon constituting the conveyor belt according to the present invention is a simple and highly effective method, and has the advantage that the equipment for the method is simple.
なお、今までに公知の鋼製のコンベアーベルト
を予備加熱する場合等と本発明とはその目的と効
果を全く異にし、それらとは同一視し得ないもの
であることを強調しておく。 It should be emphasized that the purpose and effect of the present invention are completely different from the previously known cases of preheating a steel conveyor belt, and cannot be equated with them.
(ハ) 実施例
以下、本発明の実施例をその方法を達成するめ
に好適な一装置を示す第１図にについて更に説明
する。(C) Embodiments An embodiment of the present invention will now be further described with reference to FIG. 1, which shows one apparatus suitable for accomplishing the method.
この実施例は、ステンレス鋼のニツケルろうに
よるろう付け炉である。 This embodiment is a stainless steel nickel brazing furnace.
組立てられたろう付け処理品６を炭素繊維強化
炭素で製作し、ローラーメツシユベルトコンベア
ー３に積載して、窒素に約３％の水素を混合した
雰囲気ガスの加熱室１で昇温ろう付け後、冷却室
２で冷却の後に取出すものである。 The assembled brazed product 6 is made of carbon fiber-reinforced carbon, loaded onto the roller mesh belt conveyor 3, and brazed at an elevated temperature in the heating chamber 1 with an atmosphere gas containing about 3% hydrogen mixed with nitrogen. It is taken out after being cooled in the cooling chamber 2.
該メツシユベルトコンベアー３は、ピツチを含
浸させ、300℃で不融化処理を行ない、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により構成されたもの
である。また、上記した雰囲気ガスは雰囲気ガス
入口７より炉中に送られ、雰囲気ガス排出口８よ
り排気される。 The mesh belt conveyor 3 is impregnated with pitch, subjected to infusibility treatment at 300°C, and then
It is composed of carbon fiber bundles made by heating from 600℃ to 1000℃ and then to 2500℃ in a nitrogen atmosphere. Further, the above-mentioned atmospheric gas is sent into the furnace through the atmospheric gas inlet 7 and exhausted through the atmospheric gas exhaust port 8.
ろう付加熱室の温度は1150℃、雰囲気ガス量は
30m3／ｈ、加熱時間を20分間とした。 The temperature of the brazing heat chamber is 1150℃, and the amount of atmospheric gas is
The heating time was 30 m 3 /h and 20 minutes.
まず、コンベアーベルト加熱器５を使用しない
でろう付けを実施したところ、雰囲気ガス量３０
m3／ｈではろう付け処理品に縁色酸化膜ができ、
ろう付け不良となつた。 First, when brazing was performed without using the conveyor belt heater 5, the amount of atmospheric gas was 30
At m 3 /h, a fringe color oxide film forms on the brazed product.
The brazing was defective.
雰囲気ガス量を増加しながらテストを繰返し、
約60m3／ｈでろう付けできた。 Repeat the test while increasing the amount of atmospheric gas,
Brazing was possible at approximately 60m 3 /h.
次に、コンベアーベルトの循環復回路上で処理
品がコンベアーベルトに積載される位置の近傍に
設けた加熱器５を運転して、約450℃にコンベア
ーを加熱した後に、このコンベアーに処理品を載
せてろう付けすると、雰囲気ガス30m3／ｈで光輝
状態の良好なろう付けができた。 Next, the heater 5 installed near the position where the processed products are loaded onto the conveyor belt on the circulation circuit of the conveyor belt is operated to heat the conveyor to about 450°C, and then the processed products are loaded onto this conveyor. When it was mounted and brazed, brazing with good brightness was achieved with an atmosphere gas of 30 m 3 /h.
以上のように、加熱器５があらかじめコンベア
ーベルトを加熱して吸着された汚染物質を放出さ
せた後ろう付けを行なうことで、良好な雰囲気が
維持された。 As described above, a good atmosphere was maintained by heating the conveyor belt in advance with the heater 5 to release the adsorbed contaminants and then performing brazing.
(ニ) 発明の効果
上述の如く、本発明によればコンベアーベルト
を加熱することで、吸着汚染物質をコンベアーベ
ルトの繊維強化炭素から放出除去して供給雰囲気
ガスを大きく節減することができ、高温下でも優
れた耐熱性と卓越した抗張力を有する繊維強化炭
素が雰囲気熱処理用のコンベアーベルトにも実用
的に始めて使用できることとなり、その効果は誠
に大きい。(d) Effects of the invention As described above, according to the present invention, by heating the conveyor belt, adsorbed pollutants can be released and removed from the fiber-reinforced carbon of the conveyor belt, and the supply atmosphere gas can be greatly reduced. For the first time, fiber-reinforced carbon, which has excellent heat resistance and excellent tensile strength, can be used practically in conveyor belts for atmospheric heat treatment, and the effects are truly significant.
第１図は本発明の実施例を示す雰囲気熱処理炉
の説明図である。
符号説明 １……加熱室、２……冷却室、３…
…コンベアーベルト、４……コンベアー駆動部、
５……コンベアー加熱器、６……処理品、７……
雰囲気ガス入口、８……雰囲気ガス排出口。
FIG. 1 is an explanatory diagram of an atmospheric heat treatment furnace showing an embodiment of the present invention. Explanation of symbols 1...Heating chamber, 2...Cooling chamber, 3...
...conveyor belt, 4...conveyor drive section,
5...Conveyor heater, 6...Processed product, 7...
Atmospheric gas inlet, 8...Atmospheric gas outlet.
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、
かつ該コンベアーベルトの循環回路で処理品の積
載位置直前において加熱して、該コンベアーベル
トに吸着された酸素、水蒸気、炭酸ガスその他の
処理品を汚染するガス又は蒸気を除去することを
特徴とする雰囲気熱処理方法。 ２ 炭素質又は黒鉛質繊維強化炭素製コンベアー
ベルトを装着した雰囲気熱処理装置であつて、該
コンベアーベルトの循環回路中でかつ処理品の積
載位置に近接したところに該コンベアーベルトを
加熱して該ベルトに吸着された酸素、水蒸気、炭
酸ガスその他の処理品を汚染するガス又は蒸気を
該コンベアーベルトから除去する手段を設けたこ
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
Further, heating is performed in the circulation circuit of the conveyor belt immediately before the loading position of the processed products to remove oxygen, water vapor, carbon dioxide, and other gases or vapors that contaminate the processed products adsorbed on the conveyor belt. Atmospheric heat treatment method. 2. An atmospheric heat treatment device equipped with a conveyor belt made of carbonaceous or graphite fiber-reinforced carbon, which heats the conveyor belt in the circulation circuit of the conveyor belt and near the loading position of the processed products. An atmospheric heat treatment apparatus characterized in that it is provided with means for removing from the conveyor belt oxygen, water vapor, carbon dioxide gas, and other gases or vapors that contaminate the processed products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17319189A JPH0339888A (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 |
|---|---|---|---|
| JP17319189A JPH0339888A (en) | 1989-07-05 | 1989-07-05 | Atmosphere heat treatment method and its device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0339888A JPH0339888A (en) | 1991-02-20 |
| JPH0411787B2 true JPH0411787B2 (en) | 1992-03-02 |
Family
ID=15955784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17319189A Granted JPH0339888A (en) | 1989-07-05 | 1989-07-05 | Atmosphere heat treatment method and its device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0339888A (en) |
Families Citing this family (3)
| 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 |
| JP4569860B2 (en) * | 2004-03-11 | 2010-10-27 | 関東冶金工業株式会社 | Heat brazing method for products containing stainless steel parts |
| DE102013104806A1 (en) | 2013-05-08 | 2014-11-13 | Sandvik Materials Technology Deutschland Gmbh | belt furnace |
-
1989
- 1989-07-05 JP JP17319189A patent/JPH0339888A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0339888A (en) | 1991-02-20 |
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