JPH01193586A - Heat treatment device - Google Patents

Heat treatment device

Info

Publication number
JPH01193586A
JPH01193586A JP1460788A JP1460788A JPH01193586A JP H01193586 A JPH01193586 A JP H01193586A JP 1460788 A JP1460788 A JP 1460788A JP 1460788 A JP1460788 A JP 1460788A JP H01193586 A JPH01193586 A JP H01193586A
Authority
JP
Japan
Prior art keywords
heat treatment
furnace
heated
preheating
gas
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.)
Granted
Application number
JP1460788A
Other languages
Japanese (ja)
Other versions
JPH0670552B2 (en
Inventor
Osamu Takeuchi
修 竹内
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IHI Corp filed Critical IHI Corp
Priority to JP1460788A priority Critical patent/JPH0670552B2/en
Publication of JPH01193586A publication Critical patent/JPH01193586A/en
Publication of JPH0670552B2 publication Critical patent/JPH0670552B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To permit the continuous operations of a preheating furnace and a heat treatment furnace and prevent the length of the preheating furnace from being restricted by the length of a material to be heated, by a method wherein a conveying passage is provided between the heat treatment furnace and the preheating furnace while a gas sealing device, introducing exhaust gas and injecting it, is provided in the conveying passage. CONSTITUTION:A moving roller table 27 is provided in a conveying unit 24 connecting a heat treatment furnace 23 to a preheating furnace 22 while a material 21 to be heated can be transferred continuously together with the moving roller table 27 in the preheating furnace 22 and the heat treatment furnace 23. A gas seal nozzle 38 is provided between neighboring rollers in the conveying unit 24 while the blow-off port of the gas seal nozzle 38 is faced toward the material 21 to be heated from the side of the heat treatment furnace 23 toward the side of the preheating furnace. The exhaust gas flows toward the preheating side along the surface of the material 21 to be heated and perfect seal is effected to prevent the inside of the heat treatment furnace 23 from ambient contamination whereby the continuous operation of the preheating furnace 22 and the heat treatment furnace 23 may be achieved and the preheating effect of the material 21 to be heated may be improved. The exhaust gas is employed for seal gas, therefore, the material 21 to be heated may be heated even in the seal part.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は熱処理装置に係り、特に金属、セラミックス及
びガラス等の被加熱材を雰囲気ガス中で加熱する熱処理
装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a heat treatment apparatus, and more particularly to a heat treatment apparatus for heating materials to be heated, such as metals, ceramics, and glass, in an atmospheric gas.

[従来の技術] 従来、金属、セラミックス及びガラス等の被加熱材を雰
囲気ガス中で加熱する熱処理袋M1は、第3図に示す如
く構成されていた。図示するように、被加熱材を予熱す
る予熱炉2と、予熱された被加熱材を雰囲気ガス中で熱
処理する熱処理炉3とは間隔を隔てて夫々独立して直列
に設けられている。これら予熱炉2及び熱処理炉3内に
は、夫々移動用ローラテーブル4が設けられている。ま
た、これら予熱炉2及び熱処理炉3の間には予熱炉2か
ら熱処理炉3へ被加熱材5を受は渡すための搬送用ロー
ラテーブル6が設けられている。予熱炉ハウジング7と
熱処理炉ハウジング8とには、夫々入口と出口側とに開
閉ゲート9が設けられている。上記熱処理炉3には炉内
に雰囲気ガスを供給するための雰囲気ガス供給管10が
接続されている。更に熱処理炉3内にはバーナによる輻
射加熱を行う輻射管11が備えられている。この輻射管
11にはその排ガスを予熱炉2に供給するための排ガス
供給系12が接続されており、この排ガス供給系12に
は昇圧機13が介設されている。
[Prior Art] Conventionally, a heat treatment bag M1 for heating materials to be heated such as metals, ceramics, and glass in an atmospheric gas has been constructed as shown in FIG. As shown in the figure, a preheating furnace 2 for preheating a material to be heated and a heat treatment furnace 3 for heat-treating the preheated material to be heated in an atmospheric gas are provided independently and in series at intervals. A movable roller table 4 is provided in each of the preheating furnace 2 and the heat treatment furnace 3. Further, a conveying roller table 6 is provided between the preheating furnace 2 and the heat treatment furnace 3 for receiving and transferring the material to be heated 5 from the preheating furnace 2 to the heat treatment furnace 3. The preheating furnace housing 7 and the heat treatment furnace housing 8 are provided with opening/closing gates 9 on the inlet and outlet sides, respectively. An atmospheric gas supply pipe 10 for supplying atmospheric gas into the furnace is connected to the heat treatment furnace 3. Further, the heat treatment furnace 3 is provided with a radiant tube 11 that performs radiant heating using a burner. An exhaust gas supply system 12 for supplying the exhaust gas to the preheating furnace 2 is connected to the radiant pipe 11, and a booster 13 is interposed in the exhaust gas supply system 12.

また、上記予熱炉2には炉内に供給された排ガスを排出
する排ガス煙突14が接続されている。
Furthermore, an exhaust gas chimney 14 is connected to the preheating furnace 2 for discharging the exhaust gas supplied into the furnace.

このように構成された熱処理装置1は、熱処理炉30輻
銅管11の排ガスを排ガス供給系12の昇圧機13によ
り昇圧して、予熱炉2内に供給し、この排ガスで被加熱
材5を予熱する。予熱後、予熱炉2から搬送用ローラテ
ーブル6で、熱処理炉3に受は渡し、この熱処理炉3内
に雰囲気ガス供給管12から雰囲気ガスを吹き込んで輻
射管11で加熱して雰囲気熱処理を行う省エネルギ炉で
あり、特公昭53−29283号公報に報告されている
The heat treatment apparatus 1 configured as described above boosts the pressure of the exhaust gas from the heat treatment furnace 30 and the copper pipe 11 by the booster 13 of the exhaust gas supply system 12, supplies it into the preheating furnace 2, and uses this exhaust gas to heat the material to be heated 5. Preheat. After preheating, the carrier is transferred from the preheating furnace 2 to the heat treatment furnace 3 using the conveying roller table 6, and atmospheric gas is blown into the heat treatment furnace 3 from the atmosphere gas supply pipe 12 and heated by the radiation tube 11 to perform atmospheric heat treatment. It is an energy-saving furnace and is reported in Japanese Patent Publication No. 53-29283.

[発明が解決しようとする課題] ところで、この種の熱処理装置1にあっては次のような
問題点があった。
[Problems to be Solved by the Invention] By the way, this type of heat treatment apparatus 1 has the following problems.

予熱炉2で予熱された被加熱材5は、これを予熱炉2か
ら熱処理炉3に受は渡すための搬出用ローラテーブル6
上で大気にさらされて冷却されるため熱4n失が大きい
という問題があった。
The material 5 to be heated that has been preheated in the preheating furnace 2 is transferred to an unloading roller table 6 for receiving and transferring it from the preheating furnace 2 to the heat treatment furnace 3.
There was a problem that 4n of heat was lost because it was cooled by being exposed to the atmosphere at the top.

また、予熱炉ハウジング7の出口と、熱処理炉ハウジン
グ8の入口とには夫々開閉ゲート9が設けられているが
、被加熱材5が両炉にまたがって通過しているときは開
閉ゲート9を閉成することができないため、熱処理炉3
の雰囲気ガスの流量は開閉ゲート9の開成時に比して5
〜10倍必要であるという問題があった。そのため、連
続操業を行うことが困難であった°。
Further, an opening/closing gate 9 is provided at the outlet of the preheating furnace housing 7 and the inlet of the heat treatment furnace housing 8, respectively. Heat treatment furnace 3 cannot be closed.
The flow rate of the atmospheric gas is 5% compared to when the opening/closing gate 9 is opened.
There was a problem in that it required ~10 times as much. Therefore, it was difficult to carry out continuous operation.

更に、予熱炉2と熱処理炉3とをバッチ的に開閉ゲート
9を閉成して使用するため、予熱炉2は被加熱材5の最
大長さ以上の炉長を必要とし、設備費が過大になるとい
う問題があった。
Furthermore, since the preheating furnace 2 and the heat treatment furnace 3 are used in batches with the opening/closing gate 9 closed, the preheating furnace 2 requires a furnace length longer than the maximum length of the material to be heated 5, resulting in excessive equipment costs. There was a problem with becoming.

上記三つの問題点を改善すべく予熱炉2と熱処理炉3と
を一体的に接続すると、予熱炉2の排ガスが熱処理炉3
内に侵入して炉内雰囲気が汚染され被加熱材5が酸化さ
れてしまうという別の問題があった。
In order to improve the above three problems, if the preheating furnace 2 and the heat treatment furnace 3 are connected integrally, the exhaust gas from the preheating furnace 2 will be transferred to the heat treatment furnace 3.
There was another problem that the heated material 5 would be oxidized by entering the furnace and contaminating the atmosphere inside the furnace.

上述の如き問題点に鑑みて本発明は、予熱炉と熱処理炉
とを一体的に接続しても予熱炉の排ガスにより熱処理炉
の炉内雰囲気が汚染されることなく予熱炉から熱処理炉
まで連続操業を行うことができる熱処理装置を提供する
ことを目的とするものである。
In view of the above-mentioned problems, the present invention provides a continuous connection from the preheating furnace to the heat treatment furnace without contaminating the atmosphere inside the heat treatment furnace with the exhaust gas of the preheating furnace even if the preheating furnace and the heat treatment furnace are connected integrally. The object of the present invention is to provide a heat treatment apparatus that can be operated.

[課題を解決するための手段] 従来技術における問題点を解決すべく本考案は、炉内に
雰囲気ガスを供給すると共に、輻射管で被加熱材を加熱
して雰囲気加熱を行う熱処理炉と、この熱処理炉の輻射
管からの排ガスで熱処理炉に移送される前の被加熱材を
予熱する予熱炉との間にこれらを接続する搬送部を設け
、この搬送部内にこれを通過する被加熱材に熱処理炉側
から予熱炉側に向けて上記輻射管から排ガスを導引して
スリット状に噴出するガスシール装置を備えたものであ
る。
[Means for Solving the Problems] In order to solve the problems in the conventional technology, the present invention provides a heat treatment furnace that supplies atmospheric gas into the furnace and heats the material to be heated with a radiation tube to perform atmospheric heating; A conveyance section is provided between the preheating furnace and the preheating furnace, which preheats the material to be heated before being transferred to the heat treatment furnace using exhaust gas from the radiation pipe of the heat treatment furnace, and the material to be heated passes through this conveyance section. The apparatus is equipped with a gas sealing device that guides exhaust gas from the radiation tube from the heat treatment furnace side toward the preheating furnace side and blows it out in a slit shape.

[作 用] 上述の如く構成され、上記搬送部に備えられたガスシー
ル装置が熱処理炉の輻射管から排ガスを導引して、搬送
部を通過する被加熱材に熱処理炉側から予熱炉側に向け
て噴出するので、排ガスは被加熱材の表面に沿って予熱
側へと流れ、完全シールがなされて熱処理炉内の雰囲気
汚染が防止され、予熱炉と熱処理炉との連続操業が達成
されると共に、被加熱材の予熱効果が向上されるもので
ある。そして、上記シールガスとして排ガスを使用する
・ので被加熱材はシール部でも加熱されることになる。
[Function] The gas seal device configured as described above and provided in the conveyance section guides the exhaust gas from the radiation tube of the heat treatment furnace, and seals the material to be heated passing through the conveyance section from the heat treatment furnace side to the preheating furnace side. Since the exhaust gas flows toward the preheating side along the surface of the material to be heated, a complete seal is created, preventing atmospheric pollution inside the heat treatment furnace, and achieving continuous operation of the preheating furnace and the heat treatment furnace. At the same time, the preheating effect of the heated material is improved. Since exhaust gas is used as the sealing gas, the material to be heated is also heated at the sealing portion.

[実施例] 以下に本発明の熱処理装置の一実施例を添付図面に基づ
いて詳述する。
[Example] An example of the heat treatment apparatus of the present invention will be described below in detail based on the accompanying drawings.

第1図に示す如く、熱処理装置20は主に被加熱材21
を予熱する予熱炉22と、この予熱炉22によって予熱
された被加熱材21を雰囲気ガス中で加熱する熱処理炉
23とから成っている。
As shown in FIG. 1, the heat treatment apparatus 20 mainly consists of
The heat treatment furnace 23 consists of a preheating furnace 22 that preheats the material, and a heat treatment furnace 23 that heats the material 21 to be heated, which has been preheated by the preheating furnace 22, in an atmospheric gas.

上記予熱炉22及び熱処理炉23は被加熱材21の搬送
方向に直列に設けられており、これらの間には搬送部2
4が設けられ、これらを一体的に接続している。すなわ
ち、予熱炉ハウジング25の出口側と熱処理炉ハウジン
グ26の入口側とが、鋼板及び耐火材で接続され、これ
ら鋼板及び耐火材で区画された部分が搬送部24となっ
ている。
The preheating furnace 22 and the heat treatment furnace 23 are provided in series in the conveying direction of the material to be heated 21, and a conveying section 2 is provided between them.
4 are provided and are integrally connected. That is, the outlet side of the preheating furnace housing 25 and the inlet side of the heat treatment furnace housing 26 are connected by a steel plate and a refractory material, and the portion partitioned by these steel plates and the refractory material serves as the conveyance section 24.

これら予熱炉22及び熱処理炉23内には、夫々炉内で
被加熱材21を移動させるための移動用ローラテーブル
27が設けられている。また、熱処理炉23には炉内に
例えばN2ガス、 Arガス及びHNXガス等の不活性
な雰囲気ガスを吹き込むための雰囲気ガス供給管28が
第1の開閉弁29を介して接続されている。更に熱処理
炉23内の上下には被加熱材21を上記雰囲気ガス中で
バーナによる輻射加熱を行うための輻射管30が設けら
れている。輻射管30は被加熱材21の幅方向に延出さ
れ、被加熱材21の長手方向に沿って複数本並列に設け
られている。これら複数本の輻射管30は排ガスヘッダ
31によって連通され、このヘッダ31には輻射管30
がら予熱炉22に排ガスを供給するための排ガス供給系
32が接続されている。この排ガス供給系32には高温
送風機33が介設され、その先端部は二叉に分かれて夫
々第2及び第3の開閉弁34−.35を介して予熱炉2
2内の上下に設けられた排ガス噴出ノズル36に接続さ
れている。この排ガス噴出ノズル36は被加熱材21の
長手方向に沿って複数の噴出口を有しており、被加熱材
21の上下からこれに噴出口を臨ませている。そして1
.F配子熱炉22には予熱炉22内に供給された排ガス
を排出するための排ガス煙突37が配管接続されている
A moving roller table 27 is provided in each of the preheating furnace 22 and the heat treatment furnace 23 to move the material to be heated 21 within the furnace. Further, an atmospheric gas supply pipe 28 for blowing an inert atmospheric gas such as N2 gas, Ar gas, HNX gas, etc. into the furnace is connected to the heat treatment furnace 23 via a first on-off valve 29. Furthermore, radiant tubes 30 are provided above and below inside the heat treatment furnace 23 for radiant heating the material to be heated 21 by a burner in the above-mentioned atmospheric gas. The radiation tubes 30 extend in the width direction of the heated material 21, and are provided in plural in parallel along the longitudinal direction of the heated material 21. These plurality of radiant pipes 30 are communicated with each other by an exhaust gas header 31, and this header 31 includes the radiant pipes 30.
An exhaust gas supply system 32 for supplying exhaust gas to the preheating furnace 22 is connected. A high-temperature blower 33 is interposed in the exhaust gas supply system 32, and its tip is divided into two prongs and has second and third on-off valves 34--, respectively. Preheating furnace 2 via 35
It is connected to exhaust gas jetting nozzles 36 provided above and below inside the exhaust gas nozzle 2. This exhaust gas ejection nozzle 36 has a plurality of ejection ports along the longitudinal direction of the material to be heated 21, and the ejection ports are exposed to the material to be heated 21 from above and below. and 1
.. An exhaust gas chimney 37 for discharging the exhaust gas supplied into the preheating furnace 22 is connected to the F-wire thermal furnace 22 via piping.

また、上記熱処理炉23と予熱炉22とを接続する搬送
部24内にも移動用ローラテーブル27が設けられてお
り、予熱炉22及び熱処理炉23内に夫々設けられた移
動用ローラテーブル27と共に、被加熱材21を連続移
送できるように設けられている。すなわち、予熱炉22
から搬送部24を介して熱処理炉23まで、これらの長
手方向に沿って移動用ローラテーブル27のローラが等
間隔で並列に設けられている。この搬送部24に位置さ
れた相隣接するローラの間にはガスシールノズル38が
設けられている。このガスシールノズル38は第2図に
示す如く、搬送部24内の上下に配置され、この搬送部
24に位置されたローラ上を通過する被加熱材21に熱
処理炉23側から予熱炉22側に向けてその吹き出し口
を臨ませている。具体的には、ガスシールノズル38の
吹き出し口の吹き出し角度αは被加熱材21の上下表面
に対して夫々α−5°〜45°となるように設けられて
いる。このガスシールノズル38は被加熱材21の幅方
向にスリット状の連続した開口となっており、ノズルヘ
ッダ39に連通されている。このノズルヘッダ3つは上
記排ガス供給系32の高温送風機33の下流側から分岐
された排ガス導入系40に接続されている。この排ガス
導入系40は二叉に分かれて夫々第4及び第5の開閉弁
41.42を介して上下のガスシールノズル38のノズ
ルヘッダ39に接続されている。これらガスシールノズ
ル38、ノズルヘッダ39、第4及び第5の開閉弁41
.42及び排気ガス導入系40はガスシール装置43を
構成している。これらガスシールノズル38よりも予熱
炉22側に位置された1〜5本程度のローラは、ガスシ
ールノズル38から吹き出された排ガスの流れを妨げな
いようローラ表面に流れ方向に沿って溝加工が施された
溝付ローラ44として形成されている。
Further, a moving roller table 27 is also provided in the conveying section 24 that connects the heat treatment furnace 23 and the preheating furnace 22, and together with the moving roller tables 27 provided in the preheating furnace 22 and the heat treatment furnace 23, respectively. , are provided so that the material to be heated 21 can be continuously transferred. That is, the preheating furnace 22
Rollers of a moving roller table 27 are provided in parallel at equal intervals along the longitudinal direction from the transfer section 24 to the heat treatment furnace 23. A gas seal nozzle 38 is provided between adjacent rollers located in the conveying section 24. As shown in FIG. 2, the gas seal nozzles 38 are arranged above and below within the conveyance section 24, and are applied to the material to be heated 21 passing over the rollers placed in the conveyance section 24 from the heat treatment furnace 23 side to the preheating furnace 22 side. The air outlet is facing towards the sky. Specifically, the blowing angle α of the blowing port of the gas seal nozzle 38 is set to be α-5° to 45° with respect to the upper and lower surfaces of the material to be heated 21, respectively. This gas seal nozzle 38 has a continuous slit-like opening in the width direction of the heated material 21 and communicates with a nozzle header 39 . These three nozzle headers are connected to an exhaust gas introduction system 40 branched from the downstream side of the high temperature blower 33 of the exhaust gas supply system 32. This exhaust gas introduction system 40 is divided into two parts and connected to the nozzle headers 39 of the upper and lower gas seal nozzles 38 via fourth and fifth on-off valves 41 and 42, respectively. These gas seal nozzles 38, nozzle headers 39, fourth and fifth on-off valves 41
.. 42 and the exhaust gas introduction system 40 constitute a gas seal device 43. Approximately 1 to 5 rollers located closer to the preheating furnace 22 than the gas seal nozzle 38 are grooved along the flow direction on the roller surface so as not to obstruct the flow of the exhaust gas blown out from the gas seal nozzle 38. It is formed as a grooved roller 44.

この溝付ローラ44の本数はガスシールノズル38から
吹き出される排ガス量に応じて設定する。
The number of grooved rollers 44 is set depending on the amount of exhaust gas blown out from the gas seal nozzle 38.

更に、搬送部24内の上部のガスシールノズル38より
も熱処理炉23側には、金網等によって形成されたシー
ルカーテン45が垂下されている。
Furthermore, a seal curtain 45 formed of a wire mesh or the like is suspended closer to the heat treatment furnace 23 than the upper gas seal nozzle 38 in the conveyance section 24 .

本実施例にあっては、シールカーテン45は二重に設け
られている。そして、上記予熱炉ハウジング25の入口
部、搬送部24のシールカーテン45よりも熱処理炉2
3側及び熱処理炉ハウジング26の出口部手前には、夫
々開閉ゲート46が設けられている。
In this embodiment, the seal curtain 45 is provided in duplicate. The heat treatment furnace 2
Opening/closing gates 46 are provided on the third side and in front of the outlet of the heat treatment furnace housing 26, respectively.

次に上記実施例における作用を述べる。Next, the operation of the above embodiment will be described.

熱処理炉23はバーナで輻射加熱を行う輻射管30によ
り加熱される。この加熱の際、炉内へは雰囲気ガス供給
管28より例えばN2ガス、 Arガス及びII N 
Xガス等の雰囲気ガスが供給され、熱処理炉23内で被
加熱材21は雰囲気加熱されることになる。雰囲気ガス
りは第1の開閉弁29で調I′Iされる。熱処理炉23
内での被加熱材21の搬送は移動用ローラ27によって
行われる。上記輻射管3oの排ガスは排ガスヘッダ31
に集合され、排ガス供給系32の高温送風機33で昇圧
され、予熱炉22内の排ガス噴出ノズル36から噴出さ
れる。排ガス噴出ノズル36から噴出される排ガス口は
第2及び第3の開閉弁34.35によって調節され、噴
出された排ガスは被加熱材21を予熱する。そして、予
熱炉22内の排ガスは排ガス煙突37から排出される。
The heat treatment furnace 23 is heated by a radiant tube 30 that performs radiant heating with a burner. During this heating, for example, N2 gas, Ar gas, and II N gas are supplied into the furnace from the atmospheric gas supply pipe 28.
An atmospheric gas such as X gas is supplied, and the material to be heated 21 is atmospherically heated in the heat treatment furnace 23 . The atmospheric gas is regulated by the first on-off valve 29. Heat treatment furnace 23
The material to be heated 21 is conveyed within the chamber by means of moving rollers 27. The exhaust gas from the radiation pipe 3o is transferred to the exhaust gas header 31.
The exhaust gas is collected in the exhaust gas supply system 32, is pressurized by the high-temperature blower 33, and is ejected from the exhaust gas injection nozzle 36 in the preheating furnace 22. The exhaust gas port ejected from the exhaust gas ejection nozzle 36 is regulated by the second and third on-off valves 34,35, and the ejected exhaust gas preheats the material to be heated 21. Then, the exhaust gas in the preheating furnace 22 is discharged from the exhaust gas chimney 37.

予熱炉22内での被加熱材21の搬送は熱処理炉23と
同様に移動用ローラ27によって行われる。これら熱処
理炉23及び予熱炉22は鋼板及び耐火材によって区画
された搬送81124によって接続され、この搬送部2
4内には被加熱材21に熱処理炉23側から予熱炉22
側に向けて排ガスを吹き出すガスシールノズル38が設
けられている。このガスシールノズル38の吹き出し口
はスリット状の開口を有し、被加熱材21の上下表面に
対して吹き出し角度α=5°〜45°を有している。吹
き出し角度αが5″′よりも小さいと、ガスシールノズ
ル38の先端部は被加熱材21と例えば10am以下と
なるように接近し、被加熱材21と接触してノズルが破
損したり、被加熱材21の表面にキズを付けたりする。
The material to be heated 21 is transported within the preheating furnace 22 by means of moving rollers 27 similarly to the heat treatment furnace 23 . These heat treatment furnace 23 and preheating furnace 22 are connected by a conveyor 81124 partitioned by steel plates and refractory materials, and this conveyor section 2
4, a preheating furnace 22 is connected to the material to be heated 21 from the heat treatment furnace 23 side.
A gas seal nozzle 38 is provided to blow out exhaust gas toward the side. The blowout port of this gas seal nozzle 38 has a slit-shaped opening, and has a blowout angle α=5° to 45° with respect to the upper and lower surfaces of the material to be heated 21 . If the blowing angle α is smaller than 5'', the tip of the gas seal nozzle 38 will approach the heated material 21 at a distance of, for example, 10 am or less, and may come into contact with the heated material 21 and damage the nozzle or damage the heated material 21. This may cause scratches on the surface of the heating material 21.

また、吹き出し角度αが45°よりも大きいと、吹き出
し口から吹き出された排ガスは被加熱材21の表面で大
ぎく反射するためシール効果が低下すると共に、ガスの
一部は熱処理炉23内に吹き込まれて炉内を汚染する。
Furthermore, if the blowing angle α is larger than 45°, the exhaust gas blown out from the blowing port will be largely reflected on the surface of the heated material 21, reducing the sealing effect, and a portion of the gas will not flow into the heat treatment furnace 23. It is blown in and contaminates the inside of the furnace.

吹き出し角度αを5°〜45°に設定すると、吹き出し
口から吹き出された排ガスは被加熱材21の表面に沿っ
て予熱炉22に流れる。上述したように、ガスシールノ
ズル38よりも予熱炉22側に位置された1〜5木程度
のローラは1コ一ラ表面に流れ方向に沿って溝加工が施
され溝付ロー544として形成さ”れているので、ガス
シールノズル38から吹き出された排ガスの流れを妨げ
ることなくシール効果を悲化させない。上記ガスシール
ノズル38はノズルヘッダ31、第4及び第5の開閉弁
41.42及び排ガス導入系40と共にガスシール装置
43を構成している。この排ガス導入系40が排ガス供
給系32に接続されているので、輻射管3oの排ガスを
高温送風機33で高温・高圧の排ガスにして排ガス導入
系40を介してガスシールノズル38から吹き出すこと
になる。このガスシールノズル38から吹き出す排ガス
口は上記第4及び第5の開閉弁41.42で調節される
。この高温・高圧の排ガスにより被加熱材21はガスシ
ールされるだけでなく予熱されることになる。ガスシー
ルノズル38は被加熱材21の幅方向にスリット状に全
幅開口となっているため被加熱材21の幅が変化しても
シール効果は変化せず予熱炉22と熱処理炉23との炉
内雰囲気を完全に区分するものである。
When the blowing angle α is set to 5° to 45°, the exhaust gas blown from the blowing port flows into the preheating furnace 22 along the surface of the material to be heated 21 . As described above, the rollers of about 1 to 5 pieces located closer to the preheating furnace 22 than the gas seal nozzle 38 are grooved along the flow direction on the surface of each roller to form the grooved row 544. The gas seal nozzle 38 has a nozzle header 31, fourth and fifth on-off valves 41, 42, and A gas seal device 43 is configured together with the exhaust gas introduction system 40. Since the exhaust gas introduction system 40 is connected to the exhaust gas supply system 32, the exhaust gas in the radiant pipe 3o is converted into high temperature and high pressure exhaust gas by the high temperature blower 33, and the exhaust gas is converted into high temperature and high pressure exhaust gas. The gas is blown out from the gas seal nozzle 38 via the introduction system 40.The exhaust gas port blown out from the gas seal nozzle 38 is adjusted by the fourth and fifth on-off valves 41 and 42.This high-temperature and high-pressure exhaust gas The material to be heated 21 is not only gas-sealed but also preheated.The gas seal nozzle 38 has a full-width opening in the shape of a slit in the width direction of the material to be heated 21, so the width of the material to be heated 21 changes. However, the sealing effect remains unchanged, and the atmosphere inside the preheating furnace 22 and the heat treatment furnace 23 is completely separated.

尚、下部のガスシールノズル38の熱処理炉23側には
ローラが位置されているため、本実施例にあっては上部
のガスシールノズル38の熱処理炉23側にはシールカ
ーテン45を設けている。
Note that since a roller is located on the heat treatment furnace 23 side of the lower gas seal nozzle 38, in this embodiment, a seal curtain 45 is provided on the heat treatment furnace 23 side of the upper gas seal nozzle 38. .

これによりガスシールノズル38より熱処理炉23側の
上下の断面積の差が小さくなるため、流れ抵抗がより均
一化してシール効果が向上するものである。
This reduces the difference in cross-sectional area between the upper and lower sides of the heat treatment furnace 23 side from the gas seal nozzle 38, thereby making the flow resistance more uniform and improving the sealing effect.

更に、被加熱材21がガスシール部に無い時にはガスシ
ール装置43を停止して、搬送部24に設けられた開閉
ゲート46を閉成することができる。
Further, when the material to be heated 21 is not present in the gas seal section, the gas seal device 43 can be stopped and the opening/closing gate 46 provided in the transport section 24 can be closed.

また更に、この搬送部24は鋼板及び耐火材によって区
画されているため、予熱された被加熱材21の冷却が防
止されるものである。この搬送部24での被加熱材21
の搬送は予熱炉22及び熱処理炉23と同様に移動用ロ
ーラテーブル27によってなされるものである。
Furthermore, since the conveying section 24 is partitioned by steel plates and fireproof materials, the preheated material 21 to be heated is prevented from being cooled. The material to be heated 21 in this conveyance section 24
The conveyance is performed by a moving roller table 27 similarly to the preheating furnace 22 and the heat treatment furnace 23.

[弁用の効果] 以上型するに本発明によれば次の如き優れた効果を発揮
する。
[Effects for valves] To summarize, the present invention exhibits the following excellent effects.

(1)  熱処理炉と予熱炉との間にこれらを接続する
搬送部が設けられ、この搬送部内にこれを通過する被加
熱材に熱処理炉側がら予熱炉側に向【ブて熱処理炉を輻
射管から排ガスを導引して噴出するガスシール装置を備
えたので、予熱炉と熱処理炉との連続操業ができるため
、予熱炉の炉長が被加熱材の長さに制約されることがな
く、自由にか長を設計することができる。
(1) A conveying section is provided between the heat treatment furnace and the preheating furnace to connect them, and the material to be heated passing through the conveyance section is provided with radiation from the heat treatment furnace side to the preheating furnace side. Equipped with a gas seal device that guides exhaust gas from the pipe and blows it out, the preheating furnace and heat treatment furnace can be operated continuously, so the length of the preheating furnace is not restricted by the length of the material to be heated. , you can freely design the length.

(b ガスシール装置のシールガスに排ガスを使用する
ため、被加熱材をシール部でも加熱することができる。
(b) Since exhaust gas is used as the sealing gas of the gas sealing device, the material to be heated can also be heated at the sealing part.

(3)  ガスシール装置から被加熱材に排ガスを熱処
理炉側から予熱炉側に向けて噴出するため、排ガスは被
加熱材の表面に予熱炉側へと流れ、完全シールができる
と共に予熱効果も大きい。
(3) Since exhaust gas is ejected from the gas sealing device to the material to be heated from the heat treatment furnace side to the preheating furnace side, the exhaust gas flows onto the surface of the material to be heated toward the preheating furnace side, creating a complete seal and improving the preheating effect. big.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の熱処理装置の一実施例を示す概略図、
第2図は第1図の要部拡大図、第3図は従来の熱処理装
置を示す概略図である。 図中、20は熱処理装置、21は被加熱材、22は予熱
炉、23は熱処理炉、24は搬送部、30は輻射管、4
3はガスシール装置である。 特 許 出 願 人  石川島播磨重工業株式会社代理
人弁理士 紹  谷  信  雄 第3図
FIG. 1 is a schematic diagram showing an embodiment of the heat treatment apparatus of the present invention;
FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. 3 is a schematic diagram showing a conventional heat treatment apparatus. In the figure, 20 is a heat treatment device, 21 is a material to be heated, 22 is a preheating furnace, 23 is a heat treatment furnace, 24 is a conveying section, 30 is a radiation tube, 4
3 is a gas seal device. Patent Applicant: Ishikawajima Harima Heavy Industries Co., Ltd. Representative Patent Attorney Nobuo Sho Tani Figure 3

Claims (1)

【特許請求の範囲】[Claims] 1、炉内に雰囲気ガスを供給すると共に、輻射管で被加
熱材を加熱して雰囲気加熱を行う熱処理炉と、該熱処理
炉の輻射管からの排ガスで熱処理炉に移送される前の被
加熱材を予熱する予熱炉との間にこれらを接続する搬送
部を設け、該搬送部内にこれを通過する被加熱材に熱処
理炉側から予熱炉側に向けて上記輻射管から排ガスを導
引してスリット状に噴出するガスシール装置を備えたこ
とを特徴とする熱処理装置。
1. A heat treatment furnace that supplies atmospheric gas into the furnace and heats the material to be heated with a radiation tube to perform atmospheric heating, and a material to be heated before being transferred to the heat treatment furnace using exhaust gas from the radiation tube of the heat treatment furnace. A conveyance section connecting these is provided between the preheating furnace for preheating the material, and exhaust gas is guided from the radiant pipe to the material to be heated passing through the conveyance section from the heat treatment furnace side to the preheating furnace side. A heat treatment apparatus characterized by comprising a gas sealing device that ejects gas in a slit shape.
JP1460788A 1988-01-27 1988-01-27 Heat treatment equipment Expired - Lifetime JPH0670552B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1460788A JPH0670552B2 (en) 1988-01-27 1988-01-27 Heat treatment equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1460788A JPH0670552B2 (en) 1988-01-27 1988-01-27 Heat treatment equipment

Publications (2)

Publication Number Publication Date
JPH01193586A true JPH01193586A (en) 1989-08-03
JPH0670552B2 JPH0670552B2 (en) 1994-09-07

Family

ID=11865889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1460788A Expired - Lifetime JPH0670552B2 (en) 1988-01-27 1988-01-27 Heat treatment equipment

Country Status (1)

Country Link
JP (1) JPH0670552B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0389390U (en) * 1989-12-28 1991-09-11
JP2014006019A (en) * 2012-06-26 2014-01-16 Hitachi Powdered Metals Co Ltd Continuous sintering furnace and operating method of continuous sintering furnace
JP2022042560A (en) * 2020-09-03 2022-03-15 株式会社ノリタケカンパニーリミテド Heat treatment furnace and method for producing inorganic material using heat treatment furnace

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0389390U (en) * 1989-12-28 1991-09-11
JP2014006019A (en) * 2012-06-26 2014-01-16 Hitachi Powdered Metals Co Ltd Continuous sintering furnace and operating method of continuous sintering furnace
JP2022042560A (en) * 2020-09-03 2022-03-15 株式会社ノリタケカンパニーリミテド Heat treatment furnace and method for producing inorganic material using heat treatment furnace

Also Published As

Publication number Publication date
JPH0670552B2 (en) 1994-09-07

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