JPS59100267A - Continuous heat treatment device - Google Patents
Continuous heat treatment deviceInfo
- Publication number
- JPS59100267A JPS59100267A JP20959782A JP20959782A JPS59100267A JP S59100267 A JPS59100267 A JP S59100267A JP 20959782 A JP20959782 A JP 20959782A JP 20959782 A JP20959782 A JP 20959782A JP S59100267 A JPS59100267 A JP S59100267A
- Authority
- JP
- Japan
- Prior art keywords
- retort
- rotary
- heater
- rotary retort
- heat insulating
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、主としてガス浸炭焼入処理作業に使用される
連続式の熱処理装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous heat treatment apparatus mainly used for gas carburizing and quenching operations.
従来、この種の熱処理装置として、断熱壁により構成し
た炉体内に、円筒状で内周面に螺旋形の搬送リブを有し
た回連レトルトを配設した型式のものがある。すなわち
、このものは、前記回転レトルトの外周囲に該レトルト
内を加熱するためのヒータを配置するとともに、該回転
レトルト内に浸炭用のエンリッチガスや外気排除用のキ
ャリアガスを導入することによって浸炭雰囲気を形成し
ておき、前記回転レトルトの一端部から該回転しトルト
内に導入した被処理物を前記搬送リブにより移送しなが
ら該被処理物に浸炭処理を施すとともに、浸炭を終え前
記回転レトルトの他端部に到達した被処理部を順次、焼
入槽内に投入し得るようになっている。Conventionally, as this type of heat treatment apparatus, there is a type in which a cylindrical retort having a spiral conveying rib on the inner circumferential surface is disposed in a furnace body constituted by a heat insulating wall. That is, in this device, a heater for heating the inside of the rotary retort is arranged around the outer circumference of the rotary retort, and an enrich gas for carburizing and a carrier gas for removing outside air are introduced into the rotary retort. An atmosphere is formed, and the workpiece introduced into the rotating tort from one end of the rotary retort is transferred by the conveying ribs while carburizing the workpiece. The parts to be treated that have reached the other end can be sequentially placed into the quenching tank.
しかして、このような構成のものでは、回転レトルトの
内、外が、前記被処理物を焼入槽内に投入するための開
口部等を介して連涌状態になっているため、浸炭雰囲気
ガスが直接ヒータにも触れることになり、該ヒータの寿
命が短くなるという問題がある。また、回転しトルトの
内外が連通していると、耐熱レンガ等により作られた断
熱壁内に含まれる空気がすべて雰囲気ガスと置き換えら
れてしまうまでは、前記空気が回転レトルト内に侵入す
るおそれがあるため、浸炭を開始することができない。However, in such a structure, the inside and outside of the rotary retort are in a continuous state through an opening for introducing the workpiece into the quenching tank, so the carburizing atmosphere is There is a problem that the gas also comes into direct contact with the heater, which shortens the life of the heater. Additionally, if the inside and outside of the rotating retort are connected, there is a risk that the air will enter the rotating retort until all the air contained within the insulating walls made of heat-resistant bricks is replaced with atmospheric gas. Because of this, carburizing cannot be started.
そのため、運転準備に時間がかかるという不都合がある
。さらに、このようなものであれば、ヒータのリード線
挿通孔等を通して炉内に漏入した空気が回転レトルト内
にも侵入して浸炭雰囲気を乱すおそれもある。したがっ
て、かかる不都合を防ぐために多量のキャリアガスを回
転レトルト内に導入する必要が生じるという問題もある
。Therefore, there is an inconvenience that it takes time to prepare for operation. Furthermore, with such a device, there is a risk that air leaking into the furnace through the lead wire insertion hole of the heater or the like may also enter the rotary retort and disturb the carburizing atmosphere. Therefore, there is also the problem that it is necessary to introduce a large amount of carrier gas into the rotating retort in order to prevent such inconveniences.
本年明は、このような事情に着目してなされたもので、
回転レトルトの外周囲に固定レトルトを設け、この固定
レトルトによって前記回転レトルト内の浸炭雰囲気を断
熱壁およびヒータから隔離することによって、前述した
不都合をことごとく解消することができるようにした連
続式熱処理装置を提供するものである。This year, we focused on these circumstances, and
A continuous heat treatment apparatus in which a fixed retort is provided around the outer periphery of the rotating retort, and the fixed retort isolates the carburizing atmosphere within the rotating retort from the heat insulating wall and the heater, thereby eliminating all of the above-mentioned disadvantages. It provides:
以下、本発明の一実施例を図面を参照して説明する。Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
図面は本発明に係る熱部理装置を概略的に示す断面図で
ある。この図面に示されているように本装置は、断熱壁
１により構成された炉体２内に回転レトルト３を配設す
るとともに、この回転レトルト８の外周面と前記断熱壁
１の内面との間にヒータ４・・・を配設したもので、前
記回転レトルト３内に形成した浸炭雰囲気ａ中で被処理
物ｂ・・・に順次浸炭処理を施し得るようになっている
。炉体２は、両端に開口部２ａ、２ｂを有した筒状のも
ので、それら各開口部２ａ、２ｂには、外方端にフラン
ジ５ａ、６ａを有した蓋体５、６がそれぞれ蓋着してる
。、また、回転レトルト８は、内周に螺旋状の搬送リブ
３ａを有した円筒体状のもので、その一端部３ｂを軸受
７、７に枢支された対をなすローラ８．８により回転可
能に支持させている。また、この回転レトルト３の他端
部３ｃは蓋体６の中心部を貫通させて外部に突出させて
あり、その突出端部をローラ９．９により回転可能に支
持させている。そして、この回転レトルト３の突出端外
周にスプロケット１１を固着し、このスプロケット１１
に原動装置１２からの動力をチェーン１３を介しで伝達
することによって該回転レトルト３を回転駆動するよう
にしている。またこの回転レトルト３の一端部には、被
処理物ｂを該回転レトルト３内に導入するためのシュー
タ１４の先端部が蓋体５を気密に貫通させて挿入してあ
るとともに、他端部には、ガス導入管１６の先端部が栓
部伺１７を気密に貫通させて挿入してある。The drawing is a sectional view schematically showing a thermal processing device according to the present invention. As shown in this drawing, this device includes a rotary retort 3 disposed within a furnace body 2 constituted by a heat insulating wall 1, and a connection between the outer circumferential surface of the rotary retort 8 and the inner surface of the heat insulating wall 1. A heater 4... is disposed between them, so that the workpieces b... can be sequentially carburized in the carburizing atmosphere a formed in the rotary retort 3. The furnace body 2 has a cylindrical shape with openings 2a and 2b at both ends, and lids 5 and 6 having flanges 5a and 6a at the outer ends respectively cover the openings 2a and 2b. I'm wearing it. Further, the rotary retort 8 is a cylindrical body having a spiral conveying rib 3a on the inner circumference, and one end portion 3b of the rotary retort 8 is rotated by a pair of rollers 8.8 pivotally supported by bearings 7, 7. It is supported as much as possible. The other end 3c of the rotary retort 3 penetrates the center of the lid 6 and projects to the outside, and the projecting end is rotatably supported by rollers 9.9. Then, a sprocket 11 is fixed to the outer periphery of the protruding end of the rotating retort 3.
The rotary retort 3 is driven to rotate by transmitting power from the prime mover 12 to the rotary retort 3 via the chain 13. Further, the tip of a chute 14 for introducing the object to be processed b into the rotary retort 3 is inserted into one end of the rotary retort 3 by airtightly penetrating the lid 5, and the other end The distal end of the gas introduction pipe 16 is inserted through the plug part 17 in an airtight manner.
そして、浸炭用のエンリッチガスＣや外気排除用のキャ
リアガスｄあるいは浸炭促進用の各種ガスａを前記ガス
導入管１６を通して前記回転レトルト３内に導入するこ
とによって、該回転レトルト３内に浸炭雰囲気ａを形成
するようにしている。Then, by introducing enrich gas C for carburizing, carrier gas d for removing outside air, or various gases a for promoting carburization into the rotary retort 3 through the gas introduction pipe 16, a carburizing atmosphere is created in the rotary retort 3. I am trying to form a.
さらに、この回転レトルト３の周壁の他端近傍部には、
該回転レトルト３内の被処理物ｂを外部へ排出するため
の開口部１８が穿設してある。そして、前記回転レトル
ト３の多端近傍部の下面部には、前記開口部１８を通し
て回転レトルト３外へ落下する浸炭済みの被処理物ｂ・
・・を焼入油槽１９内に案内するためのシュート２１の
上端が臨ませてある。Furthermore, near the other end of the peripheral wall of the rotating retort 3,
An opening 18 is provided for discharging the object b in the rotary retort 3 to the outside. The lower surface of the rotary retort 3 near the other end is provided with a carburized workpiece b that falls out of the rotary retort 3 through the opening 18.
The upper end of a chute 21 for guiding ... into the quenching oil tank 19 is exposed.
このような熱処理装置において、前記回転レトルト３の
外周囲に固定レトルト２２を設け、この固定レトルト２
２によって前記同転レトルト３内の浸炭雰囲気ａを前記
断熱壁１およびヒータ４・・・から隔離しでいる。置体
的に説明すれは、固定レトルト２２は、前記回転しトル
ト３よりも大径な円筒体状のもので、耐熱性がありかつ
ガスの通過を遮断し得る材料によって作られでいる。そ
して、この固定レトルト２２の両喘外周にはフランジ２
２ａ、２２ｂが形成してあり、一方のフランジ２２ａを
前記蓋体５のフランジ２２ｂを気密に重合させるととも
に他方のフランジ２２ｂを前記蓋体６のフランジ６ａに
気密に重合させている。なお、前記蓋体５．６の回転部
品貫通部分、例えは、ローラ８の支軸２３が前記蓋体５
の端板５ｂを貫通する部分や前記回転レトルト８が前記
蓋体６の中心部を貫通する部分等には、グランドパッキ
ン２４等の軸封部材が設けてある。したがって、前記固
定レトルト２２の両側開口部は、前記蓋体５．６によっ
て完全に密閉されている。In such a heat treatment apparatus, a fixed retort 22 is provided around the outer periphery of the rotary retort 3, and the fixed retort 2
2 isolates the carburizing atmosphere a in the co-rotating retort 3 from the heat insulating wall 1 and the heaters 4 . In terms of structure, the stationary retort 22 is a cylindrical body having a larger diameter than the rotating tort 3, and is made of a material that is heat resistant and can block the passage of gas. The fixed retort 22 has flanges 2 on its outer periphery.
2a and 22b are formed, one flange 22a being airtightly superposed on the flange 22b of the lid 5, and the other flange 22b being airtightly superposed on the flange 6a of the lid 6. Note that the rotating parts penetrating portion of the lid 5.6, for example, the support shaft 23 of the roller 8 is connected to the lid 5.
A shaft sealing member such as a gland packing 24 is provided at a portion where the rotary retort 8 passes through the end plate 5b and a portion where the rotary retort 8 passes through the center of the lid 6. Therefore, both openings of the stationary retort 22 are completely sealed by the lid 5.6.
このような構成のものであれは、シュータ１４を介して
回転レトルト３の一端部内に導入された被処理物ｂ・・
・は該回転レトルト３の回転に伴って惹起される搬送リ
ブ３の付勢作用によって矢印Ｘ方向へ搬送される。そし
て、これらの被処理物ｂ・・・は、前記回転レトルト３
内を移動する際に、ヒータ４・・・により加熱されると
ともに該回転レトルト３内に形成された浸炭雰囲気ａに
触れて浸炭処理が施される。そして、前記回転レトルト
３の他端部１８が下を向く毎に該開口部１８を通して順
次回転レトルト３外へ導出され、シュート２１を通して
焼入油槽１９内に投入される。With such a configuration, the workpiece b introduced into one end of the rotary retort 3 through the chute 14...
* is transported in the direction of arrow X by the urging action of the transport ribs 3 caused by the rotation of the rotary retort 3. These objects to be processed b... are transported to the rotary retort 3.
When moving inside the rotary retort 3, it is heated by the heaters 4 and comes into contact with the carburizing atmosphere a formed inside the rotary retort 3, thereby performing carburizing treatment. Then, each time the other end 18 of the rotary retort 3 faces downward, it is sequentially guided out of the rotary retort 3 through the opening 18 and introduced into the quenching oil tank 19 through the chute 21.
このようにして、被処理物ｂ・・・に浸炭処理と焼入処
理とを順次連続して施すことができるわけであるが、本
発明では、回転レトルト３の外周囲に固定レトルト２２
を設けて、前記浸炭雰囲気ａを前記断熱壁１およびヒー
タ４・・・から隔離している。そのため、回転レトルト
３内の雰囲気ガスが前記ヒータ４・・・に触れることが
なく、ヒータ４の寿命が長くなる。ちなみに、図示実施
例のものでは、固定レトルトのないものと比較してヒー
タ４・・・の寿命が５倍以上長くなった。また、このよ
うなものでは、固定レトルト２２の内側に雰囲気ガスが
充満しさえすれば、浸炭作業を開始することができる。In this way, the carburizing treatment and the quenching treatment can be successively performed on the object b...
is provided to isolate the carburizing atmosphere a from the heat insulating wall 1 and the heater 4 . Therefore, the atmospheric gas in the rotary retort 3 does not come into contact with the heaters 4, and the life of the heaters 4 is extended. Incidentally, in the illustrated embodiment, the lifespan of the heaters 4 was more than five times longer than in the case without a fixed retort. Moreover, in such a retort, carburizing work can be started as long as the inside of the fixed retort 22 is filled with atmospheric gas.
したがって、断熱壁１内に含まれる空気がすべて雰囲気
ガスと置き換るまで正常な運転を開始することができな
い従来のものに比べて、いわゆるシーズニング時間を、
例えば、１／６程度と、非常に短くすることかできる。Therefore, compared to conventional systems in which normal operation cannot be started until all the air contained within the insulation wall 1 is replaced with atmospheric gas, the so-called seasoning time is reduced.
For example, it can be made very short, about 1/6.
さらに、かかる構成によれば、ヒータ４・・・のリード
線挿通孔等のシール部から炉内に漏入した空気が浸炭雰
囲気ａ内に侵入するおそれがない。そのため、浸炭雰囲
気ａ中に空気が侵入するのを防ぐためのキャリアガスｄ
の消費量が従来のものに比べで、例えば、１／３程度と
、非常に少なくなる。したがって、本装置によれば、ラ
ンニングコストを従来装置に比べて大幅に低減させるこ
とができるものである。Further, with this configuration, there is no possibility that air leaking into the furnace from the seal portions such as the lead wire insertion holes of the heaters 4 will enter the carburizing atmosphere a. Therefore, a carrier gas d is used to prevent air from entering the carburizing atmosphere a.
The consumption amount is very small, for example, about 1/3 compared to the conventional one. Therefore, according to the present device, running costs can be significantly reduced compared to conventional devices.
なお、固定レトルトの形状は、図示実施例のものに限ら
れないのは勿論であり、本発明の趣旨を逸脱しない範囲
で種々変形が可能である。Note that the shape of the fixed retort is, of course, not limited to that of the illustrated embodiment, and can be modified in various ways without departing from the spirit of the present invention.
本発明は、以上のような構成であるから、ヒータの長寿
命化を図ることができるとともに、シーズニングに要す
る時間を大幅に短縮することが可能であり、さらに、キ
ャリアガスの消費量を低減させることもできる連続式熱
処理装置を提供できるものである。Since the present invention has the above configuration, it is possible to extend the life of the heater, significantly shorten the time required for seasoning, and further reduce the consumption of carrier gas. It is possible to provide a continuous heat treatment apparatus that can also perform heat treatment.
図面は本発明の一実施例を示す概略断面図である。
１・・断熱壁、２・・・炉本
３・・回転レトルト ４・・・ヒータ
２２・・・固定レトルト ａ・・・浸炭雰囲気ｂ・・・
被処理物The drawing is a schematic sectional view showing an embodiment of the present invention. 1... Heat insulation wall, 2... Furnace main body 3... Rotating retort 4... Heater 22... Fixed retort a... Carburizing atmosphere b...
Processed object
Claims (1)
るとともに、この回転レトルトと前記断熱壁の内面間に
ヒータを配置し、前記回転レトルト内に形成した浸炭雰
囲気中で被処理物に順次浸炭処理を施し得るように構成
した熱処理装置において、前記回転レトルトの外周囲に
固定レトルトを設け、この固定レトルトによって前記回
転レトルト内の浸炭雰囲気を前記断熱壁およびヒータか
ら隔離したことを特徴とする連続式熱処理装置。A rotary retort is disposed within a furnace body constituted by a heat insulating wall, and a heater is disposed between the rotary retort and the inner surface of the heat insulating wall, and the workpieces are sequentially coated in a carburizing atmosphere formed in the rotary retort. A heat treatment apparatus configured to perform carburizing treatment, characterized in that a fixed retort is provided around the outer periphery of the rotary retort, and the fixed retort isolates the carburizing atmosphere in the rotary retort from the heat insulating wall and the heater. Continuous heat treatment equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20959782A JPS59100267A (en) | 1982-11-29 | 1982-11-29 | Continuous heat treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20959782A JPS59100267A (en) | 1982-11-29 | 1982-11-29 | Continuous heat treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59100267A true JPS59100267A (en) | 1984-06-09 |
Family
ID=16575455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20959782A Pending JPS59100267A (en) | 1982-11-29 | 1982-11-29 | Continuous heat treatment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59100267A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61153271A (en) * | 1984-11-13 | 1986-07-11 | エア−．プロダクツ．アンド．ケミカルス．インコ−ポレ−テツド | Promoted carburization by indivisual atomosphere |
-
1982
- 1982-11-29 JP JP20959782A patent/JPS59100267A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61153271A (en) * | 1984-11-13 | 1986-07-11 | エア−．プロダクツ．アンド．ケミカルス．インコ−ポレ−テツド | Promoted carburization by indivisual atomosphere |
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