JPS6242993B2 - - Google Patents
Info
- Publication number
- JPS6242993B2 JPS6242993B2 JP1048080A JP1048080A JPS6242993B2 JP S6242993 B2 JPS6242993 B2 JP S6242993B2 JP 1048080 A JP1048080 A JP 1048080A JP 1048080 A JP1048080 A JP 1048080A JP S6242993 B2 JPS6242993 B2 JP S6242993B2
- Authority
- JP
- Japan
- Prior art keywords
- retort
- furnace
- gap
- heat treatment
- curved plate
- 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 6
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims 1
- 239000011449 brick Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005255 carburizing Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005256 carbonitriding Methods 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Description
【発明の詳細な説明】
本発明はレトルトタイプの熱処理雰囲気炉に関
するもので、シーズニング時間が短く、エネルギ
ーの節約が可能であり、築炉及び補修等が容易で
経済的であり、しかも耐久性を向上させ、さらに
雰囲気及び温度分布の乱れが生ずることがないこ
とを特徴とするものである。[Detailed Description of the Invention] The present invention relates to a retort type heat treatment atmosphere furnace, which has a short seasoning time, can save energy, is easy to construct and repair, is economical, and has excellent durability. Furthermore, it is characterized by the fact that the atmosphere and temperature distribution are not disturbed.
従来のこの種熱処理炉は耐火、耐熱レンガを用
いて構成されているため、炉の操業を開始してか
ら炉内の雰囲気及び温度分布を安定させて正常な
熱処理作業を行うまでの時間が長く、エネルギー
の損失が大である欠点があつた。 Conventional heat treatment furnaces of this type are constructed using refractory and heat-resistant bricks, so it takes a long time to stabilize the atmosphere and temperature distribution inside the furnace and perform normal heat treatment after the furnace starts operating. However, the disadvantage was that there was a large loss of energy.
すなわち、レンガは多孔質であり、酸化鉄
（Fe2O3）が含まれており、浸炭の場合にCO、H2
を含む還元性雰囲気ガスを用いるとそれらのガス
がレンガ中の酸化鉄（Fe2O3）と反応し、炉内の
露点が高くなる。この露点を必要とする値に下げ
るためには多量の還元性ガスと長い時間を必要と
し、頗る不経済である。 That is, the brick is porous, contains iron oxide (Fe 2 O 3 ), and in case of carburization, CO, H 2
When reducing atmosphere gases containing iron are used, those gases react with iron oxide (Fe 2 O 3 ) in the bricks, increasing the dew point in the furnace. Lowering this dew point to the required value requires a large amount of reducing gas and a long time, which is extremely wasteful.
それらは一旦炉を停止したのち、炉の操業を再
開する場合も同様であり、したがつて、簡単に炉
を停止させることができず、労働条件としても交
替制を採用せざるを得ない欠点があつた。 The same applies when the furnace is restarted after it has been temporarily stopped.Therefore, the furnace cannot be easily stopped, and the working conditions are forced to adopt a shift system. It was hot.
本発明は上記欠点を除去するため、炉本体内に
レトルトを設けたものである。しかしながら、レ
トルトを設けた場合、その耐久性を向上させるこ
とに苦慮するところである。 In order to eliminate the above drawbacks, the present invention provides a retort within the furnace body. However, when a retort is provided, it is difficult to improve its durability.
すなわち、本発明の炉はガス浸炭、浸炭窒化、
軟窒化あるいは光揮熱処理等に使用することがで
き、ガス浸炭の場合には炉内温度が最高900℃に
まで上昇させられる。 That is, the furnace of the present invention can perform gas carburizing, carbonitriding,
It can be used for soft nitriding or photovolatile heat treatment, and in the case of gas carburizing, the temperature inside the furnace can be raised to a maximum of 900°C.
その結果、レトルトが長手方向及び円周方向に
熱膨脹させられる。したがつて、レトルト両端の
取付部を、上記熱膨脹を十分に吸収できる構造と
する必要がある。 As a result, the retort is thermally expanded longitudinally and circumferentially. Therefore, it is necessary that the mounting portions at both ends of the retort have a structure that can sufficiently absorb the above-mentioned thermal expansion.
本発明は上記の要求を満足させてなるもので、
以下にその一実施例を図面について詳細に説明す
る。 The present invention satisfies the above requirements.
One embodiment will be described in detail below with reference to the drawings.
炉本体１は外殻をレンガ２で構成し、さらに底
部には別にレンガ３を設けて構成され、それらレ
ンガ２，３は金属板４により固定される。 The furnace body 1 has an outer shell made up of bricks 2 and a bottom part with additional bricks 3, and these bricks 2 and 3 are fixed by a metal plate 4.
つぎに上記炉本体１の内部には適当厚さの伸縮
性断熱材、例えばカウオール５を介してレトルト
６が設けられる。 Next, a retort 6 is provided inside the furnace body 1 via a stretchable heat insulating material, such as a cowl 5, of an appropriate thickness.
該レトルト６は耐熱性のすぐれたステンレス等
が使用され、予め上方にガス入口７が構成され、
下方にガス出口８が構成されている。 The retort 6 is made of stainless steel or the like with excellent heat resistance, and has a gas inlet 7 configured above in advance.
A gas outlet 8 is configured below.
図中９はヒーター、１０は搬送装置、１１は撹
拌用フアン、１２は撹拌用フアンを駆動するモー
ター、１３は入口扉、１４は出口扉である。 In the figure, 9 is a heater, 10 is a conveyance device, 11 is a stirring fan, 12 is a motor for driving the stirring fan, 13 is an entrance door, and 14 is an exit door.
本発明では上記レトルト６の両端の円周方向に
ドーナツ状取付板１５，１６が設けられる。 In the present invention, donut-shaped mounting plates 15 and 16 are provided at both ends of the retort 6 in the circumferential direction.
詳細に述べると、上記ドーナツ状取付板１５，
１６はそれぞれ外周端が上記炉本体１を構成する
金属板４側に固定され、その内周端を直接レトル
ト６と連結することなく、レトルト６の端部と少
し離れた位置となるよう構成する。 In detail, the donut-shaped mounting plate 15,
16 is configured such that its outer peripheral end is fixed to the metal plate 4 side constituting the furnace main body 1, and its inner peripheral end is located at a position slightly apart from the end of the retort 6 without being directly connected to the retort 6. .
すなわち、ドーナツ状取付板１５，１６とレト
ルト６の両端部間には第３図示のごとく、間隙ａ
が構成される。 That is, there is a gap a between the donut-shaped mounting plates 15 and 16 and both ends of the retort 6, as shown in the third figure.
is configured.
つぎに、上記間隙ａを彎曲板１７で連結すれば
本発明が完成する。 Next, the present invention is completed by connecting the gap a with the curved plate 17.
図面実施例の場合、彎曲板１７はヒーター９の
ラジアントチユーブを円形に曲げ加工し、長さ方
向に上記間隙ａと略々適合するスリツトｂを設
け、上記ドーナツ状取付板１５，１６とレトルト
６間に溶接により取付けて構成してある。 In the case of the embodiment shown in the drawings, the curved plate 17 is formed by bending the radiant tube of the heater 9 into a circular shape, and is provided with a slit b in the length direction that approximately matches the gap a, and connects the donut-shaped mounting plates 15 and 16 to the retort 6. It is constructed by being attached by welding in between.
なお、溶接部は溶接熱影響部改善のため、固溶
化処理を施すことが望ましい。 Note that it is desirable to perform solution treatment on the welded part in order to improve the weld heat affected zone.
上記のごとく、本発明はレトルト両端に炉本体
から設けられたドーナツ状取付板とレトルト端部
間を彎曲板で連結したため、該彎曲板で全方位、
すなわち、レトルトの長手方向及び円周方向の膨
張を吸収することができ、長い使用を継続しても
ドーナツ状取付板あるいはレトルト等に亀裂が生
ずることもなく、耐久性を向上させることができ
るものである。 As described above, in the present invention, the donut-shaped mounting plates provided from the furnace body at both ends of the retort and the retort end are connected by a curved plate, so that the curved plate can be used in all directions.
In other words, it is capable of absorbing expansion in the longitudinal and circumferential directions of the retort, and can improve durability without causing cracks in the donut-shaped mounting plate or the retort even after long periods of use. It is.
さらに、本発明によればシースニング時間の短
縮が図られ、したがつて一周間に一度炉を停止さ
せてもエネルギーの損失も少く、したがつて労働
条件の変更も可能であり、さらに築炉及び補修等
も従来の耐火、耐熱レンガ炉にくらべて容易であ
る効果を有するものである。 Furthermore, according to the present invention, the sheathening time can be shortened, so even if the furnace is stopped once in one cycle, there is little loss of energy, and therefore working conditions can be changed. It also has the advantage of being easier to repair than conventional fireproof and heat-resistant brick furnaces.
図面は本発明の一実施例を示すもので、第１図
は要部の縦断面図、第２図は一部切欠左側面図、
第３図は第１図Ｙ部の拡大断面図である。
１……炉本体、５……カウオール、６……レト
ルト、１７……彎曲板、ａ……間隙。
The drawings show one embodiment of the present invention; FIG. 1 is a vertical sectional view of the main part, FIG. 2 is a partially cutaway left side view,
FIG. 3 is an enlarged sectional view of section Y in FIG. 1. 1... Furnace body, 5... Cowall, 6... Retort, 17... Curved plate, a... Gap.
Claims (1)
の伸縮断熱材を介してレトルトが設けられ、該レ
トルト両端に炉本体から設けられたドーナツ状取
付板とレトルト端部間に適当な間隙を構成すると
ともに、該隙間を彎曲板で連結したことを特徴と
する熱処理雰囲気炉。 ２ 彎曲板が金属パイプの長さ方向に適当巾のス
リツトを入れ、円形に構成されてなることを特徴
とする特許請求の範囲第１項記載の熱処理雰囲気
炉。[Scope of Claims] 1. A retort is provided in the furnace body through an expandable heat insulating material such as cowl or glass fiber, and a suitable plate is installed between the donut-shaped mounting plates provided from the furnace body at both ends of the retort and the ends of the retort. A heat treatment atmosphere furnace characterized by forming a gap and connecting the gap with a curved plate. 2. The heat treatment atmosphere furnace according to claim 1, wherein the curved plate has a circular shape with a slit of an appropriate width formed in the length direction of the metal pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1048080A JPS56108088A (en) | 1980-01-31 | 1980-01-31 | Heatttreatment atmosphere furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1048080A JPS56108088A (en) | 1980-01-31 | 1980-01-31 | Heatttreatment atmosphere furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56108088A JPS56108088A (en) | 1981-08-27 |
| JPS6242993B2 true JPS6242993B2 (en) | 1987-09-10 |
Family
ID=11751316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1048080A Granted JPS56108088A (en) | 1980-01-31 | 1980-01-31 | Heatttreatment atmosphere furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56108088A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014111779A1 (en) | 2014-08-18 | 2016-02-18 | Iva Industrieöfen Gmbh | Process for producing a retort for a nitriding furnace and retort |
-
1980
- 1980-01-31 JP JP1048080A patent/JPS56108088A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56108088A (en) | 1981-08-27 |
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