JPS5855561A - Carburization apparatus - Google Patents

Carburization apparatus

Info

Publication number
JPS5855561A
JPS5855561A JP15371181A JP15371181A JPS5855561A JP S5855561 A JPS5855561 A JP S5855561A JP 15371181 A JP15371181 A JP 15371181A JP 15371181 A JP15371181 A JP 15371181A JP S5855561 A JPS5855561 A JP S5855561A
Authority
JP
Japan
Prior art keywords
furnace
gas
uniform
carburization
product
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
Application number
JP15371181A
Other languages
Japanese (ja)
Inventor
Hidenori Nakamura
英紀 中村
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15371181A priority Critical patent/JPS5855561A/en
Publication of JPS5855561A publication Critical patent/JPS5855561A/en
Pending legal-status Critical Current

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
    • C23C8/08—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 only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces

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)
  • Furnace Details (AREA)

Abstract

PURPOSE:To provide a carburization apparatus having capacity capable of uniformly distributing a reactant gas in the atomosphere within a furnace under a reduced pressure, constituted by mounting porous gas rectifying plates to the upper and the lower parts in the furnace. CONSTITUTION:After a furnace 1 is evacuated, a reactant gas introduced from the inlet 2 thereof is dispersed throughout the radius direction in the furnace 1 by perforations provided to an introduced gas rectifying plate 7. After this dispersed gas is reacted with a product 4 to be treated, it is guided to an exhaust port 6 through an exhaust gas rectifying plate 8 by a vacuum pump 5 to be discharged out of the furnace 1. Therefore, a uniform gas stream is generated throughout the furnace and the distribution of the gas in the furnace is made uniform and uniform carburization can be applied to the product 4 to be treated.

Description

【発明の詳細な説明】 本発明は減圧容器内での浸炭処理に係シ、炉内ガスを均
一に分布させるため整流板にニジ炉内の均一な流れを得
る機能を有する浸炭装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a carburizing process in a reduced pressure vessel, and relates to a carburizing apparatus having a baffle plate having a function of obtaining a uniform flow in the furnace in order to uniformly distribute the gas in the furnace.

従来の減圧容器内での浸炭を行なう装置は、ガス導入口
を１ケ又は複数にして炉内へ導入する構造〃為、炉内ガ
ス攪拌用ファンを備えたもので６る。Conventional equipment for carburizing in a reduced pressure vessel has a structure in which gas is introduced into the furnace using one or more gas inlet ports, and is therefore equipped with a fan for stirring the gas in the furnace.

しかし、前者は大容積の炉内のガス分布の均一化は容易
でなく、又後者は駆動源を必要とし、高価であるなどの
欠点が６つ九。However, the former method has several disadvantages, such as it is difficult to make the gas distribution uniform in a large-volume furnace, and the latter method requires a driving source and is expensive.

本発明の目的は減圧容器下で均一な炉内ガス分布をし、
均一な浸炭品を得ることができる機能を有する浸炭装置
を提供することにある。The purpose of the present invention is to achieve uniform gas distribution in the furnace under a reduced pressure vessel,
It is an object of the present invention to provide a carburizing device having a function of obtaining uniformly carburized products.

この発明の特徴とするところはガス導入口およびガス排
気口に−Ｃれそれ整流板をつけ、炉内の上からＦへの半
径方向のガスの不均一分布をなくし炉内でのガスの流れ
を一様にすることにより均一なガス分布を得る点である
。The feature of this invention is that a -C rectifying plate is attached to the gas inlet and gas exhaust port, which eliminates uneven distribution of gas in the radial direction from the top of the furnace to F, and improves the flow of gas in the furnace. The point is to obtain a uniform gas distribution by making it uniform.

以下１本発明の一実施例を第１図および第２図により説
明する。第１図はイオン浸炭装置の全体図である。第２
図（ａ）（ｂ）は整流板の詳細の一例である。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is an overall view of the ion carburizing apparatus. Second
Figures (a) and (b) are examples of details of the current plate.

炉１の内部を減圧後、ガス導入口２よシ炉内１ヘガスを
導入し、電源３にニジ通電しグロー放電によシ被処理品
４を目的の温度に昇温し、引きつづきガス導入口２↓シ
浸炭性ガスを導入し浸炭する。一方、排気は真空ポンプ
５により排気口６から炉外へ放出する。しかし、ガス導
入口２、排気口６の直径に比べ炉内容積が着しく大きい
場合、炉内のガス分布が一様になシにくいが、本発明は
ガス導入口２および排気口６にそれぞＣ多孔質の円板状
の整流板７および８を設置した装置でらる。After reducing the pressure inside the furnace 1, gas is introduced into the furnace 1 through the gas inlet 2, the power supply 3 is continuously energized to raise the temperature of the product to be treated 4 to the target temperature by glow discharge, and the gas is continued to be introduced. Port 2↓ Carburizing gas is introduced and carburized. On the other hand, the exhaust gas is discharged to the outside of the furnace from an exhaust port 6 by a vacuum pump 5. However, if the internal volume of the furnace is significantly larger than the diameters of the gas inlet 2 and exhaust port 6, it is difficult to maintain uniform gas distribution within the furnace. This is a device in which porous disk-shaped current plates 7 and 8 are installed.

以下動作について説明する。The operation will be explained below.

炉内ｌ減圧後、ガス導入口２に導かれたガスは導入ガス
姫流板７に設けられた多孔により炉内の半径方向全体に
ガスが分散され、被処理品４と反応した後冥空ポツプ５
により排気ガス姫流板８をｍＦ＞排気口６に導かれ炉外
へ放出される。After the pressure inside the furnace is reduced, the gas introduced into the gas inlet 2 is dispersed throughout the radial direction of the furnace through the holes provided in the introduced gas flow plate 7, reacts with the workpiece 4, and then flows into the underworld. Pop 5
Therefore, the exhaust gas flow plate 8 is guided to the exhaust port 6 and discharged out of the furnace.

従って、炉内全体に一様なガスの流れを生じ、炉内ガス
分布が均一になシ、被処理品４は均一な浸炭が行なわれ
る効果がある。Therefore, a uniform gas flow is generated throughout the furnace, the gas distribution within the furnace is not uniform, and the workpiece 4 is uniformly carburized.

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

第１図はガス整流板を有するイオン浸炭装置の全体図、
第２図（ａ）（Ｌ））は整流板の断面図である。 １・・・炉、２・・・ガス導入口、３・・・電源、４・
・・被処理品、５・・・真空ポンプ、６・・・排気口、
７・・・ガス導入整流板、８・・・ガス排気整流板。 代理人　弁理士　薄田利幸 第　１　目Figure 1 is an overall view of an ion carburizing device with a gas baffle plate.
FIG. 2(a)(L)) is a sectional view of the current plate. 1...Furnace, 2...Gas inlet, 3...Power source, 4...
...Product to be processed, 5...Vacuum pump, 6...Exhaust port,
7... Gas introduction rectifier plate, 8... Gas exhaust rectifier plate. Agent Patent Attorney Toshiyuki Usuda 1st

Claims (1)

【特許請求の範囲】[Claims] 減圧容器内で浸炭を行なうときに反応ガスを炉内に均一
分布させるため、炉内上方および下方に多孔質のガス整
流板を備えた浸炭装置。A carburizing device equipped with porous gas baffle plates above and below the furnace in order to uniformly distribute the reaction gas inside the furnace when carburizing is carried out in a reduced pressure vessel.
JP15371181A 1981-09-30 1981-09-30 Carburization apparatus Pending JPS5855561A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15371181A JPS5855561A (en) 1981-09-30 1981-09-30 Carburization apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15371181A JPS5855561A (en) 1981-09-30 1981-09-30 Carburization apparatus

Publications (1)

Publication Number Publication Date
JPS5855561A true JPS5855561A (en) 1983-04-01

Family

ID=15568418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15371181A Pending JPS5855561A (en) 1981-09-30 1981-09-30 Carburization apparatus

Country Status (1)

Country Link
JP (1) JPS5855561A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2832735A1 (en) * 2001-11-24 2003-05-30 Bosch Gmbh Robert Device for cementation by depression of a marginal zone of a metallic component is performed in a reaction chamber fed by a reaction gas injection system providing a homogeneous concentration
JP2014122367A (en) * 2012-12-20 2014-07-03 Daido Steel Co Ltd Vacuum nitriding treatment method
JP2016000845A (en) * 2014-06-11 2016-01-07 株式会社Ihi Carburizing apparatus
CN113481466A (en) * 2021-07-07 2021-10-08 安徽新力电业科技咨询有限责任公司 Tubular furnace device system for gas nitriding

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2832735A1 (en) * 2001-11-24 2003-05-30 Bosch Gmbh Robert Device for cementation by depression of a marginal zone of a metallic component is performed in a reaction chamber fed by a reaction gas injection system providing a homogeneous concentration
JP2014122367A (en) * 2012-12-20 2014-07-03 Daido Steel Co Ltd Vacuum nitriding treatment method
JP2016000845A (en) * 2014-06-11 2016-01-07 株式会社Ihi Carburizing apparatus
CN113481466A (en) * 2021-07-07 2021-10-08 安徽新力电业科技咨询有限责任公司 Tubular furnace device system for gas nitriding

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