JPS6311616A - Method for preventing discoloration in heat treatment of steel - Google Patents
Method for preventing discoloration in heat treatment of steelInfo
- Publication number
- JPS6311616A JPS6311616A JP15347286A JP15347286A JPS6311616A JP S6311616 A JPS6311616 A JP S6311616A JP 15347286 A JP15347286 A JP 15347286A JP 15347286 A JP15347286 A JP 15347286A JP S6311616 A JPS6311616 A JP S6311616A
- Authority
- JP
- Japan
- Prior art keywords
- steel parts
- steel
- heat treatment
- atmosphere gas
- parts
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 27
- 239000010959 steel Substances 0.000 title claims abstract description 27
- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- 238000002845 discoloration Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- 239000011888 foil Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
Landscapes
- Chemical Treatment Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、雰囲気炉を使用し、鋼の低温熱処理におい
てアルミホイルに部品を包むことにより変色を防止する
処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a treatment method for preventing discoloration by wrapping parts in aluminum foil during low-temperature heat treatment of steel using an atmospheric furnace.
従来の雰囲気炉を使用した鋼の熱処理においては、雰囲
気ガス中で２部品は裸のため雰囲気中の微量の酸素によ
り、変色（テンパーカラー）を生じることが度々発生し
た。In the heat treatment of steel using a conventional atmosphere furnace, since the two parts are bare in the atmosphere gas, discoloration (temper color) often occurs due to a trace amount of oxygen in the atmosphere.
雰囲気ガス炉を使用した鋼の熱処理でも、雰囲気ガス中
の微量の酸素により１部品が酸化し変色することがあっ
た。これは部品の品質上問題がちシ表面酸化層を機械加
工で削シ取るか。Even when steel is heat treated using an atmospheric gas furnace, one part may become oxidized and discolored due to trace amounts of oxygen in the atmospheric gas. This tends to be a problem in terms of the quality of the parts.Is it possible to remove the surface oxidized layer by machining?
グリッドプラストまたは、酸洗浄等で除去する必要が生
じ、余分の作業時間が掛る。又、熱処理後寸法変化が許
容されない部品は不良品として廃却すると言う不具合が
あった。It becomes necessary to remove it by Grid Plast or acid cleaning, which takes extra work time. In addition, there is a problem in that parts whose dimensions cannot be changed after heat treatment are discarded as defective products.
この発明は、比較的低温の熱処理において。This invention uses heat treatment at a relatively low temperature.
従来の方法が持つ以上のような問題点を解決させ、少な
い時間で確実な品質の熱処理部品を作ることを目的とし
ている。The aim is to solve the above-mentioned problems with conventional methods and to produce heat-treated parts of reliable quality in a short amount of time.
そこで本発明は、鋼部品を任意の雰囲気ガス中で熱処理
を行う熱処理法において、雰囲気ガス中で鋼部品をアル
ミホイルで包みながら熱処理を行うことを特徴とする鋼
の熱処理における変色防止法としだ。Therefore, the present invention provides a method for preventing discoloration in heat treatment of steel, which is a heat treatment method in which steel parts are heat treated in an arbitrary atmospheric gas, and is characterized in that the heat treatment is performed while wrapping the steel parts in aluminum foil in the atmospheric gas. .
すなわち本発明は、雰囲気ガス熱処理においても、鋼部
品をアルミホイルで包み２部品表面を雰囲気ガスの流れ
がない状態にする。この状態で熱処理すれば１部品とア
ルミホイルの空間の雰囲気ガス中の微量の酸素は、イオ
ン化傾向の大きいアルミの酸化に使われ、鋼部品の酸化
が防止出来ることとなり鋼部品の変色（テンパーカラー
）を防止出来る。That is, in the present invention, even in atmospheric gas heat treatment, the steel parts are wrapped in aluminum foil so that the surfaces of the two parts are kept in a state where there is no flow of atmospheric gas. If heat treatment is performed in this state, the trace amount of oxygen in the atmospheric gas in the space between one part and the aluminum foil will be used to oxidize aluminum, which has a strong tendency to ionize, and will prevent oxidation of steel parts, resulting in discoloration (temper color) of steel parts. ) can be prevented.
この発明の実施例を第１図を参照しながら説明する。 An embodiment of the invention will be described with reference to FIG.
鋼部品の無酸化熱処理は、雰囲気ガス炉を使用し、アル
ゴンガス、窒素ガス等非酸化性雰囲気ガス３中で行われ
るが、酸化変色しゃすい析出硬化型ステンレス鋼のエー
ジング、応力除去等、比較的低温熱処理（６５０’Ｃ以
下）のとき。Non-oxidizing heat treatment of steel parts is carried out in a non-oxidizing atmosphere gas such as argon gas or nitrogen gas using an atmospheric gas furnace. When subjecting to low temperature heat treatment (650'C or less).
鋼部品１を７ ／Ｌ、ミホイ／Ｌ、 ２ （ＪＩＳ −
Ｈ−４１６０融点６５８．９℃）にて２〜３重に包んで
、熱処理を行う。このような熱処理を行えば、雰囲気ガ
ス中の微量の酸素は先にアルミホイルの酸化に消化され
、析出硬化型ステンレス鋼の酸化変色が防止出来る。Steel parts 1 to 7/L, Mihoi/L, 2 (JIS -
Heat-treated at H-4160 (melting point 658.9°C), wrapped in two to three layers. If such heat treatment is performed, trace amounts of oxygen in the atmospheric gas will first be digested by oxidation of the aluminum foil, and oxidative discoloration of precipitation hardening stainless steel can be prevented.
雰囲気ガス熱処理においても１部品をアルミホイルに包
むことにより、アルミを先に酸化させることによシ、雰
囲気ガス中の微量の酸素の影響を受けることなく、鋼部
品の酸化変色を防止できる。Even in atmospheric gas heat treatment, by wrapping one component in aluminum foil, the aluminum is oxidized first, thereby preventing oxidative discoloration of the steel component without being affected by trace amounts of oxygen in the atmospheric gas.
この方法によれば２表面酸化層を除去することが不要と
なシ１部品製作の時間短縮１部品の品質確保が出来るも
のである。According to this method, it is not necessary to remove the surface oxidation layer, the time for manufacturing the part can be shortened, and the quality of the part can be ensured.
第１図は本発明の一実施例に係る方法を示す鋼部品及び
アルミホイルの断面図である。
１・・・鋼部品、２・・・アルミホイル、３・・・雰囲
気ガス（アルゴンガスまたは、窒素ガス）イ梵理人 坂
間 暁FIG. 1 is a cross-sectional view of a steel part and aluminum foil illustrating a method according to an embodiment of the present invention. 1...Steel parts, 2...Aluminum foil, 3...Atmosphere gas (argon gas or nitrogen gas) Akihito Sakama
Claims (1)
おいて、雰囲気ガス中で鋼部品をアルミホイルで包みな
がら熱処理を行う事を特徴とする鋼の熱処理における変
色防止法。A method for preventing discoloration in heat treatment of steel, which is a heat treatment method in which steel parts are heat treated in an arbitrary atmospheric gas, and the heat treatment is performed while the steel parts are wrapped in aluminum foil in the atmospheric gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15347286A JPS6311616A (en) | 1986-06-30 | 1986-06-30 | Method for preventing discoloration in heat treatment of steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15347286A JPS6311616A (en) | 1986-06-30 | 1986-06-30 | Method for preventing discoloration in heat treatment of steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6311616A true JPS6311616A (en) | 1988-01-19 |
Family
ID=15563316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15347286A Pending JPS6311616A (en) | 1986-06-30 | 1986-06-30 | Method for preventing discoloration in heat treatment of steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6311616A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0992590A1 (en) * | 1998-10-05 | 2000-04-12 | Peter Helmut Dipl.-Ing. Ebner | Process for bright annealing metals having high oxygen affinity |
-
1986
- 1986-06-30 JP JP15347286A patent/JPS6311616A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0992590A1 (en) * | 1998-10-05 | 2000-04-12 | Peter Helmut Dipl.-Ing. Ebner | Process for bright annealing metals having high oxygen affinity |
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