JPS5952211B2 - Heat treatment method for metal annular body - Google Patents
Heat treatment method for metal annular bodyInfo
- Publication number
- JPS5952211B2 JPS5952211B2 JP10702578A JP10702578A JPS5952211B2 JP S5952211 B2 JPS5952211 B2 JP S5952211B2 JP 10702578 A JP10702578 A JP 10702578A JP 10702578 A JP10702578 A JP 10702578A JP S5952211 B2 JPS5952211 B2 JP S5952211B2
- Authority
- JP
- Japan
- Prior art keywords
- annular body
- heat treatment
- metal annular
- treatment method
- surface 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
- 239000002184 metal Substances 0.000 title claims description 11
- 238000010438 heat treatment Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 9
- 239000000463 material Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Description
【発明の詳細な説明】
この発明は、金属製環状体の熱処理方法に関し更に詳し
くは、変形の発生を防止した環状体の熱処理方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of heat treating a metal annular body, and more particularly, to a method of heat treating a toroidal body that prevents deformation from occurring.
金属製環状体、特に薄肉でしかも径の比較的大なる金属
製環状体に熱処理を施す場合、歪が発生し易く、環状体
が変形することはよく経験することであり、このように
して環状体素材に変形が生ずると、後の仕上げ加工に手
数がかかるばかりでなく、変形が大なる場合には、製品
不良となる。When applying heat treatment to a metal annular body, especially a thin-walled metal annular body with a relatively large diameter, it is common to experience distortion and deformation of the annular body. If deformation occurs in the body material, not only will subsequent finishing work be laborious, but if the deformation is large, the product will be defective.
この発明は、上記に鑑み、熱処理に際して、生ずる変形
を゛極力低減せしめることを可能にする環状体熱処理方
法を提供することを目的としてなされたもので、本発明
においては所定の温度に加熱処理した金属製環状体を加
熱された状態で定盤上に置き、その環状体の上端周縁に
球面体を全周に亘り対接させ、該球面で環状体を前記定
盤に押し付けながら、冷却させることよりなる金属製環
状体の熱処理方法に係る。In view of the above, the present invention has been made for the purpose of providing a method for heat treating an annular body that makes it possible to minimize the deformation that occurs during heat treatment. A metal annular body is placed on a surface plate in a heated state, a spherical body is brought into contact with the upper edge of the annular body over the entire circumference, and the annular body is cooled while being pressed against the surface plate with the spherical surface. The present invention relates to a heat treatment method for a metal annular body.
以下に図示の実施例により本発明の詳細な説明する。The present invention will be explained in detail below with reference to the illustrated embodiments.
第１図において、所定の処理温度に加熱した金属製環状
体１を、速やかに平定盤２の上に載置し下面が球面４で
なる押圧体５を該球面が前記環状体１の上端内周縁３に
全周に亘り対接する如く押し当てて環状体を定盤との間
で加圧しながら冷却させる。In FIG. 1, a metal annular body 1 heated to a predetermined processing temperature is immediately placed on a flat surface plate 2, and a pressing body 5 whose lower surface is a spherical surface 4 is pressed so that the spherical surface is within the upper end of the annular body 1. The annular body is pressed against the peripheral edge 3 so as to be in contact with the entire circumference, and the annular body is cooled while being pressurized between it and the surface plate.
上記の如くして熱処理を施す場合、環状体１は□処理温
度から冷却する過程で、定盤２と球面４との間に挾まれ
て加圧された状態に保持され、球面４は環状体１に対し
てこれを下方に、即ち、平定盤２側に押し付ける力Ｆ１
を及ぼすと同時に、これを径方向外方に拡張する方向に
力Ｆ２を及ぼす。When performing heat treatment as described above, the annular body 1 is held between the surface plate 2 and the spherical surface 4 in a pressurized state during the cooling process from the treatment temperature, and the spherical surface 4 is held in a pressurized state. 1, the force F1 that presses it downward, that is, toward the flat surface plate 2 side
At the same time, a force F2 is applied in a direction that expands this radially outward.
従って、環状体１は該拡張力Ｆ２の作用により真円状態
を維持した状態で冷却されるために熱処理による歪の発
生が効果的に防止される。Therefore, the annular body 1 is cooled while maintaining its perfect circular state due to the action of the expansion force F2, so that distortion due to heat treatment is effectively prevented.
ここで、押圧体５の下面の球面４の曲率半径ｒはこれが
過度に大なる場合には、垂直力Ｆ１に対□して拡張力Ｆ
２が小さくなり、従って、真円状態への矯正効果が弱ま
る。Here, if the radius of curvature r of the spherical surface 4 on the lower surface of the pressing body 5 becomes excessively large, the expansion force F
2 becomes smaller, and therefore the effect of correcting the shape to a perfect circle becomes weaker.
また、曲率半径ｒが過度に小なる場合には、Ｆｏに対す
るＦ２の比が大となり、加圧力が大なる場合に環状体１
の上端部が拡張され、上端部の径が大きくなり易くなる
。Moreover, if the radius of curvature r becomes excessively small, the ratio of F2 to Fo becomes large, and if the pressing force becomes large, the annular body 1
The upper end is expanded, making it easier to increase the diameter of the upper end.
° 本発明においては、処理する環状体の材質や処理温
度等により相当の巾はあるが押圧体５の下方球面の曲率
半径ｒを環状体１の半径ｒの３７２から１０倍程度とす
ることにより効果が得られる。° In the present invention, the radius of curvature r of the lower spherical surface of the pressing body 5 is set to about 372 to 10 times the radius r of the annular body 1, although the width varies considerably depending on the material of the annular body to be treated, the processing temperature, etc. Effects can be obtained.
上述の如くで、本発明方法により熱処理を施す；場合、
変形の発生が少ない環状要素材が得られ、変形発生によ
る不良率発生を大巾に低減することが可能になる。as described above, and subjected to heat treatment according to the method of the invention;
An annular element material with less deformation can be obtained, and it is possible to significantly reduce the defective rate due to deformation.
第１図は、本発明による熱処理方法において採用される
冷却装置を断面で示す。
図中：１・・・金属製環状体、２・・・定盤、３・・・
環状体の上端内周縁、４・・・球面、５・・・押圧体、
Ｆｌ・・・垂直力、Ｆ２・・・拡張力。FIG. 1 shows, in cross section, a cooling device employed in the heat treatment method according to the invention. In the diagram: 1...Metal annular body, 2...Surface plate, 3...
Upper inner peripheral edge of the annular body, 4... Spherical surface, 5... Pressing body,
Fl: Vertical force, F2: Expansion force.
Claims (1)
上に置き、該金属製環状体の上端周縁に球面体を対接さ
せ、該球面で該環状体を定盤に押し付けながら冷却する
ことよりなる金属製環状体の熱処理方法。1 Place a metal annular body that has been heat-treated to a predetermined treatment temperature on a surface plate, place a spherical body against the upper edge of the metal annular body, and cool the annular body while pressing it against the surface plate with the spherical surface. A method for heat treatment of a metal annular body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10702578A JPS5952211B2 (en) | 1978-09-02 | 1978-09-02 | Heat treatment method for metal annular body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10702578A JPS5952211B2 (en) | 1978-09-02 | 1978-09-02 | Heat treatment method for metal annular body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5534654A JPS5534654A (en) | 1980-03-11 |
| JPS5952211B2 true JPS5952211B2 (en) | 1984-12-18 |
Family
ID=14448600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10702578A Expired JPS5952211B2 (en) | 1978-09-02 | 1978-09-02 | Heat treatment method for metal annular body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5952211B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0281915U (en) * | 1988-12-14 | 1990-06-25 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994019499A1 (en) * | 1993-02-19 | 1994-09-01 | Ab S K F | Method for heat treatment and fixture therefore |
| CN102010967B (en) * | 2010-12-30 | 2013-01-09 | 二重集团（德阳）重型装备股份有限公司 | Method and special cushion block for controlling deformation of oversize steel plate in high temperature heat treatment |
-
1978
- 1978-09-02 JP JP10702578A patent/JPS5952211B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0281915U (en) * | 1988-12-14 | 1990-06-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5534654A (en) | 1980-03-11 |
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