JPH0192030A - Thermal treating method and device for annular member - Google Patents
Thermal treating method and device for annular memberInfo
- Publication number
- JPH0192030A JPH0192030A JP62247696A JP24769687A JPH0192030A JP H0192030 A JPH0192030 A JP H0192030A JP 62247696 A JP62247696 A JP 62247696A JP 24769687 A JP24769687 A JP 24769687A JP H0192030 A JPH0192030 A JP H0192030A
- Authority
- JP
- Japan
- Prior art keywords
- annular member
- jig
- frequency induction
- hardening
- tempering
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 59
- 230000006698 induction Effects 0.000 claims abstract description 31
- 238000005496 tempering Methods 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000010791 quenching Methods 0.000 claims description 33
- 230000000171 quenching effect Effects 0.000 claims description 33
- 239000000110 cooling liquid Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
Description
【発明の詳細な説明】
ａ、産業上の利用分野
本発明は、例えば自動車のトランスミンシッン等に用い
られる各種の環状部材の熱処理方法及びその熱処理装置
に関し、特に、焼入治具に焼ばめされた環状部材を焼も
どし処理するのに適した熱処理方法及び熱処理装置に関
するものである。Detailed Description of the Invention: a. Field of Industrial Application The present invention relates to a heat treatment method and a heat treatment apparatus for various annular members used, for example, in automotive transformers. The present invention relates to a heat treatment method and a heat treatment apparatus suitable for tempering a fitted annular member.
ｂ、従来の技術
環状部材を焼入処理するに際しては、この環状部材を加
熱して膨張させた状態で円柱状の焼入治具に嵌着し、次
いで環状部材を焼入のために冷却し、この際に生じる環
状部材の内径の収縮を利用して環状部材を焼入治具に焼
ばめし、これによって焼入処理時の焼入歪の発生を防止
する方法が従来より行なわれている。b. Prior art When hardening an annular member, the annular member is heated and expanded and fitted into a cylindrical hardening jig, and then the annular member is cooled for hardening. Conventionally, the shrinkage of the inner diameter of the annular member that occurs at this time is utilized to shrink-fit the annular member to the quenching jig, thereby preventing the occurrence of quenching distortion during the quenching process. .
また、焼入後の焼もどし処理を行なうに際しては、環状
部材を焼入治具から取り外してから電気炉にて焼もどし
加熱を行ない、その後に冷却するようにしている。Further, when performing tempering treatment after quenching, the annular member is removed from the quenching jig, then tempered and heated in an electric furnace, and then cooled.
Ｃ０発明が解決しようとする問題点
上述の如く、従来では、焼入処理後の環状部材を焼入治
具から逐−取り外して焼もどし処理をする必要があるた
め、その取り外し作業に手間を要するのみならず、焼も
どし工程を一連の自動化された熱処理ラインに組み込む
ことができないという大きな問題点があった。C0 Problems to be Solved by the Invention As mentioned above, in the past, it was necessary to remove the annular member from the quenching jig one by one after the quenching process and then perform the tempering process, which took time and effort to remove. Another major problem was that the tempering process could not be integrated into a series of automated heat treatment lines.
本発明は、このような実状に鑑みてなされたものであっ
て、その目的は、焼もどし工程を一連の自動化された熱
処理ラインに組み込みことができ、焼もどし処理を短時
間のうちに行なうことができ、しかも熱処理により生じ
る歪量を小さ（抑え得るような環状部材の熱処理方法及
び熱処理装置を提供することにある。The present invention was made in view of the above circumstances, and its purpose is to incorporate the tempering process into a series of automated heat treatment lines and to perform the tempering process in a short time. It is an object of the present invention to provide a heat treatment method and a heat treatment apparatus for an annular member, which can reduce the amount of distortion caused by heat treatment.
ｄ０問題点を解決するための手段
既述の従来の問題点を解決するために、本発明に係る熱
処理方法にあっては、
（ａｌ 熱処理すべき環状部材を加熱して焼入治具に
嵌着する工程と、
（ｂ） 嵌着された前記環状部材を冷却して焼入処理
すると共に、この際に生じる収縮により前記環状部材を
前記焼入治具に焼ばめする工程と、（ｃ） 前記環状
部材を、前記焼入治具に焼ばめされている状態のまま、
高周波誘導加熱して冷却することにより、前記環状部材
の焼もどし処理を施す工程と、
ｌｄ） 焼もどし処理を施された前記環状部材を前記
焼入治具から取り外す工程と、
を順次行なうようにしている。Means for Solving the d0 Problem In order to solve the above-mentioned conventional problems, the heat treatment method according to the present invention includes (al) heating the annular member to be heat treated and fitting it into a quenching jig. (b) cooling and quenching the fitted annular member, and shrink-fitting the annular member to the quenching jig by the shrinkage that occurs at this time; (c) ) The annular member remains shrink-fitted to the hardening jig,
The steps of: tempering the annular member by high-frequency induction heating and cooling; and ld) removing the tempered annular member from the quenching jig. ing.
また、本発明に係る熱処理装置にあっては、焼入処理さ
れて焼入治具に焼ばめされた環状部材を、前記焼入治具
に焼ばめされた状態のまま焼もどし加熱を行なう高周波
誘導加熱機構と、高周波誘導加熱された前記環状部材を
焼もどし処理の後に適宜冷却する冷却機構とをそれぞれ
具備せしめるようにしている。Further, in the heat treatment apparatus according to the present invention, the annular member that has been hardened and shrink-fitted to the hardening jig is tempered and heated while it is still shrink-fitted to the hardening jig. and a cooling mechanism for suitably cooling the annular member subjected to high-frequency induction heating after the tempering treatment.
以下、本発明の実施例に付き図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図〜第３図は本発明に係る環状部材の熱処理方法を
実施するための熱処理装置を示すものであって、これら
の図において、１は熱処理すべき環状部材、２は小径部
２ａ及び大径部２ｂから成る円柱状の焼入治具、３は高
周波誘導加熱コイル、４は冷却液を噴出する冷却ジャケ
ットである。1 to 3 show a heat treatment apparatus for carrying out the method of heat treatment of an annular member according to the present invention. In these figures, 1 indicates the annular member to be heat treated, 2 indicates the small diameter portion 2a and A cylindrical hardening jig consisting of a large-diameter portion 2b, 3 a high-frequency induction heating coil, and 4 a cooling jacket for spouting a cooling liquid.
次に、上述の熱処理装置を用いて環状部材１を熱処理（
焼入・焼もどし処理）する際の操作に付き述べる。Next, the annular member 1 is heat treated (
This section describes the operations for quenching and tempering.
まず、環状部材１を図外の電気炉又は高周波誘導加熱装
置にて所定の焼入温度に加熱し、これに伴い熱膨張にて
拡大した環状部材１の中心孔ｌｄ内に焼入治具２の小径
部２ａを挿入する。この後に、環状部材１を急冷するこ
とにより焼入処理を施すとともに、この際に生じる環状
部材１の中心孔１ａの収縮により環状部材１を焼入治具
２の小径部２ａに焼ばめする。First, the annular member 1 is heated to a predetermined quenching temperature in an electric furnace or high-frequency induction heating device (not shown), and the quenching jig 2 is inserted into the center hole ld of the annular member 1, which has expanded due to thermal expansion. Insert the small diameter part 2a. After this, the annular member 1 is subjected to a hardening treatment by rapidly cooling it, and the annular member 1 is shrink-fitted into the small diameter portion 2a of the hardening jig 2 due to the shrinkage of the center hole 1a of the annular member 1 that occurs at this time. .
そして、焼入治具２に焼ばめされかつ焼入処理が施され
た環状部材１の外周に高周波誘導加熱コイル３を対応配
置し、第１図に示すように焼入治具２から取り外すこと
なくこの焼入治具に焼ばめした状態のまま、高周波誘導
加熱コイル３にて環状部材１を所定の焼もどし温度に高
周波誘導加熱する０次いで、高周波誘導加熱コイル３を
加熱ポジションから移動させる一方、このポジションに
冷却ジャケット４を移動配置して冷却液を環状部材１に
噴射することによりこの環状部材１を冷却する。Then, a high-frequency induction heating coil 3 is placed correspondingly around the outer periphery of the annular member 1 that has been shrink-fitted to the hardening jig 2 and subjected to hardening treatment, and is removed from the hardening jig 2 as shown in FIG. The annular member 1 is heated by high-frequency induction to a predetermined tempering temperature using the high-frequency induction heating coil 3 while it is still shrink-fitted to this hardening jig without being heated.Next, the high-frequency induction heating coil 3 is moved from the heating position. At the same time, the annular member 1 is cooled by moving the cooling jacket 4 to this position and injecting cooling liquid onto the annular member 1.
このようにして、焼もどし処理を施した後、環状部材１
を図外の引抜き手段にて焼入治具２から引抜いて取り外
し、焼入・焼もどし処理のなされた製品としての環状部
材１を得る。After performing the tempering treatment in this way, the annular member 1
is pulled out and removed from the hardening jig 2 using a pulling means (not shown) to obtain the annular member 1 as a product that has been hardened and tempered.
なお、環状部材１の寸法、材質等並びに高周波誘導加熱
の条件の具体例は次の通りである。In addition, specific examples of the dimensions, material, etc. of the annular member 1 and the conditions of high frequency induction heating are as follows.
−見体五一
１、環状部材１の形状
外径Ｌ＋ ： １２０ｍ
内径Ｌｘ ： １０５ｍ
厚さｊ！ ： ２０鶴
２、環状部材１の材質
ＳＣｒ ４２０Ｈ
３、環状部材１の前処理
浸炭放冷品
４、高周波誘導加熱の条件
周波数 ： ８ＫＨｚ
出力 ： ｌ０ＫＷ
加熱時間：
下表の表は、環状部材１を焼ばめした状態で高周波誘導
加熱により焼もどし処理をした上述の具体例の場合と、
従来の如く焼入後に環状部材を焼入治具から取り外して
電気炉で焼もどし処理をした場合の精度を対比して示す
ものである。- Specimen 51, shape of annular member 1 Outer diameter L+: 120m Inner diameter Lx: 105m Thickness j! : 20 Tsuru 2, Material of the annular member 1 SCr 420H 3, Pre-treatment of the annular member 1 Carburized cooling product 4, Conditions for high frequency induction heating Frequency: 8KHz Output: 10KW Heating time: The table below shows the annular member 1. In the case of the above-mentioned specific example in which the shrink-fitted state was tempered by high-frequency induction heating,
This figure compares and shows the accuracy when the annular member is removed from the quenching jig after quenching and tempered in an electric furnace as in the past.
上記表から明らかなように、環状部材１を焼入治具２か
ら取り外して高周波誘導加熱にて焼もどし加熱を施すと
、焼入後の焼入歪が少ながったものが、−高周波誘導加
熱により歪量が電気炉の場合に比べて可成り大きくなり
また焼入歪のバラツキが大きくなってしまうことがわか
る。その原因は、高周波誘導加熱は短時間での表面加熱
であるため、環状部材１内の残留応力の分布が不均一と
なり易いからであると考えられる。しかし、本発明の場
合のように、環状部材１を焼入治具に焼ばめしたまま焼
もどし処理を行なうようにすれば、高周波誘導加熱（短
時間で所定温度に加熱できる利点を有する）による加熱
手段を用いても歪量電気炉の場合とほぼ同じ程度に抑え
られる。As is clear from the table above, when the annular member 1 is removed from the quenching jig 2 and tempered by high-frequency induction heating, the one with less quenching distortion after quenching is -high-frequency induction heating. It can be seen that the amount of strain due to heating becomes considerably larger than that in the case of an electric furnace, and the variation in quenching strain becomes large. The reason for this is thought to be that since high-frequency induction heating heats the surface in a short time, the distribution of residual stress within the annular member 1 tends to be uneven. However, as in the case of the present invention, if the annular member 1 is shrink-fitted to the hardening jig and then subjected to the tempering treatment, high-frequency induction heating (which has the advantage of heating to a predetermined temperature in a short time) Even if a heating means is used, the amount of strain can be suppressed to approximately the same level as in the case of an electric furnace.
以上、本発明の実施例に付き述べたが、本発明は、既述
の実施例に限定されるものではなく、本発明の技術的思
想に基いて各種の変更が可能である。Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications can be made based on the technical idea of the present invention.
例えば、環状部材１の高周波誘導加熱コイル３による加
熱は、前工程での焼入処理と同じポジションで行なって
もよく、またこれとは別のポジションで行なってもよい
。また、焼入加熱を高周波誘導加熱コイルで行なう場合
には、焼もどし加熱用の高周波′ 誘導加熱コイル
３及び冷却ジャケット４を焼入・焼もどし用として兼用
するようにしてもよい。For example, the heating of the annular member 1 by the high-frequency induction heating coil 3 may be performed at the same position as the quenching treatment in the previous step, or may be performed at a different position. Further, when quenching heating is performed using a high frequency induction heating coil, the high frequency induction heating coil 3 for tempering heating and the cooling jacket 4 may also be used for quenching and tempering.
ｅ０発明の効果
以上の如く、本発明では、焼入処理時に焼入治具に焼ば
めした環状部材を焼ばめした状態のまま高周波誘導加熱
にて焼もどし処理するようにしているので、高周波誘導
加熱であっても焼もどし処理後の歪量を電気炉による加
熱の場合と同様な程度に抑えることができる。このため
、加熱手段として高周波誘導加熱を採用しても精度上な
んらの不都合を招来することがな（、しかも高周波誘導
加熱による焼もどし工程を一連の熱処理ラインに組み込
むことができ、ラインの自動化を図ることができる。ま
た、電気炉により焼もどし処理を行なう従来の方法の場
合には処理時間が長かったが（例えば、１〜１．５時間
）、本発明の場合のように高周波誘導加熱による焼もど
し処理によればその処理時間は比較的短時間（例えば、
約３０秒以内）で済み、大巾なスピードアップを図るこ
とができる。e0 Effects of the Invention As described above, in the present invention, the annular member shrink-fitted to the quenching jig during the quenching process is tempered by high-frequency induction heating while the annular member is shrink-fitted. Even with high-frequency induction heating, the amount of distortion after tempering can be suppressed to the same level as heating with an electric furnace. Therefore, even if high-frequency induction heating is used as the heating means, there will be no problem with accuracy (in addition, the tempering process using high-frequency induction heating can be incorporated into a series of heat treatment lines, making it possible to automate the line. In addition, in the case of the conventional method of performing tempering treatment using an electric furnace, the treatment time was long (for example, 1 to 1.5 hours), but as in the case of the present invention, high-frequency induction heating According to the tempering process, the processing time is relatively short (for example,
(about 30 seconds or less), which can greatly speed up the process.
図面は、本発明に係る熱処理方法を実施するための装置
を示すものであって、第１図は焼入治具に焼ばめされた
環状部材を高周波誘導加熱している状態を示す断面図、
第２図は加熱された環状部材を冷却している状態を示す
断面図、第３図は焼もどし処理後に環状部材を焼入治具
から取り外した状態を示す断面図である。
１・・・熱処理すべき環状部材、
１ａ・・・中央孔、
２・・・焼入治具、
３・・・高周波誘導加熱コイル、
４・・・冷却ジャケット。
特許出願人 電気興業株式会社
（ほか２名）The drawings show an apparatus for carrying out the heat treatment method according to the present invention, and FIG. 1 is a sectional view showing a state in which an annular member shrink-fitted to a hardening jig is subjected to high-frequency induction heating. ,
FIG. 2 is a sectional view showing the heated annular member being cooled, and FIG. 3 is a sectional view showing the annular member removed from the hardening jig after tempering. DESCRIPTION OF SYMBOLS 1... Annular member to be heat treated, 1a... Center hole, 2... Quenching jig, 3... High frequency induction heating coil, 4... Cooling jacket. Patent applicant Denki Kogyo Co., Ltd. (and 2 others)
Claims (1)
嵌着する工程と、 （ｂ）嵌着された前記環状部材を冷却して焼入処理する
と共に、この際に生じる収縮により前記環状部材を前記
焼入治具に焼ばめする工程と、 （ｃ）前記環状部材を、前記焼入治具に焼ばめされてい
る状態のまま、高周波誘導加熱して冷却することにより
、前記環状部材の焼もどし処理を施す工程と、 （ｄ）焼もどし処理を施された前記環状部材を前記焼入
治具から取り外す工程と、 を順次行なうことを特徴とする環状部材の熱処理方法。 ２、焼入処理されて焼入治具に焼ばめされた環状部材を
、前記焼入治具に焼ばめされた状態のまま焼もどし加熱
を行なう高周波誘導加熱機構と、高周波誘導加熱された
前記環状部材を焼もどし処理のために冷却する冷却機構
とをそれぞれ具備することを特徴とする環状部材の熱処
理装置。[Claims] 1. (a) heating the annular member to be heat treated and fitting it into a quenching jig; (b) cooling and quenching the fitted annular member; (c) shrink-fitting the annular member to the quenching jig due to the shrinkage generated at this time; (c) applying high frequency induction to the annular member while it is shrink-fitted to the quenching jig; A step of subjecting the annular member to a tempering treatment by heating and cooling; and (d) a step of removing the annular member subjected to the tempering treatment from the quenching jig. A method for heat treatment of an annular member. 2. A high-frequency induction heating mechanism for tempering and heating an annular member that has been quenched and shrink-fitted to a quenching jig while being shrink-fitted to the quenching jig; and a cooling mechanism for cooling the annular member for tempering treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62247696A JP2631985B2 (en) | 1987-09-30 | 1987-09-30 | Heat treatment method for annular member and heat treatment apparatus therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62247696A JP2631985B2 (en) | 1987-09-30 | 1987-09-30 | Heat treatment method for annular member and heat treatment apparatus therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0192030A true JPH0192030A (en) | 1989-04-11 |
| JP2631985B2 JP2631985B2 (en) | 1997-07-16 |
Family
ID=17167289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62247696A Expired - Lifetime JP2631985B2 (en) | 1987-09-30 | 1987-09-30 | Heat treatment method for annular member and heat treatment apparatus therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2631985B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002079426A (en) * | 2000-06-30 | 2002-03-19 | Miyaden Co Ltd | Heating device for shrinkage fitting and heat-extracting |
| CN103737244A (en) * | 2013-12-23 | 2014-04-23 | 青特集团有限公司 | Casting axle housing pressing shaft tube method |
| CN104511718A (en) * | 2014-12-19 | 2015-04-15 | 陕西北人印刷机械有限责任公司 | High-frequency induction hot charging device of aluminum guide roller drain plug |
| CN104942529A (en) * | 2015-06-15 | 2015-09-30 | 北京金风科创风电设备有限公司 | Bearing heating device and bearing heating system |
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|---|---|---|---|---|
| JPS5837124A (en) * | 1981-08-27 | 1983-03-04 | High Frequency Heattreat Co Ltd | Stationary quenching and cooling method of annular body, and its device |
| JPS5913565A (en) * | 1982-07-15 | 1984-01-24 | Mitsubishi Heavy Ind Ltd | Production of casting |
| JPS59226118A (en) * | 1983-06-03 | 1984-12-19 | Ntn Toyo Bearing Co Ltd | High frequency hardening method of inside circumferential surface of thin walled cylindrical article having flange part |
-
1987
- 1987-09-30 JP JP62247696A patent/JP2631985B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5837124A (en) * | 1981-08-27 | 1983-03-04 | High Frequency Heattreat Co Ltd | Stationary quenching and cooling method of annular body, and its device |
| JPS5913565A (en) * | 1982-07-15 | 1984-01-24 | Mitsubishi Heavy Ind Ltd | Production of casting |
| JPS59226118A (en) * | 1983-06-03 | 1984-12-19 | Ntn Toyo Bearing Co Ltd | High frequency hardening method of inside circumferential surface of thin walled cylindrical article having flange part |
Cited By (5)
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|---|---|---|---|---|
| JP2002079426A (en) * | 2000-06-30 | 2002-03-19 | Miyaden Co Ltd | Heating device for shrinkage fitting and heat-extracting |
| JP4575562B2 (en) * | 2000-06-30 | 2010-11-04 | 株式会社ミヤデン | Heating device for tool shrink fit baking |
| CN103737244A (en) * | 2013-12-23 | 2014-04-23 | 青特集团有限公司 | Casting axle housing pressing shaft tube method |
| CN104511718A (en) * | 2014-12-19 | 2015-04-15 | 陕西北人印刷机械有限责任公司 | High-frequency induction hot charging device of aluminum guide roller drain plug |
| CN104942529A (en) * | 2015-06-15 | 2015-09-30 | 北京金风科创风电设备有限公司 | Bearing heating device and bearing heating system |
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| Publication number | Publication date |
|---|---|
| JP2631985B2 (en) | 1997-07-16 |
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