JPS638743Y2 - - Google Patents
Info
- Publication number
- JPS638743Y2 JPS638743Y2 JP1982179479U JP17947982U JPS638743Y2 JP S638743 Y2 JPS638743 Y2 JP S638743Y2 JP 1982179479 U JP1982179479 U JP 1982179479U JP 17947982 U JP17947982 U JP 17947982U JP S638743 Y2 JPS638743 Y2 JP S638743Y2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- hardening
- shaft
- hardened
- workpiece
- 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
- 230000004907 flux Effects 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 8
- 229910000859 α-Fe Inorganic materials 0.000 claims description 6
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 5
- 238000010791 quenching Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 229920001342 Bakelite® Polymers 0.000 description 2
- 239000004637 bakelite Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000630 rising effect Effects 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)
Description
【考案の詳細な説明】
本考案は軸物の高周波焼入技術、特に径が変化
する軸物の高周波焼入コイルに関する。[Detailed Description of the Invention] The present invention relates to an induction hardening technology for shafts, and particularly to an induction hardening coil for shafts whose diameter changes.
軸径が変化する軸物を移動焼入する場合、軸径
が大きくなる立ち上がり部は焼入深さが得にく
く、逆に軸径が大きい部位では、焼入深さが深く
なりすぎる傾向にある。 When moving and hardening a shaft object whose shaft diameter changes, it is difficult to obtain hardening depth in the rising portion where the shaft diameter increases, and conversely, the hardening depth tends to become too deep in the portion where the shaft diameter is large.
そのため、軸径が変化する軸物ワークを従来方
式の焼入コイルで移動焼入すると、第１図Ｂ部で
4.5mm以上の焼入深さを得ようとすると、第１図
Ａ部では軸心まで焼きが入つてしまう。 Therefore, when a shaft workpiece whose shaft diameter changes is moved and hardened using a conventional hardening coil, part B in Figure 1
If you try to obtain a hardening depth of 4.5mm or more, the hardening will occur all the way to the shaft center in part A in Figure 1.
逆に第１図Ａ部で軸心まで焼きが入らないよう
に焼入条件を設定すると、第１図Ｂ部では3.8mm
程度の焼入深さしか得ることができないという欠
点がある。 Conversely, if the hardening conditions are set so that the hardening does not extend to the shaft center in part A in Figure 1, the hardening will be 3.8 mm in part B in Figure 1.
The disadvantage is that only a certain degree of quenching depth can be obtained.
また、軸径が変化する軸物では、焼入コイルと
ワークとの距離の最も近い部位が、焼入コイル内
面に対面する部位であるとはかぎらないとか、軸
径の小さい部位の方が焼入コイルとの距離が近く
ても、その部位がキユーリーポイント温度に達す
ると透磁率が低下して、軸径が大きく、まだ温度
が低い透磁率の高い部位の方に電力を取られてし
まうなどのため、軸径の小さい部位の焼入深さが
浅くなりがちであるという欠点がある。 In addition, for shaft products with varying shaft diameters, the part closest to the hardening coil and the workpiece may not necessarily be the part facing the inner surface of the hardening coil, or the part with a smaller shaft diameter may be harder to harden. Even if the distance from the coil is close, when that part reaches the Curie point temperature, the magnetic permeability will decrease, and the power will be drawn to the part with a larger shaft diameter and higher permeability that is still at a lower temperature. Therefore, there is a drawback that the quenching depth tends to be shallow in areas where the shaft diameter is small.
これらを解決するため、焼入コイル幅を狭くし
たり、ワークと焼入コイルのギヤツプを広げると
か、非常に低い周波数で焼入を行おうとする試み
がなされているが、いずれの方法もうまくいか
ず、均一な焼入深さを得る技術は確立していな
い。 To solve these problems, attempts have been made to narrow the width of the quenching coil, widen the gap between the workpiece and the quenching coil, or perform quenching at a very low frequency, but none of these methods have worked. However, no technology has been established to obtain a uniform hardening depth.
このため、このような軸径の変化のある軸物に
対しては、移動焼入は行われず、定置型の焼入装
置で一度に焼入を行うのが通常となつている。 For this reason, moving hardening is not performed on shafts with such changes in shaft diameter, and it is customary to harden them all at once using a stationary hardening device.
本考案は、軸径が変化する軸物の高周波焼入に
おいて、焼入コイルからの磁束をできるかぎり軸
方向に集中させることによつて、焼入コイル内面
に対面する部位のみを加熱せしめるため、焼入コ
イルから出る磁束を、ワークの焼入コイル内面に
対面する部分にしか当てないようにして軸径が変
化する軸物においても、ワーク全体において必要
な焼入深さ範囲とすることのできる移動焼入用コ
イルの提供を目的とする。 In induction hardening of shaft objects whose shaft diameters change, the present invention concentrates the magnetic flux from the hardening coil in the axial direction as much as possible, thereby heating only the portion facing the inner surface of the hardening coil. By applying the magnetic flux emitted from the input coil only to the part of the workpiece that faces the inner surface of the hardening coil, it is possible to achieve the required hardening depth range for the entire workpiece, even for shaft objects whose shaft diameter changes. The purpose is to provide necessary coils.
かかる目的は、軸径が変化する軸物の高周波焼
入において、焼入コイル内径より小さい内径をも
つたフエライトコア又は珪素鋼板等の磁束遮蔽部
材で、焼入コイルの少なくとも上下面を被覆し、
磁束が焼入コイル幅とほぼ等しい範囲で、ワーク
に当たるようにしたことを特徴とする移動焼入用
コイルによつて達成される。 This purpose is to cover at least the upper and lower surfaces of the quenched coil with a magnetic flux shielding member such as a ferrite core or silicon steel plate having an inner diameter smaller than the inner diameter of the quenched coil in induction hardening of a shaft whose shaft diameter changes.
This is achieved by a moving hardening coil characterized in that the magnetic flux hits the workpiece in an area approximately equal to the width of the hardening coil.
以下添付図面に基づいて、本考案の実施例を説
明する。第１図は本考案にかかる移動焼入用コイ
ルの一実施例を示す。 Embodiments of the present invention will be described below based on the accompanying drawings. FIG. 1 shows an embodiment of a moving hardening coil according to the present invention.
本考案にかかるこの実施例の焼入コイル２にお
いては、焼入コイル２は内周部をしぼることによ
つて磁束を集中させ、また、フエライトコア３を
焼入コイル２内周面より1.5mm程度内方へ張り出
させるとともに、焼入コイル２の上下面及び外径
を被覆することによつて、磁束の広がりを押さえ
るようにしている。 In the hardened coil 2 of this embodiment according to the present invention, the hardened coil 2 concentrates the magnetic flux by squeezing the inner peripheral part, and the ferrite core 3 is placed 1.5 mm from the inner peripheral surface of the hardened coil 2. By making the hardened coil 2 protrude inward and covering the upper and lower surfaces and outer diameter of the hardened coil 2, the spread of the magnetic flux is suppressed.
ワーク１は軸径が変化する軸物の一例である。
このワーク１に対し、上記本考案にかかる焼入コ
イル２を、ワーク１から一定のギヤツプの位置に
配設し、この焼入コイル２から一定距離下方の位
置（本実施例ではボルト６及びナツト７により設
定）に、冷却水噴出用ジヤケツト４を設けてい
る。 The workpiece 1 is an example of a shaft object whose shaft diameter changes.
For this work 1, the hardening coil 2 according to the present invention is disposed at a certain gap position from the work 1, and at a certain distance below the hardening coil 2 (in this example, the bolt 6 and nut 7) is provided with a cooling water jetting jacket 4.
上記構成のもとで、焼入コイル２に高周波電流
を流し、ワーク１を回転させながら一定のワーク
送り速度にて下降させることにより、軸心まで焼
きの入つた部位を生ずることなく、ワーク全体に
必要な焼入深さを確保して移動焼入を行うもので
ある。第１図には高周波焼入パターン７を併せ記
してある。 With the above configuration, by passing a high-frequency current through the hardening coil 2 and lowering the workpiece 1 at a constant feed speed while rotating the workpiece 1, the entire workpiece can be completely heated without causing any hardened parts up to the axial center. This method performs moving hardening while ensuring the required hardening depth. FIG. 1 also shows an induction hardening pattern 7.
また第２図は本考案の他の実施例で、第１図の
フエライトコアの代わりに珪素鋼板８を焼入コイ
ル２内周及び上下面・外周面に対して放射状に貼
りつけ、さらにその外周をベークライト９で被覆
した焼入コイル２の一例である。 FIG. 2 shows another embodiment of the present invention, in which silicon steel plates 8 are attached radially to the inner circumference, upper and lower surfaces, and outer circumferential surfaces of the hardened coil 2 instead of the ferrite core shown in FIG. This is an example of a hardened coil 2 coated with Bakelite 9.
この焼入コイル２においても、第１図に示す焼
入コイル２とほぼ同様に、軸径の変化する軸物の
焼入に好適に使用できるものである。 Similarly to the hardening coil 2 shown in FIG. 1, this hardening coil 2 can also be suitably used for hardening shaft objects with varying shaft diameters.
以上から明らかなように、本考案にかかる焼入
コイルを使用することによつて、ワーク送り速度
を一定とした移動焼入において、軸径が変化する
軸物の高周波焼入に際しても、軸心まで焼きの入
つた部位を生ずることなく、ワーク全体に必要な
焼入深さを得ることができる利点がある。 As is clear from the above, by using the hardening coil according to the present invention, even during moving hardening with a constant workpiece feed rate, even during induction hardening of a shaft whose shaft diameter changes, it is possible to reach the shaft center. There is an advantage that the necessary hardening depth can be obtained for the entire workpiece without creating hardened areas.
第１図は本考案にかかる焼入コイルとワークの
断面を示す図、第２図は第１図のフエライトコア
の代わりに珪素鋼板を焼入コイル内周及び上下
面・外周面に対して放射状に貼りつけた焼入コイ
ルを示す。
１……ワーク、２……焼入コイル、３……フエ
ライトコア、４……冷却ジヤケツト、５……ボル
ト、６……ナツト、７……高周波焼入パターン、
８……珪素鋼板、９……ベークライト。
Fig. 1 is a diagram showing a cross section of the hardened coil and workpiece according to the present invention, and Fig. 2 shows a silicon steel plate in place of the ferrite core shown in Fig. The quenched coil attached to the is shown. 1... Workpiece, 2... Hardened coil, 3... Ferrite core, 4... Cooling jacket, 5... Bolt, 6... Nut, 7... Induction hardening pattern,
8...Silicon steel plate, 9...Bakelite.
Claims (1)
入コイル内径より小さい内径をもつたフエライト
コア又は珪素鋼板等の磁束遮蔽部材で、焼入コイ
ルの少なくとも上下面を被覆し、磁束が焼入コイ
ル幅とほぼ等しい範囲で、ワークに当たるように
したことを特徴とする移動焼入用コイル。 In induction hardening of shaft objects whose shaft diameters change, at least the top and bottom surfaces of the hardened coil are covered with a magnetic flux shielding member such as a ferrite core or silicon steel plate with an inner diameter smaller than the hardened coil's inner diameter, and the magnetic flux is transferred to the hardened coil. A moving hardening coil that is characterized in that it hits the workpiece in an area that is approximately equal to its width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982179479U JPS5983963U (en) | 1982-11-26 | 1982-11-26 | Mobile hardening coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982179479U JPS5983963U (en) | 1982-11-26 | 1982-11-26 | Mobile hardening coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5983963U JPS5983963U (en) | 1984-06-06 |
| JPS638743Y2 true JPS638743Y2 (en) | 1988-03-16 |
Family
ID=30389406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982179479U Granted JPS5983963U (en) | 1982-11-26 | 1982-11-26 | Mobile hardening coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5983963U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2623254B2 (en) * | 1987-07-29 | 1997-06-25 | 高周波熱錬株式会社 | Heating coil for hardening the peripheral one shot |
| JPH11219779A (en) * | 1998-01-30 | 1999-08-10 | Fuji Denshi Kogyo Kk | Core for high frequency heating coil and high frequency heating coil using it |
| JP3300290B2 (en) * | 1998-09-22 | 2002-07-08 | 富士電子工業株式会社 | Induction hardened coil body |
-
1982
- 1982-11-26 JP JP1982179479U patent/JPS5983963U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5983963U (en) | 1984-06-06 |
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