CH304535A - Device for inductively heating workpieces using high frequency. - Google Patents
Device for inductively heating workpieces using high frequency.Info
- Publication number
- CH304535A CH304535A CH304535DA CH304535A CH 304535 A CH304535 A CH 304535A CH 304535D A CH304535D A CH 304535DA CH 304535 A CH304535 A CH 304535A
- Authority
- CH
- Switzerland
- Prior art keywords
- inductors
- workpiece
- secondary inductors
- high frequency
- workpieces
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 title claims description 8
- 230000001939 inductive effect Effects 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/362—Coil arrangements with flat coil conductors
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Description
Einrichtung zum induktiven Erhitzen von Werkstücken mittels Hochfrequenz. Device for inductively heating workpieces using high frequency.
Bei der induktiven Erwârmung von Werk stücken von solcher Form, daB geschlossene ringfërmige Induktoren nicht an die zu er wârmende Stelle herangebracht werden kbn nen, wie zum Beispiel bei den Laufflâchen an mehrfach gekr & pften Kurbelwellen, ist es bekannt, aufklappbare Induktoren mit nur Biner Windung zu verwenden. Nachteilig ist dabei, da der Induktorstrom, welcher bei grMeeren Leistungen bis zu 1000 A und mehr betragen kann, liber zwei Kontaktstellen fliel3en muB. Das erfordert Bine besonders sorgfâltige und sehr robuste Ausführung der Kontaktstelle. Der gleichzeitige Einbau der Wasserabschreckung ist schwierig und führt zu teuren Konstruktionen. Die vorliegende Erfindung vermeidet diese Nachteile. In the inductive heating of workpieces of such a shape that closed ring-shaped inductors cannot be brought to the point to be heated, such as in the case of the running surfaces on crankshafts with multiple offsets, it is known to use hinged inductors with only one winding to use. The disadvantage here is that the inductor current, which can be up to 1000 A and more for larger power ratings, must flow via two contact points. This requires a particularly careful and very robust design of the contact point. Simultaneous installation of the water quench is difficult and results in expensive constructions. The present invention avoids these disadvantages.
Die Erfmdung betrifft cine Einrichtung zum induktiven Erhitzen vori Werkstücken, insbesondere der Lauffl5,chen von Kurbel wellen, mittels lIochfrequenzstrbmen. The invention relates to a device for inductive heating in front of workpieces, in particular the running surfaces of crankshafts, by means of high-frequency currents.
Die Erfindung besteht darin, daf# miride stens zwei gegen das Werkstück bewegbare plattenfôrmige, in Biner Ebene angeordnete Sekundârinduktoren vorhanden sind, und daB ein vom Hochfrequenzstrom durchflossener Primârinduktor vorhanden ist, dessen Win dungsebene parallel zu den Sekundârinduk toren angeordnet ist und das Werkstück um schlieBt, und daB in den Sekund6,rinduktoren Strüme induziert werden, die ihrerseits das Werkstück induktiv erhitzen. The invention consists in the fact that there are at least two plate-shaped secondary inductors that can be moved against the workpiece and are arranged in a plane, and that there is a primary inductor through which high-frequency current flows, the winding plane of which is arranged parallel to the secondary inductors and encloses the workpiece. and that currents are induced in the secondary inductors, which in turn heat the workpiece inductively.
Ein Ausführungsbeispiel der Erfindung wird an Hand der Zeichnung nâher erlâu tert. An embodiment of the invention is explained in more detail with reference to the drawing.
1 ist Bine Kurbelwelle mit der Abkr5p fung 2, bei dem die Oberflâche des Kurbel zapfens zweeks Hârtung induktiv erhitzt wer den soli. 4 und 5 sied plattenfôrmige sekun dâre Induktoren. Sie sied in Biner Ebene angeordnet und lassen sich in einfacher Weise von beiden Seiten gegen das Werkstück heran bringen. Die Einrichtung dafür ist nieht ge zeichnet. Die Induktoren weisen halbzylin drische Aussehnitte 4a und 5a auf; von denen die zu hârtende Lauffl6,che mit geringem Abstand ümschlossen wird, wobei die Induk toren durch Luftspalt Oder Abstützungen von einander isoliert sied. Parallel zu den 'Sekun dârinduktoren ist der Primârinduktor ange bracht. Dieser besteht aus Biner -Spule mit zweckmâBigerweise zwei Windungen 6 und 7, welche zur Verbesserung der Kopplung auf beiden 'Seiten symmetrisch zu den Sekundâr induktoren angeordnet sind. Der Primâr induktor 6 imd 7 umschliel3t das Werkstück. Der Windungsdurchmesser ist dabei so groB gewâhlt, daB der Induktor bequem liber die Krtipfungen der Kurbelwelle geschoben wer den kann. Der Primârinduktor ist mit dem Hochfrequenzgenerator verbunden. Die Se kundârinduktoren bestehen zweckmS,Big aus massiven. Kupferplatten. Die Kupferplatten kônnen mit Kühlwasserkanâlen versehen sein (strichpunktiert gezeichnet). Der Zu- imd Ab- 1 is a crankshaft with the abbreviation 2, in which the surface of the crank pin is inductively heated for hardening purposes. 4 and 5 are plate-shaped secondary inductors. They are arranged in a plane and can easily be brought against the workpiece from both sides. The facility for this is not drawn. The inductors have semi-cylindrical cutouts 4a and 5a; of which the running surface to be hardened is enclosed at a small distance, with the inductors being isolated from one another by air gaps or supports. The primary inductor is installed parallel to the secondary inductors. This consists of a binary coil with expediently two windings 6 and 7, which are arranged symmetrically to the secondary inductors on both sides to improve the coupling. The primary inductor 6 and 7 encloses the workpiece. The diameter of the coil is chosen so large that the inductor can easily be pushed over the offsets of the crankshaft. The primary inductor is connected to the high-frequency generator. The secondary inductors consist of solid. copper plates. The copper plates can be provided with cooling water channels (dash-dotted line). The Zu- and Ab-
flu8 des Kühlwassers erfolgt liber Anschluf3 stutzen 8 und 8a bzw. 9 und 9a. Ferner k5n nen Zuleitungen 1!0 und 11 für die Ziûüh rung der Abschreckflüssigkeit angebracht werden. Der Primârinduktor kann auch mehr als.zwei Windungen aufweisen. Flow8 of the cooling water takes place via connection pieces 8 and 8a or 9 and 9a. In addition, supply lines 1!0 and 11 can be attached to supply the quenching liquid. The primary inductor can also have more than two turns.
Die Wirkungsweise ist folgende Die zu behandelnde Kurbelabkrôpfung wird in den Primârinduktor 6 und 7 gescho ben. Darauf werden von beiden Seiten her die 'Sekund5,rinduktoren 4 und 5 eingeschoben. Der Rochfrequenzstrom in dem Primârinduk tor @6 und 7 induziert in den Sekund5,rinduk toren 4 und 5 Wirbelstr & me, welche mit maxmaler Stromdichte liber die Oberfl5.che der Schmalseite der Platten flieBen und so immittelbar . dicht liber der zu erhitzenden Laufflâche 3 der Kurbelwelle hinweggeführt werden. Ihr geringer Abstand von der Lauf fl5che bewirkt die erwünschte induktive Er hitzung der Oberflâche dieser Laiûfl5,che. Nach erfolgter Erhitzung wird durch die Zu führimgskan5,le 10 + 1:1 das Abschreckwasser Qingespritzt und die erhitzte Laufflâche abge schreckt. The mode of action is as follows: The crank offset to be treated is pushed into the primary inductor 6 and 7. Then the 'Second5, inductors 4 and 5 are pushed in from both sides. The high-frequency current in the primary inductor @6 and 7 induces eddy currents in the secondary inductors 4 and 5, which flow with maximum current density over the surface of the narrow side of the plates and thus immediately . be guided away just above the running surface 3 of the crankshaft to be heated. Their small distance from the running surface causes the desired inductive heating of the surface of this running surface. After the heating has been completed, the quenching water Qin is injected through the supply channels 10 + 1:1 and the heated running surface is quenched.
Die erfindungsgemS,Be Einrichtung hat den Vorteil, dal3 Kontaktstellen, welche bei jedem HS,rtungsvorgang zu schlieBen und zu 5ffnen wâren, wegfallen. .Ferner ist es m & g lich, sehr kurzë Werkstückstellen, entspre chend der Dicke der Platten, induktiv zu er hitzen. Besonders vorteilhaft ist dies bei der Erhitzung der Lauffl5,chen komplizierter Kur belwellen. Die Herstellung der Induletoren aus The device according to the invention has the advantage that there are no contact points which would have to be closed and opened for each HV detection process. .Furthermore, it is possible to inductively heat very short parts of the workpiece, depending on the thickness of the plates. This is particularly advantageous when heating the running surfaces of complicated crankshafts. The manufacture of the induletors
massiven Kupferplatten ist verhâltnismS,Big einfach und billig. Auch die Einrichtungen für das Einschieben der sekund5,ren Induk toren lâI3t sich in einfacher Weise herstellen, da sie keine stromffihrenden Teile enthâlt. Der Primârinduktor kann so groB gemaeht werden, dal3 das Werkstück bei entfernten 'Sekundârinduktoren imbehindert cingeführt werden kann. solid copper plates is relatively, big simple and cheap. The devices for pushing in the secondary inductors can also be produced in a simple manner, since they contain no current-carrying parts. The primary inductor can be made large enough to allow the workpiece to be passed through unhindered when the secondary inductors are removed.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1083042X | 1952-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH304535A true CH304535A (en) | 1955-01-15 |
Family
ID=4556500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH304535D CH304535A (en) | 1952-09-06 | 1952-09-06 | Device for inductively heating workpieces using high frequency. |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH304535A (en) |
| FR (1) | FR1083042A (en) |
| NL (1) | NL86763C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1030484B (en) * | 1955-12-09 | 1958-05-22 | Licentia Gmbh | Hardening process with inductive heating of crankshafts, camshafts or similar elongated shafts with irregular, non-circular and / or eccentric profiles and a device for this |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2814707A (en) * | 1954-11-12 | 1957-11-26 | Rca Corp | Induction heating device |
-
0
- NL NL86763D patent/NL86763C/xx active
-
1952
- 1952-09-06 CH CH304535D patent/CH304535A/en unknown
-
1953
- 1953-09-04 FR FR1083042D patent/FR1083042A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1030484B (en) * | 1955-12-09 | 1958-05-22 | Licentia Gmbh | Hardening process with inductive heating of crankshafts, camshafts or similar elongated shafts with irregular, non-circular and / or eccentric profiles and a device for this |
Also Published As
| Publication number | Publication date |
|---|---|
| NL86763C (en) | |
| FR1083042A (en) | 1955-01-04 |
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