DE1095419B - Device for electrical resistance heat treatment of steel bars - Google Patents
Device for electrical resistance heat treatment of steel barsInfo
- Publication number
- DE1095419B DE1095419B DEG18010A DEG0018010A DE1095419B DE 1095419 B DE1095419 B DE 1095419B DE G18010 A DEG18010 A DE G18010A DE G0018010 A DEG0018010 A DE G0018010A DE 1095419 B DE1095419 B DE 1095419B
- Authority
- DE
- Germany
- Prior art keywords
- rod
- heat treatment
- electrical resistance
- resistance heat
- steel bars
- 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 description 5
- 238000010438 heat treatment Methods 0.000 title description 5
- 239000010959 steel Substances 0.000 title description 5
- 239000007787 solid Substances 0.000 claims description 2
- 229910000976 Electrical steel Inorganic materials 0.000 claims 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
- H05B3/00—Ohmic-resistance heating
- H05B3/0004—Devices wherein the heating current flows through the material to be heated
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
Vorrichtung zur elektrischen Widerstands -Wärmebehandlung von Stahlstäben Stahlstäbe größerer Länge bei kleinerem Querschnitt werden in Vorrichtungen zur Widerstands-Wärmebehandlung in den den Strom übertragenden Klemmbacken eingespannt, um -die bei stirnseitig angedrückten Kontaktkörpern den Stab ausknickende Kraft zu vermeiden. Klemmbacken haben aber den' Nachteil, daß die Stabenden nicht ausreichend erhitzt werden oder Schmorstellen erhalten. Schmorstellen des Stabmantels sind so gut wie immer unerwünscht, während sie an den Stirnflächen uribeachtlich sind.Device for electrical resistance heat treatment of steel bars Steel rods of greater length with a smaller cross-section are used in devices for Resistance heat treatment clamped in the clamping jaws that transmit the current, around the force kinking the rod when the contact bodies are pressed against the face to avoid. But clamping jaws have the disadvantage that the rod ends are insufficient be heated or stewed. Scorch marks on the stick coat are like that as always undesirable, while they are noticeable on the front surfaces.
Die Erfindung bezweckt, eine Vorrichtung zu schaffen, die es ermöglicht, die vorteilhaftere stirnseitige Kontaktgabe auch bei längeren Stäben, die zum Ausknicken neigen, anzuwenden.The aim of the invention is to create a device which makes it possible to the more advantageous frontal contact, even with longer rods that kink tend to apply.
Die Erfindung sieht dazu eine Vorrichtung vor, bei der die Kontaktkörper an den Stirnflächen des Stabes angreifen. Die Vorrichtung besitzt im Bereich jeder der beiden Kontaktkörper einen dem Stab als Auflager dienenden Teil, der auf einer festen Unterlage in Stabrichtung gegen eine Federkraft verschiebbar ist. Der Auflagerteil der Vorrichtung ist Widerlager der den Kontaktkörper gegen den Stab andrückenden Spannvorrichtung. Der Auflagerteil wird zweckmäßig als Klemmbackenpaar ausgebildet.To this end, the invention provides a device in which the contact body attack the end faces of the rod. The device has in the area everyone of the two contact bodies a part which serves as a support for the rod and which is on one solid base is displaceable in the direction of the rod against a spring force. The support part of the device is the abutment of the contact body pressing against the rod Jig. The support part is expediently designed as a pair of clamping jaws.
Die erfindungsgemäße Vorrichtung läßt sich außer bei Stahlstäben, die leicht ausknicken, ohne Änderung auch bei Stahlstäben weniger großer Knickgefahr verwenden, indem in letzterem Falle, sofern die Auflager als Klemmbacken ausgebildet sind, dieselben während des Erhitzungsvorganges nicht geschlossen werden.The device according to the invention can be used except for steel rods, which buckle easily, without any change, even with steel rods, there is less risk of buckling use by in the latter case, provided the supports are designed as clamping jaws are not closed during the heating process.
Die Feder dient zur Aufnahme der Längsdehnung des Stabes während dessen Erhitzung. Sie ist, sofern der Auflagerteil keine Klemmfunktion ausübt, in den Kraftschluß der Spannvorrichtung der Kontaktkörper eingeschaltet. Bei Festklemmung des Stabes nimmt die Feder nur die Bewegung auf, die durch die Wärmedehnung des Stabes entsteht.The spring serves to absorb the longitudinal expansion of the rod during this Heating. If the support part does not exercise a clamping function, it is in the frictional connection the clamping device of the contact body switched on. When the rod is clamped the spring only absorbs the movement caused by the thermal expansion of the rod.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG18010A DE1095419B (en) | 1955-09-20 | 1955-09-20 | Device for electrical resistance heat treatment of steel bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG18010A DE1095419B (en) | 1955-09-20 | 1955-09-20 | Device for electrical resistance heat treatment of steel bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1095419B true DE1095419B (en) | 1960-12-22 |
Family
ID=7120956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEG18010A Pending DE1095419B (en) | 1955-09-20 | 1955-09-20 | Device for electrical resistance heat treatment of steel bars |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1095419B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE524169C (en) * | 1928-11-18 | 1931-05-02 | Hirsch Kupfer Und Messingwerke | Process for bright annealing of metals |
| DE749576C (en) * | 1939-05-21 | 1944-11-28 | Device for the heat treatment of metal blocks, in particular made of brass, in an electric furnace | |
| DE877179C (en) * | 1950-12-06 | 1953-05-21 | Wilhelm Dipl-Ing Dr Stich | Method and arrangement for electrical resistance heating of steel rods, associated with their alignment |
-
1955
- 1955-09-20 DE DEG18010A patent/DE1095419B/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE524169C (en) * | 1928-11-18 | 1931-05-02 | Hirsch Kupfer Und Messingwerke | Process for bright annealing of metals |
| DE749576C (en) * | 1939-05-21 | 1944-11-28 | Device for the heat treatment of metal blocks, in particular made of brass, in an electric furnace | |
| DE877179C (en) * | 1950-12-06 | 1953-05-21 | Wilhelm Dipl-Ing Dr Stich | Method and arrangement for electrical resistance heating of steel rods, associated with their alignment |
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