DE748993C - Power supply contact for the electrical resistance heating of workpieces made of iron - Google Patents
Power supply contact for the electrical resistance heating of workpieces made of ironInfo
- Publication number
- DE748993C DE748993C DEV37605D DEV0037605D DE748993C DE 748993 C DE748993 C DE 748993C DE V37605 D DEV37605 D DE V37605D DE V0037605 D DEV0037605 D DE V0037605D DE 748993 C DE748993 C DE 748993C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- power supply
- resistance heating
- electrical resistance
- supply contact
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Resistance Heating (AREA)
Description
Stromzuführungskontakt für die elektrische Widerstandserhitzung von Werkstücken .aus Eisen Gegenstand der Erfindung ist ein Stromzufiihrttngskontakt für die elektrische @,#'iderstandserhitzung von Werkstücken aus Eisen oder eisenähnlichen Metallen.Power supply contact for the electrical resistance heating of Workpieces made of iron The invention relates to a power supply contact for the electrical @, # 'resistance heating of workpieces made of iron or similar ones Metals.
Die bisherigen Kontakte, die aus Kupfer oder aber Kupferlegierungen bestehen, haben den Nachteil, daß sie für die Dauer entsprechend hohe Temperaturen, z. B. beim Erhitzen von Eisen, nicht aushalten und daher entsprechend gekühlt werden müssen.The previous contacts, those made of copper or copper alloys exist, have the disadvantage that they are correspondingly high temperatures for the duration, z. B. when heating iron, not withstand and are therefore cooled accordingly have to.
Normales Eisen ist als Kontaktmaterial schlecht verwendbar, weil es bei den Temperaturen sofort zundert; andererseits kann man zunderbeständiges Material nicht verwenden, weil dieses dem Strom einen sehr hohen Widerstand bietet, d. h. wesentlich stärker erhitzt würde als das zu behandelnde Eisen. Ein Mittel, um übliches unlegiertes Eisen bzw: Stahl für den Zweck verwendbar zu machen, ist das bekannte Diffundieren von Metallen in die Oberfläche. Als geeignete Metalle sind Aluminium, Nickel, Silber, insbesondere aber Chrom anzusehen. Während z. B. die reine Verchromung oder Vernickelung nur auf der Oberfläche haftet, verbindet sich das durch längere Wärmebehandlung mit entsprechendem Metallsalz behandelte Eisenstück an den Randzonen der Oberfläche innig mit dem entsprechenden Metall, wodurch diese hitzebeständig werden. Inchromiertes Eisen verträgt z. E. ,ohne weiteres dauernde Temperaturen von Soö°, ohne zu zundern.Normal iron is difficult to use as a contact material because it immediately scales at the temperatures; on the other hand, you can use non-scaling material do not use because this offers a very high resistance to the current, i. H. would be heated much more than the iron to be treated. A means to the usual It is well known to make unalloyed iron or steel usable for the purpose Diffusion of metals into the surface. Suitable metals are aluminum, Nickel, silver, but especially chrome. While z. B. the pure chrome plating or nickel plating only adheres to the surface, this connects through longer Heat treatment with appropriate metal salt treated pieces of iron on the edge zones the surface intimately with the corresponding metal, making it heat-resistant will. Inchromized iron tolerates z. E., without further ado, permanent temperatures from Soö ° without tinder.
Der wesentliche Vorteil des Kontaktes liegt darin, daß das sonst zwischen den Kontakten und dem - Werkstück vorhandene Wärmegefälle aufgehoben wird. Dieses liegt vielmehr in den Kontaktkörpern selbst.The main advantage of the contact is that the otherwise between the contacts and the workpiece - existing heat gradient is canceled. This rather lies in the contact bodies themselves.
Im nachfolgenden sind einige beispielsweise Ausführungsformen beschrieben.Some exemplary embodiments are described below.
Beim kontinuierlichen Glühen von Bändern läuft das Band entweder über zwei gekühlte Kontaktwalzen, oder aber man muß wegen der geringen Festigkeit, die Kupfer bei hohen Temperaturen hat, mit größerem Verschleiß rechnen.In the case of continuous annealing of strips, the strip either overflows two cooled contact rollers, or you have to because of the low strength that If copper is exposed to high temperatures, expect greater wear.
Beim Einspannen von Stangen oder Rohrmaterial muß die Zone an den Kontaktflächen kühl bleiben, weil sonst mit einem Verschmoren beider Teile zu rechnen ist, wodurch die Vorrichtung schnell unbrauchbar werden kann.When clamping rods or pipe material, the zone must be attached to the Contact surfaces remain cool, otherwise both parts can be expected to scorch is, whereby the device can quickly become unusable.
Bei sonstigen Anwendungen, z. B. dein Ausglühen von Rohren oder Stangenmaterial, ist es nicht einmal nötig, daß der Kontaktträger aus Kupfer besteht. Man kann vielmehr so weit gehen,. daß die Kontaktstücke im ganzen aus dem- so -diffundierten Material bestehen.For other applications, e.g. B. your annealing of pipes or bars, it is not even necessary that the contact carrier is made of copper. Rather, one can go so far. that the contact pieces as a whole diffused out of this Material.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV37605D DE748993C (en) | 1941-04-08 | 1941-04-08 | Power supply contact for the electrical resistance heating of workpieces made of iron |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV37605D DE748993C (en) | 1941-04-08 | 1941-04-08 | Power supply contact for the electrical resistance heating of workpieces made of iron |
Publications (1)
Publication Number | Publication Date |
---|---|
DE748993C true DE748993C (en) | 1944-11-14 |
Family
ID=7590380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEV37605D Expired DE748993C (en) | 1941-04-08 | 1941-04-08 | Power supply contact for the electrical resistance heating of workpieces made of iron |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE748993C (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE336038C (en) * | 1913-11-20 | 1921-04-21 | Augustus Charles Hyde | Process for impregnating iron with nickel |
-
1941
- 1941-04-08 DE DEV37605D patent/DE748993C/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE336038C (en) * | 1913-11-20 | 1921-04-21 | Augustus Charles Hyde | Process for impregnating iron with nickel |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE748993C (en) | Power supply contact for the electrical resistance heating of workpieces made of iron | |
DE692235C (en) | Process for the annealing of alloys for welding electrodes and electrical contacts | |
DE7805683U1 (en) | ELECTRICAL CONTACT FOR EQUIPMENT OF ELECTROCHEMICAL PROCESSING DEVICES | |
GB1235607A (en) | A conductor roller for conducting heavy electric currents, particularly in strip coating plants | |
DE610053C (en) | Hole mandrel for the extrusion of pipes | |
DE1165876B (en) | Use of a copper-chromium alloy for the production of electrically, mechanically and thermally highly stressed workpieces | |
DE560554C (en) | Salt bath oven | |
DE651944C (en) | Electrically heated hotplate | |
DE492776C (en) | Electric furnace for melting and melting glass, water glass, cement and other materials | |
DE1289394B (en) | Soldering iron tip, especially for electric soldering irons | |
DE767235C (en) | Arrangement for electro-inductive heating of workpieces with an inductor | |
DE185907C (en) | ||
AT158214B (en) | Heating plate. | |
DE520731C (en) | Heat element for monitoring electrical currents | |
DE693708C (en) | Use of molten metal | |
DE900514C (en) | Process for increasing the electrical conductivity of hardenable materials for welding electrodes based on copper-chromium | |
DE630856C (en) | Power supply electrode for electric salt baths | |
SU142435A1 (en) | Method for increasing the long-term durability of aluminum alloy sheets | |
DE886504C (en) | Process for regulating the temperature of salt bath ovens heated by electrodes | |
DE683782C (en) | Device for electrical resistance seam welding, especially of pipe longitudinal seams | |
AT165899B (en) | Electric tool for soldering, burning, melting or the like. | |
DE704425C (en) | Process for the electrical heating of light melt metal to be processed under heat | |
DE748099C (en) | Steel alloy for stirrer rods for smelting and copper alloys | |
AT127305B (en) | Heavy-duty, variable grinding resistance consisting of a resistance layer applied to insulating material. | |
DE522003C (en) | Hardening furnace for high-speed turning bars |