CH109524A - Process for the production of stainless iron. - Google Patents
Process for the production of stainless iron.Info
- Publication number
- CH109524A CH109524A CH109524DA CH109524A CH 109524 A CH109524 A CH 109524A CH 109524D A CH109524D A CH 109524DA CH 109524 A CH109524 A CH 109524A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- iron
- electrodes
- bath
- melted
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Description
Verfahren zur Herstellung von nicht rostendem Eisen. Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von nicht rosten dem Eisen, z. B. nicht rostendein Stahl, durch Legierung von Eisen mit Chrom. Das Verfahren berulit darauf, dass Ferrochrom zu Elektroden geformt wird, welche in einem elektrischen Ofen gegen ein in diesem be findliches Bad a!-iis geschmolzenem Eisen ein geführt werden, wobei die Elektroden durch die von dem beim Übergang zwischen den Elektroden und dem Bacle in der Schlacke entstehenden Liplitbogen erzeugte Wider standswärme allmählich geschmolzen werden.
Das von der Elektrode abgeschinolzene Metall wird sicli allmählich mit dem Metall im Bad legieren. Da sieh immereine Schlacke auf dem: Metallbad bildet, weil in einem Schm#elzofen die Metalloberfläolie immer #oxy- diert -wird und das Schmelzen Jer Elektrode in dieser Stlilacke geschieht, wird ein Oxy dieren des Metalles verhindert.
Ein geeignetes Beispiel ist das folgende zur Herstellung von rostfreiem Stahl mit un- gefälir <B>15</B> '/o Chrom im Elektrodenofen.
Der Ofen wird mit Schmiedeschrot in ge- wöhnlicher Weise beselückt und derselbe ge- sühmolzen. Wenn alles mit Hilfe von Koli- lenelektro,den geschmolzen ist und eine ge eignete Temperatur, welche durch Regelung des Stromes erreicht wird, erreicht ist, wird, um den gewünschten Kohlüngehalt zu erhal ten, Eisenerz in Form von Stücken oder Bri ketten, zugesetzt. Dann werden die Kohlen- elektroden durch Elektroden aus Ferroelirom ersetzt.
Wenn die Temperatur in dem Me tallbad nach dem Schmelzen der Elektrode zu hoch wird, wird- Ferrochrom, Eisen oder ein anderer geeigneter Zusatz, der Wärm-e aufnimmt und die Temperatur erniedrigt, di rekt indas Bad eingeführt.
Das Verfahren nach vorliegender Erfin dung kann auch in einem Sieinens-Martin- Ofen, der mit Vorrichtung für das Zuführen der Elektroden versehen ist, ausgeführt wer den.
Process for the production of stainless iron. The present invention relates to a method for the production of non-rusting iron, e.g. B. stainless steel, by alloying iron with chromium. The method is based on the fact that ferrochrome is formed into electrodes which are introduced into an electric furnace against a bath of molten iron located in this, the electrodes being replaced by the electrodes at the transition between the electrodes and the bacle in the slag resulting Liplitbogen resistance heat generated are gradually melted.
The metal melted off the electrode will gradually alloy with the metal in the bath. Since a slag is always formed on the metal bath, because the metal surface is always oxidized in a melting furnace and the electrode is melted in this lacquer, the metal is prevented from oxidizing.
A suitable example is the following for the production of stainless steel with approximately 15% chromium in the electrode furnace.
The furnace is filled with forged meal in the usual way and the same is melted. When everything has been reached with the help of Koli- lenelektro, which has melted and a suitable temperature, which is reached by regulating the current, iron ore in the form of pieces or bri chains is added in order to obtain the desired carbon content. Then the carbon electrodes are replaced by ferroelirom electrodes.
If the temperature in the metal bath becomes too high after the electrode has melted, ferrochrome, iron or other suitable additive which absorbs heat and lowers the temperature is introduced directly into the bath.
The method according to the present invention can also be carried out in a Sieinens-Martin furnace which is provided with a device for feeding the electrodes.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH109524T | 1923-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH109524A true CH109524A (en) | 1925-04-01 |
Family
ID=4368535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH109524D CH109524A (en) | 1923-08-28 | 1923-08-28 | Process for the production of stainless iron. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH109524A (en) |
-
1923
- 1923-08-28 CH CH109524D patent/CH109524A/en unknown
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