DE411268C - Process for refining high silicon iron and steel - Google Patents
Process for refining high silicon iron and steelInfo
- Publication number
- DE411268C DE411268C DED43683D DED0043683D DE411268C DE 411268 C DE411268 C DE 411268C DE D43683 D DED43683 D DE D43683D DE D0043683 D DED0043683 D DE D0043683D DE 411268 C DE411268 C DE 411268C
- Authority
- DE
- Germany
- Prior art keywords
- steel
- high silicon
- refining high
- silicon iron
- iron
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1227—Warm rolling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
Description
Verfahren zum Verfeinern hochsiliciumhaltigen Eisens und Stahls. Es ist bekannt, daß Eisensilicium-Legierungen mit einem etwa ,f Prozent übersteigenden Siliciumgehalt so spröde sind, daß sie eine Verfeinerung durch Kaltverarbeitung nicht vertragen. Das Band reißt (beispielsweise beim Kaltwalzen) auf, und der Draht bricht (beispielsweise beim Ziehen) ab. Eine Veiarbeitung bei hohen Temperaturen (z. B. Rotglut), die an sich zwar möglich wäre, ist vielfach aus dem Grunde nicht angängig, weil das Gut hierbei oxydiert und daher die Erzielung einer spiegelblanken, puren- und rissefreien Oberfläche nicht möglich ist. Das gilt namentlich für die Herstellung hochsilicierten Eisens und Stahls in Form sogenannter »endlosere. und dünner (etwa i,5 mm und dünnerer) Bänder sowie dünner (etwa 5 mm und dünnerer) Drähte.Process for refining high silicon iron and steel. It it is known that iron-silicon alloys with a. f percent exceeding Silicon contents are so brittle that they can be refined by cold working not tolerated. The tape tears (for example during cold rolling), and so does the wire breaks off (for example when pulling). Processing at high temperatures (e.g. red heat), which in itself would be possible, is often not for the reason acceptable, because the material is oxidized and therefore the achievement of a mirror-like, A pure and crack-free surface is not possible. This is especially true for the Manufacture of highly siliconized iron and steel in the form of so-called »endless ones. and thin (about 1.5 mm and thinner) ribbons and thin (about 5 mm and thinner) wires.
Diese Schwierigkeiten werden erfindungsgemäß dadurch überwunden, da(.; ie Lel;ierunri bei Raumtemperatur nur ui wesentlich überschreitenden Wärmegraden verarbeitet, beispielsweise ausgewalzt bzw. gezogen, wird. Hierzu genügen je nach der Höhe des Siliciumgehaltes Temperaturen von etwa 5o bis 25ö t'. Bei derartig niedrigen Temperaturen ist die Gefahr einer Verzundcrung der Oberlhichc nicht vorhanden. Gegenüber einer bei Temperaturen, wie sie beim Warmwalzen üblich sind, vorgenommenen Formgebung besitzt das neue Verfahren den Vc;r;:::#;, cln#) infolge der Verforrnuny bei niedrigen Temperaturen eine wciteheocle Verfeinerung und Vereinheitlichung des Gefüges vor sich geht, die eine tiefgreifende Verbesserung wichtiger physikalischer Eigenschaften zur Folge hat. Ein weiterer wesentlicher Vorzug ist darin zu erblicken, daß die nach dem geschilderten Verfahren hergestellten Bänder, Tafeln, Drähte und Stangen sich mit weitaus größerer Sicherheit auf die gewünschten genauen Abmessungen bringen lassen, als das bei warmgewalztem Gut der Fall ist, ein Umstand, der für die praktische Anwendbarkeit dieser Legierung in vielen Fällen von ausschlaggebender Bedeutung ist.According to the invention, these difficulties are overcome because (.; The temperature at room temperature is only much higher than the temperature processed, for example rolled out or drawn, is. Sufficient for this, depending on the level of the silicon content temperatures of about 5o to 25ö t '. With such At low temperatures, there is no risk of scaling of the surface. Compared to one made at temperatures that are customary in hot rolling Shaping, the new process has the Vc; r; ::: # ;, cln #) as a result of the deformation at low temperatures a wciteheocle refinement and unification of the Texture is going on, which is a profound improvement in important physical Properties. Another essential advantage is to be seen in that the tapes, panels, wires and manufactured by the process described Rods themselves to the exact dimensions desired with far greater certainty than is the case with hot-rolled goods, a circumstance which is important for the practicality of this alloy in many cases is crucial Meaning is.
Die Erwärmung des Gutes auf die erforderliche Verarbeitungstemperatur von 5o bis 25o° kann auf verschiedene Weise erfolgen, beispielsweise durch einen Kasten, der in unmittelbarer Nähe der Arbeitsmaschine bzw. ihres Werkzeuges aufgestellt ist und durch Kohle, Gas, Elektrizität o. dgl. geheizt wird. Äul.ierst einfach gestaltet sich die Erw ärmung durch Verwendung von Flüssigkeitsbädern (Wasser, 01, leicht schmelzbaren Salzgemischen oder Metallegierungen o. d"1.). die in Behältern, wclclie in unmittelbarer Nähe der Arbeitsmaschinen angeordnet sind, auf zweckentsprechende Weise auf die erforderliche Tcinpcratur gebracht werden. 1)i(- Wirkung der erwiihnten Wä rmvorrichtungen liu3t sich noch dadurch erhöhen, daß d:c nii, dein zu verarbeitenden Gute in Berührting kommenden Teile der Arbeitsniaschine, bci@piclsweisc iin Falle der Vcrarbeitung durch Kaltwalzen, die '\ValzenfUihrungc@n und Walzen oder im--halle der Verarbeitung durch Ziehen das Zieheisen und die Ziehscheibe##gleichfalls- auf@-die obengenannten Temperaturen erwärmt werden.The goods can be heated to the required processing temperature of 50 to 25o ° in various ways, for example by means of a box that is set up in the immediate vicinity of the machine or its tool and is heated by coal, gas, electricity or the like. The warming is usually very simple by using liquid baths (water, oil , easily fusible salt mixtures or metal alloys, etc.), which are arranged in containers, wclclie in the immediate vicinity of the working machines, in an appropriate manner in the required manner 1) The effect of the heating devices mentioned can be further increased by the fact that the goods to be processed come into contact with parts of the working machine, or in the case of processing by cold rolling, the '\ Roller guides and rollers or - in the processing hall by pulling - the drawing iron and the drawing disk ## likewise - are heated to the above-mentioned temperatures.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED43683D DE411268C (en) | 1923-05-18 | 1923-05-18 | Process for refining high silicon iron and steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED43683D DE411268C (en) | 1923-05-18 | 1923-05-18 | Process for refining high silicon iron and steel |
Publications (1)
Publication Number | Publication Date |
---|---|
DE411268C true DE411268C (en) | 1925-06-27 |
Family
ID=7047783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED43683D Expired DE411268C (en) | 1923-05-18 | 1923-05-18 | Process for refining high silicon iron and steel |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE411268C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE946629C (en) * | 1944-06-03 | 1956-08-02 | Pee Wee Maschinen Und Appbau I | Process for preheating of steel workpieces to be threaded and a device for carrying out the process |
DE967540C (en) * | 1950-08-19 | 1958-03-20 | Erich Schmidt | Ring traveler stretching machine with at least two opposing, revolving punches |
-
1923
- 1923-05-18 DE DED43683D patent/DE411268C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE946629C (en) * | 1944-06-03 | 1956-08-02 | Pee Wee Maschinen Und Appbau I | Process for preheating of steel workpieces to be threaded and a device for carrying out the process |
DE967540C (en) * | 1950-08-19 | 1958-03-20 | Erich Schmidt | Ring traveler stretching machine with at least two opposing, revolving punches |
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