DE847912C - Process for the production of iron or steel objects from iron oxides - Google Patents
Process for the production of iron or steel objects from iron oxidesInfo
- Publication number
- DE847912C DE847912C DEM8985A DEM0008985A DE847912C DE 847912 C DE847912 C DE 847912C DE M8985 A DEM8985 A DE M8985A DE M0008985 A DEM0008985 A DE M0008985A DE 847912 C DE847912 C DE 847912C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- production
- temperature
- steel objects
- mixture contains
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Description
Verfahren zur Herstellung von Eisen- oder Stahlgegenständen aus Eisenoxyden Die vorliegende Erfindung behandelt ein Verfahren, poröse oder kompakte Gegenstände aus Stahl, z. B. Bänder, 1)rälite, Profile oder Fertigteile. unter Umgehung des üblichen Herstellungsganges über lloxhofen, Stählwerk und Walzwerk unmittelbar aus Eisenoxyden zu erzeugen. Es sei an der I)lechherstellung als Beispiel beschrieben.Process for making iron or steel objects from iron oxides The present invention is concerned with a method, porous or compact article made of steel, e.g. B. tapes, 1) rälite, profiles or prefabricated parts. bypassing the the usual production process via lloxhofen, steel mill and rolling mill To produce iron oxides. It will be described using the I) lech production as an example.
Erfindungsgemäß wird feinkörniges Eisenoxyd, wie Walzzunder oder bestes Schwedenerz, mit einem Bindemittel gemischt, z. B. mit 2010 eines der bekannten pulverförmigen Kunststoffe. Die Mischung wird in den Spalt eines aus zwei nebeneinander angeordneten Walzen, wie sie beispielsweise für das Walzen von Bändern aus lfetallpuleer bekannt sind, gegeben und zu einem endlosen Band ausgewalzt. Dieses durchläuft einen Sinterofen mit reduzierender Atmosphäre, worin die Reduktion und das Sintern bei 90o bis 120o° stattfinden. Die Reduktion kann dadurch gefördert werden, daß der Mischung Kohlenstoff in Pulverform zugegeben wird.According to the invention, fine-grained iron oxide, such as mill scale or the best Swedish ore mixed with a binder, e.g. B. with 2010 one of the well-known powdered plastics. The mixture is in the gap one of two next to each other arranged rollers, such as those used for rolling strips from lfetallpuleer are known, given and rolled out into an endless band. This goes through you Sintering furnace with a reducing atmosphere, in which the reduction and sintering occur 90o to 120o ° take place. The reduction can be promoted by the Mixture carbon in powder form is added.
Statt der Erhitzung bis auf Sintertemperaturen kann auch eine geringere Erhitzung erfolgen. Es schließt sich dann an die Erhitzung eine Heißverformung z. B. durch Walzen an.Instead of heating up to sintering temperatures, a lower temperature can also be used Heating take place. The heating is then followed by hot deformation z. B. by rolling.
Drähte und Profile gewinnt man aus der angegebenen Mischung durch Walzen oder auch durch Pressen, insbesondere in Strangpressen.Wires and profiles are obtained from the specified mixture Rolling or by pressing, especially in extrusion.
Preßteile, z. B. poröse Lager, werden aus der angegebenen Mischung nach dem für die Herstellung solcher Teile aus Weicheisenpulver bekannten Verfahren hergestellt.Pressed parts, e.g. B. porous bearings are made from the specified mixture according to the method known for the production of such parts from soft iron powder manufactured.
Als Bindemittel haben sich Kunststoff, Teer, Stärkekleister und besonders die Chloride des Eisens bewährt. Die letzteren haben den Vorzug, daß sie zu Fe reduziert werden, so daß keine Fremdstoffe eingebracht werden.Plastic, tar, starch paste and especially have proven to be binding agents the chlorides of iron proven. The latter have the advantage that they are reduced to Fe so that no foreign matter is introduced.
Die Festigkeit der Walz- und Preßteile vor dem Sintern wird wesentlich verbessert und die Formgebung erleichtert, wenn der 1-lischung noch Weicheisenpulver in Mengen von 5 bis ioo/o zugesetzt wird.The strength of the rolled and pressed parts before sintering becomes essential improved and the shaping easier if the 1-mixture was still soft iron powder is added in amounts of 5 to 100 per cent.
Das Verfahren bietet besonders wirtschaftliche Vorteile für die Herstellung von Drähten für Schweißelektroden z. B. aus reinstem Schwedenerz, da diese Drähte einen besonders niedrigen Phosphor-und Schwefelgehalt besitzen müssen, ohne daß die in diesem Fall mit eingebrachte Gangart stört.The process offers particularly economical advantages for production of wires for welding electrodes e.g. B. from the purest Swedish ore, as these wires Must have a particularly low phosphorus and sulfur content without the gait introduced in this case interferes.
Es ist auch möglich, Schweißelektroden ohne Ummantelung bei Anwendung des erfindungsgemäßen Verfahrens herzustellen, wenn man den Eisenoxyden einfache und billige Flußmittel, wie z.13. Wasserglas, hinzufügt. Versuche haben ergeben, daß ein Zusatz von 5 bis ioo/o Wasserglas in Pulverform ausgezeichnete Schweißelektroden ergibt,'die keiner Ummantelung bedürfen.It is also possible to use welding electrodes without a sheath of the process according to the invention, if one simple iron oxides and cheap fluxes such as 13. Water glass, add. Tests have shown that an addition of 5 to 100 / o water glass in powder form excellent welding electrodes results, 'which do not require any sheathing.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM8985A DE847912C (en) | 1951-03-25 | 1951-03-25 | Process for the production of iron or steel objects from iron oxides |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM8985A DE847912C (en) | 1951-03-25 | 1951-03-25 | Process for the production of iron or steel objects from iron oxides |
Publications (1)
Publication Number | Publication Date |
---|---|
DE847912C true DE847912C (en) | 1952-08-28 |
Family
ID=7294451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM8985A Expired DE847912C (en) | 1951-03-25 | 1951-03-25 | Process for the production of iron or steel objects from iron oxides |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE847912C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1202104B (en) * | 1956-09-27 | 1965-09-30 | Boehler & Co Ag Geb | Welding rods for gas melt deposition welding |
-
1951
- 1951-03-25 DE DEM8985A patent/DE847912C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1202104B (en) * | 1956-09-27 | 1965-09-30 | Boehler & Co Ag Geb | Welding rods for gas melt deposition welding |
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