DE922278C - Process for the production of hard, wear-resistant bodies - Google Patents

Process for the production of hard, wear-resistant bodies

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Publication number
DE922278C
DE922278C DEP6411D DEP0006411D DE922278C DE 922278 C DE922278 C DE 922278C DE P6411 D DEP6411 D DE P6411D DE P0006411 D DEP0006411 D DE P0006411D DE 922278 C DE922278 C DE 922278C
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DE
Germany
Prior art keywords
addition
iron
pressing
powder
hard
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
Application number
DEP6411D
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German (de)
Inventor
Heinrich Dipl-Ing Spodig
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to DEP6411D priority Critical patent/DE922278C/en
Application granted granted Critical
Publication of DE922278C publication Critical patent/DE922278C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0026—Matrix based on Ni, Co, Cr or alloys thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Conductive Materials (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Powder Metallurgy (AREA)

Description

Verfahren zur Herstellung von harten verschleißfesten Körpern Die Erfindung beruht in der Grundlage darauf, daß ein an sich als wertvoll erkannter, aber in der Verbindung und Verfestigung schwierig zu behandelnder Werkstoff synthetisch, und zwar gleich in der gewünschten Form und Festigkeit hergestellt wird,. Es wird ein reines Aluminiumpulver mit einem Eisenoxydpulver in stöchiometrisch errechneten, genau -dosierten Mengen innig, möglichst vollkommen gleichmäßig gemischt, in der Fertigform entsprechende Formen eingebracht und danach in neutraler Atmosphäre unter höheren Drücken geglüht. Hierbei geht das Gemisch von Aluminiumoxyd und Eisenoxyd: nach der Formel 2 AI +Fe2 03 = A12 03 -I- 2 Fe in Kor.und mit einer Eisenbeimengung über. Der Körper besitzt je nach den benutzten Temperaturen und Drücken sehr hohe Festi,gkelten und eine sehr gute Schichtfähigkeit. Als Drehling verarbeitet und mit den entsprechenden Schnittwinkeln versehen, nutzt er sich auch bei der Bearbeitung sehr harter Werkstoffe praktisch kaum ab. Die solcher Werkzeuge ist sehr hoch, ebenso ist die Zähigkeit und Druckfestigkeit besser als bei rein keramischen Erzeugnissen. Solche nach diesem Verfahren hergestellten Werkzeuge sind infolge ihrer sehr hohen Verschleißfestigkeit ein sehr guter und, billiger Austanschstoff für Hartmetalle und: sonstige Schneidlegierungen. Man kann nun diese Festigkeits- und sonstigen günstigen Eigenschaften der neuen Körper noch durch Zusätze, insbesondere geringfügige Zusätze von Metallen, z. B. von Spuren von Mn, Ti, Fe, Ni, Cu u. a., wesentlich variieren. Man kann z. B. den Zähigkeitsgrad bzw. den Verfestigungsgrad dadurch- erhöhen, weiter kann man die elektrische Leitfähigkeit für Kontaktmaterial aus diesen Stoffen erhöhen. Auch bildet sich .durch einen Zusatz von Siliziumoxyd, z. B. 10% Si 02, eine leichtflüssige Schlacke an der Oberfläche unter günstiger Beeinflussung des ganzen strukturellen Aufbaus und eine bessere Konsistenz der sich bildenden Werkstoffe. Ein Zusatz von Kohlenstoff oder von aufkohlenden Mitteln ergibt ein Aufkohlen des neben den Korund ,anfallenden reinen Eisens zur Bildung von Eisenkarbid und damit eine weitere Verbesserung der Festigkeitseigenschaften.Process for the production of hard, wear-resistant bodies The invention is based on the fact that a material which is recognized as valuable in itself but which is difficult to treat in terms of connection and solidification is produced synthetically, namely immediately in the desired shape and strength. A pure aluminum powder is intimately mixed with an iron oxide powder in stoichiometrically calculated, precisely dosed amounts, as completely as possible, appropriate shapes are placed in the finished form and then annealed in a neutral atmosphere under higher pressures. Here, the mixture of aluminum oxide and iron oxide: according to the formula 2 Al + Fe2 03 = A12 03 -I- 2 Fe in cor. And with an admixture of iron. Depending on the temperatures and pressures used, the body has very high strengths and a very good layering ability. Processed as a lathe and provided with the appropriate cutting angles, it practically hardly wears off, even when machining very hard materials. The tools used in this way are very high, and their toughness and compressive strength are also better than those of purely ceramic products. Such tools produced by this process are, due to their very high wear resistance, a very good and inexpensive substitute for hard metals and other cutting alloys. You can now these strength and other favorable properties of the new body by additives, especially minor additions of metals, such. B. of traces of Mn, Ti, Fe, Ni, Cu, etc., vary significantly. You can z. B. thereby increase the degree of toughness or the degree of solidification, you can also increase the electrical conductivity for contact material made of these substances. Also forms .by an addition of silicon oxide, e.g. B. 10% Si 02, a slightly liquid slag on the surface with a favorable influence on the entire structural structure and a better consistency of the materials being formed. An addition of carbon or of carburizing agents results in a carburization of the pure iron, which is obtained in addition to the corundum, to form iron carbide and thus a further improvement in the strength properties.

Selbstverständlich ist es auch möglich, die nach -diesem Verfahren hergestellten Körper einer erneuten Pulverisierung und folgenden Verpressung mit oder ohne einem B.indemittelzusatz zu unterwerfen bzw. durch Sintern zu einem einheitlichen Körper zusammenzubringen. Die Formlinge können vor dem Pressen eine Eisen- oder Metallgrundlage, z. B. durch Fe- oder Cu-Pulver, erhalten, mittels welcher ein späteres Aufschweißen oder Auflöten auf Drehlinge, Stahlhalter od. dgl. ermöglicht wird.Of course, it is also possible to use this method produced body with a renewed pulverization and subsequent compression or without submitting a binder additive or by sintering to a uniform Bringing bodies together. The moldings can be iron or before pressing Metal base, e.g. B. by Fe or Cu powder, by means of which a later Welding or soldering onto rotors, steel holders or the like. Is made possible.

Claims (7)

PATENTANSPRÜCHE: i. Verfahren zum Herstellen von sehr harten hoch verschleißfesten Körpern; z. B. von Werkzeugen, durch Pressen und Glühen von gepulvertem Aluminium und Eisenoxyd in stöchiometzischer Verteilung und Umsetzung nach der Formel 2 Al -h Fee 03 = A12 03 -f- Fe. PATENT CLAIMS: i. Process for producing very hard high wear-resistant bodies; z. B. of tools, by pressing and annealing of powdered Aluminum and iron oxide in stoichiometric distribution and conversion according to the formula 2 Al -h Fee 03 = A12 03 -f- Fe. 2. Verfahren nach Anspruch i, gekennzeichnet durch Zusätze, insbesondere geringfügige Zusätze, von Metallen, z. B. von Mn, Co, Ti, Cu u. a. 2. The method according to claim i, characterized by Additions, especially minor additives, of metals, e.g. B. of Mn, Co, Ti, Cu et al. 3. Verfahren nach Anspruch i oder 2, gekennzeichnet durch einen geringen Zusatz von guten elektrischen Metalleitern, insbesondere in Pulverform. 3. The method according to claim i or 2, characterized by a low Addition of good electrical metal conductors, especially in powder form. 4. Verfahren nach Anspruch 1, 2 oder 3, gekennzeichnet durch einen Zusatz von Si 02 oder von SI 02 haltigen Stoffen zur höheren Verdichtung und Verfestigung. 4. Procedure according to claim 1, 2 or 3, characterized by an addition of Si 02 or of Materials containing SI 02 for higher compaction and consolidation. 5. Verfahren nach Anspruch 1, 2, 3 oder 4, gekennzeichnet durch Zusatz von Kohlenstoff oder aufkohlenden Mitteln zur Überführung des sich bildenden Fe in Eisenkarbid (F3 C) und damit zu einer weiteren Verbesserung der Festigkeitseigenschaften. 5. Procedure according to Claim 1, 2, 3 or 4, characterized by the addition of carbon or carburizing Means for converting the Fe formed into iron carbide (F3 C) and thus to a further improvement of the strength properties. 6. Verfahren nach Anspruch 1, 2, 3, 4 oder 5, dadurch gekennzeichnet, fdaß die nach diesen Ansprüchen .gebildeten Körper nachträglich erneut in: Pulverform übergeführt und: mit oder ohne Bindemittel zu Formlingen verpreßt oder gesintert werden. 6. The method according to claim 1, 2, 3, 4 or 5, characterized in that the .formed according to these claims Body subsequently converted again into: powder form and: with or without binding agent pressed or sintered to form blanks. 7. Verfahren nach Anspruch 1, 2, 3, 4, 5 oder 6, dadurch gekennzeichnet, daß die Formlinge vor dem Pressen eine Eisen- oder Metallgrundlage, z. B. durch Fe- oder Cu-Pulver erhalten, mittels welcher eire späteres Aufschweißen oder Auflöten auf Drehlinge, Stahlhalter od. d@gl. ermöglicht wird. Angezogene Druckschriften: Deutsche Patentschriften Nr. 687 397, 639 257; Hückel, Lehrbuch der gChemie, Teil 1, 1943, S.496.7. The method according to claim 1, 2, 3, 4, 5 or 6, characterized in that the moldings prior to pressing an iron or metal base, for. B. obtained by Fe or Cu powder, by means of which eire later welding or soldering on rotors, steel holders od. D @ gl. is made possible. Cited publications: German Patent Nos. 687 397, 639 257; Hückel, Textbook of Chemistry, Part 1, 1943, p.496.
DEP6411D 1943-06-05 1943-06-05 Process for the production of hard, wear-resistant bodies Expired DE922278C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP6411D DE922278C (en) 1943-06-05 1943-06-05 Process for the production of hard, wear-resistant bodies

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Application Number Priority Date Filing Date Title
DEP6411D DE922278C (en) 1943-06-05 1943-06-05 Process for the production of hard, wear-resistant bodies

Publications (1)

Publication Number Publication Date
DE922278C true DE922278C (en) 1955-01-13

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052294B (en) * 1954-08-02 1959-03-05 Carborundum Co Process for producing wear-resistant molded articles
US2982014A (en) * 1955-05-20 1961-05-02 Meyer-Hartwig Eberhard Process of manufacturing ceramic compounds and metallic ceramic compounds
DE1284628B (en) * 1961-06-15 1968-12-05 Deventer Werke Gmbh Process for the production of metal-ceramic materials
DE1671126B1 (en) * 1964-08-14 1971-04-01 Union Carbide Corp Process for the production of lamellar refractory structures
DE19611306A1 (en) * 1996-03-22 1997-09-25 Agni Waerme Und Werkstofftechn Porous electrically conducting composite material production

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE639257C (en) * 1934-05-18 1936-12-02 Patra Patent Treuhand Process for the production of cutting tools for glass u. like
DE687397C (en) * 1937-06-22 1940-01-29 Fried Krupp Akt Ges

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE639257C (en) * 1934-05-18 1936-12-02 Patra Patent Treuhand Process for the production of cutting tools for glass u. like
DE687397C (en) * 1937-06-22 1940-01-29 Fried Krupp Akt Ges

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052294B (en) * 1954-08-02 1959-03-05 Carborundum Co Process for producing wear-resistant molded articles
US2982014A (en) * 1955-05-20 1961-05-02 Meyer-Hartwig Eberhard Process of manufacturing ceramic compounds and metallic ceramic compounds
DE1284628B (en) * 1961-06-15 1968-12-05 Deventer Werke Gmbh Process for the production of metal-ceramic materials
DE1671126B1 (en) * 1964-08-14 1971-04-01 Union Carbide Corp Process for the production of lamellar refractory structures
DE19611306A1 (en) * 1996-03-22 1997-09-25 Agni Waerme Und Werkstofftechn Porous electrically conducting composite material production

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