DE582323C - Hard alloy for work equipment and tools - Google Patents

Hard alloy for work equipment and tools

Info

Publication number
DE582323C
DE582323C DE1930582323D DE582323DD DE582323C DE 582323 C DE582323 C DE 582323C DE 1930582323 D DE1930582323 D DE 1930582323D DE 582323D D DE582323D D DE 582323DD DE 582323 C DE582323 C DE 582323C
Authority
DE
Germany
Prior art keywords
tools
hard alloy
alloy
work equipment
titanium
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
DE1930582323D
Other languages
German (de)
Inventor
Dipl-Ing Curt Agte
Dr Kurt Moers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Krupp Stahl AG
Original Assignee
Krupp Stahl AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Krupp Stahl AG filed Critical Krupp Stahl AG
Application granted granted Critical
Publication of DE582323C publication Critical patent/DE582323C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/58007Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on refractory metal nitrides
    • C04B35/58014Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on refractory metal nitrides based on titanium nitrides, e.g. TiAlON
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/5607Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides
    • C04B35/5611Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides based on titanium carbides
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C29/00Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides

Description

Harte Legierung für Arbeitsgeräte und Werkzeuge Die Carbide hochschmelzender Metalle sind bekanntlich außerordentlich hart; einige von ihnen, wie z. B. das Wolframcarbid, kommen der Härte des Diamanten sehr nahe. Derartige Carbide bilden daher auch den Hauptbestandteil der unter der Bezeichnung Hartmetall oder Hartmetallegierung in immer steigenderem Maße zur Herstellung von Werkzeugen und Arbeitsgeräten benutzten Werkstoffe.Hard alloy for work equipment and tools The carbides have a higher melting point Metals are known to be extremely hard; some of them, such as B. the tungsten carbide, come very close to the hardness of the diamond. Such carbides therefore also form the Main component of the under the name hard metal or hard metal alloy in used increasingly for the manufacture of tools and implements Materials.

Die Erfindung besteht nun in der Feststellung, daß auch eine Legierung aus einem gesinterten oder geschmolzenen Gemisch von Titancarbid und Titannitrid zu einem ungewöhnlich harten und gleichzeitig auch sehr festen Erzeugnis führt, das ebenfalls zur Herstellung von Arbeitsgeräten und Werkzeugen aller Art, insbesondere aber auch Schneidwerkzeugen, sehr geeignet ist. Ein besonderer Vorteil der neuen Legierung besteht darin., daß Titanverbindungen, welche zur Herstellung von Titancarbid und Titannitrid dienen können, in reichlichen Mengen beim Hochofenbetrieb als Schlackenbestandteil abfallen, so daß die Grundstoffe der neuen Legierung sehr bequem und billig beschafft werden können. Bekannt sind die sog. Hochofenwürfel, die nach W ö h Le r (vgl. hierzu die Nachrichten von der Gesellschaft der Wissenschaften zu Göttingen aus dem Jahre 1927, S. 39o) die Zusammensetzung haben: Ti 77,26%, C 3;6q.%, N 18,3o%, Graphit o,92%. Als besonders vorteilhaft hat sich auch eine solche Legierung erwiesen, die zu j e etwa 5 o % aus Titancarbid -und Titannitrid besteht. Eine solche Legierung hat übrigens, wie festgestellt wurde, nicht nur einen den Schmelzpunkt des, Titannitrides (etwa 295o° C) und Titancarbides (etwa 3140'C) übersteigenden Schmelzpunkt von etwa 323o° C, sondern sogar innerhalb der möglichen Legierungsreihe aus Titancarbid und Titannitrid den höchsten Schmelzpunkt. Dieser Umstand dürfte wahrscheinlich die besonders hohe Härte dieser zu je 5o%, aus Titancarbid und Titannitrid bestehenden Legierung begründen.-Die neue Legierung kann sowohl durch Schmelzen als auch durch Pressen und nachfolgendes Sintern oder aber auch gleichzeitiges Pressen und Sintern der pulverförmigen Ausgangsstoffe hergestellt werden. Eine Verbesserung der Zähigkeit der neuen Legierung läßt sich erreichen, wenn dieser ein oder mehrere leichter schmelzende Hilfsmetalle, wie beispielsweise Kobalt, Eisen oder Nickel, in Mengen bis zu 25% hinzugefügt werden.The invention now consists in the finding that an alloy from a sintered or molten mixture of titanium carbide and titanium nitride leads to an unusually hard and at the same time very strong product, also for the production of work equipment and tools of all kinds, in particular but also cutting tools, is very suitable. A particular advantage of the new Alloy consists in that titanium compounds, which are used for the production of titanium carbide and titanium nitride can serve, in abundant quantities, as a constituent of the slag in blast furnace operation fall off, so that the raw materials of the new alloy can be obtained very conveniently and cheaply can be. The so-called blast furnace cubes, which according to W ö h Le r (cf. the news from the Society of Sciences in Göttingen from 1927, p. 39o) have the composition: Ti 77.26%, C 3; 6q.%, N 18.3o%, graphite o, 92%. Such an alloy has also proven to be particularly advantageous which each about 5 o% consists of titanium carbide and titanium nitride. Such an alloy Incidentally, as has been established, not only has the melting point of titanium nitride (about 295o ° C) and titanium carbides (about 3140'C) exceeding melting point of about 323o ° C, but even within the possible alloy series made of titanium carbide and Titanium nitride has the highest melting point. This circumstance is likely to be the Particularly high hardness of these consisting of 5o% each, consisting of titanium carbide and titanium nitride Establish alloy.-The new alloy can be made by melting as well as by Pressing and subsequent sintering or simultaneous pressing and sintering the powdery starting materials are produced. An improvement in toughness the new alloy can be achieved if this one or more more easily melting Auxiliary metals, such as cobalt, iron or nickel, in quantities of up to 25% to be added.

Ein zweckmäßiges Ausführungsbeispiel ist das folgende.A convenient embodiment, the f he following.

Es wird von einem Pulvergemisch. von 50% Titannitrid und 5o% Titancarbid ausgegangen. Reines Titannitrid kann durch kurzes Erhitzen des käuflichen Produktes im Kohlerohrofen bei 2ooo° C unter Stickstoffspülung, reines Titancarbid ebenfalls durch kurzes Glühen eines Titansäurekohlegemisches im Wasserstoffstrom bei 2ooo° C gewonnen werden. Aus der Mischung des fein gepulverten Glühproduktes werden Formstücke gepreßt, die bei 2¢oo° C auf Kohleunterlage (unter Stickstoffspülung) hochgesintert werden. Hierdurch erlangen sie .eine-außerordentliche Härte.It is made from a powder mix. of 50% titanium nitride and 5o% titanium carbide went out. Pure titanium nitride can be obtained by briefly heating the commercially available Product in a coal tube furnace at 2ooo ° C with nitrogen flushing, pure titanium carbide also by briefly glowing a mixture of titanic acid and carbon in a stream of hydrogen can be obtained at 2ooo ° C. From the mixture of the finely powdered glow product molded pieces are pressed, which are placed on a carbon base at 2 ¢ oo ° C (with nitrogen flushing) be sintered up. This gives them an extraordinary hardness.

Durch den Zusatz eines Hilfsmetalls, beispielsweise 7 bis i o % Kobalt, kann nicht nur die Zähigkeit der fertigen Legierung verbessert, sondern auch in bekannter Weise die Sintertemperatur erniedrigt werden. Man kann auch in bekannter Weise erst eine Vorsinterung bei niedrigeren Temperaturen vornehmen, sodann die Formgebung der in diesein Zustande noch" gut bearbeitbaren Preßlinge anschließen und dem Produkt danrX durch nachfolgendes Hochsintern die hohe Härte und Festigkeit verleihen.By adding an auxiliary metal, for example 7 to 10% cobalt, can not only improve the toughness of the finished alloy, but also in known way the sintering temperature can be lowered. One can also be known in Way, make a pre-sintering at lower temperatures, then the Shaping of the compacts, which are still "easy to process" in this state, are connected and the product danrX the high hardness and strength due to subsequent high sintering to lend.

Claims (2)

PATRNTANSPRÜCHR: i. Harte Legierung für Arbeitsgeräte und Werkzeuge; bestehend aus einem gesinterten oder geschmolzenen Gemisch von je etwa 5o% Titancarbid und Titan-' nitrid. PATENT CLAIM: i. Hard alloy for work implements and tools; consisting of a sintered or molten mixture of about 5o% titanium carbide each and titanium nitride. 2. Harte Legierung für Arbeitsgeräte und Werkzeuge, bestehend aus üinem gesinterten oder geschmolzenen Gemisch von Titancarbid und Titannitrid, vorzugsweise zu gleichen Teilen, und leichter schmelzenden Hilfsmetallen, beispielsweise Kobalt, Eisen oder Nickel, in Mengen bis zu 25%.2. Hard alloy for implements and tools, consisting of from a sintered or molten mixture of titanium carbide and titanium nitride, preferably in equal parts, and more easily melting auxiliary metals, for example Cobalt, iron or nickel, in amounts up to 25%.
DE1930582323D 1930-06-17 1930-06-17 Hard alloy for work equipment and tools Expired DE582323C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE582323T 1930-06-17

Publications (1)

Publication Number Publication Date
DE582323C true DE582323C (en) 1933-08-12

Family

ID=6571263

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930582323D Expired DE582323C (en) 1930-06-17 1930-06-17 Hard alloy for work equipment and tools

Country Status (1)

Country Link
DE (1) DE582323C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976817C (en) * 1944-12-05 1964-05-06 Carl Dr Schusterius Use of a sintered alloy for machine parts with high working temperatures in internal combustion engines
JPS5010711A (en) * 1973-06-04 1975-02-04

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976817C (en) * 1944-12-05 1964-05-06 Carl Dr Schusterius Use of a sintered alloy for machine parts with high working temperatures in internal combustion engines
JPS5010711A (en) * 1973-06-04 1975-02-04

Similar Documents

Publication Publication Date Title
AT149652B (en) Process for the production of carbides, carbonitrides, nitrides, borides, silicides and titanides, especially for hard alloys.
DE582323C (en) Hard alloy for work equipment and tools
US1895959A (en) Hard alloys
AT130626B (en) Hard alloy for implements and tools.
US2124020A (en) Metal alloy
DE622347C (en) Process for the production of hard metal alloys for work equipment and tools from tungsten carbide and an additional auxiliary metal
DE420689C (en) Sintered hard metal alloy and process for their manufacture
AT135669B (en) Process for the production of highly acid-resistant moldings.
CH155831A (en) Hard alloy for work equipment and tools.
DE659917C (en) Sintered hard metal alloys
DE687397C (en)
US2171391A (en) Process of producing hard materials
CH637099A5 (en) Superhard mixed material
DE588911C (en) Sintered hard metal alloy containing boron carbide for work equipment and tools and processes for their manufacture
DE687398C (en)
DE709952C (en) Process for making tools from hard powders
AT247891B (en) Metal powder mixture based on a high-speed steel alloy with the addition of hard materials for the powder-metallurgical production of cutting tools
AT155555B (en) Hard alloy.
DE688389C (en) Work equipment and tools
DE720357C (en) Process for the production of hard bodies
DE765479C (en) Hard and tough alloy
DE819458C (en) Alloy for the production of welding electrodes for resistance welding
US1973441A (en) Hard alloys
US2944893A (en) Method for producing tool steels containing titanium carbide
US1737255A (en) Hard alloy and process of manufacturing the same