AT107312B - Chromium-manganese steels for the manufacture of objects that require great toughness and resistance to acids, water, air and alkalis. - Google Patents

Chromium-manganese steels for the manufacture of objects that require great toughness and resistance to acids, water, air and alkalis.

Info

Publication number
AT107312B
AT107312B AT107312DA AT107312B AT 107312 B AT107312 B AT 107312B AT 107312D A AT107312D A AT 107312DA AT 107312 B AT107312 B AT 107312B
Authority
AT
Austria
Prior art keywords
chromium
alkalis
acids
objects
air
Prior art date
Application number
Other languages
German (de)
Inventor
Franz Dr Ing Rapatz
Max Baeke
Original Assignee
Max Baeke
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 Max Baeke filed Critical Max Baeke
Application granted granted Critical
Publication of AT107312B publication Critical patent/AT107312B/en

Links

Description

  

   <Desc/Clms Page number 1> 
 



  Chrom-Maganstähle zur Herstellung von Gegenständen, die grosse Zähigkeit und
Widerstandsfähigkeit gegen Säuren, Wasser, Luft und Alkalien erfordern. 



   Für die Herstellung von   korrosionswiderstandsfä. higen Gegenständen   wird hochprozentiger Chromstahl häufig verwendet. 



   Die vorliegende Erfindung betrifft   Chrom-Manganstähle,   die sehr widerstandsfähig gegen die Einwirkungen von Säuren, Wasser, Luft und Alkalien sind und ausserdem   hohe Zähigkeit   besitzen. 



   Es war nicht anzunehmen, dass durch Zusatz von höheren   Mangangehalten   zu   Chromstählen     korrosionssichere   Stähle von besonderen Eigenschaften erzielt werden. Untersuchungen haben nun ergeben, 
 EMI1.1 
 dass es Austenitbildung hervorruft. Die Fähigkeit des   Mangans, Austenitbildung hervorzurufen,   ist dem Metallurgen zwar bekannt, nicht aber, dass dadurch die Widerstandsfähigkeit der Chromstähle gegen chemische Einwirkungen von Säuren, Wasser, Luft und Alkalien begünstigt wird und ausserdem 
 EMI1.2 
 stähle nicht zu erzielen sind. Letztere sind nur im abgeschreckten Zustande, in dem sie martensitisch und spröde sind,   vollkommen widerstandsfähig gegen Rost,   aber in diesem Zustande für viele Zwecke nicht zu verwenden.

   Durch den erhöhten   Manganzusatz   erreicht man, dass die Stähle im abgeschreckten Zustande zähe werden und trotzdem widerstandsfähig sind.   Desgleichen eignen sich solche Stähle auch   fiir   Gegenstände,   die nicht magnetisierbar sein dürfen. 



   Besonders gute Erfolge erzielt man z. B. mit einem Stahl folgender Zusammensetzung: 
 EMI1.3 
 
Ein Vorteil des erhöhten   Manganzusatzes   liegt auch darin, dass ein solcher Stahl besser   sehmiedbar   ist, als reiner Chromstahl. Es ist z. B. ein Stahl mit 0.8% Kohlenstoff, 24% Chrom und 8% Mangan   besser schmiedbar,   als ein Stahl mit 0. 6% Kohlenstoff und   120 Chrom.   



   Diesen Stählen verleiht man die erwähnten Eigenschaften und das austenitische Gefüge dadurch, dass man sie von einer Temperatur von 950-1200  C rasch abkühlt. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Chromium-maganese steels for the manufacture of objects that have great toughness and
Require resistance to acids, water, air and alkalis.



   For the production of corrosion-resistant. High-percentage chrome steel is often used in some objects.



   The present invention relates to chromium-manganese steels, which are very resistant to the effects of acids, water, air and alkalis and also have high toughness.



   It was not to be assumed that the addition of higher manganese contents to chrome steels would result in corrosion-resistant steels with special properties. Investigations have now shown
 EMI1.1
 that it causes austenite formation. The ability of manganese to produce austenite is known to the metallurgist, but not that it improves the resistance of chromium steels to the chemical effects of acids, water, air and alkalis
 EMI1.2
 steels cannot be achieved. The latter are only completely resistant to rust in the quenched condition, in which they are martensitic and brittle, but cannot be used in this condition for many purposes.

   The increased amount of manganese ensures that the steels become tough in the quenched state and are nonetheless resistant. Such steels are also suitable for objects that must not be magnetizable.



   Particularly good results can be achieved e.g. B. with a steel of the following composition:
 EMI1.3
 
An advantage of the increased amount of manganese is that such a steel is easier to simmer than pure chrome steel. It is Z. B. a steel with 0.8% carbon, 24% chromium and 8% manganese is easier to forgive than a steel with 0.6% carbon and 120 chromium.



   These steels are given the properties and austenitic structure mentioned by rapidly cooling them from a temperature of 950-1200 C.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Chrom-Manganstähle zur Herstellung von Gegenständen, die grosse Zähigkeit und Widerstandsfähigkeit gegen Säuren, Wasser, Luft und Alkalien erfordern, dadurch gekennzeichnet, dass sie 0. 4-1% Kohlenstoff, 8-25% Chrom und 20-50 Mangan enthalten und zur Erreichung des austeni- tischen Gefüges von einer Temperatur von 950-1200 C rasch abgekühlt werden. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Chromium-manganese steels for the production of objects that require great toughness and resistance to acids, water, air and alkalis, characterized in that they contain 0.4-1% carbon, 8-25% chromium and 20-50 manganese and to achieve this of the austenitic structure must be rapidly cooled from a temperature of 950-1200 C. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT107312D 1922-11-01 1923-10-17 Chromium-manganese steels for the manufacture of objects that require great toughness and resistance to acids, water, air and alkalis. AT107312B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE107312X 1922-11-01

Publications (1)

Publication Number Publication Date
AT107312B true AT107312B (en) 1927-09-26

Family

ID=5650973

Family Applications (1)

Application Number Title Priority Date Filing Date
AT107312D AT107312B (en) 1922-11-01 1923-10-17 Chromium-manganese steels for the manufacture of objects that require great toughness and resistance to acids, water, air and alkalis.

Country Status (1)

Country Link
AT (1) AT107312B (en)

Similar Documents

Publication Publication Date Title
DE3707871A1 (en) AUSTENITIC STEEL IMPROVED HIGH TEMPERATURE RESISTANCE AND CORROSION RESISTANCE
DE2230864B2 (en) Use of an alloyed cast iron as a material for wear-resistant components
DE2429023A1 (en) STEEL ALLOYS AND THE MOLDED BODIES MADE FROM IT
AT146720B (en) Manufacture of objects that must have special strength properties, in particular high vibration resistance and / or should have high resistance to becoming brittle due to intergranular corrosion.
AT107312B (en) Chromium-manganese steels for the manufacture of objects that require great toughness and resistance to acids, water, air and alkalis.
DE1298390B (en) Balls, lining plates and similar items made of cast steel
DE2634403C2 (en) Stainless alloy steel casting
DE2051609C3 (en) Use of an austenitic stainless steel as a material for the production of welded pressure vessels for cryogenic operation and the production of cold-drawn wire-shaped molded bodies
DE1194587B (en) Use of austenitic steel alloys as a material for welded components that are exposed to attack by seawater and / or marine atmosphere
DE2457089B2 (en) Use of an austenitic-ferritic chromium-nickel-nitrogen steel for the manufacture of objects in the chemical industry
DE2342034B2 (en) Use of a ferritic or ferritic-austenitic steel alloy as a material for the production of objects that are resistant to acid and water mixtures at temperatures of up to 70 degrees C.
AT148135B (en) Manufacture of dovings for briquette presses from austenitic steel alloys.
AT120668B (en) Oxidation and corrosion resistant, malleable nickel chromium steels.
AT249721B (en) Age-hardenable, austenitic chromium-manganese-nickel-steel alloy for the production of objects of high hardness and strength as well as good toughness at room and elevated temperatures
AT278886B (en) Austenitic, stainless steels for the manufacture of valves for internal combustion engines by cold forming
AT135326B (en) Aluminum-chrome steels.
CH115976A (en) Chromium-manganese steel for the manufacture of objects that are resistant to chemical effects.
AT162909B (en) Steel alloys for armor plates with high bullet resistance
AT243296B (en) Austenitic chromium-manganese-nitrogen steels for the manufacture of objects resistant to stress corrosion cracking
AT144000B (en) Steel alloy for objects that are resistant to particularly high pressures, e.g. B. explosion pressures, are stable and at the same time have increased resistance to wear.
DE401779C (en) Process to protect the inner walls of iron hollow bodies or vessels that are exposed to changing temperatures from rust
AT132248B (en) Silicon-containing iron alloy.
AT148124B (en) Manufacture of forged or cast objects, which in the polished state must be absolutely rustproof, alkali-resistant and scale-resistant as well as highly wear-resistant, made of iron alloys containing carbon, chromium, molybdenum and possibly nickel.
AT71693B (en) Iron alloy for items requiring high resistance to corrosion and methods of treating the alloy.
DE541039C (en) Steel alloys with high resistance to attack by acids, to rusting and especially to scaling