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AT150991B - Steel alloy for hot work tools and similar items requiring high temperature strength. - Google Patents

Steel alloy for hot work tools and similar items requiring high temperature strength.

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Publication number
AT150991B
AT150991B AT150991DA AT150991B AT 150991 B AT150991 B AT 150991B AT 150991D A AT150991D A AT 150991DA AT 150991 B AT150991 B AT 150991B
Authority
AT
Austria
Prior art keywords
high temperature
steel alloy
temperature strength
work tools
hot work
Prior art date
Application number
Other languages
German (de)
Inventor
Friedrich Dr Neuwirth
Edgar V Schwarzer
Original Assignee
Oesterr Alpine Montan
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 Oesterr Alpine Montan filed Critical Oesterr Alpine Montan
Application granted granted Critical
Publication of AT150991B publication Critical patent/AT150991B/en

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Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
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   Eingehende Versuche haben nun gezeigt, dass nicht der Chromzusatz der Warmfestigkeit der
Stähle schädlich ist, sondern dass ein hoher Nickelgehalt die Warmfestigkeit der Stähle schädigt. 



   Diese Beobachtung deckt sich auch mit einer ähnlichen Beobachtung auf einem ähnlichen Stahlver-   wendungsgebiete, nämlich   der   Schusswaffenerzeugung.   Es wurde bereits durch Versuche, die in grossem Massstabe durchgeführt wurden, die Beobachtung gemacht, dass ein Nickelgehalt die Leistung von Schusswaffen ungünstig beeinflusst, da nickelhältige Schusswaffenläufe durch Kalibererweiterungen frühzeitig unbrauchbar werden. Ähnliche Beobachtungen konnten an Warmarbeitsstählen gemacht werden. Versuche an solchen Stählen verschiedener Zusammensetzung sowie an Warmwerkzeugen, welche aus diesen Stählen hergestellt sind, haben gezeigt, dass es für die Warmfestigkeit solcher Stähle und Werkzeuge von Bedeutung ist, wenn sowohl der Chrom-als auch insbesondere der Nickelgehalt nicht zu hoch sind.

   Besonders gute Ergebnisse werden erzielt, wenn der Chromgehalt zum Nickel- gehalt angenähert im Verhältnis 2 : 1 steht, wobei der Nickelgehalt   0-3-1%   beträgt. Vollkommen nickelfreie Stähle haben sich in der Warmfestigkeit als ungünstiger erwiesen als nickelhaltige. 



  Als besonders günstig haben sich Stähle folgender Zusammensetzung   gezeigt: C = 0#30-0#60,  
Cr = 1-00-1-60, Ni   = 0. 50--0'80,   W =   4. 30--4. 60,   V = etwa 0-25, Co =   3-50-4-00%.   



   Diesen Stählen kann noch zur weiteren Erhöhung der Warmfestigkeit ein Molybdän-oder Titan- zusatz gegeben werden, ebenso kann zur Erhöhung der Warmfestigkeit der Siliziumgehalt gesteigert werden. 

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



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   In-depth tests have now shown that the addition of chromium does not affect the heat resistance of the
Steels, but that a high nickel content damages the high temperature strength of the steels.



   This observation also coincides with a similar observation in a similar steel application area, namely the manufacture of firearms. It has already been observed through experiments that have been carried out on a large scale that a nickel content has an unfavorable effect on the performance of firearms, since nickel-containing firearm barrels become unusable at an early stage due to caliber extensions. Similar observations could be made on hot-work steels. Tests on such steels of various compositions and on hot tools made from these steels have shown that it is important for the high temperature strength of such steels and tools if both the chromium and, in particular, the nickel content are not too high.

   Particularly good results are achieved when the chromium content to the nickel content is approximately 2: 1, the nickel content being 0-3-1%. Completely nickel-free steels have proven to be less favorable than nickel-containing steels in terms of heat resistance.



  Steels of the following composition have proven to be particularly favorable: C = 0 # 30-0 # 60,
Cr = 1-00-1-60, Ni = 0. 50-0'80, W = 4. 30-4. 60, V = about 0-25, Co = 3-50-4-00%.



   Molybdenum or titanium can be added to these steels to further increase the high-temperature strength;

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

 

Claims (1)

PATENT-ANSPRUCH : Stahllegierung für Warmarbeitswerkzeuge und ähnliche Warmfestigkeit erfordernde Gegen- stände, die ausser 0. 3% Kohlenstoff, 0-6-2% Chrom, 4-5% Wolfram, etwa 0-25% Vanadin und 3--4% Kobalt noch Nickel enthält, sowie gegebenenfalls Silizium in einem für warmfeste Stähle üblichen erhöhten Ausmasse und zur Erhöhung der Warmfestigkeit übliche Zusätze von Molybdän oder Titan, gekennzeichnet durch einen Nickelgehalt von 0-3-1%, wobei das Verhältnis Chrom zu Nickel 2 : 1 beträgt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Steel alloy for hot work tools and objects requiring similar high temperature resistance, which, in addition to 0.3% carbon, 0-6-2% chromium, 4-5% tungsten, about 0-25% vanadium and 3-4% cobalt, also contains nickel, and optionally silicon in an increased amount customary for heat-resistant steels and customary additions of molybdenum or titanium to increase the heat resistance, characterized by a nickel content of 0-3-1%, the ratio of chromium to Nickel is 2: 1. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT150991D 1936-05-14 1936-05-14 Steel alloy for hot work tools and similar items requiring high temperature strength. AT150991B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT150991T 1936-05-14

Publications (1)

Publication Number Publication Date
AT150991B true AT150991B (en) 1937-10-11

Family

ID=3646415

Family Applications (1)

Application Number Title Priority Date Filing Date
AT150991D AT150991B (en) 1936-05-14 1936-05-14 Steel alloy for hot work tools and similar items requiring high temperature strength.

Country Status (1)

Country Link
AT (1) AT150991B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117139514A (en) * 2023-09-14 2023-12-01 江南大学 Tandem spiral wire forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117139514A (en) * 2023-09-14 2023-12-01 江南大学 Tandem spiral wire forming apparatus
CN117139514B (en) * 2023-09-14 2024-07-16 江南大学 Tandem spiral wire forming apparatus

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