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.Info
- 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
Links
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- Powder Metallurgy (AREA)
Description
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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)
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)
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 |
-
1936
- 1936-05-14 AT AT150991D patent/AT150991B/en active
Cited By (2)
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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