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AT166432B - Steels for hot tools that are exposed to the action of hot workpieces - Google Patents

Steels for hot tools that are exposed to the action of hot workpieces

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Publication number
AT166432B
AT166432B AT166432DA AT166432B AT 166432 B AT166432 B AT 166432B AT 166432D A AT166432D A AT 166432DA AT 166432 B AT166432 B AT 166432B
Authority
AT
Austria
Prior art keywords
sep
hot
steels
exposed
action
Prior art date
Application number
Other languages
German (de)
Inventor
Ludwig Dr Ing Grassinger
Walter Dr Ing Aichholzer
Original Assignee
Schoeller Bleckmann Stahlwerke
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 Schoeller Bleckmann Stahlwerke filed Critical Schoeller Bleckmann Stahlwerke
Application granted granted Critical
Publication of AT166432B publication Critical patent/AT166432B/en

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Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
<tb> 
<tb> f) <SEP> Cr <SEP> W <SEP> V
<tb> Stahl <SEP> Nr. <SEP> C <SEP> Cr <SEP> W <SEP> V
<tb> ! <SEP> Prozent
<tb> 1 <SEP> 0. <SEP> 28 <SEP> 2. <SEP> 70 <SEP> 8. <SEP> 50 <SEP> 0'20
<tb> 2 <SEP> 0-40 <SEP> 3-71-0-65
<tb> 3 <SEP> 0#47 <SEP> 9-89-0-64
<tb> 4 <SEP> 0-53 <SEP> 3-51-0-84
<tb> 5 <SEP> 0-57 <SEP> 6-30-0-84
<tb> 6 <SEP> 0-70 <SEP> 3-20-1-35
<tb> 7 <SEP> 0-71 <SEP> 10-06-1-53
<tb> 8 <SEP> 1-01 <SEP> 3-33-2-14
<tb> 9 <SEP> 0-96 <SEP> 10-52-1-98
<tb> Festigkeit <SEP> kg/mm2 <SEP> bei <SEP> einer
<tb> Stahl <SEP> Härte-Anlasstemperatur <SEP> von
<tb> Nr.

   <SEP> temperatur
<tb> 450  <SEP> C <SEP> 500  <SEP> C <SEP> 550  <SEP> C <SEP> 600  <SEP> C
<tb> I <SEP> 11000 <SEP> C <SEP> I <SEP> 160 <SEP> 155 <SEP> 145
<tb> 2 <SEP> 1000"C <SEP> IM <SEP> 165 <SEP> 135 <SEP> 125
<tb> 3 <SEP> 1020  <SEP> C <SEP> 180 <SEP> 180 <SEP> 145 <SEP> 125
<tb> 4 <SEP> 1020  <SEP> C <SEP> 165 <SEP> 165 <SEP> 165 <SEP> 150
<tb> 5 <SEP> 1020  <SEP> C <SEP> 195 <SEP> 185 <SEP> 165 <SEP> 125
<tb> 6 <SEP> 1020 <SEP> 0 <SEP> C <SEP> 185 <SEP> 185 <SEP> 170 <SEP> 145
<tb> 7 <SEP> 1070  <SEP> C <SEP> 200 <SEP> 200 <SEP> 165 <SEP> 125
<tb> 8 <SEP> 950  <SEP> C <SEP> 185 <SEP> 180 <SEP> 165 <SEP> 135
<tb> 9 <SEP> 1070  <SEP> C <SEP> 210 <SEP> 210 <SEP> 175 <SEP> 130
<tb> 
 
Nun war es zwar an sich bekannt, dass die Anlassbeständigkeit von Stählen durch Zusatz von Vanadium erhöht werden kann.

   Eine so hohe Anlassbeständigkeit war aber bei den gemäss der Erfindung zu verwendenden wolfram-, molybdänund kobaltfreien Chrom-Vanadium-Stählen nicht zu erwarten, zumal die bekannten Warmarbeitsstähle nur   bis zu 0#5% Vanadium   enthalten. So wird z. B. die Festigkeit eines bekannten Warmarheitsstahles mit etwa   0-45% Kohlenstoff,   etwa 
 EMI1.2 
 den   anmeldungsgemässen   Stählen bei einer Anlasstemperatur von 400   C bereits um 12 kg/mm2 und bei einer Anlasstemperatur von 600   C sogar um 44 kg/mm2 übertroffen. 



   Sämtliche erfindungsgemäss zu verwendenden Stähle sind leicht schmiedbar und im geglühten Zustand gut bearbeitbar. Um eine Verarmung der Grundmasse an Kohlenstoff zu vermeiden, erscheint es zweckmässig, mit steigendem Vanadiumgehalt auch den Kohlenstoffgehalt innerhalb der angegebenen Grenzen zu erhöhen. 

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



   <Desc / Clms Page number 1>
 
 EMI1.1
 
<tb>
<tb> f) <SEP> Cr <SEP> W <SEP> V
<tb> Steel <SEP> No. <SEP> C <SEP> Cr <SEP> W <SEP> V
<tb>! <SEP> percent
<tb> 1 <SEP> 0. <SEP> 28 <SEP> 2. <SEP> 70 <SEP> 8. <SEP> 50 <SEP> 0'20
<tb> 2 <SEP> 0-40 <SEP> 3-71-0-65
<tb> 3 <SEP> 0 # 47 <SEP> 9-89-0-64
<tb> 4 <SEP> 0-53 <SEP> 3-51-0-84
<tb> 5 <SEP> 0-57 <SEP> 6-30-0-84
<tb> 6 <SEP> 0-70 <SEP> 3-20-1-35
<tb> 7 <SEP> 0-71 <SEP> 10-06-1-53
<tb> 8 <SEP> 1-01 <SEP> 3-33-2-14
<tb> 9 <SEP> 0-96 <SEP> 10-52-1-98
<tb> Strength <SEP> kg / mm2 <SEP> with <SEP> one
<tb> steel <SEP> tempering tempering temperature <SEP> of
<tb> No.

   <SEP> temperature
<tb> 450 <SEP> C <SEP> 500 <SEP> C <SEP> 550 <SEP> C <SEP> 600 <SEP> C
<tb> I <SEP> 11000 <SEP> C <SEP> I <SEP> 160 <SEP> 155 <SEP> 145
<tb> 2 <SEP> 1000 "C <SEP> IM <SEP> 165 <SEP> 135 <SEP> 125
<tb> 3 <SEP> 1020 <SEP> C <SEP> 180 <SEP> 180 <SEP> 145 <SEP> 125
<tb> 4 <SEP> 1020 <SEP> C <SEP> 165 <SEP> 165 <SEP> 165 <SEP> 150
<tb> 5 <SEP> 1020 <SEP> C <SEP> 195 <SEP> 185 <SEP> 165 <SEP> 125
<tb> 6 <SEP> 1020 <SEP> 0 <SEP> C <SEP> 185 <SEP> 185 <SEP> 170 <SEP> 145
<tb> 7 <SEP> 1070 <SEP> C <SEP> 200 <SEP> 200 <SEP> 165 <SEP> 125
<tb> 8 <SEP> 950 <SEP> C <SEP> 185 <SEP> 180 <SEP> 165 <SEP> 135
<tb> 9 <SEP> 1070 <SEP> C <SEP> 210 <SEP> 210 <SEP> 175 <SEP> 130
<tb>
 
Now it was known that the tempering resistance of steels can be increased by adding vanadium.

   Such a high tempering resistance was not to be expected with the tungsten, molybdenum and cobalt-free chrome-vanadium steels to be used according to the invention, especially since the known hot-work steels only contain up to 0-5% vanadium. So z. B. the strength of a known high-temperature steel with about 0-45% carbon, about
 EMI1.2
 the steels according to the application are already exceeded by 12 kg / mm2 at a tempering temperature of 400 C and even by 44 kg / mm2 at a tempering temperature of 600 C



   All steels to be used according to the invention are easy to forge and can be easily machined in the annealed state. In order to avoid a depletion of the basic mass of carbon, it appears expedient to increase the carbon content within the specified limits as the vanadium content increases.

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

 

Claims (1)

PATENTANSPRUCH : Die Verwendung von Stählen mit 0-30 bis 1-20% Kohlenstoff, 3-00 bis 14-00% Chrom, 0-50 bis 2-00% Vanadium, Rest Eisen mit den üblichen Verunreinigungen als Werkstoff für auf übliche Art hergestellte Warmwerkzeuge, die der Einwirkung heisser Werkstücke ausgesetzt sind. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: The use of steels with 0-30 to 1-20% carbon, 3-00 to 14-00% chromium, 0-50 to 2-00% vanadium, The remainder of iron with the usual impurities as a material for hot tools manufactured in the usual way that are exposed to the action of hot workpieces. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT166432D 1947-03-18 1947-03-18 Steels for hot tools that are exposed to the action of hot workpieces AT166432B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT166432T 1947-03-18

Publications (1)

Publication Number Publication Date
AT166432B true AT166432B (en) 1950-07-25

Family

ID=34200289

Family Applications (1)

Application Number Title Priority Date Filing Date
AT166432D AT166432B (en) 1947-03-18 1947-03-18 Steels for hot tools that are exposed to the action of hot workpieces

Country Status (1)

Country Link
AT (1) AT166432B (en)

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