AT122461B - Nitrided steel objects that require great resistance to the stresses arising from high pressure or impact. - Google Patents

Nitrided steel objects that require great resistance to the stresses arising from high pressure or impact.

Info

Publication number
AT122461B
AT122461B AT122461DA AT122461B AT 122461 B AT122461 B AT 122461B AT 122461D A AT122461D A AT 122461DA AT 122461 B AT122461 B AT 122461B
Authority
AT
Austria
Prior art keywords
high pressure
impact
great resistance
require great
nitrided steel
Prior art date
Application number
Other languages
German (de)
Original Assignee
Krupp 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 Ag filed Critical Krupp Ag
Application granted granted Critical
Publication of AT122461B publication Critical patent/AT122461B/en

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  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Sliding-Contact Bearings (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Nitrierte stählerne Gegenstände, die grossen Widerstand gegen die bei hohem Druck oder Stössen auftretende Beanspruchung erfordern. 



   Bei Gegenständen (z. B. Ziehmatrizen, Zahnräder, Klauenkupplungen, Kugel-und Rollenlager), die aus nitriertem Stahl hergestellt sind, hat sich der Übelstand gezeigt, dass ihre Nitrierschichte gegen- über Beanspruchungen durch hohen Druck (über etwa 70   kg/mm2)   oder   Stösse   trotz ihrer sehr grossen   Oberflächenhärte   auf die Dauer nicht standhielt. Die Erfindung bezweckt, nitrierte Gegenstände zu schaffen, die diesen Nachteil bei ihrer Verwendung zu den genannten Zwecken nicht aufweisen. Dieser Zweck wird der Erfindung gemäss dadurch erreicht, dass zur Herstellung   dieser Gegenstände   Stahllegierungen verwendet werden, die nach Erwärmung auf mindestens 450  C im Kern eine   Brinellhärte   von etwa 350 und mehr aufweisen.

   Als für die Herstellung der angegebenen Gegenstände besonders 
 EMI1.1 
 natürlich nur solche in Betracht kommen, die nitrierbar sind. Die Tatsache, dass die hier vorgeschlagenen Stahllegierungen nach dem Nitrieren auch auf die Dauer sehr hohen   Druck- oder Stossbeanspruchungen   gewachsen sind und durch diese nicht abgenutzt werden, hat seinen Grund darin, dass bei ihnen die sehr 
 EMI1.2 
 Kernmaterials in dieses nicht eingedrückt werden kann. 



    PATENT-ANSPRÜCHE :   
 EMI1.3 
 auftretende Beanspruchung erfordern, dadurch gekennzeichnet, dass dieselben durch Nitrieren von Stahllegierungen hergestellt sind, die nach   Erwärmung   auf mindestens 450  C eine   Brinellhärte   von etwa 350 und mehr aufweisen. 

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



   <Desc / Clms Page number 1>
 



  Nitrided steel objects that require great resistance to the stresses that occur in the event of high pressure or impact.



   In the case of objects (e.g. drawing dies, gears, claw couplings, ball and roller bearings) made of nitrided steel, the disadvantage has been shown that their nitrided layer can withstand high pressure loads (over about 70 kg / mm2) or impacts in the long run despite their very high surface hardness. The aim of the invention is to create nitrided objects which do not have this disadvantage when they are used for the purposes mentioned. According to the invention, this purpose is achieved by using steel alloys for the production of these objects which, after being heated to at least 450 ° C., have a Brinell hardness of about 350 and more in the core.

   As special for making the specified items
 EMI1.1
 Of course, only those that can be nitrided come into consideration. The fact that the steel alloys proposed here can withstand very high pressure or shock loads after nitriding and are not worn out by them is due to the fact that with them the very
 EMI1.2
 Core material can not be pressed into this.



    PATENT CLAIMS:
 EMI1.3
 require occurring stress, characterized in that the same are produced by nitriding steel alloys which, after heating to at least 450 C, have a Brinell hardness of approximately 350 and more.

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

Claims (1)

2. Gegenstände nach Anspruch 1, dadurch gekennzeichnet, dass sie aus einer Stahllegierung hergestellt sind, die etwa 0-4 bis 0-5% Kohlenstoff, 0-25 bis 0-35% Silizium, 0-5 bis 0-6% Mangan, 1-2 bis 1-5% Chrom, 0-3% Molybdän und 0-5% Vanadium enthält. 2. Articles according to claim 1, characterized in that they are made of a steel alloy containing about 0-4 to 0-5% carbon, 0-25 to 0-35% silicon, 0-5 to 0-6% manganese, Contains 1-2 to 1-5% chromium, 0-3% molybdenum and 0-5% vanadium. 3. Gegenstände nach Anspruch 1, dadurch gekennzeichnet, dass sie aus einer Stahllegierung hergestellt sind, die etwa 2% Kohlenstoff, 12% Chrom und 0-8% Wolfram enthält. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 3. Articles according to claim 1, characterized in that they are made from a steel alloy containing about 2% carbon, 12% chromium and 0-8% tungsten. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT122461D 1928-05-25 1929-05-21 Nitrided steel objects that require great resistance to the stresses arising from high pressure or impact. AT122461B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE122461X 1928-05-25

Publications (1)

Publication Number Publication Date
AT122461B true AT122461B (en) 1931-04-25

Family

ID=5657381

Family Applications (1)

Application Number Title Priority Date Filing Date
AT122461D AT122461B (en) 1928-05-25 1929-05-21 Nitrided steel objects that require great resistance to the stresses arising from high pressure or impact.

Country Status (1)

Country Link
AT (1) AT122461B (en)

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