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DE955150C - Steel alloy for hot work tools, especially press dies - Google Patents

Steel alloy for hot work tools, especially press dies

Info

Publication number
DE955150C
DE955150C DEB5438D DEB0005438D DE955150C DE 955150 C DE955150 C DE 955150C DE B5438 D DEB5438 D DE B5438D DE B0005438 D DEB0005438 D DE B0005438D DE 955150 C DE955150 C DE 955150C
Authority
DE
Germany
Prior art keywords
hot work
press dies
work tools
steel alloy
titanium
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEB5438D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebrueder Boehler and Co AG
Original Assignee
Gebrueder Boehler and Co 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 Gebrueder Boehler and Co AG filed Critical Gebrueder Boehler and Co AG
Priority to DEB5438D priority Critical patent/DE955150C/en
Application granted granted Critical
Publication of DE955150C publication Critical patent/DE955150C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Forging (AREA)

Description

Stahllegierung für Warmarbeitswerkzeuge, insbesondere Preßmatrizen Im Hauptpatent 952 820 werden Warm.arbeitsstähle beschrieben, deren Leistungen trotz des niederen Legierungsgehaltes für viele Werkzeuge erheblich über jenen der Stähle, mit hohen Wolframgehalten liegen. Diese Warmarbeitsstähle enthalten o,1 bis. 0,7% Kohlenstoff, 0,5 bis 2,50/0 Chrom, 0,5 bis 2% Vanadin, 0,3 bis 2,8% Wolfram und 1,7 bis 0,2% Molyb.dän, wobei die Summe des Wolfram- und Molybdängehaltes 2% nicht übersteigen soll. Weitere Untersuchungen haben nun gezeigt, daß diese Legierungen noch dadurch verbessert werden können, daß geringe Mengen Titan zulegiert werden. Ein Zusatz von, o,2 bis 0,7% Titan vermag die Anlaßbeständigkeit weiter zu erhöhen, verbessert,die Warmfestigkeit und setzt die Brandrißempfindlichkeit herab.Steel alloy for hot work tools, in particular press dies. The main patent 952 820 describes hot work steels whose performance, despite the low alloy content, is considerably higher than that of steels with high tungsten content for many tools. These hot work steels contain 0.1 to. 0.7% carbon, 0.5 to 2.50 / 0 chromium, 0.5 to 2% vanadium, 0.3 to 2.8% tungsten and 1.7 to 0.2% molybdenum, with the sum of the tungsten and molybdenum content should not exceed 2%. Further investigations have now shown that these alloys can be improved by adding small amounts of titanium. An addition of 0.2 to 0.7% titanium can further increase the tempering resistance, improve the heat resistance and reduce the sensitivity to fire cracking.

Die Wirkungsweise dieser kleinen Titanzusätze läßt sich so erklären, daß das Titan als kräftiger Karbidbildrner in die bei diesen Stählen sich bil,-denden Mischkarbide eintritt und deren Eigenschaften günstig beeinflußt. Das Titankarbid lös°sich ebenso wie das Wolfram- und Molybdänkarbid im Vanadinkarbid und führt bei diesem gl-eicf den anderen beiden Karbiden zu einer Gitteraufwei turfg. : -Durch die vorgeschlagenen Titanzusätze kann man in vielen Fällen mit geringeren Molybd'än-und Wolframgehalten auskommen, d. h., es sind die im Stammpatent vorgesehenen Zusätze an Wolfram und/oder Molybdän teilweise durch den Titangehalt ersetzbar bzw. die vorzusehende Summe des Wolfram- und Molybdängehaltes kann um: den Titangehalt verringert werden.The mode of action of these small titanium additives can be explained as follows: that titanium, as a strong carbide former, ends up forming in these steels Mixed carbides occurs and influences their properties favorably. The titanium carbide also dissolves like the tungsten and molybdenum carbide in vanadium carbide and leads to this gl-eicf the other two carbides to form a grid arrangement. : -By the proposed In many cases, titanium additions can be made with lower molybdenum and tungsten contents get by, d. This means that they are the tungsten and / or additions provided for in the parent patent Molybdenum can be partially replaced by the titanium content or the total of the Tungsten and molybdenum content can be reduced by: the titanium content.

Besonders vorteilhaft haben sieh derartige titanhaltige Legierungen zur Herstellung von Preßmatrizen für die Schrauben- und Nietenfertigung sowie für Einsätze in höchstbeanspruchten Schmiede-und Preßgesen'ken erwiesen.Such alloys containing titanium are particularly advantageous for the production of press dies for screw and rivet production as well as for Proven to be used in highly stressed forging and press dies.

Claims (1)

PATENTANSPRÜCHE: r. Chrom-Vanadin-Wolfram-Molybdän-Stahl-Legierungen für Warmarbeitswerkzeuge, insbesondere für Preßmatrizen nach Patent 95282o, gekennzeichnet durch einen Gehalt von 0,2 bis 0,7°/o Titan. z. Stahllegierung nach Anspruch r für Warmarbeitswerkzeuge, insbesondere für Preßmatrizen, dadurch-gekennzeichnet, daß der Wolfram-und/oder Molybdängehal.t teilweise durch den Titangehalt ersetzt ist.PATENT CLAIMS: r. Chrome-vanadium-tungsten-molybdenum steel alloys for hot work tools, especially for press dies according to patent 95282o by a content of 0.2 to 0.7% titanium. z. Steel alloy according to claim r for Hot work tools, in particular for press dies, characterized in that the tungsten and / or molybdenum content is partially replaced by the titanium content.
DEB5438D 1942-01-16 1942-01-16 Steel alloy for hot work tools, especially press dies Expired DE955150C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB5438D DE955150C (en) 1942-01-16 1942-01-16 Steel alloy for hot work tools, especially press dies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB5438D DE955150C (en) 1942-01-16 1942-01-16 Steel alloy for hot work tools, especially press dies

Publications (1)

Publication Number Publication Date
DE955150C true DE955150C (en) 1956-12-27

Family

ID=6954018

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB5438D Expired DE955150C (en) 1942-01-16 1942-01-16 Steel alloy for hot work tools, especially press dies

Country Status (1)

Country Link
DE (1) DE955150C (en)

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