DE940047C - Process for hardening objects made of steel - Google Patents

Process for hardening objects made of steel

Info

Publication number
DE940047C
DE940047C DEO1026D DEO0001026D DE940047C DE 940047 C DE940047 C DE 940047C DE O1026 D DEO1026 D DE O1026D DE O0001026 D DEO0001026 D DE O0001026D DE 940047 C DE940047 C DE 940047C
Authority
DE
Germany
Prior art keywords
temperature
final deformation
hardening
steel
lying
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
DEO1026D
Other languages
German (de)
Inventor
Wolfgang Dr-Ing Kuentscher
Otto Dr-Ing Kukla
Eberhard Mende
Wilhelm Dipl-Ing Dr Stich
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.)
OBERHUETTEN VEREINIGTE OBERSCH
Original Assignee
OBERHUETTEN VEREINIGTE OBERSCH
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 OBERHUETTEN VEREINIGTE OBERSCH filed Critical OBERHUETTEN VEREINIGTE OBERSCH
Priority to DEO1026D priority Critical patent/DE940047C/en
Application granted granted Critical
Publication of DE940047C publication Critical patent/DE940047C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Description

Verfahren zum Härten von Gegenständen aus Stahl Im Patent 753 198 ist ein Verfahren zur Erzeugung von Stählen hoher Gütewerte beschrieben, das sich dadurch kennzeichnet, daß die Stähle ihre Endverformung bei möglichst niedriger, bei oder über dem oberen Umwandlungspunkt gelegenen Temperatur erfahren und unmittelbar aus der Endverformung heraus gehärtet und gegebenenfalls vergütet werden.Method of hardening objects made of steel in patent 753 198 describes a process for the production of steels with high quality values characterized in that the steels have their final deformation at the lowest possible, experience at or above the upper transition point temperature and immediately hardened from the final deformation and, if necessary, tempered.

Eingehende Versuche und Ermittlungen haben nun -ergeben, daß sich bei Anwendung des Verfahrens nach dem Hauptpatent besonders hohe Gütewerte dann erzielen lassen, wenn man - was den Gegenstand der vorliegenden Erfindung bildet -die fertig verformten Gegenstände aus der Endverformungstemperatur in einem Härtebad abschreckt, dessen Temperatur in den Grenzen zwischen ioo und 35o° C gehalten wird.In-depth tests and investigations have now revealed that if the method according to the main patent is used, then particularly high quality values can be achieved if - what forms the subject of the present invention -the finished deformed objects from the final deformation temperature in a hardening bath deterrent, the temperature of which is kept within the limits between 100 and 35o ° C.

Weiter hat sich gezeigt, daß sich eine noch weitere Steigerung der Gütewerte dadurch erreichen läßt, daß man Endverformungstemperatur, Endverformungsgrad und Endverformungsgeschwindigkeit einerseits und- die Temperatur des Abschreckbades andererseits aufeinander abstimmt, und zwar derart, daß einem höheren Wert der Endvarformungstemperatur, -des Endverformungsgrades und/oder der Endverformungsgeschwindig-. -keit eine in dem genannten Bereich liegende geringere Temperatur des Härtebades entspricht, und umgekehrt: Von ganz besonderer Bedeutung ist das erfindungsgemäße Verfahren für die Behandlung von Werkzeug- und ähnlichen Stählen mit verzögerter Umwandlungstemperatur und Umwandlungsgeschwindigkeit und den aus ihnen hergestellten Erzeugnissen, vor allem solchen von vielseitiger Form.It has also been shown that there is an even further increase in Quality values can be achieved by the final deformation temperature, final deformation degree and Final deformation speed on the one hand and the temperature of the quenching bath on the other hand, are coordinated in such a way that a higher value of the final varnishing temperature, -the degree of final deformation and / or the final deformation speed-. -hood one in corresponds to the lower temperature of the hardening bath lying in the range mentioned, and Conversely: The method according to the invention is of very particular importance for the treatment of tool and similar steels with retarded transformation temperatures and conversion rate and the products made from them all those of varied form.

Die durch die Anwendung des den Gegenstand der Erfindung bildenden Verfahrens erzielten Vorteile bestehen - abgesehen von der allgemeinen Steigerung der Gütewerte - insbesondere in der Vermeidung der sonst beim Härten stets auftretenden Spannungen, in der Erreichung eines möglichst geringen Verzuges und der Ausbildung eines gleichmäßigen Härtegefügekorns.The through the application of the subject matter of the invention The advantages achieved by the method exist - apart from the general increase the quality values - especially in the avoidance of those that otherwise always occur during hardening Tensions in achieving the lowest possible delay and training a uniform grain of hardness.

Claims (4)

PATENTANSPRÜCHE: i. Verfahren zum Härten von Gegenständen aus Stahl in unmittelbarem Abschluß an die bei möglichst- niedriger, bei oder über dem oberen Umwandlungspunkt gelegenen Temperatur erfolgende Endverformung nach dem Patent 753I98 dadurch gekennzeichnet, daß die Gegenstände in einem Bade abgeschreckt werden, dessen Temperatur je nach Art des Stahles zwischen ioo und 35o° C liegt. PATENT CLAIMS: i. Process for hardening objects made of steel in direct connection with those at the lowest possible, at or above the upper The final deformation according to the 753I98 patent characterized in that the objects are quenched in a bath, of which Depending on the type of steel, the temperature is between 100 and 35o ° C. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß einer niedrigeren Endverformungstemperatur eine höhere, in dem genannten Bereich liegende Temperatur des Härtebades entspricht, und umgekehrt. 2. Procedure according to Claim i, characterized in that a lower final deformation temperature corresponds to a higher temperature of the hardening bath lying in the specified range, and vice versa. 3. Verfahren nach den Ansprüchen i und 2, dadurch gekennzeichnet, daß einem geringen Endverformungsgrad eine höhere, in dem genannten Bereich liegende Temperatur des Härtebades entspricht, und umgekehrt. . .3. The method according to claims i and 2, characterized in that that a lower degree of final deformation a higher, lying in the range mentioned Corresponds to the temperature of the hardening bath, and vice versa. . . 4. Verfahren nach den Ansprüchen i bis 3, dadurch gekennzeichnet, daß einer geringen Endverformungsgeschwindigkeit eine höhere, in dem genannten Bereich- liegende Temperatur des Härtebades entspricht, und umgekehrt. Angezogene Druckschriften: Schweizerische Patentschrift Nr. 79 793; britische Patentschrift Nr. 423 i64.4. The method according to claims i to 3, characterized in that a lower final deformation rate corresponds to a higher temperature of the hardening bath lying in the range mentioned, and vice versa. Cited publications: Swiss patent specification No. 79 793; British Patent No. 423 i64.
DEO1026D 1941-10-26 1941-10-26 Process for hardening objects made of steel Expired DE940047C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEO1026D DE940047C (en) 1941-10-26 1941-10-26 Process for hardening objects made of steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEO1026D DE940047C (en) 1941-10-26 1941-10-26 Process for hardening objects made of steel

Publications (1)

Publication Number Publication Date
DE940047C true DE940047C (en) 1956-03-08

Family

ID=7349411

Family Applications (1)

Application Number Title Priority Date Filing Date
DEO1026D Expired DE940047C (en) 1941-10-26 1941-10-26 Process for hardening objects made of steel

Country Status (1)

Country Link
DE (1) DE940047C (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH79793A (en) * 1918-03-12 1919-01-16 Jean Weinsziehr Grist mill for milling cattle feed or for pre-milling grains for the purpose of flour preparation
GB423164A (en) * 1933-04-27 1935-01-28 Henry David Lloyd Improvements in and relating to the production of heat-treated coiled medium or highcarbon steel wire rods

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH79793A (en) * 1918-03-12 1919-01-16 Jean Weinsziehr Grist mill for milling cattle feed or for pre-milling grains for the purpose of flour preparation
GB423164A (en) * 1933-04-27 1935-01-28 Henry David Lloyd Improvements in and relating to the production of heat-treated coiled medium or highcarbon steel wire rods

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