DE642709C - Method and device for hardening the surface of workpieces - Google Patents

Method and device for hardening the surface of workpieces

Info

Publication number
DE642709C
DE642709C DEI49398D DEI0049398D DE642709C DE 642709 C DE642709 C DE 642709C DE I49398 D DEI49398 D DE I49398D DE I0049398 D DEI0049398 D DE I0049398D DE 642709 C DE642709 C DE 642709C
Authority
DE
Germany
Prior art keywords
hardening
workpieces
arc
electrodes
heating
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
DEI49398D
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Publication date
Priority to DEI49398D priority Critical patent/DE642709C/en
Application granted granted Critical
Publication of DE642709C publication Critical patent/DE642709C/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
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation

Landscapes

  • 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 und Vorrichtung zum Härten' der Oberfläche von Werkstücken In dem Hauptpatent 640 049 ist ein Verfahren und eine Vorrichtung zum Oberflächenhärten von Werkstücken beschrieben, wobei die Erhitzung und die Abschreckung unter der Oberfläche der Abschreckflüssigkeit erfolgen. Für die Erhitzung des Werkstückes wird ein. Autogenbrenner benutzt, der innerhalb der Abschreckflüssigkeit selbst angeordnet ist. Die um das Werkstück stehende Flüssigkeit wird während des Erhitzungsvorganges durch die Flamme des Brenners weggedrängt und erst wieder zugelassen, wenn die Flamme entfernt ist.Method and device for hardening the surface of workpieces In the main patent 640 049 is a method and a device for surface hardening of workpieces, with heating and quenching under the Surface of the quenching liquid. For heating the workpiece becomes a. Oxy-fuel torch used, which is inside the quenching liquid itself is arranged. The liquid standing around the workpiece is released during the heating process pushed away by the flame of the burner and only allowed again when the flame away.

Nach dem Gedankengange der vorliegenden Erfindung soll für die Erhitzung des Werkstückes an Stelle der- Autogenflammie der elektrische Lichtbogen. benutzt werden. Es ist zwar bereits bekanntgeworden, Werkstücke an der Luft mit dem elektrischen Lichtbogen zwecks Härtung auf die nötige Temperatur zu bringen. Neu ist indessen die Verwendung des Lichtbogens für die Härtung unter Wasser.According to the idea of the present invention, for heating of the workpiece instead of the autogenous flame the electric arc. used will. Although it has already become known, workpieces in the air with the electrical Bring the arc to the required temperature for hardening. What is new, however the use of the electric arc for hardening under water.

In den Abb. i und 2 sind Beispiele von Ausführungsformen des Verfahrens dargestellt. W bezeichnet die zu härtende Welle, die innerhalb der Abschreckflüssigkeit A gelage rt ist. Der Lichtbogen wird zwischen den beiden ElektrodenE bzw. Ei gezogen. Der am Lichtbogen entstehende Gasdruck treibt in ganz ähnlicher Weise, wie dies bei Anwendung des Autogenbrenners der Fall ist, während des Erhitzungsvorganges die Abschreckflüssigkeit von der zu härtenden Stelle des Werkstückes fort. Zweckmäßig sind die Elektroden in Schutzhülsen H bzw. Hl geführt. Die Abb.2 zeigt eine Ausführungsform des Verfahrens, wobei sich die Elektroden in besonderen Kammern I( bzw. K, befinden, die meinen gemeinsamen Raum R einmünden. In diesem Raum R brennt der Lichtbogen. Zum Zwecke einer sicheren Verdrängung des Wassers kann in diesem Falle durch die Leitung L noch ein Preßgas, wie Luft o. ,dgl., eingeblasen werden.In Figs. I and 2 are examples of embodiments of the method shown. W denotes the shaft to be hardened, which is within the quenching liquid A is stored. The arc is drawn between the two electrodes E and Ei. The gas pressure created at the arc drives in a very similar way to this when using the oxy-fuel burner is the case during the heating process the quenching liquid away from the part to be hardened. Appropriate the electrodes are guided in protective sleeves H or Hl. Fig.2 shows an embodiment of the process, with the electrodes in special chambers I (or K, which flow into my common room R. The arc burns in this space R. For the purpose of a safe displacement of the water can in this case by the Line L still a compressed gas, such as air or the like., Are blown.

Claims (2)

PATENTANSPRÜCHE': i. Verfahren zum Härten der Oberfläche von Werkstücken nach Patent 640 049, gekennzeichnet durch die Verwendung des elektrischen Lichtbogens. PATENT CLAIMS ': i. Process for hardening the surface of workpieces according to patent 640 049, characterized by the use of the electric arc. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch i, dadurch gekennzeichnet, daß die Elektroden sich in besonderen Kammern befinden, die in einen, gegebenenfalls mit Mitteln zur Einführung von Preßgas versehenen, gemeinsamen Raum einmünden.2. Device for performing the method according to claim i, characterized in that that the electrodes are in special chambers, which in one, if necessary open with means for the introduction of compressed gas provided, common space.
DEI49398D Method and device for hardening the surface of workpieces Expired DE642709C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI49398D DE642709C (en) Method and device for hardening the surface of workpieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI49398D DE642709C (en) Method and device for hardening the surface of workpieces

Publications (1)

Publication Number Publication Date
DE642709C true DE642709C (en) 1937-03-12

Family

ID=7192561

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI49398D Expired DE642709C (en) Method and device for hardening the surface of workpieces

Country Status (1)

Country Link
DE (1) DE642709C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE899986C (en) * 1942-04-22 1953-12-17 Deutsche Edelstahlwerke Ag Process and device for surface hardening of metallic workpieces
DE1174345B (en) * 1958-09-18 1964-07-23 Plasma Flame Corp Process for surface hardening of steel
DE1188108B (en) * 1958-08-02 1965-03-04 Wistra Ofenbau Ges Mit Beschra Quenching device for elongated goods coming from hardening and hardening ovens
DE1202811B (en) * 1957-07-26 1965-10-14 Nicolas Mouravieff Process and device for surface hardening steel workpieces

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE899986C (en) * 1942-04-22 1953-12-17 Deutsche Edelstahlwerke Ag Process and device for surface hardening of metallic workpieces
DE1202811B (en) * 1957-07-26 1965-10-14 Nicolas Mouravieff Process and device for surface hardening steel workpieces
DE1188108B (en) * 1958-08-02 1965-03-04 Wistra Ofenbau Ges Mit Beschra Quenching device for elongated goods coming from hardening and hardening ovens
DE1174345B (en) * 1958-09-18 1964-07-23 Plasma Flame Corp Process for surface hardening of steel

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