DE880311C - Process for surface hardening of hardenable metallic materials - Google Patents

Process for surface hardening of hardenable metallic materials

Info

Publication number
DE880311C
DE880311C DEL10058A DEL0010058A DE880311C DE 880311 C DE880311 C DE 880311C DE L10058 A DEL10058 A DE L10058A DE L0010058 A DEL0010058 A DE L0010058A DE 880311 C DE880311 C DE 880311C
Authority
DE
Germany
Prior art keywords
vacuum
metallic materials
electron beam
heated
quenching
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
DEL10058A
Other languages
German (de)
Inventor
Werner Dr Phil Koch
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL10058A priority Critical patent/DE880311C/en
Application granted granted Critical
Publication of DE880311C publication Critical patent/DE880311C/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 zum Oberflächenhärten von härtbaren metallischen Werkstoffen Die bislang üblichen Verfahren zum Oberflächenhärten von härtbaren metallischen Werkstoffen, insbesondere zum Härten an örtlich begrenzten Flächen, wie sie beispielsweise zur Herstellung von Feinlagern benötigt werden, waren mit dem bisher üblichen Verfahren der Erhitzung, wie z. B. im Hoc'hfrequenzfeld, äußerst schwierig, da zwangsläufig stets ein großer Teil des Körpers, der nicht gehärtet werden sollte, miterwärmt werden mußte.Process for surface hardening of hardenable metallic materials The previously common methods for surface hardening of hardenable metallic Materials, especially for hardening on locally limited surfaces, such as those for example required for the production of fine bearings, were with the previously usual method the heating, such as B. in the high frequency field, extremely difficult because inevitable a large part of the body that should not be hardened is always heated at the same time had to become.

Die vorliegende Erfindung betrifft nun ein Verfahren zum Oberflächenhärten von härtbaren metallischen Werkstoffen, insbesondere zur Herstellung von Feinlagern, das sich von den bisher bekannten dadurch. unterscheidet, daß der zu härtende Werkstoff im Vakuum unter dem Elektronenstrahl örtlich an seiner Oberfläche erhitzt wird.The present invention now relates to a method of surface hardening of hardenable metallic materials, especially for the production of fine bearings, that differs from the previously known. distinguishes that the material to be hardened is locally heated on its surface in a vacuum under the electron beam.

Zum Abschreckender erhitzten Stelle hat es sich als vorteilhaft erwiesen, entweder den Körper selber vor dem Härten tief zu kühlen, so daß das Abschrecken nach Aufhören der Erhitzung zufolge der gespeicherten Kältemenge eintritt, oder aber, was insbesondere bei dünnen Werkstücken vorgenommen wird, diese in der Vakuumwandung einzubauen, so daß ihre Abschreckung von außen her mit den bisher bekannten Mitteln durchgeführt werden kann. Eine weitere Möglichkeit der Abschreckung liegt in -der Verwendung eines anderen gekühlten Körpers, der entweder vermöge seiner eigenen thermischen Kapazität sehr tief :gekühlt werden kann oder aber von einem Kühlmittel wie flüssiger Luft durchflossen wird und durch Auflegen auf die erhitzte Stelle diese durch Kältezufuhr abschrecktIn order to deter the heated area, it has proven advantageous to either to cool the body itself deeply before hardening, so that the quenching occurs after the heating has ceased due to the stored amount of cold, or but, what is done in particular with thin workpieces, these in the vacuum wall built in, so that their deterrence from the outside with the means known up to now can be carried out. Another deterrent option lies in the use of another cooled body, either by virtue of its own thermal capacity very deep: can be cooled or by one Coolant such as liquid air is flowed through and by placing on the heated Place this deterrent by exposure to cold

Claims (5)

PATENTANSPRÜCHE: i. Verfahren zum Oberflächenhärten von härtbaren metallischen Werkstoffen, insbesondere zur Herstellung von Feinlagern, dadurch gekennzeichnet, daß der zu härtende Werkstoff im Vakuum unter dem Elektronenstrahl an seiner Oberfläche örtlich erhitzt wird. PATENT CLAIMS: i. Method for surface hardening of curable metallic materials, in particular for the production of fine bearings, characterized in that, that the material to be hardened in a vacuum under the electron beam on its surface is locally heated. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß der zu härtende Werkstoff vor der Erhitzung durch den Ele'ktronenstra'hl derart tiefgekühlt wird, daß nach Aufhören der Erhitzung ein Abschrecken mittels der in den Körper aufgenommenen Kältemenge erfolgt. 2. The method according to claim i, characterized in that the material to be hardened before being heated by the electron beam is deep-frozen that after the heating has stopped, quenching by means of the in The amount of cold absorbed by the body takes place. 3. Verfahrene nach Anspruch i zum Härten dünner Metallteile, dadurch gekennzeichnet, daß diese einen Teil der Vakuumwandung bilden und das Abschrecken von außerhalb des Vakums in an sich bekannter Weise vorgenommen wird. q.. 3. Method according to claim i for hardening thin metal parts, characterized in that they form part of the vacuum wall form and the quenching carried out from outside the vacuum in a manner known per se will. q .. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß das Abschrecken der erwärmten Stelle innerhalb des Vakuumraumes .durch einen bewegbaren, entweder zufolge seiner Wärmekapazität tiefgekühlten oder mit einem durchlaufenden Kühlmittel gekühlten Körper durch Berührung vorgenommen wird. Method according to claim i, characterized in that the quenching the heated point within the vacuum space .by a movable one, either according to its heat capacity frozen or with a continuous coolant cooled body is made by touch. 5. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Erhitzung mit einem intermetierenden Elektronenstrahl vorgenommen wird.5. The method according to claim i, characterized in that the heating with an intermittent electron beam is made.
DEL10058A 1951-09-09 1951-09-09 Process for surface hardening of hardenable metallic materials Expired DE880311C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL10058A DE880311C (en) 1951-09-09 1951-09-09 Process for surface hardening of hardenable metallic materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL10058A DE880311C (en) 1951-09-09 1951-09-09 Process for surface hardening of hardenable metallic materials

Publications (1)

Publication Number Publication Date
DE880311C true DE880311C (en) 1953-06-22

Family

ID=7258272

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL10058A Expired DE880311C (en) 1951-09-09 1951-09-09 Process for surface hardening of hardenable metallic materials

Country Status (1)

Country Link
DE (1) DE880311C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1048285B (en) * 1956-06-18 1959-01-08 Akad Wissenschaften Ddr Process for hardening workpieces
DE1185305B (en) * 1955-07-06 1965-01-14 United Aircraft Corp Process for soldering, welding and removing materials by means of a charge carrier beam
EP0001889A1 (en) * 1977-10-17 1979-05-16 Sciaky Bros., Inc. Method for surface hardening metals
DE2851142A1 (en) * 1978-11-25 1980-06-04 Neturen Co Ltd High tensile spring steel - is subjected to repeated surface induction heating to obtain extremely small grain size and increase fatigue strength
US4232094A (en) * 1972-12-12 1980-11-04 Skf Industrial Trading And Development Company B.V. Sprayed coatings on metal surfaces

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185305B (en) * 1955-07-06 1965-01-14 United Aircraft Corp Process for soldering, welding and removing materials by means of a charge carrier beam
DE1048285B (en) * 1956-06-18 1959-01-08 Akad Wissenschaften Ddr Process for hardening workpieces
US4232094A (en) * 1972-12-12 1980-11-04 Skf Industrial Trading And Development Company B.V. Sprayed coatings on metal surfaces
EP0001889A1 (en) * 1977-10-17 1979-05-16 Sciaky Bros., Inc. Method for surface hardening metals
DE2851142A1 (en) * 1978-11-25 1980-06-04 Neturen Co Ltd High tensile spring steel - is subjected to repeated surface induction heating to obtain extremely small grain size and increase fatigue strength

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