DE880446C - Process for hardening workpieces - Google Patents

Process for hardening workpieces

Info

Publication number
DE880446C
DE880446C DEA12171D DEA0012171D DE880446C DE 880446 C DE880446 C DE 880446C DE A12171 D DEA12171 D DE A12171D DE A0012171 D DEA0012171 D DE A0012171D DE 880446 C DE880446 C DE 880446C
Authority
DE
Germany
Prior art keywords
hardening
heating
workpieces
grinding
cutting edges
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
DEA12171D
Other languages
German (de)
Inventor
Karl Dr-Ing Schoenbacher
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.)
AEG AG
Original Assignee
AEG 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 AEG AG filed Critical AEG AG
Priority to DEA12171D priority Critical patent/DE880446C/en
Application granted granted Critical
Publication of DE880446C publication Critical patent/DE880446C/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

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)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Description

Verfahren zum Härten von Werkstücken Es ist häufig notwendig, sehr kleine Oberflächen von Werkstücken zu härten. Die Erhitzung wird in solchen Fällen mit Gas oder induzierten Strömen durchgeführt. Ein besonders einfaches Verfahren besteht gemäß der Erfindung darin, daß die Erhitzung im Wege der Reibung erfolgt. Die Reibungswärme kann beispielsweise mit Schleifscheiben erzeugt werden. Dabei wird der Vorteil erzielt, daß die Härtung von Schneiden in einem einzigen Arbeitsgang durchgeführt wird. So erfolgt das Schleifen zum Schärfen der Schneiden derart, daß die Härtetemperatur erreicht und dann durch geeignetes Abkühlen bzw. Abschrecken eine Härtung der Schneide erzielt wird.Method of hardening workpieces It is often necessary very to harden small surfaces of workpieces. The heating is in such cases carried out with gas or induced currents. A particularly simple process According to the invention, the heating takes place by means of friction. The frictional heat can be generated with grinding wheels, for example. Included the advantage is achieved that the hardening of cutting edges in a single operation is carried out. The grinding for sharpening the cutting edge is done in such a way that the hardening temperature is reached and then by suitable cooling or quenching hardening of the cutting edge is achieved.

Es ist wichtig, daß die Wärme an allen zu härtenden Stellen gleichmäßig erzeugt wird, damit auch eine gleichmäßige Härtung erfolgt. Um dies zu erreichen, können beispielsweise bei beidseitig zu härtenden Schneiden Schleifscheiben senkrecht zu beiden Schneiden bzw. der Schneidenachse angeordnet werden. Es kann dabei zweckmäßig sein, auf beiden Seiten mehrere Scheiben anzuordnen, die kammartig ineinandergreifen.It is important that the heat is uniform in all areas to be cured is generated so that a uniform hardening takes place. To achieve this, For example, when cutting edges to be hardened on both sides, grinding wheels can be perpendicular be arranged to both cutting edges or the cutting axis. It can be useful be to arrange several discs on both sides, which mesh like a comb.

Das Abschrecken erfolgt in irgendeiner bekannten Weise, beispielsweise durch einen Wasserstrahl, der bei Vorschubschleifen hinter der letzten Schleifscheibe durch Düsen aufgespritzt wird.The quenching is done in any known manner, for example by a jet of water that occurs behind the last grinding wheel during feed grinding is sprayed on through nozzles.

Sofern die Erwärmung durch Reibung allein nicht ausreichen sollte, um die erforderliche Härtetemperatur zu eireichen, so kann daneben noch eine andere Erwärmungsart verwendet weiden. Besonders geeignet ist dabei das induktive Erhitzen, da dieses sich am einfachsten kombinieren läßt.If the heating through friction alone should not be sufficient, In order to achieve the required hardening temperature, another one can be used Warming type used willow. Particularly suitable is that inductive heating, as this is the easiest to combine.

Claims (1)

PATENTANSPRÜCHE: r. Verfahren zum Härten von Werkstücken, dadurch gekennzeichnet, daß die Erwärmung mittels Reibungswärme, vorzugsweise durch Schleifscheiben, erzeugt wird. z. Verfahren nach Anspruch z zum Härten von Schneiden, dadurch gekennzeichnet, daß die Schleifwirkung beim Schärfen der Schneiden derart gesteigert wird, daß durch anschließendes Abkühlen oder Abschrecken die gewünschte Härtung erfolgt. 3. Verfahren nach Anspruch z oder z, dadurch gekennzeichnet, daß gleichzeitig eine induktive Zusatzerwärmung durchgeführt wird.PATENT CLAIMS: r. Method for hardening workpieces, thereby characterized in that the heating by means of frictional heat, preferably by grinding wheels, is produced. z. Method according to claim z for hardening cutting edges, characterized in that that the grinding effect when sharpening the cutting edge is so increased that by subsequent cooling or quenching, the desired hardening takes place. 3. Procedure according to claim z or z, characterized in that an inductive Additional heating is carried out.
DEA12171D 1941-06-20 1941-06-20 Process for hardening workpieces Expired DE880446C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA12171D DE880446C (en) 1941-06-20 1941-06-20 Process for hardening workpieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA12171D DE880446C (en) 1941-06-20 1941-06-20 Process for hardening workpieces

Publications (1)

Publication Number Publication Date
DE880446C true DE880446C (en) 1953-06-22

Family

ID=6922442

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA12171D Expired DE880446C (en) 1941-06-20 1941-06-20 Process for hardening workpieces

Country Status (1)

Country Link
DE (1) DE880446C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240905B (en) * 1957-01-04 1967-05-24 Heinrich Blechner Process for the production of surfaces of the greatest hardness on hardenable steels
DE19848033C1 (en) * 1998-10-17 2000-01-05 Bosch Gmbh Robert Apparatus for hardening boundary layers of workpieces
DE19848034C1 (en) * 1998-10-17 2000-01-13 Bosch Gmbh Robert Apparatus and method for hardening rotationally symmetric boundary layers not oriented parallel to the workpiece axis
EP1707306A4 (en) * 2004-01-21 2006-11-08 Univ Toyohashi Tech METHOD FOR PRODUCING AN ULTRA FINE CRYSTAL LAYER, AN ONE BY THE METHOD FOR PRODUCING AN ULTRA FINE CRYSTAL LAYER PRODUCED ULTRAFINE CRYSTAL LAYER HAVING MACHINE COMPONENT, METHOD FOR THE PRODUCTION OF MACHINE COMPONENT, METHOD FOR PRODUCING A NANO CRYSTAL LAYER ONE BY NANO CRYSTAL PRODUCED NANO CRYSTAL LAYER HAVING MACHINE COMPONENT
DE102014222366A1 (en) 2014-11-03 2016-05-04 Bayerische Motoren Werke Aktiengesellschaft Method for manufacturing an oil passage in a crankshaft

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240905B (en) * 1957-01-04 1967-05-24 Heinrich Blechner Process for the production of surfaces of the greatest hardness on hardenable steels
DE19848033C1 (en) * 1998-10-17 2000-01-05 Bosch Gmbh Robert Apparatus for hardening boundary layers of workpieces
DE19848034C1 (en) * 1998-10-17 2000-01-13 Bosch Gmbh Robert Apparatus and method for hardening rotationally symmetric boundary layers not oriented parallel to the workpiece axis
EP1707306A4 (en) * 2004-01-21 2006-11-08 Univ Toyohashi Tech METHOD FOR PRODUCING AN ULTRA FINE CRYSTAL LAYER, AN ONE BY THE METHOD FOR PRODUCING AN ULTRA FINE CRYSTAL LAYER PRODUCED ULTRAFINE CRYSTAL LAYER HAVING MACHINE COMPONENT, METHOD FOR THE PRODUCTION OF MACHINE COMPONENT, METHOD FOR PRODUCING A NANO CRYSTAL LAYER ONE BY NANO CRYSTAL PRODUCED NANO CRYSTAL LAYER HAVING MACHINE COMPONENT
US8382919B2 (en) 2004-01-21 2013-02-26 Toyohashi University Of Technology Process of forming nanocrystal layer
DE102014222366A1 (en) 2014-11-03 2016-05-04 Bayerische Motoren Werke Aktiengesellschaft Method for manufacturing an oil passage in a crankshaft

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