DE102011007139A1 - Forming wear protection layer on cutting tool body, by applying layer systems, and providing electrochemical oxidation of metal- or metal alloy layer applied to tool body by physical vapor deposition- or chemical vapor deposition-method - Google Patents
Forming wear protection layer on cutting tool body, by applying layer systems, and providing electrochemical oxidation of metal- or metal alloy layer applied to tool body by physical vapor deposition- or chemical vapor deposition-method Download PDFInfo
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- DE102011007139A1 DE102011007139A1 DE201110007139 DE102011007139A DE102011007139A1 DE 102011007139 A1 DE102011007139 A1 DE 102011007139A1 DE 201110007139 DE201110007139 DE 201110007139 DE 102011007139 A DE102011007139 A DE 102011007139A DE 102011007139 A1 DE102011007139 A1 DE 102011007139A1
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- 239000010410 layer Substances 0.000 title claims abstract description 48
- 229910001092 metal group alloy Inorganic materials 0.000 title claims abstract description 26
- 239000002347 wear-protection layer Substances 0.000 title claims abstract description 17
- 238000006056 electrooxidation reaction Methods 0.000 title claims abstract description 8
- 238000000151 deposition Methods 0.000 title abstract 3
- 239000000126 substance Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000011195 cermet Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 238000002048 anodisation reaction Methods 0.000 claims 1
- 238000005229 chemical vapour deposition Methods 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 239000010936 titanium Substances 0.000 description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 229910010037 TiAlN Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000007743 anodising Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
- C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/58—After-treatment
- C23C14/5846—Reactive treatment
- C23C14/5853—Oxidation
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
- C23C8/42—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions only one element being applied
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Ausbilden einer Verschleißschutzschicht auf einem Schneidwerkzeugkörper sowie ein mit einer Verschleißschutzschicht versehenes Schneidwerkzeug.The invention relates to a method for forming a wear protection layer on a cutting tool body as well as to a cutting tool provided with a wear protection layer.
Das Beschichten von Schneidwerkzeugen, wie z. B. Bohr-, Fräs-, Senk-, Gewinde- oder Reibwerkzeugen, Schneidplatten, etc., deren Schneidkörper aus verschiedensten hochfesten Materialien, wie z. B. HSS-, Vollhartmetall- (VHM) oder Cermet-Werkstoffen, bestehen kann, ist mittlerweile zum Standard geworden, insbesondere wenn es darum geht, Werkstoffe zu zerspanen, deren Spanbildung bzw. -konsistenz das Werkzeug in besonderer Weise beansprucht, sei es durch eine besondere Zähigkeit oder Härte des Spans, sei es durch die besondere beim Zerspanen entstehende Spanform oder durch die speziell erforderlichen Schnittgeschwindigkeiten.The coating of cutting tools, such. As drilling, milling, lowering, threading or reaming tools, inserts, etc., the cutting body of various high-strength materials such. As HSS, solid carbide (VHM) or cermet materials may exist, has now become the standard, especially when it comes to cutting materials whose chip formation or consistency claimed the tool in a special way, whether by a special toughness or hardness of the chip, be it due to the special chip forming during chip removal or due to the specially required cutting speeds.
Neben Weichstoffschichten, die häufig zur Verbesserung der Spanabfuhr eingesetzt werden, finden überwiegend Hartstoffschichten Anwendung, beispielsweise TiC-, TiN-, (Ti,Al)N-, CrN-, Ti(C,N)- oder (Ti,Al)(C,N)-Schichten und deren Kombinationen, die überwiegend im PVD- oder CVD-Verfahren abgeschieden werden (vgl. z. B. die
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Ausbilden einer Verschleißschutzschicht auf einem Schneidwerkzeugkörper sowie ein mit einer Verschleißschutzschicht versehenes Schneidwerkzeug zu schaffen, das sich gegenüber den herkömmlich beschichteten Schneidwerkzeugen, durch verbesserte Eigenschaften, insbesondere eine erhöhte Standzeit, auszeichnet.The invention has for its object to provide a method for forming a wear protection layer on a cutting tool body and provided with a wear protection layer cutting tool, which is distinguished from the conventionally coated cutting tools, by improved properties, in particular an increased life.
Diese Aufgabe wird hinsichtlich des Verfahrens durch ein Verfahren gemäß dem Patentanspruch 1 und hinsichtlich des Schneidwerkzeugs durch ein Schneidwerkzeug gemäß dem Patentanspruch 8 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand abhängiger Ansprüche.This object is achieved with regard to the method by a method according to the patent claim 1 and with regard to the cutting tool by a cutting tool according to the patent claim 8. Advantageous developments are the subject of dependent claims.
Erfindungsgemäß erfolgt die Ausbildung der Verschleißschutzschicht in zwei Schritten. In einem ersten Schritt wird in herkömmlicher Weise durch beispielsweise ein CVD- oder PVD-Verfahren auf den Schneidwerkzeugkörper, der vorzugsweise aus einem HSS-, Vollhartmetall- oder Cermet-Werkstoff gebildet ist, ein ein- oder mehrlagiges Schichtsystem aufgebracht, dessen einzige (bei einem einlagigen Schichtsystem) bzw. dessen oberste Lage (bei einem mehrlagigen Schichtsystem) aus einem elektrochemisch oxidierbaren Metall oder einer elektrochemisch oxidierbaren Metall oder einer elektrochemisch oxidierbaren Metalllegierung, vorzugsweise aus Al, Cr, Si, Zr, Ti, Y, B, Ca, Mg oder deren Legierungen untereinander und/oder mit anderen Metallen besteht. In einem zweiten Schritt wird diese Schicht dann elektrochemisch oxidiert. Durch die elektrochemische Oxidation der auf den Schneidwerkzeugkörper aufgebrachten Metall- oder Metalllegierungsschicht wird eine Verschleißschutzschicht erzeugt, die im Vergleich zu den herkömmlich erzeugten Verschleißschutzschichten eine höhere Abriebsfestigkeit und geringere Spanreibung aufweist.According to the invention, the formation of the wear protection layer takes place in two steps. In a first step, in a conventional manner, for example by a CVD or PVD method on the cutting tool body, which is preferably formed from a HSS, solid carbide or cermet material, applied a single or multilayer coating system, the only one (in a einlagigen layer system) or its uppermost layer (in a multilayer coating system) of an electrochemically oxidizable metal or an electrochemically oxidizable metal or an electrochemically oxidizable metal alloy, preferably of Al, Cr, Si, Zr, Ti, Y, B, Ca, Mg or their alloys with each other and / or with other metals. In a second step, this layer is then electrochemically oxidized. The electrochemical oxidation of the metal or metal alloy layer applied to the cutting tool body produces a wear protection layer that has higher abrasion resistance and lower chip friction compared with the conventionally produced wear protection layers.
Zur Verbesserung der Schichthaftung und zur Verbesserung des Diffusionswiderstandes kann in einem allerersten Schritt unterhalb der oxidierbaren Metall- oder Metalllegierungschicht auf den Schneidewerkzeugkörper zusätzlich eine ein- oder mehrlagige Grundschicht aus bekannten nitridischen, carbidischen, carbonitridischen oder carboxinitridischen PVD- oder CVD-Schichtsystemen wie TiN, TiAlN, TiCN, TiAlSiN o. ä aufgebracht werden.In order to improve the layer adhesion and to improve the diffusion resistance, a single or multilayer base layer of known nitridic, carbidic, carbonitridic or carboxynitridic PVD or CVD layer systems such as TiN, TiAlN can additionally be applied to the cutting tool body below the oxidizable metal or metal alloy layer , TiCN, TiAlSiN or the like.
Die elektrochemische Oxidation der auf den Schneidwerkzeugkörper als ggf. einzige oder oberste Lage aufgebrachte Metall- oder Metalllegierungsschicht erfolgt vorzugsweise durch anodische Oxidation unter Funkenentladung und zwar vorzugsweise so, dass die Metall- oder Metalllegierungsschicht durch ihre gesamte Schichtdicke hindurch oxidiert wird.The electrochemical oxidation of the metal or metal alloy layer applied to the cutting tool body as a possibly single or topmost layer is preferably carried out by anodic oxidation with spark discharge, preferably in such a way that the metal or metal alloy layer is oxidized through its entire layer thickness.
Durch die bei einem derartigen Verfahren auftretenden Funkenentladungen entstehen sehr hohe Temperaturen von 3000 K–15000 K, die dazu führen, dass das auf den Schneidwerkzeuggrundkörper aufgebrachte Metall oder die auf den Schneidwerkzeuggrundkörper aufgebrachte Metalllegierung oberflächlich anschmilzt und oxidiert, wodurch eine keramikartige Oberfläche gebildet wird.The spark discharges occurring in such a method give rise to very high temperatures of 3000 K-15000 K, which cause the metal applied to the cutting tool main body or the metal alloy applied to the cutting tool main body to be superficially melted and oxidized, whereby a ceramic-like surface is formed.
Zur anodischen Oxidation unter Funkenentladung kann beispielsweise das von der KKS Ultraschall AG(CH) entwickelte SAA(Spark-Assisted Anodizing)-Verfahren oder ein von der KKS neu entwickeltes TiODark®-Verfahren angewendet werden. Informationen zu diesen Verfahren finden sich auf der Webseite der KKS Ultraschall AG (
Durch eine entsprechende Einstellung der Verfahrensparameter kann die Dicke der Verschleißschutzschicht gesteuert werden. Die Dicke der Verschleißschutzschicht liegt vorzugsweise im Bereich zwischen 0,1 und 20 μm, bevorzugt zwischen 3 und 10 μm.By a corresponding adjustment of the process parameters, the thickness of the wear protection layer can be controlled. The thickness of the wear protection layer is preferably in the range between 0.1 and 20 .mu.m, preferably between 3 and 10 .mu.m.
Die Verschleißschutzschicht kann den Schneidwerkzeugkörper abschnittsweise, d. h. an ausgewählten Funktionsabschnitten, z. B. nur die Schneidkantenabschnitte des Schneidwerkzeugs, oder vollständig überziehen.The wear protection layer, the cutting tool body sections, ie at selected functional sections, for. B. only the Cutting edge portions of the cutting tool, or completely cover.
Ein nach dem erfindungsgemäßen Verfahren geschaffenes Schneidwerkzeug zeichnet sich somit durch eine vergütete Verschleißschutzschicht aus. Beispiele für die nach dem erfindungsgemäßen Verfahren ausgebildete Verschleißschutzsicht sind Al2O3 Mullit (Al2O3-SiO2-Mischkristall), Spinell (Al2O3-MgO-Mischkristalle), Zirkonoxid mit verschiedenen Dotierungen sowie auch borhaltige Oxide.A created by the process according to the invention cutting tool is thus characterized by a coated wear protection layer. Examples of the wear protection view formed by the method according to the invention are Al 2 O 3 mullite (Al 2 O 3 -SiO 2 mixed crystal), spinel (Al 2 O 3 -MgO mixed crystals), zirconium oxide with various dopings as well as boron-containing oxides.
Der Schneidwerkzeugkörper bzw. das Schneidwerkzeug kann ein Bohrwerkzeug, eine Wendeschneidplatte, ein Gewindewerkzeug, ein Fräswerkzeug, ein Reibwerkzeug, ein Senkwerkzeug oder dergleichen sein. Gemeinsam ist diesen Schneidwerkzeugen zumindest eine geometrisch bestimmte Schneide, die als Schneidkante eines von einer Spanfläche und einer Freifläche begrenzten Schneidkeils definiert ist.The cutting tool body or the cutting tool may be a drilling tool, an indexable insert, a threading tool, a milling tool, a friction tool, a countersinking tool or the like. Common to these cutting tools is at least one geometrically determined cutting edge, which is defined as the cutting edge of a cutting surface bounded by a chip surface and an open surface.
Ein Beispiel für das erfindungsgemäße Verfahren sieht so aus, dass ein Schneidwerkzeug, z. B. Spiralbohrer, aus Vollhartmetall zunächst in einem ersten Schritt auf herkömmliche Weise in einem PVD-Verfahren vollständig mit einer Titan- oder Aluminiummetallschicht überzogen wird. In einem weiteren Schritt wird das so beschichtete Schneidwerkzeug dann einer anodischen Oxidation gemäß dem von der KKS Ultraschall AG(CH) entwickelten SAA(Spark-Assisted Anodizing)-Verfahren unterzogen. Dieses Verfahren ist ebenso wie das PVD-Verfahren grundsätzlich bekannt, so dass hierzu weitere Erläuterungen nicht erforderlich erscheinen. Durch eine Einstellung der Verfahrensparameter (Elektrolytzusammensetzung und Abscheidungsbedingungen (z. B. Spannung und elektrischer Strom)) kann die Tiefe des anodisch oxidierten Schichtbereichs eingestellt werden.An example of the method according to the invention provides that a cutting tool, for. As twist drill, solid carbide is first coated in a conventional manner in a conventional manner in a PVD process completely with a titanium or aluminum metal layer. In a further step, the thus coated cutting tool is then subjected to anodic oxidation according to the SAA (spark-assisted anodizing) method developed by KKS Ultraschall AG (CH). This method is basically known as well as the PVD method, so that further explanations do not appear to be necessary. By adjusting the process parameters (electrolyte composition and deposition conditions (eg, voltage and electric current)), the depth of the anodized layer can be adjusted.
In einem anderen Beispiel wurde ein Hartmetallbohrwerkzeug vom Typ Gühring RT100U ⌀ 6,8 mm wurde in einem Lichtbogenverdampfungs-PVD-Verfahren mit einer 3 μm dicken TiAlN-Schicht versehen, auf die ein 3 μm dicke Schicht, bestehend aus 70% Aluminium und 30% Si aufgebracht wurde. Dieses Werkzeug wurde im SAA-Verfahren oxidiert, so dass die Al-Si-Schicht zu 90% durchoxidiert wurde. Dabei wuchs die Schichtdicke der Deckschicht um 15% an. Folgend wurde der zwangsläufig auftretende, poröse Deckbereich der oxidierten Decklage durch eine Strahlbehandlung entfernt, so dass eine dichte oxidische Decklage entstand, die kristallographisch in Wesentlichen aus Mullit besteht. In einem Anwendungsversuch wurden die entstandenen Werkzeuge mit einer Schnittgeschwindigkeit von 110 m/min und einem Umdrehungsvorschub von 0,25 mm/U in 42CrMo4 getestet. Gegenüber nur mit der TiAlN-Schicht versehenen Werkzeugen war eine Standwegsteigerung um 30% zu beobachten.In another example, a Guhring RT100U cemented carbide drill bit ⌀ 6.8 mm was provided with a 3 μm thick TiAlN layer in an arc vaporization PVD process onto which a 3 μm thick layer consisting of 70% aluminum and 30% Si was upset. This tool was oxidized in the SAA process, so that the Al-Si layer was oxidized to 90%. The layer thickness of the cover layer increased by 15%. Subsequently, the inevitably occurring, porous cover region of the oxidized cover layer was removed by a blast treatment, so that a dense oxide cover layer was formed, which consists essentially of crystallographically mullite. In an application trial, the resulting tools were tested with a cutting speed of 110 m / min and a rotation of 0.25 mm / rev in 42CrMo4. Compared to only with the TiAlN layer provided tools was a stand path increase by 30% observed.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102005048474 A1 [0003] DE 102005048474 A1 [0003]
- DE 10347981 A1 [0003] DE 10347981 A1 [0003]
Zitierte Nicht-PatentliteraturCited non-patent literature
- www.kks-ultraschalich [0010] www.kks-ultraschalich [0010]
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201110007139 DE102011007139A1 (en) | 2011-04-11 | 2011-04-11 | Forming wear protection layer on cutting tool body, by applying layer systems, and providing electrochemical oxidation of metal- or metal alloy layer applied to tool body by physical vapor deposition- or chemical vapor deposition-method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201110007139 DE102011007139A1 (en) | 2011-04-11 | 2011-04-11 | Forming wear protection layer on cutting tool body, by applying layer systems, and providing electrochemical oxidation of metal- or metal alloy layer applied to tool body by physical vapor deposition- or chemical vapor deposition-method |
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| Publication Number | Publication Date |
|---|---|
| DE102011007139A1 true DE102011007139A1 (en) | 2012-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE201110007139 Pending DE102011007139A1 (en) | 2011-04-11 | 2011-04-11 | Forming wear protection layer on cutting tool body, by applying layer systems, and providing electrochemical oxidation of metal- or metal alloy layer applied to tool body by physical vapor deposition- or chemical vapor deposition-method |
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| Country | Link |
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| DE (1) | DE102011007139A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10347981A1 (en) | 2003-10-15 | 2005-07-07 | Gühring, Jörg, Dr. | Wear protection layer for cutting tools, in particular for rotating cutting tools |
| DE102005048474A1 (en) | 2005-10-07 | 2007-04-19 | Gühring Ohg | Cutting tool with cutting edge coating |
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2011
- 2011-04-11 DE DE201110007139 patent/DE102011007139A1/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10347981A1 (en) | 2003-10-15 | 2005-07-07 | Gühring, Jörg, Dr. | Wear protection layer for cutting tools, in particular for rotating cutting tools |
| DE102005048474A1 (en) | 2005-10-07 | 2007-04-19 | Gühring Ohg | Cutting tool with cutting edge coating |
Non-Patent Citations (1)
| Title |
|---|
| www.kks-ultraschalich |
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