DE915570C - Tools manufactured by powder metallurgy with differently composed cutting and carrying parts - Google Patents

Tools manufactured by powder metallurgy with differently composed cutting and carrying parts

Info

Publication number
DE915570C
DE915570C DEB5403D DEB0005403D DE915570C DE 915570 C DE915570 C DE 915570C DE B5403 D DEB5403 D DE B5403D DE B0005403 D DEB0005403 D DE B0005403D DE 915570 C DE915570 C DE 915570C
Authority
DE
Germany
Prior art keywords
cutting
powder metallurgy
powder
differently composed
carrying parts
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
DEB5403D
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.)
Gebrueder Boehler and Co AG
Original Assignee
Gebrueder Boehler and Co 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 Gebrueder Boehler and Co AG filed Critical Gebrueder Boehler and Co AG
Priority to DEB5403D priority Critical patent/DE915570C/en
Application granted granted Critical
Publication of DE915570C publication Critical patent/DE915570C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00Supplementary information concerning processes or compositions relating to powder metallurgy

Description

Auf pulvermetallurgischem Wege hergestellte Werkzeuge mit verschieden zusammengesetztem Schneid- und Tragteil Bei Schnellstahlwerkzeugen verwendet man vielfach zum Zweck der Ersparung von Legierungselementen unlegierte Stahlträger, die eine Panzerung durch Aufschweißen von Schnellstahl oder durch Auflöten von geformten Schnellstahlplättchen erhalten. Beim Aufschweißen besteht der Nachteil, daß die Schweißraupe aus Schnellstahl spanabhebend und durch Schleifen in die endgültige Gestalt gebracht werden muß, wodurch Arbeitszeit- und Materialverluste entstehen, während die durch Auflöten hergestellte Verbindung keiner schweren Beanspruchung gewachsen ist.Tools manufactured by powder metallurgy with different composite cutting and carrying part often unalloyed steel girders for the purpose of saving alloying elements, armoring by welding on high-speed steel or by soldering on shaped ones Obtained high-speed steel plates. When welding there is the disadvantage that the Welding bead made of high-speed steel by cutting and grinding into the final Must be brought into shape, resulting in loss of working time and material, while the connection made by soldering is not subjected to heavy stress has grown.

Es ist bereits ein Verfahren zur Herstellung von Werkzeugen mit an- oder eingefügten Hartmetallteilen beschrieben worden, bei dem die gleichzeitige Herstellung des eigentlichen Trägers und des dazugehörigen Hartmetallteiles auf sintermetallurgischem Wege erfolgt. Dieses bekannte Verfahren besteht z. B. darin, daß man in einer dem herzustellenden Gegenstand entsprechenden Form das eine Metall in Pulverform vorpreßt, sodann zur Verhinderung der Vermischung eine Metallfolie oder ein Metallgewebe einlegt und danach das Metall des anderen Teiles in Pulverform einfüllt und fertigpreßt. In den Fällen, wo eine Vermischung der beiden Pulverarten nicht zu befürchten ist, kann auch das Einfügen der Metalltrennfolie unterbleiben.There is already a process for the production of tools with different or inserted hard metal parts have been described, in which the simultaneous Production of the actual carrier and the associated hard metal part sintered metallurgical way. This known method consists e.g. B. in that one metal in a form corresponding to the object to be manufactured in powder form, then a metal foil to prevent mixing or insert a metal mesh and then the metal of the other part in powder form filled in and finished pressing. In cases where there is a mixture of the two types of powder is not to be feared, the insertion of the metal separating film can also be omitted.

Ferner ist die Herstellung gesinterter metallischer Körper bekannt, die zumindest aus zwei verschiedenen zusammengesinterten Bestandteilen bestehen, in denen ein im Verhältnis zum Eisen schwer schmelzbares Metall, wie Wolfram, Molybdän od, dgl., und bzw. oder Hartstoffe, wie Karbide, Nitride, Silicide, Boride, enthalten sind und bei denen sich die Anteile an schwer schmelzbarem Metall bzw. an Hartstoff in mindestens einer Richtung kontinuierlich ändern.Furthermore, the production of sintered metallic bodies is known, which consist of at least two different components sintered together, in a metal that is difficult to melt in relation to iron, such as tungsten or molybdenum od, the like., and / or hard materials such as carbides, nitrides, silicides, borides and in which the proportions of hard-to-melt metal or hard material are change continuously in at least one direction.

Derartige Körper können für die Metallbearbeitung eine Arbeitsfläche mit sehr großer Härte aufweisen. Die Herstellung erfolgt aus einer Mischung von Karbiden u. dgl., wobei die Gehalte an beigemengtem Hilfsmetall, z. B. Kobalt, Nickel und Eisen, mehr oder weniger kontinuierlich in der Richtung von der Arbeitsfläche weg ansteigen.Such bodies can be used as a work surface for metalworking with very great hardness. It is made from a mixture of Carbides and the like, the contents of added auxiliary metal, e.g. B. cobalt, nickel and iron, more or less continuously in the direction of the work surface rise away.

Schließlich ist ein Verfahren zur Herstellung von Verbundmetallen bekanntgeworden, bei dem die einzelnen Schichten aus den entsprechenden Metallpulvern gepreßt und gemeinsam gesintert werden. Durch eine nachträgliche Wärmebehandlung ist eine teilweise oder vollständige Homogenisierung erzielbar.Finally, there is a method of making composite metals became known, in which the individual layers of the corresponding metal powders pressed and sintered together. By subsequent heat treatment partial or complete homogenization can be achieved.

Trotz der hervorragenden Härte der Hartlegierungen haben sich auf verschiedenen Gebieten, wie beim Bohren, Fräsen, Sägen, Räumen und Gewindeschneiden, die Schnellstähle behaupten können. Beim Bohren zäher Metalle werden z. B. beim Herausbefördern des Spans aus dem Bohrloch die spröden Hartmetalle leicht verletzt. Die Erfindung trägt diesen Umständen Rechnung und besteht darin, daß Werkzeuge, insbesondere kleinere Bohrer, Fräser usw., mit verschieden zusammengesetztem Schneid- und Tragteil auf pulvermetallurgischeiri Wege derart hergestellt werden, daß Schnellstahlpulver für den Schneidteil und Kohlenstoffstahlpulver für den Tragteil unter Herbeiführung eines verlaufenden Überganges zwischen den beiden Pulverarten gemeinsam gesintert werden.Despite the excellent hardness of the hard alloys have become various areas, such as drilling, milling, sawing, broaching and thread cutting, which high-speed steels can claim. When drilling tough metals z. B. at Conveying the chip out of the borehole easily injures the brittle hard metals. The invention takes these circumstances into account and consists in the fact that tools, especially smaller drills, milling cutters, etc., with differently composed cutting and supporting part are manufactured by powder metallurgy methods in such a way that high-speed steel powder for the cutting part and carbon steel powder for the supporting part under induction a smooth transition between the two types of powder sintered together will.

Die erfindungsgemäßen Schnellstahlverbundwerkzeuge, die einen aus Schnellstahl bestehenden Schneidteil und einen verlaufenden Übergang zum Tragteilmaterial aufweisen, vermeiden die Nachteile der unter Löten der Schneide auf den Träger aus unlegiertem Stahl hergestellten Werkzeuge.The high-speed steel composite tools according to the invention, which one from High-speed steel existing cutting part and a smooth transition to the supporting part material have, avoid the disadvantages of soldering the cutting edge onto the carrier tools made of carbon steel.

Claims (1)

PATENTANSPRUCH: Auf pulvermetallurgischem Wege hergestellte Werkzeuge mit verschieden zusammengesetztem Schneid- und Tragteil, dadurch gekennzeichnet, daß Schnellstahlpulver für den Schneidteil und Kohlenstoffstahlpulver für den Tragteil unter an sich bekannter Herbeiführung eines verlaufenden Überganges zwischen den beiden Pulverarten gemeinsam gesintert werden.PATENT CLAIM: Tools manufactured by powder metallurgy with differently composed cutting and support parts, characterized in that that high-speed steel powder for the cutting part and carbon steel powder for the supporting part with a known transition between the both types of powder are sintered together.
DEB5403D 1944-10-24 1944-10-24 Tools manufactured by powder metallurgy with differently composed cutting and carrying parts Expired DE915570C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB5403D DE915570C (en) 1944-10-24 1944-10-24 Tools manufactured by powder metallurgy with differently composed cutting and carrying parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB5403D DE915570C (en) 1944-10-24 1944-10-24 Tools manufactured by powder metallurgy with differently composed cutting and carrying parts

Publications (1)

Publication Number Publication Date
DE915570C true DE915570C (en) 1954-07-26

Family

ID=6953993

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB5403D Expired DE915570C (en) 1944-10-24 1944-10-24 Tools manufactured by powder metallurgy with differently composed cutting and carrying parts

Country Status (1)

Country Link
DE (1) DE915570C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111600A1 (en) * 1982-12-13 1984-06-27 Reed Rock Bit Company Improvements in or relating to cutting tools
US4911625A (en) * 1986-09-18 1990-03-27 The British Petroleum Company, P.L.C. Method of making graded structure composites
WO2002042024A1 (en) * 2000-11-22 2002-05-30 Sandvik Ab Multiple grade cemented carbide inserts for metal working and method of making the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111600A1 (en) * 1982-12-13 1984-06-27 Reed Rock Bit Company Improvements in or relating to cutting tools
US4911625A (en) * 1986-09-18 1990-03-27 The British Petroleum Company, P.L.C. Method of making graded structure composites
WO2002042024A1 (en) * 2000-11-22 2002-05-30 Sandvik Ab Multiple grade cemented carbide inserts for metal working and method of making the same
US6685880B2 (en) 2000-11-22 2004-02-03 Sandvik Aktiebolag Multiple grade cemented carbide inserts for metal working and method of making the same

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