EP0365506A2
Expired / Lapsed
EP
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Method of making a hard material in the area between cemented carbide and high speed steel
Assignee: Sandvik AB
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Filing: 1989-10-13
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Granted: —
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Expires: 2009-10-13
Abstract
Abstract According to the invention a cutting tool material can be made by mixing 25 - 75 % by volume of high speed steel powder with 75 - 25 % by volume of a hard material powder containing 30 - 70 % by volume of hard principles based upon carbides, nitrides, oxides and/or borides of Ti, Zr, Hf, V, Nb, Ta, Mo, Cr and/or W and a binder metal based upon Fe, Ni and/or Co. The material can be used in solid cutting tools as well as in compound tools comprising said cutting tool material in combination with high speed steel or tool steel.
Inventors
- 👤 Peder Von Holst
- 👤 Hakan Morberg
- 👤 Rolf Oskarsson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 15:07
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0292; C22C33/0207; C22C33/0285
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
89 words
Method of making a cutting tool material characterized in, that 25 - 75 % by volume of a hard material powder comprising 30 - 70 % by volume of hard principles based upon carbides, nitrides, oxides and/or borides of Ti, Zr, Hf, V, Nb, Ta, Mo, Cr and/or W and a binder metal based on Fe, Ni and/or Co and 25 - 75 % by volume of granulated high speed steel powder are compacted in solid state, preferably by means of mixing/milling, cold isostatic pressing (CIP) and hot extrusion.
Claim 2
Dependent Claim
89 words
Method of making a cutting tool material characterized in, that 25 - 75 % by volume of a hard material powder comprising 30 - 70 % by volume of hard principles based upon carbides, nitrides, oxides and/or borides of Ti, Zr, Hf, V, Nb, Ta, Mo, Cr and/or W and a binder metal based on Fe, Ni and/or Co and 25 - 75 % by volume of granulated high speed steel powder are compacted in solid state, preferably by means of mixing/milling, cold isostatic pressing (CIP) and hot extrusion.
Claim 3
Dependent Claim
16 words
Method according to claim 1 characterized in, that the material is solidly used in a tool.
Claim 4
Dependent Claim
76 words
Method according to claim 1 characterized in, that the material forms at least one part of a compound tool, which additionally comprises at least one part of high speed steel, tool steel or of a hard material powder comprising 30 - 70 % by volume of hard principles based upon carbides, nitrides, oxides and/or borides of Ti, Zr, Hf, V, Nb, Ta, Mo, Cr and/or W and a binder metal based on Fe, Ni and/or Co.
Claim 5
Dependent Claim
19 words
Method according to any of the preceding claims characterized in, that the tool is provided with a welded shaft.
Claim 6
Dependent Claim
18 words
Method according to any of the preceding claims characterized in, that the high speed steel powder is cobalt-alloyed.
Claim 7
Dependent Claim
21 words
Method according to any of the claims 1 - 4 characterized in, that the high speed steel powder is without cobalt.
Claim 8
Dependent Claim
47 words
Method according to any of the claims 1 - 4 or 6 characterized in, that the high speed steel powder is of type M2 comprising 0.9 % C, 4.0 % Cr, 5.0 % Mo, 6.5 % W, 2 % V, and the rest Fe besides normal impurities.
References Cited (Backward Citations)
No citation records indexed.
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