EP0001184A2
Expired / Lapsed
EP
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Wire drawing die composites
Assignee: De Beers Industrial Diamond Division Pty Ltd
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Filing: 1978-09-11
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Granted: —
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Expires: 1998-09-11
Abstract
Abstract A wire-drawing die blank comprising a diamond or cubic boron nitride abrasive compact, a mass of metal bonded carbide surrounding the compact and providing it with symmetrical support and a metal layer bonding the carbide mass to the abrasive compact, the metal of the bonding layer being tantalum or an alloy containing tantalum. The blank is converted into a wire-drawing die composite by providing the compact with a centrally located hole extending therethrough.
Inventors
- 👤 Rainer Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 20:28
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; B; B21; B21C; B21C3/00; B21C3/02; B21C3/025; B22; B22F; B22F7/00; B22F7/06; B22F7/062; B22F7/064; B22F2998/00; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/122; C04B2237/30; C04B2237/32; C04B2237/36; C04B2237/361; C04B2237/363; C04B2237/40; C04B2237/401; C04B2237/50; C04B2237/70; C04B2237/708; C04B2237/76
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
55 words
A wire drawing die blank comprising a diamond or cubic boron nitride abrasive compact, a mass of metal bonded carbide surrounding the compact and providing it with . symmetrical support and a metal layer bonding the carbide mass to the abrasive compact, the metal of the bonding layer being tantalum or an alloy containing tantalum.
Claim 2
Dependent Claim
55 words
A wire drawing die blank comprising a diamond or cubic boron nitride abrasive compact, a mass of metal bonded carbide surrounding the compact and providing it with . symmetrical support and a metal layer bonding the carbide mass to the abrasive compact, the metal of the bonding layer being tantalum or an alloy containing tantalum.
Claim 3
Dependent Claim
23 words
A wire drawing die blank of claim 1 wherein the thickness of the layer is in the range 0,01 mm to 0,25 mm.
Claim 4
Dependent Claim
27 words
A wire drawing die composite comprising a blank according to either one of the preceding claims wherein the compact is provided with a centrally-located hole extending therethrough.
Claim 5
Dependent Claim
13 words
A composite according to claim 3 wherein the hole is a double-tapered hole.
References Cited (Backward Citations)
No citation records indexed.
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