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Flame Sprayed EDM Electrodes

IP.com Disclosure Number: IPCOM000090560D
Original Publication Date: 1969-May-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Gonnella, NT: AUTHOR [+2]

Abstract

To prepare a high tolerance debossed part by electro discharge machining EDM, it is necessary to first construct an equally high tolerance embossed electrode. Because of the high erosion rate of the EDM process, the electrode thus produced is able to make only a few steel parts and less than one part from tungsten carbide. It is desirable that the electrode possess high tolerance. As at A, master pattern 10 has debossed end surface 11. At B a plasma flame spray coating 12 which can be any metal carbide or conductive material is applied to the pattern surface. Shank member 14 of a configuration to fit the EDM machine to be used is bonded to coating 12 by bonding material 15 such as solder or an adhesive agent. Finally, the coating is parted from the pattern to form a completed EDM electrode.

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Flame Sprayed EDM Electrodes

To prepare a high tolerance debossed part by electro discharge machining EDM, it is necessary to first construct an equally high tolerance embossed electrode. Because of the high erosion rate of the EDM process, the electrode thus produced is able to make only a few steel parts and less than one part from tungsten carbide. It is desirable that the electrode possess high tolerance.

As at A, master pattern 10 has debossed end surface 11. At B a plasma flame spray coating 12 which can be any metal carbide or conductive material is applied to the pattern surface. Shank member 14 of a configuration to fit the EDM machine to be used is bonded to coating 12 by bonding material 15 such as solder or an adhesive agent. Finally, the coating is parted from the pattern to form a completed EDM electrode. The pattern can be thus used repeatedly requiring only one Part to be fabricated by high tolerance machining.

It can also be suitable in some environments to part coating 12 from pattern 10 and then bond to the shank 14.

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