Abrégé

The invention relates to a blank made of an edm graphite and to a method for producing an edm graphite electrode from said blank by cutting the blank to length, thereby obtaining an electrode blank, and subsequently contouring the electrode blank. Storage and production costs are reduced by using a standardized undercut in the form of a continuous elongated groove, and an adapter for securing the blank, the electrode blank, or the EDM graphite electrode over the standardized rear engagement allows a more effective application of the electrode blank and the EDM graphite electrode.

Classes IPC  ?

• B23H 7/22 - Électrodes spécialement adaptées à cet effet ou leur fabrication
• B23H 7/24 - Matériaux pour électrodes
• B23H 7/26 - Appareils pour déplacement ou positionnement de l'électrode par rapport à la pièceMontage de l'électrode
• B23H 3/06 - Matériaux pour électrodes

Abrégé

Improved workpiece-carrier in the form of a high-temperature-grating 10 assembled from mutually engaging elements consisting of carbon-fibre- reinforced carbon-composite-board-strips comprising comb-shaped elements, having a frame surrounding a horizontal grating as well as at least one workpiece-support (40) which is inert in relation to the supported workpiece and provides a workpiece-support-area (50) at a distance above the grating (3O)7 said work-piece-support (40) being arranged within at least one enclosing cut-out-section of at least one element wherein furthermore said elements comprise at least one element having interlocking cut-out-sections in alternating arrangement, at least one auxiliary element, said workpiece- support (40) is a single-piece part of high temperature ceramic of rod-shaped elongation being arranged parallel to the plane of said grating (30) and being an integral part of the grating by being enclosed beneath the workpiece- support-area (50) by cut-out-sections of a multitude of crosswise arranged grating-elements while also being framed at its ends by crosswise arranged continuous elements, the enclosed, non-removable workpiece-support being floatingly integrated within the grating and the workpiece-carrier being fastened in assembled position by the at least one auxiliary element, wherein each comb-shaped element has at least one auxiliary bore with an auxiliary element arranged tightly and form-fittingly in said auxiliary bore and each auxiliary element being furthermore arranged tightly and form-fittingly in at least one auxiliary bore of the at least one element having interlocking cut-out-sections in alternating arrangement.

Classes IPC  ?

• F27D 5/00 - Supports, grilles ou appareillage analogue pour la charge à l'intérieur du four
• C21D 9/00 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet