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US 4,579,705 AGranted
Process for producing ceramic products
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorsHideyuki Matsuoka, Hajime Tai, Yuji Yoshida, Koichi Inoue, Toshiharu Murayama
Life of this patent
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Abstract
A process for producing ceramic products such as turbine rotors comprises the steps of contouring a prefired ceramic roughly or primarily formed workpiece into a desired shape by means of a rod-shaped cutting tool having a working end or tip to which abrasive particles have been secured, said tool being rotated about its axis; subjecting the contoured surface of said workpiece to an abrasive finishing; and thereafter firing said workpiece thus finished.
Claims8
A process for producing a ceramic product which comprises:
- providing a jig and means for mounting a workpiece on said jig;
- forming ceramic starting materials into a roughly formed structure;
- prefiring said structure under conditions to produce a formed prefired workpiece having properties suitable for machining thereof;
- mounting said workpiece on said jig via said mounting means in such a manner that said mounting means is detachable from said jig;
- contouring by first subjecting the upper surface of the workpiece to a fluting process to a depth sufficient to prevent cracking during subsequent machining, and then by machining said workpiece into a desired shape by means of a cutting tool having a working tip bearing abrasive particles secured to the surface thereof, said cutting tool being rotated;
- finishing the contoured surface of said workpiece thus contoured;
- and
- firing said workpiece thus finished.
5 more elements
Dependencies are inferred from the claim text.