| 摘要 |
PURPOSE:To obviate the use of spread powder and stabilize the quality of a fastening body by setting the surface roughness of said fastening body which comes in contact with an unfired body as a value ranging from Ra1 to 100mu and spraying abrasive grains, and carrying out cutting treatment. CONSTITUTION:Abrasive grains (#2000 SiC) are sprayed over one side of a square-shaped (200mm high X 200mm wide X 8mm thick) aluminum fastening body 1 where irregular fine projection and recessed parts 2 whose surface roughness ranges from Ra1 to 100mu is provided on one side (top). Each fastening body is used as a bottom board or weight stone. The laminated body (30mm dia. X 0.2mm thick) of an unfired PZT(Pb(Zr.Ti)O3) group ceramic body which serves as piezoelectric ceramics or the laminated body (50mm high X 50mm wide X 0.8mm thick) of an unfired body of alumina ceramics which serves as a circuit board undergo burning treatment. |
