| 摘要 |
PURPOSE:To eliminate the deformation of a copper block, and to leave a center pin as it is by forming a recess section for fixing the pin at the central section of a copper flange and making the plate thickness of the flange thicker than other sections. CONSTITUTION:The device is formed in structure in which the cathode electrode copper block 1 and the copper flange 3 are separated, and a copper disk piece 14 is bonded only to a section, to which a center pin hole 6 is shaped, through braze, etc. and thickness is increased. The cathode electrode copper block 1 is formed in a doughnut-shaped disk, and positioned in the horizontal direction by means of a stage molded to the copper flange 3. Since the electrode copper block 1 and the copper flange 3 are not brazed, thermal deformation is not generated, and excessive processes are unnecessitated. |
