METHOD FOR PRODUCING DOOR PLATE AND DOOR PLATE PRODUCED BY THE SAME

摘要

The present invention relates to a method for manufacturing a door plate and, more specifically, to a method for manufacturing a door plate capable of being used in a vacuum chamber and improving the durability of the door plate and a sealing function. The method for manufacturing the door plate comprises a step for determining the flatness of one surface which touches a seal plate; a step for anodizing a part of the surface in which illumination is controlled; and a step for controlling the illumination by polishing the anodized surface.