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

摘要

The present invention relates to a method to produce a door plate and, more specifically, relates to a method to produce a door plate used in a vacuum chamber to improve durability of a door plate and improve a sealing function. The method to produce a door plate comprises: a step of determining a flatness of one surface which comes in contact with a sealing plate; a step of anodizing a portion of a surface whose illuminance is adjusted; and a step of adjusting the illuminance of the anodized surface through a polishing process.