Visual Testing of Silver Alloy Rods Appearance

Visual testing as a method of nondestructive detection is widely used for surface defect of the intermediate working procedure of silver alloy bars. This paper mainly introduces different defects in the fabrication process of silver rods, and elaborates the cause of these surface defects. At present these is no any unified standards in visual testing industry, which makes the detecting processing very aimless. The author suggests that normative standard should be established.