graining sand 中文意思是什麼
graining sand
解釋
磨版砂-
To make graining aluminum alloys surface nowadays is mainly sand spraying. nevertheless, sand spraying requires many expensive and restricted facilities ; besides, it needs high working strength and is difficult for us to mass - produce. mass quality of sand spraying products is not conformed but with a high production cost
現今鋁合金的表面砂紋處理主要是採用機械噴砂工序，但噴砂工序需要昂貴的專用設備，勞動強度高卻量產困難，批量品質難以一致，而且成本高，並受工件尺寸和幾何形狀的限制，對于薄鋁片噴砂后更有變形現象
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