Blank for magnetic hard disk and method for producing same
    3.
    发明授权
    Blank for magnetic hard disk and method for producing same 失效
    磁盘硬盘及其制造方法

    公开(公告)号:US5965230A

    公开(公告)日:1999-10-12

    申请号:US784922

    申请日:1997-01-16

    CPC classification number: G11B5/7315 G11B5/8404 Y10S428/90 Y10T428/24355

    Abstract: A blank for magnetic hard disk and a method for producing the same are provided, characterized in that the attachment or adhesion of a blank of a disk shape to each other can be prevented when such blank is stacked together for disk annealing, thereby improving the productivity of magnetic hard disk, and that the damage of blank surface can be prevented during blanking. Firstly, an aluminium alloy plate is subjected to continuous surface washing process with an etching solution while winding off the aluminium alloy plate in a coil, whereby the oxide film on the surface of the aluminium alloy plate is removed to concurrently deposit insoluble smut on the surface. Then, the aluminium alloy plate after the washing process is pressed for blanking thereof into a blank of a disk shape.

    Abstract translation: 提供了一种用于磁性硬盘的坯料及其制造方法,其特征在于,当将这种坯料堆叠在一起用于圆盘退火时,可以防止将盘状的坯料彼此附接或粘附,从而提高生产率 的磁性硬盘,并且可以在消隐期间防止空白表面的损坏。 首先,将铝合金板在蚀刻溶液中进行连续表面洗涤,同时将线圈中的铝合金板卷绕,从而去除铝合金板表面上的氧化膜,同时在表面上沉积不溶物 。 然后,将洗涤处理后的铝合金板压制成盘状的坯料。

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