阐述了铸件成品率与金属炉料有效率、铁液利用率、工艺出品率、铸件合格率四个比率的关系，指出了铸件成品率与铸造生产的全过程有关。
The relationship between casting yield and effective rate of metal charge, usage ratio of molten iron, technology yield and pass rate of castings were surveyed.
本发明提供一种能够将金属轧制板整体作为基板用材料进行使用，并能够较高地维持制造成品率的压模用基板的制造方法。
A process for producing a stamper substrate in which a rolled metal sheet can entirely be used as a substrate material to thereby enable maintaining high production yield.
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