废品：目测不合格或尺寸超差并且无法修复的产品；无法达到图纸公差要求的产品。

SCRAP : When product that is either visually or dimensionally out of tolerance and can not be repaired; product that does not conform to blueprint tolerances.

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据统计，铸件废品有50％是由于型砂不合格造成的，而砂子温度、含灰量的多少又是影响型砂性能的重要因素。

Scraps up to 50% are statistically due to the unqualified molding sand and the main influential factors are sand temperature and amount of dust.

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