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在铸造复杂铸件的过程中,制造砂型和坭心要占整个生产劳动量的60—70%;因此,降低制造砂型和坭心的劳动量,是降低生产成本最重要的途径之一。
In the process of casting complex castings, the manufacture of sand molds and spindles accounts for 60-70% of the total production labor; therefore, reducing the amount of labor required to make sand and spats is one of the most important ways to reduce production costs.