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一、前言我们主要生产高速大功率船用柴油机的各种铝合金铸件,相对外厂同类型的柴油机,这些铸件一般尺寸都比较大,形线和内腔也比较复杂,因此,对型芯的强度要求比
I. INTRODUCTION We mainly produce all kinds of aluminum alloy castings for high speed and high power marine diesel engines. Compared with the same type of diesel engine, these castings are generally larger in size and more complex in shape and cavity. Therefore, Required ratio