一、压实实砂试验的意义压实造型是机器造型中,设备简单,生产率高,噪音小的一种造型方法。压实造型的紧砂方法主要是压实实砂,压实实砂的先天不足就是紧实度分布不均匀。压实实砂砂型内部紧实度分布情况怎样?有些什么规律?适用于什么样零件?找出这些规律来,对于更好地发挥压实实砂的优点,避免其缺点,扩大它的应用范围是很有意义的。 First, the significance of compaction of sand test Compaction modeling is the machine shape, the device is simple, high productivity, low noise, a modeling method. Compact sand compacting method is mainly compacted sand, compacted sand is the inherent deficiencies in the uneven distribution of solidity. Compacted real sand sand compactness of the internal distribution of what? Some rules? For what kind of parts? Find out these rules, to better play the advantages of compacted sand, to avoid its shortcomings, to expand its scope of application It makes sense.