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PC－64锤式破碎机主要在多级破碎中作细破使用，允许最大入料粒度为100mm，广泛应用在小型石料场和水泥厂。若能将入科粒度提高到200mm，该机可直接破碎采石场的石料。为此，我们将破碎腔进行了改造。图1为改进前的结构。大块物料进入破碎机后，由于给料导板倾斜角度小（只有40
PC-64 hammer crusher is mainly used for fine broken in multi-level crushing, allowing the maximum feed size of 100mm, widely used in small-scale stone field and cement plant. If the particle size can be increased to 200mm, the machine can directly crush quarry stone. To this end, we have to transform the crushing chamber. Figure 1 shows the structure before improvement. Large pieces of material into the crusher, due to the feeding guide tilting angle is small (only 40