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我们经过不断改进,从75年下半年开始用油砂芯金属外型的组合型铸造皮带轮,经过连续五年多的生产实践证明,这一工艺具有很多优点.铸件表面光洁,内部组织细密,有良好的耐磨性.正确操作能确保铸坯轮廓清晰,尺寸准确,表面光洁,壁厚均匀,平衡性好,皮带槽和锥衬孔各加工表面无缩孔、疏松、麻点,质量合格.金属型的使用寿命一般可达500~1000件次.
After continuous improvement, we have started to use a combination casting pulley with an oil sand core metal appearance since the second half of the year 75. After more than five years of production experience, this process has many advantages. The surface of the casting is smooth and the internal organization is fine. Good wear resistance. Correct operation ensures a clear outline of the slab, accurate dimensions, smooth surface, uniform wall thickness and good balance. There is no shrinkage, looseness and pitting on the machined surface of the belt groove and cone hole. Metal-type life of up to 500 to 1000 times in general.