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由于气缸套的结构特点,加工的表面积特别大,缩松的出现具有一定的代表性。为此我们为消除内燃机车 L207柴油机气缸套的缩松采取了如下几点措施。一、缸套的结构特征与原铸造工艺产生缩松的部位L207气缸套是形状复杂、外形细长的圆筒形零件,其尺寸为φ207×1090mm,长径比为5.26,较一般的高。因此在加工后铸件的缩松才暴露出来。铸件结构上以进、排气口为分界,相当于两个
Due to the structural characteristics of the cylinder liner, the processing of surface area is particularly large, the appearance of shrinkage has a certain representation. To this end, we have taken the following measures to eliminate the shrinkage of L207 diesel engine cylinder liner for diesel locomotives. First, the structural characteristics of the cylinder liner and the original casting process to produce loose parts L207 cylinder liner is a complex shape, elongated cylindrical parts, the size of φ207 × 1090mm, aspect ratio of 5.26, higher than the average. Therefore, after casting casting shrinkage was exposed. Casting structure to intake and exhaust as the boundary, the equivalent of two