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矿山机械的某些大型轴类零件如提升机主轴、减速器主轴等,在产品探伤或使用检修过程中,有时在轴芯附近会发现一些缺陷,象夹杂,气孔、白点、裂纹等,这些缺陷的存在对轴的强度是有害的。对于区域尺寸不大的缺陷,常采用的一种方法是沿轴线打孔来消除它。一些实践表明这是一种有效的方法。但是这种方法的定量分析尚无文献可查。例如,钻孔后空心轴的强度与实心轴的强度相比降低
Some large-scale mining machinery shaft parts such as hoisting machine spindles, reducer spindles, etc., in the product testing or the use of repair process, sometimes found some defects near the axis, such as inclusions, pores, white spots, cracks, etc. The presence of defects is detrimental to the strength of the shaft. One of the common approaches to defect size is to drill along the axis to eliminate it. Some practice shows that this is an effective method. However, there is no literature on the quantitative analysis of this method. For example, the strength of a hollow shaft after drilling decreases compared to the strength of a solid shaft