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在机械产品中,铸造箱体类和机座类零件有相当大的比重,这类零件精度要求高,结构复杂,不规则,局部变薄、增厚的现象比较普遍,铸件多为单件、小批量生产,受生产条件、工艺流程等多方面因素的影响,气孔、夹砂、裂纹等铸造缺陷多有发生。在粗加工时去除余量有限,许多缺陷不能及时发现而流入精加工工序,后期发现某些部位的加工受到影响,因此,如何及时采取适当的挽救措施,对提高产品质量、保证生产进度和降低生产成本有重要意义。
In mechanical products, castings and chassis parts have a considerable proportion of such parts precision demanding, complex structure, irregular, local thinning, thickening of the phenomenon is more common, the casting is more than a single piece, Small batch production, production conditions, process and many other factors, porosity, sand, cracks and other casting defects have occurred. In the roughing process to remove the remaining margin is limited, many defects can not be found in time and flow into the finishing process, the latter part of the processing found to be affected, therefore, how to take appropriate timely rescue measures to improve product quality and ensure the progress of production and reduce Production costs have important implications.