针对铸件易出现冲砂、砂眼、气孔和冷隔等缺陷,导致废品率高的问题,对原有的生产工艺进行了改进,包括浇注系统和冷铁位置、工艺装备及严守操作规程等。改进后的工艺方案,减少了冲砂、砂眼、气孔和冷隔等缺陷,保证了产品的质量,废品率降低到4%以下。 For castings prone to red sand, trachoma, porosity and cold insulation defects, leading to the problem of high rejection rate, the original production process has been improved, including the pouring system and the location of cold iron, process equipment and strict adherence to operating procedures. The improved process scheme reduces defects such as sand blasting, blistering, porosity and cold separation, and ensures the quality of the product. The reject rate is reduced to less than 4%.