在我国众多铸造厂中、尽管各级领导和广大技术人员都很重视铸造质量的提高,但铸造中的缺陷在所难免,尤其是小型乡镇铸造厂,技术力量薄弱、设备简陋、常因铸造砂眼、气孔造成废品率较高,给企业带来巨大的经济损失。 In many foundries in our country, although the leadership and technical staff at all levels attach great importance to improving the quality of foundry, but the casting defects are inevitable, especially in small towns foundry, weak technical force, simple equipment, often due to casting trachoma , Porosity caused by a higher rejection rate, to bring huge economic losses to the enterprise.