【摘要】 采用时间继电器来控制型砂处理线上各种给料设备的工作顺序及工作时间，以保证混砂的工艺要求，提高型砂的质量更多还原

【Abstract】 In this paper, it is introduced that time relay is adopted on sand mould handle line to control the working procedure and working hour of various grant expect equipment so as to guarantee the technological points of mixing sand and improve the quality of sand mould.更多还原