我厂M345型熔模铸造自动制壳机,于一九七六年四月投产。为使电气控制系统更完善,于一九七六年六月,在兰州炼油厂自动化研究所的帮助下,设计制造了M345型熔模铸造自动制壳机的电子程序控制器(见标题图)。该电子程序控制器与用普通电气元件制造的控制柜相比,具有如下优越性: 1.使用可靠、维修方便,发生故障时只 Our factory M345 investment casting automatic shell making machine, put into operation in April 1976. In order to further improve the electrical control system, in June 1976, with the help of Lanzhou Refinery Automation Institute, an electronic program controller for the M345 automatic mold-making machine was designed and manufactured (see the title map) . Compared with the control cabinet made of common electrical components, the electronic program controller has the following advantages: 1. The use of reliable, easy maintenance, only the failure