铸工车间于守政铸铜小组共七名工人,其中五名是工作才一年至二年的青年工人,另有组长及一名技术工人。该组在五O年前经常完不成任务,质量低,废品率平均已达20%左右,最高竟达50%,其原因不外乎: (一)材料成份杂乱不分。 (二)熔化温度控制不适当。 (三)使用旧的保守的开水口方法, The Casting Workshop consists of a total of seven workers in the ShouZhou Casting Group, of whom five are young workers who work for one to two years and another leader and one skilled worker. The group often failed the task five years ago, low quality, rejection rate has reached an average of about 20%, up to 50%, the reason is nothing more than: (A) the composition of the material messy. (B) the melting temperature control is not appropriate. (C) the use of the old conservative method of opening the water,