湖北省荆门市沙洋砖瓦厂是年生产1亿至1.1亿烧结普通砖的砖瓦厂.砖坯生产分两个车间,各年产5000～5500万块砖坯.在1990年前生产中每年约报废两根搅拌机主动轴(包括断后多次焊接至不能使用时),甚至有时新轴使用不到一个月就断裂.我们对断轴破坏情况作了研究、分析,情况如下. The Jingyang Shayang brick and tile factory in Hubei Province is a brick and tile factory that annually produces 100 to 110 million cubic meters of sintered ordinary bricks. The bricks production is divided into two workshops, each with an annual output of 5,000 to 55 million bricks. The annual production before 1990 is about Two agitator shafts were scrapped (including several times after disconnection until they could not be used), and sometimes the new shaft was broken in less than a month. We studied and analyzed the failure of the broken shaft. The situation is as follows.