论文部分内容阅读
随着我国机械工业的发展,熔模精密铸造得到了广泛的应用,种类不断扩大,产量不断增加。与其同时,结合我国资源条件和生产中出现的实际问题,广大工人和技术人员大搞技术革新,尤其是在“三代替”上取得了显著成绩。一、代替通用蜡料长期以来,熔模精密铸造应用石蜡—硬脂酸作模型材料。此材料的优点是:熔点低,组成简单,配制工艺简便。但突出的弱点是热稳定性差,通常在30℃左右即变形。在夏季,特别是在南方,蜡模更易软化变形。造成模型尺
With the development of China’s machinery industry, investment casting has been widely used, the type has been expanding, the output continues to increase. At the same time, in line with the actual conditions of our country’s resources and production, the majority of workers and technicians vigorously engage in technological innovations, especially in the “three instead of” remarkable achievements. First, instead of universal wax For a long time, investment casting wax-stearic acid as a model material. The advantages of this material are: low melting point, simple composition, easy preparation process. But the outstanding weakness is poor thermal stability, usually about 30 ℃ that is deformed. In summer, especially in the south, the wax pattern softens and deforms more easily. Cause model ruler