论文部分内容阅读
我厂自1962年应用热风送砂以来,烘干砂的过热问题一直没有很好解决。每逢夏季,尤为突出,烘干砂的温度往往达到100～120℃,虽经储存、运输、混碾,输送至造型位置,砂温仍在70～80℃,使水玻璃砂的保存性能、流动性能差,造型困难,给生产造成很大影响。为了降低烘干砂的温度,曾采取混水玻璃时加水、中间斗储存、冷风吸送等措施,未能见效。我厂和建厂工程局在铸钢车间组成由工人、干部、技术人员参加的三结合小组,经过调查研究,制订了改革方案,并在实践中不断
Since the application of hot blast sand in our factory in 1962, the overheating problem of drying sand has not been well solved. It is especially prominent in summer, the temperature of drying sand often reaches 100-120 ℃. Although it is stored, transported, mixed and transported to the modeling position, the sand temperature is still between 70 and 80 ℃, which makes the performance of sodium silicate sand preservation, Poor flow properties, modeling difficulties, to produce a great impact. In order to reduce the temperature of drying sand, water has been taken when mixing water glass, the middle bucket storage, cold air suction and other measures, failed to bear fruit. I plant and construction engineering bureau in the cast steel workshop composed of workers, cadres, technical personnel to participate in the three combination group, after investigation and study, formulate a reform program, and in practice constantly