微波硬化水玻璃砂型内温度场分布特性及影响因素初步研究  

nvestigation on Temperature Distribution Characteristic and Its Effect Factors of the Sodium Silicate Sand Mould Hardened by Microwave Heating

作　　者：于涛[1] 樊自田[1] 徐志军[2] 吴香清[1] 汪华方[1] 

机构地区：[1]华中科技大学材料成形及模具技术国家实验室,湖北武汉430074 [2]空军装备研究院导技所,北京100085

出　　处：《铸造》2011年第3期238-242,共5页Foundry

基　　金：国家自然科学基金赞助项目(51075163)

摘　　要：采用热电偶温度测量传感器,通过单点测量方式,研究了微波硬化水玻璃砂型内部温度场的分布规律,分析了微波加热时间、微波加热功率、水玻璃加入量以及炉内加热位置等工艺参数对砂型内部温度场分布规律的影响。结果表明:微波硬化水玻璃砂型内温度分布呈"内高外低"的正温度梯度分布;微波加热时间、微波加热功率及水玻璃加入量对砂型整体温度高低有影响,但不改变温度场分布规律;水玻璃模数及炉内加热位置对砂型整体温度及温度场分布规律都没有明显影响。Distribution of the temperature field inside the sodium silicate sand mould hardened by microwave heating has been measured through a single-point measurement method by thermocouple,and the impact of parameters consisting of microwave heating time,microwave power,adding volume of sodium silicate and heating location in the microwave furnace on distribution of the temperature field inside the sodium silicate sand mould has been analyzed in this paper.The results show that there is a positive temperature gradient from surface to center of the sodium silicate sand mould.The whole temperature of the sodium silicate sand mould is influenced by microwave heating time,microwave power and adding volume of sodium silicate.But the distribution rule of the temperature field is not significantly influenced by all of the parameters involved in the paper.

关 键 词：水玻璃砂 微波硬化 热电偶 温度场 工艺参数 

分 类 号：TG221[金属学及工艺—铸造]