摘要
针对陶瓷浆料在冷冻过程中冷却速率不同生成的孔径大小不同的问题,提出通过改变冷冻板的厚度和导温系数来改变浆料冷却速率,开展以下研究:利用COMSOL建立冷冻板和陶瓷浆料的瞬态传热仿真模型,确定合适的冷冻板厚度和导温系数。结果表明:增大冷冻板厚度或减小其导温系数均可增大陶瓷浆料的冷却速率。当冷冻板为不锈钢304且厚度为40 mm时,温度变化速率可达2℃/min;当厚度为60 mm时,温度变化速率可达1℃/min。
Aiming at the problem of different pore sizes generated by different cooling rates of ceramic slurry in the freezing process,it is proposed to change the cooling rate of the slurry by changing the thickness and thermal conductivity of the freezing plate.The following research is carried out:Use COMSOL to establish a freezing plate and ceramic slurry the transient heat transfer simulation model of the material to determine the appropriate freezing plate thickness and temperature conductivity.The results show that increasing the thickness of the freezing plate or reducing its thermal conductivity can increase the cooling rate of the ceramic slurry.When the freezing plate is stainless steel 304 and the thickness is 40 mm,the temperature change rate can reach 2℃/min,when the thickness is at 60 mm,the temperature change rate can reach 1℃/min.
作者
王日双
陈桦
张耿
张宝愿
茹岚
WANG Rishuang;CHEN Hua;ZHANG Geng;ZHANG Baoyuan;RU Lan(School of Mechanical and Electrical Engineering,Xi'an Technology University,Xi'an 710021,Shaanxi,China)
出处
《中国陶瓷工业》
CAS
2021年第1期1-4,共4页
China Ceramic Industry
基金
陕西省特种加工重点实验室(2017SXTZKFJG03)。
关键词
COMSOL仿真
冷冻板
厚度
导温系数
冷却速率
COMSOL simulation
freezing plate
thickness
thermal conductivity
cooling rate
