一种低温热导板栅浇铸模具

A casting mould of low temperature thermal conductance grid

在动模与定模内,分别设计更加密集的横向与纵向分布的铜管传热腔,并且使用石墨烯铅炭合金材料制造一种低温热导板栅浇铸模具。将这种低温热导板栅浇铸模具与普通板栅浇铸模具浇铸所得板栅样品进行外观和力学性能比较,观察对比两种板栅样品在腐蚀前后的金相结构、微观形貌。由结果可知,低温热导板栅浇铸模具能够更好地控制浇铸过程中的热传导,降低浇铸工序能耗,提升产品成型率。工序中低温热导板栅浇铸模具平均温差在5℃以内,所以铅液受热均匀。浇铸的板栅金相晶粒细小均一,有利于形成均匀的腐蚀层。

In moving mode and fixed mode,more dense transverse and longitudinal distribution of copper tube heat transfer cavities are designed respectively.A low temperature thermal conductance grid casting mold was fabricated by using graphene lead carbon alloy.The appearance and mechanical properties of the grid samples cast by the low temperature thermal conductance mold were compared with those with the ordinary grid casting mold,and the metallographic structure and microstructure of the two grid samples before and after the corrosion were observed and compared.It can be seen from the results that the low-temperature thermal conductance casting mold can better control the heat conduction,reduce the energy consumption in the casting process,and improve the forming rate of the product.In the process,the average temperature difference in the casting mold of low-temperature thermal conductance grid is within 5℃,so the lead solution is heated evenly.The grain size of the cast grid is fine and uniform,which is conducive to the formation of uniform corrosion layer.