材料发热性能研究

Study on Thermal Property of Materials

摘要: 针对极端天气频发，冬季突降大雪会对城市道路交通造成重大影响的问题，目前还没有理想的解决方法，如何将材料的发热性能应用到混凝土的实际工程中去，成为了当前需要解决的问题。本文通过对常见电磁感应材料如铁块、钢球、铝箔纸等进行材料发热性能试验，得到以下结论：铁粉、钢渣分子间存在较大空隙，不能产生电磁热效应，实心铁球与空心铁球与电磁发热板的接触面积较小，不能产生电磁热效应，其他条件相同下，铁片面积与发热速率成正比，发热速率与电磁功率成正比，铝箔纸发热的最小面积约为64 cm2，且长宽比必须达到3。

Abstract: For the problem of frequent extreme weather and sudden heavy snow in winter that will have a significant impact on urban road traffic, there is no ideal solution. How to apply the heat perfor-mance to the actual engineering of concrete has become a problem to be solved. This paper through the heating performance test of common electromagnetic induction materials such as iron block, steel ball, aluminum foil, etc. to study thermal property of materials and get the following conclusion: There is no large gap between iron powder and slag, the contact area of solid iron ball and hollow iron ball and electromagnetic heating plate is small, the area of iron sheet is proportional to the heating rate, heating ratio to the electromagnetic power, the minimum area of aluminum foil heating is about 64 cm2, and the length ratio must reach 3.