the enthalpy-change coating consists of some matters as a base material causing endothermic reaction at a certain temperature range, which acts as iron chill when placed on a mold or core surface.
焓变涂料是以在一定的温度区间内可发生吸热化学反应的物质为基料配制的,将其涂在砂型(芯)表面,可代替常规冷铁。