Effect of chill mold cast by ceramic mold 用陶瓷型铸造金属型的效果
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。
The shrinkage void, porosity and surface sinking in Al pattern plate have been eliminated by means of pressurized solidification in connection with technological core and inner chill in heavy thickness in ceramic mold. 采用加压凝固工艺,并结合在模板厚大部位安放工艺芯和内冷铁,成功地消除了陶瓷型精铸铝模板的缩孔,缩松及表面缩凹等缺陷。
If the compacted treatment degree and chill capacity of chiller are not enough to obtain fine spheroidal graphite layer, the service life of glass mold is short. 如果蠕化处理程度和冷铁激冷能力无法形成球墨层者,使用效果较差。