It can measure shell speed and crusting of film laminating by adopting fks - 1 tester of film laminating capacity ; the principle of this instrument is that it makes film laminate on heating plate and turns 90or 180 of heating plate for moving un - shell sand . and then it measures shell thickness and observes cocking condition of surface sand 采用fks - 1型覆膜砂结壳性能测试仪可以观测覆膜砂的结壳速度和起皮状况，其原理是将覆膜砂撒在加热板上，经过某一时间之后，将加热板旋转90或180移去未结壳的松散砂，然后测量结壳厚度，并观察表层砂的翘起情况。
