The result shows that inspecting cabtyre sheathing by ultrasonic is feasible, and the immersion method would be the most reasonable one.

提出了浸法及聚焦探头是比合理的探伤方法，同时波应于硬质橡胶材料的质量检测提供了一定的依据。

A sheathed heater is used for the drying heater,Also the heater box had a structure to which rectification is added so that it has better temperatures and hot airset temperature is smaller.

整流式加热器提高热风温度控制效果，使树脂干燥温度与热风设定温度基本一致。