The accuracy control method of the W-series delay composition is expounded in this paper, and the particle size can be controlled by measuring the specific surface area of W-powder. Experiments proves that it can remarkable increase the delay accuracy of delay composition, when W-powder of the specific surface area in 4500 -4800 cm /g is chosen and the high speed mixing machine of JYYT-1 type is applied.%文章阐述了W系延期药的精度控制方法,通过对W粉的比表面积的检测,达到控制W粉的粒度的目的.试验证明选用比表面积4500～4800cm2/g的W粉,采用JYYT-1型高速混药机,能够显著提高延期药的延时精度.
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