The diameter of actual tangent circle is an important parameter for safety of boiler, the residual rotation is the key factor of flue gas temperature deviation at furnace exit.
实际切圆直径是锅炉稳定安全运行的一个重要参数，炉膛出口残余旋转是造成烟温偏差的主要原因。
2
General continuous annealing export should choose to die than actual need wire diameter 0.0015-0.0035 more appropriate.
一般连续退火出口模要选择比实际需要线径大0.0015—0.0035比较合适。
3
This article brings to Light the internal relations and difference between single pitch diameter and actual pitch diameter by means of geometrical analysis of several parameters of pitch diameter.