It is concluded that to reduce temperature from furnace, shorten timeinfurnace and control atmosphere in furnace are the key points.
得出结论：降低出炉温度、缩短在炉时间及控制了炉内气氛是关键。
2
The accurate control of the work pieces temperature in vacuum annealing furnace is a typical nonlinear large time delay and cross coupling complicated problem.
而在真空退火的生产过程中，退火工件温度的精确控制是一个典型的非线性、大时滞、强耦合的复杂控制问题。
3
Equipped with cycle device in the air or the oil heat treatment furnacein certain temperatures: thermal insulation for a period of time.