炉型 工件形状 8Qtd,
圆柱 板 薄管 4$D:<8B
(d/D<1/4,l/D<20) 厚管 h^#K4/
(d/D≥1/4) #Pi}2RBRu
盐浴炉 K/min·mm-1 0.7 0.7 0.7 1.0 aKdi
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d umV5Y`
KW/min (0.117~0.175)D (0.117~0.35)B (0.175~0.35)d (0.25~0.5)d };%l <Ui;
空气炉 K/min·mm-1 3.5 4 4 5 o<T_Pjp
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d ?0HPd5=<v
KW/min (0.6~0.9)D (0.6~2)B (1~2)d (1.25~2.5)d v^_OX$=,
备 注 l/D值大取上限,否则取下限 H,l/B值大取上限,否则取下限 l/d值大取上限,否则取下限 l/d值大取上限,否则取下限