炉型 工件形状 gt\kTn."
圆柱 板 薄管 e-#Vs{?|r
(d/D<1/4,l/D<20) 厚管 y-{?0mLq
(d/D≥1/4) ZS[Ut
盐浴炉 K/min·mm-1 0.7 0.7 0.7 1.0 <6+T&Ov6
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d }
L_Zmi$
KW/min (0.117~0.175)D (0.117~0.35)B (0.175~0.35)d (0.25~0.5)d nd&i9 l
空气炉 K/min·mm-1 3.5 4 4 5 Yr[&*>S
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d yW&ka3j\
KW/min (0.6~0.9)D (0.6~2)B (1~2)d (1.25~2.5)d #7@p
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