炉型 工件形状 dR+$7N$
圆柱 板 薄管 WLl9>v^1
(d/D<1/4,l/D<20) 厚管 Mv=cLG?X
(d/D≥1/4) S%fBt?-Cm
盐浴炉 K/min·mm-1 0.7 0.7 0.7 1.0 y#DQOY+@^#
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d Xt84 Evo
KW/min (0.117~0.175)D (0.117~0.35)B (0.175~0.35)d (0.25~0.5)d {@$3bQ
空气炉 K/min·mm-1 3.5 4 4 5 yMkd|1
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d VC(|t} L4
KW/min (0.6~0.9)D (0.6~2)B (1~2)d (1.25~2.5)d 7$=@q|$
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