炉型 工件形状 wAu[pWD'6;
圆柱 板 薄管 6/[Z178m
(d/D<1/4,l/D<20) 厚管 'z-;* !A}j
(d/D≥1/4) Cv> yAt.3
盐浴炉 K/min·mm-1 0.7 0.7 0.7 1.0 9'n))%CZ.
W/mm (0.167～0.25)D (0.167～0.5)B (0.25～0.5)d (0.25～0.5)d S~k 0@
KW/min (0.117～0.175)D (0.117～0.35)B (0.175～0.35)d (0.25～0.5)d r}oURy,5
空气炉 K/min·mm-1 3.5 4 4 5 -OrY{^F
W/mm (0.167～0.25)D (0.167～0.5)B (0.25～0.5)d (0.25～0.5)d &N"'7bK6n
KW/min (0.6～0.9)D (0.6～2)B (1～2)d (1.25～2.5)d QOT) x4 !)
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
