炉型 工件形状 $`E?=L`$
圆柱 板 薄管 ?K>)bA&l'
(d/D<1/4,l/D<20) 厚管 , ~O>8VbF
(d/D≥1/4) ;7QXs39S
盐浴炉 K/min·mm-1 0.7 0.7 0.7 1.0 ZH_$Q$9
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d ,,gMUpL7_8
KW/min (0.117~0.175)D (0.117~0.35)B (0.175~0.35)d (0.25~0.5)d
X8$Mzeq
空气炉 K/min·mm-1 3.5 4 4 5 t]$n~!
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d ahg:mlaob
KW/min (0.6~0.9)D (0.6~2)B (1~2)d (1.25~2.5)d Fo.Y6/}
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