炉型 工件形状 [3s-S+n
@
圆柱 板 薄管 /e[m;+9^&
(d/D<1/4,l/D<20) 厚管 B@NBN&Fr
(d/D≥1/4) &P>& T
盐浴炉 K/min·mm-1 0.7 0.7 0.7 1.0 ZSW@,Ti
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d AIY 1sSK
KW/min (0.117~0.175)D (0.117~0.35)B (0.175~0.35)d (0.25~0.5)d ep?D;g
空气炉 K/min·mm-1 3.5 4 4 5 Y]KHCY
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d : r ~iFP*
KW/min (0.6~0.9)D (0.6~2)B (1~2)d (1.25~2.5)d jex\5
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