炉型 工件形状 5%(xZ
6
圆柱 板 薄管 2/FH9T;e".
(d/D<1/4,l/D<20) 厚管 3`Q>s;DjIU
(d/D≥1/4)
5v-o2
盐浴炉 K/min·mm-1 0.7 0.7 0.7 1.0 Q##L|*Qy
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d D
z5(v1I9A
KW/min (0.117~0.175)D (0.117~0.35)B (0.175~0.35)d (0.25~0.5)d z`rW2UO#a`
空气炉 K/min·mm-1 3.5 4 4 5 gT4H?
#UB
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d
`_H^k!^
KW/min (0.6~0.9)D (0.6~2)B (1~2)d (1.25~2.5)d .FAuM~_99b
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