炉型 工件形状 r4iT
9D
圆柱 板 薄管 FY]Et=p
(d/D<1/4,l/D<20) 厚管 Rn{X+b.
(d/D≥1/4) MW=rX>tE
盐浴炉 K/min·mm-1 0.7 0.7 0.7 1.0 .e}`n)z
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d dQ#oY|a
KW/min (0.117~0.175)D (0.117~0.35)B (0.175~0.35)d (0.25~0.5)d q\~D:z$+CO
空气炉 K/min·mm-1 3.5 4 4 5 0.1?hb|p5T
W/mm (0.167~0.25)D (0.167~0.5)B (0.25~0.5)d (0.25~0.5)d (D\`:1g
KW/min (0.6~0.9)D (0.6~2)B (1~2)d (1.25~2.5)d <u
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