炉型 工件形状 &K^h'>t'
圆柱 板 薄管 l{Hi5x' H
(d/D<1/4,l/D<20) 厚管 ,oP-:q!PC
(d/D≥1/4) )}c $ n
盐浴炉 K/min·mm-1 0.7 0.7 0.7 1.0 0{PK]qp7
W/mm (0.167～0.25)D (0.167～0.5)B (0.25～0.5)d (0.25～0.5)d ,h]N*Z-I"
KW/min (0.117～0.175)D (0.117～0.35)B (0.175～0.35)d (0.25～0.5)d RkLH}`#
空气炉 K/min·mm-1 3.5 4 4 5 Ok6Y&#'P
W/mm (0.167～0.25)D (0.167～0.5)B (0.25～0.5)d (0.25～0.5)d 2.&v{gq
KW/min (0.6～0.9)D (0.6～2)B (1～2)d (1.25～2.5)d %1HW
) 7
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
