可锻铸铁连续冷却获得细珠光体的研究

STUDY ON MALLEABLE IRON FOR FINE PEARLITE WITH CONTROLLING COOLING RATE AFFERT HIGH TEMPERATURE ANNEALE

本文研究应用冷却速度介于空冷和油冷之间的ＡＱＬ２１０溶液，控制可锻铸铁高温石墨化退火后的冷却过程，以略低于临界冷速Ｖｃ的冷速，抑制粗片状珠光体和马氏体的形成，得到屈氏体、索氏体组织，该组织经高温回火后成为均一的索氏体，其机械性能优良．

This paper deals with the apptication that AQL210 water solution control the malleable iron cooling tromsformation after high temperature omneale,of which the cooling rate is betweem air and oil. It is indicated that the cooting rate which is tightly slower than critical cooting rate V. avoid coarse pearlite or martensite,in order to oblain sorbit and troostite,The mixture fine pearoite become alone sorbite with high temperature tempering,Which takes excellent mexhanical property.