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本文就碳工具钢(T_(10))在球化退火过程中,加热温度、保温时间、冷却速度、等温湿度、等温时间五个因素对缩短球化退火时间的影响进行了试验研究,并提出了缩短球化退火时间的初步看法.在加热温度取750～770℃时,保温时间可缩短到0.5～1.5小时;从加热温度到等温湿度的冷却速度不谨影响碳化物颗粒的弥散度,而且还影响碳化物的形态;在680℃等温促使碳化物球化需要时间很长,显然是不经济的,适当控制加热温度、保温时间和冷却速度,从而直接获得粒状碳化物组织,则等温时间可以大大缩短.
The effects of heating time, holding time, cooling rate, isothermal temperature and humidity, and isothermal time on the shortening of spheroidizing annealing time were studied in this paper. The experimental results of T_ (10) To shorten the initial view of the ball annealing time in the heating temperature to take 750 ~ 770 ℃, holding time can be shortened to 0.5 to 1.5 hours; from the heating temperature to the cooling rate of isothermal humidity does not affect the dispersion of carbide particles, and But also affect the carbide morphology; isothermal at 680 ℃ to promote carbide ball takes a long time, obviously uneconomical, proper control of the heating temperature, holding time and cooling rate, so as to obtain granular carbide structure, the isothermal time can be Greatly shortened.