Hardness can do 61 — 65hrc maturation process is: annealing, softening after casting machining, machining of air cooling after quenching and low temperature stress tempering.
硬度能做到61——65hrc成熟工艺是：铸造后软化退火，便于加工，加工后空冷淬火加低温去应力回火。
The intermittent drying parameters, such as heated air temperature, limit time of heating, tempering temperature and tempering time, were studied.
研究了稻谷的间歇干燥工艺参数——干燥介质温度、极限受热时间、缓苏温度和缓苏时间。
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