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可锻铸铁是高强度铸铁的一种。近几十年来它在农业机械制造、汽车制造、水暖器材等方面得到了广泛应用。但由于可锻铸缺的退火周期较长,因而在生产大跃进的形势下就阻碍了增产任务的完成,因此,如何住不增添退火设备的条件下,缩短退火周划、完成增产任务就成为生产上极待解决的关键问题。缩短可锻铸缺退火周期的方法到目前为止有许多种,例如用低温时效处理,退火前进行淬火,在铸铁中加微量的铝铁、钛铁或硅铁等,但这些方法均不能保证汽车铸件产
Malleable cast iron is a type of high strength cast iron. In recent decades it has been widely used in agricultural machinery manufacturing, automobile manufacturing, plumbing equipment and so on. However, due to the relatively long annealing period of malleable castings, the completion of stimulation tasks will be hampered in the situation of the Great Leap Forward during production. Therefore, how to shorten the annealing schedule and increase production tasks without increasing the annealing facilities, The key issues to be solved in production. So far there are many ways to shorten the malleable cast-out annealing cycle, such as low-temperature aging treatment, quenching before annealing, adding trace amounts of ferro-aluminum, ferrotitanium or ferrosilicon in cast iron, etc. However, none of these methods can guarantee the car Casting production