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我厂马铁退火是用军火焰式的退火炉来进行的,此种退火炉的缺点是炉内各区热的傅布非常不均衡.因而如何采用最适当的退火规范,使炉内温度最低区的铸件得到合理的退火,同时使最高温度区的铸件不发生过火现象,这是一个极不容易解决的问题.根据苏联Н．Г．吉尔舒维奇编著的“铁铸件”一书内有关马铁第一期退火周期的图解计算法,简化出一种切合实际应用的方法,兹介绍于下:
My factory ferrite annealing is carried out by the military flame-type annealing furnace, the disadvantage of this annealing furnace is that the Fu Bo area is very uneven heat. Therefore, how to use the most appropriate annealing specifications, so that the lowest temperature furnace area Casting a reasonable annealing, while the highest temperature zone casting does not over-fire phenomenon, this is a very difficult problem to solve. According to the Soviet Union. Г. Giltsovich’s “Iron Castings,” a book on the calculation of the first phase of the horse iron annealing cycle diagram calculation method to simplify a practical application of the method, it is introduced in the following: