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内蒙千里山生铁含有微量元素 Ti,当其达到某一含量时,对球铁凝固时共晶石墨的球化产生影响,本文通过试验指出,在制造球墨可锻铸铁白口生坯时,Ti 的影响是可以避免的,因为石墨化发生于退火时的固体状态。文中还进行了在小型冲天炉及以千里山生铁作主要炉料的条件下制造球墨可锻铸铁的一整套工艺试验,结果表明,所得铸件的机械性能符合制造汽车配件的要求,其机械性能如下:σ_b>40kg/mm~2 δ>10%
Inner Mongolia Trilithium pig iron contains trace elements Ti, when it reaches a certain content, the ductile iron ball solidified eutectic impact, this paper shows that in the manufacture of ductile malleable white iron white mouth, the impact of Ti is It can be avoided because graphitization occurs in the solid state upon annealing. The paper also conducted a small cupola and thousands of miles to make the main charge of thousands of miles of pig iron as the main charge of ductile malleable iron a set of process test results show that the resulting castings meet the mechanical properties meet the requirements of the manufacture of automotive parts, the mechanical properties are as follows: σ_b> 40kg / mm ~ 2 δ> 10%