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本文研究了炉前加铝孕育处理对中铬铸铁组织与机械性能影响的规律。结果表明,在中铬铸铁中加入适量铝进行炉前孕育处理,显著提高其凝固速度,导致共晶碳化物细化,较大幅度地提高其机械性能。
In this paper, the rules of influence of pre-furnace aluminum treatment on the microstructure and mechanical properties of medium-chromium cast iron were studied. The results show that adding appropriate amount of aluminum into the medium chromium cast iron for precooking treatment significantly increases the solidification rate, leads to the refinement of the eutectic carbide and greatly improves its mechanical properties.