一、前言近年来,可鍛鑄鉄生产技术的进步,偏重于取得粒状珠光体基体的方面,而黑心可鍛铸鉄的进步較少。但国內生产的可鍛鑄鉄多数是黑心的,并且用冲天炉作为熔化投备。针对这个情况,上海市可锻端跌行业趁蛛韵了各厂工人和技术人具进行集体研究,拭用高硫成分的焦炭和跌料,制造优质黑心的可锻筹铁。一城 I. Introduction In recent years, the progress of malleable casting 鉄 production technology, emphasis on access to granular pearlite matrix, and black heart malleable 鉄 less progress. However, most of the domestically produced malleable castings are black-hearted and used as cupola melting bases. In response to this situation, Shanghai can forgone the industry to take advantage of avalanche of the plant workers and technical personnel to conduct a collective study, wipe high-sulfur components of coke and down, to create high-quality black heart forged iron. One city