一針狀鑄铁的介紹 針狀鑄铁的組織,基體上是類似淬硬後的炭鋼組織而介於配火后麻顿赛體及本耐體中間的組織;不過谇硬後炭鋼的基體組織是百分之百的麻頓賽體或本耐體,而針狀鑄铁则在针狀的基體上仍有石墨存在,其石墨存在的数量、分佈情形、以及形體,胥視原铁水處理的步驟而决定。如属於高級鑄铁處 A needle-shaped cast iron needle acicular cast iron organization, the base is similar to the hardened carbon steel tissue and the match between the latter group Matt Dayton body and the body of the intermediate material; but after the hard carbon steel Matrix organization is one hundred percent of Dayton race body or the resistance of the body, while acicular cast iron in the needle-shaped substrate is still graphite, the presence of graphite, the number of distribution, as well as physique, Xu as the original hot metal processing steps And decided. If it belongs to the senior cast iron office