密烘铸铁是在高温铁水中均匀地加入硅钙、硅钡等孕育剂进行特殊的孕育处理而形成的一种高强度铸铁。孕育剂改变了铸铁的结晶凝固条件,从而获得了致密、均匀的组织和长度变短,均匀分布的石墨。密烘铸铁是1922年由美国人A.F.Meehan经过试验和小规模生产后获得专利的一种多用途铸铁,现已被四十多个国家采用,并已有专门的国际性组织──国际密烘金属股份公司(IMMC)。 Burnish cast iron is a kind of high-strength cast iron formed by special inoculation of silicon-calcium and silicon-barium inoculant in high-temperature molten iron. The inoculant changed the crystalline solidification conditions of the cast iron, resulting in a dense and uniform structure and a uniform and short distribution of graphite. Burnishing iron is a multi-purpose cast iron patented by the American AFMeehan in 1922 after its trial and small-scale production. It has been adopted by more than 40 countries and has a special international organization - Metal Corporation (IMMC).