我们从1980年开始,对硼铸铁进行了试验研究,並在本厂的机床铸件上进行了试验性应用及批量投产。研究了低硼铸铁的含硼量与金相组织、机械性能的关系,摸索了硼铸铁的冷,热加工性能。试验及用户访问证明,硼铸铁是一种性能较好的耐磨铸铁。其处理工艺简单,成本低,资源广,且机械性能不亚于牌号HT 20—40,而优于高磷铸 Since 1980, we have carried out experimental research on boron cast iron and conducted trial application and mass production on our machine tool castings. The relationship between boron content and microstructure and mechanical properties of low boron cast iron was studied, and the cold and hot working properties of boron cast iron were explored. Tests and user visits prove that boron cast iron is a good performance of wear-resistant cast iron. The treatment process is simple, low cost, wide resources, and the mechanical properties of no less than the grade HT 20-40, which is better than high-phosphorus cast