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在1.5t感应炉中用硅钙合金和稀土金属处理了含硫钢水,开发了一种新型环保易切削钢并进行了切削性能和力性测试,结果表明,钢材切削性能极佳,力学性能达到了国标中相应钢种的标准。借助于扫描电镜和能谱分析技术研究了钢中M n-RE-C a-S系复合夹杂物,切削过程中这种夹杂物在刀具前刀面上形成一层保护膜,减轻了刀具磨损,改善了切削过程。
In a 1.5t induction furnace, the sulfur-containing molten steel was treated with calcium-silicon alloy and rare earth metal, a new environmentally-friendly free-cutting steel was developed and the cutting performance and force test were carried out. The results show that the cutting performance of the steel is excellent and the mechanical properties reach The national standard steel in the corresponding standard. The M n-RE-C aS composite inclusions in steel were studied by means of SEM and EDS. During the cutting process, these inclusions formed a protective film on the rake face of the tool to reduce tool wear and improve The cutting process.