一种低成本奥氏体基高碳铸钢丸的试验研究

Experimental Study on High Carbon Cast Steel Shot with a Low-Cost Austenite Matrix

通过调整钢丸中C、Mn等合金元素含量和控制熔炼工艺制备了以奥氏体组织为基体的高碳铸钢丸,并利用OLYMPUS/GX-51金相显微镜、AXIOS(PW4400)型X荧光仪、碳硫分析仪、D/max2200型XRD衍射仪、S-3400N型扫描电子显微镜等检测仪器和锤击试验对比分析了两种钢丸组织和性能的优劣。试验结果表明:C为1.2%、Mn为6%时得到了以奥氏体组织为基体的高碳铸钢丸;奥氏体基高碳铸钢丸的冶金质量得到很大改善,性能也得到显著提升。

High-carbon cast steel shot with austenite matrix was prepared by adjusting alloying elements content such as C and Mn of shot and controlling smelting process, and then testing instruments such as OLYMPUS/GX-51 metallurgical microscope, AXIOS （PW4400） X-ray fluorescence instrument, D/max2200 XRD diffraction, carbon and sulfur analyzer, S-3400N scanning electron microscopes and hammering test were used to compare its microstructure and properties with other high carbon cast steel shot. The experimental results show that high carbon cast steel shot with austenite matrix was obtained at the alloying elements content of 1.2% C, 6% Mn; and its metallurgical quality and performance had been enhanced significantly.