【摘要】 316L不锈钢是一种制作人体植入物的重要材料。经过调研提出一种羟基磷灰石混粉电火花铣削加工方式，通过因素和水平的变化探究羟基磷灰石混粉电火花铣削加工与混粉电火花成形加工两种加工工艺蚀除316L不锈钢的趋势与不同。试验结果发现，混粉电火花铣削加工能够提高材料去除率，降低电极损耗率、表面粗糙度和表面接触角。证明了该加工方式具有研究意义，并通过单因素试验进一步探究该加工方式正负极性下所呈现的不同加工特性及形成原因。极性试验结果显示，正极性加工能够实现更高的材料去除率，负极性加工则呈现更低的电极损耗率、表面粗糙度和表面接触角。更多还原

【Abstract】 316L stainless steel is used as an important material for making human implants.After researching and proposing a machining method called Nano Hydroxyapatite Powder Mixed Electrical Discharge Machining milling(NHAP-PMEDM-milling) is proposed to explore the trends and differences between two machining processes, NHAP-PMEDM-milling and Nano Hydroxyapatite Powder Mixed Electrical Discharge Machining(NHAP-PMEDM),to etch 316L stainless steel through the variation of factors and levels. The experimental results found that NHAP-PMEDM-milling can improve the material removal rate and reduce the electrode loss, surface roughness and contact angle. It proves that this machining method has research significance, and further explores the different machining characteristics and formation reasons presented under the positive and negative polarity of this machining method through the one-way test. The results of the polarity experiment showed that the positive polarity machining could realize higher material removal rate, while the negative polarity machining presented lower electrode loss rate, surface roughness and contact angle.更多还原