As one kind of high strength and thermal resistant nickel-based alloys, Inconel 718 has been used extensively in aerospace industries. To satisfy the instant requirements of higher material removal rate and good surface integrity from engineering practice, high speed machining of Inconel 718 is an inevitable trend. The influences of cutting speed on surface integrity were investigated through the experimental study with high-speed milling Inconel 718 using Sialon ceramic tool. The results showed that higher cutting speed could exploit to give excellent surface integrity. The best surface integrity was obtained in the investigation at the highest cutting speed of 1 400 m/min in the applied cutting speed range.%随着机械加工对于更快的材料去除率和更好的表面完整性的需求,高速切削高强度镍基高温合金Inconel 718的应用是必然的发展趋势.通过赛阿龙(Sialon)陶瓷刀具高速铣削Inconel 718试验,研究切削速度对Inconel 718加工表面完整性的影响规律.结果表明,随着切削速度的提高加工表面完整性越来越好,在试验条件范围内,当切削速度达到1 400 m/min时,获得的表面完整性最好.
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