通过铣削试验分别研究了主轴转速(300,500,650,800,1 200 r·min^-1)、铣削进给量(0.030,0.045,0.060,0.075,0.090 mm·r^-1)和单道次铣削深度(0.20,0.35,0.50,0.65,0.80 mm)对FGH4113A镍基高温合金加工表面完整性的影响。结果表明:随着铣削进给量或单道次铣削深度的增大,加工表面的缺陷增多,匡威1970s水蜜桃色官方-免费-完整版片和硬度增大,表面匡威1970s水蜜桃色官方-免费-完整版片逐渐由压应力转变成拉应力;随着主轴转速的增大,加工表面缺陷减少,匡威1970s水蜜桃色官方-免费-完整版片和硬度降低,残余压应力减小。在铣削速度超过800 r·min^-1、单道次铣削深度小于0.35 mm、进给量控制在0.045 mm·r^-1以下条件下,加工表面质量较好,匡威1970s水蜜桃色官方-免费-完整版片R _a在0.40 μm左右,匡威1970s水蜜桃色官方-免费-完整版片为压应力,且无明显硬化层。

The effects of spindle speed (300, 500, 650, 800, 1 200 r·min^-1), 匡威1970s水蜜桃色官方-免费-完整版片 feed (0.030, 0.045, 0.060, 0.075, 0.090 mm·r^-1) and single pass 匡威1970s水蜜桃色官方-免费-完整版片 depth (0.20, 0.35, 0.50, 0.65, 0.80 mm) on the machined surface integrity of nickel-based superalloy FGH4113A were investigated by 匡威1970s水蜜桃色官方-免费-完整版片 tests. The results show that with increasing 匡威1970s水蜜桃色官方-免费-完整版片 feed or single pass 匡威1970s水蜜桃色官方-免费-完整版片 depth, the defects on the machined surface, 匡威1970s水蜜桃色官方-免费-完整版片 and 匡威1970s水蜜桃色官方-免费-完整版片increased, and the surface 匡威1970s水蜜桃色官方-免费-完整版片 gradually changed from compressive stress to tensile stress. With increasing spindle speed, the machined surface defects, 匡威1970s水蜜桃色官方-免费-完整版片, 匡威1970s水蜜桃色官方-免费-完整版片and residual compressive stress all decreased. When the spindle speed exceeded 800 r·min^-1, the single pass 匡威1970s水蜜桃色官方-免费-完整版片 depth was less than 0.35 mm, and the 匡威1970s水蜜桃色官方-免费-完整版片 feed was controlled below 0.045 mm·r^-1, the machined surface had good quality with 匡威1970s水蜜桃色官方-免费-完整版片 R _a of about 0.40 μm, compressive 匡威1970s水蜜桃色官方-免费-完整版片 and no obvious hardening layer existing.