Influence of edge hone radius on cutting forces, surface integrity, and surface oxidation in hard milling of AISI H13 steel
Influence of edge hone radius on cutting forces, surface integrity, and surface oxidation in hard milling of AISI H13 steel
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AISI H13 钢硬铣削中刃口珩磨半径对切削力、表面完整性和表面氧化的影响
DOI：
10.1007/s00170-017-1292-z
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发表时间：
2018-03-01
影响因子：
3.4
通讯作者：
Jiang, Dongdong
中科院分区：
文献类型：
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作者：
Li, Binxun;Zhang, Song;Jiang, Dongdong
刀具刃口预处理对刀具的磨损行为有显著的影响，从而对加工性能有显著的影响。在本研究中，硬铣削AISI H13钢（50 +/- 1HRC）与未涂覆的硬质合金刀具进行了实验，以确定切削力，表面完整性（表面粗糙度，硬度，微观结构的变化，和残余应力）和表面氧化的影响的边缘珩磨半径。通过光学轮廓仪、纳米测试仪、光学显微镜、SEM、XRD、X射线应力测量和EDS对实验结果进行了评价。首先，刃磨半径对切削力和表面完整性的影响是显著的。即切削力和进给力随刃磨半径的增大而增大，刃磨半径为30 μ m的刀具可获得较低的表面粗糙度。随着刃磨半径的增大，已加工表面的纳米硬度、塑性变形深度和残余压应力增大。第三，硬态铣削过程中，加工表面既没有出现白色层，也没有发生相变。最后，在地下没有观察到氧富集和碳浓度。研究结果对优化刃磨半径、获得理想的加工性能具有指导意义。
Tool edge preparation has a remarkable influence on tool wear behavior and therefore on the machining performance. In this present research, hard milling of AISI H13 steel (50 +/- 1HRC) with uncoated carbide tools was experimentally conducted to identify the effect of an edge hone radius on cutting force, surface integrity (surface roughness, hardness, microstructural changes, and residual stress), and surface oxidation. Experimental results are evaluated by means of an optical profilometer, Nano Tester, optical microscope, SEM, XRD, X-ray stress measurement, and EDS. First, the effect of edge hone radius on cutting forces and surface integrity is significant. That is the cutting and feed forces increase with the increase of edge hone radius, and the lower surface roughness is obtained when using a cutting tool with edge hone radius of 30 mu m. Secondly, the nano-hardness in the machined surface, depth of plastic deformation, and compressive residual stress increase with the increase of edge hone radius. Thirdly, neither a white layer nor phase transformation occurs in the machined surface during hard milling process. Finally, no oxygen enrichment and carbon concentration is observed in the subsurface. This research is benefitted to providing a guide to optimize the edge hone radius and acquires a desirable machining performance.