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Machining of austenitic stainless steels using CVD multi-layer coated cemented carbide tools

机译:使用CVD多层涂层硬质合金刀具加工奥氏体不锈钢

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This paper presents the results of experimental work in dry turning of austenitic stainless steels (AISI 304 and AISI 316) using CVD multilayer coated cemented carbide tools. The turning tests were conducted at four different cutting speeds (120, 150, 180 and 210 m/min) while feed rate and depth of cut were kept constant at 0.16 mm/rev and 1 mm, respectively. The cutting tools used were TiC/TiCN/TiN and TiCN/TiC/Al{sub}2O{sub}3 coated cementide carbides. The influences of cutting speed, cutting tool coating top layer and workpiece material were investigated on the machined surface roughness and the cutting forces. The worn parts of the cutting tools were also examined under scanning electron microscope (SEM). The results showed that cutting speed significantly affected the machined surface roughness values. With increasing cutting speed, the surface roughness values decreased until a minimum value is reached beyond which they increased.
机译:本文介绍了使用CVD多层涂层硬质合金工具对奥氏体不锈钢(AISI 304和AISI 316)进行干车削的实验结果。车削测试以四种不同的切削速度(120、150、180和210 m / min)进行,而进给速度和切削深度分别保持恒定在0.16 mm / rev和1 mm。所使用的切削工具为TiC / TiCN / TiN和TiCN / TiC / Al {sub} 2O {sub} 3涂层硬质合金。研究了切削速度,切削刀具涂层顶层和工件材料对加工表面粗糙度和切削力的影响。切削工具的磨损部分也在扫描电子显微镜(SEM)下进行了检查。结果表明,切削速度显着影响机加工表面粗糙度值。随着切削速度的提高,表面粗糙度值减小,直到达到最小值为止,然后增加到最小值。

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