Wear mechanisms of PcBN cutting tools when dry turning ASTM Grade 2 austempered ductile iron under finishing conditions

The study deals with the machinability properties of austempered ductile iron using cubic boron nitride cutting tools. To emphasize the role of the austempering process, ductile iron specimens were first austenitized in salt bath at 900°C for 60min, after which they were quenched in a salt bath at 250°C and 325°C for 60min. Machining tests were carried out at various cutting speeds under the constant depth of cut and the feed rate. Tool performance was evaluated based on the workpiece surface roughness and flank wear. The influence of the austempering temperature and cutting speed on the chip form was also studied. The results point out that the lower austempering temperature results in the increase in the cutting forces, while better surface roughness is attained.

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The performance of ceramic and cermet cutting tools for the machining of austempered ductile iron

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-008-1528-z ◽

2008 ◽

Vol 41 (7-8) ◽

pp. 642-650 ◽

Cited By ~ 24

Author(s):

Kubilay Aslantas ◽

Irfan Ucun

Keyword(s):

Ductile Iron ◽

Cutting Tools ◽

Austempered Ductile Iron

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Cutting performance and wear mechanisms of Sialon ceramic cutting tools at high speed dry turning of gray cast iron

International Journal of Refractory Metals and Hard Materials ◽

10.1016/j.ijrmhm.2015.08.007 ◽

2016 ◽

Vol 54 ◽

pp. 330-334 ◽

Cited By ~ 8

Author(s):

Guizhao Tu ◽

Shanghua Wu ◽

Jia Liu ◽

Ying Long ◽

Bo Wang

Keyword(s):

Cast Iron ◽

Wear Mechanisms ◽

High Speed ◽

Gray Cast Iron ◽

Cutting Tools ◽

Cutting Performance ◽

Gray Cast ◽

Dry Turning ◽

Sialon Ceramic

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Research on Wear Behavior of Tools while Infeed Cutting Austempered Ductile Iron (ADI) with Ceramic Tools

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.10-12.605 ◽

2007 ◽

Vol 10-12 ◽

pp. 605-609

Author(s):

Xu Hong Guo ◽

G. Liu ◽

G.S. Su

Keyword(s):

Abrasive Wear ◽

Ductile Iron ◽

Cutting Tool ◽

Wear Behavior ◽

Cutting Tools ◽

Cutting Speed ◽

Austempered Ductile Iron ◽

Rake Face ◽

Wear Area ◽

Tools Wear

Cutting tests had been done on the Austempered Ductile Iron (ADI) with ceramic cutting tools. The wear shape of the cutting tool’s surface was observed by the Scanning Electron Microscope (SEM). The micro-wear area of the tools was analyzed with energy spectrum. Study on wear shape and wear mechanisms were done when infeed cutting ADI. The result shows that: the cutting speed is an important factor to the tool wear when infeed cutting ADI with CC650 tool, and with the increase of the cutting speed, the wear value of cutting tool increases obviously. The flank of cutting tool (CC650) has wear land of definite width during cutting, and shows obvious abrasive wear. The crate wear shape of rake face is almost joined to major cutting edge, it is different from the typical crate shape of rake face. Elements Fe, Si and Mg in ADI material diffuses to the surface of cutting tools (CC650) after cutting, the diffusion exacerbates the wear of cutting tools, and the diffusion degree of rake face is larger than that of flank, abrasive wear, adhesive wear and diffusive wear is chief reasons for tools wear.

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