Machined surface roughness and chip morphology in high speed side milling of inconel 718

Abstract High speed cutting (HSC) technology has the characteristics of high material removal rates and high machining precision. In order to study the relationships between chip morphology and machining surface characteristic in high speed cutting of superalloy Inconel718. High-speed orthogonal cutting experiment are carried out by used a high speed cutting device based on split Hopkinson pressure bar (SHPB). The specimen surfaces and collected chips were then detected with optical microscope, scanning electron microscope and three-dimensional surface profile measuring instrument. The results show that within the experimental parameters (cutting speed from 8–16m/s, depth of cut 0.1–0.5mm), the obtained chips are sawtooth chips and periodic micro-ripple appear on the machined surface. With the cutting speed increases, machining surface roughness is decreases from 1.4 to 0.99μm, and the amplitude of periodic ripples also decreases. With the cutting depth increases, the machining surface roughness increases from 0.96 to 5.12μm and surface topography becomes worse. With the increase of cutting speed and depth of cut, the chips are transform from continues sawtooth to sawtooth fragment. By comparing the frequency of surface ripples and sawtooth chips, it is found that they are highly consistent.

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EFFECTS OF MILLING METHODS AND COOLING STRATEGIES ON TOOL WEAR, CHIP MORPHOLOGY AND SURFACE ROUGHNESS IN HIGH SPEED END-MILLING OF INCONEL-718

International Journal of Machining and Machinability of Materials ◽

10.1504/ijmmm.2019.10017480 ◽

2019 ◽

Vol 21 (1/2) ◽

pp. 1

Author(s):

Paras Mohan Jasra ◽

Anthony Chukwujekwu Okafor

Keyword(s):

Surface Roughness ◽

Tool Wear ◽

Inconel 718 ◽

High Speed ◽

End Milling ◽

Chip Morphology ◽

Cooling Strategies

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Roughness of Metal Surface After Finishing Using Ceramic Brush Tools

Advances in Materials Science ◽

10.1515/adms-2017-0024 ◽

2018 ◽

Vol 18 (1) ◽

pp. 20-27 ◽

Cited By ~ 7

Author(s):

T. Salacinski ◽

T. Chmielewski ◽

M. Winiarski ◽

R. Cacko ◽

R. Świercz

Keyword(s):

Surface Roughness ◽

Inconel 718 ◽

Construction Materials ◽

Industrial Applications ◽

Machining Parameters ◽

Machined Surface ◽

Ceramic Tools ◽

Metal Parts ◽

Internal Surfaces ◽

Machined Surface Roughness

AbstractThe paper describes processes of metal parts edges deburring and surface of metal samples polishing with ceramic tools based on fibre aluminium oxide. It presents the construction of basic types of tools and their practical industrial applications, and evaluates the influence of machining parameters on surface roughness. An important advantage of the used tools is the possibility of deburring and machining of external flat and shaped surfaces as well as internal surfaces and even deep drilled holes. These tools can be practically used for machining all construction materials. The results of machining of selected engineering materials, such as aluminium 5052 and 2017A, Inconel 718, non-alloy steel, in various variants of machining parameters are presented. The influence of machining parameters on machined surface roughness was described.

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Research on Machined Surface Quality for High Speed Turning Titanium Alloy Membrane Discs and Optimization of Cutting Parameters

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.33.246 ◽

2010 ◽

Vol 33 ◽

pp. 246-250

Author(s):

Wei Zhang ◽

Min Li Zheng ◽

Ming Ming Cheng ◽

Wen Yong Shi

Keyword(s):

Surface Roughness ◽

Titanium Alloy ◽

Empirical Model ◽

High Speed ◽

Cutting Parameters ◽

Machined Surface ◽

Cutting Parameter ◽

High Speed Turning ◽

Machined Surface Roughness ◽

Cutting Parameter Optimization

By high speed turning experiment of aerospace engine titanium alloy membrane discs, it researches cutting parameters influence on machined surface roughness of titanium alloy membrane discs, meanwhile measures and analyzes machined surface topography. Machined surface roughness multi-linear regression empirical model of high speed end-surface turning titanium alloy membrane discs is established. Using cutting parameter combination obtained from cutting parameter optimization makes process verification experiment of high speed turning titanium alloy membrane discs. The results show that the established machined surface roughness empirical model of high speed turning titanium alloy membrane discs is credible in statistics, and the process verifying experiment effect is good by using optimized cutting parameters.

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Experiment Research of Cutter Edge and Cutting Parameters Influence on Machined Surface Roughness for High Speed Milling Hardened Steel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.136.86 ◽

2010 ◽

Vol 136 ◽

pp. 86-90 ◽

Cited By ~ 1

Author(s):

Wei Zhang ◽

Min Li Zheng ◽

Ming Ming Cheng ◽

Quan Wan

Keyword(s):

Surface Roughness ◽

High Speed ◽

End Milling ◽

Cutting Parameters ◽

Hardened Steel ◽

Machined Surface ◽

High Speed Milling ◽

Ball End Milling ◽

Edge Radius ◽

Machined Surface Roughness

By using experiment cutter edge topography obtained by super depth three-dimension microscope, fits the cutter edge curve and calculate experiment cutter edge radius value; by high speed milling hardened steel experiment, individually researches cutter edge and cutting parameters influence on machined surface in high speed milling hardened steel with end-milling cutter and ball-end milling cutter. The experiment analysis results show that under the same cutting parameters condition, machined surface roughness in high speed end-milling cutter milling is better than in high speed ball-end milling; within experiment selected cutting parameter range, cutter edge radius is the main influence factor on machined surface roughness in high speed end- milling hardened steel, while the influence on machined surface roughness in high speed ball-end milling hardened steel is not obvious. In end-milling, when edge radius and milling depth are in the same order magnitude or the difference is not obvious, milling depth should be a little bigger than selected cutter edge radius value.

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Experiment Research of Cutter Edge and Cutting Parameters Influence on Machined Surface Roughness for High Speed Milling Hardened Steel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.670.70 ◽

2013 ◽

Vol 670 ◽

pp. 70-75 ◽

Cited By ~ 1

Author(s):

Wei Zhang ◽

M.L. Zheng ◽

M.M. Cheng ◽

W.T. Wang

Keyword(s):

Surface Roughness ◽

High Speed ◽

End Milling ◽

Cutting Parameters ◽

Hardened Steel ◽

Machined Surface ◽

High Speed Milling ◽

Ball End Milling ◽

Edge Radius ◽

Machined Surface Roughness

By using experiment cutter edge topography obtained by super depth three-dimension microscope, fits the cutter edge curve and calculate experiment cutter edge radius value; by high speed milling hardened steel experiment, individually researches cutter edge and cutting parameters influence on machined surface in high speed milling hardened steel with end-milling cutter and ball-end milling cutter. The experiment analysis results show that under the same cutting parameters condition, machined surface roughness in high speed end-milling cutter milling is better than in high speed ball-end milling; within experiment selected cutting parameter range, cutter edge radius is the main influence factor on machined surface roughness in high speed end- milling hardened steel, while the influence on machined surface roughness in high speed ball-end milling hardened steel is not obvious. In end-milling, when edge radius and milling depth are in the same order magnitude or the difference is not obvious, milling depth should be a little bigger than selected cutter edge radius value.

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Influence of Gap Phenomenon on Various Kinds of Powder-Suspended EDM

International Journal of Automation Technology ◽

10.20965/ijat.2013.p0419 ◽

2013 ◽

Vol 7 (4) ◽

pp. 419-425

Author(s):

Hideki Takezawa ◽

◽

Tadashi Asano ◽

Naotake Mohri ◽

◽

...

Keyword(s):

Surface Roughness ◽

Electrical Discharge ◽

High Speed ◽

Electrical Discharge Machining ◽

High Speed Camera ◽

Machined Surface ◽

Machined Surface Roughness ◽

Observation Results

Powder-suspended Electrical Discharge Machining (EDM) produces a mirror-like finish due to the electrical discharge dispersed using powder-suspended fluid. Machined surface roughness differed, however, when several powders are mixed, so the influence of the gap phenomenon was not apparent. To vary the gap phenomenon in powder-suspended EDM, the gap region is observed using a high-speed camera. This report describes observation results in powdersuspended EDM.

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