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EXPERIMENTAL INVESTIGATION OF FACE MILLING ALUMINUM ALLOY EN AW-2011 T6 USING VARIOUS COOLING TECHNIQUES
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J
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D
DOI:10.22190/FUME230523021C.png)
Abstract
En 中文
The main goal of this paper is to determine the influence of cooling technique on surface roughness during up and down face milling of aluminum alloy ENAW-2011 T6. Along with dry machining, three cooling techniques were observed: cutting fluid (CF), minimum quantity lubricant (MQL) and cold compressed air (CCA). Thirteen experiments were conducted for each technique. Following the defined plan of the experiment, cutting speed and feed per tooth were varied. An optical profilometer was used to analyze arithmetic deviation of the profile (Ra) and arithmetic mean of the absolute height (Sa). Down milling produced up to 24 % lower Ra and Sa values in comparison to up milling. Increasing feed per tooth greatly increased surface roughness while increasing cutting speed led to a 12 % to 14 % decrease in surface roughness. Using the same cutting parameters, CCA produced the lowest, while CF produced the highest Ra and Sa values. Using the test results and regression analysis, mathematical models were generated allowing for precise Ra and Sa predictions. Optimization of the regression models was carried out with the goal of achieving the lowest surface roughness for each milling strategy and applied cooling technique.
Keywords:
Face milling
Minimum quantity lubricant
Cold compressed air
Dry machining
Surface roughness
Chip morphology
Journal
F
IF:
11.8
Papers:
301
Citations:
1.6K
