Improvement of workpiece quality in face milling of aluminum alloys

Biermann, Dirk; Heilmann, Markus

doi:10.1016/j.jmatprotec.2010.07.010

Cited by 18 publications

(8 citation statements)

References 8 publications

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“…In another study, Dhokia et al (2012a) reported that spraying LN 2 over the machining surface in CNC milling of 6061-T6 aluminium surface roughness has been reduced by as much as 50% as opposed to conventional dry and wet conditions whilst chip re-deposition and BUE was eliminated. Biermann and Heilmann (2010) studied the effect of CO 2 snow cryogenic cooling on the surface roughness and burr size of aluminium 6068-T6 face-milled surface. They investigated two cryogenic cooling concepts namely (i) stationary cooling of the exit edges and (ii) cooling nozzles moving with feed rate.…”

Section: Aluminium Composites and Alloysmentioning

confidence: 99%

State-of-the-art cryogenic machining and processing

Shokrani

Dhokia

Muñoz‐Escalona³

et al. 2013

International Journal of Computer Integrated Manufacturing

178

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This paper is a state-of-the-art review of the use of cryogenic cooling using liquefied gases in machining. The review is classified into two major categories namely, cryogenic processing and cryogenic machining. In cryogenic processing also known as cryo-processing the cutting tool material is subjected to cryogenic temperatures as a part of its heat treatment process. The majority of the reported studies identify that cryo-processing can considerably increase cutting tool life especially for high speed steel tools. It also identified that in cryogenic machining a cryogen is used as a cooling substance during cutting operations. The cryogen can be used to freeze the workpiece material and/or cutting tool. The paper concludes that cryogenic cooling has demonstrated significant improvements in machinability by changing the material properties of the cutting tool and/or workpiece material at the cutting zone, altering the coefficient of friction and reducing the cutting temperature.

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Section: Aluminium Composites and Alloysmentioning

confidence: 99%

State-of-the-art cryogenic machining and processing

Shokrani

Dhokia

Muñoz‐Escalona³

et al. 2013

International Journal of Computer Integrated Manufacturing

178

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“…For milling operations, Nalbant and Yildiz [18] designed an external jet system to spray LN 2 into the tool-workpiece interface. Biermann and Heilmann [19] designed two delivery systems suitable for face milling aluminum alloys. Several studies focused on the effects of cryogenic cooling on cutting temperatures.…”

Section: Introductionmentioning

confidence: 99%

CFD and experimental analysis of the coolant flow in cryogenic milling

Tahmasebi

Albertelli

Lucchini

et al. 2019

International Journal of Machine Tools and Manufacture

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“…Biermann et al [5] conducted cryogenic milling of aluminium alloys using Carbon-dioxide snow and found that the surface quality was improved due to the suppression of burr formation. Pušavec et al [6] investigated the influence of cryogenic machining on the surface integrity of Inconel718.…”

Section: Introductionmentioning

confidence: 99%

Cryogenic Milling of Aluminium-lithium Alloys: Thermo-mechanical Modelling towards Fine-tuning of Part Surface Residual Stress

Zhang

Huang

et al. 2015

Procedia CIRP

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Cryogenic cooling is emerging nowadays as an effective method for high performance machining, improving the machining efficiency as well as the surface integrity of the machined parts. Aluminium-lithium (Al-Li) alloys will likely become the material of choice over composites as the fuselages of the aircraft due to its higher strength-to-weight ratio and excellent corrosion resistance. We study the influence of liquid nitrogen (LN2) cryogenic cooling in milling process on surface residual stress of the generated Al-Li alloy parts. The model of the intrinsic thermo-mechanical coupling characters during cryogenic milling process is developed, which determines the cutting temperatures and forces related to the process parameters. Models and experimental results indicate that the cutting forces change little, while cutting temperatures do much under the LN2 cryogenic cooling and conventional dry milling operations respectively. Then the residual stresses of part surfaces after milling under the two different conditions are measured. Measured results show that the residual compression forces(negative values) under the LN2 condition is much less than those under the dry milling operations. This states clearly that the cutting temperatures contribute much more than the cutting forces to the part surface residual stresses. .

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Improvement of workpiece quality in face milling of aluminum alloys

Cited by 18 publications

References 8 publications

State-of-the-art cryogenic machining and processing

State-of-the-art cryogenic machining and processing

CFD and experimental analysis of the coolant flow in cryogenic milling

Cryogenic Milling of Aluminium-lithium Alloys: Thermo-mechanical Modelling towards Fine-tuning of Part Surface Residual Stress

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