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Open AccessArticle
Wear Mechanism of an AlCrN-Coated Solid Carbide Endmill Cutter and Machined Surface Quality under Eco-Friendly Settings during Open Slot Milling of Tempered JIS SKD11 Steel
by
Ly Chanh Trung
Ly Chanh Trung 1,2,3,* and
Tran Thien Phuc
Tran Thien Phuc 2,3
1
Mechanical Engineering Laboratory, Faculty of Mechanical Engineering, Cao Thang Technical College (CTTC), 65 Huynh Thuc Khang, Ben Nghe Ward, District 1, Ho Chi Minh City 700000, Vietnam
2
Department of Machine Design, Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam
3
Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Vietnam
*
Author to whom correspondence should be addressed.
Coatings 2024, 14(8), 923; https://doi.org/10.3390/coatings14080923 (registering DOI)
Submission received: 22 June 2024
/
Revised: 12 July 2024
/
Accepted: 22 July 2024
/
Published: 23 July 2024
Abstract
In the die and mold industry, tempered JIS SKD11 steel is selected to manufacture cold-forming dies that require an optimum balance of toughness, strength, and wear resistance. Therefore, the machinability of tempered JIS SKD11 in the milling machining process is challenging. The use of eco-friendly machining settings is intended to diminish tool wear and enhance the quality of the machined surface as well as the accuracy of the machined components. Adapting to the aforementioned factors for cold-forming dies is a pivotal issue. In this study, the machinability of tempered JIS SKD11 steel was analyzed under dry, MQL, cryogenic cooling with liquid nitrogen (LN2), and liquid carbon dioxide (LCO2) machining settings during open slot milling operations with varying input parameters, including cutting speeds and cutting feeds. An in-depth evaluation of output responses, including tool wear, surface roughness, cutting temperature in the cutting zone, and microhardness of the machined surface, was also conducted. The findings unveiled that the flank wear of the cutters and surface roughness of the machined surfaces obtained minimum values of 0.22 mm and 0.197 µm, respectively, during open slot milling operations at a cutting speed of 100 m/min and a cutting feed of 204 mm/min under cryogenic cooling with liquid carbon dioxide (LCO2). The findings from this study suggest that employing cryogenic cooling with LCO2 could serve as a viable substitute for dry, MQL, and cryogenic cooling with LN2 methods to enhance the machinability of hardened JIS SKD11 steel.
Share and Cite
MDPI and ACS Style
Trung, L.C.; Phuc, T.T.
Wear Mechanism of an AlCrN-Coated Solid Carbide Endmill Cutter and Machined Surface Quality under Eco-Friendly Settings during Open Slot Milling of Tempered JIS SKD11 Steel. Coatings 2024, 14, 923.
https://doi.org/10.3390/coatings14080923
AMA Style
Trung LC, Phuc TT.
Wear Mechanism of an AlCrN-Coated Solid Carbide Endmill Cutter and Machined Surface Quality under Eco-Friendly Settings during Open Slot Milling of Tempered JIS SKD11 Steel. Coatings. 2024; 14(8):923.
https://doi.org/10.3390/coatings14080923
Chicago/Turabian Style
Trung, Ly Chanh, and Tran Thien Phuc.
2024. "Wear Mechanism of an AlCrN-Coated Solid Carbide Endmill Cutter and Machined Surface Quality under Eco-Friendly Settings during Open Slot Milling of Tempered JIS SKD11 Steel" Coatings 14, no. 8: 923.
https://doi.org/10.3390/coatings14080923
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