An investigation of chip formation in turning of titanium for cermet inserts coated with AlCrSiTiN and TiAlSiN

• Autorzy: Janmanee P. , Thanadngarn C. , Jamkamon K. , Saodaen R. , Kumnorkaew T. , Nutnang C.

Identyfikatory

DOI

10.5604/01.3001.0054.6986

• Języki publikacji: EN

Abstrakty

EN

Purpose: In modern industry, titanium is recognised for its remarkable wear resistance and strength. However, its poor thermal conductivity poses a problem because it shortens the life cycle of cutting tools. Researchers have focused on enhancing the service life of cutting-edge tools, cutting production costs by using new coating materials, and identifying appropriate materials for these coatings. Design/methodology/approach: The experimental design involved tests with controlled cutting speeds of 150, 175, 200, and 225 m/min, feed rates of 0.2, 0.25, and 0.30 mm/rev, and cutting depths of 0.5, 1.0, and 1.2 mm. Titanium with a diameter of 25 mm and a length of 200 mm was prepared for the turning test over a machining distance of 20 mm. The chips obtained from the cutting test were observed and analysed using a scanning electron microscope to investigate the effect of the tool coating on the characteristics of the chip formation mechanism. Findings: The study revealed that inserts coated with AlCrSiTiN produced the characteristic of long twisted chips transitioning into continuous chips with shorter twisting distances than uncoated cermet inserts. The uncoated cermet inserts resulted in a greater twisting distance based on an examination of the chips with a scanning electron microscope, revealing more pronounced jaggedness in the fragments produced by the cermet turning inserts, which also possessed a larger average clearance than the inserts coated with AlCrSiTiN and TiAlSiN. Furthermore, the uncoated cermet inserts showed less wear at lower cutting speeds than the other types of inserts. Conversely, the TiAlSiN-coated inserts exhibited less wear at higher cutting speeds than the inserts of different materials. Research limitations/implications: The triangularly shaped inserts were cermet inserts coated with AlCrSiTiN or TiAlSiN via the PVD method and were used for dry turning. Practical implications: Wear of cutting-edge tools is a problem in turning of titanium. Therefore, it is crucial to identify methods to minimise wear and extend the service life considering the investment worthiness. Likewise, efforts are being made to develop new coatings tailored to the materials. Originality/value: The research could provide guidelines for reducing the wear generated in cutting tools and increasing the service life of cutting edges by adjusting the machining parameters.

Słowa kluczowe

EN

titanium; cermet insert; turning process; chip formation; cutting edge; sawtooth

PL

tytan; wkładka cermetalowa; proces toczenia; formowanie wióra; krawędź skrawająca; ząb piły

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2024
• Tom: Vol. 127, nr 1
• Strony: 32--41
• Opis fizyczny: Bibliogr. 42 poz.

Twórcy

autor

Janmanee P.

• Department of Mechanical and Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep (RMUTK), 2 Nanglin Chi Road, Sathorn, Bangkok 10120, Thailand

autor

Thanadngarn C.

• Department of Mechanical and Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep (RMUTK), 2 Nanglin Chi Road, Sathorn, Bangkok 10120, Thailand

autor

Jamkamon K.

• Department of Mechanical and Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep (RMUTK), 2 Nanglin Chi Road, Sathorn, Bangkok 10120, Thailand

autor

Saodaen R.

• Department of Mechanical and Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep (RMUTK), 2 Nanglin Chi Road, Sathorn, Bangkok 10120, Thailand

autor

Kumnorkaew T.

• Department of Mechanical and Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep (RMUTK), 2 Nanglin Chi Road, Sathorn, Bangkok 10120, Thailand

autor

Nutnang C.

• Department of Mechanical and Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep (RMUTK), 2 Nanglin Chi Road, Sathorn, Bangkok 10120, Thailand

• https://orcid.org/0009-0000-4639-6416

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