The effects of the coating stripping process on regenerated tool cutting edges

• Autorzy: Toboła D. , Czechowski K. , Wrońska I. , Łętocha A. , Miller T.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The cutting tools of high speed steel or cemented carbide need to be regenerated in many cases. This involves stripping the remnants of the initial coatings. The effects of chemical removal of the PVD TiN, TiAlN, TiN/(TiAlSi)N/TiN and TiZrN/10x(TiN/ZrN)/TiN coatings on some elements of geometry of cutting edges and the adhesion of subsequent coatings deposited on the cutting inserts are considered. Design/methodology/approach: Scanning electron microscopy is used to examine the structures after the various stages of inserts regeneration: with the initial coating, after it is chemically stripped and subsequently deposited. Geometry of cutting edges, i.e. roughness, edge roundness radius and 2D and 3D geometric structure of rake and flank faces, as well as the adhesion of subsequent coatings deposited on the inserts in the regeneration process are determined. Findings: The chemical coating stripping process did not cause unfavourable changes in the roughness parameter Ra of the rake and flank faces of cutting inserts, or in the roughness of their cutting edges. Subsequent coatings deposited on the decoated inserts had a marginally lower adhesion, but in the case of TiN coated cemented carbide, the latter coating had better adhesion than the original. Surface analyses showed that the PVD coating stripping methods were effective for TiN and TiAlN coated high speed steel HS6-5-2 inserts, as well as for TiN coated and commercially TiN/(TiAlSi)N/TiN coated cemented carbide inserts. Research limitations/implications: The paper is concerned with geometry of cutting edge and adhesive properties of subsequent coatings. To verify fully the effectiveness of the methods described further research on different coating removal from tools made of various tool materials should be carried out. Practical implications: The methods and chemicals used for removal of the initial PVD TiN, TiAlN and TiN/(TiAlSiN)/TiN coatings from high speed steel and cemented carbide inserts proved effective and may be used in the regeneration process of cutting tools. Originality/value: The effects of chemical removal of mono and multilayer PVD coatings from cemented carbide and high speed steel inserts on the regenerated cutting edges quality have been determined.

Słowa kluczowe

EN

PVD; coatings; stripping; roughness; cutting edge; coating adhesion

PL

PVD; powłoki; chropowatość; krawędź skrawająca; adhezja powłok

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2013
• Tom: Vol. 61, nr 2
• Strony: 294--301
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Toboła D.

• Institute of Advanced Manufacturing Technology, ul. Wrocławska 37a, 30-011 Kraków, Poland

autor

Czechowski K.

• Institute of Advanced Manufacturing Technology, ul. Wrocławska 37a, 30-011 Kraków, Poland

autor

Wrońska I.

• Institute of Advanced Manufacturing Technology, ul. Wrocławska 37a, 30-011 Kraków, Poland

autor

Łętocha A.

• Institute of Advanced Manufacturing Technology, ul. Wrocławska 37a, 30-011 Kraków, Poland

autor

Miller T.

• Institute of Advanced Manufacturing Technology, ul. Wrocławska 37a, 30-011 Kraków, Poland

Bibliografia

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