Tool wear and inclusion behaviour during turning of a calcium-treated quenched and tempered steel using coated cemented carbide tools

Nordgren, A.; Melander, Arne

doi:10.1016/0043-1648(90)90046-d

Cited by 24 publications

(11 citation statements)

References 6 publications

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“…Such phenomenon has already been reported for free cutting steels (Brion, 1993) or engineering steels (Nordgren and Melander, 1990). These cracks may amplify the tendency of the BUL to break up and not to remain stable on the cutting tool.…”

Section: Discussionmentioning

confidence: 82%

“…BULs are observed when machining several kinds of steels: leaded and unleaded low carbon freecutting steels (Essel, 2006), low alloy medium carbon steels with various sulphur contents and calcium treatment (Bittes, 1993), calcium treated stainless steels (M'Saoubi and Chandrasekaran, 2005) BULs are detected on the rake face and the flank face of the tool, as reported by (Essel, 2006) or (Nordgren and Melander, 1990). On the rake face, the BUL is deposited in the chip flow direction and is located in the central region of the tool-chip interface (Qi and Mills, 2000).…”

Section: Built-up Layermentioning

confidence: 81%

“…Researchers have observed that BUL thickness increases and then reaches a maximum value, up to 30 µm for Helle (1995), and progressively decreases leading to a rapid tool wear. This trend has been found for freecutting steels (Brion, 1993), engineering steels (Nordgren and Melander, 1990) …”

Section: Built-up Layermentioning

confidence: 85%

“…Chip breaker largely modifies stress distribution at the tool-chip interface (Wang and Jawahir, 2007), and thus BUL location is changed. Sulphide layers were observed in the vicinity of the cutting edge and at the end of the tool-chip contact zone (Nordgren and Melander, 1990) or (Essel, 2006) when BUL is currently observed in the middle of the tool-chip interface with plane rake face.…”

Section: Built-up Layermentioning

confidence: 99%

“…Only a few authors led experiments using cutting inserts with chip breaker, for instance Essel (2006) for free cutting steels and Nordgren and Melander (1990) for engineering steels. Chip breaker largely modifies stress distribution at the tool-chip interface (Wang and Jawahir, 2007), and thus BUL location is changed.…”

Section: Built-up Layermentioning

confidence: 99%

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Experimental study of Built-Up Layer formation during machining of high strength free-cutting steel

Desaigues

Lescalier

Bomont-Arzur

et al. 2016

Journal of Materials Processing Technology

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Metz -France Abstract Machinability of high-strength steels can be improved without degrading the mechanical properties using metallurgical solutions to create or retain non-metallic inclusions. Such a metallurgical treatment usually leads, during machining, to the appearance of so-called Built-Up Layers (BULs) or transfer layers on the cutting tool. These BULs protect the tool against wear, and longer tool life or better productivity is achieved. Formation of such BULs on the cutting tool depends on many parameters i.e. tool geometry, tool material, cutting conditions. This paper proposes an experimental methodology to identify and describe BUL occurring on the tool rake face. Machining tests were carried out with a high strength free-cutting steel using an untested AlSiTiN coated carbide tool. BULs morphology and composition were determined for various cutting conditions. Temperature distributions at the tool-chip interface were measured during the cutting tests using an infrared camera. BUL appearance was then linked to the thermo-mechanical conditions at the tool-chip interface.

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Section: Discussionmentioning

confidence: 82%