Wear of the cutting edge in the bandsawing operation when cutting austenitic 17-7 stainless steel

Sarwar, Mohammed; Persson, Mattias; Hellbergh, Hakan

doi:10.1016/j.wear.2006.12.066

Cited by 15 publications

(11 citation statements)

References 1 publication

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“…In general, the principal wear modes in any bandsaw tooth can be identified as flank wear, corner wear and small rake face wear. In High Speed Steel (HSS) bimetal bandsaw tooth, flank and corner wear are developed due to the abrasive action between the tooth and the machined workpiece with small to large amount of adhesive wear depending the properties of the workpiece materials [9,10]. Plastic deformation of the tooth can also be observed at the end of tooth life due to the generation of excessive frictional heat.…”

Section: Wear Modes and Mechanisms In Bandsaw Teethmentioning

confidence: 99%

“…Furthermore, owing to the generation of high temperature at higher feeds and speeds, elements in the carbide tooth (C and Co) could diffuse into the workpiece resulting tooth weakening and accelerated wear in the tooth. Cutting forces and specific cutting energy are found to be the important parameters to evaluate the wear condition of the bandsaw tooth through out its useful life [10,11].…”

Section: Wear Modes and Mechanisms In Bandsaw Teethmentioning

confidence: 99%

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Material Behavior At The Extreme Cutting Edge In Bandsawing

Sarwar

Haider

Persson³

et al. 2011

AIP Conference Proceedings

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In recent years, bandsawing has been widely accepted as a favourite option for metal cutting off operations where the accuracy of cut, good surface finish, low kerf loss, long tool life and high material removal rate are required. Material removal by multipoint cutting tools such as bandsaw is a complex mechanism owing to the geometry of the bandsaw tooth (e.g., limited gullet size, tooth setting etc.) and the layer of material removed or undeformed chip thickness or depth of cut (5 µm -50 µm) being smaller than or equal to the cutting edge radius (5 µm -15 µm). This situation can lead to inefficient material removal in bandsawing. Most of the research work are concentrated on the mechanics of material removal by single point cutting tool such as lathe tool. However, such efforts are very limited in multipoint cutting tools such as in bandsaw. This paper presents the fundamental understanding of the material behaviour at the extreme cutting edge of bandsaw tooth, which would help in designing and manufacturing of blades with higher cutting performance and life. "High Speed Photography" has been carried out to analyse the material removal process at the extreme cutting edge of bandsaw tooth. Geometric model of chip formation mechanisms based on the evidences found during "High Speed Photography" and "Quick Stop" process is presented. Wear modes and mechanism in bimetal and carbide tipped bandsaw teeth are also presented.

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Section: Wear Modes and Mechanisms In Bandsaw Teethmentioning

confidence: 99%

Section: Wear Modes and Mechanisms In Bandsaw Teethmentioning

confidence: 99%

Material Behavior At The Extreme Cutting Edge In Bandsawing

Sarwar

Haider

Persson³

et al. 2011

AIP Conference Proceedings

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“…In general, abrasion, adhesion, BUE formation, diffusion and cracking were observed the common wear mechanisms in carbide tools during widely used Inconel machining processes such turning 1,5,[16][17][18] , milling 3,10,13,[19][20][21] and drilling 22-24. In contrast to other sawing techniques, bandsawing is widely used in cutting off operations and offer competitive advantages of higher metal removal rate, lower kerf loss, better straightness of cut, competitive surface finish and a longer tool life. A number of scientific studies have been reported in the literature to provide an insight about bandsaw tooth design, mechanics of bandsawing, bandsaw performance and wear modes and mechanisms in bandsaw cutting edges [25][26][27][28] . Majority of these studies were focused on the bandsawing of steel workpieces with bimetal high-speed steel bandsaws 29 .…”

Section: Introductionmentioning

confidence: 99%

Investigating tool performance and wear when simulating bandsawing of nickel-based superalloy under interrupted orthogonal turning condition

Khan

Haider

Persson³

2017

Proceedings of the Institution of Mechanical Engineers, Part B:

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The manufacturing industries still face the most challenging job at hand to machine Nickelbased superalloy, Inconel 718, efficiently and economically. In contrast to the extensive research efforts in secondary machining processes such as turning, milling and drilling, very little or no attention is paid on bandsawing of Inconel 718. The paper presents an experimental investigation of machining Inconel 718 using carbide tipped bandsaw teeth in a custom made experimental facility. Cutting forces were measured during the bandsawing operation using a dynamometer and the wear modes and mechanisms in the bandsaw teeth were investigated in a Scanning Electron Microscope (SEM). Three different feeds or depths of cut (10 μm, 20 μm and 30 μm) were employed with a cutting speed of 30 m/min during the machining tests. At smaller feed or depth of cut (10 μm), abrasive wear, adhesive wear and some degree of plastic deformation were identified as the governing mechanisms of tool wear. The higher depth of cut (30 μm) could cause cracking, chipping or premature failure of the carbide tip in bandsaw tooth. Strong welding of workpiece material to the cutting edge formed a built-up-edge (BUE), which would impair the bandsawability due to the modification of the cutting edge. The higher depth of cut significantly improved the machining performance due to the reduction in specific cutting energy. However, it was not recommended to apply higher depth of cut as there were obvious possibilities of premature tooth failure. Machining force and specific cutting energy results along with chip characteristics were correlated with the tool performance and tool wear. The results of this investigation would be helpful for bandsaw manufacturers and end users to get a fundamental understanding of the bandsawability of Inocnel 718 with the carbide tipped bandsaw.

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“…Extensive literature review shows that the forms of tool wear that have been widely studied are crater wear [6] and [7] and flank wear [8] and [9]. In contrast, there is little research on another important form of tool wear called tool-edge wear [10]. Tool-edge wear is defined as "the wear of a tool cutting edge before it is fully worn away [11]."…”

Section: Introductionmentioning

confidence: 99%

Tool-Edge Wear and Wavelet Packet Transform Analysis in High-Speed Machining of Inconel 718

Fang

Pai

Edwards

2012

SV-JME

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Tool-edge wear (i.e., the wear of a tool cutting edge before it is fully worn away) is among significant concerns in high-speed machining because it can result in early tool failure and deteriorated quality of machined parts. Based on extensive experimental results, this paper shows how tool-edge wear is correlated with the cutting forces and vibrations in high-speed turning of Inconel 718. The following research findings are made from the present study: 1) The development of tool-edge wear depends on the initial tool-edge geometry and the cutting conditions employed.2) The amount of tool-edge wear varies at different measurement points along the tool cutting edge, and increases as the feed rate increases.3) The effect of tool-edge wear on the cutting forces depends on the initial tool-edge geometry and the cutting conditions employed. 4) The traditional time-domain analysis based on the vibration amplitude is not helpful in explaining and showing the dynamic development of tool-edge wear, and wavelet packet transform helps in identifying the changes in the vibration signals in different frequency bands.

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Wear of the cutting edge in the bandsawing operation when cutting austenitic 17-7 stainless steel

Cited by 15 publications

References 1 publication

Material Behavior At The Extreme Cutting Edge In Bandsawing

Material Behavior At The Extreme Cutting Edge In Bandsawing

Investigating tool performance and wear when simulating bandsawing of nickel-based superalloy under interrupted orthogonal turning condition

Tool-Edge Wear and Wavelet Packet Transform Analysis in High-Speed Machining of Inconel 718

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