A Study of Bandsaw Blade Wear and Its Effects on Cutting Rates and Economics

Taylor, R.; Thompson, P.

doi:10.1007/978-1-349-81484-8_16

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…Patil [22] stated that the life of bandsaw blades increased from 88 hours to 200 hours by taking precautions with the coolant supply, the careful selection of blades, and the proper tension of the blades. Taylor and Thompson [24] suggested the use of high-speed steel (HSS) bandsaw blades, which are superior to carbon steel. Although the bandsaw blade cost is higher for high-speed steel, a longer blade life is obtained.…”

Section: Grinding Cost Of Reduced Wear Bandsaws (Rwbs)mentioning

confidence: 99%

The Cost Benefit Analysis of Reduced Wear Bandsaws

Chucheep

Mahathaninwong

Janudom

2020

SAJIE

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The objective of this work was to analyse the cost and the benefit of extending the useful life of bandsaws by improving their wear resistance in a parawood saw mill. Changeover of worn bandsaw causes downtime 15 minutes. Saw blade change frequency is two to four times per shift, at a sawn rate of 90-120 cubic feet per day. Reduced wear bandsaws can be accomplished by flame hardening, which would reduce grinding cost and losses from changeover downtime. This article therefore analyses scenarios of rubber wood processing plants in Thailand with between nine and sixty sawmills per plant and 300 working days per year. The annual scenarios analysis, based on saw blade grinding and additional flame hardening cost, has an annual fixed cost and variables cost. Implementing the flame hardening increases the costs by THB 80 319.53 to 1 021 737.99 per year. The benefits in this study indicate that reduced wear on bandsaws by implementing a flame hardening process in rubber parawood factories is economical, with benefits in the range of THB 643 577.34 to 11 446 939.60 per year. OPSOMMINGDie doel van hierdie studie is om die koste en voordeel van verlengde, bruikbare bandsaagleeftyd te ontleed. Die verlenging in bruikbare leeftyd is behaal deur hul slytasieweerstandigheid te verbeter. Dit neem 15 minute om ŉ geslyte bandsaaglem te ruil. ŉ Lem word gewoonlik twee-tot vier keer per skof geruil teen ŉ saagtempo van 90 tot 120 kubieke voet per dag. Verbeterde slytasieweerstandigheid is bewerkstellig deur vlamverharding. Hierdie verbeterde saaglemme verminder slypkoste en verliese as gevolg van produksiestilstand. Hierdie artikel ontleed verskeie rubberhout meulens in Thailand, elkeen met tussen nege en sestig meulens per aanleg en 300 werksdae per jaar. Die jaarlikse scenario-ontleding, geskoei op saaglem slyp-en vlamverhardingskoste, het ŉ jaarlikse vaste koste. Die vlamverharding verhoog die kostes met THB 80,319.53 tot THB 1,021,737.99 per jaar. Hierdie studie toon dat die verminderde slytasie van die bandsaaglemme inderdaad ekonomies is, met voordele wat wissel tussen THB 643 577.34 tot THB 11 446 939.60 per jaar.

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Section: Grinding Cost Of Reduced Wear Bandsaws (Rwbs)mentioning

confidence: 99%

The Cost Benefit Analysis of Reduced Wear Bandsaws

Chucheep

Mahathaninwong

Janudom

2020

SAJIE

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“…This situation can lead to inefficient metal removal operation by a combination of piling up, discontinuous chip formation and ploughing action in contrast to most of the single point cutting operations (e.g., turning). Although machining with bandsaws is a very old process, research efforts are very limited compared to the machining with other multipoint cutting tools (e.g., milling) [3][4][5][6]. Recent work undertaken by Sarwar et al [7][8][9][10][11] and Anderson et al [12][13][14] have lead to a better fundamental understanding of the bandsawing such as cutting forces and stress generated in the bandsaw teeth, chip formation mechanism, wear modes and mechanisms, etc..…”

Section: Introductionmentioning

confidence: 99%

Measurement of specific cutting energy for evaluating the efficiency of bandsawing different workpiece materials

Sarwar

Persson²,

Hellbergh³

et al. 2009

International Journal of Machine Tools and Manufacture

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“…The same does not apply for machining with bandsaws, which is generally considered as a low cost cutting off process. Thompson and Sarwar are among the earlier researchers [1][2][3][4][5][6], who have contributed to the fundamental understanding of cutting actions in bandsawing and wear in bandsaw tooth.…”

Section: Introductionmentioning

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 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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A Study of Bandsaw Blade Wear and Its Effects on Cutting Rates and Economics

Cited by 3 publications

References 3 publications

The Cost Benefit Analysis of Reduced Wear Bandsaws

The Cost Benefit Analysis of Reduced Wear Bandsaws

Measurement of specific cutting energy for evaluating the efficiency of bandsawing different workpiece materials

Material Behavior At The Extreme Cutting Edge In Bandsawing

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