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Taylor's tool life equation

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200377
EISBN: 978-1-62708-354-6
... on tool life can best be explained by Taylor’s equation. In simplified form, it is stated as follows: (Eq 26-1) V T n = C where: V = cutting speed, T = tool life, n = exponent depending upon tool material, workpiece material, cutting conditions, and environment, and C...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500317
EISBN: 978-1-62708-317-1
... by wear, galling, cracking, chipping, or plastic deformation of the tools. Therefore, proper selection of tool materials, surface and heat treatments, and surface coatings is essential to optimize the tool life (i.e., number of acceptable stamped parts). 16.1 Background Tool Failure Mechanisms...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060117
EISBN: 978-1-62708-261-7
...—such as a billet or a blanked sheet, for example—can be plastically deformed by a set of tools (or dies) to obtain the desired final thickness and geometrical configuration. Metal forming processes can be classified into two general categories: Bulk, or massive, forming operations Bending and sheet...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110666
EISBN: 978-1-62708-247-1
... long-term wearout due to an individual failure mechanism. Figure 5 depicts the shape of the curve. Figure 5 The Lognormal distribution curve for several shape factors. The Exponential Distribution The Exponential Distribution is commonly used for life expectancy. The equation...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390456
EISBN: 978-1-62708-459-8
... and extend the life of cutting tools based on the material of construction, the use of cutting fluids, and the means of lubrication. It presents various methods for evaluating workpiece materials, chip formation, wear, and surface finish in cutting processes such as turning, milling, and drilling. It also...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.9781627083447
EISBN: 978-1-62708-344-7
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870201
EISBN: 978-1-62708-344-7
...Equations for the three basic modes of fracture Table 9.1 Equations for the three basic modes of fracture Mode I σ x = K I ( 2 π r ) ½ cos ⁡ θ 2 [ 1 − sin ⁡ θ 2 sin ⁡ 3 θ 2 ] σ y = K I...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630257
EISBN: 978-1-62708-270-9
... parameter range, which characterizes the cyclic stresses and strains ahead of the crack tip. The Paris equation describes crack growth behavior over a fairly broad range of Δ K . The cyclic life is computed by integration of the crack growth-rate equation or by numerical integration of crack growth-rate...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850334
EISBN: 978-1-62708-260-0
... and Equotip hardness tests, and microindentation tests. It describes the equipment and procedures used, discusses the factors that influence accuracy, and provides hardness conversion equations for different types of materials. It also explains how hardness testing sheds light on anisotropy, machinability...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.9781627083003
EISBN: 978-1-62708-300-3
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610147
EISBN: 978-1-62708-303-4
... environment being considered in a real history for a fatigue analysis. By equating the elastic and plastic components of total strain, the transition fatigue life can be calculated as: (Eq 14) 2 N f = ( ε f ′ E σ f ′ ) 1 ( b − c...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300047
EISBN: 978-1-62708-323-2
... and actions that are part of our everyday life that depend on a favorable coefficient of friction such as stopping of our vehicle in our daily commute (roadway versus tire friction and brake pad versus brake disk or drum must be high); friction of hair versus hand must meet expectations (after conditioner...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870375
EISBN: 978-1-62708-344-7
... as plastic and fiber; highly crystalline; strong affinity for water Gears and bearings; rollers; wheels; pulleys; power tool housings; light machinery components; fabric Poly(tetrafluoroethylene) (Teflon, Dupont, Wilmington, DE) Extremely high molecular weight; high crystallinity; extraordinary...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060091
EISBN: 978-1-62708-355-3
... 4.39 0.367 Steel, mild 211 30.7 169 24.5 82 11.9 0.291 Steel, 0.75 C 210 30.5 169 24.5 81 11.8 0.293 Steel, 0.75 C, hardened 201 29.2 165 23.9 78 11.3 0.296 Steel, tool steel 211 30.7 165 24.0 82 11.9 0.287 Steel, tool steel, hardened 203 29.5 165 24.0...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490265
EISBN: 978-1-62708-340-9
...Damage locations, causes, and remedies for steam turbine components (<xref ref-type="bibr" rid="t60490265-ref6">Ref 6</xref>) Table 6.1. Damage locations, causes, and remedies for steam turbine components ( Ref 6 ) Component Position Cause of life exhaustion Time of remedial action...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390325
EISBN: 978-1-62708-459-8
... T is the temperature difference between workpiece and tooling. Equation (11.6) was shown to agree with experimental measurements [ 25 , 26 ], but can be difficult to apply because the lubricant film thickness must be known. As shown by Eq. (11.7) , the heat loss increases with increasing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270031
EISBN: 978-1-62708-301-0
... ). The largest change in the calculated component life is caused by errors in the value of m , the exponent in the kinetic equation, and T , the temperature of exposure. Other Correlations A number of other correlations between oxide thickness, time, and temperature have been proposed for low-alloy Cr...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900067
EISBN: 978-1-62708-358-4
... and tungsten. Although Eq 5–1 has not been specifically developed for tool steels, it and similar equations invariably show the powerful effect of carbon on M s temperatures and that all alloying elements commonly used in steels, with the possible exception of cobalt, lower M s temperatures. As a result...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040059
EISBN: 978-1-62708-300-3
... into the tooling. The temperatures developed during the forging operation influence lubrication conditions, tool life, as well as microstructure and properties of the forged part. With the finite element based process modeling, the heat generation during deformation and heat transfer before, during, and after...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.9781627083232
EISBN: 978-1-62708-323-2