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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400089
EISBN: 978-1-62708-316-4
... Abstract This chapter discusses the factors that must be considered when selecting a lubricant for sheet metal forming operations. It begins with a review of lubrication regimes and friction models. It then describes the selection and use of sheet metal forming lubricants, explaining how...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350043
EISBN: 978-1-62708-315-7
... Abstract This chapter discusses the basic principles of friction and the factors that must be considered when determining its effect on moving bodies in contact. It provides an extensive amount of friction data, including static and kinetic friction coefficients for numerous combinations...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300047
EISBN: 978-1-62708-323-2
... Abstract This chapter discusses the effect of friction in the context of design. It explains how friction coefficients are determined and how they are used to make sizing and selection decisions. It covers practical issues associated with rolling friction, the use of lubricants...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300013
EISBN: 978-1-62708-323-2
... Abstract This chapter reviews the types of friction that are of concern in tribological systems along with their associated causes and effects. It discusses some of the early discoveries that led to the development of friction laws and the understanding that friction is a system effect that can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780259
EISBN: 978-1-62708-281-5
... Abstract This article focuses on friction and wear as they relate to polymeric materials, covering friction and wear applications for polymeric materials. The discussion covers the causes and mechanisms of friction, wear, and lubrication; different test methods developed to simulate friction...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.9781627083232
EISBN: 978-1-62708-323-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the effect of friction and lubrication on forgings and forging operations. The discussion covers lubrication mechanisms, the use of friction laws, tooling and process parameters, and the lubrication requirements of specific materials and forging processes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040083
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the role of inverse analysis in providing input data for finite element simulations of metal forming processes. It describes the basic procedures for determining flow stress and friction by inverse analysis and for comparing experimental measurements...
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Published: 30 April 2021
Fig. 2.16 A friction force recording showing a breakaway friction force (F s ) and a lower kinetic friction force (F k ) More
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Published: 30 April 2021
Fig. 2.18 Possible friction force outputs from friction test rigs More
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Published: 30 April 2021
Fig. 3.8 Schematic of commonly used friction tests; N, load; F, friction force; T, tension More
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Published: 30 April 2021
Fig. 5.8 Typical friction force outputs from a pin-on-disk friction test More
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Published: 01 February 2005
Fig. 7.7 Metal flow in ring compression test. (a) Low friction. (b) High friction More
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Published: 01 October 2011
Fig. 6.35 Friction stir welding process. (a) Process schematic. (b) Weld zone showing regions of heat-affected zone (HAZ) and thermomechanical-affected zone (TMAZ). Source: Ref 6.11 More
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Published: 01 August 1999
Fig. 11.5 (Part 1) Friction butt weld of mild steel to mild steel (0.15% C, 0.15C-0.20Si-0.56Mn, wt%) bar. (a) Weld region. 5% nital. 2×. (b) Weld region. Arrow indicates approximate position of the weld interface. 3% nital. 100×. (c) Fully austenitized zone immediately adjacent to weld More
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Published: 01 August 1999
Fig. 11.5 (Part 2) Friction butt weld of mild steel to mild steel (0.15% C, 0.15C0.20Si-0.56Mn, wt%) bar. (a) Weld region. 5% nital. 2×. (b) Weld region. Arrow indicates approximate position of the weld interface. 3% nital. 100×. (c) Fully austenitized zone immediately adjacent to weld More
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Published: 01 August 1999
Fig. 11.6 (Part 1) Friction butt weld of mild steel to mild steel (0.15% C) bar. The structure of unaffected parent metal was similar to that shown in Fig. 11.5 (Part 2) (f) . Its hardness was 190 HV. (a) Weld region. 2% nital. 2×. (b) Weld region. Picral. 100×. (c) Central region More
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Published: 01 August 1999
Fig. 11.6 (Part 2) Friction butt weld of mild steel to mild steel (0.15% C) bar. The structure of unaffected parent metal was similar to that shown in Fig. 11.5 (Part 2) (f) . Its hardness was 190 HV. (a) Weld region. 2% nital. 2×. (b) Weld region. Picral. 100×. (c) Central region More
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Published: 01 August 1999
Fig. 11.7 Friction butt weld of mild steel (0.15% C) to 18-8 austenitic stainless steel bars, (a) Weld region. 2% nital. 2×. (b) Weld junction. Picral. 100×. (c) Weld junction. Picral. 1000×. (d) Region adjacent to weld junction. Picral. 1000×. More
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Published: 01 November 2011
Fig. 6.16 Fundamental steps in the friction welding process: (a) one workpiece is rotated, and the other workpiece is held stationary; (b) both workpieces are brought together, and an axial force is applied to begin the upsetting process; (c) workpiece rotation is stopped, and the upsetting More