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Lubrication

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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 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...
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 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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250019
EISBN: 978-1-62708-345-4
...Abstract Abstract This chapter reviews the knowledge of the field of gear tribology and is intended for both gear designers and gear operators. Gear tooth failure modes are discussed with emphasis on lubrication-related failures. The chapter is concerned with gear tooth failures...
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Published: 01 February 2005
Fig. 7.2 Stribeck curve showing onset of various lubrication mechanisms. [ Schey, 1983 ] More
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Published: 01 February 2005
Fig. 7.5 Zinc phosphate coating and soaping lubrication system. [ Bay, 1994 ] More
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Published: 01 February 2005
Fig. 7.6 Die lubrication process in warm and hot forging. [ Doege et al., 1996 ] More
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Published: 01 August 2012
Fig. 7.1 Factors that affect friction and lubrication in sheet metal forming. UTS, ultimate tensile strength More
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Published: 01 August 2012
Fig. 7.2 Stribeck curve showing onset of various lubrication mechanisms. η, lubricant viscosity; v , sliding velocity; p , normal pressure; μ, coefficient of friction. More
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Published: 01 August 2012
Fig. 7.11 Flange perimeters and punch forces recorded for 11 lubrication conditions at a BHF of 20 tons. M, mill oil; W, washer oil; L, press lube. Source: Ref 7.21 More
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Published: 01 December 2006
Fig. 3.2 Process sequence of direct hot extrusion without lubrication and without a shell, with loose dummy block. a, platen; b, die holder; c, die; d, container; e, billet; f, dummy block or pressure pad; g, extrusion stem More
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Published: 01 December 2006
Fig. 3.3 Process sequence of direct hot extrusion without lubrication and without a shell, with dummy block fixed to the stem. a, platen; b, die holder; c, die; d, container; e, billet; f, dummy block or pressure pad; g, extrusion stem More
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Published: 01 December 2006
Fig. 3.4 Billet-on-billet direct hot extrusion without lubrication and without a shell, with dummy block fixed to the stem. a, platen; b, die holder; c, die; d, container; e, billet; f, dummy block; g, extrusion stem; h, discard from the previous extrusion More
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Published: 01 December 2006
Fig. 3.8 Stage in hot direct extrusion of AlMg3 without lubrication and without a shell (container diam = 140 mm; extrusion ratio V = 50; initial billet length = 450 mm; initial billet temperature = container temperature = 450 °C) More
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Published: 01 December 2006
Fig. 3.9 Material flow zones in direct hot extrusion without lubrication and without a shell. A, primary deformation zone; B, secondary deformation zone; C, friction affected peripheral zone; D, dead metal zone; E, billet core; a, container; b, die; c, die holder; d, dummy block; e, stem; f More
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Published: 01 December 2006
Fig. 3.25 Process sequence in direct hot extrusion without lubrication and with a shell of copper alloys. a, platen; b, die holder; c, die; d, container; e, billet; f, dummy block; g, extrusion stem; h, cleaning billet; i, discard tube; k, shell; l, discard More
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Published: 01 December 2006
Fig. 3.31 Principal material flow in direct hot extrusion with lubrication without a shell More
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Published: 01 December 2006
Fig. 3.33 Process sequence in direct cold extrusion with lubrication and without a shell. a, platen; b, die holder; c, die; d, container; e, billet; f, stem with fixed dummy block; g, manipulator; h, saw More
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Published: 01 December 2006
Fig. 3.45 Process sequence for the indirect extrusion without lubrication and with a shell. a, platen; b, hollow stem holder; c, hollow stem; d, die; e, billet; f, container; g, sealing stem; h, cleaning block; i, shell; j, discard tool. See [ Bis 75 ]. More
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Published: 01 December 2006
Fig. 3.55 Principal depiction of indirect cold extrusion with lubrication and without a shell [ Sie 77 ] More
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Published: 01 December 2006
Fig. 3.57 Process sequence for indirect cold extrusion with lubrication and without a shell. a, platen; b, die holder; c, hollow stem; d, die; e, billet; f, container; g, sealing stem; h, lubricant film; i, separator; j, manipulator More