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nonlubricated environments

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350043
EISBN: 978-1-62708-315-7
... of the surrounding environment Force holding the solids in contact (load) Velocity of relative motion Nature of the relative motion (for example, unidirectional, back and forth, steady, variable, and so on) Nature of the contact (conforming versus nonconforming surfaces) Temperature of the interfacial...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
... at the interface and only the oxide layers present on the die and workpiece materials may act as a “separating” layer. In this case, friction is high, and such a situation is desirable in only a few selected forming operations, such as hot rolling of plates and slabs and nonlubricated extrusion of aluminum alloys...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250019
EISBN: 978-1-62708-345-4
... failures into two broad groups: Nonlubrication-related failure Lubrication-related failure As shown in Table 2 , nonlubrication-related failures include both overload and bending fatigue types of failure. Lubrication-related failures, the focal point in this chapter, include Hertzian...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400089
EISBN: 978-1-62708-316-4
... a few selected forming operations, such as hot rolling of plates or slabs and nonlubricated extrusion of aluminum alloys. Boundary lubrication ( Fig. 7.2 ) is defined as a condition where the solid surfaces are so close together that surface interaction between single or multimolecular films...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740103
EISBN: 978-1-62708-308-9
...–60,000 1,200 900,000 4.5–9 15–30 50–65 Source: Ref 6 Fig. 7 Section through a forging, die finisher impression showing flash clearance, flash land, and gutter. Source: Ref 7 Fig. 32 Schematics of the (a) nonlubricated, (b) lubricated, and (c) hydrostatic extrusion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250257
EISBN: 978-1-62708-345-4
..., but it may also be a form of wear. Source: Ref 2 Errichello ( Ref 3 ) has classified gear failures into two broad groups: Nonlubrication-related failures Lubrication-related failures As shown in Table 2 in Chapter 2, “Gear Tribology and Lubrication,” nonlubricated-related failures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260149
EISBN: 978-1-62708-336-2
.... Reiso ( Ref 4 ) investigated billet preheating practices in an industrial environment for two different AlMgSi alloys to determine extrudability. It was shown that extrudability, as well as the mechanical properties and surface quality, may be significantly improved by using billet preheating practices...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040159
EISBN: 978-1-62708-300-3
... and in nonlubricated extrusion of aluminum alloys 14.2.4 Heat Transfer and Temperatures Heat transfer between the forged material and the dies influences the lubrication conditions, die life, properties of the forged product, and die fill. Often, temperatures that exist in the material during forging...
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.9781627083003
EISBN: 978-1-62708-300-3