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solid lubricants

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Published: 30 April 2021
Fig. 14.3 Types of solid lubricants. DLCs, diamond-like carbons; PE, polyethylene; PVDC, polyvinylidene chloride More
Image
Published: 01 December 2003
Fig. 13 (a) Indicative trends in influence of reinforcement and solid lubrication on friction and wear of high-temperature polymers. Pressure ( P ) = 1 MPa; velocity ( V ) = 1 m/s. PEN, polyethernitriale; PEEK, polyetherether ketone; PEEKK, polyetheretherketoneketone; PTFE More
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300391
EISBN: 978-1-62708-323-2
... Abstract This chapter covers the tribological properties of different types of oil, greases, solid lubricants, and metalworking and traction fluids. It explains how lubricants are made, how they work, and how they are applied and tested. It also discusses the fundamentals of lubrication...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390064
EISBN: 978-1-62708-459-8
.... It describes the three lubrication regimes (boundary, mixed, and hydrodynamic) of a Stribeck curve and the forces that maintain surface separation. It also discusses mixed, elastohydrodynamic, plastohydrodynamic, and solid or semi-solid lubrication, the effects of starvation and frictional instabilities...
Image
Published: 01 December 2003
to sliding direction: AP, antiparallel; P, parallel; and N, normal. HS CF and HM CF, high-strength and high-modulus carbon fibers; SF, short fiber; BD, bidirectional; ε f , fracture strain; and E , Young’s modulus. 1, abrasive of larger size; 2, nonabrasive filler/solid lubricant/abrasive filler More
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390100
EISBN: 978-1-62708-459-8
... lubricants (emulsions, synthetics, solutions); and a wide range of coatings and carriers. It also discusses solid-film lubricants (oxide films, polymer films, layer-lattice compounds) and environmental and safety concerns. aqueous lubricants coatings compounded lubricants greases metalworking...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350043
EISBN: 978-1-62708-315-7
... properties of the sliding surfaces). These temperatures can be calculated with some degree of certainty, as shown in Friction, Lubrication, and Wear Technology , Volume 18 of the ASM Handbook (see pages 39 to 44). Friction Coefficients for Selected Materials The friction coefficient between solids...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300335
EISBN: 978-1-62708-323-2
... or lubricate surfaces, including solid film, chemical conversion, and vacuum coatings, surface oiling and texturing, and lubricating platings. It compares and contrasts methods based on thickness and depth and their relative effect on friction, erosion, and wear. coatings friction and wear properties...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250019
EISBN: 978-1-62708-345-4
... by asperities lubricated by surface films of molecularly thin liquids, gases, or solids; this condition is known as boundary lubrication. The exclusive use of solid lubricants is called solid lubrication. For highly loaded contacts, lubricant pressure can cause elastic deformation of the surfaces...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390241
EISBN: 978-1-62708-459-8
..., heat, strain, and distortion for different tooling configurations and geometries. It explains how to select and apply lubricants based on drawing speed, die design, and other factors and how to maintain sufficient film thickness for hydrodynamic, mixed, and solid-film lubrication conditions. It also...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300421
EISBN: 978-1-62708-323-2
... during the molding operation, but a decision must be made on the percent (by volume) of silicone oil to add. Should it be 1 or 3%? Here again, bench tests can often answer the question. Sanitary sliding systems often require the use of solid lubricants, because oils can often find avenues out...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
.... As is the case with dry conditions, friction is high. Full-Film Lubrication Full-film lubrication exists when a thick layer of solid lubricant/dry coating is present between the dies and the workpiece. In this case, the friction conditions are governed by the shear strength of the lubricant film...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300013
EISBN: 978-1-62708-323-2
... (lubricant); they could be rolling in a powder or other solid particles (which is the case for tires on roadways); they can have films or treatments separating the rolling elements. Fig. 2.11 Rolling a ball on a flat produces pure rolling at a point. Rolling a ball in an “almost” conforming raceway...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300001
EISBN: 978-1-62708-323-2
..., and OECD), but in simple terms, it means any of the materials that are used in tribology. This book’s definition of tribomaterials (n) is the solids and other substances that are used to address friction, wear, erosion, and lubrication issues. Needless to say, this book cannot cover all...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300079
EISBN: 978-1-62708-323-2
... Abstract This chapter covers common types of erosion, including droplet, slurry, cavitation, liquid impingement, gas flow, and solid particle erosion, and major types of wear, including abrasive, adhesive, lubricated, rolling, and impact wear. It also covers special cases such as galling...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390284
EISBN: 978-1-62708-459-8
...: A hole pierced or machined in a billet can be maintained in the course of extrusion by a fixed or floating mandrel long enough to reach into the die land ( Fig. 10.10a ). A solid billet can be used if a separately actuated piercing ram is available. Lubricated extrusion is possible only with a hollow...
Image
Published: 30 September 2023
Figure 5.5: Modeling of lubricants in concentrated contacts. (a) Viscous lubricant (low pressure and Deborah number); (b) elastic (high Deborah number); (c) elastic-perfectly plastic solid (high pressure). More
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
... punch, a lubricant reduces pressure, provided that it does not thin excessively. A well-adhering solid lubricant is effective, but breakdown of a liquid film may allow pressures to rise above their unlubricated values. 11.3 Impression-Die Forging Impression die forging, also called closed die...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780276
EISBN: 978-1-62708-281-5
... strength than those with thermoplastics, because a higher ratio of fiber is achievable with a thermoset matrix. Incorporation of fillers also can modify wear resistance of polymers up to the order of 4. Solid lubricants mostly reduce wear and, rather essentially, friction coefficient. Similarly...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300047
EISBN: 978-1-62708-323-2
... in some way with lubricants; this section will also concentrate on the friction aspects of lubricated tribosystems. Fig. 3.12 Types of lubricants Solid film lubricants are just that—a film of some solid substance is deposited on a sliding or rolling surface in order to reduce friction...