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Lubrication systems

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Published: 30 September 2023
Figure 11.41: Lubricant system applied to aluminum alloys depending on severity of application as expressed by surface expansion [ 328 ]. More
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Published: 01 February 2005
Fig. 17.5 Choice of lubricant system for different aluminum alloys for different processes [ Bay, 1997 ] More
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Published: 01 February 2005
Fig. 7.5 Zinc phosphate coating and soaping lubrication system. [ Bay, 1994 ] More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
... or dangerous gases Be easily applicable to and removable from dies and workpiece Be commercially available at reasonable cost 7.6 Lubrication Systems for Cold Forging The choice of which lubricant to use for a cold forging process depends on the severity of the operation (i.e., process...
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Published: 30 April 2021
Fig. 2.12 Stribeck curve showing how lubricated tribosystems can have system coefficient of friction (COF) vary with viscosity and operating conditions More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1985
DOI: 10.31399/asm.tb.sagf.t63420027
EISBN: 978-1-62708-452-9
... bevel or hypoid gearing. Keep in mind also that the bearings may be running in the same lubricant as the gears, and they, too, require that certain characteristics are present. A constant juggle of several characteristics of an oil is necessary in order to satisfy all moving components within a system...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250019
EISBN: 978-1-62708-345-4
... (physical and chemical) Environmental characteristics (physical and chemical) Lubrication Regimes Throughout this chapter a number of different types of lubrication regimes are discussed. Lubrication regimes are the ranges of operating conditions for lubricated tribological systems that can...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300013
EISBN: 978-1-62708-323-2
... but at this point it may be helpful to establish the chronology of our known friction laws: Newton (c. 1687) Friction in lubricated systems depends on the properties of the fluid (viscosity). Amontons (c. 1699) Friction is caused by interference of surface rugosities. Euler (c. 1750...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390100
EISBN: 978-1-62708-459-8
... and Workpiece Materials . The lubricant must perform its function in the system defined by the die and tool surfaces, the old and new metal surfaces, and the surrounding atmosphere. Thermal Insulation . In hot working operations, the lubricant should provide thermal insulation between workpiece and die...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400089
EISBN: 978-1-62708-316-4
... for various lubricants (Lub) tested at a high blank holder force (BHF). Source: Ref 7.19 In the automotive stamping operation, the sheet panels carry various oils, such as mill oil, washer oil, and press lubricant. As a result, the lubrication system becomes more complicated, and the stamping...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300047
EISBN: 978-1-62708-323-2
... one pays for the extra fuel economy. Overall, rolling is always preferred over sliding, but there are still issues with rolling element bearings and other rolling systems that designers need to be aware of and deal with. 3.4 Lubricated Tribosystems There are many kinds of lubricants ( Fig...
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
... impact of forging is discussed in Sec. 6.9 . The progression of industry towards more benign lubricant systems has been slow, mainly because the conventional alternatives are, for the most part, superior. Still, many innovations are environmentally driven, and will be mentioned throughout this chapter...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980323
EISBN: 978-1-62708-342-3
... ... ... I, II ... Die ... ... ... I, II Die changer Die II, III ... I, II ... Die set II, III ... I, II ... Cooling system Die ... ... I, II ... Container ... ... I, II ... Dummy block ... ... I, II ... Lubrication system Dummy block ... ... I, II...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390173
EISBN: 978-1-62708-459-8
... the friction and wear that occur in hot and cold rolling under hydrodynamic and mixed-film lubrication; the influence of viscosity, film thickness, rolling speed, interface pressure, pass reduction, and lubricant breakdown; and the effect of surface finish and defects. The chapter also provides best practices...
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
..., but the constriction at the die leads to a pressure increase. On starting up, such a system traverses the entire Stribeck curve ( Fig. 5.6 ). Initially, boundary lubrication prevails and there is danger of die pickup; friction is high, but it drops rapidly as the film thickness builds up, and then rises again when...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300421
EISBN: 978-1-62708-323-2
... systems and lubricants covered in prior chapters. It then presents a systematic approach for selecting tribomaterials, using an automotive fan motor as an example. friction and wear applications lubricant selection material selection tribomaterials 15.1 The Role of Tribology in Selection...
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 engineering materials and coatings. It also describes the causes and effects of the most common forms of wear, the conditions under which they occur, the role of lubrication, and wear testing methods. friction coefficient lubrication wear wear testing FRICTION, WEAR, AND LUBRICATION are complex...
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
... and is thus very sensitive to temperature. With increasing temperature, viscosity drops, increasingly so in lubricants of higher viscosities. Again, a large number of equations have been proposed to explain this observation. In addition, a very practically oriented system still used today compares...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250311
EISBN: 978-1-62708-345-4
... are sliding against each other, with lubrication, under high load. Therefore, some indication of the lubricated wear resistance of the material being tested can be obtained. In addition, the resistance of the material/surface finish/lubricant system to scuffing can be studied. Tests are conducted at very high...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300391
EISBN: 978-1-62708-323-2
... is reduced by a factor that depends on the amount of surface separation and the nature of the lubricant. Slipperiness of the Lubricant Under boundary and hydrodynamic conditions, the viscosity of the liquid strongly influences system friction, because viscosity is a product of the internal friction...