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lubricated hot extrusion

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980323
EISBN: 978-1-62708-342-3
... temperature variation over the length of the extrusion or the stem displacement in the direct hot extrusion without lubrication of aluminium alloys Fig. 6.88 Extrusion with and without a speed profile for the same maximum exit temperature in the direct hot extrusion without lubrication of AlMgSi0.5...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000039
EISBN: 978-1-62708-312-6
... (fill density >70%), then cold isostatically compacted into a billet of 85 to 90% of theoretical density. The billet is then hot extruded in two stages at 1200 °C (2192 °F) in a conventional glass-lubricated extrusion press. The capsule material is removed by decladding. With extrusion ratios of 20...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240279
EISBN: 978-1-62708-251-8
... types of hot extrusion are nonlubricated, lubricated, and hydrostatic ( Fig. 16.17 ). In nonlubricated hot extrusion, the material flows by internal shear, and a dead-metal zone is formed in front of the extrusion die. Lubricated extrusion, as the name implies, uses a suitable lubricant, usually glass...
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
... methods, including open-die and closed-die forging, hot upset and roll forging, high-energy-rate forging, ring rolling, rotary swaging, radial and orbital forging, isothermal and hot-die forging, precision forging, and cold forging. The chapter also includes information on cold and hot extrusion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980059
EISBN: 978-1-62708-342-3
... Fig. 3.1 (a) Direct extrusion processes. (b) Indirect extrusion processes. (c) Hydrostatic extrusion processes. (d) Special extrusion processes Fig. 3.2 Process sequence of direct hot extrusion without lubrication and without a shell, with loose dummy block. a, platen; b, die holder...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
... to 0.3 in hot forming of titanium and high-temperature alloys with glass lubricants. m = 0.7 to 1.0 when no lubricant is used, e.g., in hot rolling of plates or slabs and in nonlubricated extrusion of aluminum alloys. There are numerous parameters that influence the friction and lubrication...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980195
EISBN: 978-1-62708-342-3
... metallurgical properties of the aluminum alloys. The high affinity to steel and thus the tendency to adhere to all extrusion tools has to be included in the material properties in addition to low extrusion temperature and the good extrusion weldability. Direct hot extrusion without lubrication and without...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040211
EISBN: 978-1-62708-300-3
... procedure for phosphating and lubricating billets of carbon and low-alloy steels for cold extrusion Table 17.2 Typical procedure for phosphating and lubricating billets of carbon and low-alloy steels for cold extrusion Degrease and clean slugs in a hot alkaline solution for 1 to 5 min at 151...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480207
EISBN: 978-1-62708-318-8
... extrusion vary with shapes produced using glass and those produced using grease lubrication, but all require cleaning after extrusion. Those made using the glass method are quenched, and the glass is removed either mechanically by shot blasting or chemically in hot caustic followed by acid pickling...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040295
EISBN: 978-1-62708-300-3
... are mainly due to contact with the hot workpiece and the cooling and lubrication practices. The high pressures and sliding velocities as well as the sudden changes in temperature may induce die failure due to several mechanisms. When a failure occurs, the production must stop to replace or repair the die...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980417
EISBN: 978-1-62708-342-3
...) Estimation of the possibility of design using classical elasticity theory. (c) Comments on the operating conditions. (d) Short extrusion times and glass lubrication largely prevent overheating. (e) Dependent on the lubrication. Source: Groos Working conditions for containers operating...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980141
EISBN: 978-1-62708-342-3
... in the container. (b) With feeder die. (c) In the ports of a porthole die. (d) Pulling off the discard in a bridge die [Ake 92] Fig. 4.57 Hot strength of normal and dispersion-hardened aluminum alloys [ Jan 75 ] Fig. 4.58 Dependence of the viscosity of glass lubricants on the temperature [ Sce...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230295
EISBN: 978-1-62708-298-3
...-Grained Beryllium ,” Report Y-1551, Union Carbide Corp . 10.2172/4512829 • Kawecki Berylco Industries, Inc. , 1975 . “ Beryllium—High Purity Extrusion Grade ,” File 302 6-SP2 • Meyer G.E. , 1965 . “ Casting and Hot Working of Sound Large Diameter Beryllium Ingots ,” United States Air...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.9781627083423
EISBN: 978-1-62708-342-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.9781627083003
EISBN: 978-1-62708-300-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040007
EISBN: 978-1-62708-300-3
... forging processes, including closed-die forging, extrusion, electrical upsetting, radial forging, hobbing, isothermal forging, open-die forging, orbital forging, and coining. forging processes 2.1 Introduction 2.2 Forging Operation as a System 2.3 Types of Forging Processes References...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260001
EISBN: 978-1-62708-336-2
... of material exiting the die and the amount of force required. cold extrusion hot extrusion The first chapter of this book discusses the fundamentals of extrusion technology, including extrusion principles, processes, mechanics, and variables and their effects on extrusion. The extrusion industry...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740373
EISBN: 978-1-62708-308-9
... nearly full density. The problem of powder flow is solved by compounding the fine powder with the organic binder into a coarser-grained, flowable powder. Powders containing particles exceeding 177 μm (7 mils) are sometimes used in powder forging, hot isostatic pressing, and powder extrusion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480225
EISBN: 978-1-62708-318-8
... at extremely high rates. Extrusion, like the forging process, requires lubricants that are stable at high temperatures to reduce friction and die erosion caused by hot metal as it passes through the die. Greases are effective at low temperatures. Molten glass and other ceramic lubricants are used at high...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730139
EISBN: 978-1-62708-283-9
.... Although viscous glasses often are used in hot extrusions, most hot working is done without any lubrication. The work metal tends to oxidize. Scaling of steel and copper alloys causes loss of metal and roughened surfaces. Although processing under inert atmosphere is possible, it is prohibitively...