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surface quality

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Published: 01 December 2006
Fig. 5.21 Influence of the finish of the bearing surface on the quality of the section surface [ Tok 88 ] No. Finish Roughness, μm Billet temperature, °C 1 Ground parallel in direction of extrusion 1.50–1.75 450 2 Ground parallel in direction of extrusion 0.50–0.75 450 More
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Published: 01 January 2015
Fig. 12.14 Surface appearance of a good-quality friction stir weld in 6.35 mm (0.25 in.) thick Ti-6Al-4V. Source: Ref 12.18 More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
... Abstract The inspection of castings normally involves checking for shape and dimensions, coupled with aided and unaided visual inspection for external discontinuities and surface quality. This chapter discusses methods for determining surface quality, internal discontinuities, and dimensional...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040151
EISBN: 978-1-62708-300-3
... Abstract Separation of billets by shearing avoids material loss and is considerably faster than sawing or cutting. This chapter discusses the billet shearing process, the characteristics of sheared surfaces, and the effect of various operating parameters on surface quality. It also includes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480265
EISBN: 978-1-62708-318-8
... Abstract This chapter discusses the various methods used to join titanium alloy assemblies, focusing on welding processes and procedures. It explains how welding alters the structure and properties of titanium and how it is influenced by composition, surface qualities, and other factors...
Image
Published: 01 January 2015
Fig. 9.12 Sejournet glass-lubricated extrusion process. Billet surface preparation and heating are important in contributing to extruded surface quality. More
Image
Published: 01 August 2018
Fig. 12.38 AISI 1006 steel hot rolled, pickled, and subjected to a skin pass cold work (a small cold reduction of the surface to guarantee good surface quality and precise thickness). Equiaxial ferrite and pearlite inside the plate. On the surface region, the ferrite grains are elongated More
Image
Published: 01 August 2018
Fig. 5.2 (a) Schematic cross section through a sample subjected to polishing, indicating the three most relevant thicknesses, related to the surface quality: e r —rugosity, e d —deformed thickness, and e t —total thickness affected by the polishing process. (b) Evolution of the three More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260245
EISBN: 978-1-62708-336-2
... of the die bearing and extrusion to understand the friction model at the bearing-material interface Study of the different methods and compounds for the thin, hard coating on the bearing surface and their effect on extrusion surface quality, the die wear, and finally, the die life Design...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060175
EISBN: 978-1-62708-261-7
... inclusion requirement Special surface Carbon steel structural sections Structural quality Carbon steel plates Regular quality Structural quality Cold-drawing quality Cold-pressing quality Cold-flanging quality Forging quality Pressure vessel quality Hot-rolled carbon steel bars...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900163
EISBN: 978-1-62708-350-8
... be expensive due to effluent problems caused by the cyanide-base plating solution, which must be neutralized. Nickel is difficult to strip, and the stripping process could affect part surface quality. Paint-On Methods Proprietary brands of stop-off paints generally contain a liquid carrier...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260087
EISBN: 978-1-62708-336-2
... and manufacture of aluminum extrusion dies with increasing complexity of shape, thickness of section, and quality of surface. Some of this experience is captured in empirical design rules, but extrusion die design is still dependent on personal judgment, intuition, and experience. No two dies of the identical...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340117
EISBN: 978-1-62708-427-7
... (when the hot mill is ready) where the temperature will be measured and recorded. Hot Rolling The process of hot rolling aluminum affects the three major attributes of sheet and plate products: dimensional , metallurgical , and surface quality . Metallurgically, the action of repeated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260119
EISBN: 978-1-62708-336-2
... flow must be adjusted so that the water will wet the entire surface of the ingot being cast and cascade down its surface. The water must be prevented from bouncing off the ingot surface. In summary, the overall production performance and quality of DC cast billet are influenced by the factors...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500249
EISBN: 978-1-62708-317-1
... diameter ( D max ), the minimal wall thickness ( s min ), the tendency of wrinkling (TW), and the effects on the surface quality (SQ) are considered. Effect of process variables in forming of a round cup by spinning Table 12.1 Effect of process variables in forming of a round cup by spinning...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260149
EISBN: 978-1-62708-336-2
... characteristics, including ease of extrudability into hollow and complex shapes, simplicity in heat treatment, good electrical conductivity, satisfactory mechanical properties, good surface finish quality, high corrosion resistance, and good weldability for a wide variety of applications. Several million tons...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980551
EISBN: 978-1-62708-342-3
... planning meetings by the press crew establish individual controls testing of the quality characteristics (e.g., shape, roughness, surface quality, weld quality) during contract processing, up to the point of section packing. Regular monitoring of internal customer requirements by communication...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260213
EISBN: 978-1-62708-336-2
... are the billet, the die, the extrusion press, the extrusion process, stretching, cutting, heat treatment, and surface treatments. Fig. 1 Typical flow diagram of an extrusion quality control system This chapter presents a complete process and quality control system to enable effective control...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220069
EISBN: 978-1-62708-259-4
... (and to evaluate the quality of the sample preparation for flatness, scratches, etc.) Etching of the surface with an adequate etchant Examination of the etched surface to evaluate the microstructure Recording of the microstructure (photographic) Selection of a Section to Be Examined...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110153
EISBN: 978-1-62708-247-1
... on the thickness and nature of the substrate but also the quality of the illuminated image taken from the backside of the die. To minimize diffuse light scattering (caused by scratches and irregularities at the surface of the die that deteriorate image quality) a mean surface roughness of less than 5 nm...