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Pulverizers

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Published: 31 August 2017
Fig. 37 High-chromium (ASTM III-A) tire and wear track segment for coal pulverizing. Courtesy of Columbia Steel Casting Co. More
Image
Published: 31 August 2017
Fig. 41 High-chromium (ASTM II-D) coal-pulverizer ring. Courtesy of GIW Industries, Inc. More
Image
Published: 01 January 2002
Fig. 11 6150 steel coal pulverizer shaft that failed by fatigue. (Left) Section through pulverizer showing the inner main shaft that fractured, repaired itself by friction welding, and fractured a second time. (Right) Photograph of the friction welded surface More
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003162
EISBN: 978-1-62708-199-3
... alloys. Hardfacing applications for wear control vary widely, ranging from very severe abrasive wear service, such as rock crushing and pulverizing to applications to minimize metal-to-metal wear. This article discusses the types of hardfacing alloys, namely iron-base alloys, nonferrous alloys...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001104
EISBN: 978-1-62708-162-7
.... Almost 50% of the total production of cemented carbides is used for nonmetal cutting applications. Their properties also make them appropriate materials for structural components, including plungers, boring bars, powder compacting dies and punches, high-pressure dies and punches, and pulverizing hammers...
Image
Published: 01 January 2002
. 1, wear of matrix by plowing, cracking, cutting as a result of plastic deformation; 2, wear thinning of fiber or tip resulting in elliptical, well-polished tip; 3, matrix cracking; 4, edge delamination and fiber fibrillation; 5, fiber cracking; 6, pulverized fiber wear debris; 7, deterioration More
Image
Published: 31 December 2017
Fig. 2 (a) Severe corrosion with enhanced mechanical wear, and (b) moderate corrosion of bottom surface covered with passivating film by creating debris through film pulverization by sliding top surface More
Image
Published: 01 January 2002
Fig. 14 Diagram of the stages of delamination caused by repeated impact on a ceramic surface. Stage 1 fracturing on the surface and crushing of debris; stage 2, extrusion of pulverized debris in interstices and compaction of a fine grained film; stage 3, nucleation of cracks along the weak More
Image
Published: 01 January 2002
of microcracking. (c) Initiation of fiber pulverization. Source: Ref 29 More
Image
Published: 15 January 2021
Fig. 16 Schematic diagram of the stages of delamination caused by repeated impact on a ceramic surface. Stage 1, fracturing on the surface and crushing of debris; stage 2, extrusion of pulverized debris in interstices and compaction of a fine-grained film; stage 3, nucleation of cracks along More
Image
Published: 01 January 2002
Fig. 19 Scanning electron microscope micrographs of worn surfaces of PA66 unidirectional composites. (a) Carbon fiber (parallel, P) showing fiber thinning, fiber fracture, fiber pulverization (left portion) and fiber matrix debonding (middle portion). (b) Aramid fiber (AF) in the normal More
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004161
EISBN: 978-1-62708-184-9
... using coal as a primary fuel. The combustion process—cyclone, pulverized-coal, or fluidized-bed firing—determines the type and characteristics of the ash. Waste ash, fly ash, and bottom ash are generated in large volumes and must be dealt with in an environmentally acceptable manner. Fly ash comprises...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
..., was at 30% loading of short GF. The difference in the severity of the fiber damage in the 10% polyetherimide (PEI) composite due to these different grit sizes can be seen in Fig. 6(a) and (b) . The various stages of fiber cracking, cutting, and pulverization in 30% GF composite are shown in Fig. 6(c...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006087
EISBN: 978-1-62708-175-7
.... In these cases, the gaseous metal chlorides are reduced with liquid sodium or magnesium (Kroll process). The reaction product is leached with dilute hydrogen chloride to remove sodium chloride and/or magnesium chloride. The result is a metallic sponge material that is subsequently pulverized. Hydride...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004144
EISBN: 978-1-62708-184-9
..., industrial gas turbine, and combined-cycle power plants. The most common and widely used is the pulverized-coal-fired steam power plant. Because of the complex and corrosive environments in which power plants operate, corrosion has been a serious problem, with a significant impact on reliability...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003432
EISBN: 978-1-62708-195-5
... to degrade the complex; and IR, to identify the amine form. Fillers and Modifiers Fillers are often used in the form of ground or pulverized inorganic materials to improve dispersion and reactivity or provide increased surface area for flow control. Screens of increasing size are stacked to separate...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005327
EISBN: 978-1-62708-187-0
... carrying abrasive slurries, and grizzly disks. Type B is recommended for applications requiring more strength and exerting moderate impact, such as crusher plates, crusher concaves, and pulverizer pegs. Class I type D, Ni-Hard type 4, has a higher level of strength and toughness and is therefore used...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006555
EISBN: 978-1-62708-290-7
... laser and light sources. Metal parts are produced using electron and laser beam approaches. Virtually any pulverized material can be used in PBF when a suitable transient or permanent binder is mixed with the primary feedstock. Postprocessing may be used in the case of metal and ceramic parts to either...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006089
EISBN: 978-1-62708-175-7
.... 20 Raw material stream impacting a target and shattering in Coldstream impact process Rapidly expanding gases exiting the nozzle create a strong cooling effect through adiabatic expansion. This effect is greater than the heat generated by pulverization. Therefore, the process operates...