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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005275
EISBN: 978-1-62708-187-0
...Abstract Abstract Thixomolding is a method of molding thixotropic semisolid magnesium alloy pellets in a machine that resembles an injection molding machine in physical appearance and operation. This article describes the process of thixomolding. The use of hot sprues and hot runners...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003370
EISBN: 978-1-62708-195-5
... SMC paste thickening curve Fig. 6 The tortuous path of injection molding compounds Fig. 1 Sheet molding compound processing machine Fig. 7 Injection molding compound screws Abstract Abstract Molding compounds are plastic materials in varying stages of pellets...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001053
EISBN: 978-1-62708-161-0
... that they be pelletized. To facilitate this, the large portions of the wastes must be separated on screens and then ground to a suitable size. Equipment such as a rod mill, a rotating cylinder in which steel rods tumble to grind the material, is commonly used for this step. The fine material is then mixed with a reducing...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003008
EISBN: 978-1-62708-200-6
... and copolymers in which the major monomeric constituents belong to two families of ester-acrylates and methacrylates. These are used singly or in combination. Hard, clear acrylic sheet is made from methyl methacrylate, whereas molding and extrusion pellets are made from methyl methacrylate copolymerized...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001317
EISBN: 978-1-62708-170-2
...Industrial processes and relevant catalysts Table 1 Industrial processes and relevant catalysts Application Reaction Active catalytic component Chemicals Steam reforming (H 2 production) CH 4 + H 2 O → 3H 2 + CO Ni/Al 2 O 3 (pellet) Methanol synthesis 2H 2 + CO → CH...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003790
EISBN: 978-1-62708-177-1
.... Samples prepared by polishing to a 1 μm finish on a diamond then wheel etched with acetic picral. Courtesy of CANMET Fig. 25 The initial microstructures of pelletized AZ91D magnesium feedstock. (a) General view of chipped feedstock. (b) Heavy plastic deformation within a chip. (c) Minor...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006122
EISBN: 978-1-62708-175-7
... of the column. Fractionating the crude carbonyl is easily achieved because the boiling points of nickel and iron carbonyls are 43 °C and 102.8 °C (109 °F and 216 °F), respectively. The nickel carbonyl gas is transferred to the pellet or powder decomposer towers (10 m, or 33 ft, high by 2 m, or 6.5 ft, diameter...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006580
EISBN: 978-1-62708-290-7
... pelletized material is moved through the hole by a worm gear mechanism ( Fig. 2 ). Fig. 1 Ram extruder. Source: Ref 2 Fig. 2 Helical extrusion. Source: Ref 3 There are hot extrusion processes, cold extrusion processes, and chemical-based processes, each enabling a broad range...
Book Chapter

By John C. Bittence
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003222
EISBN: 978-1-62708-199-3
.... Waste materials are pelletized for recycling. In this process, the large portions of the wastes are separated on screens and ground to size. A rod mill, a rotating cylinder in which steel rods tumble to grind the material, is commonly used for this step. The fine material is mixed with a reducing agent...
Book Chapter

By John C. Bittence
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003222
EISBN: 978-1-62708-199-3
..., including zinc, lead, and cadmium. These materials are difficult to recycle because they are finely divided and often oxidized. They might be contaminated with a variety of other materials, including slag and grinding abrasives. Waste materials are pelletized for recycling. In this process, the large...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006124
EISBN: 978-1-62708-175-7
... Tantalum and Tantalum Alloys Niobium and Niobium Alloys Rhenium Pressing Sintering Pressing Sintering Pressing Sintering Technically Pure Tungsten Tungsten Alloys Technically Pure Molybdenum Molybdenum Alloys Manufacturing of tantalum pellets for capacitors begins...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006672
EISBN: 978-1-62708-213-6
... representing a molding resin pellet that had produced brittle parts. The thermogram shows a major melting transition associated with nylon 6/12 and a weaker transition attributed to polypropylene. Source: Ref 6 Fig. 9 Differential scanning calorimetry thermogram representing a molding resin pellet...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002491
EISBN: 978-1-62708-194-8
... conversion process. The material that enters the process as plastic pellets or powder is basically the same material that exits the process as a plastic part. The plastic process converts the shape of the plastic material. However, this simple explanation of plastic processing needs to be slightly modified...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005745
EISBN: 978-1-62708-171-9
... zinc. These rolls are used for aluminizing or galvanizing the sheet steel. These applications have been discussed in the article “Thermal Spray Applications in the Steel Industry” in this Volume. A variety of cutting edges is used for slitting, chopping, pelletizing, and grinding fibers...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003018
EISBN: 978-1-62708-200-6
... product. There are three kinds of dedicated thermoformers. Assigned Systems In-Line Extrusion Thermoformers Complete Pellet-to-Product Thermoformers These machines, although slow, are versatile. Because they can be set up to simulate the operation of many other machine types, single-station...
Book Chapter

By Ted Kostilnik
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001235
EISBN: 978-1-62708-170-2
... at which the desired coverage is obtained. With an increase in shot velocity, the rate of shot breakdown increases far more rapidly than the intensity of the peening blast; however, the weight of a shot pellet varies directly, while the number of pellets per kilogram (pound) of shot varies inversely...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005711
EISBN: 978-1-62708-171-9
...) uses a small pellet of hydrogen fuel that is compressed and heated evenly on all sides by high-energy beams of laser light, electrons, or ions. An excellent review of thermal spray applications in nuclear fusion research is given in Ref 2 . In MCF reactors, components operate under the extreme...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005272
EISBN: 978-1-62708-187-0
... processing methods are given in other sections and articles in this Volume. Thixocasting (Billet Feedstock) Rheocasting (Slurry) Thixomolding (Magnesium Pellets) Because the slurry is approximately 50% solid when cast, much of the sensible heat and heat of fusion has already been released before...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003015
EISBN: 978-1-62708-200-6
...- or twin-screw extruder to melt plastic pellets or powder and force the resulting melt through a die. The extruded shape comes out of the die at a continuous rate and is then cooled. This process is called continuous extrusion. The extruder is actually a screw conveyer, which carries the cold plastic...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003471
EISBN: 978-1-62708-195-5
... kiln combustion ( Ref 13 ) RIM Energy recovery, solid and gaseous wastes Incineration ( Ref 11 , 15 ) ASR “pellets,” mixed polymer waste, fuel supplement Energy recovery, solid and gaseous wastes Incineration in pure O 2 ( Ref 11 ) Auto battery plastics scrap, ASR Energy recovery, solid...