1-20 of 21 Search Results for

wet lay-up

Sort by
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006935
EISBN: 978-1-62708-395-9
... as one surface is still reacting and shrinking after the other has solidified. Such effects can occur with most of the thermoset processes, but most easily with hand lay-up. Shrinkage in thermosets is reduced by adding fillers, by adding a thermoplastic resin to absorb the monomer and expand during...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
... the oxide layer firstly formed, B 2 O 3 , is liquid and tends to evaporate to BO (G), BO 2 (G), and B 2 O 3 (G) as temperature increases. Under reducing conditions, pure BN may be usable up to 1800 °C (3270 °F). The most valuable characteristic of BN is its resistance to wetting by metals and alloys...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
... molding, compression molding, transfer molding, hand lay-up process, casting, and additive manufacturing. compounding operations dies extruder extrusion molding injection molding mixing molds process troubleshooting product design screw extruder thermoforming webline handling Extrusion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001680
EISBN: 978-1-62708-221-1
..., and filler wire describe particular wire arrangements used in strand constructions. The wires within the strand are wound in a helix. If the helix of the wires is opposite the helix of the strand in the rope, it is referred to as regular lay. If the helix is in the same direction, this produces a lang lay...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
..., composition of fuel, amount of excess combustion air, type and amount of water-conditioning chemicals added, type and amount of contaminants in condensate and make-up feedwater, frequency and methods of cleaning fire-side and water-side surfaces of steam generators, materials specified as to alloy...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... is completed and put into operation. Under such circumstances, the heat exchangers should be adequately protected from the corrosion that might occur before start-up. Wet lay-up using a suitably buffered or inhibited solution can be used to retard corrosion. Another method is to keep the heat exchanger dry...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006825
EISBN: 978-1-62708-329-4
...-diameter tubing (such as the water-wall, superheater, reheater, and economizer tubes) making up the heat-transfer surfaces. This article discusses the main types of failure that occur in steam-power-plant equipment, with major emphasis on the distinctive features of each type that enable the failure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003556
EISBN: 978-1-62708-180-1
... , receives the electrons given up by the oxidation process. The driving force for corrosion is the free energy released by the overall chemical reaction resulting from combined cathodic and anodic half-reactions: (Eq 1) Anodic reaction M → M n + + n   electrons Cathodic...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001809
EISBN: 978-1-62708-180-1
... with a low contact pressure, p , and at a low speed, V. A recommended pV limit is 0.2 MPa · m/s ( Ref 1 ). Another is to lay a thin film of polymer on a metal backing to increase the heat-flow rate. A third is to fill the polymer with a material that has high thermal conductivity. The third solution...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006925
EISBN: 978-1-62708-395-9
... AN ENGINEERING PLASTIC is defined as a synthetic polymer with mechanical properties that enable its use in the form of a load-bearing shape. Polymers, which constitute the major portion of an engineering plastic, are made up of extremely large molecules formed from polymerization of different monomers...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
... or nonreactive gases, such as helium or nitrogen, in order to avoid unacceptable corrosion. Wet lay-up using deoxygenated water or the continuous circulation of demineralized deoxygenated water can also be used to minimize corrosion. Recordkeeping during such periods is as important as record-keeping during...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006813
EISBN: 978-1-62708-329-4
... into operation. Under such circumstances, heat exchangers should be adequately protected from the corrosion that may occur before startup. Wet lay-up using a suitably buffered or inhibited solution can be used to retard corrosion. Another method is to keep the heat exchanger dry and, if necessary, fill...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006812
EISBN: 978-1-62708-329-4
... of circumstances. Intermittent operation can also affect the life of pressure vessels. Long periods of inactivity greatly enhance the probability of internal or external corrosion. During long shutdown periods, a common effective practice is to pressurize the system with nitrogen, to avoid corrosion. Wet lay...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
..., 2.7% Mo, 1.7% Ti). The cracks were found at the base of multiple outer posts (fir trees), which retain the turbine blades ( Fig. 3a ). The cracks ran parallel to the serrations and penetrated up to ~6.4 mm (¼ in.) into the disc posts. Fig. 3 Cracked fifth-stage turbine disc fir tree...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.9781627083959
EISBN: 978-1-62708-395-9
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006923
EISBN: 978-1-62708-395-9
...-formaldehyde (PF) 163 325 150 300 0.25 0.14 16 Unsaturated polyester (UP) 279 535 130 265 0.12 0.07 16 Modified polyphenylene oxide alloy (PPO mod) 100 212 80 175 … … 38 Polyphenylene sulfide (PPS) 260 500 200 390 0.17 30 Polysulfone (PSU) 174 345 140 285 0.26 0.15...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... 617 (N06617) filler alloy. Wet charcoal containing up to 0.57% S and 2.04% Cl is fed in at one end of the kiln and travels while being tumbled within the inclined rotating vessel. Temperatures range from 480 °C (900 °F) (zone 1) to 900 °C (1650 °F) (zones 2 and 3). Steam is introduced at the discharge...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
... the evidence and formulate conclusions. This requires writing a report with follow-up recommendations on preventing future failures. The goal of every failure analyst is to determine not only the failure mechanism but also the root cause, which may be related to misuse, poor maintenance practices, or improper...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... are more protective at higher temperatures ( Ref 6 ). Chromium oxide is stable up to 983 °C (1800 °F), above which the oxide volatizes to gaseous CrO 3 . The temperatures listed in Table 1 may require modification, depending on the severity of the oxidation rate as influenced by the actual...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... occurs. If the tilt is not great enough to take up all the clearance, there will be no ball path on the upper (nonloaded) half of the outer raceway. Figure 2(d) shows a bearing whose inner ring was tilted or out of square with respect to the axis of rotation. Again, the amount of tilt...