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water drop impingement

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Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006796
EISBN: 978-1-62708-295-2
... direction change, such as an elbow, downstream of a valve and orifice, or at a T-junction. Moreover, even if the flow is a single-phase water flow, droplet impingement may occur downstream of the valve or orifice due to flashing when the local pressure is lower than the vapor pressure. Erosion-rate...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003568
EISBN: 978-1-62708-180-1
.... These include cavitation erosion, liquid impingement erosion, and solid particle erosion. Cavitation erosion is due to the formation and collapse, within a liquid, of cavities or bubbles that contain vapor or gas or both. Liquid impingement erosion is due to impacts by liquid drops or jets. Solid impingement...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001043
EISBN: 978-1-62708-214-3
... in.) type 304 stainless steel tube that was used as a heat shield and water nozzle support in a hydrogen gas plant quench pot failed in a brittle manner. Visual examination of a sample from the failed tube showed that one lip of the section was eroded from service failure, whereas the opposite side...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006795
EISBN: 978-1-62708-295-2
... erosion. Cavitation erosion is due to the formation and collapse, within a liquid, of cavities or bubbles that contain vapor or gas or both. Liquid impingement erosion is due to impacts by liquid drops or jets. Solid impingement erosion is due to impacts by solid particles. Impingement also connotes...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001087
EISBN: 978-1-62708-214-3
... to the reagent slurry tank (recirculation test) the discharge pressure dropped, as was expected because of the elimination of vertical head to the discharge point, and the slurry flow rate rose to five times the design value. Hardness was determined using a Shore A durometer. The hardness of each component...
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
... and flowed in accordance with cooling demand. Under these circumstances, deposits would form on, or particles would drop on, the inner surfaces of the horizontal tubes. Conclusions The tubing failed by crevice corrosion. Particles of dirt in the river water were deposited inside the tubes during...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003569
EISBN: 978-1-62708-180-1
... apparatus. ASTM Standard G 73 ASTM Standard G 73 provides guidelines for liquid drop impingement testing that, in addition to evaluating the resistance of metals, can be used to evaluate the degradation of optical properties of window materials and the destruction of coatings by the impinging liquid...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
...-impact erosion is caused by continued impingement of liquid droplets, usually water moving at high relative velocities (>50 m/s, or >164 ft/s). Because water droplets cannot move at high velocities without breaking up, the practical problem of liquid-droplet erosion arises when a solid body moves...
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
... be expected in corrosion of a copper alloy exposed to aerated natural water. Flow of cooling water from the river through the tubes was not uniform but ebbed and flowed in accordance with cooling demand. Under these circumstances deposits would form on, or particles would drop on, the inner surfaces...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001635
EISBN: 978-1-62708-221-1
.... There were two modes of failure of the wire: tensile and corrosion related. The predominant corrosion mechanism appeared to be crevice corrosion related, with the corrosion being driven by the retention of water by the cover material around the wire strands. In this case study (and in most wire-reinforced...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001143
EISBN: 978-1-62708-229-7
... concentrated as the water evaporates under the influence of the dry region. The damage caused by the long term bombardment of liquid droplets does not typically proceed at a uniform rate even if the liquid impingement is uniform with time [ 17 ]. There is an initial phase during which there is usually some...
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
... flows before the condensate has time to evaporate. The second cause of rapid failure is tube leaks. In a water-wall tube, an undetected tube leak low in the furnace will starve that tube. Higher in the furnace, reduced fluid flow allows DNB to occur at normal firing conditions. Last is flame impingement...
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
... or hot water. Power boilers using pulverized coal, fuel oil, or natural gas as the fuel are used in thermal power plants to produce steam for generation of electricity. They are very large in size and are operated at high pressure and temperature in order to produce high-pressure, high-temperature...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
... in low-velocity or poorly aerated water and at shielded areas may become active and exhibit a potential near −0.5 V. Adapted from Ref 2 Although the measurement of potentials has limitations as previously noted, galvanic series based on seawater or other standard electrolytes are worthwhile...
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
... two surfaces is related to the wettability of the liquid (lubricant) on the surface of interest. If a drop of the lubricant spreads out completely and spontaneously on the surface, that lubricant will also run out of the bearing completely. If the drop of lubricant stands up as water does on a waxed...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... by a black rectangle were tested in low-velocity or poorly aerated water and at shielded areas may become active and exhibit a potential near −0.5 V. SCE, saturated calomel electrode. Adapted from Ref 2 Although the measurement of potentials has limitations as previously noted, galvanic series based...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001149
EISBN: 978-1-62708-232-7
... increased, the temperature differences and thermal bending also increased. Because of the thermal bending, saddle support holddown bolts began breaking in February. The nonuniform temperatures were caused by several factors including flue gas impingement, weather conditions, nonuniform heat convection from...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006794
EISBN: 978-1-62708-295-2
... conditions ( Fig. 1a ), automobile brakes subject to wet conditions or in relatively aggressive environments such as saline water due to deicing salts and dirt ( Fig. 1b ), and ore chutes in mineral-processing plants, where moist ore particles slide on an inclined platform and chute. Note that the example...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006804
EISBN: 978-1-62708-329-4
... and point of origin. The temperature or blast pressure level can be mapped in both cases. The magnitude of a blast will usually be expressed in a spherical or circular map, whereas heat and fire damage zones are subject to flame impingement direction, wind direction, shadowing, insulation, and other cooling...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
... agitation causes temperature gradients within workload and part May not be uniform Rolling on surface is poor guide to agitation Must be measured or modeled Type of quenchant Brine, water, oil, polymer, gas, air Quench rate must be fast enough to achieve desired properties...