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Book: Surface Engineering
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001226
EISBN: 978-1-62708-170-2
...Abstract Abstract Ultrasonic cleaning involves the use of high-frequency sound waves that is above the upper range of human heating, or about 18 kHz, to remove a variety of contaminants from parts immersed in aqueous media. This article describes the process, design considerations...
Abstract
Ultrasonic cleaning involves the use of high-frequency sound waves that is above the upper range of human heating, or about 18 kHz, to remove a variety of contaminants from parts immersed in aqueous media. This article describes the process, design considerations and the equipment in ultrasonic cleaning. The components used in the generation of ultrasonic wave include piezoelectric and magnetostrictive transducers that are used in ultrasonic generators and tanks. The effects of solution type and its temperature on the effectiveness of ultrasonic cleaning are also discussed.
Book: Surface Engineering
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001221
EISBN: 978-1-62708-170-2
... and lapping compounds from magnetic particle and fluorescent penetrant inspection. The cleaning processes include emulsion cleaning, electrolytic alkaline cleaning, acid cleaning, solvent cleaning, vapor degreasing, alkaline cleaning, ultrasonic cleaning, and glass bead cleaning. The article provides...
Abstract
This article describes the basic attributes of the most widely used metal surface cleaning processes to remove pigmented drawing compounds, unpigmented oil and grease, chips, cutting fluids, polishing and buffing compounds, rust and scale from steel parts, and residues and lapping compounds from magnetic particle and fluorescent penetrant inspection. The cleaning processes include emulsion cleaning, electrolytic alkaline cleaning, acid cleaning, solvent cleaning, vapor degreasing, alkaline cleaning, ultrasonic cleaning, and glass bead cleaning. The article provides guidelines for choosing an appropriate process for particular applications and discusses eight well-known methods for determining the degree of cleanliness of the work surface.
Book: Surface Engineering
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001305
EISBN: 978-1-62708-170-2
.... This article provides an overview of the various types of stainless steels and describes the commonly used cleaning methods, namely, alkaline cleaning, emulsion cleaning, solvent cleaning, vapor degreasing, ultrasonic cleaning, and acid cleaning. Finishing operations of stainless steels, such as grinding...
Abstract
Passivation; pickling, that is, acid descaling; electropolishing; and mechanical cleaning are important surface treatments for the successful performance of stainless steel used for piping, pressure vessels, tanks, and machined parts in a wide variety of applications. This article provides an overview of the various types of stainless steels and describes the commonly used cleaning methods, namely, alkaline cleaning, emulsion cleaning, solvent cleaning, vapor degreasing, ultrasonic cleaning, and acid cleaning. Finishing operations of stainless steels, such as grinding, polishing, and buffing, are reviewed. The article also explains the procedures of electrocleaning, electropolishing, electroplating, painting, surface blackening, coloring, terne coatings, and thermal spraying. It includes useful information on the surface modification of stainless steels, namely, ion implantation and laser surface processing. Surface hardening techniques, namely, nitriding, carburizing, boriding, and flame hardening, performed to improve the resistance of stainless steel alloys are also reviewed.
Image
Published: 01 December 2004
Fig. 7 Comparison of a yttria-stabilized zirconia microstructure in the as-polished (left) and ultrasonically cleaned (right) condition. The porosity increased by 450% after 16 min of ultrasonic cleaning. Due to the high density of the coating, the epoxy did not infiltrate the majority of pores
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Book: Fractography
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001832
EISBN: 978-1-62708-181-8
... for screening as fracture surface coating materials. These inhibitor compounds were applied to fresh steel fracture surfaces and exposed to 100% relative humidity at 38 °C (100 °F) for 14 days. The coatings were removed by ultrasonic cleaning with the appropriate solvent, and the fracture surfaces were visually...
Abstract
Fracture surfaces are fragile and subject to mechanical and environmental damage that can destroy microstructural features. This article discusses the importance of care and handling of fractures and the factors that need to be considered during the preliminary visual examination. It describes the procedures for sectioning a fracture and opening secondary cracks as well as the effect of nondestructive inspection on subsequent evaluation. The article provides information on the most common techniques for cleaning fracture surfaces. These techniques are dry air blast cleaning, replica stripping, organic-solvent cleaning, water-base detergent cleaning, cathodic cleaning, and chemical-etch cleaning.
Image
Published: 01 June 2012
Fig. 35 SEM image of fatigue striations in a Nitinol stent that fractured from ultrasonic cleaning-induced fatigue
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Image
Published: 01 June 2012
Fig. 14 SEM image of fatigue striations in a 316L stainless steel stent that fractured by ultrasonic cleaning-induced fatigue
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Image
Published: 01 June 2012
Fig. 27 SEM image of cleavage-like fatigue morphology in a 316L stainless steel stent that fractured from ultrasonic cleaning-induced fatigue
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Image
in Failure Analysis of Medical Devices
> Analysis and Prevention of Component and Equipment Failures
Published: 30 August 2021
Fig. 24 Scanning electron microscopy micrographs showing (a) nitinol stent strut cracking and (b) fatigue fracture surface after prolonged ultrasonic cleaning
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Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003213
EISBN: 978-1-62708-199-3
.... The article describes common cleaning processes, including alkaline, electrolytic, solvent, emulsion, molten salt bath, ultrasonic and acid cleaning as well as pickling and abrasive blasting. It also explains how to select the appropriate process for a given soil type and surface composition. abrasive...
Abstract
Metal surfaces must often be cleaned before subsequent operations to remove unwanted substances such as pigmented drawing compounds, unpigmented oil and grease, chips and cutting fluids, polishing and buffing compounds, rust and scale, and miscellaneous contaminants. The article describes common cleaning processes, including alkaline, electrolytic, solvent, emulsion, molten salt bath, ultrasonic and acid cleaning as well as pickling and abrasive blasting. It also explains how to select the appropriate process for a given soil type and surface composition.
Image
Published: 01 June 2012
Fig. 7 Scanning electron microscopy images of cracks in laser-cut stents. The stainless steel stent in (a) has a fatigue crack that occurred during ultrasonic cleaning after laser cutting. The fracture in the Nitinol stent in (b) initiated in brittle, heat-affected material that was not removed
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Image
Published: 01 January 1996
Book: Surface Engineering
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001269
EISBN: 978-1-62708-170-2
...-atmosphere techniques, such as Sendzimir oxidation/reduction method; other specialized methods, namely, fluxes, mechanical cleaning, and ultrasonic methods; or a combination of these. alkaline cleaning chemical pickling contaminant removal continuously applied coatings electrolytic cleaning...
Abstract
This article focuses on the various techniques for removing contaminants in the surface preparation of steel for hot-dip coatings: wet cleaning methods, including alkaline cleaning, electrolytic cleaning, chemical pickling, and electrolytic pickling; flame cleaning and furnace-atmosphere techniques, such as Sendzimir oxidation/reduction method; other specialized methods, namely, fluxes, mechanical cleaning, and ultrasonic methods; or a combination of these.
Image
Published: 01 December 2004
to the high void content that entrapped polishing particles, which are carried to the next step. In some cases, even the use of ultrasonic cleaning cannot remove all of the entrapped polishing particles from the previous step.
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Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005777
EISBN: 978-1-62708-165-8
... Drying Waste soil disposal In the cleaning step, the soils are removed from the steel surface by one or a combination of three basic actions: mechanical, thermal, and chemical. Mechanical actions include abrasive surface blasting, spray jet cleaning, use of ultrasonic to loosen the dirts, hand...
Abstract
This article provides an overview of surface contaminants that may affect the heat treatment processes and end-product quality. It presents information on the chemicals used to clean different surface contaminants of steels. The article discusses three types of cleaning methods, namely, mechanical, chemical, and electrochemical and their effectiveness and applicability. The mechanical cleaning methods include grinding, brushing, steam or flame jet cleaning, abrasive blasting, and tumbling. Solvent cleaning, emulsion cleaning, alkaline cleaning, acid cleaning, pickling, and descaling are chemical cleaning methods. The electrochemical cleaning methods include electropolishing, electrolytic alkaline cleaning, and electrolytic pickling. The article provides information on cleanliness measurement methods such as qualitative tests and quantitative tests to ensure product quality. Health hazards that may be associated with each cleaning method and the general control measures to be used for each hazard are tabulated.
Book Chapter
Book: Fractography
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000631
EISBN: 978-1-62708-181-8
... the atomic oxygen environment exposure effect, solar cell interconnect, integrated circuit defects, and fatigue failure of these materials. electronic materials fatigue failure fractograph integrated circuits ultrasonic cleaning Fig. 1326, 1327 Effect of exposure to the atomic oxygen...
Abstract
This article is an atlas of fractographs that helps in understanding the causes and mechanisms of fracture of electronic materials, including L-shaped electronic flat pack, transistor base lead, ohmic contact window, and brush/slip ring assembly. The fractographs illustrate the atomic oxygen environment exposure effect, solar cell interconnect, integrated circuit defects, and fatigue failure of these materials.
Book: Surface Engineering
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001324
EISBN: 978-1-62708-170-2
... does not cause the adverse environmental and health effects associated with VOC and ODC waste. Aqueous Systems Aqueous degreasing can be accomplished by hot tank or dip tank systems. Ultrasonic cleaning and spray cleaning are system options. Hot Tank Systems Heated, aqueous degreasing...
Abstract
The chemicals that have been used in traditional vapor degreasing have serious health and environmental hazards that have prompted the search for modified and alternative techniques. This article provides a detailed discussion on the regulatory mandates that affect the use of industrial degreasing methods. It describes the aqueous degreasing technique, which forms an attractive alternative to the traditional vapor degreasing process. The article includes information on the materials and equipment used in the process, and discusses the advantages and disadvantages of hot and dip tank systems of aqueous degreasing. It explains how to convert an existing vapor degreaser to an aqueous cleaning system.
Book: Thermal Spray Technology
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005715
EISBN: 978-1-62708-171-9
... will result in bleed out of the substrate onto the surface during the coating process. Poor adhesion or delamination will result. Thermal cleaning is a potential solution to prepare such a component for coating. Ultrasonic Cleaning Ultrasonic cleaning can be used to dislodge some contaminants...
Abstract
Thermal spray coating involves certain precoating operations, such as cleaning, surface preparation, and masking, that are critical to the overall quality of the coating system. In addition to these, certain other elements are considered prior to the coating, namely, customer requirements, coating function, part geometry, substrate metallurgy, structure, and thermal history. This article provides a detailed account of the various processes of surface preparation, namely, cleaning, roughening, dry abrasive grit blasting, and machining and macro roughening processes. It outlines the masking and fixturing techniques and stripping of coatings.
Book Chapter
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005355
EISBN: 978-1-62708-187-0
... penetrant inspection, pressure testing, radiographic inspection, magnetic particle inspection, and ultrasonic inspection. castings blast cleaning cleaning finishing flame cutting grinding radiographic inspection inspection liquid penetrant inspection magnetic particle inspection ultrasonic...
Abstract
After solidification and cooling, further processing and finishing of the castings are required. This article describes the general operations of shakeout, grinding, cleaning, and inspection of castings, with particular emphasis on automation technology. It illustrates the vertical core knockout machine and the A-frame core knockout machine and lists the advantages and disadvantages of these machines. The article describes the general factors in automated or manual gate removal process. It concludes with discussion on the various types of inspection, such as the liquid penetrant inspection, pressure testing, radiographic inspection, magnetic particle inspection, and ultrasonic inspection.
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003791
EISBN: 978-1-62708-177-1
... be cleaned in an organic solvent (e.g., an acetone bath) and dried in an oven at 70 °C (160 °F). Ultrasonic cleaning of thermal spray specimens is not recommended, especially for fragile or brittle coatings, because coating particles may be lost during this type of “energetic” cleaning process ( Ref 8...
Abstract
This article reviews how process variations influence the characteristics of thermal spray coatings. It describes various specimen preparation techniques, which allow accurate microstructural analysis. These techniques include sectioning, cleaning, mounting, planar grinding, fine grinding, rough polishing, and etching. The article provides information on the problems associated with specimen preparation. It concludes with a discussion on the various methods of analysis for thermal spray coatings.