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mechanical cleaning

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Published: 01 April 2004
Fig. 3.22 Effect on joint strength of deliberate delay, in a high-vacuum environment, between mechanical cleaning and assembly for high-lead solder (Pb-3Sn) flip-chip bonds More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430351
EISBN: 978-1-62708-253-2
.... Therefore, scale removal is mandatory in order to ensure efficient heat transfer across the tube walls and for overall protection of the boiler per original equipment manufacturer guidelines. The basic steps in cleaning a boiler for scale removal consist of mechanical cleaning, water flushing, alkaline...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280203
EISBN: 978-1-62708-267-9
... by about 50%. Careful consideration needs to be given to the mechanical aspects of contamination removal. Chemical removal means are no less of a concern, because some contaminants interact with cleaning chemicals to produce intergranular attack. This type of attack creates not only an undesirable...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110603
EISBN: 978-1-62708-247-1
... inspection followed by material evaluation and characterization. These processes are typically followed by evaluation of the packages to identify defects, degradations, and failure mechanisms that are caused by the processes (e.g., cleaning, solder dipping of leads, reballing) used in creating counterfeit...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280149
EISBN: 978-1-62708-267-9
...-(aluminum + titanium) content alloys. The procedures used in welding superalloys depend, to some extent, on the mechanism by which they are strengthened for high-temperature service, that is, whether primarily solid-solution strengthening or primarily precipitation strengthening is employed. Concepts...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t62440103
EISBN: 978-1-62708-352-2
..., in a high-vacuum environment, between mechanical cleaning and assembly for high-lead solder (Pb-3Sn) flip-chip bonds Fig. 3.21 Effect of fast atom cleaning on the strength of high melting point Pb-3Sn solder joints made without breaking vacuum between cleaning and soldering. Adapted from: Kohono...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t62440001
EISBN: 978-1-62708-352-2
... 36Al-37Mg 450 842 Volatile, brittle 75Pb-25Pd 454 849 Poor fatigue resistance, brittle 56Ag-44Sb 485 905 Volatile, brittle 58Au-42In 495 923 High cost, brittle 68Al-27Cu-5Si 524 975 Difficult to clean, brittle 23Ag-53Cd-24Cu 525 977 Toxic fumes, volatile, brittle...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t51230105
EISBN: 978-1-62708-351-5
... then wets and spreads over the clean substrate surface. Fig. 3.11 Tensile strength and area of spread data for alloys of Cu-8Ni-4Sn-xP (6 ≤ x ≤ 8.5) on copper substrates, heated to 700 °C (1290 °F) for 10 min. Braze spreading and joint mechanical properties have opposing tendencies as a function...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.9781627083522
EISBN: 978-1-62708-352-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050293
EISBN: 978-1-62708-311-9
... supplies). Most maintenance for induction heat-treating systems is centered on the cooling water systems, the high-frequency electrical output connections from the heat station, the induction coil, any mechanical fixturing, and the quench system, because the power supplies and heat stations have very few...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780141
EISBN: 978-1-62708-268-6
... of mechanical interference, preventing hydraulic actuators from working, valves from fully closing, or many other types of failures due to inhibited motion. Contaminants can degrade bond joints and welds. Contaminants can interfere with switches closing properly. Contaminants can degrade energetic...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740325
EISBN: 978-1-62708-308-9
.... Understanding the mechanics of the cleaning action for particular processes can help guide the selection of an appropriate method. Solvent Cleaning Solvent cleaning, as the name implies, is the dissolution of contaminants by an organic solvent. Typical solvents include trichloroethylene, methylene...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900089
EISBN: 978-1-62708-350-8
... around 200 °C (400 °F) Why is plasma started at those temperatures? The cold-wall furnace uses a constant dc system, which requires plasma voltages around 600 to 800 V. Mechanical and metallurgical damage to the workpiece surface may occur by processing so close to the arc discharge region. The hot...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310233
EISBN: 978-1-62708-286-0
... for products related to food, health care, and laundry because it combines strength and durability with an unexcelled ability to be cleaned, disinfected, and sterilized. These qualities have long been apparent to commercial food, laundry, and health care professionals and have increasingly carried over...
Image
Published: 01 August 2005
Fig. 3.10 Wetting mechanism of self-fluxing filler metals. (a) Self-fluxing filler applied to copper component. (b) Filler and its oxide melt and wet the oxide film on the component surface. (c) Oxide film on the component dissolves in the molten braze to form a slag that floats to the free More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120085
EISBN: 978-1-62708-269-3
... Abstract Cleaning procedures serve to remove scale, tarnish films, and other contaminants that form or are otherwise deposited on the surface of titanium during processing operations such as hot working and heat treatment. This chapter explains what makes titanium susceptible to the formation...
Image
Published: 01 April 2004
Fig. 5.18 Wetting behavior of mild steel by lead-tin eutectic solder, measured on a wetting balance at 235 °C (455 °F). (a) As-received condition. Wetting occurs slowly and at an inconsistent rate. (b) Following mechanical abrasion of the coupon surfaces immediately prior to testing. Wetting More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310193
EISBN: 978-1-62708-286-0
... Abstract This chapter discusses the functions of surface treatments important for stainless steel, namely the removal of oxide scale and cleaning, brightening, and coloring of the stainless surface. Details on the main methods of producing aesthetic surface finishes are also provided...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110402
EISBN: 978-1-62708-247-1
... contamination. Isopropyl alcohol is often effective at removing tape and paint residues while solvents such as acetone are often used to remove certain types of wax from the back of samples after cross-sectional mechanical polishing. Plasma cleaning using oxygen (ashing) and/or argon can also be used...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290165
EISBN: 978-1-62708-306-5
... conditions, storage and handling practices, and other factors. Cleaning operations are commonly categorized as being either chemical or mechanical. Chemical cleaning is the most effective means of removing all traces of oil or grease. Trichloroethylene and trisodium phosphate are the usual cleaning agents...