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alkaline cleaning

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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
... for removing metal contamination. A typical procedure for chemically removing iron, zinc, and thin films of lead is to first perform vapor degreasing or alkaline cleaning, and then immerse the parts in a 1 to 1 solution (by volume) of nitric acid (1.41 specific gravity, or sp gr) and water for 15 to 30 min...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290243
EISBN: 978-1-62708-306-5
... preparation is absolutely essential to producing a strong, durable bond . For field repair applications, it can be extremely difficult to execute proper surface preparation. For original manufacturing, adhesive bonding requires clean rooms with temperature and humidity control. Adhesively bonded joints can...
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
... on the degree of cleanliness required and subsequent operations to be performed. Abrasive blasting produces the lowest degree of cleanliness. Solvent, solvent vapor degrease, emulsion soak, alkaline soak, alkaline electroclean, alkaline plus acid cleaning, and finally ultrasonics each progressively produces...
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
... 0.8 30 10% (a) 38 100 400 16.0 30 0.25% (a) 95 205 76 3.0 10 2% (b) Boiling point Boiling point 125 5.0 17 7–8% (b) 60 140 125 5.0 A nitric-hydrofluoric acid solution, which is the final stage brightening in most alloy cleaning lines, should be maintained...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870235
EISBN: 978-1-62708-314-0
... honing, alkaline cleaning, and acid etching results in a complex chemically activated surface topography, increasing the surface area that the adhesive can penetrate and adhere to. The adhesive bond strength is a result of both mechanical interlocking and chemical bonding. Other methods, such as dry...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870191
EISBN: 978-1-62708-299-0
... Molten deposits Condensation and dewpoint Control Surface cleaning and preparation Coatings Cathodic protection Inhibitors Inspection Planned maintenance Source: Ref 1 Specified requirements for alclad products Table 4 Specified requirements for alclad products...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870045
EISBN: 978-1-62708-299-0
... discontinuities in the oxide film on aluminum exposed to atmosphere, fresh or salt water, or other neutral electrolytes. Since, in highly acidic or alkaline solutions, the oxide film is usually unstable, pitting occurs only in a pH range of about 4.5 to 9.0. The pits can be minute and concentrated, or they can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230441
EISBN: 978-1-62708-298-3
... grit. Alkaline clean (using method B). Method E: Degrease with methyl ethyl ketone (MEK), followed with a vapor degrease. Etch for 30 s in a solution of (by weight) 45 parts nitric acid, 7 parts hydrofluoric acid, and 260 parts distilled water maintained at 21 to 27 °C (70 to 80 °F...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910021
EISBN: 978-1-62708-250-1
.... The characteristics include: conductivity of the solution, acidity and alkalinity, oxidizing power, degree of ionization, and solubility in the solution. These characteristics, in combination with the characteristics of the metal, will determine the corrosion behavior of a metal/environment combination. The chapter...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430379
EISBN: 978-1-62708-253-2
...–100 0.05 TSS, ppm 15 8–10 2–3 1 … … Silica, ppm 150 40–90 20–30 8 1 0.02 Total alkalinity, ppm 700 500–600 300 150–200 150 … pH 11–12 11–12 10.5–11 9.5–10.5 9.1–9.6 > 8.5 Fig. 7.1 Schematic expanded view of tube showing phosphate hideout on inner...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910193
EISBN: 978-1-62708-250-1
...Abstract Abstract Corrosive environments can be broadly classified as atmospheric, underground/soil, water, acidic, alkaline, and combinations of these. Complicating matters is the fact that there are important variables, for example, pH, temperature, and the presence of biological organisms...
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
... water or a hydrocarbon solvent Wax and oil polishes minimize fingerprinting. Glass cleaner is appropriate for mirror finishes. Grease, oil Hydrocarbon solvent Alkaline cleaners may also be used in severe cases but may require cleaning the entire surface to maintain visual uniformity. More...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230459
EISBN: 978-1-62708-298-3
... of silicone greases. In the latter case, a solvent for silicone grease must be used prior to the alkaline treatment [ Mueller and Adolphson 1979 ]. Other sources of chlorine ions, in addition to tapwater, can be chlorinated solvents used to remove oils and greases. Plastic piping in the cleaning system...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480265
EISBN: 978-1-62708-318-8
...-preparation steps include: Degreasing, alkaline cleaning, and acid-pickling techniques were discussed previously in the welding section but are reviewed here. Surface-conditioning treatments form a corrosion-resistant film of controlled thickness and composition on the surface to be joined (adhered...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720183
EISBN: 978-1-62708-305-8
... adherent shop soil from large quantities of small parts Chemical Alkaline cleaning Removing braze stopoff, rust, scale, oils, greases, polishing material, and carbon deposits; typically used on large articles where hand methods are too labor intensive; also used on aluminum for gross metal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430351
EISBN: 978-1-62708-253-2
... 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 treatment, solvent cleaning, and neutralization and passivation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400215
EISBN: 978-1-62708-258-7
...% picral Granular bainite (martensite-austenite constituent) 4% picral Martensite, as-quenched 2% nital Martensite, tempered 4% picral + 2% nital Prior austenite grain boundaries Winsteard’s (modified) or boiling alkaline sodium picrate or Marshall’s reagent or saturated aqueous...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350125
EISBN: 978-1-62708-315-7
... Chemical ware ≤100 ≤212 12 Alkaline solutions ≤100 ≤212 1–2 All acids except hydrofluoric 175–230 350–450 1–2 Concentrated sulfuric acid, nitric acid, and hydrochloric acid Home laundry equipment ≤71 ≤160 11 Water; detergents; bleach Range exteriors 21–66 70–150 2–10 Food...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910363
EISBN: 978-1-62708-250-1
... coatings, for example, almost always require blast cleaning, while some alkyd and oil-base coating systems can be applied over rust, mill scale, or a poorly cleaned surface. In addition to being cleaned, the surface must be roughened to provide for a mechanical bond of the paint to the substrate...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850165
EISBN: 978-1-62708-260-0
... added to the boiling alkaline sodium picrate solution, and excellent results were obtained (see Fig. 3-4 ). Figure 3-3 Etching of sheet steel with nital, Marshall’s reagent, and nital produced a stained surface (left) which was removed (right) by ultrasonic cleaning in 3% aqueous EDTA followed...