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precleaning

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Published: 01 August 2018
Fig. 8 Operations (in addition to precleaning) for the postemulsifiable, method B, lipophilic liquid penetrant system More
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Published: 01 August 2018
Fig. 9 Operations (in addition to precleaning) for the postemulsifiable, method D, hydrophilic liquid penetrant system More
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Published: 01 August 2018
Fig. 10 Operations (in addition to precleaning) for the solvent-removable liquid penetrant system More
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006440
EISBN: 978-1-62708-190-0
... penetrant inspection as well as materials used. It discusses some of the more generally used types of equipment used in penetrant inspection and their requirements. The article describes various penetrant methods and their selection criteria and provides information on precleaning and postcleaning...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002170
EISBN: 978-1-62708-188-7
...Abstract Abstract This article discusses the principal process steps, specifications, defects, applications, advantages, and disadvantages of chemical milling (CM) in aerospace industries. The process steps include precleaning, masking, scribing, etching, final cleaning, stripping...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001346
EISBN: 978-1-62708-173-3
...-base fluxes, organic fluxes, inorganic fluxes, and synthetically activated fluxes, are reviewed. The article describes the joint design and precleaning and surface preparation for soldering. It addresses some general considerations in the soldering of electronic devices. Soldering process parameters...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003231
EISBN: 978-1-62708-199-3
... penetrants are used. Normally, the same type of solvent is used both for precleaning and for removal of excess penetrant. This penetrant process is convenient and broadens the range of applications of penetrant inspection. The solvent-removable penetrants have an oil base. Optimum solvent removal...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003211
EISBN: 978-1-62708-199-3
... and solder. fluxing precleaning solder alloys soldered joints soldering surface preparation SOLDERING involves heating a joint to a suitable temperature and using a filler metal (solder) that melts below 450 °C (840 °F). The solder is distributed between the closely fitted surfaces...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006061
EISBN: 978-1-62708-172-6
... and rigging, $0.20/ft 2 for precleaning, $0.80/ft 2 for surface preparation, $0.30/ft 2 for prime coat, $0.28/ft 2 for each subsequent coat, etc.). Again, the accuracy of this approach depends on the source of the unit price data. If a contractor keeps accurate job cost records for well-defined units...
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
...-dip coatings. Wet Chemical Precleaning Wet chemical precleaning and strip heating in a hydrogen-nitrogen atmosphere has certain advantages. The mechanical properties of the final product can be predetermined before coating, and then a low-temperature cycle can be used during coating to preserve...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001229
EISBN: 978-1-62708-170-2
... practices. acid pickling batch pickling continuous pickling descaling electrolytic pickling hydrochloric acid inhibitors pickling pickling defects pickling equipment precleaning safety practices scale removal spent pickle liquor disposal steel sulfuric acid OXIDE SCALE must...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005775
EISBN: 978-1-62708-165-8
... The precleaned steel parts to be pack aluminized are placed in a retort, or reactor vessel, with the pack mixture. Using ammonium halide (NH 4 X , where X is fluorine, chlorine, bromine, or iodine) as the activator, a sequence of high-temperature reactions occurs when aluminum is deposited on the surfaces...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005345
EISBN: 978-1-62708-187-0
... require more stringent guidelines concerning proper precleaning, and sufficient gas shielding, than is required for ferrous castings. A more thorough understanding of the base material physical properties, welding metallurgy, and processing limitations of the nonferrous alloys also may be needed. Weld...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001224
EISBN: 978-1-62708-170-2
.... Emulsifiable solvent detergents are particularly well suited to the removal of such heavy soils as carbonized grease and oil deposits, and buffing and lapping compound residues. Where parts are very heavily soiled, solvent detergents are frequently used as precleaners before the work is put through the regular...
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
... are most widely used for inprocess cleaning, preparation for phosphating, and precleaning for subsequent alkaline cleaning before plating ( Table 2 ). Vapor Degreasing Vapor degreasing is an effective and widely used method for removing a wide variety of oils and greases. It develops a reproducible...
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
... for phosphating and precleaning before alkaline cleaning Water- or water-solvent-based solutions Emulsions of hydrocarbon solvents such as kerosene and water with emulsifiable surfactant Pigmented drawing compounds Unpigmented oil and grease Cutting fluids and chips Faster but less...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001430
EISBN: 978-1-62708-173-3
... is possible in zirconium welds, it can usually be minimized by properly adjusting welding parameters and by following sound welding practices with respect to precleaning and proper shielding during the welding process. Additional information is available in the article “Welding of Zirconium Alloys...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001261
EISBN: 978-1-62708-170-2
... typically involves precleaning, electrocleaning, and electroetching; some base materials also require desmutting, activation, and preplate operations. Parts with heavy corrosion, lubricants, oil, and so on ordinarily require more aggressive cleaning, such as vapor/solvent degreasing or grit blasting, prior...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001315
EISBN: 978-1-62708-170-2
... that the initial removal of the buffing compound and other soils in a precleaning operation be done as soon as possible after polishing and buffing. Most buffing compounds become substantially more difficult to remove after aging several days ( Ref 5 ). Solvent Cleaning Following the mechanical finishing...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001227
EISBN: 978-1-62708-170-2
... when used anodically. Sulfuric acid baths are most commonly electrolyzed ( Table 1 ) and are usually used as a final cleaner before plating. All grease and oil should be removed before electrolytic cleaning, to reduce contaminating of the electrolytic bath. If alkaline cleaners are used as precleaners...