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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 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, and mechanical...
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 of...
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
... 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 Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001229
EISBN: 978-1-62708-170-2
.... 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 be completely...
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
.... 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 of the joint by capillary...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003231
EISBN: 978-1-62708-199-3
... the workpieces have been precleaned, processing for penetrant inspection should begin immediately. A processing flow diagram for the water-washable system, from precleaning to postcleaning, is presented in Fig. 5 . Time in each station, equipment used, and other factors can vary widely, depending on...
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
... become a consideration. The specifications must be examined for the painting requirements. This includes the requirements for precleaning, surface preparation, and coatings. Precleaning often is necessary prior to the production surface preparation. Examples include cleaning built-up areas of dirt...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005740
EISBN: 978-1-62708-171-9
... No need for precleaning No need for special machine Table 2 Pretreatment methods for spraying cylinder bores Grit blast (rotablast) Water jet Mechanical roughening process Schematic Parameter Grit size Water pressure Machining depth Air pressure Water flow...
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
... halide, to act as a chemical transfer medium for the aluminum 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...
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
... procedures. Generally, the nonferrous alloys 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...
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
... vapor Another concern is the infiltration of free oxygen into this atmosphere. Oxygen levels between 50 and 100 ppm have been shown to be detrimental to proper surface preparation for hot-dip coatings. Wet chemical precleaning and strip heating in a hydrogen-nitrogen atmosphere has certain...
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
... requires multistage cycles, usually comprised of the following steps: (1) precleaning with a solvent to remove most of the soil; (2) intermediate cleaning with alkaline cleaners; (3) electrocleaning to remove the last traces of solids and other contaminants that are especially adherent; (4) acid treatment...
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
... 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 alkaline solution. The advantage of solvent...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005341
EISBN: 978-1-62708-187-0
... application of the penetrant) to make the penetrant soluble in water. Solvent-removable: These also have an oil base and employ a solvent for both precleaning and removal of excess penetrant. Each of the aforementioned systems uses either a visible or a fluorescent penetrant material. The visible...
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
... welds are usually not a problem, because zirconium has a high solubility for its own oxide. Although some porosity 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...
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
... Metal-cleaning processes Cleaning process Cleaning media Application Effectiveness Emulsion cleaning: For intermittent or occasional cleaning Particles of soils are suspended in cleaning medium, then separated from surface Prepare for phosphating and precleaning before alkaline...
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
... (hard coat) Anodizing (sulfuric) Chromate treatment Electropolishing solution Source: Ref 2 Preparatory solutions clean the substrate surface so that it can effect a better bond with the electroplate. Preparation typically involves precleaning, electrocleaning, and...
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
... buffing. It is strongly recommended 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 ). Following the...
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
... precleaning small parts to remove most of the oil, the following cycle was established for small carbon steel parts before electroplating: Water rinse at 82 °C (180 °F) Immerse for 3 4 to 2 min in 55 to 70% sulfuric acid at 21 °C (70 °F), using a current density of 10 A/dm 2 (100 A/ft 2...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001228
EISBN: 978-1-62708-170-2