Power Tool Cleaning Flashcards
(20 cards)
Power tool cleaning uses ___-___ ___ cleaning tools.
Power-assisted mechanical
Power tools are essentially similar to the tools used for___ ___ ___ but with power sources such as electricity or compressed air.
Hand tool cleaning
Power tool cleaning can remove 1___ mill scale, rust, paint, and other detrimental foreign matter, but is not intended to remove 2___ materials.
- Loose
2. Adherent
According to SSPC-SP 2, mill scale, rust, etc, is considered adherent if it cannot be?
Removed by lifting with a dull putty knife.
The standards most commonly used to govern the power tool cleaning process are?
SSPC-SP 3
ISO 8501-1 St 3 (or St 2)
Power tool cleaning is frequently used in ___ ___.
Maintenance operations
In addition to removing loose mill scale, rust, and paint, this method may be used to remove?
Weld Flux, weld splatter, lamination, and to smooth rough welds and round out gouges.
SSPC-VIS 3 (A visual guide to power tool cleaning.) illustrates four initial rust grades.
Rust Grade A: Steel surfaces ___ covered with adherent mill scale, ___ or __ rust visible.
Rust Grade B: Steel Surface ___ covered with both ___ ___ and ___.
Rust Grade C: Steel surface ___ covered with ___. Little or no ___ visible.
Rust Grade D: Steel surface completely covered with ___. ___ ___.
A: Completely covered with mill scale, little or no rust visible.
B: Mill scale and rust.
C: Completely covered with rust. Little or no pitting visible.
D: Completely covered with Rust; Pitting visible.
ISO 8501-1 lists four rust grades by written description and visual aid.
Rust Grade A: Steel surface ___ covered with adherent mill scale, but ___ if __ rust.
Rust Grade B: Steel Surface which has begun to ___ and from which the mill scale has begun to ___.
Rust Grade C: Steel surface on which the mill scale has ___ ___ or from which it can be scraped, but with ___ ___ visible under normal vision.
Rust Grade D: Steel surface on which the mill scale has ___ ___ and on which ___ ___ is visible under normal vision.
A: Largely covered with adherent mill scale but little, if any, rust.
B: Rust and from which the mill scale has begun to flake.
C: Rusted away or from which it can be scraped but with slight pitting visible under normal vision.
D: Rusted away and on which general pitting is visible under normal vision.
SSPC-SP 11 is?
Power cleaning to bare metal.
SSPC-SP 11 calls for power tool cleaning to produce a ____ ___ ___, and retain or produce a profile, when a clean roughened bare metal surface is desired but when abrasive blast is not feasible or allowed.
Bare Metal Surface.
Metallic surfaces prepared according to SSPC-SP 11, when viewed without magnification, shall be free of all visible oil, dirt, dust, grease, mill scale, rust, oxide, corrosion products, paint, and other foreign matter. True or False.
True
SSPC-SP 11: Slight residues of rust and paint may be left in the bottom of pits if the original ___ is ___.
Surface is pitted.
SSPC-SP 11: If painting is specified, the surface must be roughed to a degree suitable for the paint system, with a profile not less than _ ___.
1 Mil.
Visual guides and standards for power tool cleaning are?
SSPC VIS 3
ISO 8501-1 (St 3 or St 2)
SSPC-SP15
Commercial guide for Power Tool Cleaning.
SSPC-SP15 calls for power tool cleaning to restore minimum ___ ___ ___ using a commercial grade power tool cleaned surface.
1 Mil profile
Commercial grade power tool cleaning is what standard?
SSPC-SP15
SSPC-SP15 is described as free of oil, rust, dirt, grease, coatings, mill scale, oxides and foreign matter. Yet this standard permits ___ ___ to remain on a defined percentage of the cleaned surface.
Random Staining
SSPC-SP11 (Power Tool Cleaning to Bare Metal) requires removal of all ___ ___.
Surface staining.
