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Lace
Area where the strip is joined together (with wire, bands, etc.) after
being broken.
Lacquer
A coating composition which is based on synthetic thermoplastic film
forming material dissolved in organic solvent and which dries
primarily by solvent evaporation during stoving operations.
Lagging
Slack in the strip.
Laminations
Imperfections resulting from the presence of foreign inclusions, laps,
or blisters typically aligned parallel to the worked surface or
rolling direction of the metal.
Lap Weld
Done at Platers; coil ends are "lapped" over one another and welded;
it doubles the thickness of the steel at the weld and is marked by a
hole punch.
Lead-Time
Delivery time for an item of inventory to be moved from a source
location to a destination via a specific route. Detail is specific to
the level of the location. Also the time to produce a customer’s order
from order placement to shipment.
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Leveling
The process by which a leveling machine flattens metal strip, coil, or
sheets by bending it up and down over the interrupting arcs of upper
and lowers sets of long, slender work rolls. Machines generally employ
17, 19, or 21 relatively small diameter rolls whose deflection under
load is controlled by additional back-up rollers and a rigid frame.
Leveling Rolls
A set of five adjustable rolls that flatten or level the front end
strip of steel when running through the #1 and #2 feeders.
Light Gauge (Defect)
Product with a thickness below the customer’s minimum gauge tolerance.
Light Special Treatment
A surface treatment of dried-in-place chromate for Weirton Steel’s
electrogalvanized product (Weirzin) which provides corrosion
resistance. A lighter film weight is applied as compared to special
treatment. (See Special Treatment)
Line Marking
Lines are used as the identifying marks on the heavy Tin coated side
of the strip to identify it to the customer.
Line Speed
Speed at which the coil is processed through the line; Platers may run
1800+ feet per minute.
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