|
L
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.
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.
Lineal Footage Counter
Electronic device used to count
lineal footage of a coil.
Location
A coding system that defines the
physical placement of materials, usually to a high degree of
specificity.
Lock Out / Tag Out
Terminology used to describe the
process of securing an energy source so that work may be done. This is
accomplished by locking out all the energy sources pertaining to the
device, tagging out the resources, and trying out the device to make
sure that it is de-energized and safe for work to be done.
Lockseam Test
A test performed on a galvanized
product to evaluate the adherence of the zinc to the steel substrate.
Logistics
The science of identifying, maintaining, and transporting materials.
Loop Tower
1.
Area where the strip
accumulates enabling the line to continue running while making a weld.
2. Collecting unit used for storing steel. This enables the Entry
or Delivery End of the line to stop without stopping production.
Loose Wrap
A coil that is not wound tight.
Using too little tension when winding causes this condition.
Lot No.
Identifies groups of coils for a
particular customer order to be processed at a certain time; identifies
a particular group of coils to load.
Low Carbon Grade
At WSC, steel with carbon content
of less than .08%. See Medium Carbon Grade and High Carbon Grade.
Low Coating
A condition that occurs when the
coating thickness is less than customer or UL specifications.
Lowboy (or Stabilizer Roll)
Submerged roll in the pot used to
stabilize the strip as it exits the pot before entering the dies.
|
