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Ladle
Metal receptacle frequently lined with refractories used for transporting and pouring molten metal. Types include hand bull, crane, bottom-pour, holding, teapot, shank, lip-pour.
Ladle, Bottom-Pour
Ladle from which metal flows through a nozzle in the bottom.
Ladle, Bull
A large ladle for caring molten metal. Frequently used to designate a transfer ladle.
Ladle, Lip-Pour
Ladle in which the metal is poured over a lip.
Ladle, Teapot
A ladle in which, by means of an external spout, metal is removed from the bottom rather than the top of the ladle.
Lance, Oxygen
A device, consisting of steel pipe, tubing, oxygen source, and controls which uses the heat of burning steel pipe for melting. Frequently used to open frozen tape or slag holes.
Lateral Expansion
A measured property used in Charpy Impact Testing. Refers to the increase width of the specimen after fracture.
LEFM (Linear Elastic Fracture Mechanics)
A method of fracture analysis that can determine the stress required to induce fracture instability in a structure with a crack like flaw of know size and shape.
Lining
Inside refractory layer of firebrick, clay, sand, or other material in a furnace or ladle.
Lining, Monolithic
A lining made without the customary layers and joints of a brick wall. Usually made by tamping or casting refractory material into place, drying, and then burning in place on the job.
Liquid Penetrant Testing
A nondestructive testing method suitable for evaluating the surface integrity of non-magnetic and ferro-magnetic parts.
Logo
The sign, mark, or distinguishing letter designating the manufacturer.
Loose Molding
The molding process utilizing unmounted patterns. Gates and runners are usually cut by hand.
Loose Piece
1) Core box: part of the core box which remains embedded in the core and is removed after lifting off the core box. 2) Pattern: laterally projecting part of a pattern so attached that it remains in the mold until the body of the pattern is drawn. Back-draft is avoided by this means. 3) Permanent mold: part which remains on the casting and is removed after the casting is ejected from the mold.
Lost Foam Process
Casting process in which a foam pattern is removed fro the cavity by the molten metal being poured.
Low Stress Scratching Abrasion
Abrasion involving near zero impingement angle for the striking particle, also parallel flow erosion.