Hot Rolling Production Professional Terms and Vocabulary
A
Annealing - Heating a material and then cooling it to make the material softer and more easily deformed.
Abrasive - A substance that is used to cut or sand away metal to create a desired shape of the material.
Anneal - To soften a material by heating it and then cooling it in order to make it easier to shape.
Axial Pressure - A pressure force used in rolling processes that helps to keep the material aligned.
B
Back Pass - A process that occurs at the end of the rolling process, where the material is rolled back over itself to produce a smooth finish.
Billet - A product in which the material is reheated and shape into a slab or bloom before it is rolled into its final shape.
Blanking - A cutting process in which a piece of material is cut from a metal plate.
Burnishing - Using a hard material to smooth out the surface of metal.
C
Cold Rolling - Rolling cold material, usually at temperatures below metal’s recrystallization temperature.
Calibration - Making sure the rollers and other parts of the rolling equipment are properly spaced and aligned.
Cambering - The process of setting a certain angle on the rolls that is designed to produce the desired shape of the metal.
Chemical Descale - A process that uses a chemical bath to remove scale and other impurities that may be present on the surface of the metal.
Coil Mill - A type of rolling mill specifically designed to produce coils of metal.
D
Die - A tool used to shape metal during the rolling process.
Defects And Flaws - Unwanted marks or shapes on the surface of the metal due to improper rolling.
Drawing - A process which involves using a draw die to shape metal.
E
Edge Trimming - Removing the thick edges of metal plate with the use of a trimming die.
F
Friction Rolling - A process that involves rolling and sliding of the material against a surface.
Flattening Sun - A process that involves rolling the material while simultaneously heating it until it is smooth.
Fly-Cuts - Small cuts in the surface of the metal that are caused by roll separator wear.
G
Galling - A type of abrasion that occurs when two pieces of metal rub together.
Grooving - Finishing the inside walls of tubes and other materials by making grooves in the surface.
H
Hardening - Increasing the strength of the material by heating and then cooling.
Hydraulic Presses - Machines that use fluid pressure to shape metal.
I
Impact-Rolled - A process in which the material is hammered and rolled at the same time in order to reduce its thickness.
J
Jogging - A process in which the material is moved back and forth in order to reduce its thickness.
K
Knurling - Making ridges or notches in a material in order to ensure a better grip.
L
Levelling - An operation in which the thickness of the material is gradually reduced until it has the desired shape.
M
Mill Scale - Small pieces of metal material that have peeled off the surface during hot rolling.
N
Noise Control - Keeping noise levels to a minimum during the production process.
O
Oil Quench - A process in which oil is used to rapidly cool heated metal.
P
Peeling - A process in which a layer of metal is removed from the surface of a material.
Pickling - A process in which a material is soaked in an acid solution to remove any oxidation from its surface.
Q
Quenching - A process in which the material is cooled quickly after heating in order to increase its strength.
R
Redrawing - A process in which a material is drawn through a die several times in order to shape it.
Scalebreaker - A device that is used to remove scale from the surface of the material.
S
Seam Welder - A device used to weld together sheets of metal.
Shear - A device that is used to cut metal quickly and accurately.
T
Temper Rolling - A process in which the material is reheated and rolled in order to reduce its strength.
U
Ultrasonic Testing - A process in which sound waves are used to detect any flaws or defects in the material.
V
Vacuum Furnace - A type of furnace that uses low pressure to increase the speed at which a material is heated.
W
Warm Rolling - A process in which the material is rolled at temperatures below its recrystallization temperature.
X
X-Ray Testing - A process that uses x-rays to detect any invisible flaws or defects in the material.
Y
Yield Strength - The maximum amount of stress that a material can withstand before it deforms permanently.
Z
Zero Slabbing - A process in which the material is reduced to a slab without making any contact with the rolls.
