a template used for verifying the inside radius of material being rolled
back stepping
a welding sequence designed to minimize distortion by welding short distances, from a forward point back to the previous weld
base metal
the metal that is being welded
bender
equipment used to bend tube, pipe or rod; some types include mandrel benders, tube benders and manual benders
brake press
stationary equipment used to bend metal sheet or plate
Computer Numerical Control (CNC)
a control system in which numerical values corresponding to desired tool or control positions are generated by a computer/computer program
ductility
ability of a material (such as metal or asphalt cement) to undergo permanent deformation through elongation (reduction in cross sectional area) or bending at room temperature without fracturing; easily molded or shaped
ferrous
containing iron
filler metal
the metal that is added to the base metal through the welding process
galvanizing
a metallurgical process done to coat steel with another metal (usually zinc) to prevent corrosion
heat numbers
reference numbers applied to materials at time of manufacture; used for traceability
induction heater
type of heating equipment that generates heat by creating an electromagnetic field
ironworker
stationary equipment used to perform a number of tasks including plate and bar shearing, coping and mitering of structural shapes, punching, bending and notching operations
jig
a device used to position and hold parts for repetitive assemblies
layout
the process of transferring lines, centres, and other informative markings from the blueprint
material allowance
total overall amount of material required to fabricate the part including any extra material required for the process
metallurgy
science of the chemistry and physical properties of metals
notching
a shearing process done to remove a small notch of material (usually with an ironworker)
oxy-fuel cutting
cutting that uses the flame of an oxy-fuel torch and high pressure stream of oxygen
piece marks
numbers and letters that identify a sub-component or a component used to locate the piece on the assembly
plasma cutting equipment
equipment used to cut ferrous and non-ferrous metals by superheated gas; the heat is generated by an electrical arc, turning the gas into plasma
plate roller
stationary equipment used to roll metal sheet plate into cylinders or curved sections
shape roller
stationary equipment used to roll metal shapes such as angle iron, tubing and channel
shears
stationary equipment used to cut metal sheet plate
slag
the residue produced when welding or cutting
softeners
material used to protect rigging equipment and components from damage caused by contact with each other
stretch-out
a length of a flat piece of metal prior to forming
tack weld
a small weld used to hold parts in position prior to final welding
template
a gauge or pattern used as a guide to replicate a piece being fabricated
tolerance
a permissible deviation from a specified dimension
traceability
part of a quality assurance system that keeps track of the origin of materials by heat numbers or parts numbers
quality assurance
system of verifications to ensure that manufactured items conform to standards and specifications
weldment
a welded assembly or an assembly in the process of being welded
weld distortion
change in the shape of the welded material that is being caused by the expansion and contraction of the metals due to the heat input from the welding process