Subject Specific Terminology (SST)

Annealing: A process that involves heating and cooling which is usually applied to induce softening. The method and temperature range for heating and cooling varies for different metals. 

Bobbing Compound: An abrasive compound used to charge polishing accessories like bristle wheels, end brushes and felt buffs.

CAD: Computer-Aided Design.

CNC: Computer Numerical Control.

Countersinking: A process used to allow the head of a countersunk bolt, screw or rivet, when placed in the hole, to sit flush with or below the surface of the surrounding material.

Counterboring: Counterbore holes are used to increase a hole's opening and produce a flat bottom. As a result, socket-head screws can sit flush against the surface of the part.

Deburring: removing sharp raised edges from work-pieces.

Drawing: Drawing is a manufacturing process that uses tensile forces to elongate metal. As the material is drawn (pulled), it stretches and becomes thinner, achieving a desired shape and thickness.

Fair Work Act 2009: The Fair Work Act protects certain rights, including workplace rights; the right to engage in industrial activities; the right to be free from unlawful discrimination; the right to be free from undue influence or pressure in negotiating individual arrangements.

Honing: Honing is an abrasive machining process that produces a precision surface on a metal workpiece by scrubbing an abrasive grinding stone or grinding wheel against it along a controlled path.

Hot Forging: a metal shaping process in which a malleable metal part, known as a billet or workpiece, is worked to a predetermined shape by one or more processes such as hammering, upsetting, pressing and so forth where the workpiece is heated up to about 75% of its melting temperature

Linishing: the process of using grinding or belt sanding techniques to improve the flatness, smoothness and uniformity of a surface and its finish

MIG: Metal Inert Gas.

Pinning:  Pinning refers to the clogging of the file teeth with pins, which are material shavings. These pins cause the file to lose its cutting ability and can scratch the workpiece.

Planishing: The process involves using multiple hammer strikes, overlapping on the metal to smooth out the surface. A planishing hammer has two ends - one of them flat to smooth the metal, and the other rounded to help shape it.

Reaming: a cutting operation that involves enlarging existing hole diameters more accurately and enhancing the surface finish of the hole's walls.

Spot Facing: facing the area around a bolt hole where the bolt's head will sit, which is often done by cutting a shallow counterbore, just deep enough "to clean up"—that is, only enough material is removed to get down past any irregularity and thus make the surface flat

Tack Welds: Small and temporary welds that hold parts together ready for final welding. Using tack welds mean that fixtures may not be required to hold parts together to create a finished weld. Tack welds maintain the desired alignment and gap between the pieces of metal being joined.

TIG: Tungsten Inert Gas.

TPI: Teeth Per Inch.

Tube Forging: Tube Forging, also referred to as upsetting, is a process that thickens the end of a steel tube after heating the tube and simultaneously holding the tube and driving the tube material onto itself

Work Hardening: Work hardening, also known as strain hardening, is the process by which a material's load-bearing capacity (strength) increases during plastic (permanent) deformation. This characteristic is what sets ductile materials apart from brittle materials.

WHS: Work Health & Safety.

WHS ACT 2011: The main object of the Act is to provide for a balanced and nationally consistent framework to secure the health and safety of workers and workplaces. It does this by: protecting workers and other persons from harm by requiring duty holders to eliminate or minimise risk.