Extrusion operators operate machines that shape metal and plastic into a variety of shapes, such as engine block parts or plastic tubing. For a quality final product, the operator must pay close attention to the parts extruded from the machine, noting size and dimension accuracies. Many people who work as extrusion operators learn how to operate machines as apprentices to more experienced workers or through trade school courses.
To create the desired part form, metal and plastic extrusion machines must be set up with specific dies, or cutting shapes. Extrusion operators start each day double-checking die placement in the machine. Over time, a die can wear out or become misshapen, resulting in a defective final product after the extrusion process. Before starting the machine’s operations, an extrusion operator visually inspects the die’s shape to determine its functionality. The extrusion operator should note any worn dies and replace them as soon as possible.
During operation, the extrusion machine should be constantly monitored. During the extrusion process, operators adjust functional parameters in small increments using controls on the machine’s exterior surface or at a nearcontrol station. Temperature and air pressure, for example, must be adjusted according to the material being extruded, whether it is metal or plastic.
The extrusion machine’s manufacturing speed is also controlled the operator. When a machine extrudes material too quickly, it compromises the structural integrity of the part, wasting material and slowing production. By keeping the machine running at a consistent speed, the operator must strike a balance between producing a high-quality extruded product and meeting overall production requirements.
Extrusion operators should enjoy both hands-on mechanical work and computerized job duties involving the control station to be successful. Many experienced operators work independently for the majority of the day, whereas an apprentice may be observed multiple times throughout the shift to ensure proper machine operation. The extrusion operator must constantly monitor the final product’s accuracy, confirming diameters and part sizes throughout the day.
Operators must have faith in their ability to diagnose and repair a malfunctioning machine. Regardless of the production needs, a broken machine should be shut down immediately and reported to the supervisor. The operator should carry out rapid repair procedures. The machine should not be reintroduced to the production line until the operator is certain that its functions are within specifications.
Some employers require an extrusion operator to have a degree or certificate in extrusion machine theory from a trade school. After receiving a degree or certificate, newly trained operators should keep in mind that on-the-job training will still be required. For specific extrusion machines, each manufacturing company has slightly different operational requirements.