Trykprocessen

Trykprocessen, translated as the pressure process, is a broad term for industrial operations that apply substantial external pressure to a material to alter its geometry, density, or surface properties. It encompasses mechanical, hydraulic, and pneumatic methods used to form, shape, join, or finish materials. In metalworking, the process includes stamping, deep drawing, bending, and forging, typically performed with presses that convert rotational or pneumatic energy into linear force. In plastics and composites, extrusion, calendaring, and moulding rely on controlled pressure to push material through dies or cavities. In printing contexts, trykprocessen refers to applying pressure to transfer ink from a plate or roller to a substrate, a fundamental step in many press-based processes.

Key principles are force and area: pressure equals force divided by contact area, with control over duration, rate, and temperature to avoid defects. Modern presses use closed-loop hydraulic or servo-electric systems, with sensors and safety interlocks to regulate motion, cushion impacts, and ensure part quality. Quality control focuses on dimensional accuracy, surface finish, and defects such as wrinkling, spring-back, or tearing.

Applications span manufacturing of automotive parts, consumer electronics housings, packaging, and woodworking laminates, as well as research and prototyping. Safety considerations include machine guarding, emergency stops, lockout-tagout procedures, and proper lubrication and maintenance.

See also: metal forming, stamping, forging, extrusion, hydraulic press, pneumatic press, laminating.