Afharden

Afharden is a Dutch verb meaning to make something harder or more rigid, typically by a post-processing treatment that increases hardness or strength. The prefix af- indicates completing or finalizing a process, while harden is the base verb. In technical contexts, afharden is used to describe processes that harden materials after an initial forming or setting, rather than hardening in the initial stage.

Common uses include metallurgy, where afharden refers to heat-treating methods such as heating, quenching, and tempering to increase the hardness and strength of steel and other alloys. In construction and materials science, the term can describe the later stages of curing or aging in which concrete, polymers, or composites gain final hardness and mechanical properties. In the manufacturing of plastics and resins, afharden may describe curing or cross-linking reactions that convert a soft, workable material into a rigid solid.

In Dutch technical writing, afharden is often contrasted with harder or set during the initial forming stage; the goal is a stable, durable material with properties suited to service conditions. The exact procedures and time scales vary by material and application, and specifications are defined by industry standards or product datasheets.

See also: hardening, curing, tempering, polymer curing, concrete curing.