uitgegloeid

Uitgegloeid is a Dutch term used to describe a material that has undergone the gloeiprocess (annealing) and has been cooled in a controlled way to relieve internal stresses. The word is derived from uitgloeien, meaning to anneal, and the -d suffix marks the past participle. The label can apply to glass, metals, and some polymers, indicating a treatment aimed at enhancing formability and stability.

In glassmaking, uitgloeien relieves residual stress after forming, producing annealed glass. This type is easier to cut and shape and to work further, but it is less resistant to impact than tempered or laminated glass. In metals, particularly steel and copper alloys, the process involves heating to a specific temperature, holding for a period, and cooling slowly. The result is reduced hardness and increased ductility and machinability, along with lower residual stresses.

Typical effects of uitgegloeid material include improved deformability and reduced risk of unexpected brittle fracture due to internal stresses. However, the material may be weaker in terms of yield strength compared to its tempered state, and improper subsequent heating or mechanical work can reintroduce stresses.

In Dutch technical usage, uitgegloeid distinguishes products that have been stress-relieved through annealing from those that are tempered, hardened, or otherwise heat-treated for different properties. It is commonly referenced in contexts such as glass production, metalworking, and material specification.

See also: annealing, stress relief, tempering, heat treatment.