hot work

present singular third person hot works · participle present hot working · participle past hot worked · past hot worked

1. engineeringTo plastically deform metal (or other material) at temperatures above the recrystallization temperature but below the melting point of the material.

   Wrought copper and copper alloys are readily hot worked by rolling, forging, pressing, bending, and forming operations.

   1971, United States. Naval Ship Systems Command, Ship Metallic Material Comparison and Use Guide, page 5-2

   1 more example

   Brasses of this composition therefore should be hot worked above 600–700 ° C giving a fine grain and fibrous structure.

   1972, Arthur Cyril Davies, Science Practice Welding, page 110

1. uncountableengineeringAny of several plastic deformations of metal (or other material) at relatively high temperatures.

   Although tungsten hot work steels can be air hardened, they are usually quenched in oil or hot salt to minimize scaling.

   2008, Flake C. Campbell, Elements of Metallurgy and Engineering Alloys, page 420

2. uncountableAny type of work, such as welding, soldering, or glassblowing, that is a potential fire hazard because it causes sparks or flames.

   Many organizations use a permit procedure for all hot work, except that involving normal operations or processes.

   2018, Frank R. Spellman, Kathern D. Welsh, Safe Work Practices for Wastewater Treatment Plants, page 151

   1 more example

   Hot work presents two significant hazards. First, open flames, flying sparks and hot surfaces can ignite flammable gases and vapors. Second, hot work may produce toxic flames and gases.

   1994, John F. Rekus, Complete Confined Spaces Handbook, page 304