| Warm-up/Preheat |
Initial preheat of a glass furnace |
| High Velocity Burner |
Excess air gas burner (natural, propane, coke oven gas, fuel gas, gasoil) which promotes good temperature uniformity throughout the structure and close control of the rise over a range from ambiant to takeover (50° – 1200° C). |
| (thermal) Insulation |
Insulating blanket applied outside the structure |
| Forced convection heating |
Convection heating consists of heating the surrounding air and maintaining it at the required temperature. The hot air produced by a generator ismixed to the ambient air which in turn heats the elements to be treated. |
| Cocoon |
Exterior insulation of a large hollow piece to be treated by interior controlled heating |
| Codap |
Construction rules for pressure vessels not exposed to flames |
| Codeti |
Industrial rules for the construction of pipework |
| Residual stresses |
Permanent internal stresses after stress relief applied to a mechanical structure |
| Expansion control |
Action consisting of supervision and adjustment of binding steelwork (tiebars and pushbolts) of a glass furnace to control the thermal expansion |
| Control of hardness |
Non-destructive test to determine the hardness of the piece |
| Glass furnace draining |
Operation consisting of emptying the molten glass from a furnace. The draining may be partial or total |
| Temperature curve |
Instruction concerning the temperature to be followed or the result of a thermal operation |
| Thermal cycle |
Temperature cycle to follow to execute the heat treatment of a unit |
| Degassing |
Operation consisting of eliminating dissolved hydrogen from a piece |
| Furnace cooldown |
Glass furnace stoppage with cooldown |
| Stress relieving |
Heat treatment of a metal to eliminate physical stresses acquired in previous operations (welding, machining, forge, etc.). |
| Regenerator maintenance |
Operation attempting to eliminate sulfate or other deposits in the packings of glass furnace regenerators |
| Curing |
Operation consisting of heating a fresh refractory lining to accelerate hardening |
| Feeders |
Canal that distributes molten glass at the exit from the melter |
| Float glass |
Flat glass obtained by floating on a bath of molten tin |
| Horeshoe/endfired furnace |
Glass furnace equiped with regenerators with alternate firing from each |
| Float furnace |
Furnace making flat glass by floating it on a molten tin bath |
| Sintering |
Hardening by drying out of refractory materials apllied in liquid phase |
| Refractory installer |
Person charged with the construction or maintenance of the refractory elements of a furnace or a chimney |
| Refractory installation |
Industrial activity charged with the construction or the maintenance of the refractory elements of a furnace or chimney |
| Steam generator |
Equipment in a nuclear power station for the production of steam |
| Ladle heating/maintaining |
Operation consisting of maintaining in temperature a foundry ladle |
| Holding in temperature |
Operation consisting of maintaining a steady temperature in an industrial installation |
| MASE |
Health and safety management |
| Post-heating |
Operation consisting of maintaining in temperature a piece after welding |
| Preheating |
Operation consisting of raising the temperature of a piece before welding to improve the quality of the weld |
| PWHT |
Abreviation for Post Weld Heat Treatment (corresponds to French TTAS) |
| Tempering |
Heat treatment to eliminate stresses created by quenching |
| Drying-out |
Operation consisting of eliminating water contained in a refractory material |
| Refractory lining dryout |
Operation consisting of eliminating water contained in a refractory material |
| Welding/weld |
Operation consisting of joining two pieces by melting their matter with or without adding further metal |
| Thermal heating station |
Equipment designed to control a burner |
| Thermocouple |
Instrument used to measure a temperature by creation of a (small) electric current |
| Heat treatment |
Operation by modification of the temperature which modifies the metallographic structure of the piece |
| Heat treatment after welding |
Heat treatment carried out to eliminate the internal stresses of a piece caused by welding |
| Post weld heat treatment |
Heat treatment process to eliminate internal stresses of a piece after welding |
| PWHT |
Abreviation for Post Weld Heat Treatment usually to stress relieve a piece |
| HT |
Heat treatment |
