2　Terms

2.0.1　Reheating Furnace

Furnace used to heat blooms or billets before hot working in the steel rolling and/or pipe rolling shops of iron and steel works.

2.0.2　Burner

Device used to provide heat for the reheating furnace by the means of safely and stably burning a mixture，at a proper proportion，of fuel and combustion promoter.

2.0.3　Regenerative Burner

Burner in which the regenerator，used as a medium to transfer heat，is heated by the hot flue gas in the heat storage period and then，in the heat release period，releases heat to preheat the combustion air/gas to a certain temperature，and transfers the heat of the flue gas to the combustion air/gas and makes it burning.

2.0.4　Recuperator

Device used to preheat，in a non-contact way，the air/gas with the waste heat of the flue gas.

2.0.5　Expansion Gap

Thermal expansion gap in the refractory construction reserved during furnace lining.

2.0.6　Partition Appliance

Device which，when the gas piping system is in a closed or blocked state and without any abnormal situations，bears the pressure of medium within the design range and prevents the gas from leaking to the isolated area.

2.0.7　Evaporative Cooling Device

Device which，utilizing the property of water，that is，absorbing heat during evaporation，take away the heat of the support skid or other equipment in the furnace and maintain the temperature of such beam or equipment in certain range and，at the same time，send the steam out.

2.0.8　Pressure Test

The test in which gas or liquid is used as the medium to gradually exert on the pipe a pressure to the specified value to inspect the strength or tightness of the pipe or equipment.