CONTINUOUS ANNEALING LINES
Steelmakers use Continuous Annealing Lines (CALs) to modify the grain structure of steel through heat treatment. This changes the properties of the steel, including hardness and strength.
In other words, CALs are used to soften materials after cold rolling by heating the strip to temperatures of up to 850oC. The material is held at this temperature, and cooled at a desired cooling rate to a specific temperature, achieving the mechanical properties necessary for each application in a precisely controlled way.
Stages and Process
Rapid gas-jet cooling: Uniform strip temperature through a unique gas-jet nozzle shape; strip temperature-controlled through the adjustment of the gas jet velocity in the strip’s width direction, and cooling capacity raised through a high concentration of hydrogen
Roll quenching: Rapid quenching through a water-cooled roll; uniform strip temperature through an auxiliary gas-jet nozzle, and reduction of operating costs
Water quenching: Possibility of manufacturing ultra-high strength steel for automobiles through ultra-rapid quenching
Features of GrowMech CALs
- Accumulators
- Variety of furnaces
- Atmosphere control
- Line stop
- New Technology
- High-speed continuous annealing technology improves productivity
GrowMech Group has a reputation in the steel industry for supplying high high-quality, reliable temperature measurement solutions for several years. We provide custom essential measurements for professional steel makers.
Customer Benefits
- Extremely accurate control of the atmosphere conditions
- Low energy consumption by only heating the actual strip width
- Proven on/off technology with low-pollution burners
- Constant and controlled cooling across the strip width which adjusts additionally to the strip width, thus saving energy
- Single-source supplier for furnace, mechanical, and automation equipment