Function
The process goal is physical property enhancement through cold forming of the steel product in the bite of the work rolls. The physical properties that are enhanced by the temper pass due to elongation of the product include:
- Dimensional trueness and repeatability
- Suppression of yield point elongation
- Improved product surface finish
- Improve product shape and flatness
- Decrease coil memory
- Increase product yield strength
- Develop proper stiffness or temper
Typical elongation produced in the product is 0.5% to 2%. Product dimensions vary. Thicknesses include typical sheet metal gauges up to 3/4" thick plate. Widths vary from 36" to 125".
The finish of the rolled product is controlled by using rolls having a variety of surface finishes designed to impart the desired finish to the product. Roll finishes range from ground and polished rolls to impart a bright finish, to shot-blasted or electric-discharged textured rolls that produce a dull, velvety finish on the steel surface.
Typical auxiliary equipment includes PLC based controls, overhead traveling cranes, roll changing equipment, roll grinding equipment, hydraulic power unit(s), bundle lifting devices, Coil handling devices, etc.
Read more about this topic: Temper Mill
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