Steel Bright Bars - Related Processes

Stress Relieve Anneal: Sub-critical thermal treatment applied after cold drawing. Removes residual stresses in the bar and may also increase yield strength.

Straightening: Bending applied to bar through a set of rolls. Improves straightness.

Cutting: Separates into desired lengths by cold shearing or sawing. Improved length tolerance, end distortion and perpendicularity.

Chamfering: Cutting a taper and end-facing the bar. Eliminates end distortion and improves bar feeding.

Annealing: Heating above the critical temperature and slow coating the bar. Controls microstructure and softens the bar.

Normalizing: Heating above the critical temperature and air cooling the bar. Improves uniformity of microstructure.

Quenching and Tempering: Heating above the critical temperature and quenching the bar in oil or water followed by a tempering operation increased strength, hardness and toughness.