Temper Rolling Of Sheet Steel

Temper rolling is the process of lightly cold rolling sheet steel.

Temper rolling of sheet steel.

The primary purpose of a temper mill is to improve the surface finish on steel products. Temper rolling increases the yield point to 30 50 meganewtons per sq m 3 5 kilograms force per sq mm reducing the possibility of formation of flow lines which mar the surface of products on the metal during cold stamping. It will also ensure your steel obtains your desired surface texture and mechanical properties. This increases the density of the steel by reducing its overall thickness between usually 1 5 to 2 without allowing the steel to spread out while under pressure.

The metal forming method at a temper mill involves rolling the sheets of steel through what is known as a cold reducing process or temper pass. Temper passing is performed to improve flatness minimize the tendency to stretch strain and flute. The thickness of the steel is typically reduced by 0 5 percent to 3 percent and can be used to change the gauge and inconsistencies of the steel. It is typically done after the annealing process or hot roll after pickling to improve flatness minimize any tendency to stretch strain and flute and create a specific surface texture.