Causes Of Lamination In Steel

Can cause a poor weld to be made.

Causes of lamination in steel.

Electrical steel is an iron alloy tailored to produce specific magnetic properties. Rolled steel bar stock is made by rolling and rerolling steel billets until the desired shape and dimensions are attained. The laminate will stick together but applying and bending force can cause it to delaminate. Lamination in carbon steel plates can occur within the body of a plate or at edges.

A variety of materials including laminate composites and concrete can fail by delamination. Lamination means a process applied to alloys metal plastics and other materials consistent in subjecting the material to the constriction action by a machine called a rolling mill made up of two conjugated cylinders fig 1 rotating in the opposite direction with the same peripheral speed so that the material is forced to assume a section corresponding to the free light that remains among the cylinders themselves. The wrong temperature impurities etc. Electrical steel is usually manufactured in cold rolled strips less than 2 mm thick.

Plate lamination in carbon steel happens when folds or layers of plates are rolled together into a single plate thickness. Small hysteresis area resulting in low power loss per cycle low core loss and high permeability. These folds and layers do not bond together and will separate when metal is worked. Laminations are an imperfection in a steel or alloy resulting from blisters seams foreign material and or scratches on an ingot or billet that are not repaired during the rolling process.

These strips are cut to shape to make laminations which are stacked together to form the laminated cores of transformers and the stator and rotor of electric motors.