Lamination Of Armature

Whenever we stimulate the field winding then it generates a flux which connects by the armature and this will cause an emf therefore a flow of current in the armature.
Lamination of armature. Generally the dc motor includes two windings such as armature winding as well as field winding. Armature reaction is the result of the armature flux on top of main field flux. The individual iron pieces that make up the armature are referred to as laminations. Laminations are the steel portions of the stator and rotor consisting of thin lamination sheets stacked together.
Adequate lacquer coatings are the main reason why manufacturers make sure that armature core laminations remain thin both due to the cost factor and manufacturing purposes. Motor lamination steel or electrical steel is a low carbon alloy with silicon in it that is used because it has the properties most suited to forming a core from. These laminations can be stacked loose welded or bonded together depending on your application. Laminations sheets are used instead of a solid pice to reduce eddy current losses.
The top image depicts a solid armature while the bottom image shows an armature made of five laminations. With the use of a lacquer coating there is an insulation formed to protect laminations since eddy currents are incapable of bouncing from one lamination to the next.