On the left hand side one can see the Step 2 of crankshaft hot forging. One can visualize the changes in microstructure in crankshaft by seeing changes in the mesh. On the right hand side, the picture shows 3 red parts. The 1st red part is the initial billet which is used for 1st step forging. The 2nd red part shows the forged billet after the 1st step. This is the intermediate step. The 3rd red part shows the final forged crankshaft after forging in step-2. The lower two yellow parts shows the upper dies used for step 1 and step 2 processes respectively. The green coloured part shows the lower die which used for both steps.