Cold working processes

 Cold working processes:

Below the recrystallization temperature if the mechanical work is done on the metals , there will no grain growth but it must be grain this integration elongation , the process is known is cold working processes. In cold working process greator pressure is required than that required in hot working. As the metal is in a more rigid state. It is not permanently deform until stress exceeds the elastic limit. Most of the cold processes are performed at room temperature , the different cold working processes are

1: Drawing

·        Wire drawing

·        Tube drawing

·        Blanking

·        Spinning

2:  Sequeezing

·        Coining

·        Sizing

·        Riveting

 3:   Bending

·        Angle bending

·        Plate bending

·        Roll forming

 4:  Shearing

      >Punching                >Blanking

           > Trimming               > Perforating

             >Notching                     >Launcing

                >Slittig

5:Extruding