cold working process

[razajahanian]

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
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mechanical engineering