Hot working of metal is carried outa) at the Recrystallisationtemperat...
Plastic deformation of metal carried out at temperature above the recrystallization temperature, is called hot working. Under the action of heat and force, when the atoms of metal reach a certain higher energy level, the new crystals start forming. This is called recrystallization.
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Hot working of metal is carried outa) at the Recrystallisationtemperat...
Hot working of metal refers to the process of shaping and forming metal while it is at elevated temperatures. This process is used to create a variety of products and components, including rods, tubes, sheets, and other shapes. Hot working is carried out above the recrystallisation temperature of the metal being worked on.
Reasons for Hot Working
Hot working is preferred over cold working for several reasons, including:
- It is easier to shape metal when it is at a high temperature because it becomes more malleable and ductile.
- Hot working reduces the amount of force needed to shape metal, which can lead to faster production times and reduced wear and tear on machinery.
- Hot working can produce more complex shapes and designs than cold working.
Recrystallisation Temperature
The recrystallisation temperature is the temperature at which a metal begins to recrystallise, which means that it starts to form new, smaller grains. This occurs because the metal has been deformed during the hot working process, and the new grains help to reduce the strain that has been placed on the metal.
Working Temperature
The working temperature for hot working of metal depends on several factors, including the type of metal being worked on, the desired shape and properties of the finished product, and the physical condition of the workpiece. In general, the working temperature is chosen to be above the recrystallisation temperature of the metal.
Conclusion
Hot working is a process used to shape and form metal at elevated temperatures. The working temperature is typically above the recrystallisation temperature of the metal and depends on several factors. Hot working is preferred over cold working for several reasons, including ease of shaping, reduced force needed, and the ability to produce complex shapes.
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