Question

Difference between hot riveting and cold riveting

Answer 1

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The hot riveting process uses heat and pressure to form fastener as the result the material being formed become malleable  and collapses under pressure that is applied by the power-head.

While cold riveting is the process of heading-over rivets without first heating them. This is done with the help of rivets not over three eighths of an inch in diameter. 

Answer 2

In hot riveting, one end of the rivet shank is heated at a very high temperature till it becomes red hot. This end is then hit hard by a hammer many times. This is an example of tensile stress. Hot riveting is used for steel rivets that have diameters of above 10 mm.

In cold riveting, there is no heating process. The connecting elements are not held together with much force as in hot riveting. The shank is primarily subjected to shear stress. Cold riveting is used on steel rivets with diameters less than 10 mm and non-ferrous rivets made of aluminum, copper and brass.