Hydraulic riveting

A rivet is a short cylindrical bar with a head integral to it. The cylindrical portion of the rivet is called shank or body and lower portion of shank is known as tail. The rivets are used to make permanent fastening be- tween the plates such as in structural work, ship build- ing, bridges, tanks and boiler shells.

The riveted joints are widely used for joining light metals. The fastenings (i.e.joints) may be classified into the fol- lowing two groups : 

1. Permanent fastenings are those fastenings which can not be disassembled without destroy- ing the connecting components. The examples of permanent fastenings in order of strength are sol- dered, brazed, welded and riveted joints. 

2. Temporary or detachable fastenings are those fastenings which can be disassembled with- out destroying the connecting components. The examples of temporary fastenings are screwed, keys, cotters, pins and splined joints. Figure 1: Rivet parts. 

3. Methods of Riveting The function of rivets in a joint is to make a connection that has strength and tightness. The strength is necessary to prevent failure of the joint. The tightness is necessary in order to contribute to strength and to prevent leakage as in a boiler or in a ship hull. When two plates are to be fastened together by a rivet , the holes in the plates are punched and reamed or drilled...

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