This is because, after hot riveting, the contraction in the shank length tends to pull the parts together, making a tight joint.įor riveting the two plates together, the diameter of rivet hole is kept slightly more than the rivet head. Hot riveting produces better results when compared to cold riveting. Hence, a certain amount of clearance between the hole and shank must be provided before riveting. While forming the rivet head, the shank will bulge uniformly. Pressure may be applied to form the second rivet head, either by direct hammering or through hydraulic or pneumatic means. Then the shank end is made into a rivet head by applying pressure, when it is either in cold or hot condition.

For this, a rivet is first placed in the hole drilled through the two parts to be joined. Riveting is the process of forming a riveted joint. The rivets are widely used in structural works like roof trusses, bridges, ship and aircraft building, boilers, pressure vessels, air receivers and many other engineering works. The insertion is done by hammering or by pressing with a machine. It is inserted in a hole drilled through the parts which are to be connected. The round bar or steel or wrought iron with a head on one side and tail on the other end is known as rivet. In this process, the parts joined together can be separated easily when required without breaking any part of fastener.ĮXAMPLES: Bolts and Nuts, Studs and Nuts, Keys, Pins etc. The process of joining two or more than two parts of machine or structure by means of various fasteners temporarily is known as temporary fastenings. If required to be separated, the fastening is bound to be broken.ĮXAMPLES: Riveting, Soldering, Brazing, Welding etc. In permanent fastening, the parts once joined together cannot be separated from each other. The process of joining two or more than two parts of machine or structure by means of various fasteners permanently is known as permanent fastenings.

Rivet drafting