Indian Email ID's Database: RIVET AND ITS TYPES

A rivet is a permanent mechanical joint which are broadly used to joint structure, ships, barrels etc. These joints are widely used in ship and boiler industries to join the structure member.

A rivet is a mechanical joint which is cylindrical in shape and having a head. It is used to joint structure member. It is a permanent joint which mean that it cannot be disassembled without failure of machine component. This joint form interference fit to joining the parts. Rivets apply mechanical force on the two plates which joint the plates permanently.

What is rivet? What are main types of rivets?

The process by which two plates are joints together by use of rivet is called riveting. In this process mechanical force is applied to make the joint strong and leak proof. In this operation two holes are created in both plates and the rivet is inserted between these holes. At the other end a force is applied through a die which deform the tail plastically and form a required shapes which hold the rivet in the hole and apply a mechanical pressure force which joint the structure. This process is shown by figure.

Types of Rivets:

Rivets are used as permanent fastener in mechanical industries. It is less costly and effective way of joining a structure. According to the requirement, rivets are available in many shapes and sizes.

According to the design of rivets, these are classified as follow.

Solid rivets:

Solid rivets used in many structure members such as in ships, Bridge etc. but now days these rivets are almost replaced by welding and brazing. According to head design these are as follow:

Round Head Rivet:

Countersunk Head Rivet:

Oval Countersunk Head rivet:

Blind Rivets:

Blind rivets are also known as hollow rivets. These rivets are used widely in aircraft industries, shipping industries and in many electronics industries. The main advantage of these rivets that they have the fastest rate of installation among all fasteners. One more benefit is that this can be install from the single side. A blind rivet is used when it is impossible to seen rivet tail.

Riveted Joints:

There are two types of rivet joints.

1. Lap joint

When the plates to be joint, are bring together which overlap each other at face, and rivet inserted in overlap section as shown in figure, the joint is known as lap joint.

According to the number of rows of rivets and its arrangement, this joint is further classified as follow

Single riveted lap joint:

In this joint, the rivets are inserted in the single line, that's why it is called as single riveted lap joint.

Double riveted lap joint:

In this joint, the rivets are inserted in the double line, that's why it is called as double riveted lap joint.

Chain riveted lap joint:

Zig-Zag riveted lap joint:

2. Butt joint:

In this type of rivet joint both plates are bring together without overlap each other and joint are made by use of one or two cover plate as shown in figure.