JOINING AND FIXING TECHNIQUES

PRESENTED BY:Himanshu Agrawal

Introduction

Refers to joining of two components together.

Joining can be either permanent or temporary.

Generally these techniques are used to join metal sheets and other components.

Different techniques:

Two different techniques are privileged. ► Mechanical Fixings. ► Non-mechanical fixings.

Mechanical Fixing

Temporary fixings. Can be removed easily. Can withhold moderate pressure and

vibrations. Fails at high vibratory motions. Most commonly used in daily households.

Mechanical fixings cont.

Different types of mechanical fixings are: ○ Bolt. ○ Screw. ○ Rivet. ○ Clip.

Non-mechanical fixings

More rigid as compared to mechanical fixings.

Cant be removed easily. Proper technique to be followed to get it

removed. Can be effected by environmental

conditions like moisture etc. Flaws while joining may lead to

permanent imperfection.

Non-mechanical fixing cont.

Mainly two methods are privileged: ○ Adhesive. ○ Welding.

Advantages and disadvantages:

Advantages of mechanical fixings: ◦ these can be removed easily. ◦ bolts and rivets can’t get affected by environmental agents until they remained in contact for longer time. ◦ any flaw can be removed easily.◘ Disadvantages of mechanical fixings: ◦ these can be affected by heavy shocks. ◦ these can be loosened by long duration

contact with vibrations.

Advantages and disadvantages cont.

Advantages of non-mechanical fixings: ◦ these are more rigid than mechanical fixing. ◦ these can withhold even high vibrations and

shocks.◘ Disadvantages of non-mechanical fixings: ◦ these can be effected adversely by different

external agents like moisture. ◦ required more perfection as if at time of

application any flaw appears it may lead to permanent imperfection.