assignment 7
wild card weak
Obejctive
To learn a new fabrication technique which has not ben covere in the class and for that I have selected Arc welding
What is Arc welding
Arc welding is most commonly used to join two pieces of metal.The welder creates an electric arc that melts the base metals and filler metal (consumable) together so that they all fuse into one solid piece of metal.
It is a fusion welding which uses elctric arc to produce the heat required to melt the metal
Basic steps
AC arc welding
Transformer is used to step down the voltage. by decreasing the voltage, current is increasd and the heat generated is also increased.
e.g. 220V at 50A to 17-40 V at upto 600A.
Equipment used in the arc welding are shown in the image
experiment
This assignment required to learn the skill, so I went to the nearest welder and learned to do a simple joint. I was not able to make anything bigger because lockdown allows welders to operate fot only 3 hrs, so the welder had already to much work.
VIDEO