How To Weld Cast Iron With A Mig Welder Perfectly
Cast iron is made of iron-carbon alloys, and the carbon content in this iron is more than 2%. One can easily fix this iron because of its low melting temperature. If you want to know how to weld cast iron with a MIG welder, you will need to know the melting temperature and the right procedure of welding cast iron.
Possessing sufficient knowledge about welding will help anyone to fix any crack or crevice in the iron. There are several welders like – MIG (metal inert gas), TIG (tungsten inert gas), Arc, and so on. Each of these welders has unique advantages. In this article, we will focus only on the cast iron with a MIG welder.
The Right Way to Weld Cast Iron
Before start fixing or repairing, it is a must to realize how difficult it is to weld a cast iron. If an individual does it in the wrong way, he may result in developing further cracks. Welding a cast iron is so hard that, most of the time, moderately experienced people have a 50% chance of being successful.
The most important way to weld a cast iron is to handle the iron carefully while welding it. To do this, it is better to know the proportion of the materials, which make the iron very hard and strong. It also indicates the temperature that the iron can stand with before cracking. You should to know What Kind Of Welding Rod To Use On Cast Iron before start.
How to Weld Cast Iron with a MIG Welder
There is a rule of thumb while welding cast iron – be slow and low. Try to apply lower currents and move slowly. At a time, work about an inch and wait for at least 45 seconds between two segments.
In this way, we can avoid overheating as well as creating residual stresses, which can cause a fracture in the cast iron.
While welding a cast iron, be careful with it because of its carbon content. The carbon is responsible for causing the entire structure to shrink and crack quickly if the temperature can pass a specific temperature.
Therefore, always stay alert and be attentive while welding a cast iron. You should regard the following as the main concern –